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90e7678c | 1 | /* Subroutines for insn-output.c for ATMEL AVR micro controllers |
12720317 | 2 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008 |
283334f0 | 3 | Free Software Foundation, Inc. |
90e7678c DC |
4 | Contributed by Denis Chertykov (denisc@overta.ru) |
5 | ||
7ec022b2 | 6 | This file is part of GCC. |
90e7678c | 7 | |
7ec022b2 | 8 | GCC is free software; you can redistribute it and/or modify |
90e7678c | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
90e7678c DC |
11 | any later version. |
12 | ||
7ec022b2 | 13 | GCC is distributed in the hope that it will be useful, |
90e7678c DC |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
90e7678c DC |
21 | |
22 | #include "config.h" | |
b8fa3ed6 | 23 | #include "system.h" |
4977bab6 ZW |
24 | #include "coretypes.h" |
25 | #include "tm.h" | |
90e7678c DC |
26 | #include "rtl.h" |
27 | #include "regs.h" | |
28 | #include "hard-reg-set.h" | |
29 | #include "real.h" | |
30 | #include "insn-config.h" | |
31 | #include "conditions.h" | |
90e7678c DC |
32 | #include "insn-attr.h" |
33 | #include "flags.h" | |
34 | #include "reload.h" | |
35 | #include "tree.h" | |
3eaf7a3c | 36 | #include "output.h" |
90e7678c DC |
37 | #include "expr.h" |
38 | #include "toplev.h" | |
39 | #include "obstack.h" | |
40 | #include "function.h" | |
41 | #include "recog.h" | |
baac771a | 42 | #include "ggc.h" |
90e7678c | 43 | #include "tm_p.h" |
672a6f42 NB |
44 | #include "target.h" |
45 | #include "target-def.h" | |
4e63b362 | 46 | #include "df.h" |
90e7678c | 47 | |
3454eb73 DC |
48 | /* Maximal allowed offset for an address in the LD command */ |
49 | #define MAX_LD_OFFSET(MODE) (64 - (signed)GET_MODE_SIZE (MODE)) | |
90e7678c | 50 | |
269e3795 SB |
51 | static int avr_naked_function_p (tree); |
52 | static int interrupt_function_p (tree); | |
53 | static int signal_function_p (tree); | |
96ac4c9b | 54 | static int avr_OS_task_function_p (tree); |
9b678d96 | 55 | static int avr_OS_main_function_p (tree); |
269e3795 | 56 | static int avr_regs_to_save (HARD_REG_SET *); |
97822902 | 57 | static int get_sequence_length (rtx insns); |
269e3795 SB |
58 | static int sequent_regs_live (void); |
59 | static const char *ptrreg_to_str (int); | |
60 | static const char *cond_string (enum rtx_code); | |
61 | static int avr_num_arg_regs (enum machine_mode, tree); | |
4fc2b4ff | 62 | |
269e3795 SB |
63 | static RTX_CODE compare_condition (rtx insn); |
64 | static int compare_sign_p (rtx insn); | |
65 | static tree avr_handle_progmem_attribute (tree *, tree, tree, int, bool *); | |
66 | static tree avr_handle_fndecl_attribute (tree *, tree, tree, int, bool *); | |
44190aed | 67 | static tree avr_handle_fntype_attribute (tree *, tree, tree, int, bool *); |
91d231cb | 68 | const struct attribute_spec avr_attribute_table[]; |
269e3795 SB |
69 | static bool avr_assemble_integer (rtx, unsigned int, int); |
70 | static void avr_file_start (void); | |
71 | static void avr_file_end (void); | |
4fc2b4ff AH |
72 | static void avr_asm_function_end_prologue (FILE *); |
73 | static void avr_asm_function_begin_epilogue (FILE *); | |
269e3795 | 74 | static void avr_insert_attributes (tree, tree *); |
d6b5193b | 75 | static void avr_asm_init_sections (void); |
269e3795 SB |
76 | static unsigned int avr_section_type_flags (tree, const char *, int); |
77 | ||
78 | static void avr_reorg (void); | |
79 | static void avr_asm_out_ctor (rtx, int); | |
80 | static void avr_asm_out_dtor (rtx, int); | |
8f2bf9f1 | 81 | static int avr_operand_rtx_cost (rtx, enum machine_mode, enum rtx_code); |
269e3795 SB |
82 | static bool avr_rtx_costs (rtx, int, int, int *); |
83 | static int avr_address_cost (rtx); | |
586de218 | 84 | static bool avr_return_in_memory (const_tree, const_tree); |
4fc2b4ff | 85 | static struct machine_function * avr_init_machine_status (void); |
1bf29643 AH |
86 | static rtx avr_builtin_setjmp_frame_value (void); |
87 | ||
2c338472 | 88 | /* Allocate registers from r25 to r8 for parameters for function calls. */ |
90e7678c DC |
89 | #define FIRST_CUM_REG 26 |
90 | ||
f1c25d3b | 91 | /* Temporary register RTX (gen_rtx_REG (QImode, TMP_REGNO)) */ |
baac771a | 92 | static GTY(()) rtx tmp_reg_rtx; |
90e7678c | 93 | |
f1c25d3b | 94 | /* Zeroed register RTX (gen_rtx_REG (QImode, ZERO_REGNO)) */ |
baac771a | 95 | static GTY(()) rtx zero_reg_rtx; |
6bec29c9 | 96 | |
90e7678c | 97 | /* AVR register names {"r0", "r1", ..., "r31"} */ |
27c38fbe | 98 | static const char *const avr_regnames[] = REGISTER_NAMES; |
90e7678c DC |
99 | |
100 | /* This holds the last insn address. */ | |
101 | static int last_insn_address = 0; | |
102 | ||
92c392e6 | 103 | /* Preprocessor macros to define depending on MCU type. */ |
92c392e6 NB |
104 | const char *avr_extra_arch_macro; |
105 | ||
19298da4 AS |
106 | /* Current architecture. */ |
107 | const struct base_arch_s *avr_current_arch; | |
108 | ||
d6b5193b RS |
109 | section *progmem_section; |
110 | ||
92c392e6 | 111 | static const struct base_arch_s avr_arch_types[] = { |
19298da4 AS |
112 | { 1, 0, 0, 0, 0, 0, 0, 0, NULL }, /* unknown device specified */ |
113 | { 1, 0, 0, 0, 0, 0, 0, 0, "__AVR_ARCH__=1" }, | |
114 | { 0, 0, 0, 0, 0, 0, 0, 0, "__AVR_ARCH__=2" }, | |
115 | { 0, 0, 0, 1, 0, 0, 0, 0, "__AVR_ARCH__=25" }, | |
116 | { 0, 0, 1, 0, 0, 0, 0, 0, "__AVR_ARCH__=3" }, | |
117 | { 0, 0, 1, 0, 1, 0, 0, 0, "__AVR_ARCH__=31" }, | |
118 | { 0, 0, 1, 1, 0, 0, 0, 0, "__AVR_ARCH__=35" }, | |
119 | { 0, 1, 0, 1, 0, 0, 0, 0, "__AVR_ARCH__=4" }, | |
120 | { 0, 1, 1, 1, 0, 0, 0, 0, "__AVR_ARCH__=5" }, | |
693092fb BH |
121 | { 0, 1, 1, 1, 1, 1, 0, 0, "__AVR_ARCH__=51" }, |
122 | { 0, 1, 1, 1, 1, 1, 1, 0, "__AVR_ARCH__=6" } | |
14683174 AS |
123 | }; |
124 | ||
125 | /* These names are used as the index into the avr_arch_types[] table | |
126 | above. */ | |
127 | ||
128 | enum avr_arch | |
129 | { | |
130 | ARCH_UNKNOWN, | |
131 | ARCH_AVR1, | |
132 | ARCH_AVR2, | |
133 | ARCH_AVR25, | |
134 | ARCH_AVR3, | |
19298da4 | 135 | ARCH_AVR31, |
9628d76b | 136 | ARCH_AVR35, |
14683174 | 137 | ARCH_AVR4, |
19298da4 | 138 | ARCH_AVR5, |
693092fb BH |
139 | ARCH_AVR51, |
140 | ARCH_AVR6 | |
6bec29c9 DC |
141 | }; |
142 | ||
143 | struct mcu_type_s { | |
8b60264b | 144 | const char *const name; |
92c392e6 NB |
145 | int arch; /* index in avr_arch_types[] */ |
146 | /* Must lie outside user's namespace. NULL == no macro. */ | |
147 | const char *const macro; | |
6bec29c9 DC |
148 | }; |
149 | ||
150 | /* List of all known AVR MCU types - if updated, it has to be kept | |
151 | in sync in several places (FIXME: is there a better way?): | |
152 | - here | |
153 | - avr.h (CPP_SPEC, LINK_SPEC, CRT_BINUTILS_SPECS) | |
154 | - t-avr (MULTILIB_MATCHES) | |
155 | - gas/config/tc-avr.c | |
156 | - avr-libc */ | |
157 | ||
158 | static const struct mcu_type_s avr_mcu_types[] = { | |
159 | /* Classic, <= 8K. */ | |
14683174 AS |
160 | { "avr2", ARCH_AVR2, NULL }, |
161 | { "at90s2313", ARCH_AVR2, "__AVR_AT90S2313__" }, | |
162 | { "at90s2323", ARCH_AVR2, "__AVR_AT90S2323__" }, | |
163 | { "at90s2333", ARCH_AVR2, "__AVR_AT90S2333__" }, | |
164 | { "at90s2343", ARCH_AVR2, "__AVR_AT90S2343__" }, | |
165 | { "attiny22", ARCH_AVR2, "__AVR_ATtiny22__" }, | |
166 | { "attiny26", ARCH_AVR2, "__AVR_ATtiny26__" }, | |
167 | { "at90s4414", ARCH_AVR2, "__AVR_AT90S4414__" }, | |
168 | { "at90s4433", ARCH_AVR2, "__AVR_AT90S4433__" }, | |
169 | { "at90s4434", ARCH_AVR2, "__AVR_AT90S4434__" }, | |
170 | { "at90s8515", ARCH_AVR2, "__AVR_AT90S8515__" }, | |
171 | { "at90c8534", ARCH_AVR2, "__AVR_AT90C8534__" }, | |
172 | { "at90s8535", ARCH_AVR2, "__AVR_AT90S8535__" }, | |
6b262ee8 | 173 | /* Classic + MOVW, <= 8K. */ |
14683174 AS |
174 | { "avr25", ARCH_AVR25, NULL }, |
175 | { "attiny13", ARCH_AVR25, "__AVR_ATtiny13__" }, | |
176 | { "attiny2313", ARCH_AVR25, "__AVR_ATtiny2313__" }, | |
177 | { "attiny24", ARCH_AVR25, "__AVR_ATtiny24__" }, | |
178 | { "attiny44", ARCH_AVR25, "__AVR_ATtiny44__" }, | |
179 | { "attiny84", ARCH_AVR25, "__AVR_ATtiny84__" }, | |
180 | { "attiny25", ARCH_AVR25, "__AVR_ATtiny25__" }, | |
181 | { "attiny45", ARCH_AVR25, "__AVR_ATtiny45__" }, | |
182 | { "attiny85", ARCH_AVR25, "__AVR_ATtiny85__" }, | |
183 | { "attiny261", ARCH_AVR25, "__AVR_ATtiny261__" }, | |
184 | { "attiny461", ARCH_AVR25, "__AVR_ATtiny461__" }, | |
185 | { "attiny861", ARCH_AVR25, "__AVR_ATtiny861__" }, | |
859bc2ff | 186 | { "attiny43u", ARCH_AVR25, "__AVR_ATtiny43U__" }, |
59902acf | 187 | { "attiny48", ARCH_AVR25, "__AVR_ATtiny48__" }, |
e2a021c9 | 188 | { "attiny88", ARCH_AVR25, "__AVR_ATtiny88__" }, |
14683174 | 189 | { "at86rf401", ARCH_AVR25, "__AVR_AT86RF401__" }, |
19298da4 | 190 | /* Classic, > 8K, <= 64K. */ |
14683174 | 191 | { "avr3", ARCH_AVR3, NULL }, |
14683174 AS |
192 | { "at43usb320", ARCH_AVR3, "__AVR_AT43USB320__" }, |
193 | { "at43usb355", ARCH_AVR3, "__AVR_AT43USB355__" }, | |
194 | { "at76c711", ARCH_AVR3, "__AVR_AT76C711__" }, | |
19298da4 AS |
195 | /* Classic, == 128K. */ |
196 | { "avr31", ARCH_AVR31, NULL }, | |
5d9b8bb4 | 197 | { "atmega103", ARCH_AVR31, "__AVR_ATmega103__" }, |
9628d76b AS |
198 | /* Classic + MOVW + JMP/CALL. */ |
199 | { "avr35", ARCH_AVR35, NULL }, | |
200 | { "at90usb82", ARCH_AVR35, "__AVR_AT90USB82__" }, | |
201 | { "at90usb162", ARCH_AVR35, "__AVR_AT90USB162__" }, | |
6bec29c9 | 202 | /* Enhanced, <= 8K. */ |
14683174 AS |
203 | { "avr4", ARCH_AVR4, NULL }, |
204 | { "atmega8", ARCH_AVR4, "__AVR_ATmega8__" }, | |
205 | { "atmega48", ARCH_AVR4, "__AVR_ATmega48__" }, | |
fabf8971 | 206 | { "atmega48p", ARCH_AVR4, "__AVR_ATmega48P__" }, |
14683174 | 207 | { "atmega88", ARCH_AVR4, "__AVR_ATmega88__" }, |
fabf8971 | 208 | { "atmega88p", ARCH_AVR4, "__AVR_ATmega88P__" }, |
14683174 AS |
209 | { "atmega8515", ARCH_AVR4, "__AVR_ATmega8515__" }, |
210 | { "atmega8535", ARCH_AVR4, "__AVR_ATmega8535__" }, | |
dd3b6c09 | 211 | { "atmega8hva", ARCH_AVR4, "__AVR_ATmega8HVA__" }, |
14683174 AS |
212 | { "at90pwm1", ARCH_AVR4, "__AVR_AT90PWM1__" }, |
213 | { "at90pwm2", ARCH_AVR4, "__AVR_AT90PWM2__" }, | |
f978d2c7 | 214 | { "at90pwm2b", ARCH_AVR4, "__AVR_AT90PWM2B__" }, |
14683174 | 215 | { "at90pwm3", ARCH_AVR4, "__AVR_AT90PWM3__" }, |
f978d2c7 | 216 | { "at90pwm3b", ARCH_AVR4, "__AVR_AT90PWM3B__" }, |
19298da4 | 217 | /* Enhanced, > 8K, <= 64K. */ |
14683174 AS |
218 | { "avr5", ARCH_AVR5, NULL }, |
219 | { "atmega16", ARCH_AVR5, "__AVR_ATmega16__" }, | |
220 | { "atmega161", ARCH_AVR5, "__AVR_ATmega161__" }, | |
221 | { "atmega162", ARCH_AVR5, "__AVR_ATmega162__" }, | |
222 | { "atmega163", ARCH_AVR5, "__AVR_ATmega163__" }, | |
223 | { "atmega164p", ARCH_AVR5, "__AVR_ATmega164P__" }, | |
224 | { "atmega165", ARCH_AVR5, "__AVR_ATmega165__" }, | |
225 | { "atmega165p", ARCH_AVR5, "__AVR_ATmega165P__" }, | |
226 | { "atmega168", ARCH_AVR5, "__AVR_ATmega168__" }, | |
fabf8971 | 227 | { "atmega168p", ARCH_AVR5, "__AVR_ATmega168P__" }, |
14683174 AS |
228 | { "atmega169", ARCH_AVR5, "__AVR_ATmega169__" }, |
229 | { "atmega169p", ARCH_AVR5, "__AVR_ATmega169P__" }, | |
230 | { "atmega32", ARCH_AVR5, "__AVR_ATmega32__" }, | |
231 | { "atmega323", ARCH_AVR5, "__AVR_ATmega323__" }, | |
232 | { "atmega324p", ARCH_AVR5, "__AVR_ATmega324P__" }, | |
233 | { "atmega325", ARCH_AVR5, "__AVR_ATmega325__" }, | |
234 | { "atmega325p", ARCH_AVR5, "__AVR_ATmega325P__" }, | |
235 | { "atmega3250", ARCH_AVR5, "__AVR_ATmega3250__" }, | |
236 | { "atmega3250p", ARCH_AVR5, "__AVR_ATmega3250P__" }, | |
fabf8971 | 237 | { "atmega328p", ARCH_AVR5, "__AVR_ATmega328P__" }, |
14683174 AS |
238 | { "atmega329", ARCH_AVR5, "__AVR_ATmega329__" }, |
239 | { "atmega329p", ARCH_AVR5, "__AVR_ATmega329P__" }, | |
240 | { "atmega3290", ARCH_AVR5, "__AVR_ATmega3290__" }, | |
241 | { "atmega3290p", ARCH_AVR5, "__AVR_ATmega3290P__" }, | |
24e472b8 | 242 | { "atmega32hvb", ARCH_AVR5, "__AVR_ATmega32HVB__" }, |
14683174 AS |
243 | { "atmega406", ARCH_AVR5, "__AVR_ATmega406__" }, |
244 | { "atmega64", ARCH_AVR5, "__AVR_ATmega64__" }, | |
245 | { "atmega640", ARCH_AVR5, "__AVR_ATmega640__" }, | |
246 | { "atmega644", ARCH_AVR5, "__AVR_ATmega644__" }, | |
247 | { "atmega644p", ARCH_AVR5, "__AVR_ATmega644P__" }, | |
248 | { "atmega645", ARCH_AVR5, "__AVR_ATmega645__" }, | |
249 | { "atmega6450", ARCH_AVR5, "__AVR_ATmega6450__" }, | |
250 | { "atmega649", ARCH_AVR5, "__AVR_ATmega649__" }, | |
251 | { "atmega6490", ARCH_AVR5, "__AVR_ATmega6490__" }, | |
dd3b6c09 | 252 | { "atmega16hva", ARCH_AVR5, "__AVR_ATmega16HVA__" }, |
14683174 AS |
253 | { "at90can32", ARCH_AVR5, "__AVR_AT90CAN32__" }, |
254 | { "at90can64", ARCH_AVR5, "__AVR_AT90CAN64__" }, | |
2bf374ab EW |
255 | { "at90pwm216", ARCH_AVR5, "__AVR_AT90PWM216__" }, |
256 | { "at90pwm316", ARCH_AVR5, "__AVR_AT90PWM316__" }, | |
14683174 AS |
257 | { "at90usb646", ARCH_AVR5, "__AVR_AT90USB646__" }, |
258 | { "at90usb647", ARCH_AVR5, "__AVR_AT90USB647__" }, | |
14683174 | 259 | { "at94k", ARCH_AVR5, "__AVR_AT94K__" }, |
19298da4 AS |
260 | /* Enhanced, == 128K. */ |
261 | { "avr51", ARCH_AVR51, NULL }, | |
262 | { "atmega128", ARCH_AVR51, "__AVR_ATmega128__" }, | |
263 | { "atmega1280", ARCH_AVR51, "__AVR_ATmega1280__" }, | |
264 | { "atmega1281", ARCH_AVR51, "__AVR_ATmega1281__" }, | |
265 | { "atmega1284p", ARCH_AVR51, "__AVR_ATmega1284P__" }, | |
266 | { "at90can128", ARCH_AVR51, "__AVR_AT90CAN128__" }, | |
267 | { "at90usb1286", ARCH_AVR51, "__AVR_AT90USB1286__" }, | |
268 | { "at90usb1287", ARCH_AVR51, "__AVR_AT90USB1287__" }, | |
693092fb BH |
269 | /* 3-Byte PC. */ |
270 | { "avr6", ARCH_AVR6, NULL }, | |
271 | { "atmega2560", ARCH_AVR6, "__AVR_ATmega2560__" }, | |
272 | { "atmega2561", ARCH_AVR6, "__AVR_ATmega2561__" }, | |
6bec29c9 | 273 | /* Assembler only. */ |
14683174 AS |
274 | { "avr1", ARCH_AVR1, NULL }, |
275 | { "at90s1200", ARCH_AVR1, "__AVR_AT90S1200__" }, | |
276 | { "attiny11", ARCH_AVR1, "__AVR_ATtiny11__" }, | |
277 | { "attiny12", ARCH_AVR1, "__AVR_ATtiny12__" }, | |
278 | { "attiny15", ARCH_AVR1, "__AVR_ATtiny15__" }, | |
279 | { "attiny28", ARCH_AVR1, "__AVR_ATtiny28__" }, | |
280 | { NULL, ARCH_UNKNOWN, NULL } | |
6bec29c9 | 281 | }; |
90e7678c | 282 | |
1268b05f | 283 | int avr_case_values_threshold = 30000; |
672a6f42 NB |
284 | \f |
285 | /* Initialize the GCC target structure. */ | |
301d03af RS |
286 | #undef TARGET_ASM_ALIGNED_HI_OP |
287 | #define TARGET_ASM_ALIGNED_HI_OP "\t.word\t" | |
10252a62 BH |
288 | #undef TARGET_ASM_ALIGNED_SI_OP |
289 | #define TARGET_ASM_ALIGNED_SI_OP "\t.long\t" | |
290 | #undef TARGET_ASM_UNALIGNED_HI_OP | |
291 | #define TARGET_ASM_UNALIGNED_HI_OP "\t.word\t" | |
292 | #undef TARGET_ASM_UNALIGNED_SI_OP | |
293 | #define TARGET_ASM_UNALIGNED_SI_OP "\t.long\t" | |
301d03af RS |
294 | #undef TARGET_ASM_INTEGER |
295 | #define TARGET_ASM_INTEGER avr_assemble_integer | |
1bc7c5b6 ZW |
296 | #undef TARGET_ASM_FILE_START |
297 | #define TARGET_ASM_FILE_START avr_file_start | |
298 | #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE | |
299 | #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true | |
a5fe455b ZW |
300 | #undef TARGET_ASM_FILE_END |
301 | #define TARGET_ASM_FILE_END avr_file_end | |
301d03af | 302 | |
4fc2b4ff AH |
303 | #undef TARGET_ASM_FUNCTION_END_PROLOGUE |
304 | #define TARGET_ASM_FUNCTION_END_PROLOGUE avr_asm_function_end_prologue | |
305 | #undef TARGET_ASM_FUNCTION_BEGIN_EPILOGUE | |
306 | #define TARGET_ASM_FUNCTION_BEGIN_EPILOGUE avr_asm_function_begin_epilogue | |
91d231cb JM |
307 | #undef TARGET_ATTRIBUTE_TABLE |
308 | #define TARGET_ATTRIBUTE_TABLE avr_attribute_table | |
ab5c8549 JJ |
309 | #undef TARGET_ASM_FUNCTION_RODATA_SECTION |
310 | #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section | |
74b66b3c RH |
311 | #undef TARGET_INSERT_ATTRIBUTES |
312 | #define TARGET_INSERT_ATTRIBUTES avr_insert_attributes | |
c16e5a35 MM |
313 | #undef TARGET_SECTION_TYPE_FLAGS |
314 | #define TARGET_SECTION_TYPE_FLAGS avr_section_type_flags | |
3c50106f RH |
315 | #undef TARGET_RTX_COSTS |
316 | #define TARGET_RTX_COSTS avr_rtx_costs | |
dcefdf67 RH |
317 | #undef TARGET_ADDRESS_COST |
318 | #define TARGET_ADDRESS_COST avr_address_cost | |
18dbd950 RS |
319 | #undef TARGET_MACHINE_DEPENDENT_REORG |
320 | #define TARGET_MACHINE_DEPENDENT_REORG avr_reorg | |
672a6f42 | 321 | |
b069302c KH |
322 | #undef TARGET_RETURN_IN_MEMORY |
323 | #define TARGET_RETURN_IN_MEMORY avr_return_in_memory | |
324 | ||
325 | #undef TARGET_STRICT_ARGUMENT_NAMING | |
326 | #define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_true | |
327 | ||
1bf29643 AH |
328 | #undef TARGET_BUILTIN_SETJMP_FRAME_VALUE |
329 | #define TARGET_BUILTIN_SETJMP_FRAME_VALUE avr_builtin_setjmp_frame_value | |
330 | ||
f6897b10 | 331 | struct gcc_target targetm = TARGET_INITIALIZER; |
672a6f42 | 332 | \f |
90e7678c | 333 | void |
269e3795 | 334 | avr_override_options (void) |
90e7678c | 335 | { |
6bec29c9 DC |
336 | const struct mcu_type_s *t; |
337 | ||
6c7ac15d AS |
338 | flag_delete_null_pointer_checks = 0; |
339 | ||
6bec29c9 DC |
340 | for (t = avr_mcu_types; t->name; t++) |
341 | if (strcmp (t->name, avr_mcu_name) == 0) | |
90e7678c | 342 | break; |
6bec29c9 DC |
343 | |
344 | if (!t->name) | |
90e7678c | 345 | { |
c85ce869 | 346 | fprintf (stderr, "unknown MCU '%s' specified\nKnown MCU names:\n", |
6bec29c9 DC |
347 | avr_mcu_name); |
348 | for (t = avr_mcu_types; t->name; t++) | |
349 | fprintf (stderr," %s\n", t->name); | |
6bec29c9 DC |
350 | } |
351 | ||
19298da4 | 352 | avr_current_arch = &avr_arch_types[t->arch]; |
92c392e6 | 353 | avr_extra_arch_macro = t->macro; |
1268b05f MM |
354 | |
355 | if (optimize && !TARGET_NO_TABLEJUMP) | |
5dc77808 AS |
356 | avr_case_values_threshold = |
357 | (!AVR_HAVE_JMP_CALL || TARGET_CALL_PROLOGUES) ? 8 : 17; | |
90e7678c | 358 | |
baac771a KH |
359 | tmp_reg_rtx = gen_rtx_REG (QImode, TMP_REGNO); |
360 | zero_reg_rtx = gen_rtx_REG (QImode, ZERO_REGNO); | |
4fc2b4ff AH |
361 | |
362 | init_machine_status = avr_init_machine_status; | |
90e7678c DC |
363 | } |
364 | ||
2c338472 | 365 | /* return register class from register number. */ |
90e7678c | 366 | |
8b60264b | 367 | static const int reg_class_tab[]={ |
90e7678c DC |
368 | GENERAL_REGS,GENERAL_REGS,GENERAL_REGS,GENERAL_REGS,GENERAL_REGS, |
369 | GENERAL_REGS,GENERAL_REGS,GENERAL_REGS,GENERAL_REGS,GENERAL_REGS, | |
370 | GENERAL_REGS,GENERAL_REGS,GENERAL_REGS,GENERAL_REGS,GENERAL_REGS, | |
371 | GENERAL_REGS, /* r0 - r15 */ | |
372 | LD_REGS,LD_REGS,LD_REGS,LD_REGS,LD_REGS,LD_REGS,LD_REGS, | |
373 | LD_REGS, /* r16 - 23 */ | |
374 | ADDW_REGS,ADDW_REGS, /* r24,r25 */ | |
375 | POINTER_X_REGS,POINTER_X_REGS, /* r26,27 */ | |
376 | POINTER_Y_REGS,POINTER_Y_REGS, /* r28,r29 */ | |
377 | POINTER_Z_REGS,POINTER_Z_REGS, /* r30,r31 */ | |
378 | STACK_REG,STACK_REG /* SPL,SPH */ | |
379 | }; | |
380 | ||
4fc2b4ff AH |
381 | /* Function to set up the backend function structure. */ |
382 | ||
383 | static struct machine_function * | |
384 | avr_init_machine_status (void) | |
385 | { | |
386 | return ((struct machine_function *) | |
387 | ggc_alloc_cleared (sizeof (struct machine_function))); | |
388 | } | |
389 | ||
2c338472 | 390 | /* Return register class for register R. */ |
90e7678c DC |
391 | |
392 | enum reg_class | |
269e3795 | 393 | avr_regno_reg_class (int r) |
90e7678c DC |
394 | { |
395 | if (r <= 33) | |
396 | return reg_class_tab[r]; | |
397 | return ALL_REGS; | |
398 | } | |
399 | ||
825dda42 | 400 | /* Return nonzero if FUNC is a naked function. */ |
90e7678c DC |
401 | |
402 | static int | |
269e3795 | 403 | avr_naked_function_p (tree func) |
90e7678c DC |
404 | { |
405 | tree a; | |
406 | ||
25b9575b | 407 | gcc_assert (TREE_CODE (func) == FUNCTION_DECL); |
90e7678c | 408 | |
44190aed | 409 | a = lookup_attribute ("naked", TYPE_ATTRIBUTES (TREE_TYPE (func))); |
90e7678c DC |
410 | return a != NULL_TREE; |
411 | } | |
412 | ||
413 | /* Return nonzero if FUNC is an interrupt function as specified | |
414 | by the "interrupt" attribute. */ | |
415 | ||
416 | static int | |
269e3795 | 417 | interrupt_function_p (tree func) |
90e7678c DC |
418 | { |
419 | tree a; | |
420 | ||
421 | if (TREE_CODE (func) != FUNCTION_DECL) | |
422 | return 0; | |
423 | ||
91d231cb | 424 | a = lookup_attribute ("interrupt", DECL_ATTRIBUTES (func)); |
90e7678c DC |
425 | return a != NULL_TREE; |
426 | } | |
427 | ||
3454eb73 | 428 | /* Return nonzero if FUNC is a signal function as specified |
90e7678c DC |
429 | by the "signal" attribute. */ |
430 | ||
431 | static int | |
269e3795 | 432 | signal_function_p (tree func) |
90e7678c DC |
433 | { |
434 | tree a; | |
435 | ||
436 | if (TREE_CODE (func) != FUNCTION_DECL) | |
437 | return 0; | |
438 | ||
91d231cb | 439 | a = lookup_attribute ("signal", DECL_ATTRIBUTES (func)); |
90e7678c DC |
440 | return a != NULL_TREE; |
441 | } | |
442 | ||
96ac4c9b AS |
443 | /* Return nonzero if FUNC is a OS_task function. */ |
444 | ||
445 | static int | |
446 | avr_OS_task_function_p (tree func) | |
447 | { | |
448 | tree a; | |
449 | ||
450 | gcc_assert (TREE_CODE (func) == FUNCTION_DECL); | |
451 | ||
452 | a = lookup_attribute ("OS_task", TYPE_ATTRIBUTES (TREE_TYPE (func))); | |
453 | return a != NULL_TREE; | |
454 | } | |
455 | ||
9b678d96 AS |
456 | /* Return nonzero if FUNC is a OS_main function. */ |
457 | ||
458 | static int | |
459 | avr_OS_main_function_p (tree func) | |
460 | { | |
461 | tree a; | |
462 | ||
463 | gcc_assert (TREE_CODE (func) == FUNCTION_DECL); | |
464 | ||
465 | a = lookup_attribute ("OS_main", TYPE_ATTRIBUTES (TREE_TYPE (func))); | |
466 | return a != NULL_TREE; | |
467 | } | |
468 | ||
93febe68 MM |
469 | /* Return the number of hard registers to push/pop in the prologue/epilogue |
470 | of the current function, and optionally store these registers in SET. */ | |
471 | ||
472 | static int | |
269e3795 | 473 | avr_regs_to_save (HARD_REG_SET *set) |
93febe68 MM |
474 | { |
475 | int reg, count; | |
476 | int int_or_sig_p = (interrupt_function_p (current_function_decl) | |
477 | || signal_function_p (current_function_decl)); | |
4c75f709 AS |
478 | |
479 | if (!reload_completed) | |
480 | cfun->machine->is_leaf = leaf_function_p (); | |
93febe68 MM |
481 | |
482 | if (set) | |
483 | CLEAR_HARD_REG_SET (*set); | |
484 | count = 0; | |
e52b6b63 | 485 | |
96ac4c9b | 486 | /* No need to save any registers if the function never returns or |
9b678d96 | 487 | is have "OS_task" or "OS_main" attribute. */ |
96ac4c9b | 488 | if (TREE_THIS_VOLATILE (current_function_decl) |
9b678d96 AS |
489 | || cfun->machine->is_OS_task |
490 | || cfun->machine->is_OS_main) | |
e52b6b63 MM |
491 | return 0; |
492 | ||
93febe68 MM |
493 | for (reg = 0; reg < 32; reg++) |
494 | { | |
495 | /* Do not push/pop __tmp_reg__, __zero_reg__, as well as | |
496 | any global register variables. */ | |
497 | if (fixed_regs[reg]) | |
498 | continue; | |
499 | ||
4c75f709 | 500 | if ((int_or_sig_p && !cfun->machine->is_leaf && call_used_regs[reg]) |
6fb5fa3c | 501 | || (df_regs_ever_live_p (reg) |
93febe68 MM |
502 | && (int_or_sig_p || !call_used_regs[reg]) |
503 | && !(frame_pointer_needed | |
504 | && (reg == REG_Y || reg == (REG_Y+1))))) | |
505 | { | |
506 | if (set) | |
507 | SET_HARD_REG_BIT (*set, reg); | |
508 | count++; | |
509 | } | |
510 | } | |
511 | return count; | |
512 | } | |
513 | ||
2c338472 | 514 | /* Compute offset between arg_pointer and frame_pointer. */ |
90e7678c DC |
515 | |
516 | int | |
269e3795 | 517 | initial_elimination_offset (int from, int to) |
90e7678c | 518 | { |
3454eb73 DC |
519 | if (from == FRAME_POINTER_REGNUM && to == STACK_POINTER_REGNUM) |
520 | return 0; | |
521 | else | |
522 | { | |
93febe68 | 523 | int offset = frame_pointer_needed ? 2 : 0; |
693092fb | 524 | int avr_pc_size = AVR_HAVE_EIJMP_EICALL ? 3 : 2; |
3454eb73 | 525 | |
93febe68 | 526 | offset += avr_regs_to_save (NULL); |
693092fb | 527 | return get_frame_size () + (avr_pc_size) + 1 + offset; |
90e7678c | 528 | } |
90e7678c DC |
529 | } |
530 | ||
1bf29643 AH |
531 | /* Actual start of frame is virtual_stack_vars_rtx this is offset from |
532 | frame pointer by +STARTING_FRAME_OFFSET. | |
533 | Using saved frame = virtual_stack_vars_rtx - STARTING_FRAME_OFFSET | |
534 | avoids creating add/sub of offset in nonlocal goto and setjmp. */ | |
535 | ||
536 | rtx avr_builtin_setjmp_frame_value (void) | |
537 | { | |
538 | return gen_rtx_MINUS (Pmode, virtual_stack_vars_rtx, | |
539 | gen_int_mode (STARTING_FRAME_OFFSET, Pmode)); | |
540 | } | |
541 | ||
126dbce0 MM |
542 | /* Return 1 if the function epilogue is just a single "ret". */ |
543 | ||
544 | int | |
269e3795 | 545 | avr_simple_epilogue (void) |
126dbce0 MM |
546 | { |
547 | return (! frame_pointer_needed | |
548 | && get_frame_size () == 0 | |
549 | && avr_regs_to_save (NULL) == 0 | |
550 | && ! interrupt_function_p (current_function_decl) | |
551 | && ! signal_function_p (current_function_decl) | |
552 | && ! avr_naked_function_p (current_function_decl) | |
126dbce0 MM |
553 | && ! TREE_THIS_VOLATILE (current_function_decl)); |
554 | } | |
555 | ||
2c338472 | 556 | /* This function checks sequence of live registers. */ |
90e7678c DC |
557 | |
558 | static int | |
269e3795 | 559 | sequent_regs_live (void) |
90e7678c DC |
560 | { |
561 | int reg; | |
562 | int live_seq=0; | |
563 | int cur_seq=0; | |
564 | ||
565 | for (reg = 0; reg < 18; ++reg) | |
566 | { | |
567 | if (!call_used_regs[reg]) | |
568 | { | |
6fb5fa3c | 569 | if (df_regs_ever_live_p (reg)) |
90e7678c DC |
570 | { |
571 | ++live_seq; | |
572 | ++cur_seq; | |
573 | } | |
574 | else | |
575 | cur_seq = 0; | |
576 | } | |
577 | } | |
578 | ||
579 | if (!frame_pointer_needed) | |
580 | { | |
6fb5fa3c | 581 | if (df_regs_ever_live_p (REG_Y)) |
90e7678c DC |
582 | { |
583 | ++live_seq; | |
584 | ++cur_seq; | |
585 | } | |
586 | else | |
587 | cur_seq = 0; | |
588 | ||
6fb5fa3c | 589 | if (df_regs_ever_live_p (REG_Y+1)) |
90e7678c DC |
590 | { |
591 | ++live_seq; | |
592 | ++cur_seq; | |
593 | } | |
594 | else | |
595 | cur_seq = 0; | |
596 | } | |
597 | else | |
598 | { | |
599 | cur_seq += 2; | |
600 | live_seq += 2; | |
601 | } | |
602 | return (cur_seq == live_seq) ? live_seq : 0; | |
603 | } | |
604 | ||
97822902 AS |
605 | /* Obtain the length sequence of insns. */ |
606 | ||
607 | int | |
608 | get_sequence_length (rtx insns) | |
609 | { | |
610 | rtx insn; | |
611 | int length; | |
612 | ||
613 | for (insn = insns, length = 0; insn; insn = NEXT_INSN (insn)) | |
614 | length += get_attr_length (insn); | |
615 | ||
616 | return length; | |
617 | } | |
618 | ||
4fc2b4ff | 619 | /* Output function prologue. */ |
90e7678c | 620 | |
4fc2b4ff AH |
621 | void |
622 | expand_prologue (void) | |
78cf8279 | 623 | { |
4fc2b4ff | 624 | int live_seq; |
d6f77715 | 625 | HARD_REG_SET set; |
4fc2b4ff AH |
626 | int minimize; |
627 | HOST_WIDE_INT size = get_frame_size(); | |
628 | /* Define templates for push instructions. */ | |
629 | rtx pushbyte = gen_rtx_MEM (QImode, | |
630 | gen_rtx_POST_DEC (HImode, stack_pointer_rtx)); | |
631 | rtx pushword = gen_rtx_MEM (HImode, | |
632 | gen_rtx_POST_DEC (HImode, stack_pointer_rtx)); | |
633 | rtx insn; | |
78cf8279 | 634 | |
4fc2b4ff AH |
635 | last_insn_address = 0; |
636 | ||
637 | /* Init cfun->machine. */ | |
4fc2b4ff AH |
638 | cfun->machine->is_naked = avr_naked_function_p (current_function_decl); |
639 | cfun->machine->is_interrupt = interrupt_function_p (current_function_decl); | |
640 | cfun->machine->is_signal = signal_function_p (current_function_decl); | |
96ac4c9b | 641 | cfun->machine->is_OS_task = avr_OS_task_function_p (current_function_decl); |
9b678d96 | 642 | cfun->machine->is_OS_main = avr_OS_main_function_p (current_function_decl); |
4fc2b4ff AH |
643 | |
644 | /* Prologue: naked. */ | |
645 | if (cfun->machine->is_naked) | |
78cf8279 | 646 | { |
4fc2b4ff | 647 | return; |
78cf8279 | 648 | } |
78cf8279 | 649 | |
d6f77715 | 650 | avr_regs_to_save (&set); |
4fc2b4ff AH |
651 | live_seq = sequent_regs_live (); |
652 | minimize = (TARGET_CALL_PROLOGUES | |
0d40cc60 AS |
653 | && !cfun->machine->is_interrupt |
654 | && !cfun->machine->is_signal | |
655 | && !cfun->machine->is_OS_task | |
9b678d96 | 656 | && !cfun->machine->is_OS_main |
4fc2b4ff | 657 | && live_seq); |
78cf8279 | 658 | |
4fc2b4ff | 659 | if (cfun->machine->is_interrupt || cfun->machine->is_signal) |
78cf8279 | 660 | { |
4fc2b4ff AH |
661 | if (cfun->machine->is_interrupt) |
662 | { | |
663 | /* Enable interrupts. */ | |
664 | insn = emit_insn (gen_enable_interrupt ()); | |
665 | RTX_FRAME_RELATED_P (insn) = 1; | |
666 | } | |
667 | ||
668 | /* Push zero reg. */ | |
669 | insn = emit_move_insn (pushbyte, zero_reg_rtx); | |
670 | RTX_FRAME_RELATED_P (insn) = 1; | |
671 | ||
672 | /* Push tmp reg. */ | |
673 | insn = emit_move_insn (pushbyte, tmp_reg_rtx); | |
674 | RTX_FRAME_RELATED_P (insn) = 1; | |
675 | ||
676 | /* Push SREG. */ | |
677 | insn = emit_move_insn (tmp_reg_rtx, | |
678 | gen_rtx_MEM (QImode, GEN_INT (SREG_ADDR))); | |
679 | RTX_FRAME_RELATED_P (insn) = 1; | |
680 | insn = emit_move_insn (pushbyte, tmp_reg_rtx); | |
681 | RTX_FRAME_RELATED_P (insn) = 1; | |
d6f77715 AS |
682 | |
683 | /* Push RAMPZ. */ | |
684 | if(AVR_HAVE_RAMPZ | |
685 | && (TEST_HARD_REG_BIT (set, REG_Z) && TEST_HARD_REG_BIT (set, REG_Z + 1))) | |
686 | { | |
687 | insn = emit_move_insn (tmp_reg_rtx, | |
688 | gen_rtx_MEM (QImode, GEN_INT (RAMPZ_ADDR))); | |
689 | RTX_FRAME_RELATED_P (insn) = 1; | |
690 | insn = emit_move_insn (pushbyte, tmp_reg_rtx); | |
691 | RTX_FRAME_RELATED_P (insn) = 1; | |
692 | } | |
693 | ||
4fc2b4ff AH |
694 | /* Clear zero reg. */ |
695 | insn = emit_move_insn (zero_reg_rtx, const0_rtx); | |
696 | RTX_FRAME_RELATED_P (insn) = 1; | |
78cf8279 | 697 | |
4fc2b4ff | 698 | /* Prevent any attempt to delete the setting of ZERO_REG! */ |
c41c1387 | 699 | emit_use (zero_reg_rtx); |
78cf8279 | 700 | } |
4d492420 TG |
701 | if (minimize && (frame_pointer_needed |
702 | || (AVR_2_BYTE_PC && live_seq > 6) | |
703 | || live_seq > 7)) | |
78cf8279 | 704 | { |
4e63b362 AS |
705 | insn = emit_move_insn (gen_rtx_REG (HImode, REG_X), |
706 | gen_int_mode (size, HImode)); | |
707 | RTX_FRAME_RELATED_P (insn) = 1; | |
708 | ||
4fc2b4ff | 709 | insn = |
4e63b362 AS |
710 | emit_insn (gen_call_prologue_saves (gen_int_mode (live_seq, HImode), |
711 | gen_int_mode (size + live_seq, HImode))); | |
4fc2b4ff | 712 | RTX_FRAME_RELATED_P (insn) = 1; |
78cf8279 | 713 | } |
4fc2b4ff | 714 | else |
78cf8279 | 715 | { |
4fc2b4ff AH |
716 | int reg; |
717 | for (reg = 0; reg < 32; ++reg) | |
718 | { | |
719 | if (TEST_HARD_REG_BIT (set, reg)) | |
720 | { | |
721 | /* Emit push of register to save. */ | |
722 | insn=emit_move_insn (pushbyte, gen_rtx_REG (QImode, reg)); | |
723 | RTX_FRAME_RELATED_P (insn) = 1; | |
724 | } | |
725 | } | |
726 | if (frame_pointer_needed) | |
727 | { | |
9b678d96 | 728 | if (!(cfun->machine->is_OS_task || cfun->machine->is_OS_main)) |
0d40cc60 AS |
729 | { |
730 | /* Push frame pointer. */ | |
731 | insn = emit_move_insn (pushword, frame_pointer_rtx); | |
732 | RTX_FRAME_RELATED_P (insn) = 1; | |
733 | } | |
734 | ||
4fc2b4ff AH |
735 | if (!size) |
736 | { | |
737 | insn = emit_move_insn (frame_pointer_rtx, stack_pointer_rtx); | |
738 | RTX_FRAME_RELATED_P (insn) = 1; | |
739 | } | |
740 | else | |
741 | { | |
742 | /* Creating a frame can be done by direct manipulation of the | |
743 | stack or via the frame pointer. These two methods are: | |
744 | fp=sp | |
745 | fp-=size | |
746 | sp=fp | |
747 | OR | |
748 | sp-=size | |
749 | fp=sp | |
750 | the optimum method depends on function type, stack and frame size. | |
751 | To avoid a complex logic, both methods are tested and shortest | |
752 | is selected. */ | |
753 | rtx myfp; | |
97822902 AS |
754 | rtx fp_plus_insns; |
755 | rtx sp_plus_insns = NULL_RTX; | |
756 | ||
4fc2b4ff AH |
757 | if (TARGET_TINY_STACK) |
758 | { | |
4fc2b4ff AH |
759 | /* The high byte (r29) doesn't change - prefer 'subi' (1 cycle) |
760 | over 'sbiw' (2 cycles, same size). */ | |
761 | myfp = gen_rtx_REG (QImode, REGNO (frame_pointer_rtx)); | |
762 | } | |
763 | else | |
764 | { | |
765 | /* Normal sized addition. */ | |
766 | myfp = frame_pointer_rtx; | |
767 | } | |
97822902 AS |
768 | |
769 | /* Method 1-Adjust frame pointer. */ | |
770 | start_sequence (); | |
771 | ||
772 | insn = emit_move_insn (frame_pointer_rtx, stack_pointer_rtx); | |
773 | RTX_FRAME_RELATED_P (insn) = 1; | |
774 | ||
775 | insn = | |
776 | emit_move_insn (myfp, | |
777 | gen_rtx_PLUS (GET_MODE(myfp), myfp, | |
778 | gen_int_mode (-size, | |
779 | GET_MODE(myfp)))); | |
780 | RTX_FRAME_RELATED_P (insn) = 1; | |
781 | ||
794cb45e AS |
782 | /* Copy to stack pointer. */ |
783 | if (TARGET_TINY_STACK) | |
784 | { | |
785 | insn = emit_move_insn (stack_pointer_rtx, frame_pointer_rtx); | |
786 | RTX_FRAME_RELATED_P (insn) = 1; | |
787 | } | |
788 | else if (TARGET_NO_INTERRUPTS | |
789 | || cfun->machine->is_signal | |
790 | || cfun->machine->is_OS_main) | |
791 | { | |
792 | insn = | |
793 | emit_insn (gen_movhi_sp_r_irq_off (stack_pointer_rtx, | |
794 | frame_pointer_rtx)); | |
795 | RTX_FRAME_RELATED_P (insn) = 1; | |
796 | } | |
797 | else if (cfun->machine->is_interrupt) | |
798 | { | |
799 | insn = emit_insn (gen_movhi_sp_r_irq_on (stack_pointer_rtx, | |
800 | frame_pointer_rtx)); | |
801 | RTX_FRAME_RELATED_P (insn) = 1; | |
802 | } | |
803 | else | |
804 | { | |
805 | insn = emit_move_insn (stack_pointer_rtx, frame_pointer_rtx); | |
806 | RTX_FRAME_RELATED_P (insn) = 1; | |
807 | } | |
97822902 AS |
808 | |
809 | fp_plus_insns = get_insns (); | |
810 | end_sequence (); | |
811 | ||
4fc2b4ff | 812 | /* Method 2-Adjust Stack pointer. */ |
4fc2b4ff AH |
813 | if (size <= 6) |
814 | { | |
97822902 AS |
815 | start_sequence (); |
816 | ||
817 | insn = | |
818 | emit_move_insn (stack_pointer_rtx, | |
819 | gen_rtx_PLUS (HImode, | |
820 | stack_pointer_rtx, | |
821 | gen_int_mode (-size, | |
822 | HImode))); | |
823 | RTX_FRAME_RELATED_P (insn) = 1; | |
824 | ||
825 | insn = | |
826 | emit_move_insn (frame_pointer_rtx, stack_pointer_rtx); | |
827 | RTX_FRAME_RELATED_P (insn) = 1; | |
828 | ||
829 | sp_plus_insns = get_insns (); | |
830 | end_sequence (); | |
4fc2b4ff | 831 | } |
97822902 | 832 | |
4fc2b4ff | 833 | /* Use shortest method. */ |
97822902 AS |
834 | if (size <= 6 && (get_sequence_length (sp_plus_insns) |
835 | < get_sequence_length (fp_plus_insns))) | |
836 | emit_insn (sp_plus_insns); | |
4fc2b4ff | 837 | else |
97822902 | 838 | emit_insn (fp_plus_insns); |
4fc2b4ff AH |
839 | } |
840 | } | |
78cf8279 | 841 | } |
78cf8279 MM |
842 | } |
843 | ||
4fc2b4ff | 844 | /* Output summary at end of function prologue. */ |
90e7678c | 845 | |
08c148a8 | 846 | static void |
4fc2b4ff | 847 | avr_asm_function_end_prologue (FILE *file) |
90e7678c | 848 | { |
4fc2b4ff | 849 | if (cfun->machine->is_naked) |
90e7678c | 850 | { |
e52b6b63 | 851 | fputs ("/* prologue: naked */\n", file); |
90e7678c | 852 | } |
4fc2b4ff | 853 | else |
90e7678c | 854 | { |
4fc2b4ff AH |
855 | if (cfun->machine->is_interrupt) |
856 | { | |
857 | fputs ("/* prologue: Interrupt */\n", file); | |
858 | } | |
859 | else if (cfun->machine->is_signal) | |
860 | { | |
861 | fputs ("/* prologue: Signal */\n", file); | |
862 | } | |
90e7678c | 863 | else |
4fc2b4ff | 864 | fputs ("/* prologue: function */\n", file); |
90e7678c | 865 | } |
4fc2b4ff AH |
866 | fprintf (file, "/* frame size = " HOST_WIDE_INT_PRINT_DEC " */\n", |
867 | get_frame_size()); | |
868 | } | |
93febe68 | 869 | |
908c8c7e | 870 | |
4fc2b4ff | 871 | /* Implement EPILOGUE_USES. */ |
e52b6b63 | 872 | |
4fc2b4ff AH |
873 | int |
874 | avr_epilogue_uses (int regno ATTRIBUTE_UNUSED) | |
875 | { | |
876 | if (reload_completed | |
877 | && cfun->machine | |
878 | && (cfun->machine->is_interrupt || cfun->machine->is_signal)) | |
879 | return 1; | |
880 | return 0; | |
90e7678c DC |
881 | } |
882 | ||
4fc2b4ff | 883 | /* Output RTL epilogue. */ |
90e7678c | 884 | |
4fc2b4ff AH |
885 | void |
886 | expand_epilogue (void) | |
90e7678c DC |
887 | { |
888 | int reg; | |
90e7678c | 889 | int live_seq; |
d6f77715 | 890 | HARD_REG_SET set; |
90e7678c | 891 | int minimize; |
4fc2b4ff | 892 | HOST_WIDE_INT size = get_frame_size(); |
4fc2b4ff AH |
893 | |
894 | /* epilogue: naked */ | |
895 | if (cfun->machine->is_naked) | |
e52b6b63 | 896 | { |
8819eb78 | 897 | emit_jump_insn (gen_return ()); |
4fc2b4ff | 898 | return; |
90e7678c DC |
899 | } |
900 | ||
d6f77715 | 901 | avr_regs_to_save (&set); |
90e7678c DC |
902 | live_seq = sequent_regs_live (); |
903 | minimize = (TARGET_CALL_PROLOGUES | |
0d40cc60 AS |
904 | && !cfun->machine->is_interrupt |
905 | && !cfun->machine->is_signal | |
906 | && !cfun->machine->is_OS_task | |
9b678d96 | 907 | && !cfun->machine->is_OS_main |
4fc2b4ff | 908 | && live_seq); |
90e7678c | 909 | |
96ac4c9b | 910 | if (minimize && (frame_pointer_needed || live_seq > 4)) |
90e7678c | 911 | { |
90e7678c DC |
912 | if (frame_pointer_needed) |
913 | { | |
4fc2b4ff | 914 | /* Get rid of frame. */ |
8819eb78 AS |
915 | emit_move_insn(frame_pointer_rtx, |
916 | gen_rtx_PLUS (HImode, frame_pointer_rtx, | |
917 | gen_int_mode (size, HImode))); | |
90e7678c DC |
918 | } |
919 | else | |
920 | { | |
8819eb78 | 921 | emit_move_insn (frame_pointer_rtx, stack_pointer_rtx); |
90e7678c | 922 | } |
4fc2b4ff | 923 | |
8819eb78 | 924 | emit_insn (gen_epilogue_restores (gen_int_mode (live_seq, HImode))); |
90e7678c DC |
925 | } |
926 | else | |
927 | { | |
928 | if (frame_pointer_needed) | |
929 | { | |
930 | if (size) | |
931 | { | |
4fc2b4ff | 932 | /* Try two methods to adjust stack and select shortest. */ |
97822902 AS |
933 | rtx myfp; |
934 | rtx fp_plus_insns; | |
935 | rtx sp_plus_insns = NULL_RTX; | |
936 | ||
937 | if (TARGET_TINY_STACK) | |
938 | { | |
939 | /* The high byte (r29) doesn't change - prefer 'subi' | |
940 | (1 cycle) over 'sbiw' (2 cycles, same size). */ | |
941 | myfp = gen_rtx_REG (QImode, REGNO (frame_pointer_rtx)); | |
942 | } | |
943 | else | |
944 | { | |
945 | /* Normal sized addition. */ | |
946 | myfp = frame_pointer_rtx; | |
947 | } | |
948 | ||
4fc2b4ff | 949 | /* Method 1-Adjust frame pointer. */ |
97822902 AS |
950 | start_sequence (); |
951 | ||
952 | emit_move_insn (myfp, | |
953 | gen_rtx_PLUS (HImode, myfp, | |
954 | gen_int_mode (size, | |
955 | GET_MODE(myfp)))); | |
956 | ||
957 | /* Copy to stack pointer. */ | |
794cb45e AS |
958 | if (TARGET_TINY_STACK) |
959 | { | |
960 | emit_move_insn (stack_pointer_rtx, frame_pointer_rtx); | |
961 | } | |
962 | else if (TARGET_NO_INTERRUPTS | |
963 | || cfun->machine->is_signal) | |
964 | { | |
965 | emit_insn (gen_movhi_sp_r_irq_off (stack_pointer_rtx, | |
966 | frame_pointer_rtx)); | |
967 | } | |
968 | else if (cfun->machine->is_interrupt) | |
969 | { | |
970 | emit_insn (gen_movhi_sp_r_irq_on (stack_pointer_rtx, | |
971 | frame_pointer_rtx)); | |
972 | } | |
973 | else | |
974 | { | |
975 | emit_move_insn (stack_pointer_rtx, frame_pointer_rtx); | |
976 | } | |
97822902 AS |
977 | |
978 | fp_plus_insns = get_insns (); | |
979 | end_sequence (); | |
980 | ||
4fc2b4ff | 981 | /* Method 2-Adjust Stack pointer. */ |
4fc2b4ff AH |
982 | if (size <= 5) |
983 | { | |
97822902 AS |
984 | start_sequence (); |
985 | ||
986 | emit_move_insn (stack_pointer_rtx, | |
987 | gen_rtx_PLUS (HImode, stack_pointer_rtx, | |
988 | gen_int_mode (size, | |
989 | HImode))); | |
990 | ||
991 | sp_plus_insns = get_insns (); | |
992 | end_sequence (); | |
4fc2b4ff | 993 | } |
97822902 | 994 | |
4fc2b4ff | 995 | /* Use shortest method. */ |
97822902 AS |
996 | if (size <= 5 && (get_sequence_length (sp_plus_insns) |
997 | < get_sequence_length (fp_plus_insns))) | |
998 | emit_insn (sp_plus_insns); | |
4fc2b4ff | 999 | else |
97822902 | 1000 | emit_insn (fp_plus_insns); |
4fc2b4ff | 1001 | } |
9b678d96 | 1002 | if (!(cfun->machine->is_OS_task || cfun->machine->is_OS_main)) |
0d40cc60 AS |
1003 | { |
1004 | /* Restore previous frame_pointer. */ | |
1005 | emit_insn (gen_pophi (frame_pointer_rtx)); | |
1006 | } | |
90e7678c | 1007 | } |
4fc2b4ff | 1008 | /* Restore used registers. */ |
90e7678c | 1009 | for (reg = 31; reg >= 0; --reg) |
4fc2b4ff AH |
1010 | { |
1011 | if (TEST_HARD_REG_BIT (set, reg)) | |
8819eb78 | 1012 | emit_insn (gen_popqi (gen_rtx_REG (QImode, reg))); |
4fc2b4ff AH |
1013 | } |
1014 | if (cfun->machine->is_interrupt || cfun->machine->is_signal) | |
1015 | { | |
d6f77715 AS |
1016 | /* Restore RAMPZ using tmp reg as scratch. */ |
1017 | if(AVR_HAVE_RAMPZ | |
1018 | && (TEST_HARD_REG_BIT (set, REG_Z) && TEST_HARD_REG_BIT (set, REG_Z + 1))) | |
1019 | { | |
1020 | emit_insn (gen_popqi (tmp_reg_rtx)); | |
1021 | emit_move_insn (gen_rtx_MEM(QImode, GEN_INT(RAMPZ_ADDR)), | |
1022 | tmp_reg_rtx); | |
1023 | } | |
93febe68 | 1024 | |
4fc2b4ff | 1025 | /* Restore SREG using tmp reg as scratch. */ |
8819eb78 | 1026 | emit_insn (gen_popqi (tmp_reg_rtx)); |
4fc2b4ff | 1027 | |
8819eb78 AS |
1028 | emit_move_insn (gen_rtx_MEM(QImode, GEN_INT(SREG_ADDR)), |
1029 | tmp_reg_rtx); | |
4fc2b4ff AH |
1030 | |
1031 | /* Restore tmp REG. */ | |
8819eb78 | 1032 | emit_insn (gen_popqi (tmp_reg_rtx)); |
4fc2b4ff AH |
1033 | |
1034 | /* Restore zero REG. */ | |
8819eb78 | 1035 | emit_insn (gen_popqi (zero_reg_rtx)); |
4fc2b4ff | 1036 | } |
e52b6b63 | 1037 | |
8819eb78 | 1038 | emit_jump_insn (gen_return ()); |
4fc2b4ff | 1039 | } |
90e7678c DC |
1040 | } |
1041 | ||
4fc2b4ff AH |
1042 | /* Output summary messages at beginning of function epilogue. */ |
1043 | ||
1044 | static void | |
1045 | avr_asm_function_begin_epilogue (FILE *file) | |
1046 | { | |
1047 | fprintf (file, "/* epilogue start */\n"); | |
1048 | } | |
90e7678c DC |
1049 | |
1050 | /* Return nonzero if X (an RTX) is a legitimate memory address on the target | |
1051 | machine for a memory operand of mode MODE. */ | |
1052 | ||
1053 | int | |
269e3795 | 1054 | legitimate_address_p (enum machine_mode mode, rtx x, int strict) |
90e7678c | 1055 | { |
48ccfb40 DC |
1056 | enum reg_class r = NO_REGS; |
1057 | ||
90e7678c DC |
1058 | if (TARGET_ALL_DEBUG) |
1059 | { | |
1060 | fprintf (stderr, "mode: (%s) %s %s %s %s:", | |
1061 | GET_MODE_NAME(mode), | |
1062 | strict ? "(strict)": "", | |
1063 | reload_completed ? "(reload_completed)": "", | |
1064 | reload_in_progress ? "(reload_in_progress)": "", | |
1065 | reg_renumber ? "(reg_renumber)" : ""); | |
1066 | if (GET_CODE (x) == PLUS | |
1067 | && REG_P (XEXP (x, 0)) | |
1068 | && GET_CODE (XEXP (x, 1)) == CONST_INT | |
1069 | && INTVAL (XEXP (x, 1)) >= 0 | |
3454eb73 | 1070 | && INTVAL (XEXP (x, 1)) <= MAX_LD_OFFSET (mode) |
90e7678c DC |
1071 | && reg_renumber |
1072 | ) | |
1073 | fprintf (stderr, "(r%d ---> r%d)", REGNO (XEXP (x, 0)), | |
1074 | true_regnum (XEXP (x, 0))); | |
1075 | debug_rtx (x); | |
1076 | } | |
1077 | if (REG_P (x) && (strict ? REG_OK_FOR_BASE_STRICT_P (x) | |
1078 | : REG_OK_FOR_BASE_NOSTRICT_P (x))) | |
48ccfb40 | 1079 | r = POINTER_REGS; |
90e7678c | 1080 | else if (CONSTANT_ADDRESS_P (x)) |
48ccfb40 | 1081 | r = ALL_REGS; |
90e7678c DC |
1082 | else if (GET_CODE (x) == PLUS |
1083 | && REG_P (XEXP (x, 0)) | |
1084 | && GET_CODE (XEXP (x, 1)) == CONST_INT | |
1085 | && INTVAL (XEXP (x, 1)) >= 0) | |
1086 | { | |
3454eb73 | 1087 | int fit = INTVAL (XEXP (x, 1)) <= MAX_LD_OFFSET (mode); |
90e7678c DC |
1088 | if (fit) |
1089 | { | |
1090 | if (! strict | |
6bec29c9 DC |
1091 | || REGNO (XEXP (x,0)) == REG_Y |
1092 | || REGNO (XEXP (x,0)) == REG_Z) | |
48ccfb40 | 1093 | r = BASE_POINTER_REGS; |
90e7678c DC |
1094 | if (XEXP (x,0) == frame_pointer_rtx |
1095 | || XEXP (x,0) == arg_pointer_rtx) | |
48ccfb40 | 1096 | r = BASE_POINTER_REGS; |
90e7678c DC |
1097 | } |
1098 | else if (frame_pointer_needed && XEXP (x,0) == frame_pointer_rtx) | |
48ccfb40 | 1099 | r = POINTER_Y_REGS; |
90e7678c DC |
1100 | } |
1101 | else if ((GET_CODE (x) == PRE_DEC || GET_CODE (x) == POST_INC) | |
1102 | && REG_P (XEXP (x, 0)) | |
1103 | && (strict ? REG_OK_FOR_BASE_STRICT_P (XEXP (x, 0)) | |
1104 | : REG_OK_FOR_BASE_NOSTRICT_P (XEXP (x, 0)))) | |
1105 | { | |
48ccfb40 | 1106 | r = POINTER_REGS; |
90e7678c DC |
1107 | } |
1108 | if (TARGET_ALL_DEBUG) | |
1109 | { | |
89a0b917 | 1110 | fprintf (stderr, " ret = %c\n", r + '0'); |
90e7678c | 1111 | } |
48ccfb40 | 1112 | return r == NO_REGS ? 0 : (int)r; |
90e7678c DC |
1113 | } |
1114 | ||
1115 | /* Attempts to replace X with a valid | |
1116 | memory address for an operand of mode MODE */ | |
1117 | ||
1118 | rtx | |
269e3795 | 1119 | legitimize_address (rtx x, rtx oldx, enum machine_mode mode) |
90e7678c DC |
1120 | { |
1121 | x = oldx; | |
1122 | if (TARGET_ALL_DEBUG) | |
1123 | { | |
1124 | fprintf (stderr, "legitimize_address mode: %s", GET_MODE_NAME(mode)); | |
1125 | debug_rtx (oldx); | |
1126 | } | |
1127 | ||
1128 | if (GET_CODE (oldx) == PLUS | |
1129 | && REG_P (XEXP (oldx,0))) | |
1130 | { | |
1131 | if (REG_P (XEXP (oldx,1))) | |
1132 | x = force_reg (GET_MODE (oldx), oldx); | |
1133 | else if (GET_CODE (XEXP (oldx, 1)) == CONST_INT) | |
1134 | { | |
1135 | int offs = INTVAL (XEXP (oldx,1)); | |
1136 | if (frame_pointer_rtx != XEXP (oldx,0)) | |
3454eb73 | 1137 | if (offs > MAX_LD_OFFSET (mode)) |
90e7678c DC |
1138 | { |
1139 | if (TARGET_ALL_DEBUG) | |
1140 | fprintf (stderr, "force_reg (big offset)\n"); | |
1141 | x = force_reg (GET_MODE (oldx), oldx); | |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | return x; | |
1146 | } | |
1147 | ||
1148 | ||
2c338472 | 1149 | /* Return a pointer register name as a string. */ |
90e7678c | 1150 | |
5fecfd8d | 1151 | static const char * |
269e3795 | 1152 | ptrreg_to_str (int regno) |
90e7678c DC |
1153 | { |
1154 | switch (regno) | |
1155 | { | |
1156 | case REG_X: return "X"; | |
1157 | case REG_Y: return "Y"; | |
1158 | case REG_Z: return "Z"; | |
1159 | default: | |
3639b3fa | 1160 | output_operand_lossage ("address operand requires constraint for X, Y, or Z register"); |
90e7678c DC |
1161 | } |
1162 | return NULL; | |
1163 | } | |
1164 | ||
1165 | /* Return the condition name as a string. | |
1166 | Used in conditional jump constructing */ | |
1167 | ||
5fecfd8d | 1168 | static const char * |
269e3795 | 1169 | cond_string (enum rtx_code code) |
90e7678c DC |
1170 | { |
1171 | switch (code) | |
1172 | { | |
1173 | case NE: | |
1174 | return "ne"; | |
1175 | case EQ: | |
1176 | return "eq"; | |
1177 | case GE: | |
1178 | if (cc_prev_status.flags & CC_OVERFLOW_UNUSABLE) | |
1179 | return "pl"; | |
1180 | else | |
1181 | return "ge"; | |
90e7678c DC |
1182 | case LT: |
1183 | if (cc_prev_status.flags & CC_OVERFLOW_UNUSABLE) | |
1184 | return "mi"; | |
1185 | else | |
1186 | return "lt"; | |
1187 | case GEU: | |
1188 | return "sh"; | |
90e7678c DC |
1189 | case LTU: |
1190 | return "lo"; | |
1191 | default: | |
25b9575b | 1192 | gcc_unreachable (); |
90e7678c DC |
1193 | } |
1194 | } | |
1195 | ||
2c338472 | 1196 | /* Output ADDR to FILE as address. */ |
90e7678c DC |
1197 | |
1198 | void | |
269e3795 | 1199 | print_operand_address (FILE *file, rtx addr) |
90e7678c DC |
1200 | { |
1201 | switch (GET_CODE (addr)) | |
1202 | { | |
1203 | case REG: | |
1204 | fprintf (file, ptrreg_to_str (REGNO (addr))); | |
1205 | break; | |
1206 | ||
1207 | case PRE_DEC: | |
1208 | fprintf (file, "-%s", ptrreg_to_str (REGNO (XEXP (addr, 0)))); | |
1209 | break; | |
1210 | ||
1211 | case POST_INC: | |
1212 | fprintf (file, "%s+", ptrreg_to_str (REGNO (XEXP (addr, 0)))); | |
1213 | break; | |
1214 | ||
1215 | default: | |
1216 | if (CONSTANT_ADDRESS_P (addr) | |
74b66b3c | 1217 | && ((GET_CODE (addr) == SYMBOL_REF && SYMBOL_REF_FUNCTION_P (addr)) |
1a499b92 | 1218 | || GET_CODE (addr) == LABEL_REF)) |
90e7678c | 1219 | { |
693092fb | 1220 | fprintf (file, "gs("); |
90e7678c DC |
1221 | output_addr_const (file,addr); |
1222 | fprintf (file ,")"); | |
1223 | } | |
1224 | else | |
1225 | output_addr_const (file, addr); | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | ||
2c338472 | 1230 | /* Output X as assembler operand to file FILE. */ |
90e7678c DC |
1231 | |
1232 | void | |
269e3795 | 1233 | print_operand (FILE *file, rtx x, int code) |
90e7678c DC |
1234 | { |
1235 | int abcd = 0; | |
1236 | ||
1237 | if (code >= 'A' && code <= 'D') | |
1238 | abcd = code - 'A'; | |
1239 | ||
cf14485b MM |
1240 | if (code == '~') |
1241 | { | |
5dc77808 | 1242 | if (!AVR_HAVE_JMP_CALL) |
cf14485b MM |
1243 | fputc ('r', file); |
1244 | } | |
693092fb BH |
1245 | else if (code == '!') |
1246 | { | |
1247 | if (AVR_HAVE_EIJMP_EICALL) | |
1248 | fputc ('e', file); | |
1249 | } | |
cf14485b | 1250 | else if (REG_P (x)) |
90e7678c DC |
1251 | { |
1252 | if (x == zero_reg_rtx) | |
cf14485b | 1253 | fprintf (file, "__zero_reg__"); |
90e7678c DC |
1254 | else |
1255 | fprintf (file, reg_names[true_regnum (x) + abcd]); | |
1256 | } | |
1257 | else if (GET_CODE (x) == CONST_INT) | |
7e53359d | 1258 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (x) + abcd); |
90e7678c DC |
1259 | else if (GET_CODE (x) == MEM) |
1260 | { | |
1261 | rtx addr = XEXP (x,0); | |
6bec29c9 DC |
1262 | |
1263 | if (CONSTANT_P (addr) && abcd) | |
90e7678c DC |
1264 | { |
1265 | fputc ('(', file); | |
1266 | output_address (addr); | |
1267 | fprintf (file, ")+%d", abcd); | |
1268 | } | |
cf14485b MM |
1269 | else if (code == 'o') |
1270 | { | |
1271 | if (GET_CODE (addr) != PLUS) | |
c725bd79 | 1272 | fatal_insn ("bad address, not (reg+disp):", addr); |
cf14485b MM |
1273 | |
1274 | print_operand (file, XEXP (addr, 1), 0); | |
1275 | } | |
a6990185 MM |
1276 | else if (code == 'p' || code == 'r') |
1277 | { | |
1278 | if (GET_CODE (addr) != POST_INC && GET_CODE (addr) != PRE_DEC) | |
1279 | fatal_insn ("bad address, not post_inc or pre_dec:", addr); | |
1280 | ||
1281 | if (code == 'p') | |
1282 | print_operand_address (file, XEXP (addr, 0)); /* X, Y, Z */ | |
1283 | else | |
1284 | print_operand (file, XEXP (addr, 0), 0); /* r26, r28, r30 */ | |
1285 | } | |
90e7678c DC |
1286 | else if (GET_CODE (addr) == PLUS) |
1287 | { | |
1288 | print_operand_address (file, XEXP (addr,0)); | |
1289 | if (REGNO (XEXP (addr, 0)) == REG_X) | |
c725bd79 | 1290 | fatal_insn ("internal compiler error. Bad address:" |
90e7678c DC |
1291 | ,addr); |
1292 | fputc ('+', file); | |
1293 | print_operand (file, XEXP (addr,1), code); | |
1294 | } | |
1295 | else | |
1296 | print_operand_address (file, addr); | |
1297 | } | |
1298 | else if (GET_CODE (x) == CONST_DOUBLE) | |
1299 | { | |
1300 | long val; | |
1301 | REAL_VALUE_TYPE rv; | |
1302 | if (GET_MODE (x) != SFmode) | |
c725bd79 | 1303 | fatal_insn ("internal compiler error. Unknown mode:", x); |
90e7678c DC |
1304 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); |
1305 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
761c70aa | 1306 | fprintf (file, "0x%lx", val); |
90e7678c DC |
1307 | } |
1308 | else if (code == 'j') | |
761c70aa | 1309 | fputs (cond_string (GET_CODE (x)), file); |
90e7678c | 1310 | else if (code == 'k') |
761c70aa | 1311 | fputs (cond_string (reverse_condition (GET_CODE (x))), file); |
90e7678c | 1312 | else |
cdd9eb8f | 1313 | print_operand_address (file, x); |
90e7678c DC |
1314 | } |
1315 | ||
90e7678c DC |
1316 | /* Update the condition code in the INSN. */ |
1317 | ||
1318 | void | |
269e3795 | 1319 | notice_update_cc (rtx body ATTRIBUTE_UNUSED, rtx insn) |
90e7678c | 1320 | { |
3454eb73 DC |
1321 | rtx set; |
1322 | ||
90e7678c DC |
1323 | switch (get_attr_cc (insn)) |
1324 | { | |
1325 | case CC_NONE: | |
1326 | /* Insn does not affect CC at all. */ | |
1327 | break; | |
1328 | ||
1329 | case CC_SET_N: | |
1330 | CC_STATUS_INIT; | |
1331 | break; | |
1332 | ||
1333 | case CC_SET_ZN: | |
3454eb73 DC |
1334 | set = single_set (insn); |
1335 | CC_STATUS_INIT; | |
1336 | if (set) | |
1337 | { | |
1338 | cc_status.flags |= CC_NO_OVERFLOW; | |
1339 | cc_status.value1 = SET_DEST (set); | |
1340 | } | |
90e7678c DC |
1341 | break; |
1342 | ||
1343 | case CC_SET_CZN: | |
1344 | /* Insn sets the Z,N,C flags of CC to recog_operand[0]. | |
1345 | The V flag may or may not be known but that's ok because | |
1346 | alter_cond will change tests to use EQ/NE. */ | |
3454eb73 DC |
1347 | set = single_set (insn); |
1348 | CC_STATUS_INIT; | |
1349 | if (set) | |
1350 | { | |
1351 | cc_status.value1 = SET_DEST (set); | |
1352 | cc_status.flags |= CC_OVERFLOW_UNUSABLE; | |
1353 | } | |
90e7678c DC |
1354 | break; |
1355 | ||
1356 | case CC_COMPARE: | |
3454eb73 DC |
1357 | set = single_set (insn); |
1358 | CC_STATUS_INIT; | |
1359 | if (set) | |
1360 | cc_status.value1 = SET_SRC (set); | |
90e7678c | 1361 | break; |
3454eb73 | 1362 | |
90e7678c DC |
1363 | case CC_CLOBBER: |
1364 | /* Insn doesn't leave CC in a usable state. */ | |
1365 | CC_STATUS_INIT; | |
3454eb73 DC |
1366 | |
1367 | /* Correct CC for the ashrqi3 with the shift count as CONST_INT != 6 */ | |
1368 | set = single_set (insn); | |
1369 | if (set) | |
1370 | { | |
1371 | rtx src = SET_SRC (set); | |
1372 | ||
1373 | if (GET_CODE (src) == ASHIFTRT | |
1374 | && GET_MODE (src) == QImode) | |
1375 | { | |
1376 | rtx x = XEXP (src, 1); | |
1377 | ||
1378 | if (GET_CODE (x) == CONST_INT | |
a3cf5992 | 1379 | && INTVAL (x) > 0 |
3454eb73 DC |
1380 | && INTVAL (x) != 6) |
1381 | { | |
1382 | cc_status.value1 = SET_DEST (set); | |
1383 | cc_status.flags |= CC_OVERFLOW_UNUSABLE; | |
1384 | } | |
1385 | } | |
1386 | } | |
90e7678c DC |
1387 | break; |
1388 | } | |
1389 | } | |
1390 | ||
1391 | /* Return maximum number of consecutive registers of | |
1392 | class CLASS needed to hold a value of mode MODE. */ | |
1393 | ||
1394 | int | |
269e3795 | 1395 | class_max_nregs (enum reg_class class ATTRIBUTE_UNUSED,enum machine_mode mode) |
90e7678c DC |
1396 | { |
1397 | return ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD); | |
1398 | } | |
1399 | ||
1400 | /* Choose mode for jump insn: | |
1401 | 1 - relative jump in range -63 <= x <= 62 ; | |
1402 | 2 - relative jump in range -2046 <= x <= 2045 ; | |
1403 | 3 - absolute jump (only for ATmega[16]03). */ | |
1404 | ||
1405 | int | |
269e3795 | 1406 | avr_jump_mode (rtx x, rtx insn) |
90e7678c | 1407 | { |
9d98a694 AO |
1408 | int dest_addr = INSN_ADDRESSES (INSN_UID (GET_MODE (x) == LABEL_REF |
1409 | ? XEXP (x, 0) : x)); | |
1410 | int cur_addr = INSN_ADDRESSES (INSN_UID (insn)); | |
90e7678c DC |
1411 | int jump_distance = cur_addr - dest_addr; |
1412 | ||
1413 | if (-63 <= jump_distance && jump_distance <= 62) | |
1414 | return 1; | |
1415 | else if (-2046 <= jump_distance && jump_distance <= 2045) | |
1416 | return 2; | |
5dc77808 | 1417 | else if (AVR_HAVE_JMP_CALL) |
90e7678c DC |
1418 | return 3; |
1419 | ||
1420 | return 2; | |
1421 | } | |
1422 | ||
56b871c1 DC |
1423 | /* return an AVR condition jump commands. |
1424 | X is a comparison RTX. | |
1425 | LEN is a number returned by avr_jump_mode function. | |
1426 | if REVERSE nonzero then condition code in X must be reversed. */ | |
90e7678c | 1427 | |
5fecfd8d | 1428 | const char * |
269e3795 | 1429 | ret_cond_branch (rtx x, int len, int reverse) |
90e7678c | 1430 | { |
56b871c1 DC |
1431 | RTX_CODE cond = reverse ? reverse_condition (GET_CODE (x)) : GET_CODE (x); |
1432 | ||
90e7678c DC |
1433 | switch (cond) |
1434 | { | |
1435 | case GT: | |
1436 | if (cc_prev_status.flags & CC_OVERFLOW_UNUSABLE) | |
13e8651c | 1437 | return (len == 1 ? (AS1 (breq,.+2) CR_TAB |
90e7678c | 1438 | AS1 (brpl,%0)) : |
13e8651c TR |
1439 | len == 2 ? (AS1 (breq,.+4) CR_TAB |
1440 | AS1 (brmi,.+2) CR_TAB | |
90e7678c | 1441 | AS1 (rjmp,%0)) : |
13e8651c TR |
1442 | (AS1 (breq,.+6) CR_TAB |
1443 | AS1 (brmi,.+4) CR_TAB | |
90e7678c DC |
1444 | AS1 (jmp,%0))); |
1445 | ||
1446 | else | |
13e8651c | 1447 | return (len == 1 ? (AS1 (breq,.+2) CR_TAB |
90e7678c | 1448 | AS1 (brge,%0)) : |
13e8651c TR |
1449 | len == 2 ? (AS1 (breq,.+4) CR_TAB |
1450 | AS1 (brlt,.+2) CR_TAB | |
90e7678c | 1451 | AS1 (rjmp,%0)) : |
13e8651c TR |
1452 | (AS1 (breq,.+6) CR_TAB |
1453 | AS1 (brlt,.+4) CR_TAB | |
90e7678c DC |
1454 | AS1 (jmp,%0))); |
1455 | case GTU: | |
13e8651c | 1456 | return (len == 1 ? (AS1 (breq,.+2) CR_TAB |
90e7678c | 1457 | AS1 (brsh,%0)) : |
13e8651c TR |
1458 | len == 2 ? (AS1 (breq,.+4) CR_TAB |
1459 | AS1 (brlo,.+2) CR_TAB | |
90e7678c | 1460 | AS1 (rjmp,%0)) : |
13e8651c TR |
1461 | (AS1 (breq,.+6) CR_TAB |
1462 | AS1 (brlo,.+4) CR_TAB | |
90e7678c DC |
1463 | AS1 (jmp,%0))); |
1464 | case LE: | |
1465 | if (cc_prev_status.flags & CC_OVERFLOW_UNUSABLE) | |
1466 | return (len == 1 ? (AS1 (breq,%0) CR_TAB | |
1467 | AS1 (brmi,%0)) : | |
13e8651c TR |
1468 | len == 2 ? (AS1 (breq,.+2) CR_TAB |
1469 | AS1 (brpl,.+2) CR_TAB | |
90e7678c | 1470 | AS1 (rjmp,%0)) : |
13e8651c TR |
1471 | (AS1 (breq,.+2) CR_TAB |
1472 | AS1 (brpl,.+4) CR_TAB | |
90e7678c DC |
1473 | AS1 (jmp,%0))); |
1474 | else | |
1475 | return (len == 1 ? (AS1 (breq,%0) CR_TAB | |
1476 | AS1 (brlt,%0)) : | |
13e8651c TR |
1477 | len == 2 ? (AS1 (breq,.+2) CR_TAB |
1478 | AS1 (brge,.+2) CR_TAB | |
90e7678c | 1479 | AS1 (rjmp,%0)) : |
13e8651c TR |
1480 | (AS1 (breq,.+2) CR_TAB |
1481 | AS1 (brge,.+4) CR_TAB | |
90e7678c DC |
1482 | AS1 (jmp,%0))); |
1483 | case LEU: | |
1484 | return (len == 1 ? (AS1 (breq,%0) CR_TAB | |
1485 | AS1 (brlo,%0)) : | |
13e8651c TR |
1486 | len == 2 ? (AS1 (breq,.+2) CR_TAB |
1487 | AS1 (brsh,.+2) CR_TAB | |
90e7678c | 1488 | AS1 (rjmp,%0)) : |
13e8651c TR |
1489 | (AS1 (breq,.+2) CR_TAB |
1490 | AS1 (brsh,.+4) CR_TAB | |
90e7678c DC |
1491 | AS1 (jmp,%0))); |
1492 | default: | |
56b871c1 DC |
1493 | if (reverse) |
1494 | { | |
1495 | switch (len) | |
1496 | { | |
1497 | case 1: | |
1498 | return AS1 (br%k1,%0); | |
1499 | case 2: | |
13e8651c | 1500 | return (AS1 (br%j1,.+2) CR_TAB |
56b871c1 DC |
1501 | AS1 (rjmp,%0)); |
1502 | default: | |
13e8651c | 1503 | return (AS1 (br%j1,.+4) CR_TAB |
56b871c1 DC |
1504 | AS1 (jmp,%0)); |
1505 | } | |
1506 | } | |
1507 | else | |
1508 | { | |
1509 | switch (len) | |
1510 | { | |
1511 | case 1: | |
1512 | return AS1 (br%j1,%0); | |
1513 | case 2: | |
13e8651c | 1514 | return (AS1 (br%k1,.+2) CR_TAB |
56b871c1 DC |
1515 | AS1 (rjmp,%0)); |
1516 | default: | |
13e8651c | 1517 | return (AS1 (br%k1,.+4) CR_TAB |
56b871c1 DC |
1518 | AS1 (jmp,%0)); |
1519 | } | |
1520 | } | |
90e7678c DC |
1521 | } |
1522 | return ""; | |
1523 | } | |
1524 | ||
1525 | /* Predicate function for immediate operand which fits to byte (8bit) */ | |
1526 | ||
1527 | int | |
269e3795 | 1528 | byte_immediate_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED) |
90e7678c DC |
1529 | { |
1530 | return (GET_CODE (op) == CONST_INT | |
1531 | && INTVAL (op) <= 0xff && INTVAL (op) >= 0); | |
1532 | } | |
1533 | ||
1534 | /* Output all insn addresses and their sizes into the assembly language | |
1535 | output file. This is helpful for debugging whether the length attributes | |
1536 | in the md file are correct. | |
1537 | Output insn cost for next insn. */ | |
1538 | ||
1539 | void | |
269e3795 SB |
1540 | final_prescan_insn (rtx insn, rtx *operand ATTRIBUTE_UNUSED, |
1541 | int num_operands ATTRIBUTE_UNUSED) | |
90e7678c DC |
1542 | { |
1543 | int uid = INSN_UID (insn); | |
1544 | ||
1545 | if (TARGET_INSN_SIZE_DUMP || TARGET_ALL_DEBUG) | |
1546 | { | |
9d98a694 AO |
1547 | fprintf (asm_out_file, "/*DEBUG: 0x%x\t\t%d\t%d */\n", |
1548 | INSN_ADDRESSES (uid), | |
1549 | INSN_ADDRESSES (uid) - last_insn_address, | |
1550 | rtx_cost (PATTERN (insn), INSN)); | |
90e7678c | 1551 | } |
9d98a694 | 1552 | last_insn_address = INSN_ADDRESSES (uid); |
90e7678c DC |
1553 | } |
1554 | ||
5fecfd8d | 1555 | /* Return 0 if undefined, 1 if always true or always false. */ |
90e7678c DC |
1556 | |
1557 | int | |
269e3795 | 1558 | avr_simplify_comparison_p (enum machine_mode mode, RTX_CODE operator, rtx x) |
90e7678c DC |
1559 | { |
1560 | unsigned int max = (mode == QImode ? 0xff : | |
1561 | mode == HImode ? 0xffff : | |
11f9ed1a | 1562 | mode == SImode ? 0xffffffff : 0); |
90e7678c DC |
1563 | if (max && operator && GET_CODE (x) == CONST_INT) |
1564 | { | |
1565 | if (unsigned_condition (operator) != operator) | |
1566 | max >>= 1; | |
1567 | ||
1568 | if (max != (INTVAL (x) & max) | |
1569 | && INTVAL (x) != 0xff) | |
1570 | return 1; | |
1571 | } | |
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | ||
1576 | /* Returns nonzero if REGNO is the number of a hard | |
1577 | register in which function arguments are sometimes passed. */ | |
1578 | ||
1579 | int | |
269e3795 | 1580 | function_arg_regno_p(int r) |
90e7678c DC |
1581 | { |
1582 | return (r >= 8 && r <= 25); | |
1583 | } | |
1584 | ||
1585 | /* Initializing the variable cum for the state at the beginning | |
1586 | of the argument list. */ | |
1587 | ||
1588 | void | |
269e3795 SB |
1589 | init_cumulative_args (CUMULATIVE_ARGS *cum, tree fntype, rtx libname, |
1590 | tree fndecl ATTRIBUTE_UNUSED) | |
90e7678c DC |
1591 | { |
1592 | cum->nregs = 18; | |
1593 | cum->regno = FIRST_CUM_REG; | |
d0749053 | 1594 | if (!libname && fntype) |
90e7678c DC |
1595 | { |
1596 | int stdarg = (TYPE_ARG_TYPES (fntype) != 0 | |
1597 | && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype))) | |
1598 | != void_type_node)); | |
1599 | if (stdarg) | |
1600 | cum->nregs = 0; | |
1601 | } | |
1602 | } | |
1603 | ||
c4984bad MM |
1604 | /* Returns the number of registers to allocate for a function argument. */ |
1605 | ||
1606 | static int | |
269e3795 | 1607 | avr_num_arg_regs (enum machine_mode mode, tree type) |
c4984bad MM |
1608 | { |
1609 | int size; | |
1610 | ||
1611 | if (mode == BLKmode) | |
1612 | size = int_size_in_bytes (type); | |
1613 | else | |
1614 | size = GET_MODE_SIZE (mode); | |
1615 | ||
afee2a52 MM |
1616 | /* Align all function arguments to start in even-numbered registers. |
1617 | Odd-sized arguments leave holes above them. */ | |
c4984bad | 1618 | |
afee2a52 | 1619 | return (size + 1) & ~1; |
c4984bad MM |
1620 | } |
1621 | ||
90e7678c | 1622 | /* Controls whether a function argument is passed |
2c338472 | 1623 | in a register, and which register. */ |
90e7678c DC |
1624 | |
1625 | rtx | |
269e3795 SB |
1626 | function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type, |
1627 | int named ATTRIBUTE_UNUSED) | |
90e7678c | 1628 | { |
c4984bad | 1629 | int bytes = avr_num_arg_regs (mode, type); |
90e7678c DC |
1630 | |
1631 | if (cum->nregs && bytes <= cum->nregs) | |
f1c25d3b | 1632 | return gen_rtx_REG (mode, cum->regno - bytes); |
c4984bad | 1633 | |
90e7678c DC |
1634 | return NULL_RTX; |
1635 | } | |
1636 | ||
1637 | /* Update the summarizer variable CUM to advance past an argument | |
1638 | in the argument list. */ | |
1639 | ||
1640 | void | |
269e3795 SB |
1641 | function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type, |
1642 | int named ATTRIBUTE_UNUSED) | |
90e7678c | 1643 | { |
c4984bad | 1644 | int bytes = avr_num_arg_regs (mode, type); |
90e7678c | 1645 | |
90e7678c DC |
1646 | cum->nregs -= bytes; |
1647 | cum->regno -= bytes; | |
1648 | ||
1649 | if (cum->nregs <= 0) | |
1650 | { | |
1651 | cum->nregs = 0; | |
1652 | cum->regno = FIRST_CUM_REG; | |
1653 | } | |
90e7678c DC |
1654 | } |
1655 | ||
1656 | /*********************************************************************** | |
1657 | Functions for outputting various mov's for a various modes | |
1658 | ************************************************************************/ | |
5fecfd8d | 1659 | const char * |
269e3795 | 1660 | output_movqi (rtx insn, rtx operands[], int *l) |
90e7678c | 1661 | { |
6bec29c9 DC |
1662 | int dummy; |
1663 | rtx dest = operands[0]; | |
1664 | rtx src = operands[1]; | |
1665 | int *real_l = l; | |
1666 | ||
1667 | if (!l) | |
1668 | l = &dummy; | |
1669 | ||
1670 | *l = 1; | |
1671 | ||
1672 | if (register_operand (dest, QImode)) | |
90e7678c | 1673 | { |
6bec29c9 | 1674 | if (register_operand (src, QImode)) /* mov r,r */ |
90e7678c | 1675 | { |
6bec29c9 DC |
1676 | if (test_hard_reg_class (STACK_REG, dest)) |
1677 | return AS2 (out,%0,%1); | |
1678 | else if (test_hard_reg_class (STACK_REG, src)) | |
1679 | return AS2 (in,%0,%1); | |
1680 | ||
1681 | return AS2 (mov,%0,%1); | |
1682 | } | |
1683 | else if (CONSTANT_P (src)) | |
1684 | { | |
1685 | if (test_hard_reg_class (LD_REGS, dest)) /* ldi d,i */ | |
1686 | return AS2 (ldi,%0,lo8(%1)); | |
1687 | ||
1688 | if (GET_CODE (src) == CONST_INT) | |
90e7678c | 1689 | { |
6bec29c9 DC |
1690 | if (src == const0_rtx) /* mov r,L */ |
1691 | return AS1 (clr,%0); | |
1692 | else if (src == const1_rtx) | |
90e7678c | 1693 | { |
6bec29c9 DC |
1694 | *l = 2; |
1695 | return (AS1 (clr,%0) CR_TAB | |
1696 | AS1 (inc,%0)); | |
1697 | } | |
6bec29c9 | 1698 | else if (src == constm1_rtx) |
90e7678c | 1699 | { |
6bec29c9 | 1700 | /* Immediate constants -1 to any register */ |
6bec29c9 DC |
1701 | *l = 2; |
1702 | return (AS1 (clr,%0) CR_TAB | |
1703 | AS1 (dec,%0)); | |
90e7678c | 1704 | } |
afee2a52 MM |
1705 | else |
1706 | { | |
1707 | int bit_nr = exact_log2 (INTVAL (src)); | |
1708 | ||
1709 | if (bit_nr >= 0) | |
1710 | { | |
6001794d KH |
1711 | *l = 3; |
1712 | if (!real_l) | |
1713 | output_asm_insn ((AS1 (clr,%0) CR_TAB | |
1714 | "set"), operands); | |
afee2a52 MM |
1715 | if (!real_l) |
1716 | avr_output_bld (operands, bit_nr); | |
1717 | ||
1718 | return ""; | |
1719 | } | |
1720 | } | |
90e7678c | 1721 | } |
6bec29c9 DC |
1722 | |
1723 | /* Last resort, larger than loading from memory. */ | |
1724 | *l = 4; | |
1725 | return (AS2 (mov,__tmp_reg__,r31) CR_TAB | |
1726 | AS2 (ldi,r31,lo8(%1)) CR_TAB | |
1727 | AS2 (mov,%0,r31) CR_TAB | |
1728 | AS2 (mov,r31,__tmp_reg__)); | |
1729 | } | |
1730 | else if (GET_CODE (src) == MEM) | |
1731 | return out_movqi_r_mr (insn, operands, real_l); /* mov r,m */ | |
1732 | } | |
1733 | else if (GET_CODE (dest) == MEM) | |
1734 | { | |
5fecfd8d MM |
1735 | const char *template; |
1736 | ||
1737 | if (src == const0_rtx) | |
1738 | operands[1] = zero_reg_rtx; | |
1739 | ||
6bec29c9 DC |
1740 | template = out_movqi_mr_r (insn, operands, real_l); |
1741 | ||
1742 | if (!real_l) | |
1743 | output_asm_insn (template, operands); | |
5fecfd8d MM |
1744 | |
1745 | operands[1] = src; | |
6bec29c9 DC |
1746 | } |
1747 | return ""; | |
1748 | } | |
1749 | ||
1750 | ||
5fecfd8d | 1751 | const char * |
269e3795 | 1752 | output_movhi (rtx insn, rtx operands[], int *l) |
6bec29c9 DC |
1753 | { |
1754 | int dummy; | |
1755 | rtx dest = operands[0]; | |
1756 | rtx src = operands[1]; | |
1757 | int *real_l = l; | |
1758 | ||
1759 | if (!l) | |
1760 | l = &dummy; | |
1761 | ||
1762 | if (register_operand (dest, HImode)) | |
1763 | { | |
1764 | if (register_operand (src, HImode)) /* mov r,r */ | |
1765 | { | |
1766 | if (test_hard_reg_class (STACK_REG, dest)) | |
90e7678c | 1767 | { |
6bec29c9 | 1768 | if (TARGET_TINY_STACK) |
794cb45e AS |
1769 | return *l = 1, AS2 (out,__SP_L__,%A1); |
1770 | /* Use simple load of stack pointer if no interrupts are | |
1771 | used. */ | |
1772 | else if (TARGET_NO_INTERRUPTS) | |
1773 | return *l = 2, (AS2 (out,__SP_H__,%B1) CR_TAB | |
1774 | AS2 (out,__SP_L__,%A1)); | |
6bec29c9 DC |
1775 | *l = 5; |
1776 | return (AS2 (in,__tmp_reg__,__SREG__) CR_TAB | |
1777 | "cli" CR_TAB | |
1778 | AS2 (out,__SP_H__,%B1) CR_TAB | |
1779 | AS2 (out,__SREG__,__tmp_reg__) CR_TAB | |
1780 | AS2 (out,__SP_L__,%A1)); | |
1781 | } | |
1782 | else if (test_hard_reg_class (STACK_REG, src)) | |
1783 | { | |
1784 | *l = 2; | |
1785 | return (AS2 (in,%A0,__SP_L__) CR_TAB | |
1786 | AS2 (in,%B0,__SP_H__)); | |
1787 | } | |
1788 | ||
4301ec4f | 1789 | if (AVR_HAVE_MOVW) |
6bec29c9 DC |
1790 | { |
1791 | *l = 1; | |
1792 | return (AS2 (movw,%0,%1)); | |
1793 | } | |
6bec29c9 DC |
1794 | else |
1795 | { | |
1796 | *l = 2; | |
1797 | return (AS2 (mov,%A0,%A1) CR_TAB | |
1798 | AS2 (mov,%B0,%B1)); | |
1799 | } | |
1800 | } | |
1801 | else if (CONSTANT_P (src)) | |
1802 | { | |
1803 | if (test_hard_reg_class (LD_REGS, dest)) /* ldi d,i */ | |
1804 | { | |
1805 | *l = 2; | |
1806 | return (AS2 (ldi,%A0,lo8(%1)) CR_TAB | |
1807 | AS2 (ldi,%B0,hi8(%1))); | |
1808 | } | |
1809 | ||
1810 | if (GET_CODE (src) == CONST_INT) | |
1811 | { | |
1812 | if (src == const0_rtx) /* mov r,L */ | |
1813 | { | |
1814 | *l = 2; | |
1815 | return (AS1 (clr,%A0) CR_TAB | |
1816 | AS1 (clr,%B0)); | |
1817 | } | |
1818 | else if (src == const1_rtx) | |
1819 | { | |
08f81276 MM |
1820 | *l = 3; |
1821 | return (AS1 (clr,%A0) CR_TAB | |
1822 | AS1 (clr,%B0) CR_TAB | |
1823 | AS1 (inc,%A0)); | |
6bec29c9 | 1824 | } |
6bec29c9 DC |
1825 | else if (src == constm1_rtx) |
1826 | { | |
1827 | /* Immediate constants -1 to any register */ | |
6bec29c9 DC |
1828 | *l = 3; |
1829 | return (AS1 (clr,%0) CR_TAB | |
1830 | AS1 (dec,%A0) CR_TAB | |
1831 | AS2 (mov,%B0,%A0)); | |
1832 | } | |
afee2a52 MM |
1833 | else |
1834 | { | |
1835 | int bit_nr = exact_log2 (INTVAL (src)); | |
1836 | ||
1837 | if (bit_nr >= 0) | |
1838 | { | |
6001794d KH |
1839 | *l = 4; |
1840 | if (!real_l) | |
1841 | output_asm_insn ((AS1 (clr,%A0) CR_TAB | |
1842 | AS1 (clr,%B0) CR_TAB | |
1843 | "set"), operands); | |
afee2a52 MM |
1844 | if (!real_l) |
1845 | avr_output_bld (operands, bit_nr); | |
1846 | ||
1847 | return ""; | |
1848 | } | |
1849 | } | |
1850 | ||
6bec29c9 DC |
1851 | if ((INTVAL (src) & 0xff) == 0) |
1852 | { | |
1853 | *l = 5; | |
1854 | return (AS2 (mov,__tmp_reg__,r31) CR_TAB | |
1855 | AS1 (clr,%A0) CR_TAB | |
1856 | AS2 (ldi,r31,hi8(%1)) CR_TAB | |
1857 | AS2 (mov,%B0,r31) CR_TAB | |
1858 | AS2 (mov,r31,__tmp_reg__)); | |
1859 | } | |
1860 | else if ((INTVAL (src) & 0xff00) == 0) | |
1861 | { | |
1862 | *l = 5; | |
1863 | return (AS2 (mov,__tmp_reg__,r31) CR_TAB | |
1864 | AS2 (ldi,r31,lo8(%1)) CR_TAB | |
1865 | AS2 (mov,%A0,r31) CR_TAB | |
1866 | AS1 (clr,%B0) CR_TAB | |
1867 | AS2 (mov,r31,__tmp_reg__)); | |
90e7678c | 1868 | } |
90e7678c | 1869 | } |
6bec29c9 DC |
1870 | |
1871 | /* Last resort, equal to loading from memory. */ | |
1872 | *l = 6; | |
1873 | return (AS2 (mov,__tmp_reg__,r31) CR_TAB | |
1874 | AS2 (ldi,r31,lo8(%1)) CR_TAB | |
1875 | AS2 (mov,%A0,r31) CR_TAB | |
1876 | AS2 (ldi,r31,hi8(%1)) CR_TAB | |
1877 | AS2 (mov,%B0,r31) CR_TAB | |
1878 | AS2 (mov,r31,__tmp_reg__)); | |
1879 | } | |
1880 | else if (GET_CODE (src) == MEM) | |
1881 | return out_movhi_r_mr (insn, operands, real_l); /* mov r,m */ | |
1882 | } | |
1883 | else if (GET_CODE (dest) == MEM) | |
1884 | { | |
5fecfd8d MM |
1885 | const char *template; |
1886 | ||
1887 | if (src == const0_rtx) | |
1888 | operands[1] = zero_reg_rtx; | |
1889 | ||
6bec29c9 DC |
1890 | template = out_movhi_mr_r (insn, operands, real_l); |
1891 | ||
1892 | if (!real_l) | |
1893 | output_asm_insn (template, operands); | |
5fecfd8d MM |
1894 | |
1895 | operands[1] = src; | |
6bec29c9 | 1896 | return ""; |
90e7678c | 1897 | } |
c725bd79 | 1898 | fatal_insn ("invalid insn:", insn); |
6bec29c9 DC |
1899 | return ""; |
1900 | } | |
1901 | ||
5fecfd8d | 1902 | const char * |
269e3795 | 1903 | out_movqi_r_mr (rtx insn, rtx op[], int *l) |
6bec29c9 | 1904 | { |
5fecfd8d MM |
1905 | rtx dest = op[0]; |
1906 | rtx src = op[1]; | |
1907 | rtx x = XEXP (src, 0); | |
6bec29c9 DC |
1908 | int dummy; |
1909 | ||
1910 | if (!l) | |
1911 | l = &dummy; | |
6bec29c9 DC |
1912 | |
1913 | if (CONSTANT_ADDRESS_P (x)) | |
1914 | { | |
4fc2b4ff AH |
1915 | if (CONST_INT_P (x) && INTVAL (x) == SREG_ADDR) |
1916 | { | |
1917 | *l = 1; | |
1918 | return AS2 (in,%0,__SREG__); | |
1919 | } | |
e6b69d0e | 1920 | if (optimize > 0 && io_address_operand (x, QImode)) |
6bec29c9 DC |
1921 | { |
1922 | *l = 1; | |
1923 | return AS2 (in,%0,%1-0x20); | |
1924 | } | |
1925 | *l = 2; | |
1926 | return AS2 (lds,%0,%1); | |
1927 | } | |
1928 | /* memory access by reg+disp */ | |
1929 | else if (GET_CODE (x) == PLUS | |
1930 | && REG_P (XEXP (x,0)) | |
1931 | && GET_CODE (XEXP (x,1)) == CONST_INT) | |
1932 | { | |
5fecfd8d | 1933 | if ((INTVAL (XEXP (x,1)) - GET_MODE_SIZE (GET_MODE (src))) >= 63) |
6bec29c9 DC |
1934 | { |
1935 | int disp = INTVAL (XEXP (x,1)); | |
1936 | if (REGNO (XEXP (x,0)) != REG_Y) | |
c725bd79 | 1937 | fatal_insn ("incorrect insn:",insn); |
33d5e2dc | 1938 | |
5fecfd8d | 1939 | if (disp <= 63 + MAX_LD_OFFSET (GET_MODE (src))) |
33d5e2dc MM |
1940 | return *l = 3, (AS2 (adiw,r28,%o1-63) CR_TAB |
1941 | AS2 (ldd,%0,Y+63) CR_TAB | |
1942 | AS2 (sbiw,r28,%o1-63)); | |
1943 | ||
1944 | return *l = 5, (AS2 (subi,r28,lo8(-%o1)) CR_TAB | |
1945 | AS2 (sbci,r29,hi8(-%o1)) CR_TAB | |
1946 | AS2 (ld,%0,Y) CR_TAB | |
1947 | AS2 (subi,r28,lo8(%o1)) CR_TAB | |
1948 | AS2 (sbci,r29,hi8(%o1))); | |
6bec29c9 DC |
1949 | } |
1950 | else if (REGNO (XEXP (x,0)) == REG_X) | |
1951 | { | |
6bec29c9 DC |
1952 | /* This is a paranoid case LEGITIMIZE_RELOAD_ADDRESS must exclude |
1953 | it but I have this situation with extremal optimizing options. */ | |
5fecfd8d | 1954 | if (reg_overlap_mentioned_p (dest, XEXP (x,0)) |
6bec29c9 | 1955 | || reg_unused_after (insn, XEXP (x,0))) |
33d5e2dc MM |
1956 | return *l = 2, (AS2 (adiw,r26,%o1) CR_TAB |
1957 | AS2 (ld,%0,X)); | |
1958 | ||
1959 | return *l = 3, (AS2 (adiw,r26,%o1) CR_TAB | |
1960 | AS2 (ld,%0,X) CR_TAB | |
1961 | AS2 (sbiw,r26,%o1)); | |
6bec29c9 DC |
1962 | } |
1963 | *l = 1; | |
1964 | return AS2 (ldd,%0,%1); | |
1965 | } | |
1966 | *l = 1; | |
1967 | return AS2 (ld,%0,%1); | |
90e7678c DC |
1968 | } |
1969 | ||
5fecfd8d | 1970 | const char * |
269e3795 | 1971 | out_movhi_r_mr (rtx insn, rtx op[], int *l) |
90e7678c | 1972 | { |
5fecfd8d MM |
1973 | rtx dest = op[0]; |
1974 | rtx src = op[1]; | |
1975 | rtx base = XEXP (src, 0); | |
1976 | int reg_dest = true_regnum (dest); | |
1977 | int reg_base = true_regnum (base); | |
a6990185 MM |
1978 | /* "volatile" forces reading low byte first, even if less efficient, |
1979 | for correct operation with 16-bit I/O registers. */ | |
1980 | int mem_volatile_p = MEM_VOLATILE_P (src); | |
6bec29c9 | 1981 | int tmp; |
90e7678c DC |
1982 | |
1983 | if (!l) | |
6bec29c9 | 1984 | l = &tmp; |
90e7678c DC |
1985 | |
1986 | if (reg_base > 0) | |
1987 | { | |
1988 | if (reg_dest == reg_base) /* R = (R) */ | |
6bec29c9 DC |
1989 | { |
1990 | *l = 3; | |
1991 | return (AS2 (ld,__tmp_reg__,%1+) CR_TAB | |
1992 | AS2 (ld,%B0,%1) CR_TAB | |
1993 | AS2 (mov,%A0,__tmp_reg__)); | |
1994 | } | |
90e7678c DC |
1995 | else if (reg_base == REG_X) /* (R26) */ |
1996 | { | |
5fecfd8d | 1997 | if (reg_unused_after (insn, base)) |
6bec29c9 DC |
1998 | { |
1999 | *l = 2; | |
2000 | return (AS2 (ld,%A0,X+) CR_TAB | |
2001 | AS2 (ld,%B0,X)); | |
2002 | } | |
2003 | *l = 3; | |
2004 | return (AS2 (ld,%A0,X+) CR_TAB | |
2005 | AS2 (ld,%B0,X) CR_TAB | |
2006 | AS2 (sbiw,r26,1)); | |
90e7678c DC |
2007 | } |
2008 | else /* (R) */ | |
6bec29c9 DC |
2009 | { |
2010 | *l = 2; | |
2011 | return (AS2 (ld,%A0,%1) CR_TAB | |
2012 | AS2 (ldd,%B0,%1+1)); | |
2013 | } | |
90e7678c | 2014 | } |
5fecfd8d | 2015 | else if (GET_CODE (base) == PLUS) /* (R + i) */ |
90e7678c | 2016 | { |
5fecfd8d MM |
2017 | int disp = INTVAL (XEXP (base, 1)); |
2018 | int reg_base = true_regnum (XEXP (base, 0)); | |
90e7678c | 2019 | |
5fecfd8d | 2020 | if (disp > MAX_LD_OFFSET (GET_MODE (src))) |
90e7678c | 2021 | { |
5fecfd8d | 2022 | if (REGNO (XEXP (base, 0)) != REG_Y) |
c725bd79 | 2023 | fatal_insn ("incorrect insn:",insn); |
6bec29c9 | 2024 | |
5fecfd8d | 2025 | if (disp <= 63 + MAX_LD_OFFSET (GET_MODE (src))) |
33d5e2dc MM |
2026 | return *l = 4, (AS2 (adiw,r28,%o1-62) CR_TAB |
2027 | AS2 (ldd,%A0,Y+62) CR_TAB | |
2028 | AS2 (ldd,%B0,Y+63) CR_TAB | |
2029 | AS2 (sbiw,r28,%o1-62)); | |
2030 | ||
2031 | return *l = 6, (AS2 (subi,r28,lo8(-%o1)) CR_TAB | |
2032 | AS2 (sbci,r29,hi8(-%o1)) CR_TAB | |
2033 | AS2 (ld,%A0,Y) CR_TAB | |
2034 | AS2 (ldd,%B0,Y+1) CR_TAB | |
2035 | AS2 (subi,r28,lo8(%o1)) CR_TAB | |
2036 | AS2 (sbci,r29,hi8(%o1))); | |
90e7678c DC |
2037 | } |
2038 | if (reg_base == REG_X) | |
2039 | { | |
2040 | /* This is a paranoid case. LEGITIMIZE_RELOAD_ADDRESS must exclude | |
6bec29c9 DC |
2041 | it but I have this situation with extremal |
2042 | optimization options. */ | |
2043 | ||
33d5e2dc | 2044 | *l = 4; |
6bec29c9 | 2045 | if (reg_base == reg_dest) |
33d5e2dc MM |
2046 | return (AS2 (adiw,r26,%o1) CR_TAB |
2047 | AS2 (ld,__tmp_reg__,X+) CR_TAB | |
2048 | AS2 (ld,%B0,X) CR_TAB | |
2049 | AS2 (mov,%A0,__tmp_reg__)); | |
6bec29c9 | 2050 | |
33d5e2dc MM |
2051 | return (AS2 (adiw,r26,%o1) CR_TAB |
2052 | AS2 (ld,%A0,X+) CR_TAB | |
2053 | AS2 (ld,%B0,X) CR_TAB | |
2054 | AS2 (sbiw,r26,%o1+1)); | |
6bec29c9 DC |
2055 | } |
2056 | ||
2057 | if (reg_base == reg_dest) | |
2058 | { | |
2059 | *l = 3; | |
2060 | return (AS2 (ldd,__tmp_reg__,%A1) CR_TAB | |
2061 | AS2 (ldd,%B0,%B1) CR_TAB | |
2062 | AS2 (mov,%A0,__tmp_reg__)); | |
90e7678c DC |
2063 | } |
2064 | ||
6bec29c9 DC |
2065 | *l = 2; |
2066 | return (AS2 (ldd,%A0,%A1) CR_TAB | |
2067 | AS2 (ldd,%B0,%B1)); | |
90e7678c | 2068 | } |
5fecfd8d | 2069 | else if (GET_CODE (base) == PRE_DEC) /* (--R) */ |
90e7678c | 2070 | { |
5fecfd8d | 2071 | if (reg_overlap_mentioned_p (dest, XEXP (base, 0))) |
c725bd79 | 2072 | fatal_insn ("incorrect insn:", insn); |
6bec29c9 | 2073 | |
a6990185 MM |
2074 | if (mem_volatile_p) |
2075 | { | |
2076 | if (REGNO (XEXP (base, 0)) == REG_X) | |
2077 | { | |
2078 | *l = 4; | |
2079 | return (AS2 (sbiw,r26,2) CR_TAB | |
2080 | AS2 (ld,%A0,X+) CR_TAB | |
2081 | AS2 (ld,%B0,X) CR_TAB | |
2082 | AS2 (sbiw,r26,1)); | |
2083 | } | |
2084 | else | |
2085 | { | |
2086 | *l = 3; | |
2087 | return (AS2 (sbiw,%r1,2) CR_TAB | |
2088 | AS2 (ld,%A0,%p1) CR_TAB | |
2089 | AS2 (ldd,%B0,%p1+1)); | |
2090 | } | |
2091 | } | |
2092 | ||
6bec29c9 DC |
2093 | *l = 2; |
2094 | return (AS2 (ld,%B0,%1) CR_TAB | |
2095 | AS2 (ld,%A0,%1)); | |
90e7678c | 2096 | } |
5fecfd8d | 2097 | else if (GET_CODE (base) == POST_INC) /* (R++) */ |
90e7678c | 2098 | { |
5fecfd8d | 2099 | if (reg_overlap_mentioned_p (dest, XEXP (base, 0))) |
c725bd79 | 2100 | fatal_insn ("incorrect insn:", insn); |
6bec29c9 DC |
2101 | |
2102 | *l = 2; | |
2103 | return (AS2 (ld,%A0,%1) CR_TAB | |
2104 | AS2 (ld,%B0,%1)); | |
90e7678c | 2105 | } |
5fecfd8d | 2106 | else if (CONSTANT_ADDRESS_P (base)) |
6bec29c9 | 2107 | { |
e6b69d0e | 2108 | if (optimize > 0 && io_address_operand (base, HImode)) |
5fecfd8d MM |
2109 | { |
2110 | *l = 2; | |
2111 | return (AS2 (in,%A0,%A1-0x20) CR_TAB | |
2112 | AS2 (in,%B0,%B1-0x20)); | |
2113 | } | |
6bec29c9 DC |
2114 | *l = 4; |
2115 | return (AS2 (lds,%A0,%A1) CR_TAB | |
2116 | AS2 (lds,%B0,%B1)); | |
2117 | } | |
2118 | ||
c725bd79 | 2119 | fatal_insn ("unknown move insn:",insn); |
90e7678c DC |
2120 | return ""; |
2121 | } | |
2122 | ||
5fecfd8d | 2123 | const char * |
269e3795 | 2124 | out_movsi_r_mr (rtx insn, rtx op[], int *l) |
90e7678c | 2125 | { |
5fecfd8d MM |
2126 | rtx dest = op[0]; |
2127 | rtx src = op[1]; | |
2128 | rtx base = XEXP (src, 0); | |
2129 | int reg_dest = true_regnum (dest); | |
2130 | int reg_base = true_regnum (base); | |
90e7678c | 2131 | int tmp; |
6bec29c9 | 2132 | |
90e7678c | 2133 | if (!l) |
6bec29c9 DC |
2134 | l = &tmp; |
2135 | ||
90e7678c DC |
2136 | if (reg_base > 0) |
2137 | { | |
2138 | if (reg_base == REG_X) /* (R26) */ | |
2139 | { | |
2140 | if (reg_dest == REG_X) | |
dfaf5abf MM |
2141 | /* "ld r26,-X" is undefined */ |
2142 | return *l=7, (AS2 (adiw,r26,3) CR_TAB | |
2143 | AS2 (ld,r29,X) CR_TAB | |
2144 | AS2 (ld,r28,-X) CR_TAB | |
2145 | AS2 (ld,__tmp_reg__,-X) CR_TAB | |
2146 | AS2 (sbiw,r26,1) CR_TAB | |
2147 | AS2 (ld,r26,X) CR_TAB | |
2148 | AS2 (mov,r27,__tmp_reg__)); | |
90e7678c DC |
2149 | else if (reg_dest == REG_X - 2) |
2150 | return *l=5, (AS2 (ld,%A0,X+) CR_TAB | |
2151 | AS2 (ld,%B0,X+) CR_TAB | |
2152 | AS2 (ld,__tmp_reg__,X+) CR_TAB | |
2153 | AS2 (ld,%D0,X) CR_TAB | |
2154 | AS2 (mov,%C0,__tmp_reg__)); | |
5fecfd8d | 2155 | else if (reg_unused_after (insn, base)) |
90e7678c DC |
2156 | return *l=4, (AS2 (ld,%A0,X+) CR_TAB |
2157 | AS2 (ld,%B0,X+) CR_TAB | |
2158 | AS2 (ld,%C0,X+) CR_TAB | |
2159 | AS2 (ld,%D0,X)); | |
2160 | else | |
2161 | return *l=5, (AS2 (ld,%A0,X+) CR_TAB | |
2162 | AS2 (ld,%B0,X+) CR_TAB | |
2163 | AS2 (ld,%C0,X+) CR_TAB | |
2164 | AS2 (ld,%D0,X) CR_TAB | |
2165 | AS2 (sbiw,r26,3)); | |
2166 | } | |
2167 | else | |
2168 | { | |
2169 | if (reg_dest == reg_base) | |
2170 | return *l=5, (AS2 (ldd,%D0,%1+3) CR_TAB | |
2171 | AS2 (ldd,%C0,%1+2) CR_TAB | |
2172 | AS2 (ldd,__tmp_reg__,%1+1) CR_TAB | |
2173 | AS2 (ld,%A0,%1) CR_TAB | |
2174 | AS2 (mov,%B0,__tmp_reg__)); | |
2175 | else if (reg_base == reg_dest + 2) | |
2176 | return *l=5, (AS2 (ld ,%A0,%1) CR_TAB | |
2177 | AS2 (ldd,%B0,%1+1) CR_TAB | |
2178 | AS2 (ldd,__tmp_reg__,%1+2) CR_TAB | |
2179 | AS2 (ldd,%D0,%1+3) CR_TAB | |
2180 | AS2 (mov,%C0,__tmp_reg__)); | |
2181 | else | |
2182 | return *l=4, (AS2 (ld ,%A0,%1) CR_TAB | |
2183 | AS2 (ldd,%B0,%1+1) CR_TAB | |
2184 | AS2 (ldd,%C0,%1+2) CR_TAB | |
2185 | AS2 (ldd,%D0,%1+3)); | |
2186 | } | |
2187 | } | |
5fecfd8d | 2188 | else if (GET_CODE (base) == PLUS) /* (R + i) */ |
90e7678c | 2189 | { |
5fecfd8d | 2190 | int disp = INTVAL (XEXP (base, 1)); |
90e7678c | 2191 | |
5fecfd8d | 2192 | if (disp > MAX_LD_OFFSET (GET_MODE (src))) |
90e7678c | 2193 | { |
5fecfd8d | 2194 | if (REGNO (XEXP (base, 0)) != REG_Y) |
c725bd79 | 2195 | fatal_insn ("incorrect insn:",insn); |
33d5e2dc | 2196 | |
5fecfd8d | 2197 | if (disp <= 63 + MAX_LD_OFFSET (GET_MODE (src))) |
33d5e2dc MM |
2198 | return *l = 6, (AS2 (adiw,r28,%o1-60) CR_TAB |
2199 | AS2 (ldd,%A0,Y+60) CR_TAB | |
2200 | AS2 (ldd,%B0,Y+61) CR_TAB | |
2201 | AS2 (ldd,%C0,Y+62) CR_TAB | |
2202 | AS2 (ldd,%D0,Y+63) CR_TAB | |
2203 | AS2 (sbiw,r28,%o1-60)); | |
2204 | ||
2205 | return *l = 8, (AS2 (subi,r28,lo8(-%o1)) CR_TAB | |
2206 | AS2 (sbci,r29,hi8(-%o1)) CR_TAB | |
2207 | AS2 (ld,%A0,Y) CR_TAB | |
2208 | AS2 (ldd,%B0,Y+1) CR_TAB | |
2209 | AS2 (ldd,%C0,Y+2) CR_TAB | |
2210 | AS2 (ldd,%D0,Y+3) CR_TAB | |
2211 | AS2 (subi,r28,lo8(%o1)) CR_TAB | |
2212 | AS2 (sbci,r29,hi8(%o1))); | |
90e7678c DC |
2213 | } |
2214 | ||
5fecfd8d | 2215 | reg_base = true_regnum (XEXP (base, 0)); |
dfaf5abf MM |
2216 | if (reg_base == REG_X) |
2217 | { | |
2218 | /* R = (X + d) */ | |
2219 | if (reg_dest == REG_X) | |
2220 | { | |
2221 | *l = 7; | |
2222 | /* "ld r26,-X" is undefined */ | |
2223 | return (AS2 (adiw,r26,%o1+3) CR_TAB | |
2224 | AS2 (ld,r29,X) CR_TAB | |
2225 | AS2 (ld,r28,-X) CR_TAB | |
2226 | AS2 (ld,__tmp_reg__,-X) CR_TAB | |
2227 | AS2 (sbiw,r26,1) CR_TAB | |
2228 | AS2 (ld,r26,X) CR_TAB | |
2229 | AS2 (mov,r27,__tmp_reg__)); | |
2230 | } | |
2231 | *l = 6; | |
2232 | if (reg_dest == REG_X - 2) | |
2233 | return (AS2 (adiw,r26,%o1) CR_TAB | |
2234 | AS2 (ld,r24,X+) CR_TAB | |
2235 | AS2 (ld,r25,X+) CR_TAB | |
2236 | AS2 (ld,__tmp_reg__,X+) CR_TAB | |
2237 | AS2 (ld,r27,X) CR_TAB | |
2238 | AS2 (mov,r26,__tmp_reg__)); | |
2239 | ||
2240 | return (AS2 (adiw,r26,%o1) CR_TAB | |
2241 | AS2 (ld,%A0,X+) CR_TAB | |
2242 | AS2 (ld,%B0,X+) CR_TAB | |
2243 | AS2 (ld,%C0,X+) CR_TAB | |
2244 | AS2 (ld,%D0,X) CR_TAB | |
2245 | AS2 (sbiw,r26,%o1+3)); | |
2246 | } | |
90e7678c DC |
2247 | if (reg_dest == reg_base) |
2248 | return *l=5, (AS2 (ldd,%D0,%D1) CR_TAB | |
2249 | AS2 (ldd,%C0,%C1) CR_TAB | |
2250 | AS2 (ldd,__tmp_reg__,%B1) CR_TAB | |
2251 | AS2 (ldd,%A0,%A1) CR_TAB | |
2252 | AS2 (mov,%B0,__tmp_reg__)); | |
2253 | else if (reg_dest == reg_base - 2) | |
2254 | return *l=5, (AS2 (ldd,%A0,%A1) CR_TAB | |
2255 | AS2 (ldd,%B0,%B1) CR_TAB | |
2256 | AS2 (ldd,__tmp_reg__,%C1) CR_TAB | |
2257 | AS2 (ldd,%D0,%D1) CR_TAB | |
2258 | AS2 (mov,%C0,__tmp_reg__)); | |
2259 | return *l=4, (AS2 (ldd,%A0,%A1) CR_TAB | |
2260 | AS2 (ldd,%B0,%B1) CR_TAB | |
2261 | AS2 (ldd,%C0,%C1) CR_TAB | |
2262 | AS2 (ldd,%D0,%D1)); | |
2263 | } | |
5fecfd8d | 2264 | else if (GET_CODE (base) == PRE_DEC) /* (--R) */ |
90e7678c DC |
2265 | return *l=4, (AS2 (ld,%D0,%1) CR_TAB |
2266 | AS2 (ld,%C0,%1) CR_TAB | |
2267 | AS2 (ld,%B0,%1) CR_TAB | |
2268 | AS2 (ld,%A0,%1)); | |
5fecfd8d | 2269 | else if (GET_CODE (base) == POST_INC) /* (R++) */ |
90e7678c DC |
2270 | return *l=4, (AS2 (ld,%A0,%1) CR_TAB |
2271 | AS2 (ld,%B0,%1) CR_TAB | |
2272 | AS2 (ld,%C0,%1) CR_TAB | |
2273 | AS2 (ld,%D0,%1)); | |
5fecfd8d | 2274 | else if (CONSTANT_ADDRESS_P (base)) |
90e7678c DC |
2275 | return *l=8, (AS2 (lds,%A0,%A1) CR_TAB |
2276 | AS2 (lds,%B0,%B1) CR_TAB | |
2277 | AS2 (lds,%C0,%C1) CR_TAB | |
2278 | AS2 (lds,%D0,%D1)); | |
2279 | ||
c725bd79 | 2280 | fatal_insn ("unknown move insn:",insn); |
90e7678c DC |
2281 | return ""; |
2282 | } | |
2283 | ||
5fecfd8d | 2284 | const char * |
269e3795 | 2285 | out_movsi_mr_r (rtx insn, rtx op[], int *l) |
90e7678c | 2286 | { |
5fecfd8d MM |
2287 | rtx dest = op[0]; |
2288 | rtx src = op[1]; | |
2289 | rtx base = XEXP (dest, 0); | |
2290 | int reg_base = true_regnum (base); | |
2291 | int reg_src = true_regnum (src); | |
90e7678c | 2292 | int tmp; |
6bec29c9 | 2293 | |
90e7678c DC |
2294 | if (!l) |
2295 | l = &tmp; | |
6bec29c9 | 2296 | |
5fecfd8d | 2297 | if (CONSTANT_ADDRESS_P (base)) |
90e7678c DC |
2298 | return *l=8,(AS2 (sts,%A0,%A1) CR_TAB |
2299 | AS2 (sts,%B0,%B1) CR_TAB | |
2300 | AS2 (sts,%C0,%C1) CR_TAB | |
2301 | AS2 (sts,%D0,%D1)); | |
2302 | if (reg_base > 0) /* (r) */ | |
2303 | { | |
2304 | if (reg_base == REG_X) /* (R26) */ | |
2305 | { | |
5fecfd8d | 2306 | if (reg_src == REG_X) |
90e7678c | 2307 | { |
dfaf5abf | 2308 | /* "st X+,r26" is undefined */ |
5fecfd8d | 2309 | if (reg_unused_after (insn, base)) |
dfaf5abf MM |
2310 | return *l=6, (AS2 (mov,__tmp_reg__,r27) CR_TAB |
2311 | AS2 (st,X,r26) CR_TAB | |
2312 | AS2 (adiw,r26,1) CR_TAB | |
2313 | AS2 (st,X+,__tmp_reg__) CR_TAB | |
2314 | AS2 (st,X+,r28) CR_TAB | |
2315 | AS2 (st,X,r29)); | |
90e7678c | 2316 | else |
dfaf5abf MM |
2317 | return *l=7, (AS2 (mov,__tmp_reg__,r27) CR_TAB |
2318 | AS2 (st,X,r26) CR_TAB | |
2319 | AS2 (adiw,r26,1) CR_TAB | |
2320 | AS2 (st,X+,__tmp_reg__) CR_TAB | |
2321 | AS2 (st,X+,r28) CR_TAB | |
2322 | AS2 (st,X,r29) CR_TAB | |
2323 | AS2 (sbiw,r26,3)); | |
90e7678c | 2324 | } |
5fecfd8d | 2325 | else if (reg_base == reg_src + 2) |
90e7678c | 2326 | { |
5fecfd8d | 2327 | if (reg_unused_after (insn, base)) |
90e7678c DC |
2328 | return *l=7, (AS2 (mov,__zero_reg__,%C1) CR_TAB |
2329 | AS2 (mov,__tmp_reg__,%D1) CR_TAB | |
2330 | AS2 (st,%0+,%A1) CR_TAB | |
2331 | AS2 (st,%0+,%B1) CR_TAB | |
2332 | AS2 (st,%0+,__zero_reg__) CR_TAB | |
2333 | AS2 (st,%0,__tmp_reg__) CR_TAB | |
2334 | AS1 (clr,__zero_reg__)); | |
2335 | else | |
2336 | return *l=8, (AS2 (mov,__zero_reg__,%C1) CR_TAB | |
2337 | AS2 (mov,__tmp_reg__,%D1) CR_TAB | |
2338 | AS2 (st,%0+,%A1) CR_TAB | |
2339 | AS2 (st,%0+,%B1) CR_TAB | |
2340 | AS2 (st,%0+,__zero_reg__) CR_TAB | |
2341 | AS2 (st,%0,__tmp_reg__) CR_TAB | |
2342 | AS1 (clr,__zero_reg__) CR_TAB | |
2343 | AS2 (sbiw,r26,3)); | |
2344 | } | |
2345 | return *l=5, (AS2 (st,%0+,%A1) CR_TAB | |
2346 | AS2 (st,%0+,%B1) CR_TAB | |
2347 | AS2 (st,%0+,%C1) CR_TAB | |
2348 | AS2 (st,%0,%D1) CR_TAB | |
2349 | AS2 (sbiw,r26,3)); | |
2350 | } | |
2351 | else | |
2352 | return *l=4, (AS2 (st,%0,%A1) CR_TAB | |
2353 | AS2 (std,%0+1,%B1) CR_TAB | |
2354 | AS2 (std,%0+2,%C1) CR_TAB | |
2355 | AS2 (std,%0+3,%D1)); | |
2356 | } | |
5fecfd8d | 2357 | else if (GET_CODE (base) == PLUS) /* (R + i) */ |
90e7678c | 2358 | { |
5fecfd8d | 2359 | int disp = INTVAL (XEXP (base, 1)); |
dfaf5abf | 2360 | reg_base = REGNO (XEXP (base, 0)); |
5fecfd8d | 2361 | if (disp > MAX_LD_OFFSET (GET_MODE (dest))) |
90e7678c | 2362 | { |
dfaf5abf | 2363 | if (reg_base != REG_Y) |
c725bd79 | 2364 | fatal_insn ("incorrect insn:",insn); |
33d5e2dc | 2365 | |
5fecfd8d | 2366 | if (disp <= 63 + MAX_LD_OFFSET (GET_MODE (dest))) |
33d5e2dc MM |
2367 | return *l = 6, (AS2 (adiw,r28,%o0-60) CR_TAB |
2368 | AS2 (std,Y+60,%A1) CR_TAB | |
2369 | AS2 (std,Y+61,%B1) CR_TAB | |
2370 | AS2 (std,Y+62,%C1) CR_TAB | |
2371 | AS2 (std,Y+63,%D1) CR_TAB | |
2372 | AS2 (sbiw,r28,%o0-60)); | |
2373 | ||
2374 | return *l = 8, (AS2 (subi,r28,lo8(-%o0)) CR_TAB | |
2375 | AS2 (sbci,r29,hi8(-%o0)) CR_TAB | |
2376 | AS2 (st,Y,%A1) CR_TAB | |
2377 | AS2 (std,Y+1,%B1) CR_TAB | |
2378 | AS2 (std,Y+2,%C1) CR_TAB | |
2379 | AS2 (std,Y+3,%D1) CR_TAB | |
2380 | AS2 (subi,r28,lo8(%o0)) CR_TAB | |
2381 | AS2 (sbci,r29,hi8(%o0))); | |
90e7678c | 2382 | } |
dfaf5abf MM |
2383 | if (reg_base == REG_X) |
2384 | { | |
2385 | /* (X + d) = R */ | |
2386 | if (reg_src == REG_X) | |
2387 | { | |
2388 | *l = 9; | |
2389 | return (AS2 (mov,__tmp_reg__,r26) CR_TAB | |
2390 | AS2 (mov,__zero_reg__,r27) CR_TAB | |
2391 | AS2 (adiw,r26,%o0) CR_TAB | |
2392 | AS2 (st,X+,__tmp_reg__) CR_TAB | |
2393 | AS2 (st,X+,__zero_reg__) CR_TAB | |
2394 | AS2 (st,X+,r28) CR_TAB | |
2395 | AS2 (st,X,r29) CR_TAB | |
2396 | AS1 (clr,__zero_reg__) CR_TAB | |
2397 | AS2 (sbiw,r26,%o0+3)); | |
2398 | } | |
2399 | else if (reg_src == REG_X - 2) | |
2400 | { | |
2401 | *l = 9; | |
2402 | return (AS2 (mov,__tmp_reg__,r26) CR_TAB | |
2403 | AS2 (mov,__zero_reg__,r27) CR_TAB | |
2404 | AS2 (adiw,r26,%o0) CR_TAB | |
2405 | AS2 (st,X+,r24) CR_TAB | |
2406 | AS2 (st,X+,r25) CR_TAB | |
2407 | AS2 (st,X+,__tmp_reg__) CR_TAB | |
2408 | AS2 (st,X,__zero_reg__) CR_TAB | |
2409 | AS1 (clr,__zero_reg__) CR_TAB | |
2410 | AS2 (sbiw,r26,%o0+3)); | |
2411 | } | |
2412 | *l = 6; | |
2413 | return (AS2 (adiw,r26,%o0) CR_TAB | |
2414 | AS2 (st,X+,%A1) CR_TAB | |
2415 | AS2 (st,X+,%B1) CR_TAB | |
2416 | AS2 (st,X+,%C1) CR_TAB | |
2417 | AS2 (st,X,%D1) CR_TAB | |
2418 | AS2 (sbiw,r26,%o0+3)); | |
2419 | } | |
90e7678c DC |
2420 | return *l=4, (AS2 (std,%A0,%A1) CR_TAB |
2421 | AS2 (std,%B0,%B1) CR_TAB | |
2422 | AS2 (std,%C0,%C1) CR_TAB | |
2423 | AS2 (std,%D0,%D1)); | |
2424 | } | |
5fecfd8d | 2425 | else if (GET_CODE (base) == PRE_DEC) /* (--R) */ |
90e7678c DC |
2426 | return *l=4, (AS2 (st,%0,%D1) CR_TAB |
2427 | AS2 (st,%0,%C1) CR_TAB | |
2428 | AS2 (st,%0,%B1) CR_TAB | |
2429 | AS2 (st,%0,%A1)); | |
5fecfd8d | 2430 | else if (GET_CODE (base) == POST_INC) /* (R++) */ |
90e7678c DC |
2431 | return *l=4, (AS2 (st,%0,%A1) CR_TAB |
2432 | AS2 (st,%0,%B1) CR_TAB | |
2433 | AS2 (st,%0,%C1) CR_TAB | |
2434 | AS2 (st,%0,%D1)); | |
c725bd79 | 2435 | fatal_insn ("unknown move insn:",insn); |
90e7678c DC |
2436 | return ""; |
2437 | } | |
2438 | ||
5fecfd8d | 2439 | const char * |
269e3795 | 2440 | output_movsisf(rtx insn, rtx operands[], int *l) |
90e7678c | 2441 | { |
6bec29c9 DC |
2442 | int dummy; |
2443 | rtx dest = operands[0]; | |
2444 | rtx src = operands[1]; | |
2445 | int *real_l = l; | |
2446 | ||
2447 | if (!l) | |
2448 | l = &dummy; | |
2449 | ||
2450 | if (register_operand (dest, VOIDmode)) | |
90e7678c | 2451 | { |
6bec29c9 | 2452 | if (register_operand (src, VOIDmode)) /* mov r,r */ |
c4984bad | 2453 | { |
6bec29c9 DC |
2454 | if (true_regnum (dest) > true_regnum (src)) |
2455 | { | |
4301ec4f | 2456 | if (AVR_HAVE_MOVW) |
6bec29c9 DC |
2457 | { |
2458 | *l = 2; | |
2459 | return (AS2 (movw,%C0,%C1) CR_TAB | |
2460 | AS2 (movw,%A0,%A1)); | |
2461 | } | |
2462 | *l = 4; | |
2463 | return (AS2 (mov,%D0,%D1) CR_TAB | |
2464 | AS2 (mov,%C0,%C1) CR_TAB | |
2465 | AS2 (mov,%B0,%B1) CR_TAB | |
2466 | AS2 (mov,%A0,%A1)); | |
2467 | } | |
c4984bad | 2468 | else |
6bec29c9 | 2469 | { |
4301ec4f | 2470 | if (AVR_HAVE_MOVW) |
6bec29c9 DC |
2471 | { |
2472 | *l = 2; | |
2473 | return (AS2 (movw,%A0,%A1) CR_TAB | |
2474 | AS2 (movw,%C0,%C1)); | |
2475 | } | |
2476 | *l = 4; | |
2477 | return (AS2 (mov,%A0,%A1) CR_TAB | |
2478 | AS2 (mov,%B0,%B1) CR_TAB | |
2479 | AS2 (mov,%C0,%C1) CR_TAB | |
2480 | AS2 (mov,%D0,%D1)); | |
2481 | } | |
c4984bad | 2482 | } |
6bec29c9 | 2483 | else if (CONSTANT_P (src)) |
c4984bad | 2484 | { |
6bec29c9 DC |
2485 | if (test_hard_reg_class (LD_REGS, dest)) /* ldi d,i */ |
2486 | { | |
2487 | *l = 4; | |
2488 | return (AS2 (ldi,%A0,lo8(%1)) CR_TAB | |
2489 | AS2 (ldi,%B0,hi8(%1)) CR_TAB | |
2490 | AS2 (ldi,%C0,hlo8(%1)) CR_TAB | |
2491 | AS2 (ldi,%D0,hhi8(%1))); | |
2492 | } | |
2493 | ||
2494 | if (GET_CODE (src) == CONST_INT) | |
2495 | { | |
83182544 | 2496 | const char *const clr_op0 = |
4301ec4f | 2497 | AVR_HAVE_MOVW ? (AS1 (clr,%A0) CR_TAB |
afee2a52 MM |
2498 | AS1 (clr,%B0) CR_TAB |
2499 | AS2 (movw,%C0,%A0)) | |
2500 | : (AS1 (clr,%A0) CR_TAB | |
2501 | AS1 (clr,%B0) CR_TAB | |
2502 | AS1 (clr,%C0) CR_TAB | |
2503 | AS1 (clr,%D0)); | |
2504 | ||
6bec29c9 DC |
2505 | if (src == const0_rtx) /* mov r,L */ |
2506 | { | |
4301ec4f | 2507 | *l = AVR_HAVE_MOVW ? 3 : 4; |
afee2a52 | 2508 | return clr_op0; |
6bec29c9 DC |
2509 | } |
2510 | else if (src == const1_rtx) | |
2511 | { | |
afee2a52 MM |
2512 | if (!real_l) |
2513 | output_asm_insn (clr_op0, operands); | |
4301ec4f | 2514 | *l = AVR_HAVE_MOVW ? 4 : 5; |
afee2a52 | 2515 | return AS1 (inc,%A0); |
6bec29c9 DC |
2516 | } |
2517 | else if (src == constm1_rtx) | |
2518 | { | |
2519 | /* Immediate constants -1 to any register */ | |
4301ec4f | 2520 | if (AVR_HAVE_MOVW) |
6bec29c9 DC |
2521 | { |
2522 | *l = 4; | |
2523 | return (AS1 (clr,%A0) CR_TAB | |
2524 | AS1 (dec,%A0) CR_TAB | |
2525 | AS2 (mov,%B0,%A0) CR_TAB | |
2526 | AS2 (movw,%C0,%A0)); | |
2527 | } | |
2528 | *l = 5; | |
2529 | return (AS1 (clr,%A0) CR_TAB | |
2530 | AS1 (dec,%A0) CR_TAB | |
2531 | AS2 (mov,%B0,%A0) CR_TAB | |
2532 | AS2 (mov,%C0,%A0) CR_TAB | |
2533 | AS2 (mov,%D0,%A0)); | |
2534 | } | |
afee2a52 MM |
2535 | else |
2536 | { | |
2537 | int bit_nr = exact_log2 (INTVAL (src)); | |
2538 | ||
2539 | if (bit_nr >= 0) | |
2540 | { | |
4301ec4f | 2541 | *l = AVR_HAVE_MOVW ? 5 : 6; |
6001794d | 2542 | if (!real_l) |
afee2a52 | 2543 | { |
6001794d KH |
2544 | output_asm_insn (clr_op0, operands); |
2545 | output_asm_insn ("set", operands); | |
afee2a52 MM |
2546 | } |
2547 | if (!real_l) | |
2548 | avr_output_bld (operands, bit_nr); | |
2549 | ||
2550 | return ""; | |
2551 | } | |
2552 | } | |
6bec29c9 DC |
2553 | } |
2554 | ||
2555 | /* Last resort, better than loading from memory. */ | |
2556 | *l = 10; | |
2557 | return (AS2 (mov,__tmp_reg__,r31) CR_TAB | |
2558 | AS2 (ldi,r31,lo8(%1)) CR_TAB | |
2559 | AS2 (mov,%A0,r31) CR_TAB | |
2560 | AS2 (ldi,r31,hi8(%1)) CR_TAB | |
2561 | AS2 (mov,%B0,r31) CR_TAB | |
2562 | AS2 (ldi,r31,hlo8(%1)) CR_TAB | |
2563 | AS2 (mov,%C0,r31) CR_TAB | |
2564 | AS2 (ldi,r31,hhi8(%1)) CR_TAB | |
2565 | AS2 (mov,%D0,r31) CR_TAB | |
2566 | AS2 (mov,r31,__tmp_reg__)); | |
2567 | } | |
2568 | else if (GET_CODE (src) == MEM) | |
2569 | return out_movsi_r_mr (insn, operands, real_l); /* mov r,m */ | |
2570 | } | |
2571 | else if (GET_CODE (dest) == MEM) | |
2572 | { | |
5fecfd8d MM |
2573 | const char *template; |
2574 | ||
2575 | if (src == const0_rtx) | |
6bec29c9 | 2576 | operands[1] = zero_reg_rtx; |
5fecfd8d | 2577 | |
6bec29c9 DC |
2578 | template = out_movsi_mr_r (insn, operands, real_l); |
2579 | ||
2580 | if (!real_l) | |
2581 | output_asm_insn (template, operands); | |
5fecfd8d MM |
2582 | |
2583 | operands[1] = src; | |
6bec29c9 | 2584 | return ""; |
90e7678c | 2585 | } |
c725bd79 | 2586 | fatal_insn ("invalid insn:", insn); |
90e7678c DC |
2587 | return ""; |
2588 | } | |
2589 | ||
5fecfd8d | 2590 | const char * |
269e3795 | 2591 | out_movqi_mr_r (rtx insn, rtx op[], int *l) |
90e7678c | 2592 | { |
5fecfd8d MM |
2593 | rtx dest = op[0]; |
2594 | rtx src = op[1]; | |
2595 | rtx x = XEXP (dest, 0); | |
6bec29c9 | 2596 | int dummy; |
90e7678c | 2597 | |
6bec29c9 DC |
2598 | if (!l) |
2599 | l = &dummy; | |
6bec29c9 DC |
2600 | |
2601 | if (CONSTANT_ADDRESS_P (x)) | |
90e7678c | 2602 | { |
4fc2b4ff AH |
2603 | if (CONST_INT_P (x) && INTVAL (x) == SREG_ADDR) |
2604 | { | |
2605 | *l = 1; | |
2606 | return AS2 (out,__SREG__,%1); | |
2607 | } | |
e6b69d0e | 2608 | if (optimize > 0 && io_address_operand (x, QImode)) |
6bec29c9 DC |
2609 | { |
2610 | *l = 1; | |
2611 | return AS2 (out,%0-0x20,%1); | |
2612 | } | |
2613 | *l = 2; | |
2614 | return AS2 (sts,%0,%1); | |
2615 | } | |
2616 | /* memory access by reg+disp */ | |
2617 | else if (GET_CODE (x) == PLUS | |
2618 | && REG_P (XEXP (x,0)) | |
2619 | && GET_CODE (XEXP (x,1)) == CONST_INT) | |
2620 | { | |
5fecfd8d | 2621 | if ((INTVAL (XEXP (x,1)) - GET_MODE_SIZE (GET_MODE (dest))) >= 63) |
90e7678c | 2622 | { |
6bec29c9 DC |
2623 | int disp = INTVAL (XEXP (x,1)); |
2624 | if (REGNO (XEXP (x,0)) != REG_Y) | |
c725bd79 | 2625 | fatal_insn ("incorrect insn:",insn); |
33d5e2dc | 2626 | |
5fecfd8d | 2627 | if (disp <= 63 + MAX_LD_OFFSET (GET_MODE (dest))) |
33d5e2dc MM |
2628 | return *l = 3, (AS2 (adiw,r28,%o0-63) CR_TAB |
2629 | AS2 (std,Y+63,%1) CR_TAB | |
2630 | AS2 (sbiw,r28,%o0-63)); | |
2631 | ||
2632 | return *l = 5, (AS2 (subi,r28,lo8(-%o0)) CR_TAB | |
2633 | AS2 (sbci,r29,hi8(-%o0)) CR_TAB | |
2634 | AS2 (st,Y,%1) CR_TAB | |
2635 | AS2 (subi,r28,lo8(%o0)) CR_TAB | |
2636 | AS2 (sbci,r29,hi8(%o0))); | |
6bec29c9 DC |
2637 | } |
2638 | else if (REGNO (XEXP (x,0)) == REG_X) | |
2639 | { | |
5fecfd8d | 2640 | if (reg_overlap_mentioned_p (src, XEXP (x, 0))) |
6bec29c9 DC |
2641 | { |
2642 | if (reg_unused_after (insn, XEXP (x,0))) | |
33d5e2dc MM |
2643 | return *l = 3, (AS2 (mov,__tmp_reg__,%1) CR_TAB |
2644 | AS2 (adiw,r26,%o0) CR_TAB | |
2645 | AS2 (st,X,__tmp_reg__)); | |
2646 | ||
2647 | return *l = 4, (AS2 (mov,__tmp_reg__,%1) CR_TAB | |
2648 | AS2 (adiw,r26,%o0) CR_TAB | |
2649 | AS2 (st,X,__tmp_reg__) CR_TAB | |
2650 | AS2 (sbiw,r26,%o0)); | |
90e7678c | 2651 | } |
6bec29c9 | 2652 | else |
90e7678c | 2653 | { |
6bec29c9 | 2654 | if (reg_unused_after (insn, XEXP (x,0))) |
33d5e2dc MM |
2655 | return *l = 2, (AS2 (adiw,r26,%o0) CR_TAB |
2656 | AS2 (st,X,%1)); | |
2657 | ||
2658 | return *l = 3, (AS2 (adiw,r26,%o0) CR_TAB | |
2659 | AS2 (st,X,%1) CR_TAB | |
2660 | AS2 (sbiw,r26,%o0)); | |
90e7678c DC |
2661 | } |
2662 | } | |
6bec29c9 DC |
2663 | *l = 1; |
2664 | return AS2 (std,%0,%1); | |
90e7678c | 2665 | } |
6bec29c9 DC |
2666 | *l = 1; |
2667 | return AS2 (st,%0,%1); | |
90e7678c DC |
2668 | } |
2669 | ||
5fecfd8d | 2670 | const char * |
269e3795 | 2671 | out_movhi_mr_r (rtx insn, rtx op[], int *l) |
90e7678c | 2672 | { |
5fecfd8d MM |
2673 | rtx dest = op[0]; |
2674 | rtx src = op[1]; | |
2675 | rtx base = XEXP (dest, 0); | |
2676 | int reg_base = true_regnum (base); | |
2677 | int reg_src = true_regnum (src); | |
a6990185 MM |
2678 | /* "volatile" forces writing high byte first, even if less efficient, |
2679 | for correct operation with 16-bit I/O registers. */ | |
2680 | int mem_volatile_p = MEM_VOLATILE_P (dest); | |
90e7678c | 2681 | int tmp; |
a6990185 | 2682 | |
90e7678c DC |
2683 | if (!l) |
2684 | l = &tmp; | |
5fecfd8d MM |
2685 | if (CONSTANT_ADDRESS_P (base)) |
2686 | { | |
e6b69d0e | 2687 | if (optimize > 0 && io_address_operand (base, HImode)) |
5fecfd8d MM |
2688 | { |
2689 | *l = 2; | |
2690 | return (AS2 (out,%B0-0x20,%B1) CR_TAB | |
2691 | AS2 (out,%A0-0x20,%A1)); | |
2692 | } | |
2693 | return *l = 4, (AS2 (sts,%B0,%B1) CR_TAB | |
2694 | AS2 (sts,%A0,%A1)); | |
2695 | } | |
90e7678c DC |
2696 | if (reg_base > 0) |
2697 | { | |
2698 | if (reg_base == REG_X) | |
2699 | { | |
5fecfd8d | 2700 | if (reg_src == REG_X) |
90e7678c | 2701 | { |
a6990185 MM |
2702 | /* "st X+,r26" and "st -X,r26" are undefined. */ |
2703 | if (!mem_volatile_p && reg_unused_after (insn, src)) | |
dfaf5abf MM |
2704 | return *l=4, (AS2 (mov,__tmp_reg__,r27) CR_TAB |
2705 | AS2 (st,X,r26) CR_TAB | |
2706 | AS2 (adiw,r26,1) CR_TAB | |
2707 | AS2 (st,X,__tmp_reg__)); | |
90e7678c | 2708 | else |
dfaf5abf | 2709 | return *l=5, (AS2 (mov,__tmp_reg__,r27) CR_TAB |
dfaf5abf MM |
2710 | AS2 (adiw,r26,1) CR_TAB |
2711 | AS2 (st,X,__tmp_reg__) CR_TAB | |
a6990185 MM |
2712 | AS2 (sbiw,r26,1) CR_TAB |
2713 | AS2 (st,X,r26)); | |
90e7678c DC |
2714 | } |
2715 | else | |
2716 | { | |
a6990185 | 2717 | if (!mem_volatile_p && reg_unused_after (insn, base)) |
90e7678c DC |
2718 | return *l=2, (AS2 (st,X+,%A1) CR_TAB |
2719 | AS2 (st,X,%B1)); | |
2720 | else | |
a6990185 MM |
2721 | return *l=3, (AS2 (adiw,r26,1) CR_TAB |
2722 | AS2 (st,X,%B1) CR_TAB | |
2723 | AS2 (st,-X,%A1)); | |
90e7678c DC |
2724 | } |
2725 | } | |
2726 | else | |
a6990185 MM |
2727 | return *l=2, (AS2 (std,%0+1,%B1) CR_TAB |
2728 | AS2 (st,%0,%A1)); | |
90e7678c | 2729 | } |
5fecfd8d | 2730 | else if (GET_CODE (base) == PLUS) |
90e7678c | 2731 | { |
5fecfd8d | 2732 | int disp = INTVAL (XEXP (base, 1)); |
dfaf5abf | 2733 | reg_base = REGNO (XEXP (base, 0)); |
5fecfd8d | 2734 | if (disp > MAX_LD_OFFSET (GET_MODE (dest))) |
90e7678c | 2735 | { |
dfaf5abf | 2736 | if (reg_base != REG_Y) |
c725bd79 | 2737 | fatal_insn ("incorrect insn:",insn); |
33d5e2dc | 2738 | |
5fecfd8d | 2739 | if (disp <= 63 + MAX_LD_OFFSET (GET_MODE (dest))) |
33d5e2dc | 2740 | return *l = 4, (AS2 (adiw,r28,%o0-62) CR_TAB |
33d5e2dc | 2741 | AS2 (std,Y+63,%B1) CR_TAB |
a6990185 | 2742 | AS2 (std,Y+62,%A1) CR_TAB |
33d5e2dc MM |
2743 | AS2 (sbiw,r28,%o0-62)); |
2744 | ||
2745 | return *l = 6, (AS2 (subi,r28,lo8(-%o0)) CR_TAB | |
2746 | AS2 (sbci,r29,hi8(-%o0)) CR_TAB | |
33d5e2dc | 2747 | AS2 (std,Y+1,%B1) CR_TAB |
a6990185 | 2748 | AS2 (st,Y,%A1) CR_TAB |
33d5e2dc MM |
2749 | AS2 (subi,r28,lo8(%o0)) CR_TAB |
2750 | AS2 (sbci,r29,hi8(%o0))); | |
90e7678c | 2751 | } |
dfaf5abf MM |
2752 | if (reg_base == REG_X) |
2753 | { | |
2754 | /* (X + d) = R */ | |
2755 | if (reg_src == REG_X) | |
a6990185 | 2756 | { |
dfaf5abf MM |
2757 | *l = 7; |
2758 | return (AS2 (mov,__tmp_reg__,r26) CR_TAB | |
2759 | AS2 (mov,__zero_reg__,r27) CR_TAB | |
a6990185 | 2760 | AS2 (adiw,r26,%o0+1) CR_TAB |
dfaf5abf | 2761 | AS2 (st,X,__zero_reg__) CR_TAB |
a6990185 | 2762 | AS2 (st,-X,__tmp_reg__) CR_TAB |
dfaf5abf | 2763 | AS1 (clr,__zero_reg__) CR_TAB |
a6990185 | 2764 | AS2 (sbiw,r26,%o0)); |
dfaf5abf MM |
2765 | } |
2766 | *l = 4; | |
a6990185 MM |
2767 | return (AS2 (adiw,r26,%o0+1) CR_TAB |
2768 | AS2 (st,X,%B1) CR_TAB | |
2769 | AS2 (st,-X,%A1) CR_TAB | |
2770 | AS2 (sbiw,r26,%o0)); | |
dfaf5abf | 2771 | } |
a6990185 MM |
2772 | return *l=2, (AS2 (std,%B0,%B1) CR_TAB |
2773 | AS2 (std,%A0,%A1)); | |
6bec29c9 | 2774 | } |
5fecfd8d | 2775 | else if (GET_CODE (base) == PRE_DEC) /* (--R) */ |
90e7678c DC |
2776 | return *l=2, (AS2 (st,%0,%B1) CR_TAB |
2777 | AS2 (st,%0,%A1)); | |
5fecfd8d | 2778 | else if (GET_CODE (base) == POST_INC) /* (R++) */ |
a6990185 MM |
2779 | { |
2780 | if (mem_volatile_p) | |
2781 | { | |
2782 | if (REGNO (XEXP (base, 0)) == REG_X) | |
2783 | { | |
2784 | *l = 4; | |
2785 | return (AS2 (adiw,r26,1) CR_TAB | |
2786 | AS2 (st,X,%B1) CR_TAB | |
2787 | AS2 (st,-X,%A1) CR_TAB | |
2788 | AS2 (adiw,r26,2)); | |
2789 | } | |
2790 | else | |
2791 | { | |
2792 | *l = 3; | |
2793 | return (AS2 (std,%p0+1,%B1) CR_TAB | |
2794 | AS2 (st,%p0,%A1) CR_TAB | |
2795 | AS2 (adiw,%r0,2)); | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | *l = 2; | |
2800 | return (AS2 (st,%0,%A1) CR_TAB | |
2801 | AS2 (st,%0,%B1)); | |
2802 | } | |
c725bd79 | 2803 | fatal_insn ("unknown move insn:",insn); |
90e7678c DC |
2804 | return ""; |
2805 | } | |
2806 | ||
2c338472 | 2807 | /* Return 1 if frame pointer for current function required. */ |
90e7678c DC |
2808 | |
2809 | int | |
269e3795 | 2810 | frame_pointer_required_p (void) |
90e7678c | 2811 | { |
e3b5732b | 2812 | return (cfun->calls_alloca |
38173d38 | 2813 | || crtl->args.info.nregs == 0 |
90e7678c DC |
2814 | || get_frame_size () > 0); |
2815 | } | |
2816 | ||
89741abb | 2817 | /* Returns the condition of compare insn INSN, or UNKNOWN. */ |
90e7678c | 2818 | |
89741abb | 2819 | static RTX_CODE |
269e3795 | 2820 | compare_condition (rtx insn) |
90e7678c DC |
2821 | { |
2822 | rtx next = next_real_insn (insn); | |
2823 | RTX_CODE cond = UNKNOWN; | |
89741abb | 2824 | if (next && GET_CODE (next) == JUMP_INSN) |
90e7678c DC |
2825 | { |
2826 | rtx pat = PATTERN (next); | |
2827 | rtx src = SET_SRC (pat); | |
89741abb | 2828 | rtx t = XEXP (src, 0); |
90e7678c DC |
2829 | cond = GET_CODE (t); |
2830 | } | |
89741abb MM |
2831 | return cond; |
2832 | } | |
2833 | ||
2834 | /* Returns nonzero if INSN is a tst insn that only tests the sign. */ | |
2835 | ||
2836 | static int | |
269e3795 | 2837 | compare_sign_p (rtx insn) |
89741abb MM |
2838 | { |
2839 | RTX_CODE cond = compare_condition (insn); | |
2840 | return (cond == GE || cond == LT); | |
2841 | } | |
2842 | ||
2843 | /* Returns nonzero if the next insn is a JUMP_INSN with a condition | |
2844 | that needs to be swapped (GT, GTU, LE, LEU). */ | |
2845 | ||
2846 | int | |
269e3795 | 2847 | compare_diff_p (rtx insn) |
89741abb MM |
2848 | { |
2849 | RTX_CODE cond = compare_condition (insn); | |
90e7678c DC |
2850 | return (cond == GT || cond == GTU || cond == LE || cond == LEU) ? cond : 0; |
2851 | } | |
2852 | ||
89741abb | 2853 | /* Returns nonzero if INSN is a compare insn with the EQ or NE condition. */ |
90e7678c DC |
2854 | |
2855 | int | |
269e3795 | 2856 | compare_eq_p (rtx insn) |
90e7678c | 2857 | { |
89741abb | 2858 | RTX_CODE cond = compare_condition (insn); |
90e7678c DC |
2859 | return (cond == EQ || cond == NE); |
2860 | } | |
2861 | ||
2862 | ||
2c338472 | 2863 | /* Output test instruction for HImode. */ |
90e7678c | 2864 | |
5fecfd8d | 2865 | const char * |
269e3795 | 2866 | out_tsthi (rtx insn, int *l) |
90e7678c | 2867 | { |
89741abb | 2868 | if (compare_sign_p (insn)) |
90e7678c DC |
2869 | { |
2870 | if (l) *l = 1; | |
2871 | return AS1 (tst,%B0); | |
2872 | } | |
89741abb MM |
2873 | if (reg_unused_after (insn, SET_SRC (PATTERN (insn))) |
2874 | && compare_eq_p (insn)) | |
90e7678c | 2875 | { |
2c338472 | 2876 | /* Faster than sbiw if we can clobber the operand. */ |
90e7678c | 2877 | if (l) *l = 1; |
5fecfd8d | 2878 | return AS2 (or,%A0,%B0); |
90e7678c | 2879 | } |
5fecfd8d | 2880 | if (test_hard_reg_class (ADDW_REGS, SET_SRC (PATTERN (insn)))) |
90e7678c DC |
2881 | { |
2882 | if (l) *l = 1; | |
5fecfd8d | 2883 | return AS2 (sbiw,%0,0); |
90e7678c DC |
2884 | } |
2885 | if (l) *l = 2; | |
2886 | return (AS2 (cp,%A0,__zero_reg__) CR_TAB | |
2887 | AS2 (cpc,%B0,__zero_reg__)); | |
2888 | } | |
2889 | ||
2890 | ||
2c338472 | 2891 | /* Output test instruction for SImode. */ |
90e7678c | 2892 | |
5fecfd8d | 2893 | const char * |
269e3795 | 2894 | out_tstsi (rtx insn, int *l) |
90e7678c | 2895 | { |
89741abb | 2896 | if (compare_sign_p (insn)) |
90e7678c DC |
2897 | { |
2898 | if (l) *l = 1; | |
2899 | return AS1 (tst,%D0); | |
2900 | } | |
c4984bad | 2901 | if (test_hard_reg_class (ADDW_REGS, SET_SRC (PATTERN (insn)))) |
90e7678c DC |
2902 | { |
2903 | if (l) *l = 3; | |
2904 | return (AS2 (sbiw,%A0,0) CR_TAB | |
2905 | AS2 (cpc,%C0,__zero_reg__) CR_TAB | |
2906 | AS2 (cpc,%D0,__zero_reg__)); | |
2907 | } | |
2908 | if (l) *l = 4; | |
2909 | return (AS2 (cp,%A0,__zero_reg__) CR_TAB | |
2910 | AS2 (cpc,%B0,__zero_reg__) CR_TAB | |
2911 | AS2 (cpc,%C0,__zero_reg__) CR_TAB | |
2912 | AS2 (cpc,%D0,__zero_reg__)); | |
2913 | } | |
2914 | ||
2915 | ||
afee2a52 MM |
2916 | /* Generate asm equivalent for various shifts. |
2917 | Shift count is a CONST_INT, MEM or REG. | |
2918 | This only handles cases that are not already | |
2919 | carefully hand-optimized in ?sh??i3_out. */ | |
90e7678c DC |
2920 | |
2921 | void | |
269e3795 SB |
2922 | out_shift_with_cnt (const char *template, rtx insn, rtx operands[], |
2923 | int *len, int t_len) | |
90e7678c DC |
2924 | { |
2925 | rtx op[10]; | |
afee2a52 | 2926 | char str[500]; |
0db7ad3a | 2927 | int second_label = 1; |
afee2a52 MM |
2928 | int saved_in_tmp = 0; |
2929 | int use_zero_reg = 0; | |
2930 | ||
90e7678c DC |
2931 | op[0] = operands[0]; |
2932 | op[1] = operands[1]; | |
2933 | op[2] = operands[2]; | |
2934 | op[3] = operands[3]; | |
2935 | str[0] = 0; | |
afee2a52 MM |
2936 | |
2937 | if (len) | |
2938 | *len = 1; | |
2939 | ||
2940 | if (GET_CODE (operands[2]) == CONST_INT) | |
90e7678c | 2941 | { |
afee2a52 MM |
2942 | int scratch = (GET_CODE (PATTERN (insn)) == PARALLEL); |
2943 | int count = INTVAL (operands[2]); | |
2944 | int max_len = 10; /* If larger than this, always use a loop. */ | |
2945 | ||
a3cf5992 MM |
2946 | if (count <= 0) |
2947 | { | |
2948 | if (len) | |
2949 | *len = 0; | |
2950 | return; | |
2951 | } | |
2952 | ||
afee2a52 MM |
2953 | if (count < 8 && !scratch) |
2954 | use_zero_reg = 1; | |
2955 | ||
2956 | if (optimize_size) | |
2957 | max_len = t_len + (scratch ? 3 : (use_zero_reg ? 4 : 5)); | |
2958 | ||
2959 | if (t_len * count <= max_len) | |
2960 | { | |
2961 | /* Output shifts inline with no loop - faster. */ | |
2962 | if (len) | |
2963 | *len = t_len * count; | |
2964 | else | |
2965 | { | |
2966 | while (count-- > 0) | |
2967 | output_asm_insn (template, op); | |
2968 | } | |
2969 | ||
2970 | return; | |
2971 | } | |
2972 | ||
2973 | if (scratch) | |
2974 | { | |
2975 | if (!len) | |
2976 | strcat (str, AS2 (ldi,%3,%2)); | |
2977 | } | |
2978 | else if (use_zero_reg) | |
2979 | { | |
2980 | /* Hack to save one word: use __zero_reg__ as loop counter. | |
2981 | Set one bit, then shift in a loop until it is 0 again. */ | |
2982 | ||
2983 | op[3] = zero_reg_rtx; | |
2984 | if (len) | |
2985 | *len = 2; | |
2986 | else | |
2987 | strcat (str, ("set" CR_TAB | |
2988 | AS2 (bld,%3,%2-1))); | |
2989 | } | |
90e7678c | 2990 | else |
afee2a52 MM |
2991 | { |
2992 | /* No scratch register available, use one from LD_REGS (saved in | |
2993 | __tmp_reg__) that doesn't overlap with registers to shift. */ | |
2994 | ||
f1c25d3b | 2995 | op[3] = gen_rtx_REG (QImode, |
afee2a52 MM |
2996 | ((true_regnum (operands[0]) - 1) & 15) + 16); |
2997 | op[4] = tmp_reg_rtx; | |
2998 | saved_in_tmp = 1; | |
2999 | ||
3000 | if (len) | |
3001 | *len = 3; /* Includes "mov %3,%4" after the loop. */ | |
3002 | else | |
3003 | strcat (str, (AS2 (mov,%4,%3) CR_TAB | |
3004 | AS2 (ldi,%3,%2))); | |
3005 | } | |
3006 | ||
0db7ad3a | 3007 | second_label = 0; |
90e7678c DC |
3008 | } |
3009 | else if (GET_CODE (operands[2]) == MEM) | |
3010 | { | |
90e7678c | 3011 | rtx op_mov[10]; |
0db7ad3a | 3012 | |
90e7678c DC |
3013 | op[3] = op_mov[0] = tmp_reg_rtx; |
3014 | op_mov[1] = op[2]; | |
afee2a52 MM |
3015 | |
3016 | if (len) | |
3017 | out_movqi_r_mr (insn, op_mov, len); | |
90e7678c | 3018 | else |
afee2a52 | 3019 | output_asm_insn (out_movqi_r_mr (insn, op_mov, NULL), op_mov); |
90e7678c | 3020 | } |
c4984bad | 3021 | else if (register_operand (operands[2], QImode)) |
90e7678c | 3022 | { |
90e7678c | 3023 | if (reg_unused_after (insn, operands[2])) |
0db7ad3a | 3024 | op[3] = op[2]; |
90e7678c DC |
3025 | else |
3026 | { | |
3027 | op[3] = tmp_reg_rtx; | |
afee2a52 MM |
3028 | if (!len) |
3029 | strcat (str, (AS2 (mov,%3,%2) CR_TAB)); | |
90e7678c | 3030 | } |
afee2a52 MM |
3031 | } |
3032 | else | |
c725bd79 | 3033 | fatal_insn ("bad shift insn:", insn); |
afee2a52 MM |
3034 | |
3035 | if (second_label) | |
3036 | { | |
0db7ad3a DC |
3037 | if (len) |
3038 | ++*len; | |
3039 | else | |
3040 | strcat (str, AS1 (rjmp,2f)); | |
90e7678c | 3041 | } |
afee2a52 MM |
3042 | |
3043 | if (len) | |
3044 | *len += t_len + 2; /* template + dec + brXX */ | |
3045 | else | |
90e7678c | 3046 | { |
80b8585d | 3047 | strcat (str, "\n1:\t"); |
90e7678c | 3048 | strcat (str, template); |
0db7ad3a | 3049 | strcat (str, second_label ? "\n2:\t" : "\n\t"); |
afee2a52 MM |
3050 | strcat (str, use_zero_reg ? AS1 (lsr,%3) : AS1 (dec,%3)); |
3051 | strcat (str, CR_TAB); | |
3052 | strcat (str, second_label ? AS1 (brpl,1b) : AS1 (brne,1b)); | |
3053 | if (saved_in_tmp) | |
3054 | strcat (str, (CR_TAB AS2 (mov,%3,%4))); | |
90e7678c DC |
3055 | output_asm_insn (str, op); |
3056 | } | |
3057 | } | |
3058 | ||
3059 | ||
3060 | /* 8bit shift left ((char)x << i) */ | |
3061 | ||
5fecfd8d | 3062 | const char * |
269e3795 | 3063 | ashlqi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3064 | { |
3065 | if (GET_CODE (operands[2]) == CONST_INT) | |
3066 | { | |
3067 | int k; | |
3454eb73 | 3068 | |
90e7678c DC |
3069 | if (!len) |
3070 | len = &k; | |
3454eb73 | 3071 | |
90e7678c DC |
3072 | switch (INTVAL (operands[2])) |
3073 | { | |
3454eb73 | 3074 | default: |
a3cf5992 MM |
3075 | if (INTVAL (operands[2]) < 8) |
3076 | break; | |
3077 | ||
3454eb73 DC |
3078 | *len = 1; |
3079 | return AS1 (clr,%0); | |
3080 | ||
90e7678c | 3081 | case 1: |
3454eb73 | 3082 | *len = 1; |
90e7678c | 3083 | return AS1 (lsl,%0); |
3454eb73 | 3084 | |
90e7678c | 3085 | case 2: |
3454eb73 | 3086 | *len = 2; |
90e7678c DC |
3087 | return (AS1 (lsl,%0) CR_TAB |
3088 | AS1 (lsl,%0)); | |
3454eb73 | 3089 | |
90e7678c | 3090 | case 3: |
3454eb73 | 3091 | *len = 3; |
90e7678c DC |
3092 | return (AS1 (lsl,%0) CR_TAB |
3093 | AS1 (lsl,%0) CR_TAB | |
3094 | AS1 (lsl,%0)); | |
3454eb73 | 3095 | |
90e7678c | 3096 | case 4: |
c4984bad | 3097 | if (test_hard_reg_class (LD_REGS, operands[0])) |
90e7678c | 3098 | { |
3454eb73 | 3099 | *len = 2; |
90e7678c DC |
3100 | return (AS1 (swap,%0) CR_TAB |
3101 | AS2 (andi,%0,0xf0)); | |
3102 | } | |
3454eb73 | 3103 | *len = 4; |
90e7678c DC |
3104 | return (AS1 (lsl,%0) CR_TAB |
3105 | AS1 (lsl,%0) CR_TAB | |
3106 | AS1 (lsl,%0) CR_TAB | |
3107 | AS1 (lsl,%0)); | |
3454eb73 | 3108 | |
90e7678c | 3109 | case 5: |
c4984bad | 3110 | if (test_hard_reg_class (LD_REGS, operands[0])) |
90e7678c | 3111 | { |
3454eb73 | 3112 | *len = 3; |
90e7678c DC |
3113 | return (AS1 (swap,%0) CR_TAB |
3114 | AS1 (lsl,%0) CR_TAB | |
3115 | AS2 (andi,%0,0xe0)); | |
3116 | } | |
3454eb73 | 3117 | *len = 5; |
90e7678c DC |
3118 | return (AS1 (lsl,%0) CR_TAB |
3119 | AS1 (lsl,%0) CR_TAB | |
3120 | AS1 (lsl,%0) CR_TAB | |
3121 | AS1 (lsl,%0) CR_TAB | |
3122 | AS1 (lsl,%0)); | |
3454eb73 | 3123 | |
90e7678c | 3124 | case 6: |
c4984bad | 3125 | if (test_hard_reg_class (LD_REGS, operands[0])) |
90e7678c | 3126 | { |
3454eb73 | 3127 | *len = 4; |
90e7678c DC |
3128 | return (AS1 (swap,%0) CR_TAB |
3129 | AS1 (lsl,%0) CR_TAB | |
3130 | AS1 (lsl,%0) CR_TAB | |
3131 | AS2 (andi,%0,0xc0)); | |
3132 | } | |
3454eb73 | 3133 | *len = 6; |
90e7678c DC |
3134 | return (AS1 (lsl,%0) CR_TAB |
3135 | AS1 (lsl,%0) CR_TAB | |
3136 | AS1 (lsl,%0) CR_TAB | |
3137 | AS1 (lsl,%0) CR_TAB | |
3138 | AS1 (lsl,%0) CR_TAB | |
3139 | AS1 (lsl,%0)); | |
3454eb73 | 3140 | |
90e7678c | 3141 | case 7: |
3454eb73 | 3142 | *len = 3; |
90e7678c DC |
3143 | return (AS1 (ror,%0) CR_TAB |
3144 | AS1 (clr,%0) CR_TAB | |
3145 | AS1 (ror,%0)); | |
3146 | } | |
3147 | } | |
3454eb73 | 3148 | else if (CONSTANT_P (operands[2])) |
c725bd79 | 3149 | fatal_insn ("internal compiler error. Incorrect shift:", insn); |
3454eb73 | 3150 | |
0db7ad3a | 3151 | out_shift_with_cnt (AS1 (lsl,%0), |
afee2a52 | 3152 | insn, operands, len, 1); |
90e7678c DC |
3153 | return ""; |
3154 | } | |
3155 | ||
3156 | ||
3157 | /* 16bit shift left ((short)x << i) */ | |
3158 | ||
5fecfd8d | 3159 | const char * |
269e3795 | 3160 | ashlhi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3161 | { |
3162 | if (GET_CODE (operands[2]) == CONST_INT) | |
3163 | { | |
afee2a52 MM |
3164 | int scratch = (GET_CODE (PATTERN (insn)) == PARALLEL); |
3165 | int ldi_ok = test_hard_reg_class (LD_REGS, operands[0]); | |
90e7678c | 3166 | int k; |
afee2a52 | 3167 | int *t = len; |
3454eb73 | 3168 | |
90e7678c DC |
3169 | if (!len) |
3170 | len = &k; | |
3454eb73 | 3171 | |
90e7678c DC |
3172 | switch (INTVAL (operands[2])) |
3173 | { | |
a3cf5992 MM |
3174 | default: |
3175 | if (INTVAL (operands[2]) < 16) | |
3176 | break; | |
3177 | ||
3178 | *len = 2; | |
3179 | return (AS1 (clr,%B0) CR_TAB | |
3180 | AS1 (clr,%A0)); | |
3181 | ||
afee2a52 MM |
3182 | case 4: |
3183 | if (optimize_size && scratch) | |
3184 | break; /* 5 */ | |
3185 | if (ldi_ok) | |
3186 | { | |
3187 | *len = 6; | |
3188 | return (AS1 (swap,%A0) CR_TAB | |
3189 | AS1 (swap,%B0) CR_TAB | |
3190 | AS2 (andi,%B0,0xf0) CR_TAB | |
3191 | AS2 (eor,%B0,%A0) CR_TAB | |
3192 | AS2 (andi,%A0,0xf0) CR_TAB | |
3193 | AS2 (eor,%B0,%A0)); | |
3194 | } | |
3195 | if (scratch) | |
3196 | { | |
3197 | *len = 7; | |
3198 | return (AS1 (swap,%A0) CR_TAB | |
3199 | AS1 (swap,%B0) CR_TAB | |
3200 | AS2 (ldi,%3,0xf0) CR_TAB | |
3201 | AS2 (and,%B0,%3) CR_TAB | |
3202 | AS2 (eor,%B0,%A0) CR_TAB | |
3203 | AS2 (and,%A0,%3) CR_TAB | |
3204 | AS2 (eor,%B0,%A0)); | |
3205 | } | |
3206 | break; /* optimize_size ? 6 : 8 */ | |
3454eb73 | 3207 | |
afee2a52 MM |
3208 | case 5: |
3209 | if (optimize_size) | |
3210 | break; /* scratch ? 5 : 6 */ | |
3211 | if (ldi_ok) | |
3212 | { | |
3213 | *len = 8; | |
3214 | return (AS1 (lsl,%A0) CR_TAB | |
3215 | AS1 (rol,%B0) CR_TAB | |
3216 | AS1 (swap,%A0) CR_TAB | |
3217 | AS1 (swap,%B0) CR_TAB | |
3218 | AS2 (andi,%B0,0xf0) CR_TAB | |
3219 | AS2 (eor,%B0,%A0) CR_TAB | |
3220 | AS2 (andi,%A0,0xf0) CR_TAB | |
3221 | AS2 (eor,%B0,%A0)); | |
3222 | } | |
3223 | if (scratch) | |
3224 | { | |
3225 | *len = 9; | |
3226 | return (AS1 (lsl,%A0) CR_TAB | |
3227 | AS1 (rol,%B0) CR_TAB | |
3228 | AS1 (swap,%A0) CR_TAB | |
3229 | AS1 (swap,%B0) CR_TAB | |
3230 | AS2 (ldi,%3,0xf0) CR_TAB | |
3231 | AS2 (and,%B0,%3) CR_TAB | |
3232 | AS2 (eor,%B0,%A0) CR_TAB | |
3233 | AS2 (and,%A0,%3) CR_TAB | |
3234 | AS2 (eor,%B0,%A0)); | |
3235 | } | |
3236 | break; /* 10 */ | |
3237 | ||
3238 | case 6: | |
3239 | if (optimize_size) | |
3240 | break; /* scratch ? 5 : 6 */ | |
3241 | *len = 9; | |
3242 | return (AS1 (clr,__tmp_reg__) CR_TAB | |
3243 | AS1 (lsr,%B0) CR_TAB | |
3244 | AS1 (ror,%A0) CR_TAB | |
3245 | AS1 (ror,__tmp_reg__) CR_TAB | |
3246 | AS1 (lsr,%B0) CR_TAB | |
3247 | AS1 (ror,%A0) CR_TAB | |
3248 | AS1 (ror,__tmp_reg__) CR_TAB | |
3249 | AS2 (mov,%B0,%A0) CR_TAB | |
3250 | AS2 (mov,%A0,__tmp_reg__)); | |
3454eb73 | 3251 | |
adcd8f77 MM |
3252 | case 7: |
3253 | *len = 5; | |
3254 | return (AS1 (lsr,%B0) CR_TAB | |
3255 | AS2 (mov,%B0,%A0) CR_TAB | |
3256 | AS1 (clr,%A0) CR_TAB | |
3257 | AS1 (ror,%B0) CR_TAB | |
3258 | AS1 (ror,%A0)); | |
3259 | ||
90e7678c | 3260 | case 8: |
120b24f7 AS |
3261 | return *len = 2, (AS2 (mov,%B0,%A1) CR_TAB |
3262 | AS1 (clr,%A0)); | |
adcd8f77 MM |
3263 | |
3264 | case 9: | |
3265 | *len = 3; | |
3266 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3267 | AS1 (clr,%A0) CR_TAB | |
3268 | AS1 (lsl,%B0)); | |
3269 | ||
3270 | case 10: | |
3271 | *len = 4; | |
3272 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3273 | AS1 (clr,%A0) CR_TAB | |
3274 | AS1 (lsl,%B0) CR_TAB | |
3275 | AS1 (lsl,%B0)); | |
3276 | ||
3277 | case 11: | |
3278 | *len = 5; | |
3279 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3280 | AS1 (clr,%A0) CR_TAB | |
3281 | AS1 (lsl,%B0) CR_TAB | |
3282 | AS1 (lsl,%B0) CR_TAB | |
3283 | AS1 (lsl,%B0)); | |
3284 | ||
3285 | case 12: | |
afee2a52 | 3286 | if (ldi_ok) |
adcd8f77 MM |
3287 | { |
3288 | *len = 4; | |
3289 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3290 | AS1 (clr,%A0) CR_TAB | |
3291 | AS1 (swap,%B0) CR_TAB | |
3292 | AS2 (andi,%B0,0xf0)); | |
3293 | } | |
afee2a52 MM |
3294 | if (scratch) |
3295 | { | |
3296 | *len = 5; | |
3297 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3298 | AS1 (clr,%A0) CR_TAB | |
3299 | AS1 (swap,%B0) CR_TAB | |
3300 | AS2 (ldi,%3,0xf0) CR_TAB | |
3301 | AS2 (and,%B0,%3)); | |
3302 | } | |
3303 | *len = 6; | |
adcd8f77 MM |
3304 | return (AS2 (mov,%B0,%A0) CR_TAB |
3305 | AS1 (clr,%A0) CR_TAB | |
afee2a52 MM |
3306 | AS1 (lsl,%B0) CR_TAB |
3307 | AS1 (lsl,%B0) CR_TAB | |
3308 | AS1 (lsl,%B0) CR_TAB | |
3309 | AS1 (lsl,%B0)); | |
adcd8f77 MM |
3310 | |
3311 | case 13: | |
afee2a52 | 3312 | if (ldi_ok) |
adcd8f77 MM |
3313 | { |
3314 | *len = 5; | |
3315 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3316 | AS1 (clr,%A0) CR_TAB | |
3317 | AS1 (swap,%B0) CR_TAB | |
3318 | AS1 (lsl,%B0) CR_TAB | |
3319 | AS2 (andi,%B0,0xe0)); | |
3320 | } | |
dd6d1f8c | 3321 | if (AVR_HAVE_MUL && scratch) |
adcd8f77 MM |
3322 | { |
3323 | *len = 5; | |
3324 | return (AS2 (ldi,%3,0x20) CR_TAB | |
3325 | AS2 (mul,%A0,%3) CR_TAB | |
3326 | AS2 (mov,%B0,r0) CR_TAB | |
3327 | AS1 (clr,%A0) CR_TAB | |
3328 | AS1 (clr,__zero_reg__)); | |
3329 | } | |
afee2a52 MM |
3330 | if (optimize_size && scratch) |
3331 | break; /* 5 */ | |
3332 | if (scratch) | |
3333 | { | |
3334 | *len = 6; | |
3335 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3336 | AS1 (clr,%A0) CR_TAB | |
3337 | AS1 (swap,%B0) CR_TAB | |
3338 | AS1 (lsl,%B0) CR_TAB | |
3339 | AS2 (ldi,%3,0xe0) CR_TAB | |
3340 | AS2 (and,%B0,%3)); | |
3341 | } | |
dd6d1f8c | 3342 | if (AVR_HAVE_MUL) |
afee2a52 MM |
3343 | { |
3344 | *len = 6; | |
3345 | return ("set" CR_TAB | |
3346 | AS2 (bld,r1,5) CR_TAB | |
3347 | AS2 (mul,%A0,r1) CR_TAB | |
3348 | AS2 (mov,%B0,r0) CR_TAB | |
3349 | AS1 (clr,%A0) CR_TAB | |
3350 | AS1 (clr,__zero_reg__)); | |
3351 | } | |
3352 | *len = 7; | |
3353 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3354 | AS1 (clr,%A0) CR_TAB | |
3355 | AS1 (lsl,%B0) CR_TAB | |
3356 | AS1 (lsl,%B0) CR_TAB | |
3357 | AS1 (lsl,%B0) CR_TAB | |
3358 | AS1 (lsl,%B0) CR_TAB | |
3359 | AS1 (lsl,%B0)); | |
adcd8f77 MM |
3360 | |
3361 | case 14: | |
dd6d1f8c | 3362 | if (AVR_HAVE_MUL && ldi_ok) |
afee2a52 MM |
3363 | { |
3364 | *len = 5; | |
3365 | return (AS2 (ldi,%B0,0x40) CR_TAB | |
3366 | AS2 (mul,%A0,%B0) CR_TAB | |
3367 | AS2 (mov,%B0,r0) CR_TAB | |
3368 | AS1 (clr,%A0) CR_TAB | |
3369 | AS1 (clr,__zero_reg__)); | |
3370 | } | |
dd6d1f8c | 3371 | if (AVR_HAVE_MUL && scratch) |
adcd8f77 MM |
3372 | { |
3373 | *len = 5; | |
3374 | return (AS2 (ldi,%3,0x40) CR_TAB | |
3375 | AS2 (mul,%A0,%3) CR_TAB | |
3376 | AS2 (mov,%B0,r0) CR_TAB | |
3377 | AS1 (clr,%A0) CR_TAB | |
3378 | AS1 (clr,__zero_reg__)); | |
3379 | } | |
afee2a52 MM |
3380 | if (optimize_size && ldi_ok) |
3381 | { | |
3382 | *len = 5; | |
3383 | return (AS2 (mov,%B0,%A0) CR_TAB | |
3384 | AS2 (ldi,%A0,6) "\n1:\t" | |
3385 | AS1 (lsl,%B0) CR_TAB | |
3386 | AS1 (dec,%A0) CR_TAB | |
3387 | AS1 (brne,1b)); | |
3388 | } | |
3389 | if (optimize_size && scratch) | |
3390 | break; /* 5 */ | |
3391 | *len = 6; | |
3392 | return (AS1 (clr,%B0) CR_TAB | |
3393 | AS1 (lsr,%A0) CR_TAB | |
3394 | AS1 (ror,%B0) CR_TAB | |
3395 | AS1 (lsr,%A0) CR_TAB | |
3396 | AS1 (ror,%B0) CR_TAB | |
3397 | AS1 (clr,%A0)); | |
adcd8f77 MM |
3398 | |
3399 | case 15: | |
3400 | *len = 4; | |
3401 | return (AS1 (clr,%B0) CR_TAB | |
3402 | AS1 (lsr,%A0) CR_TAB | |
3403 | AS1 (ror,%B0) CR_TAB | |
3404 | AS1 (clr,%A0)); | |
90e7678c | 3405 | } |
adcd8f77 | 3406 | len = t; |
90e7678c | 3407 | } |
afee2a52 MM |
3408 | out_shift_with_cnt ((AS1 (lsl,%A0) CR_TAB |
3409 | AS1 (rol,%B0)), | |
3410 | insn, operands, len, 2); | |
90e7678c DC |
3411 | return ""; |
3412 | } | |
3413 | ||
3414 | ||
3415 | /* 32bit shift left ((long)x << i) */ | |
3416 | ||
5fecfd8d | 3417 | const char * |
269e3795 | 3418 | ashlsi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3419 | { |
3420 | if (GET_CODE (operands[2]) == CONST_INT) | |
3421 | { | |
3422 | int k; | |
afee2a52 | 3423 | int *t = len; |
3454eb73 | 3424 | |
90e7678c DC |
3425 | if (!len) |
3426 | len = &k; | |
3454eb73 | 3427 | |
90e7678c DC |
3428 | switch (INTVAL (operands[2])) |
3429 | { | |
a3cf5992 MM |
3430 | default: |
3431 | if (INTVAL (operands[2]) < 32) | |
3432 | break; | |
3433 | ||
4301ec4f | 3434 | if (AVR_HAVE_MOVW) |
a3cf5992 MM |
3435 | return *len = 3, (AS1 (clr,%D0) CR_TAB |
3436 | AS1 (clr,%C0) CR_TAB | |
3437 | AS2 (movw,%A0,%C0)); | |
3438 | *len = 4; | |
3439 | return (AS1 (clr,%D0) CR_TAB | |
3440 | AS1 (clr,%C0) CR_TAB | |
3441 | AS1 (clr,%B0) CR_TAB | |
3442 | AS1 (clr,%A0)); | |
3443 | ||
90e7678c DC |
3444 | case 8: |
3445 | { | |
3446 | int reg0 = true_regnum (operands[0]); | |
3447 | int reg1 = true_regnum (operands[1]); | |
3454eb73 | 3448 | *len = 4; |
90e7678c DC |
3449 | if (reg0 >= reg1) |
3450 | return (AS2 (mov,%D0,%C1) CR_TAB | |
3451 | AS2 (mov,%C0,%B1) CR_TAB | |
3452 | AS2 (mov,%B0,%A1) CR_TAB | |
3453 | AS1 (clr,%A0)); | |
90e7678c DC |
3454 | else |
3455 | return (AS1 (clr,%A0) CR_TAB | |
3456 | AS2 (mov,%B0,%A1) CR_TAB | |
3457 | AS2 (mov,%C0,%B1) CR_TAB | |
3458 | AS2 (mov,%D0,%C1)); | |
3459 | } | |
3454eb73 | 3460 | |
90e7678c DC |
3461 | case 16: |
3462 | { | |
3463 | int reg0 = true_regnum (operands[0]); | |
3464 | int reg1 = true_regnum (operands[1]); | |
90e7678c | 3465 | if (reg0 + 2 == reg1) |
120b24f7 AS |
3466 | return *len = 2, (AS1 (clr,%B0) CR_TAB |
3467 | AS1 (clr,%A0)); | |
3468 | if (AVR_HAVE_MOVW) | |
3469 | return *len = 3, (AS2 (movw,%C0,%A1) CR_TAB | |
3470 | AS1 (clr,%B0) CR_TAB | |
3471 | AS1 (clr,%A0)); | |
90e7678c | 3472 | else |
120b24f7 AS |
3473 | return *len = 4, (AS2 (mov,%C0,%A1) CR_TAB |
3474 | AS2 (mov,%D0,%B1) CR_TAB | |
3475 | AS1 (clr,%B0) CR_TAB | |
3476 | AS1 (clr,%A0)); | |
90e7678c | 3477 | } |
3454eb73 | 3478 | |
90e7678c | 3479 | case 24: |
3454eb73 | 3480 | *len = 4; |
120b24f7 AS |
3481 | return (AS2 (mov,%D0,%A1) CR_TAB |
3482 | AS1 (clr,%C0) CR_TAB | |
3483 | AS1 (clr,%B0) CR_TAB | |
3484 | AS1 (clr,%A0)); | |
adcd8f77 MM |
3485 | |
3486 | case 31: | |
3487 | *len = 6; | |
3488 | return (AS1 (clr,%D0) CR_TAB | |
3489 | AS1 (lsr,%A0) CR_TAB | |
3490 | AS1 (ror,%D0) CR_TAB | |
3491 | AS1 (clr,%C0) CR_TAB | |
3492 | AS1 (clr,%B0) CR_TAB | |
3493 | AS1 (clr,%A0)); | |
90e7678c | 3494 | } |
adcd8f77 | 3495 | len = t; |
90e7678c | 3496 | } |
afee2a52 MM |
3497 | out_shift_with_cnt ((AS1 (lsl,%A0) CR_TAB |
3498 | AS1 (rol,%B0) CR_TAB | |
3499 | AS1 (rol,%C0) CR_TAB | |
3500 | AS1 (rol,%D0)), | |
3501 | insn, operands, len, 4); | |
90e7678c DC |
3502 | return ""; |
3503 | } | |
3504 | ||
3505 | /* 8bit arithmetic shift right ((signed char)x >> i) */ | |
3506 | ||
5fecfd8d | 3507 | const char * |
269e3795 | 3508 | ashrqi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3509 | { |
3510 | if (GET_CODE (operands[2]) == CONST_INT) | |
3511 | { | |
90e7678c | 3512 | int k; |
3454eb73 | 3513 | |
90e7678c DC |
3514 | if (!len) |
3515 | len = &k; | |
3454eb73 | 3516 | |
90e7678c DC |
3517 | switch (INTVAL (operands[2])) |
3518 | { | |
90e7678c | 3519 | case 1: |
3454eb73 | 3520 | *len = 1; |
90e7678c | 3521 | return AS1 (asr,%0); |
3454eb73 | 3522 | |
90e7678c | 3523 | case 2: |
3454eb73 | 3524 | *len = 2; |
90e7678c DC |
3525 | return (AS1 (asr,%0) CR_TAB |
3526 | AS1 (asr,%0)); | |
3454eb73 | 3527 | |
90e7678c | 3528 | case 3: |
3454eb73 | 3529 | *len = 3; |
90e7678c DC |
3530 | return (AS1 (asr,%0) CR_TAB |
3531 | AS1 (asr,%0) CR_TAB | |
3532 | AS1 (asr,%0)); | |
3454eb73 | 3533 | |
90e7678c | 3534 | case 4: |
3454eb73 DC |
3535 | *len = 4; |
3536 | return (AS1 (asr,%0) CR_TAB | |
3537 | AS1 (asr,%0) CR_TAB | |
3538 | AS1 (asr,%0) CR_TAB | |
3539 | AS1 (asr,%0)); | |
3540 | ||
3541 | case 5: | |
3542 | *len = 5; | |
90e7678c | 3543 | return (AS1 (asr,%0) CR_TAB |
3454eb73 | 3544 | AS1 (asr,%0) CR_TAB |
90e7678c DC |
3545 | AS1 (asr,%0) CR_TAB |
3546 | AS1 (asr,%0) CR_TAB | |
3547 | AS1 (asr,%0)); | |
3454eb73 DC |
3548 | |
3549 | case 6: | |
3550 | *len = 4; | |
3551 | return (AS2 (bst,%0,6) CR_TAB | |
3552 | AS1 (lsl,%0) CR_TAB | |
3553 | AS2 (sbc,%0,%0) CR_TAB | |
3554 | AS2 (bld,%0,0)); | |
3555 | ||
3556 | default: | |
a3cf5992 MM |
3557 | if (INTVAL (operands[2]) < 8) |
3558 | break; | |
3559 | ||
3560 | /* fall through */ | |
3561 | ||
3454eb73 DC |
3562 | case 7: |
3563 | *len = 2; | |
3564 | return (AS1 (lsl,%0) CR_TAB | |
3565 | AS2 (sbc,%0,%0)); | |
90e7678c DC |
3566 | } |
3567 | } | |
3454eb73 | 3568 | else if (CONSTANT_P (operands[2])) |
c725bd79 | 3569 | fatal_insn ("internal compiler error. Incorrect shift:", insn); |
3454eb73 | 3570 | |
0db7ad3a | 3571 | out_shift_with_cnt (AS1 (asr,%0), |
afee2a52 | 3572 | insn, operands, len, 1); |
90e7678c DC |
3573 | return ""; |
3574 | } | |
3575 | ||
3576 | ||
3577 | /* 16bit arithmetic shift right ((signed short)x >> i) */ | |
3578 | ||
5fecfd8d | 3579 | const char * |
269e3795 | 3580 | ashrhi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3581 | { |
3582 | if (GET_CODE (operands[2]) == CONST_INT) | |
3583 | { | |
afee2a52 MM |
3584 | int scratch = (GET_CODE (PATTERN (insn)) == PARALLEL); |
3585 | int ldi_ok = test_hard_reg_class (LD_REGS, operands[0]); | |
90e7678c | 3586 | int k; |
3454eb73 DC |
3587 | int *t = len; |
3588 | ||
90e7678c DC |
3589 | if (!len) |
3590 | len = &k; | |
3454eb73 | 3591 | |
90e7678c DC |
3592 | switch (INTVAL (operands[2])) |
3593 | { | |
afee2a52 MM |
3594 | case 4: |
3595 | case 5: | |
3596 | /* XXX try to optimize this too? */ | |
3597 | break; | |
3454eb73 | 3598 | |
afee2a52 MM |
3599 | case 6: |
3600 | if (optimize_size) | |
3601 | break; /* scratch ? 5 : 6 */ | |
3602 | *len = 8; | |
3603 | return (AS2 (mov,__tmp_reg__,%A0) CR_TAB | |
3604 | AS2 (mov,%A0,%B0) CR_TAB | |
3605 | AS1 (lsl,__tmp_reg__) CR_TAB | |
3606 | AS1 (rol,%A0) CR_TAB | |
3607 | AS2 (sbc,%B0,%B0) CR_TAB | |
3608 | AS1 (lsl,__tmp_reg__) CR_TAB | |
3609 | AS1 (rol,%A0) CR_TAB | |
3610 | AS1 (rol,%B0)); | |
3454eb73 | 3611 | |
adcd8f77 MM |
3612 | case 7: |
3613 | *len = 4; | |
3614 | return (AS1 (lsl,%A0) CR_TAB | |
3615 | AS2 (mov,%A0,%B0) CR_TAB | |
3616 | AS1 (rol,%A0) CR_TAB | |
3617 | AS2 (sbc,%B0,%B0)); | |
3618 | ||
90e7678c | 3619 | case 8: |
afee2a52 MM |
3620 | { |
3621 | int reg0 = true_regnum (operands[0]); | |
3622 | int reg1 = true_regnum (operands[1]); | |
3623 | ||
3624 | if (reg0 == reg1) | |
3625 | return *len = 3, (AS2 (mov,%A0,%B0) CR_TAB | |
3626 | AS1 (lsl,%B0) CR_TAB | |
3627 | AS2 (sbc,%B0,%B0)); | |
120b24f7 AS |
3628 | else |
3629 | return *len = 4, (AS2 (mov,%A0,%B1) CR_TAB | |
3630 | AS1 (clr,%B0) CR_TAB | |
3631 | AS2 (sbrc,%A0,7) CR_TAB | |
3632 | AS1 (dec,%B0)); | |
afee2a52 | 3633 | } |
3454eb73 | 3634 | |
adcd8f77 MM |
3635 | case 9: |
3636 | *len = 4; | |
3637 | return (AS2 (mov,%A0,%B0) CR_TAB | |
3638 | AS1 (lsl,%B0) CR_TAB | |
3639 | AS2 (sbc,%B0,%B0) CR_TAB | |
3640 | AS1 (asr,%A0)); | |
3641 | ||
3642 | case 10: | |
3643 | *len = 5; | |
3644 | return (AS2 (mov,%A0,%B0) CR_TAB | |
3645 | AS1 (lsl,%B0) CR_TAB | |
3646 | AS2 (sbc,%B0,%B0) CR_TAB | |
3647 | AS1 (asr,%A0) CR_TAB | |
3648 | AS1 (asr,%A0)); | |
3649 | ||
3650 | case 11: | |
dd6d1f8c | 3651 | if (AVR_HAVE_MUL && ldi_ok) |
adcd8f77 MM |
3652 | { |
3653 | *len = 5; | |
afee2a52 MM |
3654 | return (AS2 (ldi,%A0,0x20) CR_TAB |
3655 | AS2 (muls,%B0,%A0) CR_TAB | |
3656 | AS2 (mov,%A0,r1) CR_TAB | |
3657 | AS2 (sbc,%B0,%B0) CR_TAB | |
adcd8f77 MM |
3658 | AS1 (clr,__zero_reg__)); |
3659 | } | |
afee2a52 MM |
3660 | if (optimize_size && scratch) |
3661 | break; /* 5 */ | |
3662 | *len = 6; | |
3663 | return (AS2 (mov,%A0,%B0) CR_TAB | |
3664 | AS1 (lsl,%B0) CR_TAB | |
3665 | AS2 (sbc,%B0,%B0) CR_TAB | |
3666 | AS1 (asr,%A0) CR_TAB | |
3667 | AS1 (asr,%A0) CR_TAB | |
3668 | AS1 (asr,%A0)); | |
adcd8f77 MM |
3669 | |
3670 | case 12: | |
dd6d1f8c | 3671 | if (AVR_HAVE_MUL && ldi_ok) |
adcd8f77 MM |
3672 | { |
3673 | *len = 5; | |
afee2a52 MM |
3674 | return (AS2 (ldi,%A0,0x10) CR_TAB |
3675 | AS2 (muls,%B0,%A0) CR_TAB | |
3676 | AS2 (mov,%A0,r1) CR_TAB | |
3677 | AS2 (sbc,%B0,%B0) CR_TAB | |
adcd8f77 MM |
3678 | AS1 (clr,__zero_reg__)); |
3679 | } | |
afee2a52 MM |
3680 | if (optimize_size && scratch) |
3681 | break; /* 5 */ | |
3682 | *len = 7; | |
3683 | return (AS2 (mov,%A0,%B0) CR_TAB | |
3684 | AS1 (lsl,%B0) CR_TAB | |
3685 | AS2 (sbc,%B0,%B0) CR_TAB | |
3686 | AS1 (asr,%A0) CR_TAB | |
3687 | AS1 (asr,%A0) CR_TAB | |
3688 | AS1 (asr,%A0) CR_TAB | |
3689 | AS1 (asr,%A0)); | |
adcd8f77 MM |
3690 | |
3691 | case 13: | |
dd6d1f8c | 3692 | if (AVR_HAVE_MUL && ldi_ok) |
adcd8f77 MM |
3693 | { |
3694 | *len = 5; | |
afee2a52 MM |
3695 | return (AS2 (ldi,%A0,0x08) CR_TAB |
3696 | AS2 (muls,%B0,%A0) CR_TAB | |
3697 | AS2 (mov,%A0,r1) CR_TAB | |
3698 | AS2 (sbc,%B0,%B0) CR_TAB | |
adcd8f77 MM |
3699 | AS1 (clr,__zero_reg__)); |
3700 | } | |
afee2a52 MM |
3701 | if (optimize_size) |
3702 | break; /* scratch ? 5 : 7 */ | |
3703 | *len = 8; | |
3704 | return (AS2 (mov,%A0,%B0) CR_TAB | |
3705 | AS1 (lsl,%B0) CR_TAB | |
3706 | AS2 (sbc,%B0,%B0) CR_TAB | |
3707 | AS1 (asr,%A0) CR_TAB | |
3708 | AS1 (asr,%A0) CR_TAB | |
3709 | AS1 (asr,%A0) CR_TAB | |
3710 | AS1 (asr,%A0) CR_TAB | |
3711 | AS1 (asr,%A0)); | |
adcd8f77 MM |
3712 | |
3713 | case 14: | |
3714 | *len = 5; | |
3715 | return (AS1 (lsl,%B0) CR_TAB | |
3716 | AS2 (sbc,%A0,%A0) CR_TAB | |
3717 | AS1 (lsl,%B0) CR_TAB | |
3718 | AS2 (mov,%B0,%A0) CR_TAB | |
3719 | AS1 (rol,%A0)); | |
3720 | ||
a3cf5992 MM |
3721 | default: |
3722 | if (INTVAL (operands[2]) < 16) | |
3723 | break; | |
3724 | ||
3725 | /* fall through */ | |
3726 | ||
28e801e2 DC |
3727 | case 15: |
3728 | return *len = 3, (AS1 (lsl,%B0) CR_TAB | |
3729 | AS2 (sbc,%A0,%A0) CR_TAB | |
3730 | AS2 (mov,%B0,%A0)); | |
90e7678c | 3731 | } |
adcd8f77 | 3732 | len = t; |
90e7678c | 3733 | } |
afee2a52 MM |
3734 | out_shift_with_cnt ((AS1 (asr,%B0) CR_TAB |
3735 | AS1 (ror,%A0)), | |
3736 | insn, operands, len, 2); | |
90e7678c DC |
3737 | return ""; |
3738 | } | |
3739 | ||
3740 | ||
3741 | /* 32bit arithmetic shift right ((signed long)x >> i) */ | |
3742 | ||
5fecfd8d | 3743 | const char * |
269e3795 | 3744 | ashrsi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3745 | { |
3746 | if (GET_CODE (operands[2]) == CONST_INT) | |
3747 | { | |
3748 | int k; | |
3749 | int *t = len; | |
3454eb73 | 3750 | |
90e7678c DC |
3751 | if (!len) |
3752 | len = &k; | |
3454eb73 | 3753 | |
90e7678c DC |
3754 | switch (INTVAL (operands[2])) |
3755 | { | |
90e7678c DC |
3756 | case 8: |
3757 | { | |
3758 | int reg0 = true_regnum (operands[0]); | |
3759 | int reg1 = true_regnum (operands[1]); | |
3760 | *len=6; | |
3761 | if (reg0 <= reg1) | |
3762 | return (AS2 (mov,%A0,%B1) CR_TAB | |
3763 | AS2 (mov,%B0,%C1) CR_TAB | |
3764 | AS2 (mov,%C0,%D1) CR_TAB | |
3765 | AS1 (clr,%D0) CR_TAB | |
3766 | AS2 (sbrc,%C0,7) CR_TAB | |
3767 | AS1 (dec,%D0)); | |
90e7678c DC |
3768 | else |
3769 | return (AS1 (clr,%D0) CR_TAB | |
28e801e2 | 3770 | AS2 (sbrc,%D1,7) CR_TAB |
90e7678c DC |
3771 | AS1 (dec,%D0) CR_TAB |
3772 | AS2 (mov,%C0,%D1) CR_TAB | |
3773 | AS2 (mov,%B0,%C1) CR_TAB | |
3774 | AS2 (mov,%A0,%B1)); | |
3775 | } | |
3454eb73 | 3776 | |
90e7678c DC |
3777 | case 16: |
3778 | { | |
3779 | int reg0 = true_regnum (operands[0]); | |
3780 | int reg1 = true_regnum (operands[1]); | |
120b24f7 AS |
3781 | |
3782 | if (reg0 == reg1 + 2) | |
90e7678c DC |
3783 | return *len = 4, (AS1 (clr,%D0) CR_TAB |
3784 | AS2 (sbrc,%B0,7) CR_TAB | |
3785 | AS1 (com,%D0) CR_TAB | |
3786 | AS2 (mov,%C0,%D0)); | |
120b24f7 AS |
3787 | if (AVR_HAVE_MOVW) |
3788 | return *len = 5, (AS2 (movw,%A0,%C1) CR_TAB | |
3789 | AS1 (clr,%D0) CR_TAB | |
3790 | AS2 (sbrc,%B0,7) CR_TAB | |
3791 | AS1 (com,%D0) CR_TAB | |
3792 | AS2 (mov,%C0,%D0)); | |
3793 | else | |
3794 | return *len = 6, (AS2 (mov,%B0,%D1) CR_TAB | |
3795 | AS2 (mov,%A0,%C1) CR_TAB | |
3796 | AS1 (clr,%D0) CR_TAB | |
3797 | AS2 (sbrc,%B0,7) CR_TAB | |
3798 | AS1 (com,%D0) CR_TAB | |
3799 | AS2 (mov,%C0,%D0)); | |
90e7678c | 3800 | } |
3454eb73 | 3801 | |
90e7678c | 3802 | case 24: |
120b24f7 AS |
3803 | return *len = 6, (AS2 (mov,%A0,%D1) CR_TAB |
3804 | AS1 (clr,%D0) CR_TAB | |
3805 | AS2 (sbrc,%A0,7) CR_TAB | |
3806 | AS1 (com,%D0) CR_TAB | |
3807 | AS2 (mov,%B0,%D0) CR_TAB | |
3808 | AS2 (mov,%C0,%D0)); | |
adcd8f77 | 3809 | |
a3cf5992 MM |
3810 | default: |
3811 | if (INTVAL (operands[2]) < 32) | |
3812 | break; | |
3813 | ||
3814 | /* fall through */ | |
3815 | ||
adcd8f77 | 3816 | case 31: |
4301ec4f | 3817 | if (AVR_HAVE_MOVW) |
adcd8f77 MM |
3818 | return *len = 4, (AS1 (lsl,%D0) CR_TAB |
3819 | AS2 (sbc,%A0,%A0) CR_TAB | |
3820 | AS2 (mov,%B0,%A0) CR_TAB | |
3821 | AS2 (movw,%C0,%A0)); | |
3822 | else | |
3823 | return *len = 5, (AS1 (lsl,%D0) CR_TAB | |
3824 | AS2 (sbc,%A0,%A0) CR_TAB | |
3825 | AS2 (mov,%B0,%A0) CR_TAB | |
3826 | AS2 (mov,%C0,%A0) CR_TAB | |
3827 | AS2 (mov,%D0,%A0)); | |
90e7678c | 3828 | } |
adcd8f77 | 3829 | len = t; |
90e7678c | 3830 | } |
afee2a52 MM |
3831 | out_shift_with_cnt ((AS1 (asr,%D0) CR_TAB |
3832 | AS1 (ror,%C0) CR_TAB | |
3833 | AS1 (ror,%B0) CR_TAB | |
3834 | AS1 (ror,%A0)), | |
3835 | insn, operands, len, 4); | |
90e7678c DC |
3836 | return ""; |
3837 | } | |
3838 | ||
3839 | /* 8bit logic shift right ((unsigned char)x >> i) */ | |
3840 | ||
5fecfd8d | 3841 | const char * |
269e3795 | 3842 | lshrqi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3843 | { |
3844 | if (GET_CODE (operands[2]) == CONST_INT) | |
3845 | { | |
3846 | int k; | |
3454eb73 | 3847 | |
90e7678c DC |
3848 | if (!len) |
3849 | len = &k; | |
3454eb73 | 3850 | |
90e7678c DC |
3851 | switch (INTVAL (operands[2])) |
3852 | { | |
3454eb73 | 3853 | default: |
a3cf5992 MM |
3854 | if (INTVAL (operands[2]) < 8) |
3855 | break; | |
3856 | ||
3454eb73 DC |
3857 | *len = 1; |
3858 | return AS1 (clr,%0); | |
3859 | ||
90e7678c | 3860 | case 1: |
3454eb73 | 3861 | *len = 1; |
90e7678c | 3862 | return AS1 (lsr,%0); |
3454eb73 | 3863 | |
90e7678c | 3864 | case 2: |
3454eb73 | 3865 | *len = 2; |
90e7678c DC |
3866 | return (AS1 (lsr,%0) CR_TAB |
3867 | AS1 (lsr,%0)); | |
3868 | case 3: | |
3454eb73 | 3869 | *len = 3; |
90e7678c DC |
3870 | return (AS1 (lsr,%0) CR_TAB |
3871 | AS1 (lsr,%0) CR_TAB | |
3872 | AS1 (lsr,%0)); | |
3454eb73 | 3873 | |
90e7678c | 3874 | case 4: |
c4984bad | 3875 | if (test_hard_reg_class (LD_REGS, operands[0])) |
90e7678c DC |
3876 | { |
3877 | *len=2; | |
3878 | return (AS1 (swap,%0) CR_TAB | |
3879 | AS2 (andi,%0,0x0f)); | |
3880 | } | |
3454eb73 | 3881 | *len = 4; |
90e7678c DC |
3882 | return (AS1 (lsr,%0) CR_TAB |
3883 | AS1 (lsr,%0) CR_TAB | |
3884 | AS1 (lsr,%0) CR_TAB | |
3885 | AS1 (lsr,%0)); | |
3454eb73 | 3886 | |
90e7678c | 3887 | case 5: |
c4984bad | 3888 | if (test_hard_reg_class (LD_REGS, operands[0])) |
90e7678c | 3889 | { |
3454eb73 | 3890 | *len = 3; |
90e7678c DC |
3891 | return (AS1 (swap,%0) CR_TAB |
3892 | AS1 (lsr,%0) CR_TAB | |
3893 | AS2 (andi,%0,0x7)); | |
3894 | } | |
3454eb73 | 3895 | *len = 5; |
90e7678c DC |
3896 | return (AS1 (lsr,%0) CR_TAB |
3897 | AS1 (lsr,%0) CR_TAB | |
3898 | AS1 (lsr,%0) CR_TAB | |
3899 | AS1 (lsr,%0) CR_TAB | |
3900 | AS1 (lsr,%0)); | |
3454eb73 | 3901 | |
90e7678c | 3902 | case 6: |
c4984bad | 3903 | if (test_hard_reg_class (LD_REGS, operands[0])) |
90e7678c | 3904 | { |
3454eb73 | 3905 | *len = 4; |
90e7678c DC |
3906 | return (AS1 (swap,%0) CR_TAB |
3907 | AS1 (lsr,%0) CR_TAB | |
3908 | AS1 (lsr,%0) CR_TAB | |
3909 | AS2 (andi,%0,0x3)); | |
3910 | } | |
3454eb73 | 3911 | *len = 6; |
90e7678c DC |
3912 | return (AS1 (lsr,%0) CR_TAB |
3913 | AS1 (lsr,%0) CR_TAB | |
3914 | AS1 (lsr,%0) CR_TAB | |
3915 | AS1 (lsr,%0) CR_TAB | |
3916 | AS1 (lsr,%0) CR_TAB | |
3917 | AS1 (lsr,%0)); | |
3454eb73 | 3918 | |
90e7678c | 3919 | case 7: |
3454eb73 | 3920 | *len = 3; |
90e7678c DC |
3921 | return (AS1 (rol,%0) CR_TAB |
3922 | AS1 (clr,%0) CR_TAB | |
3923 | AS1 (rol,%0)); | |
3924 | } | |
3925 | } | |
3454eb73 | 3926 | else if (CONSTANT_P (operands[2])) |
c725bd79 | 3927 | fatal_insn ("internal compiler error. Incorrect shift:", insn); |
3454eb73 | 3928 | |
0db7ad3a | 3929 | out_shift_with_cnt (AS1 (lsr,%0), |
afee2a52 | 3930 | insn, operands, len, 1); |
90e7678c DC |
3931 | return ""; |
3932 | } | |
3933 | ||
3934 | /* 16bit logic shift right ((unsigned short)x >> i) */ | |
3935 | ||
5fecfd8d | 3936 | const char * |
269e3795 | 3937 | lshrhi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
3938 | { |
3939 | if (GET_CODE (operands[2]) == CONST_INT) | |
3940 | { | |
afee2a52 MM |
3941 | int scratch = (GET_CODE (PATTERN (insn)) == PARALLEL); |
3942 | int ldi_ok = test_hard_reg_class (LD_REGS, operands[0]); | |
90e7678c | 3943 | int k; |
3454eb73 | 3944 | int *t = len; |
afee2a52 | 3945 | |
90e7678c DC |
3946 | if (!len) |
3947 | len = &k; | |
3454eb73 | 3948 | |
90e7678c DC |
3949 | switch (INTVAL (operands[2])) |
3950 | { | |
a3cf5992 MM |
3951 | default: |
3952 | if (INTVAL (operands[2]) < 16) | |
3953 | break; | |
3954 | ||
3955 | *len = 2; | |
3956 | return (AS1 (clr,%B0) CR_TAB | |
3957 | AS1 (clr,%A0)); | |
3958 | ||
afee2a52 MM |
3959 | case 4: |
3960 | if (optimize_size && scratch) | |
3961 | break; /* 5 */ | |
3962 | if (ldi_ok) | |
3963 | { | |
3964 | *len = 6; | |
3965 | return (AS1 (swap,%B0) CR_TAB | |
3966 | AS1 (swap,%A0) CR_TAB | |
3967 | AS2 (andi,%A0,0x0f) CR_TAB | |
3968 | AS2 (eor,%A0,%B0) CR_TAB | |
3969 | AS2 (andi,%B0,0x0f) CR_TAB | |
3970 | AS2 (eor,%A0,%B0)); | |
3971 | } | |
3972 | if (scratch) | |
3973 | { | |
3974 | *len = 7; | |
3975 | return (AS1 (swap,%B0) CR_TAB | |
3976 | AS1 (swap,%A0) CR_TAB | |
3977 | AS2 (ldi,%3,0x0f) CR_TAB | |
3978 | AS2 (and,%A0,%3) CR_TAB | |
3979 | AS2 (eor,%A0,%B0) CR_TAB | |
3980 | AS2 (and,%B0,%3) CR_TAB | |
3981 | AS2 (eor,%A0,%B0)); | |
3982 | } | |
3983 | break; /* optimize_size ? 6 : 8 */ | |
3984 | ||
3985 | case 5: | |
3986 | if (optimize_size) | |
3987 | break; /* scratch ? 5 : 6 */ | |
3988 | if (ldi_ok) | |
3989 | { | |
3990 | *len = 8; | |
3991 | return (AS1 (lsr,%B0) CR_TAB | |
3992 | AS1 (ror,%A0) CR_TAB | |
3993 | AS1 (swap,%B0) CR_TAB | |
3994 | AS1 (swap,%A0) CR_TAB | |
3995 | AS2 (andi,%A0,0x0f) CR_TAB | |
3996 | AS2 (eor,%A0,%B0) CR_TAB | |
3997 | AS2 (andi,%B0,0x0f) CR_TAB | |
3998 | AS2 (eor,%A0,%B0)); | |
3999 | } | |
4000 | if (scratch) | |
4001 | { | |
4002 | *len = 9; | |
4003 | return (AS1 (lsr,%B0) CR_TAB | |
4004 | AS1 (ror,%A0) CR_TAB | |
4005 | AS1 (swap,%B0) CR_TAB | |
4006 | AS1 (swap,%A0) CR_TAB | |
4007 | AS2 (ldi,%3,0x0f) CR_TAB | |
4008 | AS2 (and,%A0,%3) CR_TAB | |
4009 | AS2 (eor,%A0,%B0) CR_TAB | |
4010 | AS2 (and,%B0,%3) CR_TAB | |
4011 | AS2 (eor,%A0,%B0)); | |
4012 | } | |
4013 | break; /* 10 */ | |
4014 | ||
4015 | case 6: | |
4016 | if (optimize_size) | |
4017 | break; /* scratch ? 5 : 6 */ | |
4018 | *len = 9; | |
4019 | return (AS1 (clr,__tmp_reg__) CR_TAB | |
4020 | AS1 (lsl,%A0) CR_TAB | |
4021 | AS1 (rol,%B0) CR_TAB | |
4022 | AS1 (rol,__tmp_reg__) CR_TAB | |
4023 | AS1 (lsl,%A0) CR_TAB | |
4024 | AS1 (rol,%B0) CR_TAB | |
4025 | AS1 (rol,__tmp_reg__) CR_TAB | |
4026 | AS2 (mov,%A0,%B0) CR_TAB | |
4027 | AS2 (mov,%B0,__tmp_reg__)); | |
adcd8f77 MM |
4028 | |
4029 | case 7: | |
4030 | *len = 5; | |
4031 | return (AS1 (lsl,%A0) CR_TAB | |
4032 | AS2 (mov,%A0,%B0) CR_TAB | |
4033 | AS1 (rol,%A0) CR_TAB | |
4034 | AS2 (sbc,%B0,%B0) CR_TAB | |
4035 | AS1 (neg,%B0)); | |
4036 | ||
90e7678c | 4037 | case 8: |
120b24f7 AS |
4038 | return *len = 2, (AS2 (mov,%A0,%B1) CR_TAB |
4039 | AS1 (clr,%B0)); | |
adcd8f77 MM |
4040 | |
4041 | case 9: | |
4042 | *len = 3; | |
4043 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4044 | AS1 (clr,%B0) CR_TAB | |
4045 | AS1 (lsr,%A0)); | |
4046 | ||
4047 | case 10: | |
4048 | *len = 4; | |
4049 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4050 | AS1 (clr,%B0) CR_TAB | |
4051 | AS1 (lsr,%A0) CR_TAB | |
4052 | AS1 (lsr,%A0)); | |
4053 | ||
4054 | case 11: | |
4055 | *len = 5; | |
4056 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4057 | AS1 (clr,%B0) CR_TAB | |
4058 | AS1 (lsr,%A0) CR_TAB | |
4059 | AS1 (lsr,%A0) CR_TAB | |
4060 | AS1 (lsr,%A0)); | |
4061 | ||
4062 | case 12: | |
afee2a52 | 4063 | if (ldi_ok) |
adcd8f77 MM |
4064 | { |
4065 | *len = 4; | |
4066 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4067 | AS1 (clr,%B0) CR_TAB | |
4068 | AS1 (swap,%A0) CR_TAB | |
4069 | AS2 (andi,%A0,0x0f)); | |
4070 | } | |
afee2a52 MM |
4071 | if (scratch) |
4072 | { | |
4073 | *len = 5; | |
4074 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4075 | AS1 (clr,%B0) CR_TAB | |
4076 | AS1 (swap,%A0) CR_TAB | |
4077 | AS2 (ldi,%3,0x0f) CR_TAB | |
4078 | AS2 (and,%A0,%3)); | |
4079 | } | |
4080 | *len = 6; | |
adcd8f77 MM |
4081 | return (AS2 (mov,%A0,%B0) CR_TAB |
4082 | AS1 (clr,%B0) CR_TAB | |
afee2a52 MM |
4083 | AS1 (lsr,%A0) CR_TAB |
4084 | AS1 (lsr,%A0) CR_TAB | |
4085 | AS1 (lsr,%A0) CR_TAB | |
4086 | AS1 (lsr,%A0)); | |
adcd8f77 MM |
4087 | |
4088 | case 13: | |
afee2a52 | 4089 | if (ldi_ok) |
adcd8f77 MM |
4090 | { |
4091 | *len = 5; | |
4092 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4093 | AS1 (clr,%B0) CR_TAB | |
4094 | AS1 (swap,%A0) CR_TAB | |
4095 | AS1 (lsr,%A0) CR_TAB | |
4096 | AS2 (andi,%A0,0x07)); | |
4097 | } | |
dd6d1f8c | 4098 | if (AVR_HAVE_MUL && scratch) |
adcd8f77 MM |
4099 | { |
4100 | *len = 5; | |
4101 | return (AS2 (ldi,%3,0x08) CR_TAB | |
4102 | AS2 (mul,%B0,%3) CR_TAB | |
4103 | AS2 (mov,%A0,r1) CR_TAB | |
4104 | AS1 (clr,%B0) CR_TAB | |
4105 | AS1 (clr,__zero_reg__)); | |
4106 | } | |
afee2a52 MM |
4107 | if (optimize_size && scratch) |
4108 | break; /* 5 */ | |
4109 | if (scratch) | |
4110 | { | |
4111 | *len = 6; | |
4112 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4113 | AS1 (clr,%B0) CR_TAB | |
4114 | AS1 (swap,%A0) CR_TAB | |
4115 | AS1 (lsr,%A0) CR_TAB | |
4116 | AS2 (ldi,%3,0x07) CR_TAB | |
4117 | AS2 (and,%A0,%3)); | |
4118 | } | |
dd6d1f8c | 4119 | if (AVR_HAVE_MUL) |
afee2a52 MM |
4120 | { |
4121 | *len = 6; | |
4122 | return ("set" CR_TAB | |
4123 | AS2 (bld,r1,3) CR_TAB | |
4124 | AS2 (mul,%B0,r1) CR_TAB | |
4125 | AS2 (mov,%A0,r1) CR_TAB | |
4126 | AS1 (clr,%B0) CR_TAB | |
4127 | AS1 (clr,__zero_reg__)); | |
4128 | } | |
4129 | *len = 7; | |
4130 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4131 | AS1 (clr,%B0) CR_TAB | |
4132 | AS1 (lsr,%A0) CR_TAB | |
4133 | AS1 (lsr,%A0) CR_TAB | |
4134 | AS1 (lsr,%A0) CR_TAB | |
4135 | AS1 (lsr,%A0) CR_TAB | |
4136 | AS1 (lsr,%A0)); | |
adcd8f77 MM |
4137 | |
4138 | case 14: | |
dd6d1f8c | 4139 | if (AVR_HAVE_MUL && ldi_ok) |
afee2a52 MM |
4140 | { |
4141 | *len = 5; | |
4142 | return (AS2 (ldi,%A0,0x04) CR_TAB | |
4143 | AS2 (mul,%B0,%A0) CR_TAB | |
4144 | AS2 (mov,%A0,r1) CR_TAB | |
4145 | AS1 (clr,%B0) CR_TAB | |
4146 | AS1 (clr,__zero_reg__)); | |
4147 | } | |
dd6d1f8c | 4148 | if (AVR_HAVE_MUL && scratch) |
adcd8f77 MM |
4149 | { |
4150 | *len = 5; | |
4151 | return (AS2 (ldi,%3,0x04) CR_TAB | |
4152 | AS2 (mul,%B0,%3) CR_TAB | |
4153 | AS2 (mov,%A0,r1) CR_TAB | |
4154 | AS1 (clr,%B0) CR_TAB | |
4155 | AS1 (clr,__zero_reg__)); | |
4156 | } | |
afee2a52 MM |
4157 | if (optimize_size && ldi_ok) |
4158 | { | |
4159 | *len = 5; | |
4160 | return (AS2 (mov,%A0,%B0) CR_TAB | |
4161 | AS2 (ldi,%B0,6) "\n1:\t" | |
4162 | AS1 (lsr,%A0) CR_TAB | |
4163 | AS1 (dec,%B0) CR_TAB | |
4164 | AS1 (brne,1b)); | |
4165 | } | |
4166 | if (optimize_size && scratch) | |
4167 | break; /* 5 */ | |
4168 | *len = 6; | |
4169 | return (AS1 (clr,%A0) CR_TAB | |
4170 | AS1 (lsl,%B0) CR_TAB | |
4171 | AS1 (rol,%A0) CR_TAB | |
4172 | AS1 (lsl,%B0) CR_TAB | |
4173 | AS1 (rol,%A0) CR_TAB | |
4174 | AS1 (clr,%B0)); | |
adcd8f77 | 4175 | |
28e801e2 | 4176 | case 15: |
3454eb73 | 4177 | *len = 4; |
afee2a52 MM |
4178 | return (AS1 (clr,%A0) CR_TAB |
4179 | AS1 (lsl,%B0) CR_TAB | |
4180 | AS1 (rol,%A0) CR_TAB | |
3454eb73 | 4181 | AS1 (clr,%B0)); |
90e7678c | 4182 | } |
adcd8f77 | 4183 | len = t; |
90e7678c | 4184 | } |
afee2a52 MM |
4185 | out_shift_with_cnt ((AS1 (lsr,%B0) CR_TAB |
4186 | AS1 (ror,%A0)), | |
4187 | insn, operands, len, 2); | |
90e7678c DC |
4188 | return ""; |
4189 | } | |
4190 | ||
4191 | /* 32bit logic shift right ((unsigned int)x >> i) */ | |
4192 | ||
5fecfd8d | 4193 | const char * |
269e3795 | 4194 | lshrsi3_out (rtx insn, rtx operands[], int *len) |
90e7678c DC |
4195 | { |
4196 | if (GET_CODE (operands[2]) == CONST_INT) | |
4197 | { | |
4198 | int k; | |
3454eb73 DC |
4199 | int *t = len; |
4200 | ||
90e7678c DC |
4201 | if (!len) |
4202 | len = &k; | |
3454eb73 | 4203 | |
90e7678c DC |
4204 | switch (INTVAL (operands[2])) |
4205 | { | |
a3cf5992 MM |
4206 | default: |
4207 | if (INTVAL (operands[2]) < 32) | |
4208 | break; | |
4209 | ||
4301ec4f | 4210 | if (AVR_HAVE_MOVW) |
a3cf5992 MM |
4211 | return *len = 3, (AS1 (clr,%D0) CR_TAB |
4212 | AS1 (clr,%C0) CR_TAB | |
4213 | AS2 (movw,%A0,%C0)); | |
4214 | *len = 4; | |
4215 | return (AS1 (clr,%D0) CR_TAB | |
4216 | AS1 (clr,%C0) CR_TAB | |
4217 | AS1 (clr,%B0) CR_TAB | |
4218 | AS1 (clr,%A0)); | |
4219 | ||
90e7678c DC |
4220 | case 8: |
4221 | { | |
4222 | int reg0 = true_regnum (operands[0]); | |
4223 | int reg1 = true_regnum (operands[1]); | |
3454eb73 | 4224 | *len = 4; |
90e7678c DC |
4225 | if (reg0 <= reg1) |
4226 | return (AS2 (mov,%A0,%B1) CR_TAB | |
4227 | AS2 (mov,%B0,%C1) CR_TAB | |
4228 | AS2 (mov,%C0,%D1) CR_TAB | |
4229 | AS1 (clr,%D0)); | |
90e7678c DC |
4230 | else |
4231 | return (AS1 (clr,%D0) CR_TAB | |
4232 | AS2 (mov,%C0,%D1) CR_TAB | |
4233 | AS2 (mov,%B0,%C1) CR_TAB | |
4234 | AS2 (mov,%A0,%B1)); | |
4235 | } | |
3454eb73 | 4236 | |
90e7678c DC |
4237 | case 16: |
4238 | { | |
4239 | int reg0 = true_regnum (operands[0]); | |
4240 | int reg1 = true_regnum (operands[1]); | |
120b24f7 AS |
4241 | |
4242 | if (reg0 == reg1 + 2) | |
90e7678c DC |
4243 | return *len = 2, (AS1 (clr,%C0) CR_TAB |
4244 | AS1 (clr,%D0)); | |
120b24f7 AS |
4245 | if (AVR_HAVE_MOVW) |
4246 | return *len = 3, (AS2 (movw,%A0,%C1) CR_TAB | |
4247 | AS1 (clr,%C0) CR_TAB | |
4248 | AS1 (clr,%D0)); | |
90e7678c | 4249 | else |
120b24f7 AS |
4250 | return *len = 4, (AS2 (mov,%B0,%D1) CR_TAB |
4251 | AS2 (mov,%A0,%C1) CR_TAB | |
4252 | AS1 (clr,%C0) CR_TAB | |
4253 | AS1 (clr,%D0)); | |
90e7678c | 4254 | } |
3454eb73 | 4255 | |
90e7678c | 4256 | case 24: |
120b24f7 AS |
4257 | return *len = 4, (AS2 (mov,%A0,%D1) CR_TAB |
4258 | AS1 (clr,%B0) CR_TAB | |
4259 | AS1 (clr,%C0) CR_TAB | |
4260 | AS1 (clr,%D0)); | |
adcd8f77 MM |
4261 | |
4262 | case 31: | |
4263 | *len = 6; | |
4264 | return (AS1 (clr,%A0) CR_TAB | |
4265 | AS2 (sbrc,%D0,7) CR_TAB | |
4266 | AS1 (inc,%A0) CR_TAB | |
4267 | AS1 (clr,%B0) CR_TAB | |
4268 | AS1 (clr,%C0) CR_TAB | |
4269 | AS1 (clr,%D0)); | |
90e7678c | 4270 | } |
adcd8f77 | 4271 | len = t; |
90e7678c | 4272 | } |
afee2a52 MM |
4273 | out_shift_with_cnt ((AS1 (lsr,%D0) CR_TAB |
4274 | AS1 (ror,%C0) CR_TAB | |
4275 | AS1 (ror,%B0) CR_TAB | |
4276 | AS1 (ror,%A0)), | |
4277 | insn, operands, len, 4); | |
90e7678c DC |
4278 | return ""; |
4279 | } | |
4280 | ||
4281 | /* Modifies the length assigned to instruction INSN | |
4282 | LEN is the initially computed length of the insn. */ | |
4283 | ||
4284 | int | |
269e3795 | 4285 | adjust_insn_length (rtx insn, int len) |
90e7678c DC |
4286 | { |
4287 | rtx patt = PATTERN (insn); | |
4288 | rtx set; | |
155b14a8 | 4289 | |
90e7678c DC |
4290 | if (GET_CODE (patt) == SET) |
4291 | { | |
4292 | rtx op[10]; | |
4293 | op[1] = SET_SRC (patt); | |
4294 | op[0] = SET_DEST (patt); | |
6bec29c9 DC |
4295 | if (general_operand (op[1], VOIDmode) |
4296 | && general_operand (op[0], VOIDmode)) | |
4297 | { | |
4298 | switch (GET_MODE (op[0])) | |
4299 | { | |
4300 | case QImode: | |
4301 | output_movqi (insn, op, &len); | |
4302 | break; | |
4303 | case HImode: | |
4304 | output_movhi (insn, op, &len); | |
4305 | break; | |
4306 | case SImode: | |
4307 | case SFmode: | |
4308 | output_movsisf (insn, op, &len); | |
4309 | break; | |
4310 | default: | |
4311 | break; | |
4312 | } | |
4313 | } | |
90e7678c DC |
4314 | else if (op[0] == cc0_rtx && REG_P (op[1])) |
4315 | { | |
4316 | switch (GET_MODE (op[1])) | |
4317 | { | |
4318 | case HImode: out_tsthi (insn,&len); break; | |
4319 | case SImode: out_tstsi (insn,&len); break; | |
4320 | default: break; | |
4321 | } | |
4322 | } | |
4323 | else if (GET_CODE (op[1]) == AND) | |
4324 | { | |
4325 | if (GET_CODE (XEXP (op[1],1)) == CONST_INT) | |
4326 | { | |
4327 | HOST_WIDE_INT mask = INTVAL (XEXP (op[1],1)); | |
4328 | if (GET_MODE (op[1]) == SImode) | |
4329 | len = (((mask & 0xff) != 0xff) | |
4330 | + ((mask & 0xff00) != 0xff00) | |
11f9ed1a KG |
4331 | + ((mask & 0xff0000L) != 0xff0000L) |
4332 | + ((mask & 0xff000000L) != 0xff000000L)); | |
90e7678c DC |
4333 | else if (GET_MODE (op[1]) == HImode) |
4334 | len = (((mask & 0xff) != 0xff) | |
4335 | + ((mask & 0xff00) != 0xff00)); | |
4336 | } | |
4337 | } | |
4338 | else if (GET_CODE (op[1]) == IOR) | |
4339 | { | |
4340 | if (GET_CODE (XEXP (op[1],1)) == CONST_INT) | |
4341 | { | |
4342 | HOST_WIDE_INT mask = INTVAL (XEXP (op[1],1)); | |
4343 | if (GET_MODE (op[1]) == SImode) | |
5fecfd8d MM |
4344 | len = (((mask & 0xff) != 0) |
4345 | + ((mask & 0xff00) != 0) | |
11f9ed1a KG |
4346 | + ((mask & 0xff0000L) != 0) |
4347 | + ((mask & 0xff000000L) != 0)); | |
90e7678c | 4348 | else if (GET_MODE (op[1]) == HImode) |
5fecfd8d MM |
4349 | len = (((mask & 0xff) != 0) |
4350 | + ((mask & 0xff00) != 0)); | |
90e7678c DC |
4351 | } |
4352 | } | |
4353 | } | |
4354 | set = single_set (insn); | |
4355 | if (set) | |
4356 | { | |
4357 | rtx op[10]; | |
155b14a8 | 4358 | |
90e7678c DC |
4359 | op[1] = SET_SRC (set); |
4360 | op[0] = SET_DEST (set); | |
155b14a8 DC |
4361 | |
4362 | if (GET_CODE (patt) == PARALLEL | |
4363 | && general_operand (op[1], VOIDmode) | |
4364 | && general_operand (op[0], VOIDmode)) | |
4365 | { | |
4366 | if (XVECLEN (patt, 0) == 2) | |
4367 | op[2] = XVECEXP (patt, 0, 1); | |
4368 | ||
4369 | switch (GET_MODE (op[0])) | |
4370 | { | |
4371 | case QImode: | |
4372 | len = 2; | |
4373 | break; | |
4374 | case HImode: | |
4375 | output_reload_inhi (insn, op, &len); | |
4376 | break; | |
4377 | case SImode: | |
4378 | case SFmode: | |
4379 | output_reload_insisf (insn, op, &len); | |
4380 | break; | |
4381 | default: | |
4382 | break; | |
4383 | } | |
4384 | } | |
4385 | else if (GET_CODE (op[1]) == ASHIFT | |
90e7678c DC |
4386 | || GET_CODE (op[1]) == ASHIFTRT |
4387 | || GET_CODE (op[1]) == LSHIFTRT) | |
4388 | { | |
4389 | rtx ops[10]; | |
4390 | ops[0] = op[0]; | |
4391 | ops[1] = XEXP (op[1],0); | |
4392 | ops[2] = XEXP (op[1],1); | |
4393 | switch (GET_CODE (op[1])) | |
4394 | { | |
4395 | case ASHIFT: | |
4396 | switch (GET_MODE (op[0])) | |
4397 | { | |
4398 | case QImode: ashlqi3_out (insn,ops,&len); break; | |
4399 | case HImode: ashlhi3_out (insn,ops,&len); break; | |
4400 | case SImode: ashlsi3_out (insn,ops,&len); break; | |
4401 | default: break; | |
4402 | } | |
4403 | break; | |
4404 | case ASHIFTRT: | |
4405 | switch (GET_MODE (op[0])) | |
4406 | { | |
4407 | case QImode: ashrqi3_out (insn,ops,&len); break; | |
4408 | case HImode: ashrhi3_out (insn,ops,&len); break; | |
4409 | case SImode: ashrsi3_out (insn,ops,&len); break; | |
4410 | default: break; | |
4411 | } | |
4412 | break; | |
4413 | case LSHIFTRT: | |
4414 | switch (GET_MODE (op[0])) | |
4415 | { | |
4416 | case QImode: lshrqi3_out (insn,ops,&len); break; | |
4417 | case HImode: lshrhi3_out (insn,ops,&len); break; | |
4418 | case SImode: lshrsi3_out (insn,ops,&len); break; | |
4419 | default: break; | |
4420 | } | |
4421 | break; | |
4422 | default: | |
4423 | break; | |
4424 | } | |
4425 | } | |
4426 | } | |
4427 | return len; | |
4428 | } | |
4429 | ||
d6b4baa4 | 4430 | /* Return nonzero if register REG dead after INSN. */ |
90e7678c DC |
4431 | |
4432 | int | |
269e3795 | 4433 | reg_unused_after (rtx insn, rtx reg) |
90e7678c | 4434 | { |
6bec29c9 | 4435 | return (dead_or_set_p (insn, reg) |
90e7678c DC |
4436 | || (REG_P(reg) && _reg_unused_after (insn, reg))); |
4437 | } | |
4438 | ||
825dda42 | 4439 | /* Return nonzero if REG is not used after INSN. |
90e7678c DC |
4440 | We assume REG is a reload reg, and therefore does |
4441 | not live past labels. It may live past calls or jumps though. */ | |
4442 | ||
4443 | int | |
269e3795 | 4444 | _reg_unused_after (rtx insn, rtx reg) |
90e7678c DC |
4445 | { |
4446 | enum rtx_code code; | |
4447 | rtx set; | |
4448 | ||
4449 | /* If the reg is set by this instruction, then it is safe for our | |
4450 | case. Disregard the case where this is a store to memory, since | |
4451 | we are checking a register used in the store address. */ | |
4452 | set = single_set (insn); | |
4453 | if (set && GET_CODE (SET_DEST (set)) != MEM | |
4454 | && reg_overlap_mentioned_p (reg, SET_DEST (set))) | |
4455 | return 1; | |
4456 | ||
4457 | while ((insn = NEXT_INSN (insn))) | |
4458 | { | |
ec8e098d | 4459 | rtx set; |
90e7678c DC |
4460 | code = GET_CODE (insn); |
4461 | ||
4462 | #if 0 | |
4463 | /* If this is a label that existed before reload, then the register | |
4464 | if dead here. However, if this is a label added by reorg, then | |
4465 | the register may still be live here. We can't tell the difference, | |
4466 | so we just ignore labels completely. */ | |
4467 | if (code == CODE_LABEL) | |
4468 | return 1; | |
4469 | /* else */ | |
4470 | #endif | |
4471 | ||
ec8e098d PB |
4472 | if (!INSN_P (insn)) |
4473 | continue; | |
4474 | ||
90e7678c DC |
4475 | if (code == JUMP_INSN) |
4476 | return 0; | |
4477 | ||
4478 | /* If this is a sequence, we must handle them all at once. | |
4479 | We could have for instance a call that sets the target register, | |
e03f5d43 | 4480 | and an insn in a delay slot that uses the register. In this case, |
90e7678c DC |
4481 | we must return 0. */ |
4482 | else if (code == INSN && GET_CODE (PATTERN (insn)) == SEQUENCE) | |
4483 | { | |
4484 | int i; | |
4485 | int retval = 0; | |
4486 | ||
4487 | for (i = 0; i < XVECLEN (PATTERN (insn), 0); i++) | |
4488 | { | |
4489 | rtx this_insn = XVECEXP (PATTERN (insn), 0, i); | |
4490 | rtx set = single_set (this_insn); | |
4491 | ||
4492 | if (GET_CODE (this_insn) == CALL_INSN) | |
4493 | code = CALL_INSN; | |
4494 | else if (GET_CODE (this_insn) == JUMP_INSN) | |
4495 | { | |
4496 | if (INSN_ANNULLED_BRANCH_P (this_insn)) | |
4497 | return 0; | |
4498 | code = JUMP_INSN; | |
4499 | } | |
4500 | ||
4501 | if (set && reg_overlap_mentioned_p (reg, SET_SRC (set))) | |
4502 | return 0; | |
4503 | if (set && reg_overlap_mentioned_p (reg, SET_DEST (set))) | |
4504 | { | |
4505 | if (GET_CODE (SET_DEST (set)) != MEM) | |
4506 | retval = 1; | |
4507 | else | |
4508 | return 0; | |
4509 | } | |
4510 | if (set == 0 | |
4511 | && reg_overlap_mentioned_p (reg, PATTERN (this_insn))) | |
4512 | return 0; | |
4513 | } | |
4514 | if (retval == 1) | |
4515 | return 1; | |
4516 | else if (code == JUMP_INSN) | |
4517 | return 0; | |
4518 | } | |
4519 | ||
4520 | if (code == CALL_INSN) | |
4521 | { | |
4522 | rtx tem; | |
4523 | for (tem = CALL_INSN_FUNCTION_USAGE (insn); tem; tem = XEXP (tem, 1)) | |
4524 | if (GET_CODE (XEXP (tem, 0)) == USE | |
4525 | && REG_P (XEXP (XEXP (tem, 0), 0)) | |
4526 | && reg_overlap_mentioned_p (reg, XEXP (XEXP (tem, 0), 0))) | |
4527 | return 0; | |
4528 | if (call_used_regs[REGNO (reg)]) | |
4529 | return 1; | |
4530 | } | |
4531 | ||
ec8e098d | 4532 | set = single_set (insn); |
90e7678c | 4533 | |
ec8e098d PB |
4534 | if (set && reg_overlap_mentioned_p (reg, SET_SRC (set))) |
4535 | return 0; | |
4536 | if (set && reg_overlap_mentioned_p (reg, SET_DEST (set))) | |
4537 | return GET_CODE (SET_DEST (set)) != MEM; | |
4538 | if (set == 0 && reg_overlap_mentioned_p (reg, PATTERN (insn))) | |
4539 | return 0; | |
90e7678c DC |
4540 | } |
4541 | return 1; | |
4542 | } | |
4543 | ||
301d03af RS |
4544 | /* Target hook for assembling integer objects. The AVR version needs |
4545 | special handling for references to certain labels. */ | |
90e7678c | 4546 | |
301d03af | 4547 | static bool |
269e3795 | 4548 | avr_assemble_integer (rtx x, unsigned int size, int aligned_p) |
90e7678c | 4549 | { |
301d03af | 4550 | if (size == POINTER_SIZE / BITS_PER_UNIT && aligned_p |
74b66b3c | 4551 | && ((GET_CODE (x) == SYMBOL_REF && SYMBOL_REF_FUNCTION_P (x)) |
301d03af | 4552 | || GET_CODE (x) == LABEL_REF)) |
90e7678c | 4553 | { |
693092fb | 4554 | fputs ("\t.word\tgs(", asm_out_file); |
301d03af RS |
4555 | output_addr_const (asm_out_file, x); |
4556 | fputs (")\n", asm_out_file); | |
4557 | return true; | |
90e7678c | 4558 | } |
301d03af | 4559 | return default_assemble_integer (x, size, aligned_p); |
90e7678c DC |
4560 | } |
4561 | ||
90e7678c DC |
4562 | /* The routine used to output NUL terminated strings. We use a special |
4563 | version of this for most svr4 targets because doing so makes the | |
4564 | generated assembly code more compact (and thus faster to assemble) | |
4565 | as well as more readable, especially for targets like the i386 | |
4566 | (where the only alternative is to output character sequences as | |
d6b4baa4 | 4567 | comma separated lists of numbers). */ |
90e7678c DC |
4568 | |
4569 | void | |
269e3795 | 4570 | gas_output_limited_string(FILE *file, const char *str) |
90e7678c | 4571 | { |
586de218 | 4572 | const unsigned char *_limited_str = (const unsigned char *) str; |
90e7678c | 4573 | unsigned ch; |
8202cda0 | 4574 | fprintf (file, "%s\"", STRING_ASM_OP); |
90e7678c DC |
4575 | for (; (ch = *_limited_str); _limited_str++) |
4576 | { | |
4577 | int escape; | |
4578 | switch (escape = ESCAPES[ch]) | |
4579 | { | |
4580 | case 0: | |
4581 | putc (ch, file); | |
4582 | break; | |
4583 | case 1: | |
4584 | fprintf (file, "\\%03o", ch); | |
4585 | break; | |
4586 | default: | |
4587 | putc ('\\', file); | |
4588 | putc (escape, file); | |
4589 | break; | |
4590 | } | |
4591 | } | |
4592 | fprintf (file, "\"\n"); | |
4593 | } | |
4594 | ||
4595 | /* The routine used to output sequences of byte values. We use a special | |
4596 | version of this for most svr4 targets because doing so makes the | |
4597 | generated assembly code more compact (and thus faster to assemble) | |
4598 | as well as more readable. Note that if we find subparts of the | |
4599 | character sequence which end with NUL (and which are shorter than | |
4600 | STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ | |
4601 | ||
4602 | void | |
269e3795 | 4603 | gas_output_ascii(FILE *file, const char *str, size_t length) |
90e7678c | 4604 | { |
5fecfd8d MM |
4605 | const unsigned char *_ascii_bytes = (const unsigned char *) str; |
4606 | const unsigned char *limit = _ascii_bytes + length; | |
90e7678c DC |
4607 | unsigned bytes_in_chunk = 0; |
4608 | for (; _ascii_bytes < limit; _ascii_bytes++) | |
4609 | { | |
5fecfd8d | 4610 | const unsigned char *p; |
90e7678c DC |
4611 | if (bytes_in_chunk >= 60) |
4612 | { | |
4613 | fprintf (file, "\"\n"); | |
4614 | bytes_in_chunk = 0; | |
4615 | } | |
4616 | for (p = _ascii_bytes; p < limit && *p != '\0'; p++) | |
4617 | continue; | |
4618 | if (p < limit && (p - _ascii_bytes) <= (signed)STRING_LIMIT) | |
4619 | { | |
4620 | if (bytes_in_chunk > 0) | |
4621 | { | |
4622 | fprintf (file, "\"\n"); | |
4623 | bytes_in_chunk = 0; | |
4624 | } | |
586de218 | 4625 | gas_output_limited_string (file, (const char*)_ascii_bytes); |
90e7678c DC |
4626 | _ascii_bytes = p; |
4627 | } | |
4628 | else | |
4629 | { | |
4630 | int escape; | |
4631 | unsigned ch; | |
4632 | if (bytes_in_chunk == 0) | |
4633 | fprintf (file, "\t.ascii\t\""); | |
4634 | switch (escape = ESCAPES[ch = *_ascii_bytes]) | |
4635 | { | |
4636 | case 0: | |
4637 | putc (ch, file); | |
4638 | bytes_in_chunk++; | |
4639 | break; | |
4640 | case 1: | |
4641 | fprintf (file, "\\%03o", ch); | |
4642 | bytes_in_chunk += 4; | |
4643 | break; | |
4644 | default: | |
4645 | putc ('\\', file); | |
4646 | putc (escape, file); | |
4647 | bytes_in_chunk += 2; | |
4648 | break; | |
4649 | } | |
4650 | } | |
4651 | } | |
4652 | if (bytes_in_chunk > 0) | |
4653 | fprintf (file, "\"\n"); | |
4654 | } | |
4655 | ||
4656 | /* Return value is nonzero if pseudos that have been | |
4657 | assigned to registers of class CLASS would likely be spilled | |
4658 | because registers of CLASS are needed for spill registers. */ | |
4659 | ||
4660 | enum reg_class | |
269e3795 | 4661 | class_likely_spilled_p (int c) |
90e7678c DC |
4662 | { |
4663 | return (c != ALL_REGS && c != ADDW_REGS); | |
4664 | } | |
4665 | ||
91d231cb | 4666 | /* Valid attributes: |
90e7678c DC |
4667 | progmem - put data to program memory; |
4668 | signal - make a function to be hardware interrupt. After function | |
c4984bad | 4669 | prologue interrupts are disabled; |
90e7678c | 4670 | interrupt - make a function to be hardware interrupt. After function |
c4984bad | 4671 | prologue interrupts are enabled; |
91d231cb | 4672 | naked - don't generate function prologue/epilogue and `ret' command. |
90e7678c | 4673 | |
91d231cb JM |
4674 | Only `progmem' attribute valid for type. */ |
4675 | ||
4676 | const struct attribute_spec avr_attribute_table[] = | |
90e7678c | 4677 | { |
91d231cb JM |
4678 | /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ |
4679 | { "progmem", 0, 0, false, false, false, avr_handle_progmem_attribute }, | |
4680 | { "signal", 0, 0, true, false, false, avr_handle_fndecl_attribute }, | |
4681 | { "interrupt", 0, 0, true, false, false, avr_handle_fndecl_attribute }, | |
44190aed | 4682 | { "naked", 0, 0, false, true, true, avr_handle_fntype_attribute }, |
96ac4c9b | 4683 | { "OS_task", 0, 0, false, true, true, avr_handle_fntype_attribute }, |
9b678d96 | 4684 | { "OS_main", 0, 0, false, true, true, avr_handle_fntype_attribute }, |
91d231cb JM |
4685 | { NULL, 0, 0, false, false, false, NULL } |
4686 | }; | |
90e7678c | 4687 | |
91d231cb JM |
4688 | /* Handle a "progmem" attribute; arguments as in |
4689 | struct attribute_spec.handler. */ | |
4690 | static tree | |
269e3795 SB |
4691 | avr_handle_progmem_attribute (tree *node, tree name, |
4692 | tree args ATTRIBUTE_UNUSED, | |
4693 | int flags ATTRIBUTE_UNUSED, | |
4694 | bool *no_add_attrs) | |
91d231cb JM |
4695 | { |
4696 | if (DECL_P (*node)) | |
90e7678c | 4697 | { |
b47cae3d MM |
4698 | if (TREE_CODE (*node) == TYPE_DECL) |
4699 | { | |
4700 | /* This is really a decl attribute, not a type attribute, | |
4701 | but try to handle it for GCC 3.0 backwards compatibility. */ | |
4702 | ||
4703 | tree type = TREE_TYPE (*node); | |
4704 | tree attr = tree_cons (name, args, TYPE_ATTRIBUTES (type)); | |
4705 | tree newtype = build_type_attribute_variant (type, attr); | |
4706 | ||
4707 | TYPE_MAIN_VARIANT (newtype) = TYPE_MAIN_VARIANT (type); | |
4708 | TREE_TYPE (*node) = newtype; | |
4709 | *no_add_attrs = true; | |
4710 | } | |
4711 | else if (TREE_STATIC (*node) || DECL_EXTERNAL (*node)) | |
90e7678c | 4712 | { |
91d231cb JM |
4713 | if (DECL_INITIAL (*node) == NULL_TREE && !DECL_EXTERNAL (*node)) |
4714 | { | |
d4ee4d25 | 4715 | warning (0, "only initialized variables can be placed into " |
c725bd79 | 4716 | "program memory area"); |
91d231cb JM |
4717 | *no_add_attrs = true; |
4718 | } | |
4719 | } | |
4720 | else | |
4721 | { | |
5c498b10 DD |
4722 | warning (OPT_Wattributes, "%qs attribute ignored", |
4723 | IDENTIFIER_POINTER (name)); | |
91d231cb | 4724 | *no_add_attrs = true; |
90e7678c | 4725 | } |
90e7678c | 4726 | } |
91d231cb JM |
4727 | |
4728 | return NULL_TREE; | |
90e7678c DC |
4729 | } |
4730 | ||
91d231cb JM |
4731 | /* Handle an attribute requiring a FUNCTION_DECL; arguments as in |
4732 | struct attribute_spec.handler. */ | |
269e3795 | 4733 | |
91d231cb | 4734 | static tree |
269e3795 SB |
4735 | avr_handle_fndecl_attribute (tree *node, tree name, |
4736 | tree args ATTRIBUTE_UNUSED, | |
4737 | int flags ATTRIBUTE_UNUSED, | |
4738 | bool *no_add_attrs) | |
91d231cb JM |
4739 | { |
4740 | if (TREE_CODE (*node) != FUNCTION_DECL) | |
4741 | { | |
5c498b10 | 4742 | warning (OPT_Wattributes, "%qs attribute only applies to functions", |
91d231cb JM |
4743 | IDENTIFIER_POINTER (name)); |
4744 | *no_add_attrs = true; | |
4745 | } | |
97e45d9e TR |
4746 | else |
4747 | { | |
f9ca0dee | 4748 | const char *func_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (*node)); |
97e45d9e TR |
4749 | const char *attr = IDENTIFIER_POINTER (name); |
4750 | ||
4751 | /* If the function has the 'signal' or 'interrupt' attribute, test to | |
4752 | make sure that the name of the function is "__vector_NN" so as to | |
4753 | catch when the user misspells the interrupt vector name. */ | |
4754 | ||
4755 | if (strncmp (attr, "interrupt", strlen ("interrupt")) == 0) | |
4756 | { | |
4757 | if (strncmp (func_name, "__vector", strlen ("__vector")) != 0) | |
4758 | { | |
c85ce869 | 4759 | warning (0, "%qs appears to be a misspelled interrupt handler", |
97e45d9e TR |
4760 | func_name); |
4761 | } | |
4762 | } | |
4763 | else if (strncmp (attr, "signal", strlen ("signal")) == 0) | |
4764 | { | |
4765 | if (strncmp (func_name, "__vector", strlen ("__vector")) != 0) | |
4766 | { | |
c85ce869 | 4767 | warning (0, "%qs appears to be a misspelled signal handler", |
97e45d9e TR |
4768 | func_name); |
4769 | } | |
4770 | } | |
4771 | } | |
91d231cb JM |
4772 | |
4773 | return NULL_TREE; | |
4774 | } | |
90e7678c | 4775 | |
44190aed AS |
4776 | static tree |
4777 | avr_handle_fntype_attribute (tree *node, tree name, | |
4778 | tree args ATTRIBUTE_UNUSED, | |
4779 | int flags ATTRIBUTE_UNUSED, | |
4780 | bool *no_add_attrs) | |
4781 | { | |
4782 | if (TREE_CODE (*node) != FUNCTION_TYPE) | |
4783 | { | |
4784 | warning (OPT_Wattributes, "%qs attribute only applies to functions", | |
4785 | IDENTIFIER_POINTER (name)); | |
4786 | *no_add_attrs = true; | |
4787 | } | |
4788 | ||
4789 | return NULL_TREE; | |
4790 | } | |
4791 | ||
90e7678c | 4792 | /* Look for attribute `progmem' in DECL |
c4984bad | 4793 | if found return 1, otherwise 0. */ |
90e7678c DC |
4794 | |
4795 | int | |
427ee360 | 4796 | avr_progmem_p (tree decl, tree attributes) |
90e7678c DC |
4797 | { |
4798 | tree a; | |
4799 | ||
4800 | if (TREE_CODE (decl) != VAR_DECL) | |
4801 | return 0; | |
4802 | ||
4803 | if (NULL_TREE | |
427ee360 | 4804 | != lookup_attribute ("progmem", attributes)) |
90e7678c DC |
4805 | return 1; |
4806 | ||
4807 | a=decl; | |
4808 | do | |
4809 | a = TREE_TYPE(a); | |
4810 | while (TREE_CODE (a) == ARRAY_TYPE); | |
4811 | ||
89741abb MM |
4812 | if (a == error_mark_node) |
4813 | return 0; | |
4814 | ||
90e7678c DC |
4815 | if (NULL_TREE != lookup_attribute ("progmem", TYPE_ATTRIBUTES (a))) |
4816 | return 1; | |
4817 | ||
4818 | return 0; | |
4819 | } | |
4820 | ||
74b66b3c RH |
4821 | /* Add the section attribute if the variable is in progmem. */ |
4822 | ||
fb49053f | 4823 | static void |
269e3795 | 4824 | avr_insert_attributes (tree node, tree *attributes) |
90e7678c | 4825 | { |
74b66b3c RH |
4826 | if (TREE_CODE (node) == VAR_DECL |
4827 | && (TREE_STATIC (node) || DECL_EXTERNAL (node)) | |
427ee360 | 4828 | && avr_progmem_p (node, *attributes)) |
90e7678c | 4829 | { |
74b66b3c RH |
4830 | static const char dsec[] = ".progmem.data"; |
4831 | *attributes = tree_cons (get_identifier ("section"), | |
4832 | build_tree_list (NULL, build_string (strlen (dsec), dsec)), | |
4833 | *attributes); | |
4834 | ||
4835 | /* ??? This seems sketchy. Why can't the user declare the | |
4836 | thing const in the first place? */ | |
4837 | TREE_READONLY (node) = 1; | |
90e7678c | 4838 | } |
772c5265 | 4839 | } |
90e7678c | 4840 | |
d6b5193b RS |
4841 | /* A get_unnamed_section callback for switching to progmem_section. */ |
4842 | ||
4843 | static void | |
4844 | avr_output_progmem_section_asm_op (const void *arg ATTRIBUTE_UNUSED) | |
4845 | { | |
4846 | fprintf (asm_out_file, | |
4847 | "\t.section .progmem.gcc_sw_table, \"%s\", @progbits\n", | |
5dc77808 | 4848 | AVR_HAVE_JMP_CALL ? "a" : "ax"); |
d6b5193b RS |
4849 | /* Should already be aligned, this is just to be safe if it isn't. */ |
4850 | fprintf (asm_out_file, "\t.p2align 1\n"); | |
4851 | } | |
4852 | ||
4853 | /* Implement TARGET_ASM_INIT_SECTIONS. */ | |
4854 | ||
4855 | static void | |
4856 | avr_asm_init_sections (void) | |
4857 | { | |
5dc77808 | 4858 | progmem_section = get_unnamed_section (AVR_HAVE_JMP_CALL ? 0 : SECTION_CODE, |
d6b5193b RS |
4859 | avr_output_progmem_section_asm_op, |
4860 | NULL); | |
4861 | readonly_data_section = data_section; | |
4862 | } | |
4863 | ||
c16e5a35 | 4864 | static unsigned int |
269e3795 | 4865 | avr_section_type_flags (tree decl, const char *name, int reloc) |
c16e5a35 MM |
4866 | { |
4867 | unsigned int flags = default_section_type_flags (decl, name, reloc); | |
4868 | ||
4869 | if (strncmp (name, ".noinit", 7) == 0) | |
4870 | { | |
4871 | if (decl && TREE_CODE (decl) == VAR_DECL | |
4872 | && DECL_INITIAL (decl) == NULL_TREE) | |
4873 | flags |= SECTION_BSS; /* @nobits */ | |
4874 | else | |
d4ee4d25 | 4875 | warning (0, "only uninitialized variables can be placed in the " |
c16e5a35 MM |
4876 | ".noinit section"); |
4877 | } | |
4878 | ||
4879 | return flags; | |
4880 | } | |
4881 | ||
1bc7c5b6 ZW |
4882 | /* Outputs some appropriate text to go at the start of an assembler |
4883 | file. */ | |
90e7678c | 4884 | |
1bc7c5b6 | 4885 | static void |
269e3795 | 4886 | avr_file_start (void) |
90e7678c | 4887 | { |
470a4c97 | 4888 | if (avr_current_arch->asm_only) |
9e637a26 | 4889 | error ("MCU %qs supported for assembler only", avr_mcu_name); |
bcb6a2be | 4890 | |
1bc7c5b6 ZW |
4891 | default_file_start (); |
4892 | ||
4301ec4f | 4893 | /* fprintf (asm_out_file, "\t.arch %s\n", avr_mcu_name);*/ |
90e7678c DC |
4894 | fputs ("__SREG__ = 0x3f\n" |
4895 | "__SP_H__ = 0x3e\n" | |
1bc7c5b6 | 4896 | "__SP_L__ = 0x3d\n", asm_out_file); |
90e7678c | 4897 | |
368256d8 | 4898 | fputs ("__tmp_reg__ = 0\n" |
1bc7c5b6 | 4899 | "__zero_reg__ = 1\n", asm_out_file); |
9af145ae MM |
4900 | |
4901 | /* FIXME: output these only if there is anything in the .data / .bss | |
4902 | sections - some code size could be saved by not linking in the | |
4903 | initialization code from libgcc if one or both sections are empty. */ | |
1bc7c5b6 ZW |
4904 | fputs ("\t.global __do_copy_data\n", asm_out_file); |
4905 | fputs ("\t.global __do_clear_bss\n", asm_out_file); | |
90e7678c DC |
4906 | } |
4907 | ||
4908 | /* Outputs to the stdio stream FILE some | |
4909 | appropriate text to go at the end of an assembler file. */ | |
4910 | ||
a5fe455b | 4911 | static void |
269e3795 | 4912 | avr_file_end (void) |
90e7678c | 4913 | { |
90e7678c DC |
4914 | } |
4915 | ||
4916 | /* Choose the order in which to allocate hard registers for | |
4917 | pseudo-registers local to a basic block. | |
4918 | ||
4919 | Store the desired register order in the array `reg_alloc_order'. | |
4920 | Element 0 should be the register to allocate first; element 1, the | |
4921 | next register; and so on. */ | |
4922 | ||
4923 | void | |
269e3795 | 4924 | order_regs_for_local_alloc (void) |
90e7678c DC |
4925 | { |
4926 | unsigned int i; | |
8b60264b | 4927 | static const int order_0[] = { |
90e7678c DC |
4928 | 24,25, |
4929 | 18,19, | |
4930 | 20,21, | |
4931 | 22,23, | |
4932 | 30,31, | |
4933 | 26,27, | |
4934 | 28,29, | |
4935 | 17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2, | |
4936 | 0,1, | |
4937 | 32,33,34,35 | |
4938 | }; | |
8b60264b | 4939 | static const int order_1[] = { |
90e7678c DC |
4940 | 18,19, |
4941 | 20,21, | |
4942 | 22,23, | |
4943 | 24,25, | |
4944 | 30,31, | |
4945 | 26,27, | |
4946 | 28,29, | |
4947 | 17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2, | |
4948 | 0,1, | |
4949 | 32,33,34,35 | |
4950 | }; | |
8b60264b | 4951 | static const int order_2[] = { |
90e7678c DC |
4952 | 25,24, |
4953 | 23,22, | |
4954 | 21,20, | |
4955 | 19,18, | |
4956 | 30,31, | |
4957 | 26,27, | |
4958 | 28,29, | |
4959 | 17,16, | |
4960 | 15,14,13,12,11,10,9,8,7,6,5,4,3,2, | |
4961 | 1,0, | |
4962 | 32,33,34,35 | |
4963 | }; | |
4964 | ||
8b60264b KG |
4965 | const int *order = (TARGET_ORDER_1 ? order_1 : |
4966 | TARGET_ORDER_2 ? order_2 : | |
4967 | order_0); | |
5b47282c | 4968 | for (i=0; i < ARRAY_SIZE (order_0); ++i) |
90e7678c DC |
4969 | reg_alloc_order[i] = order[i]; |
4970 | } | |
4971 | ||
8f2bf9f1 RS |
4972 | |
4973 | /* Mutually recursive subroutine of avr_rtx_cost for calculating the | |
4974 | cost of an RTX operand given its context. X is the rtx of the | |
4975 | operand, MODE is its mode, and OUTER is the rtx_code of this | |
4976 | operand's parent operator. */ | |
90e7678c | 4977 | |
3c50106f | 4978 | static int |
8f2bf9f1 | 4979 | avr_operand_rtx_cost (rtx x, enum machine_mode mode, enum rtx_code outer) |
90e7678c | 4980 | { |
8f2bf9f1 RS |
4981 | enum rtx_code code = GET_CODE (x); |
4982 | int total; | |
4983 | ||
90e7678c DC |
4984 | switch (code) |
4985 | { | |
8f2bf9f1 RS |
4986 | case REG: |
4987 | case SUBREG: | |
4988 | return 0; | |
4989 | ||
90e7678c | 4990 | case CONST_INT: |
8f2bf9f1 RS |
4991 | case CONST_DOUBLE: |
4992 | return COSTS_N_INSNS (GET_MODE_SIZE (mode)); | |
4993 | ||
90e7678c DC |
4994 | default: |
4995 | break; | |
4996 | } | |
8f2bf9f1 RS |
4997 | |
4998 | total = 0; | |
4999 | avr_rtx_costs (x, code, outer, &total); | |
5000 | return total; | |
90e7678c DC |
5001 | } |
5002 | ||
8f2bf9f1 RS |
5003 | /* The AVR backend's rtx_cost function. X is rtx expression whose cost |
5004 | is to be calculated. Return true if the complete cost has been | |
5005 | computed, and false if subexpressions should be scanned. In either | |
5006 | case, *TOTAL contains the cost result. */ | |
5007 | ||
3c50106f | 5008 | static bool |
9a7fd67a | 5009 | avr_rtx_costs (rtx x, int code, int outer_code ATTRIBUTE_UNUSED, int *total) |
3c50106f | 5010 | { |
8f2bf9f1 RS |
5011 | enum machine_mode mode = GET_MODE (x); |
5012 | HOST_WIDE_INT val; | |
3c50106f RH |
5013 | |
5014 | switch (code) | |
5015 | { | |
5016 | case CONST_INT: | |
8f2bf9f1 RS |
5017 | case CONST_DOUBLE: |
5018 | /* Immediate constants are as cheap as registers. */ | |
5019 | *total = 0; | |
5020 | return true; | |
5021 | ||
5022 | case MEM: | |
5023 | case CONST: | |
5024 | case LABEL_REF: | |
5025 | case SYMBOL_REF: | |
5026 | *total = COSTS_N_INSNS (GET_MODE_SIZE (mode)); | |
5027 | return true; | |
5028 | ||
5029 | case NEG: | |
5030 | switch (mode) | |
3c50106f | 5031 | { |
8f2bf9f1 RS |
5032 | case QImode: |
5033 | case SFmode: | |
5034 | *total = COSTS_N_INSNS (1); | |
5035 | break; | |
5036 | ||
5037 | case HImode: | |
5038 | *total = COSTS_N_INSNS (3); | |
5039 | break; | |
5040 | ||
5041 | case SImode: | |
5042 | *total = COSTS_N_INSNS (7); | |
5043 | break; | |
5044 | ||
5045 | default: | |
5046 | return false; | |
3c50106f | 5047 | } |
8f2bf9f1 RS |
5048 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); |
5049 | return true; | |
5050 | ||
5051 | case ABS: | |
5052 | switch (mode) | |
3c50106f | 5053 | { |
8f2bf9f1 RS |
5054 | case QImode: |
5055 | case SFmode: | |
5056 | *total = COSTS_N_INSNS (1); | |
5057 | break; | |
5058 | ||
5059 | default: | |
5060 | return false; | |
3c50106f | 5061 | } |
8f2bf9f1 RS |
5062 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); |
5063 | return true; | |
3c50106f | 5064 | |
8f2bf9f1 RS |
5065 | case NOT: |
5066 | *total = COSTS_N_INSNS (GET_MODE_SIZE (mode)); | |
5067 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
3c50106f RH |
5068 | return true; |
5069 | ||
8f2bf9f1 RS |
5070 | case ZERO_EXTEND: |
5071 | *total = COSTS_N_INSNS (GET_MODE_SIZE (mode) | |
5072 | - GET_MODE_SIZE (GET_MODE (XEXP (x, 0)))); | |
5073 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5074 | return true; | |
5075 | ||
5076 | case SIGN_EXTEND: | |
5077 | *total = COSTS_N_INSNS (GET_MODE_SIZE (mode) + 2 | |
5078 | - GET_MODE_SIZE (GET_MODE (XEXP (x, 0)))); | |
5079 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5080 | return true; | |
5081 | ||
5082 | case PLUS: | |
5083 | switch (mode) | |
5084 | { | |
5085 | case QImode: | |
5086 | *total = COSTS_N_INSNS (1); | |
5087 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5088 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5089 | break; | |
5090 | ||
5091 | case HImode: | |
5092 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5093 | { | |
5094 | *total = COSTS_N_INSNS (2); | |
5095 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5096 | } | |
5097 | else if (INTVAL (XEXP (x, 1)) >= -63 && INTVAL (XEXP (x, 1)) <= 63) | |
5098 | *total = COSTS_N_INSNS (1); | |
5099 | else | |
5100 | *total = COSTS_N_INSNS (2); | |
5101 | break; | |
5102 | ||
5103 | case SImode: | |
5104 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5105 | { | |
5106 | *total = COSTS_N_INSNS (4); | |
5107 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5108 | } | |
5109 | else if (INTVAL (XEXP (x, 1)) >= -63 && INTVAL (XEXP (x, 1)) <= 63) | |
5110 | *total = COSTS_N_INSNS (1); | |
5111 | else | |
5112 | *total = COSTS_N_INSNS (4); | |
5113 | break; | |
5114 | ||
5115 | default: | |
5116 | return false; | |
5117 | } | |
5118 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5119 | return true; | |
5120 | ||
5121 | case MINUS: | |
5122 | case AND: | |
5123 | case IOR: | |
5124 | *total = COSTS_N_INSNS (GET_MODE_SIZE (mode)); | |
5125 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5126 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5127 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5128 | return true; | |
5129 | ||
5130 | case XOR: | |
5131 | *total = COSTS_N_INSNS (GET_MODE_SIZE (mode)); | |
5132 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5133 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5134 | return true; | |
5135 | ||
5136 | case MULT: | |
5137 | switch (mode) | |
5138 | { | |
5139 | case QImode: | |
dd6d1f8c | 5140 | if (AVR_HAVE_MUL) |
8f2bf9f1 RS |
5141 | *total = COSTS_N_INSNS (optimize_size ? 3 : 4); |
5142 | else if (optimize_size) | |
5dc77808 | 5143 | *total = COSTS_N_INSNS (AVR_HAVE_JMP_CALL ? 2 : 1); |
8f2bf9f1 RS |
5144 | else |
5145 | return false; | |
c8bbabf2 | 5146 | break; |
8f2bf9f1 RS |
5147 | |
5148 | case HImode: | |
dd6d1f8c | 5149 | if (AVR_HAVE_MUL) |
8f2bf9f1 RS |
5150 | *total = COSTS_N_INSNS (optimize_size ? 7 : 10); |
5151 | else if (optimize_size) | |
5dc77808 | 5152 | *total = COSTS_N_INSNS (AVR_HAVE_JMP_CALL ? 2 : 1); |
8f2bf9f1 RS |
5153 | else |
5154 | return false; | |
c8bbabf2 | 5155 | break; |
8f2bf9f1 RS |
5156 | |
5157 | default: | |
5158 | return false; | |
5159 | } | |
5160 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5161 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5162 | return true; | |
5163 | ||
5164 | case DIV: | |
5165 | case MOD: | |
5166 | case UDIV: | |
5167 | case UMOD: | |
5168 | if (optimize_size) | |
5dc77808 | 5169 | *total = COSTS_N_INSNS (AVR_HAVE_JMP_CALL ? 2 : 1); |
8f2bf9f1 RS |
5170 | else |
5171 | return false; | |
5172 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5173 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5174 | return true; | |
5175 | ||
5176 | case ASHIFT: | |
5177 | switch (mode) | |
5178 | { | |
5179 | case QImode: | |
5180 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5181 | { | |
5182 | *total = COSTS_N_INSNS (optimize_size ? 4 : 17); | |
5183 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5184 | } | |
5185 | else | |
5186 | { | |
5187 | val = INTVAL (XEXP (x, 1)); | |
5188 | if (val == 7) | |
5189 | *total = COSTS_N_INSNS (3); | |
5190 | else if (val >= 0 && val <= 7) | |
5191 | *total = COSTS_N_INSNS (val); | |
5192 | else | |
5193 | *total = COSTS_N_INSNS (1); | |
5194 | } | |
5195 | break; | |
5196 | ||
5197 | case HImode: | |
5198 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5199 | { | |
5200 | *total = COSTS_N_INSNS (optimize_size ? 5 : 41); | |
5201 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5202 | } | |
5203 | else | |
5204 | switch (INTVAL (XEXP (x, 1))) | |
5205 | { | |
5206 | case 0: | |
5207 | *total = 0; | |
5208 | break; | |
5209 | case 1: | |
5210 | case 8: | |
5211 | *total = COSTS_N_INSNS (2); | |
5212 | break; | |
5213 | case 9: | |
5214 | *total = COSTS_N_INSNS (3); | |
5215 | break; | |
5216 | case 2: | |
5217 | case 3: | |
5218 | case 10: | |
5219 | case 15: | |
5220 | *total = COSTS_N_INSNS (4); | |
5221 | break; | |
5222 | case 7: | |
5223 | case 11: | |
5224 | case 12: | |
5225 | *total = COSTS_N_INSNS (5); | |
5226 | break; | |
5227 | case 4: | |
5228 | *total = COSTS_N_INSNS (optimize_size ? 5 : 8); | |
5229 | break; | |
5230 | case 6: | |
5231 | *total = COSTS_N_INSNS (optimize_size ? 5 : 9); | |
5232 | break; | |
5233 | case 5: | |
5234 | *total = COSTS_N_INSNS (optimize_size ? 5 : 10); | |
5235 | break; | |
5236 | default: | |
5237 | *total = COSTS_N_INSNS (optimize_size ? 5 : 41); | |
5238 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5239 | } | |
5240 | break; | |
5241 | ||
5242 | case SImode: | |
5243 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5244 | { | |
5245 | *total = COSTS_N_INSNS (optimize_size ? 7 : 113); | |
5246 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5247 | } | |
5248 | else | |
5249 | switch (INTVAL (XEXP (x, 1))) | |
5250 | { | |
5251 | case 0: | |
5252 | *total = 0; | |
5253 | break; | |
5254 | case 24: | |
5255 | *total = COSTS_N_INSNS (3); | |
5256 | break; | |
5257 | case 1: | |
5258 | case 8: | |
5259 | case 16: | |
5260 | *total = COSTS_N_INSNS (4); | |
5261 | break; | |
5262 | case 31: | |
5263 | *total = COSTS_N_INSNS (6); | |
5264 | break; | |
5265 | case 2: | |
5266 | *total = COSTS_N_INSNS (optimize_size ? 7 : 8); | |
5267 | break; | |
5268 | default: | |
5269 | *total = COSTS_N_INSNS (optimize_size ? 7 : 113); | |
5270 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5271 | } | |
5272 | break; | |
5273 | ||
5274 | default: | |
5275 | return false; | |
5276 | } | |
5277 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5278 | return true; | |
5279 | ||
5280 | case ASHIFTRT: | |
5281 | switch (mode) | |
5282 | { | |
5283 | case QImode: | |
5284 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5285 | { | |
5286 | *total = COSTS_N_INSNS (optimize_size ? 4 : 17); | |
5287 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5288 | } | |
5289 | else | |
5290 | { | |
5291 | val = INTVAL (XEXP (x, 1)); | |
5292 | if (val == 6) | |
5293 | *total = COSTS_N_INSNS (4); | |
5294 | else if (val == 7) | |
5295 | *total = COSTS_N_INSNS (2); | |
5296 | else if (val >= 0 && val <= 7) | |
5297 | *total = COSTS_N_INSNS (val); | |
5298 | else | |
5299 | *total = COSTS_N_INSNS (1); | |
5300 | } | |
5301 | break; | |
5302 | ||
5303 | case HImode: | |
5304 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5305 | { | |
5306 | *total = COSTS_N_INSNS (optimize_size ? 5 : 41); | |
5307 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5308 | } | |
5309 | else | |
5310 | switch (INTVAL (XEXP (x, 1))) | |
5311 | { | |
5312 | case 0: | |
5313 | *total = 0; | |
5314 | break; | |
5315 | case 1: | |
5316 | *total = COSTS_N_INSNS (2); | |
5317 | break; | |
5318 | case 15: | |
5319 | *total = COSTS_N_INSNS (3); | |
5320 | break; | |
5321 | case 2: | |
5322 | case 7: | |
5323 | case 8: | |
5324 | case 9: | |
5325 | *total = COSTS_N_INSNS (4); | |
5326 | break; | |
5327 | case 10: | |
5328 | case 14: | |
5329 | *total = COSTS_N_INSNS (5); | |
5330 | break; | |
5331 | case 11: | |
5332 | *total = COSTS_N_INSNS (optimize_size ? 5 : 6); | |
5333 | break; | |
5334 | case 12: | |
5335 | *total = COSTS_N_INSNS (optimize_size ? 5 : 7); | |
5336 | break; | |
5337 | case 6: | |
5338 | case 13: | |
5339 | *total = COSTS_N_INSNS (optimize_size ? 5 : 8); | |
5340 | break; | |
5341 | default: | |
5342 | *total = COSTS_N_INSNS (optimize_size ? 5 : 41); | |
5343 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5344 | } | |
5345 | break; | |
5346 | ||
5347 | case SImode: | |
5348 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5349 | { | |
5350 | *total = COSTS_N_INSNS (optimize_size ? 7 : 113); | |
5351 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5352 | } | |
5353 | else | |
5354 | switch (INTVAL (XEXP (x, 1))) | |
5355 | { | |
5356 | case 0: | |
5357 | *total = 0; | |
5358 | break; | |
5359 | case 1: | |
5360 | *total = COSTS_N_INSNS (4); | |
5361 | break; | |
5362 | case 8: | |
5363 | case 16: | |
5364 | case 24: | |
5365 | *total = COSTS_N_INSNS (6); | |
5366 | break; | |
5367 | case 2: | |
5368 | *total = COSTS_N_INSNS (optimize_size ? 7 : 8); | |
5369 | break; | |
5370 | case 31: | |
4301ec4f | 5371 | *total = COSTS_N_INSNS (AVR_HAVE_MOVW ? 4 : 5); |
8f2bf9f1 RS |
5372 | break; |
5373 | default: | |
5374 | *total = COSTS_N_INSNS (optimize_size ? 7 : 113); | |
5375 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5376 | } | |
5377 | break; | |
5378 | ||
5379 | default: | |
5380 | return false; | |
5381 | } | |
5382 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5383 | return true; | |
5384 | ||
5385 | case LSHIFTRT: | |
5386 | switch (mode) | |
5387 | { | |
5388 | case QImode: | |
5389 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5390 | { | |
5391 | *total = COSTS_N_INSNS (optimize_size ? 4 : 17); | |
5392 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5393 | } | |
5394 | else | |
5395 | { | |
5396 | val = INTVAL (XEXP (x, 1)); | |
5397 | if (val == 7) | |
5398 | *total = COSTS_N_INSNS (3); | |
5399 | else if (val >= 0 && val <= 7) | |
5400 | *total = COSTS_N_INSNS (val); | |
5401 | else | |
5402 | *total = COSTS_N_INSNS (1); | |
5403 | } | |
5404 | break; | |
5405 | ||
5406 | case HImode: | |
5407 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5408 | { | |
5409 | *total = COSTS_N_INSNS (optimize_size ? 5 : 41); | |
5410 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5411 | } | |
5412 | else | |
5413 | switch (INTVAL (XEXP (x, 1))) | |
5414 | { | |
5415 | case 0: | |
5416 | *total = 0; | |
5417 | break; | |
5418 | case 1: | |
5419 | case 8: | |
5420 | *total = COSTS_N_INSNS (2); | |
5421 | break; | |
5422 | case 9: | |
5423 | *total = COSTS_N_INSNS (3); | |
5424 | break; | |
5425 | case 2: | |
5426 | case 10: | |
5427 | case 15: | |
5428 | *total = COSTS_N_INSNS (4); | |
5429 | break; | |
5430 | case 7: | |
5431 | case 11: | |
5432 | *total = COSTS_N_INSNS (5); | |
5433 | break; | |
5434 | case 3: | |
5435 | case 12: | |
5436 | case 13: | |
5437 | case 14: | |
5438 | *total = COSTS_N_INSNS (optimize_size ? 5 : 6); | |
5439 | break; | |
5440 | case 4: | |
5441 | *total = COSTS_N_INSNS (optimize_size ? 5 : 7); | |
5442 | break; | |
5443 | case 5: | |
5444 | case 6: | |
5445 | *total = COSTS_N_INSNS (optimize_size ? 5 : 9); | |
5446 | break; | |
5447 | default: | |
5448 | *total = COSTS_N_INSNS (optimize_size ? 5 : 41); | |
5449 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5450 | } | |
5451 | break; | |
5452 | ||
5453 | case SImode: | |
5454 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5455 | { | |
5456 | *total = COSTS_N_INSNS (optimize_size ? 7 : 113); | |
5457 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5458 | } | |
5459 | else | |
5460 | switch (INTVAL (XEXP (x, 1))) | |
5461 | { | |
5462 | case 0: | |
5463 | *total = 0; | |
5464 | break; | |
5465 | case 1: | |
5466 | *total = COSTS_N_INSNS (4); | |
5467 | break; | |
5468 | case 2: | |
5469 | *total = COSTS_N_INSNS (optimize_size ? 7 : 8); | |
5470 | break; | |
5471 | case 8: | |
5472 | case 16: | |
5473 | case 24: | |
5474 | *total = COSTS_N_INSNS (4); | |
5475 | break; | |
5476 | case 31: | |
5477 | *total = COSTS_N_INSNS (6); | |
5478 | break; | |
5479 | default: | |
5480 | *total = COSTS_N_INSNS (optimize_size ? 7 : 113); | |
5481 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5482 | } | |
5483 | break; | |
5484 | ||
5485 | default: | |
5486 | return false; | |
5487 | } | |
5488 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); | |
5489 | return true; | |
5490 | ||
5491 | case COMPARE: | |
5492 | switch (GET_MODE (XEXP (x, 0))) | |
3c50106f | 5493 | { |
8f2bf9f1 RS |
5494 | case QImode: |
5495 | *total = COSTS_N_INSNS (1); | |
5496 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5497 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5498 | break; | |
5499 | ||
5500 | case HImode: | |
5501 | *total = COSTS_N_INSNS (2); | |
5502 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5503 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5504 | else if (INTVAL (XEXP (x, 1)) != 0) | |
5505 | *total += COSTS_N_INSNS (1); | |
5506 | break; | |
5507 | ||
5508 | case SImode: | |
5509 | *total = COSTS_N_INSNS (4); | |
5510 | if (GET_CODE (XEXP (x, 1)) != CONST_INT) | |
5511 | *total += avr_operand_rtx_cost (XEXP (x, 1), mode, code); | |
5512 | else if (INTVAL (XEXP (x, 1)) != 0) | |
5513 | *total += COSTS_N_INSNS (3); | |
5514 | break; | |
5515 | ||
5516 | default: | |
5517 | return false; | |
3c50106f | 5518 | } |
8f2bf9f1 RS |
5519 | *total += avr_operand_rtx_cost (XEXP (x, 0), mode, code); |
5520 | return true; | |
5521 | ||
5522 | default: | |
5523 | break; | |
3c50106f | 5524 | } |
8f2bf9f1 | 5525 | return false; |
3c50106f RH |
5526 | } |
5527 | ||
2c338472 | 5528 | /* Calculate the cost of a memory address. */ |
90e7678c | 5529 | |
dcefdf67 | 5530 | static int |
269e3795 | 5531 | avr_address_cost (rtx x) |
90e7678c DC |
5532 | { |
5533 | if (GET_CODE (x) == PLUS | |
5534 | && GET_CODE (XEXP (x,1)) == CONST_INT | |
5535 | && (REG_P (XEXP (x,0)) || GET_CODE (XEXP (x,0)) == SUBREG) | |
5536 | && INTVAL (XEXP (x,1)) >= 61) | |
5537 | return 18; | |
5538 | if (CONSTANT_ADDRESS_P (x)) | |
5fecfd8d | 5539 | { |
e6b69d0e | 5540 | if (optimize > 0 && io_address_operand (x, QImode)) |
5fecfd8d MM |
5541 | return 2; |
5542 | return 4; | |
5543 | } | |
90e7678c DC |
5544 | return 4; |
5545 | } | |
5546 | ||
2d67effa DC |
5547 | /* Test for extra memory constraint 'Q'. |
5548 | It's a memory address based on Y or Z pointer with valid displacement. */ | |
90e7678c DC |
5549 | |
5550 | int | |
2d67effa | 5551 | extra_constraint_Q (rtx x) |
90e7678c | 5552 | { |
2d67effa DC |
5553 | if (GET_CODE (XEXP (x,0)) == PLUS |
5554 | && REG_P (XEXP (XEXP (x,0), 0)) | |
5555 | && GET_CODE (XEXP (XEXP (x,0), 1)) == CONST_INT | |
5556 | && (INTVAL (XEXP (XEXP (x,0), 1)) | |
5557 | <= MAX_LD_OFFSET (GET_MODE (x)))) | |
90e7678c | 5558 | { |
2d67effa DC |
5559 | rtx xx = XEXP (XEXP (x,0), 0); |
5560 | int regno = REGNO (xx); | |
5561 | if (TARGET_ALL_DEBUG) | |
90e7678c | 5562 | { |
2d67effa DC |
5563 | fprintf (stderr, ("extra_constraint:\n" |
5564 | "reload_completed: %d\n" | |
5565 | "reload_in_progress: %d\n"), | |
5566 | reload_completed, reload_in_progress); | |
5567 | debug_rtx (x); | |
90e7678c | 5568 | } |
2d67effa DC |
5569 | if (regno >= FIRST_PSEUDO_REGISTER) |
5570 | return 1; /* allocate pseudos */ | |
5571 | else if (regno == REG_Z || regno == REG_Y) | |
5572 | return 1; /* strictly check */ | |
5573 | else if (xx == frame_pointer_rtx | |
5574 | || xx == arg_pointer_rtx) | |
5575 | return 1; /* XXX frame & arg pointer checks */ | |
90e7678c DC |
5576 | } |
5577 | return 0; | |
5578 | } | |
5579 | ||
2c338472 | 5580 | /* Convert condition code CONDITION to the valid AVR condition code. */ |
90e7678c DC |
5581 | |
5582 | RTX_CODE | |
269e3795 | 5583 | avr_normalize_condition (RTX_CODE condition) |
90e7678c DC |
5584 | { |
5585 | switch (condition) | |
5586 | { | |
5587 | case GT: | |
5588 | return GE; | |
5589 | case GTU: | |
5590 | return GEU; | |
5591 | case LE: | |
5592 | return LT; | |
5593 | case LEU: | |
5594 | return LTU; | |
5595 | default: | |
25b9575b | 5596 | gcc_unreachable (); |
90e7678c DC |
5597 | } |
5598 | } | |
5599 | ||
cef1ccd6 | 5600 | /* This function optimizes conditional jumps. */ |
90e7678c | 5601 | |
18dbd950 | 5602 | static void |
269e3795 | 5603 | avr_reorg (void) |
90e7678c DC |
5604 | { |
5605 | rtx insn, pattern; | |
90e7678c | 5606 | |
18dbd950 | 5607 | for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) |
90e7678c | 5608 | { |
33f77355 DC |
5609 | if (! (GET_CODE (insn) == INSN |
5610 | || GET_CODE (insn) == CALL_INSN | |
5611 | || GET_CODE (insn) == JUMP_INSN) | |
90e7678c DC |
5612 | || !single_set (insn)) |
5613 | continue; | |
5614 | ||
5615 | pattern = PATTERN (insn); | |
5616 | ||
90e7678c DC |
5617 | if (GET_CODE (pattern) == PARALLEL) |
5618 | pattern = XVECEXP (pattern, 0, 0); | |
5619 | if (GET_CODE (pattern) == SET | |
5620 | && SET_DEST (pattern) == cc0_rtx | |
5621 | && compare_diff_p (insn)) | |
5622 | { | |
5623 | if (GET_CODE (SET_SRC (pattern)) == COMPARE) | |
5624 | { | |
2c338472 | 5625 | /* Now we work under compare insn. */ |
90e7678c DC |
5626 | |
5627 | pattern = SET_SRC (pattern); | |
5628 | if (true_regnum (XEXP (pattern,0)) >= 0 | |
5629 | && true_regnum (XEXP (pattern,1)) >= 0 ) | |
5630 | { | |
5631 | rtx x = XEXP (pattern,0); | |
5632 | rtx next = next_real_insn (insn); | |
5633 | rtx pat = PATTERN (next); | |
5634 | rtx src = SET_SRC (pat); | |
5635 | rtx t = XEXP (src,0); | |
5636 | PUT_CODE (t, swap_condition (GET_CODE (t))); | |
5637 | XEXP (pattern,0) = XEXP (pattern,1); | |
5638 | XEXP (pattern,1) = x; | |
5639 | INSN_CODE (next) = -1; | |
5640 | } | |
5641 | else if (true_regnum (XEXP (pattern,0)) >= 0 | |
5642 | && GET_CODE (XEXP (pattern,1)) == CONST_INT) | |
5643 | { | |
5644 | rtx x = XEXP (pattern,1); | |
5645 | rtx next = next_real_insn (insn); | |
5646 | rtx pat = PATTERN (next); | |
5647 | rtx src = SET_SRC (pat); | |
5648 | rtx t = XEXP (src,0); | |
651c5ed9 | 5649 | enum machine_mode mode = GET_MODE (XEXP (pattern, 0)); |
90e7678c | 5650 | |
62e4d780 | 5651 | if (avr_simplify_comparison_p (mode, GET_CODE (t), x)) |
90e7678c | 5652 | { |
651c5ed9 | 5653 | XEXP (pattern, 1) = gen_int_mode (INTVAL (x) + 1, mode); |
90e7678c DC |
5654 | PUT_CODE (t, avr_normalize_condition (GET_CODE (t))); |
5655 | INSN_CODE (next) = -1; | |
5656 | INSN_CODE (insn) = -1; | |
5657 | } | |
5658 | } | |
5659 | } | |
5660 | else if (true_regnum (SET_SRC (pattern)) >= 0) | |
5661 | { | |
5662 | /* This is a tst insn */ | |
5663 | rtx next = next_real_insn (insn); | |
5664 | rtx pat = PATTERN (next); | |
5665 | rtx src = SET_SRC (pat); | |
5666 | rtx t = XEXP (src,0); | |
5667 | ||
33f77355 | 5668 | PUT_CODE (t, swap_condition (GET_CODE (t))); |
f1c25d3b KH |
5669 | SET_SRC (pattern) = gen_rtx_NEG (GET_MODE (SET_SRC (pattern)), |
5670 | SET_SRC (pattern)); | |
33f77355 DC |
5671 | INSN_CODE (next) = -1; |
5672 | INSN_CODE (insn) = -1; | |
90e7678c DC |
5673 | } |
5674 | } | |
5675 | } | |
5676 | } | |
5677 | ||
5678 | /* Returns register number for function return value.*/ | |
5679 | ||
5680 | int | |
269e3795 | 5681 | avr_ret_register (void) |
90e7678c DC |
5682 | { |
5683 | return 24; | |
5684 | } | |
5685 | ||
9f5ed61a | 5686 | /* Create an RTX representing the place where a |
90e7678c DC |
5687 | library function returns a value of mode MODE. */ |
5688 | ||
5689 | rtx | |
269e3795 | 5690 | avr_libcall_value (enum machine_mode mode) |
90e7678c DC |
5691 | { |
5692 | int offs = GET_MODE_SIZE (mode); | |
5693 | if (offs < 2) | |
5694 | offs = 2; | |
f1c25d3b | 5695 | return gen_rtx_REG (mode, RET_REGISTER + 2 - offs); |
90e7678c DC |
5696 | } |
5697 | ||
5698 | /* Create an RTX representing the place where a | |
5699 | function returns a value of data type VALTYPE. */ | |
5700 | ||
5701 | rtx | |
586de218 | 5702 | avr_function_value (const_tree type, const_tree func ATTRIBUTE_UNUSED) |
90e7678c | 5703 | { |
3454eb73 | 5704 | unsigned int offs; |
56b871c1 | 5705 | |
90e7678c DC |
5706 | if (TYPE_MODE (type) != BLKmode) |
5707 | return avr_libcall_value (TYPE_MODE (type)); | |
5708 | ||
5709 | offs = int_size_in_bytes (type); | |
5710 | if (offs < 2) | |
5711 | offs = 2; | |
5712 | if (offs > 2 && offs < GET_MODE_SIZE (SImode)) | |
5713 | offs = GET_MODE_SIZE (SImode); | |
5714 | else if (offs > GET_MODE_SIZE (SImode) && offs < GET_MODE_SIZE (DImode)) | |
5715 | offs = GET_MODE_SIZE (DImode); | |
5716 | ||
f1c25d3b | 5717 | return gen_rtx_REG (BLKmode, RET_REGISTER + 2 - offs); |
90e7678c DC |
5718 | } |
5719 | ||
90e7678c DC |
5720 | /* Places additional restrictions on the register class to |
5721 | use when it is necessary to copy value X into a register | |
5722 | in class CLASS. */ | |
5723 | ||
5724 | enum reg_class | |
269e3795 | 5725 | preferred_reload_class (rtx x ATTRIBUTE_UNUSED, enum reg_class class) |
90e7678c | 5726 | { |
90e7678c DC |
5727 | return class; |
5728 | } | |
5729 | ||
28e801e2 | 5730 | int |
269e3795 | 5731 | test_hard_reg_class (enum reg_class class, rtx x) |
28e801e2 DC |
5732 | { |
5733 | int regno = true_regnum (x); | |
5734 | if (regno < 0) | |
5735 | return 0; | |
26af4041 MM |
5736 | |
5737 | if (TEST_HARD_REG_CLASS (class, regno)) | |
5738 | return 1; | |
5739 | ||
5740 | return 0; | |
28e801e2 DC |
5741 | } |
5742 | ||
b58c068a DC |
5743 | |
5744 | int | |
269e3795 | 5745 | jump_over_one_insn_p (rtx insn, rtx dest) |
b58c068a DC |
5746 | { |
5747 | int uid = INSN_UID (GET_CODE (dest) == LABEL_REF | |
5748 | ? XEXP (dest, 0) | |
5749 | : dest); | |
9d98a694 AO |
5750 | int jump_addr = INSN_ADDRESSES (INSN_UID (insn)); |
5751 | int dest_addr = INSN_ADDRESSES (uid); | |
331ca350 | 5752 | return dest_addr - jump_addr == get_attr_length (insn) + 1; |
b58c068a | 5753 | } |
78cf8279 MM |
5754 | |
5755 | /* Returns 1 if a value of mode MODE can be stored starting with hard | |
c4984bad MM |
5756 | register number REGNO. On the enhanced core, anything larger than |
5757 | 1 byte must start in even numbered register for "movw" to work | |
5758 | (this way we don't have to check for odd registers everywhere). */ | |
78cf8279 MM |
5759 | |
5760 | int | |
269e3795 | 5761 | avr_hard_regno_mode_ok (int regno, enum machine_mode mode) |
78cf8279 | 5762 | { |
2cd11105 AS |
5763 | /* Disallow QImode in stack pointer regs. */ |
5764 | if ((regno == REG_SP || regno == (REG_SP + 1)) && mode == QImode) | |
5765 | return 0; | |
5766 | ||
d2ebe27c RS |
5767 | /* The only thing that can go into registers r28:r29 is a Pmode. */ |
5768 | if (regno == REG_Y && mode == Pmode) | |
5769 | return 1; | |
b96c434c | 5770 | |
d2ebe27c RS |
5771 | /* Otherwise disallow all regno/mode combinations that span r28:r29. */ |
5772 | if (regno <= (REG_Y + 1) && (regno + GET_MODE_SIZE (mode)) >= (REG_Y + 1)) | |
678584fc DC |
5773 | return 0; |
5774 | ||
78cf8279 MM |
5775 | if (mode == QImode) |
5776 | return 1; | |
d2ebe27c RS |
5777 | |
5778 | /* Modes larger than QImode occupy consecutive registers. */ | |
5779 | if (regno + GET_MODE_SIZE (mode) > FIRST_PSEUDO_REGISTER) | |
5780 | return 0; | |
5781 | ||
5782 | /* All modes larger than QImode should start in an even register. */ | |
78cf8279 MM |
5783 | return !(regno & 1); |
5784 | } | |
6bec29c9 | 5785 | |
5fecfd8d | 5786 | const char * |
269e3795 | 5787 | output_reload_inhi (rtx insn ATTRIBUTE_UNUSED, rtx *operands, int *len) |
6bec29c9 | 5788 | { |
612105a6 DC |
5789 | int tmp; |
5790 | if (!len) | |
5791 | len = &tmp; | |
5792 | ||
6bec29c9 DC |
5793 | if (GET_CODE (operands[1]) == CONST_INT) |
5794 | { | |
5795 | int val = INTVAL (operands[1]); | |
5796 | if ((val & 0xff) == 0) | |
5797 | { | |
5798 | *len = 3; | |
5799 | return (AS2 (mov,%A0,__zero_reg__) CR_TAB | |
5800 | AS2 (ldi,%2,hi8(%1)) CR_TAB | |
5801 | AS2 (mov,%B0,%2)); | |
5802 | } | |
5803 | else if ((val & 0xff00) == 0) | |
5804 | { | |
5805 | *len = 3; | |
5806 | return (AS2 (ldi,%2,lo8(%1)) CR_TAB | |
5807 | AS2 (mov,%A0,%2) CR_TAB | |
5808 | AS2 (mov,%B0,__zero_reg__)); | |
5809 | } | |
5810 | else if ((val & 0xff) == ((val & 0xff00) >> 8)) | |
5811 | { | |
5812 | *len = 3; | |
5813 | return (AS2 (ldi,%2,lo8(%1)) CR_TAB | |
5814 | AS2 (mov,%A0,%2) CR_TAB | |
5815 | AS2 (mov,%B0,%2)); | |
5816 | } | |
5817 | } | |
5818 | *len = 4; | |
5819 | return (AS2 (ldi,%2,lo8(%1)) CR_TAB | |
5820 | AS2 (mov,%A0,%2) CR_TAB | |
5821 | AS2 (ldi,%2,hi8(%1)) CR_TAB | |
5822 | AS2 (mov,%B0,%2)); | |
5823 | } | |
5824 | ||
5825 | ||
5fecfd8d | 5826 | const char * |
269e3795 | 5827 | output_reload_insisf (rtx insn ATTRIBUTE_UNUSED, rtx *operands, int *len) |
6bec29c9 | 5828 | { |
5fecfd8d MM |
5829 | rtx src = operands[1]; |
5830 | int cnst = (GET_CODE (src) == CONST_INT); | |
5831 | ||
5832 | if (len) | |
5833 | { | |
5834 | if (cnst) | |
5835 | *len = 4 + ((INTVAL (src) & 0xff) != 0) | |
5836 | + ((INTVAL (src) & 0xff00) != 0) | |
5837 | + ((INTVAL (src) & 0xff0000) != 0) | |
11f9ed1a | 5838 | + ((INTVAL (src) & 0xff000000) != 0); |
5fecfd8d MM |
5839 | else |
5840 | *len = 8; | |
5841 | ||
5842 | return ""; | |
5843 | } | |
6bec29c9 | 5844 | |
5fecfd8d | 5845 | if (cnst && ((INTVAL (src) & 0xff) == 0)) |
6bec29c9 DC |
5846 | output_asm_insn (AS2 (mov, %A0, __zero_reg__), operands); |
5847 | else | |
5848 | { | |
5849 | output_asm_insn (AS2 (ldi, %2, lo8(%1)), operands); | |
5850 | output_asm_insn (AS2 (mov, %A0, %2), operands); | |
5851 | } | |
5fecfd8d | 5852 | if (cnst && ((INTVAL (src) & 0xff00) == 0)) |
6bec29c9 DC |
5853 | output_asm_insn (AS2 (mov, %B0, __zero_reg__), operands); |
5854 | else | |
5855 | { | |
5856 | output_asm_insn (AS2 (ldi, %2, hi8(%1)), operands); | |
5857 | output_asm_insn (AS2 (mov, %B0, %2), operands); | |
5858 | } | |
5fecfd8d | 5859 | if (cnst && ((INTVAL (src) & 0xff0000) == 0)) |
6bec29c9 DC |
5860 | output_asm_insn (AS2 (mov, %C0, __zero_reg__), operands); |
5861 | else | |
5862 | { | |
5863 | output_asm_insn (AS2 (ldi, %2, hlo8(%1)), operands); | |
5864 | output_asm_insn (AS2 (mov, %C0, %2), operands); | |
5865 | } | |
11f9ed1a | 5866 | if (cnst && ((INTVAL (src) & 0xff000000) == 0)) |
6bec29c9 DC |
5867 | output_asm_insn (AS2 (mov, %D0, __zero_reg__), operands); |
5868 | else | |
5869 | { | |
5870 | output_asm_insn (AS2 (ldi, %2, hhi8(%1)), operands); | |
5871 | output_asm_insn (AS2 (mov, %D0, %2), operands); | |
5872 | } | |
5873 | return ""; | |
5874 | } | |
afee2a52 MM |
5875 | |
5876 | void | |
269e3795 | 5877 | avr_output_bld (rtx operands[], int bit_nr) |
afee2a52 MM |
5878 | { |
5879 | static char s[] = "bld %A0,0"; | |
5880 | ||
5881 | s[5] = 'A' + (bit_nr >> 3); | |
5882 | s[8] = '0' + (bit_nr & 7); | |
5883 | output_asm_insn (s, operands); | |
5884 | } | |
5885 | ||
e9284adf | 5886 | void |
269e3795 | 5887 | avr_output_addr_vec_elt (FILE *stream, int value) |
e9284adf | 5888 | { |
d6b5193b | 5889 | switch_to_section (progmem_section); |
693092fb BH |
5890 | if (AVR_HAVE_JMP_CALL) |
5891 | fprintf (stream, "\t.word gs(.L%d)\n", value); | |
e9284adf MM |
5892 | else |
5893 | fprintf (stream, "\trjmp .L%d\n", value); | |
e9284adf MM |
5894 | } |
5895 | ||
dcfb1a36 MM |
5896 | /* Returns 1 if SCRATCH are safe to be allocated as a scratch |
5897 | registers (for a define_peephole2) in the current function. */ | |
5898 | ||
5899 | int | |
269e3795 | 5900 | avr_peep2_scratch_safe (rtx scratch) |
dcfb1a36 MM |
5901 | { |
5902 | if ((interrupt_function_p (current_function_decl) | |
5903 | || signal_function_p (current_function_decl)) | |
5904 | && leaf_function_p ()) | |
5905 | { | |
5906 | int first_reg = true_regnum (scratch); | |
5907 | int last_reg = first_reg + GET_MODE_SIZE (GET_MODE (scratch)) - 1; | |
5908 | int reg; | |
5909 | ||
5910 | for (reg = first_reg; reg <= last_reg; reg++) | |
5911 | { | |
6fb5fa3c | 5912 | if (!df_regs_ever_live_p (reg)) |
dcfb1a36 MM |
5913 | return 0; |
5914 | } | |
5915 | } | |
5916 | return 1; | |
5917 | } | |
331ca350 MM |
5918 | |
5919 | /* Output a branch that tests a single bit of a register (QI, HI or SImode) | |
5920 | or memory location in the I/O space (QImode only). | |
5921 | ||
5922 | Operand 0: comparison operator (must be EQ or NE, compare bit to zero). | |
5923 | Operand 1: register operand to test, or CONST_INT memory address. | |
5924 | Operand 2: bit number (for QImode operand) or mask (HImode, SImode). | |
5925 | Operand 3: label to jump to if the test is true. */ | |
5926 | ||
5927 | const char * | |
269e3795 | 5928 | avr_out_sbxx_branch (rtx insn, rtx operands[]) |
331ca350 MM |
5929 | { |
5930 | enum rtx_code comp = GET_CODE (operands[0]); | |
5931 | int long_jump = (get_attr_length (insn) >= 4); | |
5932 | int reverse = long_jump || jump_over_one_insn_p (insn, operands[3]); | |
5933 | ||
5934 | if (comp == GE) | |
5935 | comp = EQ; | |
5936 | else if (comp == LT) | |
5937 | comp = NE; | |
5938 | ||
5939 | if (reverse) | |
5940 | comp = reverse_condition (comp); | |
5941 | ||
5942 | if (GET_CODE (operands[1]) == CONST_INT) | |
5943 | { | |
5944 | if (INTVAL (operands[1]) < 0x40) | |
5945 | { | |
5946 | if (comp == EQ) | |
5947 | output_asm_insn (AS2 (sbis,%1-0x20,%2), operands); | |
5948 | else | |
5949 | output_asm_insn (AS2 (sbic,%1-0x20,%2), operands); | |
5950 | } | |
5951 | else | |
5952 | { | |
5953 | output_asm_insn (AS2 (in,__tmp_reg__,%1-0x20), operands); | |
5954 | if (comp == EQ) | |
5955 | output_asm_insn (AS2 (sbrs,__tmp_reg__,%2), operands); | |
5956 | else | |
5957 | output_asm_insn (AS2 (sbrc,__tmp_reg__,%2), operands); | |
5958 | } | |
5959 | } | |
5960 | else /* GET_CODE (operands[1]) == REG */ | |
5961 | { | |
5962 | if (GET_MODE (operands[1]) == QImode) | |
5963 | { | |
5964 | if (comp == EQ) | |
5965 | output_asm_insn (AS2 (sbrs,%1,%2), operands); | |
5966 | else | |
5967 | output_asm_insn (AS2 (sbrc,%1,%2), operands); | |
5968 | } | |
5969 | else /* HImode or SImode */ | |
5970 | { | |
5971 | static char buf[] = "sbrc %A1,0"; | |
5972 | int bit_nr = exact_log2 (INTVAL (operands[2]) | |
5973 | & GET_MODE_MASK (GET_MODE (operands[1]))); | |
5974 | ||
5975 | buf[3] = (comp == EQ) ? 's' : 'c'; | |
5976 | buf[6] = 'A' + (bit_nr >> 3); | |
5977 | buf[9] = '0' + (bit_nr & 7); | |
5978 | output_asm_insn (buf, operands); | |
5979 | } | |
5980 | } | |
5981 | ||
5982 | if (long_jump) | |
13e8651c | 5983 | return (AS1 (rjmp,.+4) CR_TAB |
331ca350 MM |
5984 | AS1 (jmp,%3)); |
5985 | if (!reverse) | |
5986 | return AS1 (rjmp,%3); | |
5987 | return ""; | |
5988 | } | |
9af145ae | 5989 | |
bd5bd7ac KH |
5990 | /* Worker function for TARGET_ASM_CONSTRUCTOR. */ |
5991 | ||
9af145ae | 5992 | static void |
269e3795 | 5993 | avr_asm_out_ctor (rtx symbol, int priority) |
9af145ae MM |
5994 | { |
5995 | fputs ("\t.global __do_global_ctors\n", asm_out_file); | |
5996 | default_ctor_section_asm_out_constructor (symbol, priority); | |
5997 | } | |
5998 | ||
bd5bd7ac KH |
5999 | /* Worker function for TARGET_ASM_DESTRUCTOR. */ |
6000 | ||
9af145ae | 6001 | static void |
269e3795 | 6002 | avr_asm_out_dtor (rtx symbol, int priority) |
9af145ae MM |
6003 | { |
6004 | fputs ("\t.global __do_global_dtors\n", asm_out_file); | |
6005 | default_dtor_section_asm_out_destructor (symbol, priority); | |
6006 | } | |
6007 | ||
bd5bd7ac KH |
6008 | /* Worker function for TARGET_RETURN_IN_MEMORY. */ |
6009 | ||
b069302c | 6010 | static bool |
586de218 | 6011 | avr_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED) |
b069302c | 6012 | { |
78bc94a2 KH |
6013 | if (TYPE_MODE (type) == BLKmode) |
6014 | { | |
6015 | HOST_WIDE_INT size = int_size_in_bytes (type); | |
6016 | return (size == -1 || size > 8); | |
6017 | } | |
6018 | else | |
6019 | return false; | |
b069302c KH |
6020 | } |
6021 | ||
baac771a | 6022 | #include "gt-avr.h" |