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cee98a59 MM |
1 | /* Subroutines for insn-output.c for MIPS |
2 | Contributed by A. Lichnewsky, lich@inria.inria.fr. | |
3 | Changes by Michael Meissner, meissner@osf.org. | |
147255d8 JW |
4 | 64 bit r4000 support by Ian Lance Taylor, ian@cygnus.com, and |
5 | Brendan Eich, brendan@microunity.com. | |
dd947ed9 | 6 | Copyright (C) 1989, 1990, 1991, 1993, 1994 Free Software Foundation, Inc. |
cee98a59 MM |
7 | |
8 | This file is part of GNU CC. | |
9 | ||
10 | GNU CC is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | GNU CC is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GNU CC; see the file COPYING. If not, write to | |
22 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
23 | ||
147255d8 JW |
24 | /* ??? The TARGET_FP_CALL_32 macros are intended to simulate a 32 bit |
25 | calling convention in 64 bit mode. It doesn't work though, and should | |
26 | be replaced with something better designed. */ | |
27 | ||
cee98a59 MM |
28 | #include "config.h" |
29 | #include "rtl.h" | |
30 | #include "regs.h" | |
31 | #include "hard-reg-set.h" | |
32 | #include "real.h" | |
33 | #include "insn-config.h" | |
34 | #include "conditions.h" | |
35 | #include "insn-flags.h" | |
36 | #include "insn-attr.h" | |
37 | #include "insn-codes.h" | |
38 | #include "recog.h" | |
39 | #include "output.h" | |
40 | ||
41 | #undef MAX /* sys/param.h may also define these */ | |
42 | #undef MIN | |
43 | ||
44 | #include <stdio.h> | |
45 | #include <signal.h> | |
46 | #include <sys/types.h> | |
47 | #include <sys/file.h> | |
48 | #include <ctype.h> | |
49 | #include "tree.h" | |
50 | #include "expr.h" | |
51 | #include "flags.h" | |
52 | ||
53 | #ifndef R_OK | |
54 | #define R_OK 4 | |
55 | #define W_OK 2 | |
56 | #define X_OK 1 | |
57 | #endif | |
58 | ||
9987501f | 59 | #if defined(USG) || defined(NO_STAB_H) |
cee98a59 MM |
60 | #include "gstab.h" /* If doing DBX on sysV, use our own stab.h. */ |
61 | #else | |
62 | #include <stab.h> /* On BSD, use the system's stab.h. */ | |
63 | #endif /* not USG */ | |
64 | ||
65 | #ifdef __GNU_STAB__ | |
66 | #define STAB_CODE_TYPE enum __stab_debug_code | |
67 | #else | |
68 | #define STAB_CODE_TYPE int | |
69 | #endif | |
70 | ||
0fb5ac6f MM |
71 | extern void abort (); |
72 | extern int atoi (); | |
73 | extern char *getenv (); | |
74 | extern char *mktemp (); | |
75 | ||
76 | extern rtx adj_offsettable_operand (); | |
77 | extern rtx copy_to_reg (); | |
78 | extern void error (); | |
79 | extern void fatal (); | |
80 | extern tree lookup_name (); | |
81 | extern void pfatal_with_name (); | |
82 | extern void warning (); | |
83 | ||
cee98a59 | 84 | extern tree current_function_decl; |
0fb5ac6f | 85 | extern FILE *asm_out_file; |
cee98a59 | 86 | |
34b650b3 MM |
87 | /* Enumeration for all of the relational tests, so that we can build |
88 | arrays indexed by the test type, and not worry about the order | |
89 | of EQ, NE, etc. */ | |
90 | ||
91 | enum internal_test { | |
92 | ITEST_EQ, | |
93 | ITEST_NE, | |
94 | ITEST_GT, | |
95 | ITEST_GE, | |
96 | ITEST_LT, | |
97 | ITEST_LE, | |
98 | ITEST_GTU, | |
99 | ITEST_GEU, | |
100 | ITEST_LTU, | |
101 | ITEST_LEU, | |
102 | ITEST_MAX | |
103 | }; | |
104 | ||
cee98a59 MM |
105 | /* Global variables for machine-dependent things. */ |
106 | ||
107 | /* Threshold for data being put into the small data/bss area, instead | |
108 | of the normal data area (references to the small data/bss area take | |
109 | 1 instruction, and use the global pointer, references to the normal | |
110 | data area takes 2 instructions). */ | |
111 | int mips_section_threshold = -1; | |
112 | ||
113 | /* Count the number of .file directives, so that .loc is up to date. */ | |
114 | int num_source_filenames = 0; | |
115 | ||
cee98a59 MM |
116 | /* Count the number of sdb related labels are generated (to find block |
117 | start and end boundaries). */ | |
118 | int sdb_label_count = 0; | |
119 | ||
120 | /* Next label # for each statment for Silicon Graphics IRIS systems. */ | |
121 | int sym_lineno = 0; | |
122 | ||
123 | /* Non-zero if inside of a function, because the stupid MIPS asm can't | |
124 | handle .files inside of functions. */ | |
125 | int inside_function = 0; | |
126 | ||
cee98a59 MM |
127 | /* Files to separate the text and the data output, so that all of the data |
128 | can be emitted before the text, which will mean that the assembler will | |
129 | generate smaller code, based on the global pointer. */ | |
130 | FILE *asm_out_data_file; | |
131 | FILE *asm_out_text_file; | |
132 | ||
133 | /* Linked list of all externals that are to be emitted when optimizing | |
134 | for the global pointer if they haven't been declared by the end of | |
135 | the program with an appropriate .comm or initialization. */ | |
136 | ||
137 | struct extern_list { | |
138 | struct extern_list *next; /* next external */ | |
139 | char *name; /* name of the external */ | |
140 | int size; /* size in bytes */ | |
141 | } *extern_head = 0; | |
142 | ||
cee98a59 MM |
143 | /* Name of the file containing the current function. */ |
144 | char *current_function_file = ""; | |
145 | ||
146 | /* Warning given that Mips ECOFF can't support changing files | |
147 | within a function. */ | |
148 | int file_in_function_warning = FALSE; | |
149 | ||
c831afd5 | 150 | /* Whether to suppress issuing .loc's because the user attempted |
cee98a59 MM |
151 | to change the filename within a function. */ |
152 | int ignore_line_number = FALSE; | |
153 | ||
154 | /* Number of nested .set noreorder, noat, nomacro, and volatile requests. */ | |
155 | int set_noreorder; | |
156 | int set_noat; | |
157 | int set_nomacro; | |
158 | int set_volatile; | |
159 | ||
160 | /* The next branch instruction is a branch likely, not branch normal. */ | |
161 | int mips_branch_likely; | |
162 | ||
163 | /* Count of delay slots and how many are filled. */ | |
164 | int dslots_load_total; | |
165 | int dslots_load_filled; | |
166 | int dslots_jump_total; | |
167 | int dslots_jump_filled; | |
168 | ||
169 | /* # of nops needed by previous insn */ | |
170 | int dslots_number_nops; | |
171 | ||
172 | /* Number of 1/2/3 word references to data items (ie, not jal's). */ | |
173 | int num_refs[3]; | |
174 | ||
175 | /* registers to check for load delay */ | |
176 | rtx mips_load_reg, mips_load_reg2, mips_load_reg3, mips_load_reg4; | |
177 | ||
178 | /* Cached operands, and operator to compare for use in set/branch on | |
179 | condition codes. */ | |
180 | rtx branch_cmp[2]; | |
181 | ||
182 | /* what type of branch to use */ | |
183 | enum cmp_type branch_type; | |
184 | ||
6f3c667f MM |
185 | /* Number of previously seen half-pic pointers and references. */ |
186 | static int prev_half_pic_ptrs = 0; | |
187 | static int prev_half_pic_refs = 0; | |
188 | ||
cee98a59 MM |
189 | /* which cpu are we scheduling for */ |
190 | enum processor_type mips_cpu; | |
191 | ||
192 | /* which instruction set architecture to use. */ | |
193 | int mips_isa; | |
194 | ||
195 | /* Strings to hold which cpu and instruction set architecture to use. */ | |
196 | char *mips_cpu_string; /* for -mcpu=<xxx> */ | |
197 | char *mips_isa_string; /* for -mips{1,2,3} */ | |
198 | ||
ffa9d0b1 | 199 | /* Generating calls to position independent functions? */ |
1d6ce736 | 200 | enum mips_abicalls_type mips_abicalls; |
ffa9d0b1 | 201 | |
147255d8 JW |
202 | /* High and low marks for floating point values which we will accept |
203 | as legitimate constants for LEGITIMATE_CONSTANT_P. These are | |
204 | initialized in override_options. */ | |
205 | REAL_VALUE_TYPE dfhigh, dflow, sfhigh, sflow; | |
206 | ||
cee98a59 MM |
207 | /* Array giving truth value on whether or not a given hard register |
208 | can support a given mode. */ | |
209 | char mips_hard_regno_mode_ok[(int)MAX_MACHINE_MODE][FIRST_PSEUDO_REGISTER]; | |
210 | ||
211 | /* Current frame information calculated by compute_frame_size. */ | |
212 | struct mips_frame_info current_frame_info; | |
213 | ||
214 | /* Zero structure to initialize current_frame_info. */ | |
215 | struct mips_frame_info zero_frame_info; | |
216 | ||
c831afd5 MM |
217 | /* Temporary filename used to buffer .text until end of program |
218 | for -mgpopt. */ | |
219 | static char *temp_filename; | |
220 | ||
92544bdf ILT |
221 | /* Pseudo-reg holding the address of the current function when |
222 | generating embedded PIC code. Created by LEGITIMIZE_ADDRESS, used | |
223 | by mips_finalize_pic if it was created. */ | |
224 | rtx embedded_pic_fnaddr_rtx; | |
225 | ||
cee98a59 MM |
226 | /* List of all MIPS punctuation characters used by print_operand. */ |
227 | char mips_print_operand_punct[256]; | |
228 | ||
229 | /* Map GCC register number to debugger register number. */ | |
230 | int mips_dbx_regno[FIRST_PSEUDO_REGISTER]; | |
231 | ||
232 | /* Buffer to use to enclose a load/store operation with %{ %} to | |
233 | turn on .set volatile. */ | |
234 | static char volatile_buffer[60]; | |
235 | ||
236 | /* Hardware names for the registers. If -mrnames is used, this | |
237 | will be overwritten with mips_sw_reg_names. */ | |
238 | ||
239 | char mips_reg_names[][8] = | |
240 | { | |
241 | "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", | |
242 | "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", | |
243 | "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23", | |
244 | "$24", "$25", "$26", "$27", "$28", "$sp", "$fp", "$31", | |
245 | "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", | |
246 | "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", | |
247 | "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", | |
248 | "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", | |
249 | "hi", "lo", "$fcr31" | |
250 | }; | |
251 | ||
252 | /* Mips software names for the registers, used to overwrite the | |
253 | mips_reg_names array. */ | |
254 | ||
255 | char mips_sw_reg_names[][8] = | |
256 | { | |
147255d8 JW |
257 | "$zero","$at", "$v0", "$v1", "$a0", "$a1", "$a2", "$a3", |
258 | "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", | |
259 | "$s0", "$s1", "$s2", "$s3", "$s4", "$s5", "$s6", "$s7", | |
260 | "$t8", "$t9", "$k0", "$k1", "$gp", "$sp", "$fp", "$ra", | |
cee98a59 MM |
261 | "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", |
262 | "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", | |
263 | "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", | |
264 | "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", | |
265 | "hi", "lo", "$fcr31" | |
266 | }; | |
267 | ||
268 | /* Map hard register number to register class */ | |
269 | enum reg_class mips_regno_to_class[] = | |
270 | { | |
271 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
272 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
273 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
274 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
275 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
276 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
277 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
278 | GR_REGS, GR_REGS, GR_REGS, GR_REGS, | |
279 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
280 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
281 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
282 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
283 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
284 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
285 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
286 | FP_REGS, FP_REGS, FP_REGS, FP_REGS, | |
287 | HI_REG, LO_REG, ST_REGS | |
288 | }; | |
289 | ||
290 | /* Map register constraint character to register class. */ | |
291 | enum reg_class mips_char_to_class[256] = | |
292 | { | |
293 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
294 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
295 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
296 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
297 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
298 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
299 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
300 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
301 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
302 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
303 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
304 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
305 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
306 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
307 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
308 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
309 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
310 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
311 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
312 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
313 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
314 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
315 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
316 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
317 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
318 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
319 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
320 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
321 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
322 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
323 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
324 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
325 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
326 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
327 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
328 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
329 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
330 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
331 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
332 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
333 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
334 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
335 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
336 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
337 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
338 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
339 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
340 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
341 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
342 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
343 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
344 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
345 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
346 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
347 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
348 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
349 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
350 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
351 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
352 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
353 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
354 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
355 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
356 | NO_REGS, NO_REGS, NO_REGS, NO_REGS, | |
357 | }; | |
358 | ||
359 | \f | |
360 | /* Return truth value of whether OP can be used as an operands | |
361 | where a register or 16 bit unsigned integer is needed. */ | |
362 | ||
363 | int | |
364 | uns_arith_operand (op, mode) | |
365 | rtx op; | |
366 | enum machine_mode mode; | |
367 | { | |
368 | if (GET_CODE (op) == CONST_INT && SMALL_INT_UNSIGNED (op)) | |
369 | return TRUE; | |
370 | ||
371 | return register_operand (op, mode); | |
372 | } | |
373 | ||
374 | /* Return truth value of whether OP can be used as an operands | |
375 | where a 16 bit integer is needed */ | |
376 | ||
377 | int | |
378 | arith_operand (op, mode) | |
379 | rtx op; | |
380 | enum machine_mode mode; | |
381 | { | |
382 | if (GET_CODE (op) == CONST_INT && SMALL_INT (op)) | |
383 | return TRUE; | |
384 | ||
385 | return register_operand (op, mode); | |
386 | } | |
387 | ||
388 | /* Return truth value of whether OP can be used as an operand in a two | |
389 | address arithmetic insn (such as set 123456,%o4) of mode MODE. */ | |
390 | ||
391 | int | |
392 | arith32_operand (op, mode) | |
393 | rtx op; | |
394 | enum machine_mode mode; | |
395 | { | |
396 | if (GET_CODE (op) == CONST_INT) | |
397 | return TRUE; | |
398 | ||
399 | return register_operand (op, mode); | |
400 | } | |
401 | ||
402 | /* Return truth value of whether OP is a integer which fits in 16 bits */ | |
403 | ||
404 | int | |
405 | small_int (op, mode) | |
406 | rtx op; | |
407 | enum machine_mode mode; | |
408 | { | |
409 | return (GET_CODE (op) == CONST_INT && SMALL_INT (op)); | |
410 | } | |
411 | ||
412 | /* Return truth value of whether OP is an integer which is too big to | |
413 | be loaded with one instruction. */ | |
414 | ||
415 | int | |
416 | large_int (op, mode) | |
417 | rtx op; | |
418 | enum machine_mode mode; | |
419 | { | |
85f5e2b6 | 420 | HOST_WIDE_INT value; |
cee98a59 MM |
421 | |
422 | if (GET_CODE (op) != CONST_INT) | |
423 | return FALSE; | |
424 | ||
425 | value = INTVAL (op); | |
4763b498 | 426 | if ((value & ~0x0000ffff) == 0) /* ior reg,$r0,value */ |
cee98a59 MM |
427 | return FALSE; |
428 | ||
4763b498 | 429 | if (((unsigned long)(value + 32768)) <= 32767) /* subu reg,$r0,value */ |
cee98a59 MM |
430 | return FALSE; |
431 | ||
147255d8 JW |
432 | if ((value & 0x0000ffff) == 0 /* lui reg,value>>16 */ |
433 | && ((value & ~2147483647) == 0 /* signed value */ | |
434 | || (value & ~2147483647) == ~2147483647)) | |
cee98a59 MM |
435 | return FALSE; |
436 | ||
437 | return TRUE; | |
438 | } | |
439 | ||
440 | /* Return truth value of whether OP is a register or the constant 0. */ | |
441 | ||
442 | int | |
443 | reg_or_0_operand (op, mode) | |
444 | rtx op; | |
445 | enum machine_mode mode; | |
446 | { | |
447 | switch (GET_CODE (op)) | |
448 | { | |
0fb5ac6f MM |
449 | default: |
450 | break; | |
451 | ||
cee98a59 MM |
452 | case CONST_INT: |
453 | return (INTVAL (op) == 0); | |
454 | ||
455 | case CONST_DOUBLE: | |
147255d8 | 456 | if (op != CONST0_RTX (mode)) |
cee98a59 MM |
457 | return FALSE; |
458 | ||
459 | return TRUE; | |
460 | ||
461 | case REG: | |
462 | case SUBREG: | |
463 | return register_operand (op, mode); | |
464 | } | |
465 | ||
466 | return FALSE; | |
467 | } | |
468 | ||
cee98a59 MM |
469 | /* Return truth value if a CONST_DOUBLE is ok to be a legitimate constant. */ |
470 | ||
471 | int | |
472 | mips_const_double_ok (op, mode) | |
473 | rtx op; | |
474 | enum machine_mode mode; | |
475 | { | |
85098019 JW |
476 | REAL_VALUE_TYPE d; |
477 | ||
cee98a59 MM |
478 | if (GET_CODE (op) != CONST_DOUBLE) |
479 | return FALSE; | |
480 | ||
79438502 | 481 | if (mode == VOIDmode) |
cee98a59 MM |
482 | return TRUE; |
483 | ||
484 | if (mode != SFmode && mode != DFmode) | |
485 | return FALSE; | |
486 | ||
147255d8 | 487 | if (op == CONST0_RTX (mode)) |
cee98a59 MM |
488 | return TRUE; |
489 | ||
85098019 | 490 | REAL_VALUE_FROM_CONST_DOUBLE (d, op); |
cee98a59 | 491 | |
85098019 JW |
492 | if (REAL_VALUE_ISNAN (d)) |
493 | return FALSE; | |
cee98a59 | 494 | |
85098019 JW |
495 | if (REAL_VALUE_NEGATIVE (d)) |
496 | d = REAL_VALUE_NEGATE (d); | |
cee98a59 | 497 | |
85098019 JW |
498 | if (mode == DFmode) |
499 | { | |
500 | if (REAL_VALUES_LESS (d, dfhigh) | |
501 | && REAL_VALUES_LESS (dflow, d)) | |
502 | return TRUE; | |
503 | } | |
504 | else | |
505 | { | |
506 | if (REAL_VALUES_LESS (d, sfhigh) | |
507 | && REAL_VALUES_LESS (sflow, d)) | |
508 | return TRUE; | |
cee98a59 | 509 | } |
cee98a59 MM |
510 | |
511 | return FALSE; | |
512 | } | |
513 | ||
514 | /* Return truth value if a memory operand fits in a single instruction | |
515 | (ie, register + small offset). */ | |
516 | ||
517 | int | |
518 | simple_memory_operand (op, mode) | |
519 | rtx op; | |
520 | enum machine_mode mode; | |
521 | { | |
522 | rtx addr, plus0, plus1; | |
cee98a59 MM |
523 | |
524 | /* Eliminate non-memory operations */ | |
525 | if (GET_CODE (op) != MEM) | |
526 | return FALSE; | |
527 | ||
528 | /* dword operations really put out 2 instructions, so eliminate them. */ | |
147255d8 | 529 | if (GET_MODE_SIZE (GET_MODE (op)) > UNITS_PER_WORD) |
cee98a59 MM |
530 | return FALSE; |
531 | ||
532 | /* Decode the address now. */ | |
533 | addr = XEXP (op, 0); | |
534 | switch (GET_CODE (addr)) | |
535 | { | |
0fb5ac6f MM |
536 | default: |
537 | break; | |
538 | ||
cee98a59 MM |
539 | case REG: |
540 | return TRUE; | |
541 | ||
542 | case CONST_INT: | |
543 | return SMALL_INT (op); | |
544 | ||
545 | case PLUS: | |
546 | plus0 = XEXP (addr, 0); | |
547 | plus1 = XEXP (addr, 1); | |
548 | if (GET_CODE (plus0) == REG | |
549 | && GET_CODE (plus1) == CONST_INT | |
550 | && SMALL_INT (plus1)) | |
551 | return TRUE; | |
552 | ||
553 | else if (GET_CODE (plus1) == REG | |
554 | && GET_CODE (plus0) == CONST_INT | |
555 | && SMALL_INT (plus0)) | |
556 | return TRUE; | |
557 | ||
558 | else | |
559 | return FALSE; | |
560 | ||
561 | #if 0 | |
562 | /* We used to allow small symbol refs here (ie, stuff in .sdata | |
563 | or .sbss), but this causes some bugs in G++. Also, it won't | |
564 | interfere if the MIPS linker rewrites the store instruction | |
565 | because the function is PIC. */ | |
566 | ||
567 | case LABEL_REF: /* never gp relative */ | |
568 | break; | |
569 | ||
570 | case CONST: | |
571 | /* If -G 0, we can never have a GP relative memory operation. | |
572 | Also, save some time if not optimizing. */ | |
147255d8 | 573 | if (!TARGET_GP_OPT) |
cee98a59 MM |
574 | return FALSE; |
575 | ||
c831afd5 MM |
576 | { |
577 | rtx offset = const0_rtx; | |
147255d8 | 578 | addr = eliminate_constant_term (XEXP (addr, 0), &offset); |
c831afd5 MM |
579 | if (GET_CODE (op) != SYMBOL_REF) |
580 | return FALSE; | |
cee98a59 | 581 | |
c831afd5 | 582 | /* let's be paranoid.... */ |
147255d8 | 583 | if (! SMALL_INT (offset)) |
c831afd5 MM |
584 | return FALSE; |
585 | } | |
cee98a59 MM |
586 | /* fall through */ |
587 | ||
588 | case SYMBOL_REF: | |
cee98a59 MM |
589 | return SYMBOL_REF_FLAG (addr); |
590 | #endif | |
591 | } | |
592 | ||
593 | return FALSE; | |
594 | } | |
595 | ||
cee98a59 MM |
596 | /* Return true if the code of this rtx pattern is EQ or NE. */ |
597 | ||
598 | int | |
599 | equality_op (op, mode) | |
600 | rtx op; | |
601 | enum machine_mode mode; | |
602 | { | |
603 | if (mode != GET_MODE (op)) | |
604 | return FALSE; | |
605 | ||
85098019 | 606 | return (GET_CODE (op) == EQ || GET_CODE (op) == NE); |
cee98a59 MM |
607 | } |
608 | ||
609 | /* Return true if the code is a relational operations (EQ, LE, etc.) */ | |
610 | ||
611 | int | |
612 | cmp_op (op, mode) | |
613 | rtx op; | |
614 | enum machine_mode mode; | |
615 | { | |
616 | if (mode != GET_MODE (op)) | |
617 | return FALSE; | |
618 | ||
85098019 | 619 | return (GET_RTX_CLASS (GET_CODE (op)) == '<'); |
cee98a59 MM |
620 | } |
621 | ||
34b650b3 MM |
622 | /* Return true if the operand is either the PC or a label_ref. */ |
623 | ||
624 | int | |
625 | pc_or_label_operand (op, mode) | |
626 | rtx op; | |
627 | enum machine_mode mode; | |
628 | { | |
629 | if (op == pc_rtx) | |
630 | return TRUE; | |
631 | ||
632 | if (GET_CODE (op) == LABEL_REF) | |
633 | return TRUE; | |
634 | ||
635 | return FALSE; | |
636 | } | |
637 | ||
50c0000c RS |
638 | /* Test for a valid operand for a call instruction. |
639 | Don't allow the arg pointer register or virtual regs | |
640 | since they may change into reg + const, which the patterns | |
641 | can't handle yet. */ | |
642 | ||
643 | int | |
644 | call_insn_operand (op, mode) | |
645 | rtx op; | |
646 | enum machine_mode mode; | |
647 | { | |
648 | if (GET_CODE (op) == MEM | |
649 | && (CONSTANT_ADDRESS_P (XEXP (op, 0)) | |
650 | || (GET_CODE (XEXP (op, 0)) == REG | |
651 | && XEXP (op, 0) != arg_pointer_rtx | |
652 | && !(REGNO (XEXP (op, 0)) >= FIRST_PSEUDO_REGISTER | |
653 | && REGNO (XEXP (op, 0)) <= LAST_VIRTUAL_REGISTER)))) | |
654 | return 1; | |
655 | return 0; | |
656 | } | |
cee98a59 | 657 | \f |
85098019 JW |
658 | /* Returns an operand string for the given instruction's delay slot, |
659 | after updating filled delay slot statistics. | |
cee98a59 MM |
660 | |
661 | We assume that operands[0] is the target register that is set. | |
662 | ||
663 | In order to check the next insn, most of this functionality is moved | |
664 | to FINAL_PRESCAN_INSN, and we just set the global variables that | |
665 | it needs. */ | |
666 | ||
85098019 JW |
667 | /* ??? This function no longer does anything useful, because final_prescan_insn |
668 | now will never emit a nop. */ | |
669 | ||
cee98a59 MM |
670 | char * |
671 | mips_fill_delay_slot (ret, type, operands, cur_insn) | |
672 | char *ret; /* normal string to return */ | |
673 | enum delay_type type; /* type of delay */ | |
674 | rtx operands[]; /* operands to use */ | |
675 | rtx cur_insn; /* current insn */ | |
676 | { | |
677 | register rtx set_reg; | |
678 | register enum machine_mode mode; | |
679 | register rtx next_insn = (cur_insn) ? NEXT_INSN (cur_insn) : (rtx)0; | |
680 | register int num_nops; | |
681 | ||
34b650b3 | 682 | if (type == DELAY_LOAD || type == DELAY_FCMP) |
cee98a59 MM |
683 | num_nops = 1; |
684 | ||
685 | else if (type == DELAY_HILO) | |
686 | num_nops = 2; | |
687 | ||
688 | else | |
689 | num_nops = 0; | |
690 | ||
691 | /* Make sure that we don't put nop's after labels. */ | |
692 | next_insn = NEXT_INSN (cur_insn); | |
693 | while (next_insn != (rtx)0 && GET_CODE (next_insn) == NOTE) | |
694 | next_insn = NEXT_INSN (next_insn); | |
695 | ||
696 | dslots_load_total += num_nops; | |
697 | if (TARGET_DEBUG_F_MODE | |
698 | || !optimize | |
699 | || type == DELAY_NONE | |
700 | || operands == (rtx *)0 | |
701 | || cur_insn == (rtx)0 | |
702 | || next_insn == (rtx)0 | |
703 | || GET_CODE (next_insn) == CODE_LABEL | |
704 | || (set_reg = operands[0]) == (rtx)0) | |
705 | { | |
706 | dslots_number_nops = 0; | |
707 | mips_load_reg = (rtx)0; | |
708 | mips_load_reg2 = (rtx)0; | |
709 | mips_load_reg3 = (rtx)0; | |
710 | mips_load_reg4 = (rtx)0; | |
711 | return ret; | |
712 | } | |
713 | ||
714 | set_reg = operands[0]; | |
715 | if (set_reg == (rtx)0) | |
716 | return ret; | |
717 | ||
718 | while (GET_CODE (set_reg) == SUBREG) | |
719 | set_reg = SUBREG_REG (set_reg); | |
720 | ||
721 | mode = GET_MODE (set_reg); | |
722 | dslots_number_nops = num_nops; | |
147255d8 JW |
723 | mips_load_reg = set_reg; |
724 | if (GET_MODE_SIZE (mode) | |
725 | > (FP_REG_P (set_reg) ? UNITS_PER_FPREG : UNITS_PER_WORD)) | |
726 | mips_load_reg2 = gen_rtx (REG, SImode, REGNO (set_reg) + 1); | |
727 | else | |
728 | mips_load_reg2 = 0; | |
cee98a59 MM |
729 | |
730 | if (type == DELAY_HILO) | |
731 | { | |
732 | mips_load_reg3 = gen_rtx (REG, SImode, MD_REG_FIRST); | |
733 | mips_load_reg4 = gen_rtx (REG, SImode, MD_REG_FIRST+1); | |
734 | } | |
735 | else | |
736 | { | |
737 | mips_load_reg3 = 0; | |
738 | mips_load_reg4 = 0; | |
739 | } | |
740 | ||
cee98a59 MM |
741 | return ret; |
742 | } | |
743 | ||
744 | \f | |
745 | /* Determine whether a memory reference takes one (based off of the GP pointer), | |
c831afd5 | 746 | two (normal), or three (label + reg) instructions, and bump the appropriate |
cee98a59 MM |
747 | counter for -mstats. */ |
748 | ||
749 | void | |
750 | mips_count_memory_refs (op, num) | |
751 | rtx op; | |
752 | int num; | |
753 | { | |
754 | int additional = 0; | |
755 | int n_words = 0; | |
756 | rtx addr, plus0, plus1; | |
757 | enum rtx_code code0, code1; | |
758 | int looping; | |
759 | ||
760 | if (TARGET_DEBUG_B_MODE) | |
761 | { | |
762 | fprintf (stderr, "\n========== mips_count_memory_refs:\n"); | |
763 | debug_rtx (op); | |
764 | } | |
765 | ||
766 | /* Skip MEM if passed, otherwise handle movsi of address. */ | |
767 | addr = (GET_CODE (op) != MEM) ? op : XEXP (op, 0); | |
768 | ||
769 | /* Loop, going through the address RTL */ | |
770 | do | |
771 | { | |
772 | looping = FALSE; | |
773 | switch (GET_CODE (addr)) | |
774 | { | |
0fb5ac6f MM |
775 | default: |
776 | break; | |
777 | ||
cee98a59 MM |
778 | case REG: |
779 | case CONST_INT: | |
780 | break; | |
781 | ||
782 | case PLUS: | |
783 | plus0 = XEXP (addr, 0); | |
784 | plus1 = XEXP (addr, 1); | |
785 | code0 = GET_CODE (plus0); | |
786 | code1 = GET_CODE (plus1); | |
787 | ||
788 | if (code0 == REG) | |
789 | { | |
790 | additional++; | |
791 | addr = plus1; | |
792 | looping = TRUE; | |
793 | continue; | |
794 | } | |
795 | ||
796 | if (code0 == CONST_INT) | |
797 | { | |
798 | addr = plus1; | |
799 | looping = TRUE; | |
800 | continue; | |
801 | } | |
802 | ||
803 | if (code1 == REG) | |
804 | { | |
805 | additional++; | |
806 | addr = plus0; | |
807 | looping = TRUE; | |
808 | continue; | |
809 | } | |
810 | ||
811 | if (code1 == CONST_INT) | |
812 | { | |
813 | addr = plus0; | |
814 | looping = TRUE; | |
815 | continue; | |
816 | } | |
817 | ||
818 | if (code0 == SYMBOL_REF || code0 == LABEL_REF || code0 == CONST) | |
819 | { | |
820 | addr = plus0; | |
821 | looping = TRUE; | |
822 | continue; | |
823 | } | |
824 | ||
825 | if (code1 == SYMBOL_REF || code1 == LABEL_REF || code1 == CONST) | |
826 | { | |
827 | addr = plus1; | |
828 | looping = TRUE; | |
829 | continue; | |
830 | } | |
831 | ||
832 | break; | |
833 | ||
834 | case LABEL_REF: | |
835 | n_words = 2; /* always 2 words */ | |
836 | break; | |
837 | ||
838 | case CONST: | |
839 | addr = XEXP (addr, 0); | |
840 | looping = TRUE; | |
841 | continue; | |
842 | ||
843 | case SYMBOL_REF: | |
844 | n_words = SYMBOL_REF_FLAG (addr) ? 1 : 2; | |
845 | break; | |
846 | } | |
847 | } | |
848 | while (looping); | |
849 | ||
850 | if (n_words == 0) | |
851 | return; | |
852 | ||
853 | n_words += additional; | |
854 | if (n_words > 3) | |
855 | n_words = 3; | |
856 | ||
857 | num_refs[n_words-1] += num; | |
858 | } | |
859 | ||
860 | \f | |
92544bdf ILT |
861 | /* Return RTL for the offset from the current function to the |
862 | argument. */ | |
863 | ||
864 | rtx | |
865 | embedded_pic_offset (x) | |
866 | rtx x; | |
867 | { | |
868 | if (embedded_pic_fnaddr_rtx == NULL) | |
869 | embedded_pic_fnaddr_rtx = gen_reg_rtx (Pmode); | |
870 | return gen_rtx (CONST, Pmode, | |
871 | gen_rtx (MINUS, Pmode, x, | |
872 | XEXP (DECL_RTL (current_function_decl), 0))); | |
873 | } | |
874 | ||
cee98a59 MM |
875 | /* Return the appropriate instructions to move one operand to another. */ |
876 | ||
877 | char * | |
878 | mips_move_1word (operands, insn, unsignedp) | |
879 | rtx operands[]; | |
880 | rtx insn; | |
881 | int unsignedp; | |
882 | { | |
883 | char *ret = 0; | |
884 | rtx op0 = operands[0]; | |
885 | rtx op1 = operands[1]; | |
886 | enum rtx_code code0 = GET_CODE (op0); | |
887 | enum rtx_code code1 = GET_CODE (op1); | |
888 | enum machine_mode mode = GET_MODE (op0); | |
889 | int subreg_word0 = 0; | |
890 | int subreg_word1 = 0; | |
891 | enum delay_type delay = DELAY_NONE; | |
892 | ||
893 | while (code0 == SUBREG) | |
894 | { | |
895 | subreg_word0 += SUBREG_WORD (op0); | |
896 | op0 = SUBREG_REG (op0); | |
897 | code0 = GET_CODE (op0); | |
898 | } | |
899 | ||
900 | while (code1 == SUBREG) | |
901 | { | |
902 | subreg_word1 += SUBREG_WORD (op1); | |
903 | op1 = SUBREG_REG (op1); | |
904 | code1 = GET_CODE (op1); | |
905 | } | |
906 | ||
907 | if (code0 == REG) | |
908 | { | |
909 | int regno0 = REGNO (op0) + subreg_word0; | |
910 | ||
911 | if (code1 == REG) | |
912 | { | |
913 | int regno1 = REGNO (op1) + subreg_word1; | |
914 | ||
915 | /* Just in case, don't do anything for assigning a register | |
916 | to itself, unless we are filling a delay slot. */ | |
917 | if (regno0 == regno1 && set_nomacro == 0) | |
918 | ret = ""; | |
919 | ||
920 | else if (GP_REG_P (regno0)) | |
921 | { | |
922 | if (GP_REG_P (regno1)) | |
923 | ret = "move\t%0,%1"; | |
924 | ||
925 | else if (MD_REG_P (regno1)) | |
926 | { | |
927 | delay = DELAY_HILO; | |
928 | ret = "mf%1\t%0"; | |
929 | } | |
930 | ||
931 | else | |
932 | { | |
933 | delay = DELAY_LOAD; | |
934 | if (FP_REG_P (regno1)) | |
935 | ret = "mfc1\t%0,%1"; | |
936 | ||
937 | else if (regno1 == FPSW_REGNUM) | |
938 | ret = "cfc1\t%0,$31"; | |
939 | } | |
940 | } | |
941 | ||
942 | else if (FP_REG_P (regno0)) | |
943 | { | |
944 | if (GP_REG_P (regno1)) | |
945 | { | |
946 | delay = DELAY_LOAD; | |
947 | ret = "mtc1\t%1,%0"; | |
948 | } | |
949 | ||
950 | if (FP_REG_P (regno1)) | |
951 | ret = "mov.s\t%0,%1"; | |
952 | } | |
953 | ||
954 | else if (MD_REG_P (regno0)) | |
955 | { | |
956 | if (GP_REG_P (regno1)) | |
957 | { | |
958 | delay = DELAY_HILO; | |
959 | ret = "mt%0\t%1"; | |
960 | } | |
961 | } | |
962 | ||
963 | else if (regno0 == FPSW_REGNUM) | |
964 | { | |
965 | if (GP_REG_P (regno1)) | |
966 | { | |
967 | delay = DELAY_LOAD; | |
968 | ret = "ctc1\t%0,$31"; | |
969 | } | |
970 | } | |
971 | } | |
972 | ||
973 | else if (code1 == MEM) | |
974 | { | |
975 | delay = DELAY_LOAD; | |
976 | ||
977 | if (TARGET_STATS) | |
978 | mips_count_memory_refs (op1, 1); | |
979 | ||
980 | if (GP_REG_P (regno0)) | |
981 | { | |
982 | /* For loads, use the mode of the memory item, instead of the | |
983 | target, so zero/sign extend can use this code as well. */ | |
984 | switch (GET_MODE (op1)) | |
985 | { | |
147255d8 JW |
986 | default: |
987 | break; | |
988 | case SFmode: | |
989 | ret = "lw\t%0,%1"; | |
990 | break; | |
991 | case SImode: | |
992 | ret = ((unsignedp && TARGET_64BIT) | |
993 | ? "lwu\t%0,%1" | |
994 | : "lw\t%0,%1"); | |
995 | break; | |
996 | case HImode: | |
997 | ret = (unsignedp) ? "lhu\t%0,%1" : "lh\t%0,%1"; | |
998 | break; | |
999 | case QImode: | |
1000 | ret = (unsignedp) ? "lbu\t%0,%1" : "lb\t%0,%1"; | |
1001 | break; | |
cee98a59 MM |
1002 | } |
1003 | } | |
1004 | ||
1005 | else if (FP_REG_P (regno0) && (mode == SImode || mode == SFmode)) | |
1006 | ret = "l.s\t%0,%1"; | |
1007 | ||
1008 | if (ret != (char *)0 && MEM_VOLATILE_P (op1)) | |
1009 | { | |
1010 | int i = strlen (ret); | |
1011 | if (i > sizeof (volatile_buffer) - sizeof ("%{%}")) | |
1012 | abort (); | |
1013 | ||
1014 | sprintf (volatile_buffer, "%%{%s%%}", ret); | |
1015 | ret = volatile_buffer; | |
1016 | } | |
1017 | } | |
1018 | ||
79438502 JW |
1019 | else if (code1 == CONST_INT |
1020 | || (code1 == CONST_DOUBLE | |
1021 | && GET_MODE (op1) == VOIDmode)) | |
cee98a59 | 1022 | { |
79438502 JW |
1023 | if (code1 == CONST_DOUBLE) |
1024 | { | |
1025 | /* This can happen when storing constants into long long | |
1026 | bitfields. Just store the least significant word of | |
1027 | the value. */ | |
1028 | operands[1] = op1 = GEN_INT (CONST_DOUBLE_LOW (op1)); | |
1029 | } | |
1030 | ||
cee98a59 MM |
1031 | if (INTVAL (op1) == 0) |
1032 | { | |
1033 | if (GP_REG_P (regno0)) | |
1034 | ret = "move\t%0,%z1"; | |
1035 | ||
1036 | else if (FP_REG_P (regno0)) | |
1037 | { | |
1038 | delay = DELAY_LOAD; | |
842eb20e | 1039 | ret = "mtc1\t%z1,%0"; |
cee98a59 MM |
1040 | } |
1041 | } | |
1042 | ||
1043 | else if (GP_REG_P (regno0)) | |
0fb5ac6f | 1044 | ret = (INTVAL (op1) < 0) ? "li\t%0,%1\t\t\t# %X1" : "li\t%0,%X1\t\t# %1"; |
cee98a59 MM |
1045 | } |
1046 | ||
1047 | else if (code1 == CONST_DOUBLE && mode == SFmode) | |
1048 | { | |
147255d8 | 1049 | if (op1 == CONST0_RTX (SFmode)) |
cee98a59 MM |
1050 | { |
1051 | if (GP_REG_P (regno0)) | |
1052 | ret = "move\t%0,%."; | |
1053 | ||
1054 | else if (FP_REG_P (regno0)) | |
1055 | { | |
1056 | delay = DELAY_LOAD; | |
1057 | ret = "mtc1\t%.,%0"; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | else | |
1062 | { | |
1063 | delay = DELAY_LOAD; | |
1064 | ret = "li.s\t%0,%1"; | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | else if (code1 == LABEL_REF) | |
cee98a59 MM |
1069 | { |
1070 | if (TARGET_STATS) | |
1071 | mips_count_memory_refs (op1, 1); | |
1072 | ||
c7343333 MM |
1073 | ret = "la\t%0,%a1"; |
1074 | } | |
1075 | ||
1076 | else if (code1 == SYMBOL_REF || code1 == CONST) | |
1077 | { | |
c831afd5 | 1078 | if (HALF_PIC_P () && CONSTANT_P (op1) && HALF_PIC_ADDRESS_P (op1)) |
cee98a59 | 1079 | { |
c7343333 MM |
1080 | rtx offset = const0_rtx; |
1081 | ||
1082 | if (GET_CODE (op1) == CONST) | |
1083 | op1 = eliminate_constant_term (XEXP (op1, 0), &offset); | |
1084 | ||
1085 | if (GET_CODE (op1) == SYMBOL_REF) | |
1086 | { | |
1087 | operands[2] = HALF_PIC_PTR (op1); | |
1088 | ||
1089 | if (TARGET_STATS) | |
1090 | mips_count_memory_refs (operands[2], 1); | |
1091 | ||
1092 | if (INTVAL (offset) == 0) | |
1093 | { | |
1094 | delay = DELAY_LOAD; | |
147255d8 JW |
1095 | ret = (unsignedp && TARGET_64BIT |
1096 | ? "lwu\t%0,%2" | |
1097 | : "lw\t%0,%2"); | |
c7343333 MM |
1098 | } |
1099 | else | |
1100 | { | |
1101 | dslots_load_total++; | |
1102 | operands[3] = offset; | |
147255d8 JW |
1103 | if (unsignedp && TARGET_64BIT) |
1104 | ret = (SMALL_INT (offset)) | |
1105 | ? "lwu\t%0,%2%#\n\tadd\t%0,%0,%3" | |
1106 | : "lwu\t%0,%2%#\n\t%[li\t%@,%3\n\tadd\t%0,%0,%@%]"; | |
1107 | else | |
1108 | ret = (SMALL_INT (offset)) | |
1109 | ? "lw\t%0,%2%#\n\tadd\t%0,%0,%3" | |
1110 | : "lw\t%0,%2%#\n\t%[li\t%@,%3\n\tadd\t%0,%0,%@%]"; | |
c7343333 MM |
1111 | } |
1112 | } | |
cee98a59 MM |
1113 | } |
1114 | else | |
c7343333 MM |
1115 | { |
1116 | if (TARGET_STATS) | |
1117 | mips_count_memory_refs (op1, 1); | |
1118 | ||
1119 | ret = "la\t%0,%a1"; | |
1120 | } | |
cee98a59 MM |
1121 | } |
1122 | ||
1123 | else if (code1 == PLUS) | |
1124 | { | |
1125 | rtx add_op0 = XEXP (op1, 0); | |
1126 | rtx add_op1 = XEXP (op1, 1); | |
1127 | ||
1128 | if (GET_CODE (XEXP (op1, 1)) == REG && GET_CODE (XEXP (op1, 0)) == CONST_INT) | |
1129 | { | |
1130 | add_op0 = XEXP (op1, 1); /* reverse operands */ | |
1131 | add_op1 = XEXP (op1, 0); | |
1132 | } | |
1133 | ||
1134 | operands[2] = add_op0; | |
1135 | operands[3] = add_op1; | |
1136 | ret = "add%:\t%0,%2,%3"; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | else if (code0 == MEM) | |
1141 | { | |
1142 | if (TARGET_STATS) | |
1143 | mips_count_memory_refs (op0, 1); | |
1144 | ||
1145 | if (code1 == REG) | |
1146 | { | |
1147 | int regno1 = REGNO (op1) + subreg_word1; | |
1148 | ||
1149 | if (GP_REG_P (regno1)) | |
1150 | { | |
1151 | switch (mode) | |
1152 | { | |
0fb5ac6f | 1153 | default: break; |
cee98a59 MM |
1154 | case SFmode: ret = "sw\t%1,%0"; break; |
1155 | case SImode: ret = "sw\t%1,%0"; break; | |
1156 | case HImode: ret = "sh\t%1,%0"; break; | |
1157 | case QImode: ret = "sb\t%1,%0"; break; | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | else if (FP_REG_P (regno1) && (mode == SImode || mode == SFmode)) | |
1162 | ret = "s.s\t%1,%0"; | |
1163 | } | |
1164 | ||
1165 | else if (code1 == CONST_INT && INTVAL (op1) == 0) | |
1166 | { | |
1167 | switch (mode) | |
1168 | { | |
0fb5ac6f | 1169 | default: break; |
cee98a59 MM |
1170 | case SFmode: ret = "sw\t%z1,%0"; break; |
1171 | case SImode: ret = "sw\t%z1,%0"; break; | |
1172 | case HImode: ret = "sh\t%z1,%0"; break; | |
1173 | case QImode: ret = "sb\t%z1,%0"; break; | |
1174 | } | |
1175 | } | |
1176 | ||
147255d8 | 1177 | else if (code1 == CONST_DOUBLE && op1 == CONST0_RTX (mode)) |
cee98a59 MM |
1178 | { |
1179 | switch (mode) | |
1180 | { | |
0fb5ac6f | 1181 | default: break; |
cee98a59 MM |
1182 | case SFmode: ret = "sw\t%.,%0"; break; |
1183 | case SImode: ret = "sw\t%.,%0"; break; | |
1184 | case HImode: ret = "sh\t%.,%0"; break; | |
1185 | case QImode: ret = "sb\t%.,%0"; break; | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | if (ret != (char *)0 && MEM_VOLATILE_P (op0)) | |
1190 | { | |
1191 | int i = strlen (ret); | |
1192 | if (i > sizeof (volatile_buffer) - sizeof ("%{%}")) | |
1193 | abort (); | |
1194 | ||
1195 | sprintf (volatile_buffer, "%%{%s%%}", ret); | |
1196 | ret = volatile_buffer; | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | if (ret == (char *)0) | |
1201 | { | |
1202 | abort_with_insn (insn, "Bad move"); | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | if (delay != DELAY_NONE) | |
1207 | return mips_fill_delay_slot (ret, delay, operands, insn); | |
1208 | ||
1209 | return ret; | |
1210 | } | |
1211 | ||
1212 | \f | |
1213 | /* Return the appropriate instructions to move 2 words */ | |
1214 | ||
1215 | char * | |
1216 | mips_move_2words (operands, insn) | |
1217 | rtx operands[]; | |
1218 | rtx insn; | |
1219 | { | |
1220 | char *ret = 0; | |
1221 | rtx op0 = operands[0]; | |
1222 | rtx op1 = operands[1]; | |
1223 | enum rtx_code code0 = GET_CODE (operands[0]); | |
1224 | enum rtx_code code1 = GET_CODE (operands[1]); | |
1225 | int subreg_word0 = 0; | |
1226 | int subreg_word1 = 0; | |
1227 | enum delay_type delay = DELAY_NONE; | |
1228 | ||
1229 | while (code0 == SUBREG) | |
1230 | { | |
1231 | subreg_word0 += SUBREG_WORD (op0); | |
1232 | op0 = SUBREG_REG (op0); | |
1233 | code0 = GET_CODE (op0); | |
1234 | } | |
1235 | ||
1236 | while (code1 == SUBREG) | |
1237 | { | |
1238 | subreg_word1 += SUBREG_WORD (op1); | |
1239 | op1 = SUBREG_REG (op1); | |
1240 | code1 = GET_CODE (op1); | |
1241 | } | |
1242 | ||
1243 | if (code0 == REG) | |
1244 | { | |
1245 | int regno0 = REGNO (op0) + subreg_word0; | |
1246 | ||
1247 | if (code1 == REG) | |
1248 | { | |
1249 | int regno1 = REGNO (op1) + subreg_word1; | |
1250 | ||
1251 | /* Just in case, don't do anything for assigning a register | |
1252 | to itself, unless we are filling a delay slot. */ | |
1253 | if (regno0 == regno1 && set_nomacro == 0) | |
1254 | ret = ""; | |
1255 | ||
1256 | else if (FP_REG_P (regno0)) | |
1257 | { | |
1258 | if (FP_REG_P (regno1)) | |
1259 | ret = "mov.d\t%0,%1"; | |
1260 | ||
1261 | else | |
1262 | { | |
1263 | delay = DELAY_LOAD; | |
f8151871 | 1264 | if (TARGET_FLOAT64) |
147255d8 | 1265 | { |
f8151871 JW |
1266 | if (!TARGET_64BIT) |
1267 | abort_with_insn (insn, "Bad move"); | |
147255d8 JW |
1268 | #ifdef TARGET_FP_CALL_32 |
1269 | if (FP_CALL_GP_REG_P (regno1)) | |
1270 | ret = "dsll\t%1,32\n\tor\t%1,%D1\n\tdmtc1\t%1,%0"; | |
1271 | else | |
1272 | #endif | |
1273 | ret = "dmtc1\t%1,%0"; | |
1274 | } | |
1275 | else | |
1276 | ret = "mtc1\t%L1,%0\n\tmtc1\t%M1,%D0"; | |
cee98a59 MM |
1277 | } |
1278 | } | |
1279 | ||
1280 | else if (FP_REG_P (regno1)) | |
1281 | { | |
1282 | delay = DELAY_LOAD; | |
f8151871 | 1283 | if (TARGET_FLOAT64) |
147255d8 | 1284 | { |
f8151871 JW |
1285 | if (!TARGET_64BIT) |
1286 | abort_with_insn (insn, "Bad move"); | |
147255d8 JW |
1287 | #ifdef TARGET_FP_CALL_32 |
1288 | if (FP_CALL_GP_REG_P (regno0)) | |
1289 | ret = "dmfc1\t%0,%1\n\tmfc1\t%D0,%1\n\tdsrl\t%0,32"; | |
1290 | else | |
1291 | #endif | |
1292 | ret = "dmfc1\t%0,%1"; | |
1293 | } | |
1294 | else | |
1295 | ret = "mfc1\t%L0,%1\n\tmfc1\t%M0,%D1"; | |
cee98a59 MM |
1296 | } |
1297 | ||
1298 | else if (MD_REG_P (regno0) && GP_REG_P (regno1)) | |
1299 | { | |
1300 | delay = DELAY_HILO; | |
147255d8 JW |
1301 | if (TARGET_64BIT) |
1302 | ret = "mt%0\t%1"; | |
1303 | else | |
1304 | ret = "mthi\t%M1\n\tmtlo\t%L1"; | |
cee98a59 MM |
1305 | } |
1306 | ||
1307 | else if (GP_REG_P (regno0) && MD_REG_P (regno1)) | |
1308 | { | |
1309 | delay = DELAY_HILO; | |
147255d8 JW |
1310 | if (TARGET_64BIT) |
1311 | ret = "mf%1\t%0"; | |
1312 | else | |
1313 | ret = "mfhi\t%M0\n\tmflo\t%L0"; | |
cee98a59 MM |
1314 | } |
1315 | ||
147255d8 JW |
1316 | else if (TARGET_64BIT) |
1317 | ret = "move\t%0,%1"; | |
1318 | ||
cee98a59 MM |
1319 | else if (regno0 != (regno1+1)) |
1320 | ret = "move\t%0,%1\n\tmove\t%D0,%D1"; | |
1321 | ||
1322 | else | |
1323 | ret = "move\t%D0,%D1\n\tmove\t%0,%1"; | |
1324 | } | |
1325 | ||
1326 | else if (code1 == CONST_DOUBLE) | |
1327 | { | |
f8151871 JW |
1328 | /* Move zero from $0 unless !TARGET_64BIT and recipient |
1329 | is 64-bit fp reg, in which case generate a constant. */ | |
1330 | if (op1 != CONST0_RTX (GET_MODE (op1)) | |
1331 | || (TARGET_FLOAT64 && !TARGET_64BIT && FP_REG_P (regno0))) | |
cee98a59 MM |
1332 | { |
1333 | if (GET_MODE (op1) == DFmode) | |
1334 | { | |
1335 | delay = DELAY_LOAD; | |
147255d8 JW |
1336 | #ifdef TARGET_FP_CALL_32 |
1337 | if (FP_CALL_GP_REG_P (regno0)) | |
f8151871 JW |
1338 | { |
1339 | if (TARGET_FLOAT64 && !TARGET_64BIT) | |
1340 | { | |
96abdcb1 ILT |
1341 | split_double (op1, operands + 2, operands + 3); |
1342 | ret = "li\t%0,%2\n\tli\t%D0,%3"; | |
f8151871 JW |
1343 | } |
1344 | else | |
1345 | ret = "li.d\t%0,%1\n\tdsll\t%D0,%0,32\n\tdsrl\t%D0,32\n\tdsrl\t%0,32"; | |
1346 | } | |
147255d8 JW |
1347 | else |
1348 | #endif | |
1349 | ret = "li.d\t%0,%1"; | |
cee98a59 MM |
1350 | } |
1351 | ||
f8151871 | 1352 | else if (TARGET_FLOAT64) |
147255d8 JW |
1353 | ret = "li\t%0,%1"; |
1354 | ||
cee98a59 MM |
1355 | else |
1356 | { | |
96abdcb1 ILT |
1357 | split_double (op1, operands + 2, operands + 3); |
1358 | ret = "li\t%0,%2\n\tli\t%D0,%3"; | |
cee98a59 MM |
1359 | } |
1360 | } | |
1361 | ||
1362 | else | |
1363 | { | |
1364 | if (GP_REG_P (regno0)) | |
147255d8 JW |
1365 | ret = (TARGET_64BIT |
1366 | #ifdef TARGET_FP_CALL_32 | |
1367 | && ! FP_CALL_GP_REG_P (regno0) | |
1368 | #endif | |
1369 | ) | |
1370 | ? "move\t%0,%." | |
1371 | : "move\t%0,%.\n\tmove\t%D0,%."; | |
cee98a59 MM |
1372 | |
1373 | else if (FP_REG_P (regno0)) | |
1374 | { | |
1375 | delay = DELAY_LOAD; | |
147255d8 | 1376 | ret = (TARGET_64BIT) |
cee98a59 MM |
1377 | ? "dmtc1\t%.,%0" |
1378 | : "mtc1\t%.,%0\n\tmtc1\t%.,%D0"; | |
1379 | } | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | else if (code1 == CONST_INT && INTVAL (op1) == 0) | |
1384 | { | |
1385 | if (GP_REG_P (regno0)) | |
147255d8 JW |
1386 | ret = (TARGET_64BIT) |
1387 | ? "move\t%0,%." | |
1388 | : "move\t%0,%.\n\tmove\t%D0,%."; | |
cee98a59 MM |
1389 | |
1390 | else if (FP_REG_P (regno0)) | |
1391 | { | |
1392 | delay = DELAY_LOAD; | |
147255d8 | 1393 | ret = (TARGET_64BIT) |
cee98a59 | 1394 | ? "dmtc1\t%.,%0" |
f8151871 JW |
1395 | : (TARGET_FLOAT64 |
1396 | ? "li.d\t%0,%1" | |
1397 | : "mtc1\t%.,%0\n\tmtc1\t%.,%D0"); | |
cee98a59 MM |
1398 | } |
1399 | } | |
1400 | ||
1401 | else if (code1 == CONST_INT && GET_MODE (op0) == DImode && GP_REG_P (regno0)) | |
1402 | { | |
147255d8 JW |
1403 | if (TARGET_64BIT) |
1404 | ret = "li\t%0,%1"; | |
1405 | else | |
1406 | { | |
1407 | operands[2] = GEN_INT (INTVAL (operands[1]) >= 0 ? 0 : -1); | |
1408 | ret = "li\t%M0,%2\n\tli\t%L0,%1"; | |
1409 | } | |
cee98a59 MM |
1410 | } |
1411 | ||
1412 | else if (code1 == MEM) | |
1413 | { | |
1414 | delay = DELAY_LOAD; | |
1415 | ||
1416 | if (TARGET_STATS) | |
1417 | mips_count_memory_refs (op1, 2); | |
1418 | ||
1419 | if (FP_REG_P (regno0)) | |
1420 | ret = "l.d\t%0,%1"; | |
1421 | ||
147255d8 JW |
1422 | else if (TARGET_64BIT) |
1423 | { | |
1424 | #ifdef TARGET_FP_CALL_32 | |
1425 | if (FP_CALL_GP_REG_P (regno0)) | |
1426 | { | |
1427 | if (offsettable_address_p (FALSE, SImode, op1)) | |
1428 | ret = "lwu\t%0,%1\n\tlwu\t%D0,4+%1"; | |
1429 | else | |
1430 | ret = "ld\t%0,%1\n\tdsll\t%D0,%0,32\n\tdsrl\t%D0,32\n\tdsrl\t%0,32"; | |
1431 | } | |
1432 | else | |
1433 | #endif | |
1434 | ret = "ld\t%0,%1"; | |
1435 | } | |
1436 | ||
cee98a59 MM |
1437 | else if (offsettable_address_p (1, DFmode, XEXP (op1, 0))) |
1438 | { | |
1439 | operands[2] = adj_offsettable_operand (op1, 4); | |
1440 | if (reg_mentioned_p (op0, op1)) | |
1441 | ret = "lw\t%D0,%2\n\tlw\t%0,%1"; | |
1442 | else | |
1443 | ret = "lw\t%0,%1\n\tlw\t%D0,%2"; | |
1444 | } | |
1445 | ||
1446 | if (ret != (char *)0 && MEM_VOLATILE_P (op1)) | |
1447 | { | |
1448 | int i = strlen (ret); | |
1449 | if (i > sizeof (volatile_buffer) - sizeof ("%{%}")) | |
1450 | abort (); | |
1451 | ||
1452 | sprintf (volatile_buffer, "%%{%s%%}", ret); | |
1453 | ret = volatile_buffer; | |
1454 | } | |
1455 | } | |
147255d8 JW |
1456 | |
1457 | else if (code1 == LABEL_REF | |
1458 | || code1 == SYMBOL_REF | |
1459 | || code1 == CONST) | |
1460 | { | |
1461 | if (! TARGET_64BIT) | |
1462 | abort (); | |
1463 | return mips_move_1word (operands, insn, 0); | |
1464 | } | |
cee98a59 MM |
1465 | } |
1466 | ||
1467 | else if (code0 == MEM) | |
1468 | { | |
1469 | if (code1 == REG) | |
1470 | { | |
1471 | int regno1 = REGNO (op1) + subreg_word1; | |
1472 | ||
1473 | if (FP_REG_P (regno1)) | |
1474 | ret = "s.d\t%1,%0"; | |
1475 | ||
147255d8 JW |
1476 | else if (TARGET_64BIT) |
1477 | { | |
1478 | #ifdef TARGET_FP_CALL_32 | |
1479 | if (FP_CALL_GP_REG_P (regno1)) | |
1480 | ret = "dsll\t%1,32\n\tor\t%1,%D1\n\tsd\t%1,%0"; | |
1481 | else | |
1482 | #endif | |
1483 | ret = "sd\t%1,%0"; | |
1484 | } | |
1485 | ||
cee98a59 MM |
1486 | else if (offsettable_address_p (1, DFmode, XEXP (op0, 0))) |
1487 | { | |
1488 | operands[2] = adj_offsettable_operand (op0, 4); | |
1489 | ret = "sw\t%1,%0\n\tsw\t%D1,%2"; | |
1490 | } | |
1491 | } | |
1492 | ||
147255d8 JW |
1493 | else if (((code1 == CONST_INT && INTVAL (op1) == 0) |
1494 | || (code1 == CONST_DOUBLE | |
1495 | && op1 == CONST0_RTX (GET_MODE (op1)))) | |
1496 | && (TARGET_64BIT | |
1497 | || offsettable_address_p (1, DFmode, XEXP (op0, 0)))) | |
cee98a59 | 1498 | { |
147255d8 | 1499 | if (TARGET_64BIT) |
cee98a59 MM |
1500 | ret = "sd\t%.,%0"; |
1501 | else | |
1502 | { | |
1503 | operands[2] = adj_offsettable_operand (op0, 4); | |
1504 | ret = "sw\t%.,%0\n\tsw\t%.,%2"; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | if (TARGET_STATS) | |
1509 | mips_count_memory_refs (op0, 2); | |
1510 | ||
1511 | if (ret != (char *)0 && MEM_VOLATILE_P (op0)) | |
1512 | { | |
1513 | int i = strlen (ret); | |
1514 | if (i > sizeof (volatile_buffer) - sizeof ("%{%}")) | |
1515 | abort (); | |
1516 | ||
1517 | sprintf (volatile_buffer, "%%{%s%%}", ret); | |
1518 | ret = volatile_buffer; | |
1519 | } | |
1520 | } | |
1521 | ||
1522 | if (ret == (char *)0) | |
1523 | { | |
1524 | abort_with_insn (insn, "Bad move"); | |
1525 | return 0; | |
1526 | } | |
1527 | ||
1528 | if (delay != DELAY_NONE) | |
1529 | return mips_fill_delay_slot (ret, delay, operands, insn); | |
1530 | ||
1531 | return ret; | |
1532 | } | |
1533 | ||
1534 | \f | |
1535 | /* Provide the costs of an addressing mode that contains ADDR. | |
c831afd5 | 1536 | If ADDR is not a valid address, its cost is irrelevant. */ |
cee98a59 MM |
1537 | |
1538 | int | |
1539 | mips_address_cost (addr) | |
1540 | rtx addr; | |
1541 | { | |
cee98a59 MM |
1542 | switch (GET_CODE (addr)) |
1543 | { | |
0fb5ac6f MM |
1544 | default: |
1545 | break; | |
1546 | ||
cee98a59 MM |
1547 | case LO_SUM: |
1548 | case HIGH: | |
1549 | return 1; | |
1550 | ||
1551 | case LABEL_REF: | |
1552 | return 2; | |
1553 | ||
1554 | case CONST: | |
c831afd5 MM |
1555 | { |
1556 | rtx offset = const0_rtx; | |
147255d8 | 1557 | addr = eliminate_constant_term (XEXP (addr, 0), &offset); |
c831afd5 MM |
1558 | if (GET_CODE (addr) == LABEL_REF) |
1559 | return 2; | |
cee98a59 | 1560 | |
c831afd5 MM |
1561 | if (GET_CODE (addr) != SYMBOL_REF) |
1562 | return 4; | |
cee98a59 | 1563 | |
147255d8 | 1564 | if (! SMALL_INT (offset)) |
c831afd5 MM |
1565 | return 2; |
1566 | } | |
cee98a59 MM |
1567 | /* fall through */ |
1568 | ||
1569 | case SYMBOL_REF: | |
1570 | return SYMBOL_REF_FLAG (addr) ? 1 : 2; | |
1571 | ||
1572 | case PLUS: | |
1573 | { | |
1574 | register rtx plus0 = XEXP (addr, 0); | |
1575 | register rtx plus1 = XEXP (addr, 1); | |
1576 | ||
1577 | if (GET_CODE (plus0) != REG && GET_CODE (plus1) == REG) | |
1578 | { | |
1579 | plus0 = XEXP (addr, 1); | |
1580 | plus1 = XEXP (addr, 0); | |
1581 | } | |
1582 | ||
1583 | if (GET_CODE (plus0) != REG) | |
1584 | break; | |
1585 | ||
1586 | switch (GET_CODE (plus1)) | |
1587 | { | |
0fb5ac6f MM |
1588 | default: |
1589 | break; | |
1590 | ||
cee98a59 | 1591 | case CONST_INT: |
147255d8 | 1592 | return (SMALL_INT (plus1) ? 1 : 2); |
cee98a59 MM |
1593 | |
1594 | case CONST: | |
1595 | case SYMBOL_REF: | |
1596 | case LABEL_REF: | |
1597 | case HIGH: | |
1598 | case LO_SUM: | |
1599 | return mips_address_cost (plus1) + 1; | |
1600 | } | |
1601 | } | |
1602 | } | |
1603 | ||
1604 | return 4; | |
1605 | } | |
1606 | ||
508a48d1 JW |
1607 | /* Return true if X is an address which needs a temporary register when |
1608 | reloaded while generating PIC code. */ | |
1609 | ||
1610 | int | |
1611 | pic_address_needs_scratch (x) | |
1612 | rtx x; | |
1613 | { | |
1614 | /* An address which is a symbolic plus a non SMALL_INT needs a temp reg. */ | |
1615 | if (GET_CODE (x) == CONST && GET_CODE (XEXP (x, 0)) == PLUS | |
1616 | && GET_CODE (XEXP (XEXP (x, 0), 0)) == SYMBOL_REF | |
1617 | && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT | |
1618 | && ! SMALL_INT (XEXP (XEXP (x, 0), 1))) | |
1619 | return 1; | |
1620 | ||
1621 | return 0; | |
1622 | } | |
34b650b3 MM |
1623 | \f |
1624 | /* Make normal rtx_code into something we can index from an array */ | |
1625 | ||
1626 | static enum internal_test | |
1627 | map_test_to_internal_test (test_code) | |
1628 | enum rtx_code test_code; | |
1629 | { | |
1630 | enum internal_test test = ITEST_MAX; | |
1631 | ||
1632 | switch (test_code) | |
1633 | { | |
0fb5ac6f | 1634 | default: break; |
34b650b3 MM |
1635 | case EQ: test = ITEST_EQ; break; |
1636 | case NE: test = ITEST_NE; break; | |
1637 | case GT: test = ITEST_GT; break; | |
1638 | case GE: test = ITEST_GE; break; | |
1639 | case LT: test = ITEST_LT; break; | |
1640 | case LE: test = ITEST_LE; break; | |
1641 | case GTU: test = ITEST_GTU; break; | |
1642 | case GEU: test = ITEST_GEU; break; | |
1643 | case LTU: test = ITEST_LTU; break; | |
1644 | case LEU: test = ITEST_LEU; break; | |
1645 | } | |
1646 | ||
1647 | return test; | |
1648 | } | |
1649 | ||
1650 | \f | |
1651 | /* Generate the code to compare two integer values. The return value is: | |
1652 | (reg:SI xx) The pseudo register the comparison is in | |
147255d8 JW |
1653 | (rtx)0 No register, generate a simple branch. |
1654 | ||
1655 | ??? This is called with result nonzero by the Scond patterns in | |
1656 | mips.md. These patterns are called with a target in the mode of | |
1657 | the Scond instruction pattern. Since this must be a constant, we | |
1658 | must use SImode. This means that if RESULT is non-zero, it will | |
1659 | always be an SImode register, even if TARGET_64BIT is true. We | |
1660 | cope with this by calling convert_move rather than emit_move_insn. | |
1661 | This will sometimes lead to an unnecessary extension of the result; | |
1662 | for example: | |
1663 | ||
1664 | long long | |
1665 | foo (long long i) | |
1666 | { | |
1667 | return i < 5; | |
1668 | } | |
1669 | ||
1670 | */ | |
34b650b3 MM |
1671 | |
1672 | rtx | |
1673 | gen_int_relational (test_code, result, cmp0, cmp1, p_invert) | |
1674 | enum rtx_code test_code; /* relational test (EQ, etc) */ | |
1675 | rtx result; /* result to store comp. or 0 if branch */ | |
1676 | rtx cmp0; /* first operand to compare */ | |
1677 | rtx cmp1; /* second operand to compare */ | |
1678 | int *p_invert; /* NULL or ptr to hold whether branch needs */ | |
2296cba3 | 1679 | /* to reverse its test */ |
34b650b3 MM |
1680 | { |
1681 | struct cmp_info { | |
1682 | enum rtx_code test_code; /* code to use in instruction (LT vs. LTU) */ | |
1683 | int const_low; /* low bound of constant we can accept */ | |
1684 | int const_high; /* high bound of constant we can accept */ | |
1685 | int const_add; /* constant to add (convert LE -> LT) */ | |
1686 | int reverse_regs; /* reverse registers in test */ | |
1687 | int invert_const; /* != 0 if invert value if cmp1 is constant */ | |
1688 | int invert_reg; /* != 0 if invert value if cmp1 is register */ | |
55f8a64c | 1689 | int unsignedp; /* != 0 for unsigned comparisons. */ |
34b650b3 MM |
1690 | }; |
1691 | ||
1692 | static struct cmp_info info[ (int)ITEST_MAX ] = { | |
1693 | ||
55f8a64c RS |
1694 | { XOR, 0, 65535, 0, 0, 0, 0, 0 }, /* EQ */ |
1695 | { XOR, 0, 65535, 0, 0, 1, 1, 0 }, /* NE */ | |
1696 | { LT, -32769, 32766, 1, 1, 1, 0, 0 }, /* GT */ | |
1697 | { LT, -32768, 32767, 0, 0, 1, 1, 0 }, /* GE */ | |
1698 | { LT, -32768, 32767, 0, 0, 0, 0, 0 }, /* LT */ | |
1699 | { LT, -32769, 32766, 1, 1, 0, 1, 0 }, /* LE */ | |
1700 | { LTU, -32769, 32766, 1, 1, 1, 0, 1 }, /* GTU */ | |
1701 | { LTU, -32768, 32767, 0, 0, 1, 1, 1 }, /* GEU */ | |
1702 | { LTU, -32768, 32767, 0, 0, 0, 0, 1 }, /* LTU */ | |
1703 | { LTU, -32769, 32766, 1, 1, 0, 1, 1 }, /* LEU */ | |
34b650b3 MM |
1704 | }; |
1705 | ||
1706 | enum internal_test test; | |
147255d8 | 1707 | enum machine_mode mode; |
34b650b3 MM |
1708 | struct cmp_info *p_info; |
1709 | int branch_p; | |
1710 | int eqne_p; | |
1711 | int invert; | |
1712 | rtx reg; | |
1713 | rtx reg2; | |
1714 | ||
1715 | test = map_test_to_internal_test (test_code); | |
1716 | if (test == ITEST_MAX) | |
1717 | abort (); | |
1718 | ||
1719 | p_info = &info[ (int)test ]; | |
1720 | eqne_p = (p_info->test_code == XOR); | |
1721 | ||
147255d8 JW |
1722 | mode = GET_MODE (cmp0); |
1723 | if (mode == VOIDmode) | |
1724 | mode = GET_MODE (cmp1); | |
1725 | ||
34b650b3 MM |
1726 | /* Eliminate simple branches */ |
1727 | branch_p = (result == (rtx)0); | |
1728 | if (branch_p) | |
1729 | { | |
1730 | if (GET_CODE (cmp0) == REG || GET_CODE (cmp0) == SUBREG) | |
1731 | { | |
1732 | /* Comparisons against zero are simple branches */ | |
1733 | if (GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) == 0) | |
1734 | return (rtx)0; | |
1735 | ||
1736 | /* Test for beq/bne. */ | |
1737 | if (eqne_p) | |
1738 | return (rtx)0; | |
1739 | } | |
1740 | ||
2296cba3 | 1741 | /* allocate a pseudo to calculate the value in. */ |
147255d8 | 1742 | result = gen_reg_rtx (mode); |
34b650b3 MM |
1743 | } |
1744 | ||
1745 | /* Make sure we can handle any constants given to us. */ | |
1746 | if (GET_CODE (cmp0) == CONST_INT) | |
147255d8 | 1747 | cmp0 = force_reg (mode, cmp0); |
34b650b3 MM |
1748 | |
1749 | if (GET_CODE (cmp1) == CONST_INT) | |
1750 | { | |
85f5e2b6 | 1751 | HOST_WIDE_INT value = INTVAL (cmp1); |
147255d8 JW |
1752 | if (value < p_info->const_low |
1753 | || value > p_info->const_high | |
1754 | /* ??? Why? And why wasn't the similar code below modified too? */ | |
1755 | || (TARGET_64BIT | |
1756 | && HOST_BITS_PER_WIDE_INT < 64 | |
1757 | && p_info->const_add != 0 | |
1758 | && ((p_info->unsignedp | |
1759 | ? ((unsigned HOST_WIDE_INT) (value + p_info->const_add) | |
1760 | > INTVAL (cmp1)) | |
1761 | : (value + p_info->const_add) > INTVAL (cmp1)) | |
1762 | != (p_info->const_add > 0)))) | |
1763 | cmp1 = force_reg (mode, cmp1); | |
34b650b3 MM |
1764 | } |
1765 | ||
1766 | /* See if we need to invert the result. */ | |
1767 | invert = (GET_CODE (cmp1) == CONST_INT) | |
1768 | ? p_info->invert_const | |
1769 | : p_info->invert_reg; | |
1770 | ||
1771 | if (p_invert != (int *)0) | |
1772 | { | |
1773 | *p_invert = invert; | |
1774 | invert = FALSE; | |
1775 | } | |
1776 | ||
1777 | /* Comparison to constants, may involve adding 1 to change a LT into LE. | |
1778 | Comparison between two registers, may involve switching operands. */ | |
1779 | if (GET_CODE (cmp1) == CONST_INT) | |
1780 | { | |
1781 | if (p_info->const_add != 0) | |
55f8a64c RS |
1782 | { |
1783 | HOST_WIDE_INT new = INTVAL (cmp1) + p_info->const_add; | |
1784 | /* If modification of cmp1 caused overflow, | |
1785 | we would get the wrong answer if we follow the usual path; | |
1786 | thus, x > 0xffffffffu would turn into x > 0u. */ | |
1787 | if ((p_info->unsignedp | |
1788 | ? (unsigned HOST_WIDE_INT) new > INTVAL (cmp1) | |
1789 | : new > INTVAL (cmp1)) | |
1790 | != (p_info->const_add > 0)) | |
d40bb52a RS |
1791 | { |
1792 | /* This test is always true, but if INVERT is true then | |
1793 | the result of the test needs to be inverted so 0 should | |
1794 | be returned instead. */ | |
1795 | emit_move_insn (result, invert ? const0_rtx : const_true_rtx); | |
1796 | return result; | |
1797 | } | |
55f8a64c RS |
1798 | else |
1799 | cmp1 = GEN_INT (new); | |
1800 | } | |
34b650b3 MM |
1801 | } |
1802 | else if (p_info->reverse_regs) | |
1803 | { | |
1804 | rtx temp = cmp0; | |
1805 | cmp0 = cmp1; | |
1806 | cmp1 = temp; | |
1807 | } | |
1808 | ||
34b650b3 | 1809 | if (test == ITEST_NE && GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) == 0) |
bbdb5552 MM |
1810 | reg = cmp0; |
1811 | else | |
1812 | { | |
147255d8 JW |
1813 | reg = (invert || eqne_p) ? gen_reg_rtx (mode) : result; |
1814 | convert_move (reg, gen_rtx (p_info->test_code, mode, cmp0, cmp1), 0); | |
bbdb5552 MM |
1815 | } |
1816 | ||
1817 | if (test == ITEST_NE) | |
34b650b3 | 1818 | { |
147255d8 | 1819 | convert_move (result, gen_rtx (GTU, mode, reg, const0_rtx), 0); |
34b650b3 MM |
1820 | invert = FALSE; |
1821 | } | |
1822 | ||
bbdb5552 | 1823 | else if (test == ITEST_EQ) |
34b650b3 | 1824 | { |
147255d8 JW |
1825 | reg2 = (invert) ? gen_reg_rtx (mode) : result; |
1826 | convert_move (reg2, gen_rtx (LTU, mode, reg, const1_rtx), 0); | |
34b650b3 MM |
1827 | reg = reg2; |
1828 | } | |
1829 | ||
1830 | if (invert) | |
147255d8 | 1831 | convert_move (result, gen_rtx (XOR, mode, reg, const1_rtx), 0); |
34b650b3 MM |
1832 | |
1833 | return result; | |
1834 | } | |
1835 | ||
cee98a59 MM |
1836 | \f |
1837 | /* Emit the common code for doing conditional branches. | |
1838 | operand[0] is the label to jump to. | |
147255d8 | 1839 | The comparison operands are saved away by cmp{si,di,sf,df}. */ |
cee98a59 MM |
1840 | |
1841 | void | |
1842 | gen_conditional_branch (operands, test_code) | |
1843 | rtx operands[]; | |
1844 | enum rtx_code test_code; | |
1845 | { | |
34b650b3 | 1846 | static enum machine_mode mode_map[(int)CMP_MAX][(int)ITEST_MAX] = { |
cee98a59 | 1847 | { /* CMP_SI */ |
34b650b3 MM |
1848 | SImode, /* eq */ |
1849 | SImode, /* ne */ | |
1850 | SImode, /* gt */ | |
1851 | SImode, /* ge */ | |
1852 | SImode, /* lt */ | |
1853 | SImode, /* le */ | |
1854 | SImode, /* gtu */ | |
1855 | SImode, /* geu */ | |
1856 | SImode, /* ltu */ | |
1857 | SImode, /* leu */ | |
cee98a59 | 1858 | }, |
147255d8 JW |
1859 | { /* CMP_DI */ |
1860 | DImode, /* eq */ | |
1861 | DImode, /* ne */ | |
1862 | DImode, /* gt */ | |
1863 | DImode, /* ge */ | |
1864 | DImode, /* lt */ | |
1865 | DImode, /* le */ | |
1866 | DImode, /* gtu */ | |
1867 | DImode, /* geu */ | |
1868 | DImode, /* ltu */ | |
1869 | DImode, /* leu */ | |
1870 | }, | |
cee98a59 MM |
1871 | { /* CMP_SF */ |
1872 | CC_FPmode, /* eq */ | |
34b650b3 | 1873 | CC_REV_FPmode, /* ne */ |
cee98a59 MM |
1874 | CC_FPmode, /* gt */ |
1875 | CC_FPmode, /* ge */ | |
1876 | CC_FPmode, /* lt */ | |
1877 | CC_FPmode, /* le */ | |
1878 | VOIDmode, /* gtu */ | |
1879 | VOIDmode, /* geu */ | |
1880 | VOIDmode, /* ltu */ | |
1881 | VOIDmode, /* leu */ | |
1882 | }, | |
1883 | { /* CMP_DF */ | |
1884 | CC_FPmode, /* eq */ | |
34b650b3 | 1885 | CC_REV_FPmode, /* ne */ |
cee98a59 MM |
1886 | CC_FPmode, /* gt */ |
1887 | CC_FPmode, /* ge */ | |
1888 | CC_FPmode, /* lt */ | |
1889 | CC_FPmode, /* le */ | |
1890 | VOIDmode, /* gtu */ | |
1891 | VOIDmode, /* geu */ | |
1892 | VOIDmode, /* ltu */ | |
1893 | VOIDmode, /* leu */ | |
1894 | }, | |
1895 | }; | |
1896 | ||
1897 | enum machine_mode mode; | |
34b650b3 MM |
1898 | enum cmp_type type = branch_type; |
1899 | rtx cmp0 = branch_cmp[0]; | |
1900 | rtx cmp1 = branch_cmp[1]; | |
1901 | rtx label1 = gen_rtx (LABEL_REF, VOIDmode, operands[0]); | |
1902 | rtx label2 = pc_rtx; | |
1903 | rtx reg = (rtx)0; | |
1904 | int invert = 0; | |
1905 | enum internal_test test = map_test_to_internal_test (test_code); | |
1906 | ||
1907 | if (test == ITEST_MAX) | |
cee98a59 | 1908 | { |
147255d8 | 1909 | mode = word_mode; |
cee98a59 MM |
1910 | goto fail; |
1911 | } | |
1912 | ||
34b650b3 | 1913 | /* Get the machine mode to use (CCmode, CC_EQmode, CC_FPmode, or CC_REV_FPmode). */ |
cee98a59 MM |
1914 | mode = mode_map[(int)type][(int)test]; |
1915 | if (mode == VOIDmode) | |
1916 | goto fail; | |
1917 | ||
147255d8 | 1918 | switch (type) |
cee98a59 MM |
1919 | { |
1920 | default: | |
1921 | goto fail; | |
1922 | ||
1923 | case CMP_SI: | |
147255d8 | 1924 | case CMP_DI: |
34b650b3 MM |
1925 | reg = gen_int_relational (test_code, (rtx)0, cmp0, cmp1, &invert); |
1926 | if (reg != (rtx)0) | |
cee98a59 | 1927 | { |
34b650b3 MM |
1928 | cmp0 = reg; |
1929 | cmp1 = const0_rtx; | |
1930 | test_code = NE; | |
cee98a59 MM |
1931 | } |
1932 | ||
34b650b3 MM |
1933 | /* Make sure not non-zero constant if ==/!= */ |
1934 | else if (GET_CODE (cmp1) == CONST_INT && INTVAL (cmp1) != 0) | |
147255d8 | 1935 | cmp1 = force_reg (mode, cmp1); |
cee98a59 | 1936 | |
cee98a59 MM |
1937 | break; |
1938 | ||
1939 | case CMP_DF: | |
cee98a59 | 1940 | case CMP_SF: |
34b650b3 MM |
1941 | { |
1942 | rtx reg = gen_rtx (REG, mode, FPSW_REGNUM); | |
1943 | emit_insn (gen_rtx (SET, VOIDmode, reg, gen_rtx (test_code, mode, cmp0, cmp1))); | |
1944 | cmp0 = reg; | |
1945 | cmp1 = const0_rtx; | |
1946 | test_code = NE; | |
1947 | } | |
cee98a59 MM |
1948 | break; |
1949 | } | |
85f5e2b6 | 1950 | |
cee98a59 | 1951 | /* Generate the jump */ |
34b650b3 MM |
1952 | if (invert) |
1953 | { | |
1954 | label2 = label1; | |
1955 | label1 = pc_rtx; | |
1956 | } | |
1957 | ||
cee98a59 MM |
1958 | emit_jump_insn (gen_rtx (SET, VOIDmode, |
1959 | pc_rtx, | |
1960 | gen_rtx (IF_THEN_ELSE, VOIDmode, | |
34b650b3 MM |
1961 | gen_rtx (test_code, mode, cmp0, cmp1), |
1962 | label1, | |
1963 | label2))); | |
1964 | ||
cee98a59 MM |
1965 | return; |
1966 | ||
1967 | fail: | |
1968 | abort_with_insn (gen_rtx (test_code, mode, cmp0, cmp1), "bad test"); | |
1969 | } | |
1970 | ||
1971 | \f | |
147255d8 | 1972 | #if 0 |
cee98a59 MM |
1973 | /* Internal code to generate the load and store of one word/short/byte. |
1974 | The load is emitted directly, and the store insn is returned. */ | |
1975 | ||
147255d8 JW |
1976 | #define UNITS_PER_MIPS_DWORD 8 |
1977 | #define UNITS_PER_MIPS_WORD 4 | |
1978 | #define UNITS_PER_MIPS_HWORD 2 | |
1979 | ||
cee98a59 | 1980 | static rtx |
842eb20e | 1981 | block_move_load_store (dest_reg, src_reg, p_bytes, p_offset, align, orig_src) |
2296cba3 RS |
1982 | rtx src_reg; /* register holding source memory address */ |
1983 | rtx dest_reg; /* register holding dest. memory address */ | |
cee98a59 MM |
1984 | int *p_bytes; /* pointer to # bytes remaining */ |
1985 | int *p_offset; /* pointer to current offset */ | |
1986 | int align; /* alignment */ | |
842eb20e | 1987 | rtx orig_src; /* original source for making a reg note */ |
cee98a59 MM |
1988 | { |
1989 | int bytes; /* # bytes remaining */ | |
1990 | int offset; /* offset to use */ | |
1991 | int size; /* size in bytes of load/store */ | |
1992 | enum machine_mode mode; /* mode to use for load/store */ | |
1993 | rtx reg; /* temporary register */ | |
1994 | rtx src_addr; /* source address */ | |
c831afd5 | 1995 | rtx dest_addr; /* destination address */ |
842eb20e MM |
1996 | rtx insn; /* insn of the load */ |
1997 | rtx orig_src_addr; /* original source address */ | |
cee98a59 MM |
1998 | rtx (*load_func)(); /* function to generate load insn */ |
1999 | rtx (*store_func)(); /* function to generate destination insn */ | |
2000 | ||
2001 | bytes = *p_bytes; | |
2002 | if (bytes <= 0 || align <= 0) | |
2003 | abort (); | |
2004 | ||
147255d8 JW |
2005 | if (bytes >= UNITS_PER_MIPS_DWORD && align >= UNIS_PER_MIPS_DWORD) |
2006 | { | |
2007 | mode = DImode; | |
2008 | size = UNITS_PER_MIPS_DWORD; | |
2009 | load_func = gen_movdi; | |
2010 | store_func = gen_movdi; | |
2011 | } | |
2012 | else if (bytes >= UNITS_PER_MIPS_WORD && align >= UNITS_PER_MIPS_WORD) | |
cee98a59 MM |
2013 | { |
2014 | mode = SImode; | |
147255d8 | 2015 | size = UNITS_PER_MIPS_WORD; |
cee98a59 MM |
2016 | load_func = gen_movsi; |
2017 | store_func = gen_movsi; | |
2018 | } | |
2019 | ||
842eb20e | 2020 | #if 0 |
13d39dbc | 2021 | /* Don't generate unaligned moves here, rather defer those to the |
147255d8 JW |
2022 | general movestrsi_internal pattern. |
2023 | If this gets commented back in, then should add the dword equivalent. */ | |
2024 | else if (bytes >= UNITS_PER_MIPS_WORD) | |
cee98a59 MM |
2025 | { |
2026 | mode = SImode; | |
147255d8 | 2027 | size = UNITS_PER_MIPS_WORD; |
cee98a59 MM |
2028 | load_func = gen_movsi_ulw; |
2029 | store_func = gen_movsi_usw; | |
2030 | } | |
842eb20e | 2031 | #endif |
cee98a59 | 2032 | |
147255d8 | 2033 | else if (bytes >= UNITS_PER_MIPS_SHORT && align >= UNITS_PER_MIPS_SHORT) |
cee98a59 MM |
2034 | { |
2035 | mode = HImode; | |
147255d8 | 2036 | size = UNITS_PER_MIPS_SHORT; |
cee98a59 MM |
2037 | load_func = gen_movhi; |
2038 | store_func = gen_movhi; | |
2039 | } | |
2040 | ||
2041 | else | |
2042 | { | |
2043 | mode = QImode; | |
2044 | size = 1; | |
2045 | load_func = gen_movqi; | |
2046 | store_func = gen_movqi; | |
2047 | } | |
2048 | ||
2049 | offset = *p_offset; | |
2050 | *p_offset = offset + size; | |
2051 | *p_bytes = bytes - size; | |
2052 | ||
2053 | if (offset == 0) | |
2054 | { | |
2055 | src_addr = src_reg; | |
2056 | dest_addr = dest_reg; | |
2057 | } | |
2058 | else | |
2059 | { | |
0fb5ac6f MM |
2060 | src_addr = gen_rtx (PLUS, Pmode, src_reg, GEN_INT (offset)); |
2061 | dest_addr = gen_rtx (PLUS, Pmode, dest_reg, GEN_INT (offset)); | |
cee98a59 MM |
2062 | } |
2063 | ||
2064 | reg = gen_reg_rtx (mode); | |
842eb20e MM |
2065 | insn = emit_insn ((*load_func) (reg, gen_rtx (MEM, mode, src_addr))); |
2066 | orig_src_addr = XEXP (orig_src, 0); | |
2067 | if (CONSTANT_P (orig_src_addr)) | |
2068 | REG_NOTES (insn) = gen_rtx (EXPR_LIST, REG_EQUIV, | |
2069 | plus_constant (orig_src_addr, offset), | |
2070 | REG_NOTES (insn)); | |
2071 | ||
cee98a59 MM |
2072 | return (*store_func) (gen_rtx (MEM, mode, dest_addr), reg); |
2073 | } | |
0fb5ac6f | 2074 | #endif |
cee98a59 MM |
2075 | |
2076 | \f | |
2077 | /* Write a series of loads/stores to move some bytes. Generate load/stores as follows: | |
2078 | ||
2079 | load 1 | |
2080 | load 2 | |
2081 | load 3 | |
2082 | store 1 | |
2083 | load 4 | |
2084 | store 2 | |
2085 | load 5 | |
2086 | store 3 | |
2087 | ... | |
2088 | ||
2089 | This way, no NOP's are needed, except at the end, and only | |
2090 | two temp registers are needed. Two delay slots are used | |
2091 | in deference to the R4000. */ | |
2092 | ||
0fb5ac6f | 2093 | #if 0 |
cee98a59 | 2094 | static void |
842eb20e | 2095 | block_move_sequence (dest_reg, src_reg, bytes, align, orig_src) |
cee98a59 MM |
2096 | rtx dest_reg; /* register holding destination address */ |
2097 | rtx src_reg; /* register holding source address */ | |
2098 | int bytes; /* # bytes to move */ | |
2099 | int align; /* max alignment to assume */ | |
842eb20e | 2100 | rtx orig_src; /* original source for making a reg note */ |
cee98a59 MM |
2101 | { |
2102 | int offset = 0; | |
2103 | rtx prev2_store = (rtx)0; | |
2104 | rtx prev_store = (rtx)0; | |
2105 | rtx cur_store = (rtx)0; | |
2106 | ||
2107 | while (bytes > 0) | |
2108 | { | |
2109 | /* Is there a store to do? */ | |
2110 | if (prev2_store) | |
2111 | emit_insn (prev2_store); | |
2112 | ||
2113 | prev2_store = prev_store; | |
2114 | prev_store = cur_store; | |
842eb20e MM |
2115 | cur_store = block_move_load_store (dest_reg, src_reg, |
2116 | &bytes, &offset, | |
2117 | align, orig_src); | |
cee98a59 MM |
2118 | } |
2119 | ||
2120 | /* Finish up last three stores. */ | |
2121 | if (prev2_store) | |
2122 | emit_insn (prev2_store); | |
2123 | ||
2124 | if (prev_store) | |
2125 | emit_insn (prev_store); | |
2126 | ||
2127 | if (cur_store) | |
2128 | emit_insn (cur_store); | |
2129 | } | |
0fb5ac6f | 2130 | #endif |
cee98a59 MM |
2131 | |
2132 | \f | |
2133 | /* Write a loop to move a constant number of bytes. Generate load/stores as follows: | |
2134 | ||
2135 | do { | |
2136 | temp1 = src[0]; | |
2137 | temp2 = src[1]; | |
2138 | ... | |
2139 | temp<last> = src[MAX_MOVE_REGS-1]; | |
cee98a59 MM |
2140 | dest[0] = temp1; |
2141 | dest[1] = temp2; | |
2142 | ... | |
2143 | dest[MAX_MOVE_REGS-1] = temp<last>; | |
842eb20e | 2144 | src += MAX_MOVE_REGS; |
cee98a59 MM |
2145 | dest += MAX_MOVE_REGS; |
2146 | } while (src != final); | |
2147 | ||
2148 | This way, no NOP's are needed, and only MAX_MOVE_REGS+3 temp | |
2149 | registers are needed. | |
2150 | ||
2151 | Aligned moves move MAX_MOVE_REGS*4 bytes every (2*MAX_MOVE_REGS)+3 | |
2152 | cycles, unaligned moves move MAX_MOVE_REGS*4 bytes every | |
2153 | (4*MAX_MOVE_REGS)+3 cycles, assuming no cache misses. */ | |
2154 | ||
2155 | #define MAX_MOVE_REGS 4 | |
2156 | #define MAX_MOVE_BYTES (MAX_MOVE_REGS * UNITS_PER_WORD) | |
2157 | ||
147255d8 JW |
2158 | /* ??? Should add code to use DWORD load/stores. */ |
2159 | ||
cee98a59 | 2160 | static void |
842eb20e | 2161 | block_move_loop (dest_reg, src_reg, bytes, align, orig_src) |
cee98a59 MM |
2162 | rtx dest_reg; /* register holding destination address */ |
2163 | rtx src_reg; /* register holding source address */ | |
2164 | int bytes; /* # bytes to move */ | |
2165 | int align; /* alignment */ | |
842eb20e | 2166 | rtx orig_src; /* original source for making a reg note */ |
cee98a59 | 2167 | { |
842eb20e MM |
2168 | rtx dest_mem = gen_rtx (MEM, BLKmode, dest_reg); |
2169 | rtx src_mem = gen_rtx (MEM, BLKmode, src_reg); | |
0fb5ac6f | 2170 | rtx align_rtx = GEN_INT (align); |
cee98a59 MM |
2171 | rtx label; |
2172 | rtx final_src; | |
2173 | rtx bytes_rtx; | |
cee98a59 | 2174 | int leftover; |
cee98a59 MM |
2175 | |
2176 | if (bytes < 2*MAX_MOVE_BYTES) | |
2177 | abort (); | |
2178 | ||
2179 | leftover = bytes % MAX_MOVE_BYTES; | |
2180 | bytes -= leftover; | |
2181 | ||
2182 | label = gen_label_rtx (); | |
2183 | final_src = gen_reg_rtx (Pmode); | |
0fb5ac6f | 2184 | bytes_rtx = GEN_INT (bytes); |
cee98a59 MM |
2185 | |
2186 | if (bytes > 0x7fff) | |
2187 | { | |
147255d8 JW |
2188 | if (TARGET_LONG64) |
2189 | { | |
2190 | emit_insn (gen_movdi (final_src, bytes_rtx)); | |
2191 | emit_insn (gen_adddi3 (final_src, final_src, src_reg)); | |
2192 | } | |
2193 | else | |
2194 | { | |
2195 | emit_insn (gen_movsi (final_src, bytes_rtx)); | |
2196 | emit_insn (gen_addsi3 (final_src, final_src, src_reg)); | |
2197 | } | |
cee98a59 MM |
2198 | } |
2199 | else | |
147255d8 JW |
2200 | { |
2201 | if (TARGET_LONG64) | |
2202 | emit_insn (gen_adddi3 (final_src, src_reg, bytes_rtx)); | |
2203 | else | |
2204 | emit_insn (gen_addsi3 (final_src, src_reg, bytes_rtx)); | |
2205 | } | |
cee98a59 MM |
2206 | |
2207 | emit_label (label); | |
2208 | ||
0fb5ac6f | 2209 | bytes_rtx = GEN_INT (MAX_MOVE_BYTES); |
842eb20e | 2210 | emit_insn (gen_movstrsi_internal (dest_mem, src_mem, bytes_rtx, align_rtx)); |
147255d8 JW |
2211 | if (TARGET_LONG64) |
2212 | { | |
2213 | emit_insn (gen_adddi3 (src_reg, src_reg, bytes_rtx)); | |
2214 | emit_insn (gen_adddi3 (dest_reg, dest_reg, bytes_rtx)); | |
2215 | emit_insn (gen_cmpdi (src_reg, final_src)); | |
2216 | } | |
2217 | else | |
2218 | { | |
2219 | emit_insn (gen_addsi3 (src_reg, src_reg, bytes_rtx)); | |
2220 | emit_insn (gen_addsi3 (dest_reg, dest_reg, bytes_rtx)); | |
2221 | emit_insn (gen_cmpsi (src_reg, final_src)); | |
2222 | } | |
cee98a59 MM |
2223 | emit_jump_insn (gen_bne (label)); |
2224 | ||
2225 | if (leftover) | |
842eb20e | 2226 | emit_insn (gen_movstrsi_internal (dest_mem, src_mem, |
0fb5ac6f | 2227 | GEN_INT (leftover), |
842eb20e | 2228 | align_rtx)); |
cee98a59 MM |
2229 | } |
2230 | ||
2231 | \f | |
2232 | /* Use a library function to move some bytes. */ | |
2233 | ||
2234 | static void | |
2235 | block_move_call (dest_reg, src_reg, bytes_rtx) | |
2236 | rtx dest_reg; | |
2237 | rtx src_reg; | |
2238 | rtx bytes_rtx; | |
2239 | { | |
147255d8 JW |
2240 | /* We want to pass the size as Pmode, which will normally be SImode |
2241 | but will be DImode if we are using 64 bit longs and pointers. */ | |
2242 | if (GET_MODE (bytes_rtx) != VOIDmode | |
2243 | && GET_MODE (bytes_rtx) != Pmode) | |
2244 | bytes_rtx = convert_to_mode (Pmode, bytes_rtx, TRUE); | |
2245 | ||
cee98a59 MM |
2246 | #ifdef TARGET_MEM_FUNCTIONS |
2247 | emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "memcpy"), 0, | |
2248 | VOIDmode, 3, | |
2249 | dest_reg, Pmode, | |
2250 | src_reg, Pmode, | |
147255d8 | 2251 | bytes_rtx, Pmode); |
cee98a59 MM |
2252 | #else |
2253 | emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "bcopy"), 0, | |
2254 | VOIDmode, 3, | |
2255 | src_reg, Pmode, | |
2256 | dest_reg, Pmode, | |
147255d8 | 2257 | bytes_rtx, Pmode); |
cee98a59 MM |
2258 | #endif |
2259 | } | |
2260 | ||
2261 | \f | |
2262 | /* Expand string/block move operations. | |
2263 | ||
2264 | operands[0] is the pointer to the destination. | |
2265 | operands[1] is the pointer to the source. | |
2266 | operands[2] is the number of bytes to move. | |
2267 | operands[3] is the alignment. */ | |
2268 | ||
2269 | void | |
2270 | expand_block_move (operands) | |
2271 | rtx operands[]; | |
2272 | { | |
2273 | rtx bytes_rtx = operands[2]; | |
842eb20e | 2274 | rtx align_rtx = operands[3]; |
cee98a59 MM |
2275 | int constp = (GET_CODE (bytes_rtx) == CONST_INT); |
2276 | int bytes = (constp ? INTVAL (bytes_rtx) : 0); | |
842eb20e MM |
2277 | int align = INTVAL (align_rtx); |
2278 | rtx orig_src = operands[1]; | |
cee98a59 MM |
2279 | rtx src_reg; |
2280 | rtx dest_reg; | |
2281 | ||
2282 | if (constp && bytes <= 0) | |
2283 | return; | |
2284 | ||
842eb20e MM |
2285 | if (align > UNITS_PER_WORD) |
2286 | align = UNITS_PER_WORD; | |
2287 | ||
cee98a59 | 2288 | /* Move the address into scratch registers. */ |
c831afd5 | 2289 | dest_reg = copy_addr_to_reg (XEXP (operands[0], 0)); |
842eb20e | 2290 | src_reg = copy_addr_to_reg (XEXP (orig_src, 0)); |
cee98a59 MM |
2291 | |
2292 | if (TARGET_MEMCPY) | |
2293 | block_move_call (dest_reg, src_reg, bytes_rtx); | |
2294 | ||
842eb20e MM |
2295 | #if 0 |
2296 | else if (constp && bytes <= 3*align) | |
2297 | block_move_sequence (dest_reg, src_reg, bytes, align, orig_src); | |
2298 | #endif | |
2299 | ||
cee98a59 | 2300 | else if (constp && bytes <= 2*MAX_MOVE_BYTES) |
842eb20e MM |
2301 | emit_insn (gen_movstrsi_internal (gen_rtx (MEM, BLKmode, dest_reg), |
2302 | gen_rtx (MEM, BLKmode, src_reg), | |
2303 | bytes_rtx, align_rtx)); | |
cee98a59 MM |
2304 | |
2305 | else if (constp && align >= UNITS_PER_WORD && optimize) | |
842eb20e | 2306 | block_move_loop (dest_reg, src_reg, bytes, align, orig_src); |
cee98a59 MM |
2307 | |
2308 | else if (constp && optimize) | |
2309 | { | |
2310 | /* If the alignment is not word aligned, generate a test at | |
2311 | runtime, to see whether things wound up aligned, and we | |
2312 | can use the faster lw/sw instead ulw/usw. */ | |
2313 | ||
2314 | rtx temp = gen_reg_rtx (Pmode); | |
2315 | rtx aligned_label = gen_label_rtx (); | |
2316 | rtx join_label = gen_label_rtx (); | |
2317 | int leftover = bytes % MAX_MOVE_BYTES; | |
2318 | ||
2319 | bytes -= leftover; | |
2320 | ||
147255d8 JW |
2321 | if (TARGET_LONG64) |
2322 | { | |
2323 | emit_insn (gen_iordi3 (temp, src_reg, dest_reg)); | |
2324 | emit_insn (gen_anddi3 (temp, temp, GEN_INT (UNITS_PER_WORD-1))); | |
2325 | emit_insn (gen_cmpdi (temp, const0_rtx)); | |
2326 | } | |
2327 | else | |
2328 | { | |
2329 | emit_insn (gen_iorsi3 (temp, src_reg, dest_reg)); | |
2330 | emit_insn (gen_andsi3 (temp, temp, GEN_INT (UNITS_PER_WORD-1))); | |
2331 | emit_insn (gen_cmpsi (temp, const0_rtx)); | |
2332 | } | |
cee98a59 MM |
2333 | emit_jump_insn (gen_beq (aligned_label)); |
2334 | ||
2335 | /* Unaligned loop. */ | |
842eb20e | 2336 | block_move_loop (dest_reg, src_reg, bytes, 1, orig_src); |
cee98a59 MM |
2337 | emit_jump_insn (gen_jump (join_label)); |
2338 | emit_barrier (); | |
2339 | ||
2340 | /* Aligned loop. */ | |
2341 | emit_label (aligned_label); | |
842eb20e | 2342 | block_move_loop (dest_reg, src_reg, bytes, UNITS_PER_WORD, orig_src); |
cee98a59 MM |
2343 | emit_label (join_label); |
2344 | ||
2345 | /* Bytes at the end of the loop. */ | |
2346 | if (leftover) | |
842eb20e MM |
2347 | { |
2348 | #if 0 | |
2349 | if (leftover <= 3*align) | |
2350 | block_move_sequence (dest_reg, src_reg, leftover, align, orig_src); | |
2351 | ||
2352 | else | |
2353 | #endif | |
2354 | emit_insn (gen_movstrsi_internal (gen_rtx (MEM, BLKmode, dest_reg), | |
2355 | gen_rtx (MEM, BLKmode, src_reg), | |
0fb5ac6f MM |
2356 | GEN_INT (leftover), |
2357 | GEN_INT (align))); | |
842eb20e | 2358 | } |
cee98a59 MM |
2359 | } |
2360 | ||
2361 | else | |
2362 | block_move_call (dest_reg, src_reg, bytes_rtx); | |
2363 | } | |
2364 | ||
842eb20e MM |
2365 | \f |
2366 | /* Emit load/stores for a small constant block_move. | |
2367 | ||
2368 | operands[0] is the memory address of the destination. | |
2369 | operands[1] is the memory address of the source. | |
2370 | operands[2] is the number of bytes to move. | |
2371 | operands[3] is the alignment. | |
2372 | operands[4] is a temp register. | |
2373 | operands[5] is a temp register. | |
c4b9be8e MM |
2374 | ... |
2375 | operands[3+num_regs] is the last temp register. | |
2376 | ||
2377 | The block move type can be one of the following: | |
2378 | BLOCK_MOVE_NORMAL Do all of the block move. | |
2379 | BLOCK_MOVE_NOT_LAST Do all but the last store. | |
2380 | BLOCK_MOVE_LAST Do just the last store. */ | |
842eb20e MM |
2381 | |
2382 | char * | |
c4b9be8e | 2383 | output_block_move (insn, operands, num_regs, move_type) |
842eb20e MM |
2384 | rtx insn; |
2385 | rtx operands[]; | |
2386 | int num_regs; | |
c4b9be8e | 2387 | enum block_move_type move_type; |
842eb20e MM |
2388 | { |
2389 | rtx dest_reg = XEXP (operands[0], 0); | |
2390 | rtx src_reg = XEXP (operands[1], 0); | |
2391 | int bytes = INTVAL (operands[2]); | |
2392 | int align = INTVAL (operands[3]); | |
2393 | int num = 0; | |
2394 | int offset = 0; | |
0cebb05d | 2395 | int use_lwl_lwr = FALSE; |
c6f3187f | 2396 | int last_operand = num_regs+4; |
4bb89a8e | 2397 | int safe_regs = 4; |
842eb20e MM |
2398 | int i; |
2399 | rtx xoperands[10]; | |
2400 | ||
2401 | struct { | |
2402 | char *load; /* load insn without nop */ | |
2403 | char *load_nop; /* load insn with trailing nop */ | |
2404 | char *store; /* store insn */ | |
c4b9be8e MM |
2405 | char *final; /* if last_store used: NULL or swr */ |
2406 | char *last_store; /* last store instruction */ | |
842eb20e MM |
2407 | int offset; /* current offset */ |
2408 | enum machine_mode mode; /* mode to use on (MEM) */ | |
2409 | } load_store[4]; | |
2410 | ||
c4b9be8e | 2411 | /* Detect a bug in GCC, where it can give us a register |
4bb89a8e MM |
2412 | the same as one of the addressing registers and reduce |
2413 | the number of registers available. */ | |
2414 | for (i = 4; | |
2415 | i < last_operand && safe_regs < (sizeof(xoperands) / sizeof(xoperands[0])); | |
2416 | i++) | |
c6f3187f | 2417 | { |
4bb89a8e MM |
2418 | if (!reg_mentioned_p (operands[i], operands[0]) |
2419 | && !reg_mentioned_p (operands[i], operands[1])) | |
2420 | ||
2421 | xoperands[safe_regs++] = operands[i]; | |
2422 | } | |
2423 | ||
2424 | if (safe_regs < last_operand) | |
2425 | { | |
2426 | xoperands[0] = operands[0]; | |
2427 | xoperands[1] = operands[1]; | |
2428 | xoperands[2] = operands[2]; | |
2429 | xoperands[3] = operands[3]; | |
2430 | return output_block_move (insn, xoperands, safe_regs-4, move_type); | |
c6f3187f RS |
2431 | } |
2432 | ||
842eb20e MM |
2433 | /* If we are given global or static addresses, and we would be |
2434 | emitting a few instructions, try to save time by using a | |
2435 | temporary register for the pointer. */ | |
4bb89a8e | 2436 | if (num_regs > 2 && (bytes > 2*align || move_type != BLOCK_MOVE_NORMAL)) |
842eb20e MM |
2437 | { |
2438 | if (CONSTANT_P (src_reg)) | |
2439 | { | |
4e09f580 MM |
2440 | if (TARGET_STATS) |
2441 | mips_count_memory_refs (operands[1], 1); | |
2442 | ||
c4b9be8e MM |
2443 | src_reg = operands[ 3 + num_regs-- ]; |
2444 | if (move_type != BLOCK_MOVE_LAST) | |
2445 | { | |
2446 | xoperands[1] = operands[1]; | |
2447 | xoperands[0] = src_reg; | |
2448 | output_asm_insn ("la\t%0,%1", xoperands); | |
2449 | } | |
842eb20e MM |
2450 | } |
2451 | ||
2452 | if (CONSTANT_P (dest_reg)) | |
2453 | { | |
4e09f580 MM |
2454 | if (TARGET_STATS) |
2455 | mips_count_memory_refs (operands[0], 1); | |
2456 | ||
c4b9be8e MM |
2457 | dest_reg = operands[ 3 + num_regs-- ]; |
2458 | if (move_type != BLOCK_MOVE_LAST) | |
2459 | { | |
2460 | xoperands[1] = operands[0]; | |
2461 | xoperands[0] = dest_reg; | |
2462 | output_asm_insn ("la\t%0,%1", xoperands); | |
2463 | } | |
842eb20e MM |
2464 | } |
2465 | } | |
2466 | ||
2467 | if (num_regs > (sizeof (load_store) / sizeof (load_store[0]))) | |
2468 | num_regs = (sizeof (load_store) / sizeof (load_store[0])); | |
2469 | ||
2470 | else if (num_regs < 1) | |
4bb89a8e | 2471 | abort_with_insn (insn, "Cannot do block move, not enough scratch registers"); |
842eb20e | 2472 | |
842eb20e MM |
2473 | while (bytes > 0) |
2474 | { | |
2475 | load_store[num].offset = offset; | |
2476 | ||
147255d8 JW |
2477 | if (TARGET_64BIT && bytes >= 8 && align >= 8) |
2478 | { | |
2479 | load_store[num].load = "ld\t%0,%1"; | |
2480 | load_store[num].load_nop = "ld\t%0,%1%#"; | |
2481 | load_store[num].store = "sd\t%0,%1"; | |
2482 | load_store[num].last_store = "sd\t%0,%1"; | |
2483 | load_store[num].final = (char *)0; | |
2484 | load_store[num].mode = DImode; | |
2485 | offset += 8; | |
2486 | bytes -= 8; | |
2487 | } | |
2488 | ||
2489 | /* ??? Fails because of a MIPS assembler bug? */ | |
2490 | else if (TARGET_64BIT && bytes >= 8) | |
2491 | { | |
96abdcb1 ILT |
2492 | if (BYTES_BIG_ENDIAN) |
2493 | { | |
2494 | load_store[num].load = "ldl\t%0,%1\n\tldr\t%0,%2"; | |
2495 | load_store[num].load_nop = "ldl\t%0,%1\n\tldr\t%0,%2%#"; | |
2496 | load_store[num].store = "sdl\t%0,%1\n\tsdr\t%0,%2"; | |
2497 | load_store[num].last_store = "sdr\t%0,%2"; | |
2498 | load_store[num].final = "sdl\t%0,%1"; | |
2499 | } | |
2500 | else | |
2501 | { | |
2502 | load_store[num].load = "ldl\t%0,%2\n\tldr\t%0,%1"; | |
2503 | load_store[num].load_nop = "ldl\t%0,%2\n\tldr\t%0,%1%#"; | |
2504 | load_store[num].store = "sdl\t%0,%2\n\tsdr\t%0,%1"; | |
2505 | load_store[num].last_store = "sdr\t%0,%1"; | |
2506 | load_store[num].final = "sdl\t%0,%2"; | |
2507 | } | |
147255d8 JW |
2508 | load_store[num].mode = DImode; |
2509 | offset += 8; | |
2510 | bytes -= 8; | |
2511 | use_lwl_lwr = TRUE; | |
2512 | } | |
2513 | ||
2514 | else if (bytes >= 4 && align >= 4) | |
842eb20e | 2515 | { |
c4b9be8e MM |
2516 | load_store[num].load = "lw\t%0,%1"; |
2517 | load_store[num].load_nop = "lw\t%0,%1%#"; | |
2518 | load_store[num].store = "sw\t%0,%1"; | |
2519 | load_store[num].last_store = "sw\t%0,%1"; | |
2520 | load_store[num].final = (char *)0; | |
2521 | load_store[num].mode = SImode; | |
147255d8 JW |
2522 | offset += 4; |
2523 | bytes -= 4; | |
842eb20e MM |
2524 | } |
2525 | ||
147255d8 | 2526 | else if (bytes >= 4) |
0cebb05d | 2527 | { |
96abdcb1 ILT |
2528 | if (BYTES_BIG_ENDIAN) |
2529 | { | |
2530 | load_store[num].load = "lwl\t%0,%1\n\tlwr\t%0,%2"; | |
2531 | load_store[num].load_nop = "lwl\t%0,%1\n\tlwr\t%0,%2%#"; | |
2532 | load_store[num].store = "swl\t%0,%1\n\tswr\t%0,%2"; | |
2533 | load_store[num].last_store = "swr\t%0,%2"; | |
2534 | load_store[num].final = "swl\t%0,%1"; | |
2535 | } | |
2536 | else | |
2537 | { | |
2538 | load_store[num].load = "lwl\t%0,%2\n\tlwr\t%0,%1"; | |
2539 | load_store[num].load_nop = "lwl\t%0,%2\n\tlwr\t%0,%1%#"; | |
2540 | load_store[num].store = "swl\t%0,%2\n\tswr\t%0,%1"; | |
2541 | load_store[num].last_store = "swr\t%0,%1"; | |
2542 | load_store[num].final = "swl\t%0,%2"; | |
2543 | } | |
0cebb05d | 2544 | load_store[num].mode = SImode; |
147255d8 JW |
2545 | offset += 4; |
2546 | bytes -= 4; | |
0cebb05d MM |
2547 | use_lwl_lwr = TRUE; |
2548 | } | |
2549 | ||
147255d8 | 2550 | else if (bytes >= 2 && align >= 2) |
842eb20e | 2551 | { |
c4b9be8e MM |
2552 | load_store[num].load = "lh\t%0,%1"; |
2553 | load_store[num].load_nop = "lh\t%0,%1%#"; | |
2554 | load_store[num].store = "sh\t%0,%1"; | |
2555 | load_store[num].last_store = "sh\t%0,%1"; | |
2556 | load_store[num].final = (char *)0; | |
c4b9be8e | 2557 | load_store[num].mode = HImode; |
147255d8 JW |
2558 | offset += 2; |
2559 | bytes -= 2; | |
842eb20e MM |
2560 | } |
2561 | ||
2562 | else | |
2563 | { | |
c4b9be8e MM |
2564 | load_store[num].load = "lb\t%0,%1"; |
2565 | load_store[num].load_nop = "lb\t%0,%1%#"; | |
2566 | load_store[num].store = "sb\t%0,%1"; | |
2567 | load_store[num].last_store = "sb\t%0,%1"; | |
2568 | load_store[num].final = (char *)0; | |
2569 | load_store[num].mode = QImode; | |
842eb20e MM |
2570 | offset++; |
2571 | bytes--; | |
2572 | } | |
2573 | ||
c4b9be8e | 2574 | if (TARGET_STATS && move_type != BLOCK_MOVE_LAST) |
4e09f580 | 2575 | { |
c4b9be8e MM |
2576 | dslots_load_total++; |
2577 | dslots_load_filled++; | |
2578 | ||
4e09f580 MM |
2579 | if (CONSTANT_P (src_reg)) |
2580 | mips_count_memory_refs (src_reg, 1); | |
2581 | ||
2582 | if (CONSTANT_P (dest_reg)) | |
2583 | mips_count_memory_refs (dest_reg, 1); | |
2584 | } | |
2585 | ||
842eb20e MM |
2586 | /* Emit load/stores now if we have run out of registers or are |
2587 | at the end of the move. */ | |
2588 | ||
4e09f580 | 2589 | if (++num == num_regs || bytes == 0) |
842eb20e MM |
2590 | { |
2591 | /* If only load/store, we need a NOP after the load. */ | |
2592 | if (num == 1) | |
4e09f580 MM |
2593 | { |
2594 | load_store[0].load = load_store[0].load_nop; | |
c4b9be8e MM |
2595 | if (TARGET_STATS && move_type != BLOCK_MOVE_LAST) |
2596 | dslots_load_filled--; | |
4e09f580 | 2597 | } |
842eb20e | 2598 | |
c4b9be8e | 2599 | if (move_type != BLOCK_MOVE_LAST) |
842eb20e | 2600 | { |
c4b9be8e MM |
2601 | for (i = 0; i < num; i++) |
2602 | { | |
2603 | int offset; | |
0cebb05d | 2604 | |
c4b9be8e MM |
2605 | if (!operands[i+4]) |
2606 | abort (); | |
842eb20e | 2607 | |
c4b9be8e MM |
2608 | if (GET_MODE (operands[i+4]) != load_store[i].mode) |
2609 | operands[i+4] = gen_rtx (REG, load_store[i].mode, REGNO (operands[i+4])); | |
842eb20e | 2610 | |
c4b9be8e MM |
2611 | offset = load_store[i].offset; |
2612 | xoperands[0] = operands[i+4]; | |
2613 | xoperands[1] = gen_rtx (MEM, load_store[i].mode, | |
2614 | plus_constant (src_reg, offset)); | |
0cebb05d | 2615 | |
c4b9be8e | 2616 | if (use_lwl_lwr) |
147255d8 JW |
2617 | { |
2618 | int extra_offset; | |
2619 | extra_offset = GET_MODE_SIZE (load_store[i].mode) - 1; | |
2620 | xoperands[2] = gen_rtx (MEM, load_store[i].mode, | |
2621 | plus_constant (src_reg, | |
2622 | extra_offset | |
2623 | + offset)); | |
2624 | } | |
0cebb05d | 2625 | |
c4b9be8e MM |
2626 | output_asm_insn (load_store[i].load, xoperands); |
2627 | } | |
842eb20e MM |
2628 | } |
2629 | ||
2630 | for (i = 0; i < num; i++) | |
2631 | { | |
c4b9be8e | 2632 | int last_p = (i == num-1 && bytes == 0); |
0cebb05d | 2633 | int offset = load_store[i].offset; |
c4b9be8e | 2634 | |
842eb20e MM |
2635 | xoperands[0] = operands[i+4]; |
2636 | xoperands[1] = gen_rtx (MEM, load_store[i].mode, | |
0cebb05d MM |
2637 | plus_constant (dest_reg, offset)); |
2638 | ||
2639 | ||
2640 | if (use_lwl_lwr) | |
147255d8 JW |
2641 | { |
2642 | int extra_offset; | |
2643 | extra_offset = GET_MODE_SIZE (load_store[i].mode) - 1; | |
2644 | xoperands[2] = gen_rtx (MEM, load_store[i].mode, | |
2645 | plus_constant (dest_reg, | |
2646 | extra_offset | |
2647 | + offset)); | |
2648 | } | |
0cebb05d | 2649 | |
c4b9be8e MM |
2650 | if (move_type == BLOCK_MOVE_NORMAL) |
2651 | output_asm_insn (load_store[i].store, xoperands); | |
2652 | ||
2653 | else if (move_type == BLOCK_MOVE_NOT_LAST) | |
2654 | { | |
2655 | if (!last_p) | |
2656 | output_asm_insn (load_store[i].store, xoperands); | |
2657 | ||
2658 | else if (load_store[i].final != (char *)0) | |
2659 | output_asm_insn (load_store[i].final, xoperands); | |
2660 | } | |
2661 | ||
2662 | else if (last_p) | |
2663 | output_asm_insn (load_store[i].last_store, xoperands); | |
842eb20e MM |
2664 | } |
2665 | ||
2666 | num = 0; /* reset load_store */ | |
147255d8 | 2667 | use_lwl_lwr = FALSE; |
842eb20e MM |
2668 | } |
2669 | } | |
2670 | ||
842eb20e MM |
2671 | return ""; |
2672 | } | |
2673 | ||
cee98a59 MM |
2674 | \f |
2675 | /* Argument support functions. */ | |
2676 | ||
2677 | /* Initialize CUMULATIVE_ARGS for a function. */ | |
2678 | ||
2679 | void | |
2680 | init_cumulative_args (cum, fntype, libname) | |
2681 | CUMULATIVE_ARGS *cum; /* argument info to initialize */ | |
2682 | tree fntype; /* tree ptr for function decl */ | |
2683 | rtx libname; /* SYMBOL_REF of library name or 0 */ | |
2684 | { | |
3f1f8d8c | 2685 | static CUMULATIVE_ARGS zero_cum; |
cee98a59 MM |
2686 | tree param, next_param; |
2687 | ||
2688 | if (TARGET_DEBUG_E_MODE) | |
6cb6c3b3 MM |
2689 | { |
2690 | fprintf (stderr, "\ninit_cumulative_args, fntype = 0x%.8lx", (long)fntype); | |
2691 | if (!fntype) | |
2692 | fputc ('\n', stderr); | |
2693 | ||
2694 | else | |
2695 | { | |
2696 | tree ret_type = TREE_TYPE (fntype); | |
2697 | fprintf (stderr, ", fntype code = %s, ret code = %s\n", | |
2698 | tree_code_name[ (int)TREE_CODE (fntype) ], | |
2699 | tree_code_name[ (int)TREE_CODE (ret_type) ]); | |
2700 | } | |
2701 | } | |
cee98a59 | 2702 | |
3f1f8d8c | 2703 | *cum = zero_cum; |
cee98a59 MM |
2704 | |
2705 | /* Determine if this function has variable arguments. This is | |
2706 | indicated by the last argument being 'void_type_mode' if there | |
2707 | are no variable arguments. The standard MIPS calling sequence | |
2708 | passes all arguments in the general purpose registers in this | |
2709 | case. */ | |
2710 | ||
2711 | for (param = (fntype) ? TYPE_ARG_TYPES (fntype) : 0; | |
2712 | param != (tree)0; | |
2713 | param = next_param) | |
2714 | { | |
2715 | next_param = TREE_CHAIN (param); | |
2716 | if (next_param == (tree)0 && TREE_VALUE (param) != void_type_node) | |
2717 | cum->gp_reg_found = 1; | |
2718 | } | |
cee98a59 MM |
2719 | } |
2720 | ||
2721 | /* Advance the argument to the next argument position. */ | |
2722 | ||
2723 | void | |
2724 | function_arg_advance (cum, mode, type, named) | |
2725 | CUMULATIVE_ARGS *cum; /* current arg information */ | |
2726 | enum machine_mode mode; /* current arg mode */ | |
2727 | tree type; /* type of the argument or 0 if lib support */ | |
0fb5ac6f | 2728 | int named; /* whether or not the argument was named */ |
cee98a59 MM |
2729 | { |
2730 | if (TARGET_DEBUG_E_MODE) | |
2731 | fprintf (stderr, | |
3f1f8d8c | 2732 | "function_adv( {gp reg found = %d, arg # = %2d, words = %2d}, %4s, 0x%.8x, %d )\n\n", |
cee98a59 MM |
2733 | cum->gp_reg_found, cum->arg_number, cum->arg_words, GET_MODE_NAME (mode), |
2734 | type, named); | |
2735 | ||
2736 | cum->arg_number++; | |
2737 | switch (mode) | |
2738 | { | |
b4b93495 | 2739 | case VOIDmode: |
cee98a59 MM |
2740 | break; |
2741 | ||
b4b93495 RS |
2742 | default: |
2743 | if (GET_MODE_CLASS (mode) != MODE_COMPLEX_INT | |
2744 | && GET_MODE_CLASS (mode) != MODE_COMPLEX_FLOAT) | |
2745 | abort (); | |
2746 | cum->gp_reg_found = 1; | |
147255d8 JW |
2747 | cum->arg_words += ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) |
2748 | / UNITS_PER_WORD); | |
cee98a59 MM |
2749 | break; |
2750 | ||
2751 | case BLKmode: | |
2752 | cum->gp_reg_found = 1; | |
147255d8 JW |
2753 | cum->arg_words += ((int_size_in_bytes (type) + UNITS_PER_WORD - 1) |
2754 | / UNITS_PER_WORD); | |
cee98a59 MM |
2755 | break; |
2756 | ||
2757 | case SFmode: | |
2758 | cum->arg_words++; | |
2759 | break; | |
2760 | ||
2761 | case DFmode: | |
147255d8 | 2762 | cum->arg_words += (TARGET_64BIT ? 1 : 2); |
cee98a59 MM |
2763 | break; |
2764 | ||
2765 | case DImode: | |
2766 | cum->gp_reg_found = 1; | |
147255d8 | 2767 | cum->arg_words += (TARGET_64BIT ? 1 : 2); |
cee98a59 MM |
2768 | break; |
2769 | ||
2770 | case QImode: | |
2771 | case HImode: | |
2772 | case SImode: | |
2773 | cum->gp_reg_found = 1; | |
2774 | cum->arg_words++; | |
2775 | break; | |
2776 | } | |
2777 | } | |
2778 | ||
147255d8 JW |
2779 | /* Return an RTL expression containing the register for the given mode, |
2780 | or 0 if the argument is to be passed on the stack. */ | |
cee98a59 MM |
2781 | |
2782 | struct rtx_def * | |
2783 | function_arg (cum, mode, type, named) | |
2784 | CUMULATIVE_ARGS *cum; /* current arg information */ | |
2785 | enum machine_mode mode; /* current arg mode */ | |
2786 | tree type; /* type of the argument or 0 if lib support */ | |
2787 | int named; /* != 0 for normal args, == 0 for ... args */ | |
2788 | { | |
3f1f8d8c | 2789 | rtx ret; |
cee98a59 MM |
2790 | int regbase = -1; |
2791 | int bias = 0; | |
3f1f8d8c MM |
2792 | int struct_p = ((type != (tree)0) |
2793 | && (TREE_CODE (type) == RECORD_TYPE | |
2794 | || TREE_CODE (type) == UNION_TYPE)); | |
cee98a59 MM |
2795 | |
2796 | if (TARGET_DEBUG_E_MODE) | |
2797 | fprintf (stderr, | |
2798 | "function_arg( {gp reg found = %d, arg # = %2d, words = %2d}, %4s, 0x%.8x, %d ) = ", | |
2799 | cum->gp_reg_found, cum->arg_number, cum->arg_words, GET_MODE_NAME (mode), | |
2800 | type, named); | |
2801 | ||
2802 | switch (mode) | |
2803 | { | |
cee98a59 | 2804 | case SFmode: |
dc55be0e | 2805 | if (cum->gp_reg_found || cum->arg_number >= 2 || TARGET_SOFT_FLOAT) |
cee98a59 | 2806 | regbase = GP_ARG_FIRST; |
dc55be0e JW |
2807 | else |
2808 | { | |
2809 | regbase = FP_ARG_FIRST; | |
2810 | /* If the first arg was a float in a floating point register, | |
2811 | then set bias to align this float arg properly. */ | |
2812 | if (cum->arg_words == 1) | |
2813 | bias = 1; | |
2814 | } | |
cee98a59 MM |
2815 | |
2816 | break; | |
2817 | ||
2818 | case DFmode: | |
147255d8 JW |
2819 | if (! TARGET_64BIT) |
2820 | cum->arg_words += (cum->arg_words & 1); | |
377b7761 JW |
2821 | regbase = (cum->gp_reg_found || TARGET_SOFT_FLOAT || cum->arg_number >= 2 |
2822 | ? GP_ARG_FIRST | |
2823 | : FP_ARG_FIRST); | |
cee98a59 MM |
2824 | break; |
2825 | ||
b4b93495 RS |
2826 | default: |
2827 | if (GET_MODE_CLASS (mode) != MODE_COMPLEX_INT | |
2828 | && GET_MODE_CLASS (mode) != MODE_COMPLEX_FLOAT) | |
2829 | abort (); | |
2830 | ||
2831 | /* Drops through. */ | |
cee98a59 | 2832 | case BLKmode: |
147255d8 JW |
2833 | if (type != (tree)0 && TYPE_ALIGN (type) > BITS_PER_WORD |
2834 | && ! TARGET_64BIT) | |
df7fef57 MM |
2835 | cum->arg_words += (cum->arg_words & 1); |
2836 | ||
2837 | regbase = GP_ARG_FIRST; | |
2838 | break; | |
2839 | ||
2840 | case VOIDmode: | |
cee98a59 MM |
2841 | case QImode: |
2842 | case HImode: | |
2843 | case SImode: | |
2844 | regbase = GP_ARG_FIRST; | |
2845 | break; | |
2846 | ||
2847 | case DImode: | |
147255d8 JW |
2848 | if (! TARGET_64BIT) |
2849 | cum->arg_words += (cum->arg_words & 1); | |
cee98a59 MM |
2850 | regbase = GP_ARG_FIRST; |
2851 | } | |
2852 | ||
2853 | if (cum->arg_words >= MAX_ARGS_IN_REGISTERS) | |
2854 | { | |
2855 | if (TARGET_DEBUG_E_MODE) | |
3f1f8d8c | 2856 | fprintf (stderr, "<stack>%s\n", struct_p ? ", [struct]" : ""); |
cee98a59 | 2857 | |
3f1f8d8c | 2858 | ret = (rtx)0; |
cee98a59 | 2859 | } |
3f1f8d8c MM |
2860 | else |
2861 | { | |
2862 | if (regbase == -1) | |
2863 | abort (); | |
cee98a59 | 2864 | |
3f1f8d8c | 2865 | ret = gen_rtx (REG, mode, regbase + cum->arg_words + bias); |
cee98a59 | 2866 | |
3f1f8d8c MM |
2867 | if (TARGET_DEBUG_E_MODE) |
2868 | fprintf (stderr, "%s%s\n", reg_names[regbase + cum->arg_words + bias], | |
2869 | struct_p ? ", [struct]" : ""); | |
2870 | ||
2871 | /* The following is a hack in order to pass 1 byte structures | |
2872 | the same way that the MIPS compiler does (namely by passing | |
2873 | the structure in the high byte or half word of the register). | |
2874 | This also makes varargs work. If we have such a structure, | |
2875 | we save the adjustment RTL, and the call define expands will | |
2876 | emit them. For the VOIDmode argument (argument after the | |
147255d8 | 2877 | last real argument), pass back a parallel vector holding each |
3f1f8d8c MM |
2878 | of the adjustments. */ |
2879 | ||
894715dd RS |
2880 | /* ??? function_arg can be called more than once for each argument. |
2881 | As a result, we compute more adjustments than we need here. | |
2882 | See the CUMULATIVE_ARGS definition in mips.h. */ | |
2883 | ||
147255d8 JW |
2884 | /* ??? This scheme requires everything smaller than the word size to |
2885 | shifted to the left, but when TARGET_64BIT and ! TARGET_INT64, | |
2886 | that would mean every int needs to be shifted left, which is very | |
2887 | inefficient. Let's not carry this compatibility to the 64 bit | |
2888 | calling convention for now. */ | |
2889 | ||
2890 | if (struct_p && int_size_in_bytes (type) < UNITS_PER_WORD | |
2891 | && ! TARGET_64BIT) | |
3f1f8d8c | 2892 | { |
f4ef129a JW |
2893 | rtx amount = GEN_INT (BITS_PER_WORD |
2894 | - int_size_in_bytes (type) * BITS_PER_UNIT); | |
147255d8 JW |
2895 | rtx reg = gen_rtx (REG, word_mode, regbase + cum->arg_words + bias); |
2896 | if (TARGET_64BIT) | |
2897 | cum->adjust[ cum->num_adjusts++ ] = gen_ashldi3 (reg, reg, amount); | |
2898 | else | |
2899 | cum->adjust[ cum->num_adjusts++ ] = gen_ashlsi3 (reg, reg, amount); | |
3f1f8d8c MM |
2900 | } |
2901 | } | |
2902 | ||
2903 | if (mode == VOIDmode && cum->num_adjusts > 0) | |
2904 | ret = gen_rtx (PARALLEL, VOIDmode, gen_rtvec_v (cum->num_adjusts, cum->adjust)); | |
cee98a59 | 2905 | |
3f1f8d8c | 2906 | return ret; |
cee98a59 MM |
2907 | } |
2908 | ||
2909 | ||
2910 | int | |
2911 | function_arg_partial_nregs (cum, mode, type, named) | |
2912 | CUMULATIVE_ARGS *cum; /* current arg information */ | |
2913 | enum machine_mode mode; /* current arg mode */ | |
2914 | tree type; /* type of the argument or 0 if lib support */ | |
2915 | int named; /* != 0 for normal args, == 0 for ... args */ | |
2916 | { | |
b4b93495 RS |
2917 | if ((mode == BLKmode |
2918 | || GET_MODE_CLASS (mode) != MODE_COMPLEX_INT | |
2919 | || GET_MODE_CLASS (mode) != MODE_COMPLEX_FLOAT) | |
2920 | && cum->arg_words < MAX_ARGS_IN_REGISTERS) | |
cee98a59 | 2921 | { |
b4b93495 RS |
2922 | int words; |
2923 | if (mode == BLKmode) | |
147255d8 JW |
2924 | words = ((int_size_in_bytes (type) + UNITS_PER_WORD - 1) |
2925 | / UNITS_PER_WORD); | |
b4b93495 | 2926 | else |
147255d8 | 2927 | words = (GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD; |
cee98a59 | 2928 | |
47f113fe | 2929 | if (words + cum->arg_words <= MAX_ARGS_IN_REGISTERS) |
cee98a59 MM |
2930 | return 0; /* structure fits in registers */ |
2931 | ||
2932 | if (TARGET_DEBUG_E_MODE) | |
2933 | fprintf (stderr, "function_arg_partial_nregs = %d\n", | |
2934 | MAX_ARGS_IN_REGISTERS - cum->arg_words); | |
2935 | ||
2936 | return MAX_ARGS_IN_REGISTERS - cum->arg_words; | |
2937 | } | |
2938 | ||
147255d8 JW |
2939 | else if (mode == DImode && cum->arg_words == MAX_ARGS_IN_REGISTERS-1 |
2940 | && ! TARGET_64BIT) | |
cee98a59 MM |
2941 | { |
2942 | if (TARGET_DEBUG_E_MODE) | |
2943 | fprintf (stderr, "function_arg_partial_nregs = 1\n"); | |
2944 | ||
2945 | return 1; | |
2946 | } | |
2947 | ||
2948 | return 0; | |
2949 | } | |
2950 | ||
2951 | \f | |
2952 | /* Print the options used in the assembly file. */ | |
2953 | ||
2954 | static struct {char *name; int value;} target_switches [] | |
2955 | = TARGET_SWITCHES; | |
2956 | ||
2957 | void | |
2958 | print_options (out) | |
2959 | FILE *out; | |
2960 | { | |
2961 | int line_len; | |
2962 | int len; | |
2963 | int j; | |
2964 | char **p; | |
2965 | int mask = TARGET_DEFAULT; | |
2966 | ||
2967 | /* Allow assembly language comparisons with -mdebug eliminating the | |
2968 | compiler version number and switch lists. */ | |
2969 | ||
2970 | if (TARGET_DEBUG_MODE) | |
2971 | return; | |
2972 | ||
2973 | fprintf (out, "\n # %s %s", language_string, version_string); | |
2974 | #ifdef TARGET_VERSION_INTERNAL | |
2975 | TARGET_VERSION_INTERNAL (out); | |
2976 | #endif | |
2977 | #ifdef __GNUC__ | |
2978 | fprintf (out, " compiled by GNU C\n\n"); | |
2979 | #else | |
2980 | fprintf (out, " compiled by CC\n\n"); | |
2981 | #endif | |
2982 | ||
2983 | fprintf (out, " # Cc1 defaults:"); | |
2984 | line_len = 32767; | |
2985 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
2986 | { | |
2987 | if (target_switches[j].name[0] != '\0' | |
2988 | && target_switches[j].value > 0 | |
2989 | && (target_switches[j].value & mask) == target_switches[j].value) | |
2990 | { | |
2991 | mask &= ~ target_switches[j].value; | |
2992 | len = strlen (target_switches[j].name) + 1; | |
2993 | if (len + line_len > 79) | |
2994 | { | |
2995 | line_len = 2; | |
2996 | fputs ("\n #", out); | |
2997 | } | |
2998 | fprintf (out, " -m%s", target_switches[j].name); | |
2999 | line_len += len; | |
3000 | } | |
3001 | } | |
3002 | ||
3003 | fprintf (out, "\n\n # Cc1 arguments (-G value = %d, Cpu = %s, ISA = %d):", | |
3004 | mips_section_threshold, mips_cpu_string, mips_isa); | |
3005 | ||
3006 | line_len = 32767; | |
3007 | for (p = &save_argv[1]; *p != (char *)0; p++) | |
3008 | { | |
3009 | char *arg = *p; | |
3010 | if (*arg == '-') | |
3011 | { | |
3012 | len = strlen (arg) + 1; | |
3013 | if (len + line_len > 79) | |
3014 | { | |
3015 | line_len = 2; | |
3016 | fputs ("\n #", out); | |
3017 | } | |
3018 | fprintf (out, " %s", *p); | |
3019 | line_len += len; | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | fputs ("\n\n", out); | |
3024 | } | |
3025 | ||
3026 | \f | |
3027 | /* Abort after printing out a specific insn. */ | |
3028 | ||
3029 | void | |
3030 | abort_with_insn (insn, reason) | |
3031 | rtx insn; | |
3032 | char *reason; | |
3033 | { | |
3034 | error (reason); | |
3035 | debug_rtx (insn); | |
3036 | abort (); | |
3037 | } | |
3038 | ||
3039 | /* Write a message to stderr (for use in macros expanded in files that do not | |
3040 | include stdio.h). */ | |
3041 | ||
3042 | void | |
3043 | trace (s, s1, s2) | |
3044 | char *s, *s1, *s2; | |
3045 | { | |
3046 | fprintf (stderr, s, s1, s2); | |
3047 | } | |
3048 | ||
3049 | \f | |
3050 | #ifdef SIGINFO | |
3051 | ||
cee98a59 MM |
3052 | static void |
3053 | siginfo (signo) | |
3054 | int signo; | |
3055 | { | |
cee98a59 MM |
3056 | fprintf (stderr, "compiling '%s' in '%s'\n", |
3057 | (current_function_name != (char *)0) ? current_function_name : "<toplevel>", | |
3058 | (current_function_file != (char *)0) ? current_function_file : "<no file>"); | |
a6b65dff | 3059 | fflush (stderr); |
cee98a59 | 3060 | } |
cee98a59 MM |
3061 | #endif /* SIGINFO */ |
3062 | ||
3063 | \f | |
3064 | /* Set up the threshold for data to go into the small data area, instead | |
3065 | of the normal data area, and detect any conflicts in the switches. */ | |
3066 | ||
3067 | void | |
3068 | override_options () | |
3069 | { | |
3070 | register int i, start; | |
3071 | register int regno; | |
3072 | register enum machine_mode mode; | |
3073 | ||
b82b0773 | 3074 | mips_section_threshold = (g_switch_set) ? g_switch_value : MIPS_DEFAULT_GVALUE; |
cee98a59 | 3075 | |
147255d8 JW |
3076 | if (mips_section_threshold <= 0) |
3077 | target_flags &= ~MASK_GPOPT; | |
3078 | else if (optimize) | |
3079 | target_flags |= MASK_GPOPT; | |
3080 | ||
3081 | /* Get the architectural level. */ | |
3082 | if (mips_isa_string == (char *)0) | |
3083 | { | |
3084 | #ifdef MIPS_ISA_DEFAULT | |
3085 | mips_isa = MIPS_ISA_DEFAULT; | |
3086 | #else | |
3087 | mips_isa = 1; | |
3088 | #endif | |
3089 | } | |
3090 | ||
3091 | else if (isdigit (*mips_isa_string)) | |
3092 | { | |
3093 | mips_isa = atoi (mips_isa_string); | |
3094 | if (mips_isa < 1 || mips_isa > 3) | |
3095 | { | |
3096 | error ("-mips%d not supported", mips_isa); | |
3097 | mips_isa = 1; | |
3098 | } | |
3099 | } | |
3100 | ||
3101 | else | |
3102 | { | |
3103 | error ("bad value (%s) for -mips switch", mips_isa_string); | |
3104 | mips_isa = 1; | |
3105 | } | |
3106 | ||
cee98a59 MM |
3107 | /* Identify the processor type */ |
3108 | if (mips_cpu_string == (char *)0 | |
3109 | || !strcmp (mips_cpu_string, "default") | |
3110 | || !strcmp (mips_cpu_string, "DEFAULT")) | |
3111 | { | |
147255d8 JW |
3112 | switch (mips_isa) |
3113 | { | |
3114 | default: | |
3115 | mips_cpu_string = "3000"; | |
3116 | mips_cpu = PROCESSOR_R3000; | |
3117 | break; | |
3118 | case 2: | |
3119 | mips_cpu_string = "6000"; | |
3120 | mips_cpu = PROCESSOR_R6000; | |
3121 | break; | |
3122 | case 3: | |
3123 | mips_cpu_string = "4000"; | |
3124 | mips_cpu = PROCESSOR_R4000; | |
3125 | break; | |
3126 | } | |
a349007c ILT |
3127 | |
3128 | #ifdef MIPS_CPU_DEFAULT | |
3129 | if (mips_isa_string == (char *)0) | |
3130 | { | |
3131 | mips_cpu_string = MIPS_CPU_STRING_DEFAULT; | |
3132 | mips_cpu = MIPS_CPU_DEFAULT; | |
3133 | } | |
3134 | #endif | |
cee98a59 MM |
3135 | } |
3136 | ||
3137 | else | |
3138 | { | |
3139 | char *p = mips_cpu_string; | |
3140 | ||
3141 | if (*p == 'r' || *p == 'R') | |
3142 | p++; | |
3143 | ||
3144 | /* Since there is no difference between a R2000 and R3000 in | |
3145 | terms of the scheduler, we collapse them into just an R3000. */ | |
3146 | ||
3147 | mips_cpu = PROCESSOR_DEFAULT; | |
3148 | switch (*p) | |
3149 | { | |
3150 | case '2': | |
3151 | if (!strcmp (p, "2000") || !strcmp (p, "2k") || !strcmp (p, "2K")) | |
3152 | mips_cpu = PROCESSOR_R3000; | |
3153 | break; | |
3154 | ||
3155 | case '3': | |
3156 | if (!strcmp (p, "3000") || !strcmp (p, "3k") || !strcmp (p, "3K")) | |
3157 | mips_cpu = PROCESSOR_R3000; | |
3158 | break; | |
3159 | ||
3160 | case '4': | |
3161 | if (!strcmp (p, "4000") || !strcmp (p, "4k") || !strcmp (p, "4K")) | |
3162 | mips_cpu = PROCESSOR_R4000; | |
147255d8 JW |
3163 | /* The r4400 is exactly the same as the r4000 from the compiler's |
3164 | viewpoint. */ | |
3165 | else if (!strcmp (p, "4400")) | |
3166 | mips_cpu = PROCESSOR_R4000; | |
3167 | else if (!strcmp (p, "4600")) | |
3168 | mips_cpu = PROCESSOR_R4600; | |
cee98a59 MM |
3169 | break; |
3170 | ||
3171 | case '6': | |
3172 | if (!strcmp (p, "6000") || !strcmp (p, "6k") || !strcmp (p, "6K")) | |
3173 | mips_cpu = PROCESSOR_R6000; | |
3174 | break; | |
147255d8 JW |
3175 | |
3176 | case 'o': | |
3177 | if (!strcmp (p, "orion")) | |
3178 | mips_cpu = PROCESSOR_R4600; | |
3179 | break; | |
cee98a59 MM |
3180 | } |
3181 | ||
3182 | if (mips_cpu == PROCESSOR_DEFAULT) | |
3183 | { | |
3184 | error ("bad value (%s) for -mcpu= switch", mips_cpu_string); | |
3185 | mips_cpu_string = "default"; | |
3186 | } | |
3187 | } | |
3188 | ||
147255d8 JW |
3189 | if ((mips_cpu == PROCESSOR_R3000 && mips_isa > 1) |
3190 | || (mips_cpu == PROCESSOR_R6000 && mips_isa > 2)) | |
cee98a59 MM |
3191 | error ("-mcpu=%s does not support -mips%d", mips_cpu_string, mips_isa); |
3192 | ||
3193 | /* make sure sizes of ints/longs/etc. are ok */ | |
3194 | if (mips_isa < 3) | |
3195 | { | |
3196 | if (TARGET_INT64) | |
147255d8 | 3197 | fatal ("Only MIPS-III CPUs can support 64 bit ints"); |
cee98a59 MM |
3198 | |
3199 | else if (TARGET_LONG64) | |
147255d8 | 3200 | fatal ("Only MIPS-III CPUs can support 64 bit longs"); |
cee98a59 | 3201 | |
cee98a59 | 3202 | else if (TARGET_FLOAT64) |
147255d8 | 3203 | fatal ("Only MIPS-III CPUs can support 64 bit fp registers"); |
f8151871 JW |
3204 | |
3205 | else if (TARGET_64BIT) | |
3206 | fatal ("Only MIPS-III CPUs can support 64 bit gp registers"); | |
147255d8 | 3207 | } |
cee98a59 MM |
3208 | |
3209 | /* Tell halfpic.c that we have half-pic code if we do. */ | |
3210 | if (TARGET_HALF_PIC) | |
c831afd5 | 3211 | HALF_PIC_INIT (); |
cee98a59 | 3212 | |
508a48d1 JW |
3213 | /* -fpic (-KPIC) is the default when TARGET_ABICALLS is defined. We need |
3214 | to set flag_pic so that the LEGITIMATE_PIC_OPERAND_P macro will work. */ | |
3215 | /* ??? -non_shared turns off pic code generation, but this is not | |
3216 | implemented. */ | |
ffa9d0b1 | 3217 | if (TARGET_ABICALLS) |
508a48d1 JW |
3218 | { |
3219 | mips_abicalls = MIPS_ABICALLS_YES; | |
3220 | flag_pic = 1; | |
508a48d1 JW |
3221 | if (mips_section_threshold > 0) |
3222 | warning ("-G is incompatible with PIC code which is the default"); | |
3223 | } | |
ffa9d0b1 | 3224 | else |
1d6ce736 | 3225 | mips_abicalls = MIPS_ABICALLS_NO; |
ffa9d0b1 | 3226 | |
e0bfcea5 ILT |
3227 | /* -membedded-pic is a form of PIC code suitable for embedded |
3228 | systems. All calls are made using PC relative addressing, and | |
3229 | all data is addressed using the $gp register. This requires gas, | |
3230 | which does most of the work, and GNU ld, which automatically | |
3231 | expands PC relative calls which are out of range into a longer | |
3232 | instruction sequence. All gcc really does differently is | |
3233 | generate a different sequence for a switch. */ | |
3234 | if (TARGET_EMBEDDED_PIC) | |
3235 | { | |
3236 | flag_pic = 1; | |
3237 | if (TARGET_ABICALLS) | |
3238 | warning ("-membedded-pic and -mabicalls are incompatible"); | |
3239 | if (g_switch_set) | |
3240 | warning ("-G and -membedded-pic are incompatible"); | |
3241 | /* Setting mips_section_threshold is not required, because gas | |
3242 | will force everything to be GP addressable anyhow, but | |
3243 | setting it will cause gcc to make better estimates of the | |
3244 | number of instructions required to access a particular data | |
3245 | item. */ | |
3246 | mips_section_threshold = 0x7fffffff; | |
3247 | } | |
3248 | ||
cee98a59 | 3249 | /* -mrnames says to use the MIPS software convention for register |
147255d8 | 3250 | names instead of the hardware names (ie, $a0 instead of $4). |
cee98a59 MM |
3251 | We do this by switching the names in mips_reg_names, which the |
3252 | reg_names points into via the REGISTER_NAMES macro. */ | |
3253 | ||
3254 | if (TARGET_NAME_REGS) | |
147255d8 | 3255 | bcopy ((char *) mips_sw_reg_names, (char *) mips_reg_names, sizeof (mips_reg_names)); |
cee98a59 MM |
3256 | |
3257 | /* If this is OSF/1, set up a SIGINFO handler so we can see what function | |
3258 | is currently being compiled. */ | |
3259 | #ifdef SIGINFO | |
3260 | if (getenv ("GCC_SIGINFO") != (char *)0) | |
3261 | { | |
3262 | struct sigaction action; | |
3263 | action.sa_handler = siginfo; | |
3264 | action.sa_mask = 0; | |
3265 | action.sa_flags = SA_RESTART; | |
3266 | sigaction (SIGINFO, &action, (struct sigaction *)0); | |
3267 | } | |
3268 | #endif | |
3269 | ||
d4099651 MM |
3270 | #if defined(_IOLBF) |
3271 | #if defined(ultrix) || defined(__ultrix) || defined(__OSF1__) || defined(__osf__) || defined(osf) | |
842eb20e MM |
3272 | /* If -mstats and -quiet, make stderr line buffered. */ |
3273 | if (quiet_flag && TARGET_STATS) | |
d4099651 | 3274 | setvbuf (stderr, (char *)0, _IOLBF, BUFSIZ); |
842eb20e | 3275 | #endif |
4dee632b | 3276 | #endif |
842eb20e | 3277 | |
147255d8 JW |
3278 | /* Initialize the high and low values for legitimate floating point |
3279 | constants. Rather than trying to get the accuracy down to the | |
3280 | last bit, just use approximate ranges. */ | |
3281 | dfhigh = REAL_VALUE_ATOF ("1.0e300", DFmode); | |
3282 | dflow = REAL_VALUE_ATOF ("1.0e-300", DFmode); | |
3283 | sfhigh = REAL_VALUE_ATOF ("1.0e38", SFmode); | |
3284 | sflow = REAL_VALUE_ATOF ("1.0e-38", SFmode); | |
3285 | ||
cee98a59 MM |
3286 | mips_print_operand_punct['?'] = TRUE; |
3287 | mips_print_operand_punct['#'] = TRUE; | |
3288 | mips_print_operand_punct['&'] = TRUE; | |
3289 | mips_print_operand_punct['!'] = TRUE; | |
3290 | mips_print_operand_punct['*'] = TRUE; | |
3291 | mips_print_operand_punct['@'] = TRUE; | |
3292 | mips_print_operand_punct['.'] = TRUE; | |
3293 | mips_print_operand_punct['('] = TRUE; | |
3294 | mips_print_operand_punct[')'] = TRUE; | |
3295 | mips_print_operand_punct['['] = TRUE; | |
3296 | mips_print_operand_punct[']'] = TRUE; | |
3297 | mips_print_operand_punct['<'] = TRUE; | |
3298 | mips_print_operand_punct['>'] = TRUE; | |
3299 | mips_print_operand_punct['{'] = TRUE; | |
3300 | mips_print_operand_punct['}'] = TRUE; | |
ffa9d0b1 | 3301 | mips_print_operand_punct['^'] = TRUE; |
cee98a59 MM |
3302 | |
3303 | mips_char_to_class['d'] = GR_REGS; | |
3304 | mips_char_to_class['f'] = ((TARGET_HARD_FLOAT) ? FP_REGS : NO_REGS); | |
3305 | mips_char_to_class['h'] = HI_REG; | |
3306 | mips_char_to_class['l'] = LO_REG; | |
cee98a59 MM |
3307 | mips_char_to_class['x'] = MD_REGS; |
3308 | mips_char_to_class['y'] = GR_REGS; | |
34b650b3 | 3309 | mips_char_to_class['z'] = ST_REGS; |
cee98a59 MM |
3310 | |
3311 | /* Set up array to map GCC register number to debug register number. | |
3312 | Ignore the special purpose register numbers. */ | |
3313 | ||
3314 | for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) | |
3315 | mips_dbx_regno[i] = -1; | |
3316 | ||
3317 | start = GP_DBX_FIRST - GP_REG_FIRST; | |
3318 | for (i = GP_REG_FIRST; i <= GP_REG_LAST; i++) | |
3319 | mips_dbx_regno[i] = i + start; | |
3320 | ||
3321 | start = FP_DBX_FIRST - FP_REG_FIRST; | |
3322 | for (i = FP_REG_FIRST; i <= FP_REG_LAST; i++) | |
3323 | mips_dbx_regno[i] = i + start; | |
3324 | ||
3325 | /* Set up array giving whether a given register can hold a given mode. | |
3326 | At present, restrict ints from being in FP registers, because reload | |
3327 | is a little enthusiastic about storing extra values in FP registers, | |
3328 | and this is not good for things like OS kernels. Also, due to the | |
c831afd5 | 3329 | mandatory delay, it is as fast to load from cached memory as to move |
cee98a59 MM |
3330 | from the FP register. */ |
3331 | ||
3332 | for (mode = VOIDmode; | |
3333 | mode != MAX_MACHINE_MODE; | |
3334 | mode = (enum machine_mode)((int)mode + 1)) | |
3335 | { | |
3336 | register int size = GET_MODE_SIZE (mode); | |
3337 | register enum mode_class class = GET_MODE_CLASS (mode); | |
3338 | ||
3339 | for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) | |
3340 | { | |
34b650b3 MM |
3341 | register int temp; |
3342 | ||
3343 | if (mode == CC_FPmode || mode == CC_REV_FPmode) | |
3344 | temp = (regno == FPSW_REGNUM); | |
cee98a59 | 3345 | |
34b650b3 | 3346 | else if (GP_REG_P (regno)) |
cee98a59 MM |
3347 | temp = ((regno & 1) == 0 || (size <= UNITS_PER_WORD)); |
3348 | ||
3349 | else if (FP_REG_P (regno)) | |
3350 | temp = ((TARGET_FLOAT64 || ((regno & 1) == 0)) | |
34b650b3 MM |
3351 | && (class == MODE_FLOAT |
3352 | || class == MODE_COMPLEX_FLOAT | |
3353 | || (TARGET_DEBUG_H_MODE && class == MODE_INT))); | |
cee98a59 MM |
3354 | |
3355 | else if (MD_REG_P (regno)) | |
147255d8 JW |
3356 | { |
3357 | if (TARGET_64BIT) | |
3358 | temp = (mode == DImode | |
3359 | || (regno == MD_REG_FIRST && mode == TImode)); | |
3360 | else | |
3361 | temp = (mode == SImode | |
3362 | || (regno == MD_REG_FIRST && mode == DImode)); | |
3363 | } | |
cee98a59 | 3364 | |
34b650b3 MM |
3365 | else |
3366 | temp = FALSE; | |
cee98a59 MM |
3367 | |
3368 | mips_hard_regno_mode_ok[(int)mode][regno] = temp; | |
3369 | } | |
3370 | } | |
3371 | } | |
3372 | ||
3373 | \f | |
3374 | /* | |
ab78d4a8 MM |
3375 | * The MIPS debug format wants all automatic variables and arguments |
3376 | * to be in terms of the virtual frame pointer (stack pointer before | |
3377 | * any adjustment in the function), while the MIPS 3.0 linker wants | |
3378 | * the frame pointer to be the stack pointer after the initial | |
3379 | * adjustment. So, we do the adjustment here. The arg pointer (which | |
3380 | * is eliminated) points to the virtual frame pointer, while the frame | |
3381 | * pointer (which may be eliminated) points to the stack pointer after | |
3382 | * the initial adjustments. | |
cee98a59 MM |
3383 | */ |
3384 | ||
3385 | int | |
3386 | mips_debugger_offset (addr, offset) | |
3387 | rtx addr; | |
3388 | int offset; | |
3389 | { | |
c831afd5 | 3390 | rtx offset2 = const0_rtx; |
cee98a59 MM |
3391 | rtx reg = eliminate_constant_term (addr, &offset2); |
3392 | ||
3393 | if (!offset) | |
c831afd5 | 3394 | offset = INTVAL (offset2); |
cee98a59 | 3395 | |
ab78d4a8 | 3396 | if (reg == stack_pointer_rtx || reg == frame_pointer_rtx) |
c831afd5 MM |
3397 | { |
3398 | int frame_size = (!current_frame_info.initialized) | |
3399 | ? compute_frame_size (get_frame_size ()) | |
3400 | : current_frame_info.total_size; | |
3401 | ||
3402 | offset = offset - frame_size; | |
3403 | } | |
acc15f57 RS |
3404 | /* sdbout_parms does not want this to crash for unrecognized cases. */ |
3405 | #if 0 | |
ab78d4a8 MM |
3406 | else if (reg != arg_pointer_rtx) |
3407 | abort_with_insn (addr, "mips_debugger_offset called with non stack/frame/arg pointer."); | |
acc15f57 | 3408 | #endif |
cee98a59 MM |
3409 | |
3410 | return offset; | |
3411 | } | |
dbe9742d | 3412 | |
cee98a59 MM |
3413 | \f |
3414 | /* A C compound statement to output to stdio stream STREAM the | |
3415 | assembler syntax for an instruction operand X. X is an RTL | |
3416 | expression. | |
3417 | ||
3418 | CODE is a value that can be used to specify one of several ways | |
3419 | of printing the operand. It is used when identical operands | |
3420 | must be printed differently depending on the context. CODE | |
3421 | comes from the `%' specification that was used to request | |
3422 | printing of the operand. If the specification was just `%DIGIT' | |
3423 | then CODE is 0; if the specification was `%LTR DIGIT' then CODE | |
3424 | is the ASCII code for LTR. | |
3425 | ||
3426 | If X is a register, this macro should print the register's name. | |
3427 | The names can be found in an array `reg_names' whose type is | |
3428 | `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'. | |
3429 | ||
3430 | When the machine description has a specification `%PUNCT' (a `%' | |
3431 | followed by a punctuation character), this macro is called with | |
3432 | a null pointer for X and the punctuation character for CODE. | |
3433 | ||
3434 | The MIPS specific codes are: | |
3435 | ||
3436 | 'X' X is CONST_INT, prints 32 bits in hexadecimal format = "0x%08x", | |
3437 | 'x' X is CONST_INT, prints 16 bits in hexadecimal format = "0x%04x", | |
3438 | 'd' output integer constant in decimal, | |
3439 | 'z' if the operand is 0, use $0 instead of normal operand. | |
3440 | 'D' print second register of double-word register operand. | |
3441 | 'L' print low-order register of double-word register operand. | |
3442 | 'M' print high-order register of double-word register operand. | |
3443 | 'C' print part of opcode for a branch condition. | |
3444 | 'N' print part of opcode for a branch condition, inverted. | |
e0bfcea5 | 3445 | 'S' X is CODE_LABEL, print with prefix of "LS" (for embedded switch). |
cee98a59 MM |
3446 | '(' Turn on .set noreorder |
3447 | ')' Turn on .set reorder | |
3448 | '[' Turn on .set noat | |
3449 | ']' Turn on .set at | |
3450 | '<' Turn on .set nomacro | |
3451 | '>' Turn on .set macro | |
3452 | '{' Turn on .set volatile (not GAS) | |
3453 | '}' Turn on .set novolatile (not GAS) | |
3454 | '&' Turn on .set noreorder if filling delay slots | |
3455 | '*' Turn on both .set noreorder and .set nomacro if filling delay slots | |
3456 | '!' Turn on .set nomacro if filling delay slots | |
3457 | '#' Print nop if in a .set noreorder section. | |
3458 | '?' Print 'l' if we are to use a branch likely instead of normal branch. | |
3459 | '@' Print the name of the assembler temporary register (at or $1). | |
ffa9d0b1 JW |
3460 | '.' Print the name of the register with a hard-wired zero (zero or $0). |
3461 | '^' Print the name of the pic call-through register (t9 or $25). */ | |
cee98a59 MM |
3462 | |
3463 | void | |
3464 | print_operand (file, op, letter) | |
3465 | FILE *file; /* file to write to */ | |
3466 | rtx op; /* operand to print */ | |
3467 | int letter; /* %<letter> or 0 */ | |
3468 | { | |
3469 | register enum rtx_code code; | |
3470 | ||
3471 | if (PRINT_OPERAND_PUNCT_VALID_P (letter)) | |
3472 | { | |
3473 | switch (letter) | |
3474 | { | |
3475 | default: | |
3476 | error ("PRINT_OPERAND: Unknown punctuation '%c'", letter); | |
3477 | break; | |
3478 | ||
3479 | case '?': | |
3480 | if (mips_branch_likely) | |
3481 | putc ('l', file); | |
3482 | break; | |
3483 | ||
3484 | case '@': | |
3485 | fputs (reg_names [GP_REG_FIRST + 1], file); | |
3486 | break; | |
3487 | ||
ffa9d0b1 JW |
3488 | case '^': |
3489 | fputs (reg_names [PIC_FUNCTION_ADDR_REGNUM], file); | |
3490 | break; | |
3491 | ||
cee98a59 MM |
3492 | case '.': |
3493 | fputs (reg_names [GP_REG_FIRST + 0], file); | |
3494 | break; | |
3495 | ||
3496 | case '&': | |
3497 | if (final_sequence != 0 && set_noreorder++ == 0) | |
3498 | fputs (".set\tnoreorder\n\t", file); | |
3499 | break; | |
3500 | ||
3501 | case '*': | |
3502 | if (final_sequence != 0) | |
3503 | { | |
3504 | if (set_noreorder++ == 0) | |
3505 | fputs (".set\tnoreorder\n\t", file); | |
3506 | ||
3507 | if (set_nomacro++ == 0) | |
3508 | fputs (".set\tnomacro\n\t", file); | |
3509 | } | |
3510 | break; | |
3511 | ||
3512 | case '!': | |
3513 | if (final_sequence != 0 && set_nomacro++ == 0) | |
3514 | fputs ("\n\t.set\tnomacro", file); | |
3515 | break; | |
3516 | ||
3517 | case '#': | |
3518 | if (set_noreorder != 0) | |
3519 | fputs ("\n\tnop", file); | |
3520 | ||
85098019 | 3521 | else if (TARGET_STATS) |
cee98a59 MM |
3522 | fputs ("\n\t#nop", file); |
3523 | ||
3524 | break; | |
3525 | ||
3526 | case '(': | |
3527 | if (set_noreorder++ == 0) | |
3528 | fputs (".set\tnoreorder\n\t", file); | |
3529 | break; | |
3530 | ||
3531 | case ')': | |
3532 | if (set_noreorder == 0) | |
3533 | error ("internal error: %%) found without a %%( in assembler pattern"); | |
3534 | ||
3535 | else if (--set_noreorder == 0) | |
3536 | fputs ("\n\t.set\treorder", file); | |
3537 | ||
3538 | break; | |
3539 | ||
3540 | case '[': | |
3541 | if (set_noat++ == 0) | |
3542 | fputs (".set\tnoat\n\t", file); | |
3543 | break; | |
3544 | ||
3545 | case ']': | |
3546 | if (set_noat == 0) | |
3547 | error ("internal error: %%] found without a %%[ in assembler pattern"); | |
3548 | ||
3549 | else if (--set_noat == 0) | |
3550 | fputs ("\n\t.set\tat", file); | |
3551 | ||
3552 | break; | |
3553 | ||
3554 | case '<': | |
3555 | if (set_nomacro++ == 0) | |
3556 | fputs (".set\tnomacro\n\t", file); | |
3557 | break; | |
3558 | ||
3559 | case '>': | |
3560 | if (set_nomacro == 0) | |
3561 | error ("internal error: %%> found without a %%< in assembler pattern"); | |
3562 | ||
3563 | else if (--set_nomacro == 0) | |
3564 | fputs ("\n\t.set\tmacro", file); | |
3565 | ||
3566 | break; | |
3567 | ||
3568 | case '{': | |
3569 | if (set_volatile++ == 0) | |
3570 | fprintf (file, "%s.set\tvolatile\n\t", (TARGET_MIPS_AS) ? "" : "#"); | |
3571 | break; | |
3572 | ||
3573 | case '}': | |
3574 | if (set_volatile == 0) | |
3575 | error ("internal error: %%} found without a %%{ in assembler pattern"); | |
3576 | ||
3577 | else if (--set_volatile == 0) | |
3578 | fprintf (file, "\n\t%s.set\tnovolatile", (TARGET_MIPS_AS) ? "" : "#"); | |
3579 | ||
3580 | break; | |
3581 | } | |
3582 | return; | |
3583 | } | |
3584 | ||
3585 | if (! op) | |
3586 | { | |
3587 | error ("PRINT_OPERAND null pointer"); | |
3588 | return; | |
3589 | } | |
3590 | ||
3591 | code = GET_CODE (op); | |
3592 | if (letter == 'C') | |
3593 | switch (code) | |
3594 | { | |
3595 | case EQ: fputs ("eq", file); break; | |
3596 | case NE: fputs ("ne", file); break; | |
3597 | case GT: fputs ("gt", file); break; | |
3598 | case GE: fputs ("ge", file); break; | |
3599 | case LT: fputs ("lt", file); break; | |
3600 | case LE: fputs ("le", file); break; | |
3601 | case GTU: fputs ("gtu", file); break; | |
3602 | case GEU: fputs ("geu", file); break; | |
3603 | case LTU: fputs ("ltu", file); break; | |
3604 | case LEU: fputs ("leu", file); break; | |
3605 | ||
3606 | default: | |
3607 | abort_with_insn (op, "PRINT_OPERAND, illegal insn for %%C"); | |
3608 | } | |
3609 | ||
3610 | else if (letter == 'N') | |
3611 | switch (code) | |
3612 | { | |
3613 | case EQ: fputs ("ne", file); break; | |
3614 | case NE: fputs ("eq", file); break; | |
3615 | case GT: fputs ("le", file); break; | |
3616 | case GE: fputs ("lt", file); break; | |
3617 | case LT: fputs ("ge", file); break; | |
3618 | case LE: fputs ("gt", file); break; | |
3619 | case GTU: fputs ("leu", file); break; | |
3620 | case GEU: fputs ("ltu", file); break; | |
3621 | case LTU: fputs ("geu", file); break; | |
3622 | case LEU: fputs ("gtu", file); break; | |
3623 | ||
3624 | default: | |
3625 | abort_with_insn (op, "PRINT_OPERAND, illegal insn for %%N"); | |
3626 | } | |
3627 | ||
e0bfcea5 ILT |
3628 | else if (letter == 'S') |
3629 | { | |
3630 | char buffer[100]; | |
3631 | ||
3632 | ASM_GENERATE_INTERNAL_LABEL (buffer, "LS", CODE_LABEL_NUMBER (op)); | |
3633 | assemble_name (file, buffer); | |
3634 | } | |
3635 | ||
cee98a59 MM |
3636 | else if (code == REG) |
3637 | { | |
3638 | register int regnum = REGNO (op); | |
3639 | ||
96abdcb1 ILT |
3640 | if ((letter == 'M' && ! WORDS_BIG_ENDIAN) |
3641 | || (letter == 'L' && WORDS_BIG_ENDIAN) | |
3642 | || letter == 'D') | |
cee98a59 MM |
3643 | regnum++; |
3644 | ||
3645 | fprintf (file, "%s", reg_names[regnum]); | |
3646 | } | |
3647 | ||
3648 | else if (code == MEM) | |
3649 | output_address (XEXP (op, 0)); | |
3650 | ||
3651 | else if (code == CONST_DOUBLE) | |
3652 | { | |
147255d8 JW |
3653 | REAL_VALUE_TYPE d; |
3654 | char s[30]; | |
3655 | ||
3656 | REAL_VALUE_FROM_CONST_DOUBLE (d, op); | |
3657 | REAL_VALUE_TO_DECIMAL (d, "%.20e", s); | |
3658 | fprintf (file, s); | |
cee98a59 MM |
3659 | } |
3660 | ||
3661 | else if ((letter == 'x') && (GET_CODE(op) == CONST_INT)) | |
3662 | fprintf (file, "0x%04x", 0xffff & (INTVAL(op))); | |
3663 | ||
3664 | else if ((letter == 'X') && (GET_CODE(op) == CONST_INT)) | |
3665 | fprintf (file, "0x%08x", INTVAL(op)); | |
3666 | ||
3667 | else if ((letter == 'd') && (GET_CODE(op) == CONST_INT)) | |
3668 | fprintf (file, "%d", (INTVAL(op))); | |
3669 | ||
3670 | else if (letter == 'z' | |
3671 | && (GET_CODE (op) == CONST_INT) | |
3672 | && INTVAL (op) == 0) | |
3673 | fputs (reg_names[GP_REG_FIRST], file); | |
3674 | ||
3675 | else if (letter == 'd' || letter == 'x' || letter == 'X') | |
3676 | fatal ("PRINT_OPERAND: letter %c was found & insn was not CONST_INT", letter); | |
3677 | ||
3678 | else | |
3679 | output_addr_const (file, op); | |
3680 | } | |
3681 | ||
3682 | \f | |
3683 | /* A C compound statement to output to stdio stream STREAM the | |
3684 | assembler syntax for an instruction operand that is a memory | |
3685 | reference whose address is ADDR. ADDR is an RTL expression. | |
3686 | ||
3687 | On some machines, the syntax for a symbolic address depends on | |
3688 | the section that the address refers to. On these machines, | |
3689 | define the macro `ENCODE_SECTION_INFO' to store the information | |
3690 | into the `symbol_ref', and then check for it here. */ | |
3691 | ||
3692 | void | |
3693 | print_operand_address (file, addr) | |
3694 | FILE *file; | |
3695 | rtx addr; | |
3696 | { | |
3697 | if (!addr) | |
3698 | error ("PRINT_OPERAND_ADDRESS, null pointer"); | |
3699 | ||
3700 | else | |
3701 | switch (GET_CODE (addr)) | |
3702 | { | |
3703 | default: | |
3704 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, illegal insn #1"); | |
3705 | break; | |
3706 | ||
3707 | case REG: | |
ab78d4a8 MM |
3708 | if (REGNO (addr) == ARG_POINTER_REGNUM) |
3709 | abort_with_insn (addr, "Arg pointer not eliminated."); | |
3710 | ||
cee98a59 MM |
3711 | fprintf (file, "0(%s)", reg_names [REGNO (addr)]); |
3712 | break; | |
3713 | ||
3714 | case PLUS: | |
3715 | { | |
3716 | register rtx reg = (rtx)0; | |
3717 | register rtx offset = (rtx)0; | |
3718 | register rtx arg0 = XEXP (addr, 0); | |
3719 | register rtx arg1 = XEXP (addr, 1); | |
3720 | ||
3721 | if (GET_CODE (arg0) == REG) | |
3722 | { | |
3723 | reg = arg0; | |
3724 | offset = arg1; | |
3725 | if (GET_CODE (offset) == REG) | |
3726 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, 2 regs"); | |
3727 | } | |
3728 | else if (GET_CODE (arg1) == REG) | |
3729 | { | |
3730 | reg = arg1; | |
3731 | offset = arg0; | |
3732 | } | |
3733 | else if (CONSTANT_P (arg0) && CONSTANT_P (arg1)) | |
3734 | { | |
3735 | output_addr_const (file, addr); | |
3736 | break; | |
3737 | } | |
3738 | else | |
3739 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, no regs"); | |
3740 | ||
3741 | if (!CONSTANT_P (offset)) | |
3742 | abort_with_insn (addr, "PRINT_OPERAND_ADDRESS, illegal insn #2"); | |
3743 | ||
ab78d4a8 MM |
3744 | if (REGNO (reg) == ARG_POINTER_REGNUM) |
3745 | abort_with_insn (addr, "Arg pointer not eliminated."); | |
3746 | ||
cee98a59 MM |
3747 | output_addr_const (file, offset); |
3748 | fprintf (file, "(%s)", reg_names [REGNO (reg)]); | |
3749 | } | |
3750 | break; | |
3751 | ||
3752 | case LABEL_REF: | |
3753 | case SYMBOL_REF: | |
3754 | case CONST_INT: | |
3755 | case CONST: | |
3756 | output_addr_const (file, addr); | |
3757 | break; | |
3758 | } | |
3759 | } | |
3760 | ||
3761 | \f | |
3762 | /* If optimizing for the global pointer, keep track of all of | |
3763 | the externs, so that at the end of the file, we can emit | |
3764 | the appropriate .extern declaration for them, before writing | |
3765 | out the text section. We assume that all names passed to | |
3766 | us are in the permanent obstack, so that they will be valid | |
3767 | at the end of the compilation. | |
3768 | ||
3769 | If we have -G 0, or the extern size is unknown, don't bother | |
3770 | emitting the .externs. */ | |
3771 | ||
3772 | int | |
3773 | mips_output_external (file, decl, name) | |
3774 | FILE *file; | |
3775 | tree decl; | |
3776 | char *name; | |
3777 | { | |
3778 | register struct extern_list *p; | |
3779 | int len; | |
3780 | ||
3781 | if (TARGET_GP_OPT | |
cee98a59 MM |
3782 | && ((TREE_CODE (decl)) != FUNCTION_DECL) |
3783 | && ((len = int_size_in_bytes (TREE_TYPE (decl))) > 0)) | |
3784 | { | |
3785 | p = (struct extern_list *)permalloc ((long) sizeof (struct extern_list)); | |
3786 | p->next = extern_head; | |
3787 | p->name = name; | |
3788 | p->size = len; | |
3789 | extern_head = p; | |
3790 | } | |
5619cc87 JW |
3791 | |
3792 | #ifdef ASM_OUTPUT_UNDEF_FUNCTION | |
dd947ed9 RK |
3793 | if (TREE_CODE (decl) == FUNCTION_DECL |
3794 | /* ??? Don't include alloca, since gcc will always expand it | |
3795 | inline. If we don't do this, libg++ fails to build. */ | |
3796 | && strcmp (name, "alloca")) | |
5619cc87 JW |
3797 | { |
3798 | p = (struct extern_list *)permalloc ((long) sizeof (struct extern_list)); | |
3799 | p->next = extern_head; | |
3800 | p->name = name; | |
3801 | p->size = -1; | |
3802 | extern_head = p; | |
3803 | } | |
3804 | #endif | |
3805 | ||
3806 | return 0; | |
3807 | } | |
3808 | ||
3809 | #ifdef ASM_OUTPUT_UNDEF_FUNCTION | |
3810 | int | |
3811 | mips_output_external_libcall (file, name) | |
3812 | FILE *file; | |
3813 | char *name; | |
3814 | { | |
3815 | register struct extern_list *p; | |
3816 | ||
3817 | p = (struct extern_list *)permalloc ((long) sizeof (struct extern_list)); | |
3818 | p->next = extern_head; | |
3819 | p->name = name; | |
3820 | p->size = -1; | |
3821 | extern_head = p; | |
3822 | ||
cee98a59 MM |
3823 | return 0; |
3824 | } | |
5619cc87 | 3825 | #endif |
cee98a59 MM |
3826 | |
3827 | \f | |
3828 | /* Compute a string to use as a temporary file name. */ | |
3829 | ||
147255d8 JW |
3830 | /* On MSDOS, write temp files in current dir |
3831 | because there's no place else we can expect to use. */ | |
3832 | #if __MSDOS__ | |
3833 | #ifndef P_tmpdir | |
3834 | #define P_tmpdir "./" | |
3835 | #endif | |
3836 | #endif | |
3837 | ||
cee98a59 MM |
3838 | static FILE * |
3839 | make_temp_file () | |
3840 | { | |
cee98a59 MM |
3841 | FILE *stream; |
3842 | char *base = getenv ("TMPDIR"); | |
3843 | int len; | |
3844 | ||
3845 | if (base == (char *)0) | |
3846 | { | |
3847 | #ifdef P_tmpdir | |
3848 | if (access (P_tmpdir, R_OK | W_OK) == 0) | |
3849 | base = P_tmpdir; | |
3850 | else | |
3851 | #endif | |
3852 | if (access ("/usr/tmp", R_OK | W_OK) == 0) | |
3853 | base = "/usr/tmp/"; | |
3854 | else | |
3855 | base = "/tmp/"; | |
3856 | } | |
3857 | ||
3858 | len = strlen (base); | |
147255d8 JW |
3859 | /* temp_filename is global, so we must use malloc, not alloca. */ |
3860 | temp_filename = (char *) xmalloc (len + sizeof("/ctXXXXXX")); | |
cee98a59 MM |
3861 | strcpy (temp_filename, base); |
3862 | if (len > 0 && temp_filename[len-1] != '/') | |
3863 | temp_filename[len++] = '/'; | |
3864 | ||
147255d8 | 3865 | strcpy (temp_filename + len, "ctXXXXXX"); |
cee98a59 MM |
3866 | mktemp (temp_filename); |
3867 | ||
3868 | stream = fopen (temp_filename, "w+"); | |
3869 | if (!stream) | |
3870 | pfatal_with_name (temp_filename); | |
3871 | ||
147255d8 JW |
3872 | #ifndef __MSDOS__ |
3873 | /* In MSDOS, we cannot unlink the temporary file until we are finished using | |
3874 | it. Otherwise, we delete it now, so that it will be gone even if the | |
3875 | compiler happens to crash. */ | |
cee98a59 | 3876 | unlink (temp_filename); |
147255d8 | 3877 | #endif |
cee98a59 MM |
3878 | return stream; |
3879 | } | |
3880 | ||
3881 | \f | |
3882 | /* Emit a new filename to a stream. If this is MIPS ECOFF, watch out | |
3883 | for .file's that start within a function. If we are smuggling stabs, try to | |
3884 | put out a MIPS ECOFF file and a stab. */ | |
3885 | ||
3886 | void | |
3887 | mips_output_filename (stream, name) | |
3888 | FILE *stream; | |
3889 | char *name; | |
3890 | { | |
3891 | static int first_time = TRUE; | |
3892 | char ltext_label_name[100]; | |
3893 | ||
3894 | if (first_time) | |
3895 | { | |
3896 | first_time = FALSE; | |
3897 | SET_FILE_NUMBER (); | |
3898 | current_function_file = name; | |
99107e86 PE |
3899 | fprintf (stream, "\t.file\t%d ", num_source_filenames); |
3900 | output_quoted_string (stream, name); | |
3901 | fprintf (stream, "\n"); | |
2bacb292 | 3902 | /* This tells mips-tfile that stabs will follow. */ |
9987501f MM |
3903 | if (!TARGET_GAS && write_symbols == DBX_DEBUG) |
3904 | fprintf (stream, "\t#@stabs\n"); | |
cee98a59 MM |
3905 | } |
3906 | ||
2bacb292 | 3907 | else if (write_symbols == DBX_DEBUG) |
cee98a59 MM |
3908 | { |
3909 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
99107e86 PE |
3910 | fprintf (stream, "%s ", ASM_STABS_OP); |
3911 | output_quoted_string (stream, name); | |
3912 | fprintf (stream, ",%d,0,0,%s\n", N_SOL, <ext_label_name[1]); | |
cee98a59 MM |
3913 | } |
3914 | ||
3915 | else if (name != current_function_file | |
3916 | && strcmp (name, current_function_file) != 0) | |
3917 | { | |
3918 | if (inside_function && !TARGET_GAS) | |
3919 | { | |
3920 | if (!file_in_function_warning) | |
3921 | { | |
3922 | file_in_function_warning = TRUE; | |
3923 | ignore_line_number = TRUE; | |
3924 | warning ("MIPS ECOFF format does not allow changing filenames within functions with #line"); | |
3925 | } | |
3926 | ||
99107e86 | 3927 | fprintf (stream, "\t#.file\t%d ", num_source_filenames); |
cee98a59 MM |
3928 | } |
3929 | ||
3930 | else | |
3931 | { | |
3932 | SET_FILE_NUMBER (); | |
3933 | current_function_file = name; | |
99107e86 | 3934 | fprintf (stream, "\t.file\t%d ", num_source_filenames); |
cee98a59 | 3935 | } |
99107e86 PE |
3936 | output_quoted_string (stream, name); |
3937 | fprintf (stream, "\n"); | |
cee98a59 MM |
3938 | } |
3939 | } | |
3940 | ||
3941 | \f | |
3942 | /* Emit a linenumber. For encapsulated stabs, we need to put out a stab | |
3943 | as well as a .loc, since it is possible that MIPS ECOFF might not be | |
3944 | able to represent the location for inlines that come from a different | |
3945 | file. */ | |
3946 | ||
3947 | void | |
3948 | mips_output_lineno (stream, line) | |
3949 | FILE *stream; | |
3950 | int line; | |
3951 | { | |
2bacb292 | 3952 | if (write_symbols == DBX_DEBUG) |
cee98a59 MM |
3953 | { |
3954 | ++sym_lineno; | |
3955 | fprintf (stream, "$LM%d:\n\t%s %d,0,%d,$LM%d\n", | |
3956 | sym_lineno, ASM_STABN_OP, N_SLINE, line, sym_lineno); | |
3957 | } | |
3958 | ||
3959 | else | |
3960 | { | |
3961 | fprintf (stream, "\n\t%s.loc\t%d %d\n", | |
3962 | (ignore_line_number) ? "#" : "", | |
3963 | num_source_filenames, line); | |
3964 | ||
3965 | LABEL_AFTER_LOC (stream); | |
3966 | } | |
3967 | } | |
3968 | ||
65437fe8 MM |
3969 | \f |
3970 | /* If defined, a C statement to be executed just prior to the | |
3971 | output of assembler code for INSN, to modify the extracted | |
3972 | operands so they will be output differently. | |
3973 | ||
3974 | Here the argument OPVEC is the vector containing the operands | |
3975 | extracted from INSN, and NOPERANDS is the number of elements of | |
3976 | the vector which contain meaningful data for this insn. The | |
3977 | contents of this vector are what will be used to convert the | |
3978 | insn template into assembler code, so you can change the | |
3979 | assembler output by changing the contents of the vector. | |
3980 | ||
3981 | We use it to check if the current insn needs a nop in front of it | |
3982 | because of load delays, and also to update the delay slot | |
3983 | statistics. */ | |
3984 | ||
85098019 JW |
3985 | /* ??? There is no real need for this function, because it never actually |
3986 | emits a NOP anymore. */ | |
3987 | ||
65437fe8 MM |
3988 | void |
3989 | final_prescan_insn (insn, opvec, noperands) | |
3990 | rtx insn; | |
3991 | rtx opvec[]; | |
3992 | int noperands; | |
3993 | { | |
3994 | if (dslots_number_nops > 0) | |
3995 | { | |
65437fe8 MM |
3996 | rtx pattern = PATTERN (insn); |
3997 | int length = get_attr_length (insn); | |
3998 | ||
3999 | /* Do we need to emit a NOP? */ | |
4000 | if (length == 0 | |
4001 | || (mips_load_reg != (rtx)0 && reg_mentioned_p (mips_load_reg, pattern)) | |
4002 | || (mips_load_reg2 != (rtx)0 && reg_mentioned_p (mips_load_reg2, pattern)) | |
4003 | || (mips_load_reg3 != (rtx)0 && reg_mentioned_p (mips_load_reg3, pattern)) | |
4004 | || (mips_load_reg4 != (rtx)0 && reg_mentioned_p (mips_load_reg4, pattern))) | |
85098019 | 4005 | fputs ("\t#nop\n", asm_out_file); |
65437fe8 MM |
4006 | |
4007 | else | |
4008 | dslots_load_filled++; | |
4009 | ||
4010 | while (--dslots_number_nops > 0) | |
85098019 | 4011 | fputs ("\t#nop\n", asm_out_file); |
65437fe8 MM |
4012 | |
4013 | mips_load_reg = (rtx)0; | |
4014 | mips_load_reg2 = (rtx)0; | |
4015 | mips_load_reg3 = (rtx)0; | |
4016 | mips_load_reg4 = (rtx)0; | |
65437fe8 MM |
4017 | } |
4018 | ||
4019 | if (TARGET_STATS) | |
4020 | { | |
4021 | enum rtx_code code = GET_CODE (insn); | |
4022 | if (code == JUMP_INSN || code == CALL_INSN) | |
4023 | dslots_jump_total++; | |
4024 | } | |
4025 | } | |
4026 | ||
cee98a59 MM |
4027 | \f |
4028 | /* Output at beginning of assembler file. | |
4029 | If we are optimizing to use the global pointer, create a temporary | |
4030 | file to hold all of the text stuff, and write it out to the end. | |
4031 | This is needed because the MIPS assembler is evidently one pass, | |
4032 | and if it hasn't seen the relevant .comm/.lcomm/.extern/.sdata | |
4033 | declaration when the code is processed, it generates a two | |
4034 | instruction sequence. */ | |
4035 | ||
4036 | void | |
4037 | mips_asm_file_start (stream) | |
4038 | FILE *stream; | |
4039 | { | |
4040 | ASM_OUTPUT_SOURCE_FILENAME (stream, main_input_filename); | |
4041 | ||
4042 | /* Versions of the MIPS assembler before 2.20 generate errors | |
4043 | if a branch inside of a .set noreorder section jumps to a | |
4044 | label outside of the .set noreorder section. Revision 2.20 | |
4045 | just set nobopt silently rather than fixing the bug. */ | |
4046 | ||
4047 | if (TARGET_MIPS_AS && optimize && flag_delayed_branch) | |
4048 | fprintf (stream, "\t.set\tnobopt\n"); | |
4049 | ||
ffa9d0b1 | 4050 | /* Generate the pseudo ops that System V.4 wants. */ |
c388a0c4 RS |
4051 | #ifndef ABICALLS_ASM_OP |
4052 | #define ABICALLS_ASM_OP ".abicalls" | |
4053 | #endif | |
cee98a59 | 4054 | if (TARGET_ABICALLS) |
ffa9d0b1 | 4055 | /* ??? but do not want this (or want pic0) if -non-shared? */ |
c388a0c4 | 4056 | fprintf (stream, "\t%s\n", ABICALLS_ASM_OP); |
cee98a59 | 4057 | |
d7a58f30 JW |
4058 | /* This code exists so that we can put all externs before all symbol |
4059 | references. This is necessary for the assembler's global pointer | |
4060 | optimizations to work. */ | |
4061 | /* ??? Current versions of gas do not require that externs occur before | |
4062 | symbol references. This means that this code is unnecessary when | |
4063 | gas is being used. This gas feature hasn't been well tested as yet | |
4064 | though. */ | |
cee98a59 MM |
4065 | if (TARGET_GP_OPT) |
4066 | { | |
4067 | asm_out_data_file = stream; | |
4068 | asm_out_text_file = make_temp_file (); | |
4069 | } | |
4070 | else | |
4071 | asm_out_data_file = asm_out_text_file = stream; | |
4072 | ||
cee98a59 MM |
4073 | print_options (stream); |
4074 | } | |
4075 | ||
4076 | \f | |
4077 | /* If we are optimizing the global pointer, emit the text section now | |
4078 | and any small externs which did not have .comm, etc that are | |
4079 | needed. Also, give a warning if the data area is more than 32K and | |
4080 | -pic because 3 instructions are needed to reference the data | |
4081 | pointers. */ | |
4082 | ||
4083 | void | |
4084 | mips_asm_file_end (file) | |
4085 | FILE *file; | |
4086 | { | |
4087 | char buffer[8192]; | |
4088 | tree name_tree; | |
4089 | struct extern_list *p; | |
4090 | int len; | |
842eb20e MM |
4091 | |
4092 | if (HALF_PIC_P ()) | |
4093 | HALF_PIC_FINISH (file); | |
cee98a59 | 4094 | |
5619cc87 | 4095 | if (extern_head) |
cee98a59 | 4096 | { |
5619cc87 | 4097 | fputs ("\n", file); |
cee98a59 MM |
4098 | |
4099 | for (p = extern_head; p != 0; p = p->next) | |
4100 | { | |
4101 | name_tree = get_identifier (p->name); | |
c831afd5 MM |
4102 | |
4103 | /* Positively ensure only one .extern for any given symbol. */ | |
4104 | if (! TREE_ASM_WRITTEN (name_tree)) | |
cee98a59 | 4105 | { |
c831afd5 | 4106 | TREE_ASM_WRITTEN (name_tree) = 1; |
5619cc87 JW |
4107 | #ifdef ASM_OUTPUT_UNDEF_FUNCTION |
4108 | if (p->size == -1) | |
4109 | ASM_OUTPUT_UNDEF_FUNCTION (file, p->name); | |
4110 | else | |
4111 | #endif | |
4112 | { | |
4113 | fputs ("\t.extern\t", file); | |
4114 | assemble_name (file, p->name); | |
4115 | fprintf (file, ", %d\n", p->size); | |
4116 | } | |
cee98a59 MM |
4117 | } |
4118 | } | |
5619cc87 JW |
4119 | } |
4120 | ||
4121 | if (TARGET_GP_OPT) | |
4122 | { | |
cee98a59 MM |
4123 | fprintf (file, "\n\t.text\n"); |
4124 | rewind (asm_out_text_file); | |
4125 | if (ferror (asm_out_text_file)) | |
c831afd5 | 4126 | fatal_io_error (temp_filename); |
cee98a59 MM |
4127 | |
4128 | while ((len = fread (buffer, 1, sizeof (buffer), asm_out_text_file)) > 0) | |
4129 | if (fwrite (buffer, 1, len, file) != len) | |
c831afd5 | 4130 | pfatal_with_name (asm_file_name); |
cee98a59 MM |
4131 | |
4132 | if (len < 0) | |
c831afd5 | 4133 | pfatal_with_name (temp_filename); |
cee98a59 MM |
4134 | |
4135 | if (fclose (asm_out_text_file) != 0) | |
c831afd5 | 4136 | pfatal_with_name (temp_filename); |
147255d8 JW |
4137 | |
4138 | #ifdef __MSDOS__ | |
4139 | unlink (temp_filename); | |
4140 | #endif | |
cee98a59 MM |
4141 | } |
4142 | } | |
4143 | ||
9987501f MM |
4144 | \f |
4145 | /* Emit either a label, .comm, or .lcomm directive, and mark | |
4146 | that the symbol is used, so that we don't emit an .extern | |
4147 | for it in mips_asm_file_end. */ | |
4148 | ||
4149 | void | |
4150 | mips_declare_object (stream, name, init_string, final_string, size) | |
4151 | FILE *stream; | |
4152 | char *name; | |
4153 | char *init_string; | |
4154 | char *final_string; | |
4155 | int size; | |
4156 | { | |
4157 | fputs (init_string, stream); /* "", "\t.comm\t", or "\t.lcomm\t" */ | |
4158 | assemble_name (stream, name); | |
4159 | fprintf (stream, final_string, size); /* ":\n", ",%u\n", ",%u\n" */ | |
4160 | ||
147255d8 | 4161 | if (TARGET_GP_OPT) |
9987501f MM |
4162 | { |
4163 | tree name_tree = get_identifier (name); | |
4164 | TREE_ASM_WRITTEN (name_tree) = 1; | |
4165 | } | |
4166 | } | |
4167 | ||
dbe9742d MM |
4168 | \f |
4169 | /* Output a double precision value to the assembler. If both the | |
4170 | host and target are IEEE, emit the values in hex. */ | |
4171 | ||
4172 | void | |
4173 | mips_output_double (stream, value) | |
4174 | FILE *stream; | |
4175 | REAL_VALUE_TYPE value; | |
4176 | { | |
4177 | #ifdef REAL_VALUE_TO_TARGET_DOUBLE | |
4178 | long value_long[2]; | |
4179 | REAL_VALUE_TO_TARGET_DOUBLE (value, value_long); | |
4180 | ||
4181 | fprintf (stream, "\t.word\t0x%08lx\t\t# %.20g\n\t.word\t0x%08lx\n", | |
4182 | value_long[0], value, value_long[1]); | |
4183 | #else | |
4184 | fprintf (stream, "\t.double\t%.20g\n", value); | |
4185 | #endif | |
4186 | } | |
4187 | ||
4188 | ||
4189 | /* Output a single precision value to the assembler. If both the | |
4190 | host and target are IEEE, emit the values in hex. */ | |
4191 | ||
4192 | void | |
4193 | mips_output_float (stream, value) | |
4194 | FILE *stream; | |
4195 | REAL_VALUE_TYPE value; | |
4196 | { | |
4197 | #ifdef REAL_VALUE_TO_TARGET_SINGLE | |
4198 | long value_long; | |
4199 | REAL_VALUE_TO_TARGET_SINGLE (value, value_long); | |
4200 | ||
4201 | fprintf (stream, "\t.word\t0x%08lx\t\t# %.12g (float)\n", value_long, value); | |
4202 | #else | |
4203 | fprintf (stream, "\t.float\t%.12g\n", value); | |
4204 | #endif | |
4205 | } | |
4206 | ||
7bea35e7 MM |
4207 | \f |
4208 | /* Return TRUE if any register used in the epilogue is used. This to insure | |
4209 | any insn put into the epilogue delay slots is safe. */ | |
4210 | ||
4211 | int | |
4212 | epilogue_reg_mentioned_p (insn) | |
4213 | rtx insn; | |
4214 | { | |
4215 | register char *fmt; | |
4216 | register int i; | |
4217 | register enum rtx_code code; | |
4218 | register int regno; | |
4219 | ||
4220 | if (insn == (rtx)0) | |
4221 | return 0; | |
4222 | ||
4223 | if (GET_CODE (insn) == LABEL_REF) | |
4224 | return 0; | |
4225 | ||
4226 | code = GET_CODE (insn); | |
4227 | switch (code) | |
4228 | { | |
4229 | case REG: | |
4230 | regno = REGNO (insn); | |
4231 | if (regno == STACK_POINTER_REGNUM) | |
4232 | return 1; | |
4233 | ||
4234 | if (regno == FRAME_POINTER_REGNUM && frame_pointer_needed) | |
4235 | return 1; | |
4236 | ||
4237 | if (!call_used_regs[regno]) | |
4238 | return 1; | |
4239 | ||
4240 | if (regno != MIPS_TEMP1_REGNUM && regno != MIPS_TEMP2_REGNUM) | |
4241 | return 0; | |
4242 | ||
4243 | if (!current_frame_info.initialized) | |
4244 | compute_frame_size (get_frame_size ()); | |
4245 | ||
4246 | return (current_frame_info.total_size >= 32768); | |
4247 | ||
4248 | case SCRATCH: | |
4249 | case CC0: | |
4250 | case PC: | |
4251 | case CONST_INT: | |
4252 | case CONST_DOUBLE: | |
4253 | return 0; | |
4254 | } | |
4255 | ||
4256 | fmt = GET_RTX_FORMAT (code); | |
4257 | for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) | |
4258 | { | |
4259 | if (fmt[i] == 'E') | |
4260 | { | |
4261 | register int j; | |
4262 | for (j = XVECLEN (insn, i) - 1; j >= 0; j--) | |
4263 | if (epilogue_reg_mentioned_p (XVECEXP (insn, i, j))) | |
4264 | return 1; | |
4265 | } | |
4266 | else if (fmt[i] == 'e' && epilogue_reg_mentioned_p (XEXP (insn, i))) | |
4267 | return 1; | |
4268 | } | |
4269 | ||
4270 | return 0; | |
4271 | } | |
4272 | ||
92544bdf ILT |
4273 | \f |
4274 | /* When generating embedded PIC code we may need to get the address of | |
4275 | the current function. We will need it if we take the address of | |
4276 | any symbol in the .text section. */ | |
4277 | ||
4278 | void | |
4279 | mips_finalize_pic () | |
4280 | { | |
4281 | rtx seq; | |
4282 | ||
4283 | if (! TARGET_EMBEDDED_PIC) | |
4284 | return; | |
4285 | if (embedded_pic_fnaddr_rtx == NULL) | |
4286 | return; | |
4287 | ||
4288 | start_sequence (); | |
4289 | ||
4290 | emit_insn (gen_get_fnaddr (embedded_pic_fnaddr_rtx, | |
4291 | XEXP (DECL_RTL (current_function_decl), 0))); | |
4292 | ||
4293 | seq = gen_sequence (); | |
4294 | end_sequence (); | |
4295 | emit_insn_after (seq, get_insns ()); | |
4296 | ||
4297 | embedded_pic_fnaddr_rtx = NULL; | |
4298 | } | |
4299 | ||
cee98a59 MM |
4300 | \f |
4301 | /* Return the bytes needed to compute the frame pointer from the current | |
4302 | stack pointer. | |
4303 | ||
4304 | Mips stack frames look like: | |
4305 | ||
4306 | Before call After call | |
4307 | +-----------------------+ +-----------------------+ | |
4308 | high | | | | | |
4309 | mem. | | | | | |
4310 | | caller's temps. | | caller's temps. | | |
4311 | | | | | | |
4312 | +-----------------------+ +-----------------------+ | |
4313 | | | | | | |
4314 | | arguments on stack. | | arguments on stack. | | |
4315 | | | | | | |
4316 | +-----------------------+ +-----------------------+ | |
4317 | | 4 words to save | | 4 words to save | | |
4318 | | arguments passed | | arguments passed | | |
4319 | | in registers, even | | in registers, even | | |
ffa9d0b1 | 4320 | SP->| if not passed. | VFP->| if not passed. | |
cee98a59 | 4321 | +-----------------------+ +-----------------------+ |
cee98a59 MM |
4322 | | | |
4323 | | fp register save | | |
4324 | | | | |
4325 | +-----------------------+ | |
4326 | | | | |
4327 | | gp register save | | |
4328 | | | | |
4329 | +-----------------------+ | |
4330 | | | | |
ab78d4a8 MM |
4331 | | local variables | |
4332 | | | | |
4333 | +-----------------------+ | |
4334 | | | | |
cee98a59 MM |
4335 | | alloca allocations | |
4336 | | | | |
4337 | +-----------------------+ | |
4338 | | | | |
ffa9d0b1 JW |
4339 | | GP save for V.4 abi | |
4340 | | | | |
4341 | +-----------------------+ | |
4342 | | | | |
cee98a59 MM |
4343 | | arguments on stack | |
4344 | | | | |
4345 | +-----------------------+ | |
4346 | | 4 words to save | | |
4347 | | arguments passed | | |
4348 | | in registers, even | | |
4349 | low SP->| if not passed. | | |
4350 | memory +-----------------------+ | |
4351 | ||
4352 | */ | |
4353 | ||
7bea35e7 | 4354 | long |
cee98a59 MM |
4355 | compute_frame_size (size) |
4356 | int size; /* # of var. bytes allocated */ | |
4357 | { | |
4358 | int regno; | |
7bea35e7 MM |
4359 | long total_size; /* # bytes that the entire frame takes up */ |
4360 | long var_size; /* # bytes that variables take up */ | |
4361 | long args_size; /* # bytes that outgoing arguments take up */ | |
4362 | long extra_size; /* # extra bytes */ | |
4363 | long gp_reg_rounded; /* # bytes needed to store gp after rounding */ | |
4364 | long gp_reg_size; /* # bytes needed to store gp regs */ | |
4365 | long fp_reg_size; /* # bytes needed to store fp regs */ | |
4366 | long mask; /* mask of saved gp registers */ | |
4367 | long fmask; /* mask of saved fp registers */ | |
4368 | int fp_inc; /* 1 or 2 depending on the size of fp regs */ | |
4369 | long fp_bits; /* bitmask to use for each fp register */ | |
cee98a59 | 4370 | |
cee98a59 MM |
4371 | gp_reg_size = 0; |
4372 | fp_reg_size = 0; | |
4373 | mask = 0; | |
4374 | fmask = 0; | |
ab78d4a8 MM |
4375 | extra_size = MIPS_STACK_ALIGN (((TARGET_ABICALLS) ? UNITS_PER_WORD : 0)); |
4376 | var_size = MIPS_STACK_ALIGN (size); | |
4377 | args_size = MIPS_STACK_ALIGN (current_function_outgoing_args_size); | |
4378 | ||
4379 | /* The MIPS 3.0 linker does not like functions that dynamically | |
4380 | allocate the stack and have 0 for STACK_DYNAMIC_OFFSET, since it | |
4381 | looks like we are trying to create a second frame pointer to the | |
4382 | function, so allocate some stack space to make it happy. */ | |
4383 | ||
4384 | if (args_size == 0 && current_function_calls_alloca) | |
258d81a8 | 4385 | args_size = 4*UNITS_PER_WORD; |
ab78d4a8 MM |
4386 | |
4387 | total_size = var_size + args_size + extra_size; | |
cee98a59 MM |
4388 | |
4389 | /* Calculate space needed for gp registers. */ | |
4390 | for (regno = GP_REG_FIRST; regno <= GP_REG_LAST; regno++) | |
4391 | { | |
4392 | if (MUST_SAVE_REGISTER (regno)) | |
4393 | { | |
4394 | gp_reg_size += UNITS_PER_WORD; | |
7bea35e7 | 4395 | mask |= 1L << (regno - GP_REG_FIRST); |
cee98a59 MM |
4396 | } |
4397 | } | |
4398 | ||
4399 | /* Calculate space needed for fp registers. */ | |
4400 | if (TARGET_FLOAT64) | |
4401 | { | |
4402 | fp_inc = 1; | |
4403 | fp_bits = 1; | |
4404 | } | |
4405 | else | |
4406 | { | |
4407 | fp_inc = 2; | |
4408 | fp_bits = 3; | |
4409 | } | |
4410 | ||
4411 | for (regno = FP_REG_FIRST; regno <= FP_REG_LAST; regno += fp_inc) | |
4412 | { | |
4413 | if (regs_ever_live[regno] && !call_used_regs[regno]) | |
4414 | { | |
147255d8 | 4415 | fp_reg_size += fp_inc * UNITS_PER_FPREG; |
cee98a59 MM |
4416 | fmask |= fp_bits << (regno - FP_REG_FIRST); |
4417 | } | |
4418 | } | |
4419 | ||
4420 | gp_reg_rounded = MIPS_STACK_ALIGN (gp_reg_size); | |
4421 | total_size += gp_reg_rounded + fp_reg_size; | |
4422 | ||
4423 | if (total_size == extra_size) | |
4424 | total_size = extra_size = 0; | |
ffa9d0b1 JW |
4425 | else if (TARGET_ABICALLS) |
4426 | { | |
4427 | /* Add the context-pointer to the saved registers. */ | |
4428 | gp_reg_size += UNITS_PER_WORD; | |
4429 | mask |= 1L << (PIC_OFFSET_TABLE_REGNUM - GP_REG_FIRST); | |
4430 | total_size -= gp_reg_rounded; | |
4431 | gp_reg_rounded = MIPS_STACK_ALIGN (gp_reg_size); | |
4432 | total_size += gp_reg_rounded; | |
4433 | } | |
cee98a59 MM |
4434 | |
4435 | /* Save other computed information. */ | |
4436 | current_frame_info.total_size = total_size; | |
4437 | current_frame_info.var_size = var_size; | |
4438 | current_frame_info.args_size = args_size; | |
4439 | current_frame_info.extra_size = extra_size; | |
4440 | current_frame_info.gp_reg_size = gp_reg_size; | |
4441 | current_frame_info.fp_reg_size = fp_reg_size; | |
4442 | current_frame_info.mask = mask; | |
4443 | current_frame_info.fmask = fmask; | |
4444 | current_frame_info.initialized = reload_completed; | |
0fb5ac6f | 4445 | current_frame_info.num_gp = gp_reg_size / UNITS_PER_WORD; |
147255d8 | 4446 | current_frame_info.num_fp = fp_reg_size / (fp_inc * UNITS_PER_FPREG); |
cee98a59 MM |
4447 | |
4448 | if (mask) | |
4449 | { | |
ffa9d0b1 JW |
4450 | unsigned long offset = args_size + extra_size + var_size |
4451 | + gp_reg_size - UNITS_PER_WORD; | |
cee98a59 MM |
4452 | current_frame_info.gp_sp_offset = offset; |
4453 | current_frame_info.gp_save_offset = offset - total_size; | |
4454 | } | |
258d81a8 MM |
4455 | else |
4456 | { | |
4457 | current_frame_info.gp_sp_offset = 0; | |
4458 | current_frame_info.gp_save_offset = 0; | |
4459 | } | |
4460 | ||
cee98a59 MM |
4461 | |
4462 | if (fmask) | |
4463 | { | |
147255d8 JW |
4464 | unsigned long offset = (args_size + extra_size + var_size |
4465 | + gp_reg_rounded + fp_reg_size | |
4466 | - fp_inc * UNITS_PER_FPREG); | |
cee98a59 MM |
4467 | current_frame_info.fp_sp_offset = offset; |
4468 | current_frame_info.fp_save_offset = offset - total_size + UNITS_PER_WORD; | |
4469 | } | |
258d81a8 MM |
4470 | else |
4471 | { | |
4472 | current_frame_info.fp_sp_offset = 0; | |
4473 | current_frame_info.fp_save_offset = 0; | |
4474 | } | |
cee98a59 MM |
4475 | |
4476 | /* Ok, we're done. */ | |
4477 | return total_size; | |
4478 | } | |
4479 | ||
4480 | \f | |
7bea35e7 MM |
4481 | /* Common code to emit the insns (or to write the instructions to a file) |
4482 | to save/restore registers. | |
cee98a59 | 4483 | |
7bea35e7 MM |
4484 | Other parts of the code assume that MIPS_TEMP1_REGNUM (aka large_reg) |
4485 | is not modified within save_restore_insns. */ | |
4486 | ||
4487 | #define BITSET_P(value,bit) (((value) & (1L << (bit))) != 0) | |
4488 | ||
4489 | static void | |
4490 | save_restore_insns (store_p, large_reg, large_offset, file) | |
4491 | int store_p; /* true if this is prologue */ | |
4492 | rtx large_reg; /* register holding large offset constant or NULL */ | |
4493 | long large_offset; /* large constant offset value */ | |
4494 | FILE *file; /* file to write instructions to instead of making RTL */ | |
cee98a59 | 4495 | { |
7bea35e7 MM |
4496 | long mask = current_frame_info.mask; |
4497 | long fmask = current_frame_info.fmask; | |
cee98a59 | 4498 | int regno; |
7bea35e7 MM |
4499 | rtx base_reg_rtx; |
4500 | long base_offset; | |
4501 | long gp_offset; | |
4502 | long fp_offset; | |
4503 | long end_offset; | |
4504 | ||
4505 | if (frame_pointer_needed && !BITSET_P (mask, FRAME_POINTER_REGNUM - GP_REG_FIRST)) | |
4506 | abort (); | |
cee98a59 MM |
4507 | |
4508 | if (mask == 0 && fmask == 0) | |
4509 | return; | |
4510 | ||
cee98a59 MM |
4511 | /* Save registers starting from high to low. The debuggers prefer |
4512 | at least the return register be stored at func+4, and also it | |
4513 | allows us not to need a nop in the epilog if at least one | |
4514 | register is reloaded in addition to return address. */ | |
4515 | ||
7bea35e7 MM |
4516 | /* Save GP registers if needed. */ |
4517 | if (mask) | |
cee98a59 | 4518 | { |
7bea35e7 MM |
4519 | /* Pick which pointer to use as a base register. For small |
4520 | frames, just use the stack pointer. Otherwise, use a | |
4521 | temporary register. Save 2 cycles if the save area is near | |
4522 | the end of a large frame, by reusing the constant created in | |
4523 | the prologue/epilogue to adjust the stack frame. */ | |
cee98a59 | 4524 | |
7bea35e7 MM |
4525 | gp_offset = current_frame_info.gp_sp_offset; |
4526 | end_offset = gp_offset - (current_frame_info.gp_reg_size - UNITS_PER_WORD); | |
4527 | ||
4528 | if (gp_offset < 0 || end_offset < 0) | |
4529 | fatal ("gp_offset (%ld) or end_offset (%ld) is less than zero.", | |
4530 | gp_offset, end_offset); | |
4531 | ||
4532 | else if (gp_offset < 32768) | |
4533 | { | |
4534 | base_reg_rtx = stack_pointer_rtx; | |
4535 | base_offset = 0; | |
cee98a59 | 4536 | } |
cee98a59 | 4537 | |
7bea35e7 MM |
4538 | else if (large_reg != (rtx)0 |
4539 | && (((unsigned long)(large_offset - gp_offset)) < 32768) | |
4540 | && (((unsigned long)(large_offset - end_offset)) < 32768)) | |
4541 | { | |
4542 | base_reg_rtx = gen_rtx (REG, Pmode, MIPS_TEMP2_REGNUM); | |
4543 | base_offset = large_offset; | |
4544 | if (file == (FILE *)0) | |
147255d8 JW |
4545 | { |
4546 | if (TARGET_LONG64) | |
4547 | emit_insn (gen_adddi3 (base_reg_rtx, large_reg, stack_pointer_rtx)); | |
4548 | else | |
4549 | emit_insn (gen_addsi3 (base_reg_rtx, large_reg, stack_pointer_rtx)); | |
4550 | } | |
7bea35e7 | 4551 | else |
147255d8 JW |
4552 | fprintf (file, "\t%s\t%s,%s,%s\n", |
4553 | TARGET_LONG64 ? "daddu" : "addu", | |
7bea35e7 MM |
4554 | reg_names[MIPS_TEMP2_REGNUM], |
4555 | reg_names[REGNO (large_reg)], | |
4556 | reg_names[STACK_POINTER_REGNUM]); | |
4557 | } | |
cee98a59 | 4558 | |
7bea35e7 | 4559 | else |
cee98a59 | 4560 | { |
7bea35e7 MM |
4561 | base_reg_rtx = gen_rtx (REG, Pmode, MIPS_TEMP2_REGNUM); |
4562 | base_offset = gp_offset; | |
4563 | if (file == (FILE *)0) | |
cee98a59 | 4564 | { |
7bea35e7 | 4565 | emit_move_insn (base_reg_rtx, GEN_INT (gp_offset)); |
147255d8 JW |
4566 | if (TARGET_LONG64) |
4567 | emit_insn (gen_adddi3 (base_reg_rtx, base_reg_rtx, stack_pointer_rtx)); | |
4568 | else | |
4569 | emit_insn (gen_addsi3 (base_reg_rtx, base_reg_rtx, stack_pointer_rtx)); | |
cee98a59 | 4570 | } |
7bea35e7 | 4571 | else |
147255d8 | 4572 | fprintf (file, "\tli\t%s,0x%.08lx\t# %ld\n\t%s\t%s,%s,%s\n", |
7bea35e7 MM |
4573 | reg_names[MIPS_TEMP2_REGNUM], |
4574 | (long)base_offset, | |
4575 | (long)base_offset, | |
147255d8 | 4576 | TARGET_LONG64 ? "daddu" : "addu", |
7bea35e7 MM |
4577 | reg_names[MIPS_TEMP2_REGNUM], |
4578 | reg_names[MIPS_TEMP2_REGNUM], | |
4579 | reg_names[STACK_POINTER_REGNUM]); | |
cee98a59 | 4580 | } |
0fb5ac6f | 4581 | |
0fb5ac6f MM |
4582 | for (regno = GP_REG_LAST; regno >= GP_REG_FIRST; regno--) |
4583 | { | |
7bea35e7 | 4584 | if (BITSET_P (mask, regno - GP_REG_FIRST)) |
0fb5ac6f | 4585 | { |
7bea35e7 MM |
4586 | if (file == (FILE *)0) |
4587 | { | |
147255d8 JW |
4588 | rtx reg_rtx = gen_rtx (REG, word_mode, regno); |
4589 | rtx mem_rtx = gen_rtx (MEM, word_mode, | |
7bea35e7 MM |
4590 | gen_rtx (PLUS, Pmode, base_reg_rtx, |
4591 | GEN_INT (gp_offset - base_offset))); | |
0fb5ac6f | 4592 | |
7bea35e7 MM |
4593 | if (store_p) |
4594 | emit_move_insn (mem_rtx, reg_rtx); | |
ffa9d0b1 JW |
4595 | else if (!TARGET_ABICALLS |
4596 | || regno != (PIC_OFFSET_TABLE_REGNUM - GP_REG_FIRST)) | |
7bea35e7 MM |
4597 | emit_move_insn (reg_rtx, mem_rtx); |
4598 | } | |
0fb5ac6f | 4599 | else |
ffa9d0b1 JW |
4600 | { |
4601 | if (store_p || !TARGET_ABICALLS | |
4602 | || regno != (PIC_OFFSET_TABLE_REGNUM - GP_REG_FIRST)) | |
4603 | fprintf (file, "\t%s\t%s,%ld(%s)\n", | |
147255d8 JW |
4604 | (TARGET_64BIT |
4605 | ? (store_p) ? "sd" : "ld" | |
4606 | : (store_p) ? "sw" : "lw"), | |
ffa9d0b1 JW |
4607 | reg_names[regno], |
4608 | gp_offset - base_offset, | |
4609 | reg_names[REGNO(base_reg_rtx)]); | |
0fb5ac6f | 4610 | |
ffa9d0b1 | 4611 | } |
0fb5ac6f MM |
4612 | gp_offset -= UNITS_PER_WORD; |
4613 | } | |
4614 | } | |
4615 | } | |
7bea35e7 MM |
4616 | else |
4617 | { | |
4618 | base_reg_rtx = (rtx)0; /* Make sure these are initialzed */ | |
4619 | base_offset = 0; | |
4620 | } | |
0fb5ac6f | 4621 | |
7bea35e7 | 4622 | /* Save floating point registers if needed. */ |
0fb5ac6f MM |
4623 | if (fmask) |
4624 | { | |
4625 | int fp_inc = (TARGET_FLOAT64) ? 1 : 2; | |
147255d8 | 4626 | int fp_size = fp_inc * UNITS_PER_FPREG; |
0fb5ac6f | 4627 | |
7bea35e7 MM |
4628 | /* Pick which pointer to use as a base register. */ |
4629 | fp_offset = current_frame_info.fp_sp_offset; | |
147255d8 | 4630 | end_offset = fp_offset - (current_frame_info.fp_reg_size - fp_size); |
7bea35e7 MM |
4631 | |
4632 | if (fp_offset < 0 || end_offset < 0) | |
4633 | fatal ("fp_offset (%ld) or end_offset (%ld) is less than zero.", | |
4634 | fp_offset, end_offset); | |
4635 | ||
4636 | else if (fp_offset < 32768) | |
4637 | { | |
4638 | base_reg_rtx = stack_pointer_rtx; | |
4639 | base_offset = 0; | |
4640 | } | |
4641 | ||
4642 | else if (base_reg_rtx != (rtx)0 | |
4643 | && (((unsigned long)(base_offset - fp_offset)) < 32768) | |
4644 | && (((unsigned long)(base_offset - end_offset)) < 32768)) | |
4645 | { | |
4646 | ; /* already set up for gp registers above */ | |
4647 | } | |
4648 | ||
4649 | else if (large_reg != (rtx)0 | |
4650 | && (((unsigned long)(large_offset - fp_offset)) < 32768) | |
4651 | && (((unsigned long)(large_offset - end_offset)) < 32768)) | |
4652 | { | |
4653 | base_reg_rtx = gen_rtx (REG, Pmode, MIPS_TEMP2_REGNUM); | |
4654 | base_offset = large_offset; | |
4655 | if (file == (FILE *)0) | |
147255d8 JW |
4656 | { |
4657 | if (TARGET_LONG64) | |
4658 | emit_insn (gen_adddi3 (base_reg_rtx, large_reg, stack_pointer_rtx)); | |
4659 | else | |
4660 | emit_insn (gen_addsi3 (base_reg_rtx, large_reg, stack_pointer_rtx)); | |
4661 | } | |
7bea35e7 | 4662 | else |
147255d8 JW |
4663 | fprintf (file, "\t%s\t%s,%s,%s\n", |
4664 | TARGET_LONG64 ? "daddu" : "addu", | |
7bea35e7 MM |
4665 | reg_names[MIPS_TEMP2_REGNUM], |
4666 | reg_names[REGNO (large_reg)], | |
4667 | reg_names[STACK_POINTER_REGNUM]); | |
4668 | } | |
4669 | ||
4670 | else | |
4671 | { | |
4672 | base_reg_rtx = gen_rtx (REG, Pmode, MIPS_TEMP2_REGNUM); | |
4673 | base_offset = fp_offset; | |
4674 | if (file == (FILE *)0) | |
4675 | { | |
4676 | emit_move_insn (base_reg_rtx, GEN_INT (fp_offset)); | |
147255d8 JW |
4677 | if (TARGET_LONG64) |
4678 | emit_insn (gen_adddi3 (base_reg_rtx, base_reg_rtx, stack_pointer_rtx)); | |
4679 | else | |
4680 | emit_insn (gen_addsi3 (base_reg_rtx, base_reg_rtx, stack_pointer_rtx)); | |
7bea35e7 MM |
4681 | } |
4682 | else | |
147255d8 | 4683 | fprintf (file, "\tli\t%s,0x%.08lx\t# %ld\n\t%s\t%s,%s,%s\n", |
7bea35e7 MM |
4684 | reg_names[MIPS_TEMP2_REGNUM], |
4685 | (long)base_offset, | |
4686 | (long)base_offset, | |
147255d8 | 4687 | TARGET_LONG64 ? "daddu" : "addu", |
7bea35e7 MM |
4688 | reg_names[MIPS_TEMP2_REGNUM], |
4689 | reg_names[MIPS_TEMP2_REGNUM], | |
4690 | reg_names[STACK_POINTER_REGNUM]); | |
4691 | } | |
4692 | ||
0fb5ac6f MM |
4693 | for (regno = FP_REG_LAST-1; regno >= FP_REG_FIRST; regno -= fp_inc) |
4694 | { | |
7bea35e7 | 4695 | if (BITSET_P (fmask, regno - FP_REG_FIRST)) |
0fb5ac6f | 4696 | { |
7bea35e7 MM |
4697 | if (file == (FILE *)0) |
4698 | { | |
4699 | rtx reg_rtx = gen_rtx (REG, DFmode, regno); | |
4700 | rtx mem_rtx = gen_rtx (MEM, DFmode, | |
4701 | gen_rtx (PLUS, Pmode, base_reg_rtx, | |
4702 | GEN_INT (fp_offset - base_offset))); | |
0fb5ac6f | 4703 | |
7bea35e7 MM |
4704 | if (store_p) |
4705 | emit_move_insn (mem_rtx, reg_rtx); | |
4706 | else | |
4707 | emit_move_insn (reg_rtx, mem_rtx); | |
4708 | } | |
0fb5ac6f | 4709 | else |
7bea35e7 MM |
4710 | fprintf (file, "\t%s\t%s,%ld(%s)\n", |
4711 | (store_p) ? "s.d" : "l.d", | |
4712 | reg_names[regno], | |
4713 | fp_offset - base_offset, | |
4714 | reg_names[REGNO(base_reg_rtx)]); | |
4715 | ||
0fb5ac6f | 4716 | |
147255d8 | 4717 | fp_offset -= fp_size; |
0fb5ac6f MM |
4718 | } |
4719 | } | |
4720 | } | |
4721 | } | |
4722 | ||
cee98a59 MM |
4723 | \f |
4724 | /* Set up the stack and frame (if desired) for the function. */ | |
4725 | ||
4726 | void | |
4727 | function_prologue (file, size) | |
4728 | FILE *file; | |
4729 | int size; | |
4730 | { | |
7bea35e7 | 4731 | long tsize = current_frame_info.total_size; |
cee98a59 MM |
4732 | |
4733 | ASM_OUTPUT_SOURCE_FILENAME (file, DECL_SOURCE_FILE (current_function_decl)); | |
8a2d2f90 | 4734 | |
af173031 | 4735 | if (debug_info_level != DINFO_LEVEL_TERSE && write_symbols == SDB_DEBUG) |
8a2d2f90 | 4736 | ASM_OUTPUT_SOURCE_LINE (file, DECL_SOURCE_LINE (current_function_decl)); |
cee98a59 MM |
4737 | |
4738 | inside_function = 1; | |
4739 | fputs ("\t.ent\t", file); | |
4740 | assemble_name (file, current_function_name); | |
4741 | fputs ("\n", file); | |
7bea35e7 | 4742 | |
cee98a59 MM |
4743 | assemble_name (file, current_function_name); |
4744 | fputs (":\n", file); | |
4745 | ||
ffa9d0b1 | 4746 | fprintf (file, "\t.frame\t%s,%d,%s\t\t# vars= %d, regs= %d/%d, args= %d, extra= %d\n", |
ab78d4a8 MM |
4747 | reg_names[ (frame_pointer_needed) ? FRAME_POINTER_REGNUM : STACK_POINTER_REGNUM ], |
4748 | tsize, | |
0fb5ac6f MM |
4749 | reg_names[31 + GP_REG_FIRST], |
4750 | current_frame_info.var_size, | |
4751 | current_frame_info.num_gp, | |
4752 | current_frame_info.num_fp, | |
4753 | current_function_outgoing_args_size, | |
4754 | current_frame_info.extra_size); | |
4755 | ||
4756 | fprintf (file, "\t.mask\t0x%08lx,%d\n\t.fmask\t0x%08lx,%d\n", | |
4757 | current_frame_info.mask, | |
4758 | current_frame_info.gp_save_offset, | |
4759 | current_frame_info.fmask, | |
4760 | current_frame_info.fp_save_offset); | |
ffa9d0b1 JW |
4761 | |
4762 | if (TARGET_ABICALLS) | |
4763 | { | |
4764 | char *sp_str = reg_names[STACK_POINTER_REGNUM]; | |
4765 | ||
4766 | fprintf (file, "\t.set\tnoreorder\n\t.cpload\t%s\n\t.set\treorder\n", | |
4767 | reg_names[PIC_FUNCTION_ADDR_REGNUM]); | |
4768 | if (tsize > 0) | |
4769 | { | |
147255d8 JW |
4770 | fprintf (file, "\t%s\t%s,%s,%d\n", |
4771 | (TARGET_LONG64 ? "dsubu" : "subu"), | |
4772 | sp_str, sp_str, tsize); | |
ffa9d0b1 JW |
4773 | fprintf (file, "\t.cprestore %d\n", current_frame_info.args_size); |
4774 | } | |
4775 | } | |
0fb5ac6f MM |
4776 | } |
4777 | ||
4778 | \f | |
4779 | /* Expand the prologue into a bunch of separate insns. */ | |
4780 | ||
4781 | void | |
4782 | mips_expand_prologue () | |
4783 | { | |
4784 | int regno; | |
7bea35e7 | 4785 | long tsize; |
3f1f8d8c MM |
4786 | rtx tmp_rtx = (rtx)0; |
4787 | char *arg_name = (char *)0; | |
4788 | tree fndecl = current_function_decl; | |
4789 | tree fntype = TREE_TYPE (fndecl); | |
4790 | tree fnargs = (TREE_CODE (fntype) != METHOD_TYPE) | |
0fb5ac6f MM |
4791 | ? DECL_ARGUMENTS (fndecl) |
4792 | : 0; | |
3f1f8d8c MM |
4793 | rtx next_arg_reg; |
4794 | int i; | |
0fb5ac6f MM |
4795 | tree next_arg; |
4796 | tree cur_arg; | |
0fb5ac6f MM |
4797 | CUMULATIVE_ARGS args_so_far; |
4798 | ||
518e5ce8 JW |
4799 | /* If struct value address is treated as the first argument, make it so. */ |
4800 | if (aggregate_value_p (DECL_RESULT (fndecl)) | |
4801 | && ! current_function_returns_pcc_struct | |
4802 | && struct_value_incoming_rtx == 0) | |
4803 | { | |
4804 | tree type = build_pointer_type (fntype); | |
4805 | tree function_result_decl = build_decl (PARM_DECL, NULL_TREE, type); | |
4806 | DECL_ARG_TYPE (function_result_decl) = type; | |
4807 | TREE_CHAIN (function_result_decl) = fnargs; | |
4808 | fnargs = function_result_decl; | |
4809 | } | |
4810 | ||
cee98a59 | 4811 | /* Determine the last argument, and get its name. */ |
3f1f8d8c MM |
4812 | |
4813 | INIT_CUMULATIVE_ARGS (args_so_far, fntype, (rtx)0); | |
4814 | regno = GP_ARG_FIRST; | |
4815 | ||
cee98a59 MM |
4816 | for (cur_arg = fnargs; cur_arg != (tree)0; cur_arg = next_arg) |
4817 | { | |
6f673359 JW |
4818 | tree passed_type = DECL_ARG_TYPE (cur_arg); |
4819 | enum machine_mode passed_mode = TYPE_MODE (passed_type); | |
4820 | rtx entry_parm; | |
4821 | ||
4822 | if (TYPE_NEEDS_CONSTRUCTING (passed_type)) | |
4823 | { | |
4824 | passed_type = build_pointer_type (passed_type); | |
4825 | passed_mode = Pmode; | |
4826 | } | |
4827 | ||
4828 | entry_parm = FUNCTION_ARG (args_so_far, passed_mode, passed_type, 1); | |
3f1f8d8c MM |
4829 | |
4830 | if (entry_parm) | |
4831 | { | |
4832 | int words; | |
4833 | ||
4834 | /* passed in a register, so will get homed automatically */ | |
4835 | if (GET_MODE (entry_parm) == BLKmode) | |
6f673359 | 4836 | words = (int_size_in_bytes (passed_type) + 3) / 4; |
3f1f8d8c MM |
4837 | else |
4838 | words = (GET_MODE_SIZE (GET_MODE (entry_parm)) + 3) / 4; | |
4839 | ||
4840 | regno = REGNO (entry_parm) + words - 1; | |
4841 | } | |
4842 | else | |
4843 | { | |
4844 | regno = GP_ARG_LAST+1; | |
4845 | break; | |
4846 | } | |
4847 | ||
6f673359 | 4848 | FUNCTION_ARG_ADVANCE (args_so_far, passed_mode, passed_type, 1); |
3f1f8d8c | 4849 | |
cee98a59 MM |
4850 | next_arg = TREE_CHAIN (cur_arg); |
4851 | if (next_arg == (tree)0) | |
4852 | { | |
4853 | if (DECL_NAME (cur_arg)) | |
4854 | arg_name = IDENTIFIER_POINTER (DECL_NAME (cur_arg)); | |
4855 | ||
4856 | break; | |
4857 | } | |
4858 | } | |
4859 | ||
3f1f8d8c MM |
4860 | /* In order to pass small structures by value in registers |
4861 | compatibly with the MIPS compiler, we need to shift the value | |
4862 | into the high part of the register. Function_arg has encoded a | |
4863 | PARALLEL rtx, holding a vector of adjustments to be made as the | |
4864 | next_arg_reg variable, so we split up the insns, and emit them | |
4865 | separately. */ | |
cee98a59 | 4866 | |
3f1f8d8c MM |
4867 | next_arg_reg = FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1); |
4868 | if (next_arg_reg != (rtx)0 && GET_CODE (next_arg_reg) == PARALLEL) | |
4869 | { | |
4870 | rtvec adjust = XVEC (next_arg_reg, 0); | |
4871 | int num = GET_NUM_ELEM (adjust); | |
cee98a59 | 4872 | |
3f1f8d8c | 4873 | for (i = 0; i < num; i++) |
cee98a59 | 4874 | { |
3f1f8d8c MM |
4875 | rtx pattern = RTVEC_ELT (adjust, i); |
4876 | if (GET_CODE (pattern) != SET | |
4877 | || GET_CODE (SET_SRC (pattern)) != ASHIFT) | |
4878 | abort_with_insn (pattern, "Insn is not a shift"); | |
cee98a59 | 4879 | |
3f1f8d8c MM |
4880 | PUT_CODE (SET_SRC (pattern), ASHIFTRT); |
4881 | emit_insn (pattern); | |
cee98a59 | 4882 | } |
3f1f8d8c | 4883 | } |
cee98a59 | 4884 | |
ffa9d0b1 JW |
4885 | tsize = compute_frame_size (get_frame_size ()); |
4886 | ||
3f1f8d8c MM |
4887 | /* If this function is a varargs function, store any registers that |
4888 | would normally hold arguments ($4 - $7) on the stack. */ | |
4889 | if ((TYPE_ARG_TYPES (fntype) != 0 | |
4890 | && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype))) != void_type_node)) | |
4891 | || (arg_name != (char *)0 | |
4892 | && ((arg_name[0] == '_' && strcmp (arg_name, "__builtin_va_alist") == 0) | |
4893 | || (arg_name[0] == 'v' && strcmp (arg_name, "va_alist") == 0)))) | |
4894 | { | |
ffa9d0b1 JW |
4895 | int offset = (regno - GP_ARG_FIRST) * UNITS_PER_WORD; |
4896 | rtx ptr = stack_pointer_rtx; | |
4897 | ||
4898 | /* If we are doing svr4-abi, sp has already been decremented by tsize. */ | |
4899 | if (TARGET_ABICALLS) | |
4900 | offset += tsize; | |
4901 | ||
0fb5ac6f | 4902 | for (; regno <= GP_ARG_LAST; regno++) |
cee98a59 | 4903 | { |
ffa9d0b1 JW |
4904 | if (offset != 0) |
4905 | ptr = gen_rtx (PLUS, Pmode, stack_pointer_rtx, GEN_INT (offset)); | |
147255d8 JW |
4906 | emit_move_insn (gen_rtx (MEM, word_mode, ptr), |
4907 | gen_rtx (REG, word_mode, regno)); | |
ffa9d0b1 | 4908 | offset += UNITS_PER_WORD; |
cee98a59 MM |
4909 | } |
4910 | } | |
4911 | ||
cee98a59 MM |
4912 | if (tsize > 0) |
4913 | { | |
0fb5ac6f | 4914 | rtx tsize_rtx = GEN_INT (tsize); |
cee98a59 | 4915 | |
ffa9d0b1 JW |
4916 | /* If we are doing svr4-abi, sp move is done by function_prologue. */ |
4917 | if (!TARGET_ABICALLS) | |
0fb5ac6f | 4918 | { |
ffa9d0b1 JW |
4919 | if (tsize > 32767) |
4920 | { | |
147255d8 | 4921 | tmp_rtx = gen_rtx (REG, Pmode, MIPS_TEMP1_REGNUM); |
ffa9d0b1 JW |
4922 | emit_move_insn (tmp_rtx, tsize_rtx); |
4923 | tsize_rtx = tmp_rtx; | |
4924 | } | |
cee98a59 | 4925 | |
147255d8 JW |
4926 | if (TARGET_LONG64) |
4927 | emit_insn (gen_subdi3 (stack_pointer_rtx, stack_pointer_rtx, | |
4928 | tsize_rtx)); | |
4929 | else | |
4930 | emit_insn (gen_subsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
4931 | tsize_rtx)); | |
ffa9d0b1 | 4932 | } |
cee98a59 | 4933 | |
7bea35e7 | 4934 | save_restore_insns (TRUE, tmp_rtx, tsize, (FILE *)0); |
cee98a59 | 4935 | |
0fb5ac6f | 4936 | if (frame_pointer_needed) |
147255d8 JW |
4937 | { |
4938 | if (TARGET_64BIT) | |
4939 | emit_insn (gen_movdi (frame_pointer_rtx, stack_pointer_rtx)); | |
4940 | else | |
4941 | emit_insn (gen_movsi (frame_pointer_rtx, stack_pointer_rtx)); | |
4942 | } | |
cee98a59 | 4943 | } |
d8d5b1e1 MM |
4944 | |
4945 | /* If we are profiling, make sure no instructions are scheduled before | |
4946 | the call to mcount. */ | |
4947 | ||
4948 | if (profile_flag || profile_block_flag) | |
4949 | emit_insn (gen_blockage ()); | |
cee98a59 MM |
4950 | } |
4951 | ||
4952 | \f | |
4953 | /* Do any necessary cleanup after a function to restore stack, frame, and regs. */ | |
4954 | ||
b5e9dd03 | 4955 | #define RA_MASK ((long) 0x80000000) /* 1 << 31 */ |
4d889da9 | 4956 | #define PIC_OFFSET_TABLE_MASK (1 << (PIC_OFFSET_TABLE_REGNUM - GP_REG_FIRST)) |
b5e9dd03 | 4957 | |
cee98a59 MM |
4958 | void |
4959 | function_epilogue (file, size) | |
4960 | FILE *file; | |
4961 | int size; | |
4962 | { | |
7bea35e7 | 4963 | long tsize; |
cee98a59 MM |
4964 | char *sp_str = reg_names[STACK_POINTER_REGNUM]; |
4965 | char *t1_str = reg_names[MIPS_TEMP1_REGNUM]; | |
4966 | rtx epilogue_delay = current_function_epilogue_delay_list; | |
85098019 | 4967 | int noreorder = (epilogue_delay != 0); |
cee98a59 MM |
4968 | int noepilogue = FALSE; |
4969 | int load_nop = FALSE; | |
4970 | int load_only_r31; | |
7bea35e7 MM |
4971 | rtx tmp_rtx = (rtx)0; |
4972 | rtx restore_rtx; | |
4973 | int i; | |
cee98a59 MM |
4974 | |
4975 | /* The epilogue does not depend on any registers, but the stack | |
4976 | registers, so we assume that if we have 1 pending nop, it can be | |
4977 | ignored, and 2 it must be filled (2 nops occur for integer | |
4978 | multiply and divide). */ | |
4979 | ||
4980 | if (dslots_number_nops > 0) | |
4981 | { | |
4982 | if (dslots_number_nops == 1) | |
4983 | { | |
4984 | dslots_number_nops = 0; | |
4985 | dslots_load_filled++; | |
4986 | } | |
4987 | else | |
4988 | { | |
4989 | while (--dslots_number_nops > 0) | |
85098019 | 4990 | fputs ("\t#nop\n", asm_out_file); |
cee98a59 | 4991 | } |
cee98a59 MM |
4992 | } |
4993 | ||
4994 | if (set_noat != 0) | |
4995 | { | |
4996 | set_noat = 0; | |
4997 | fputs ("\t.set\tat\n", file); | |
4998 | error ("internal gcc error: .set noat left on in epilogue"); | |
4999 | } | |
5000 | ||
5001 | if (set_nomacro != 0) | |
5002 | { | |
5003 | set_nomacro = 0; | |
5004 | fputs ("\t.set\tmacro\n", file); | |
5005 | error ("internal gcc error: .set nomacro left on in epilogue"); | |
5006 | } | |
5007 | ||
5008 | if (set_noreorder != 0) | |
5009 | { | |
5010 | set_noreorder = 0; | |
5011 | fputs ("\t.set\treorder\n", file); | |
5012 | error ("internal gcc error: .set noreorder left on in epilogue"); | |
5013 | } | |
5014 | ||
5015 | if (set_volatile != 0) | |
5016 | { | |
5017 | set_volatile = 0; | |
147255d8 | 5018 | fprintf (file, "\t%s.set\tnovolatile\n", (TARGET_MIPS_AS) ? "" : "#"); |
cee98a59 MM |
5019 | error ("internal gcc error: .set volatile left on in epilogue"); |
5020 | } | |
5021 | ||
5022 | size = MIPS_STACK_ALIGN (size); | |
5023 | tsize = (!current_frame_info.initialized) | |
5024 | ? compute_frame_size (size) | |
5025 | : current_frame_info.total_size; | |
5026 | ||
5027 | if (tsize == 0 && epilogue_delay == 0) | |
5028 | { | |
5029 | rtx insn = get_last_insn (); | |
5030 | ||
5031 | /* If the last insn was a BARRIER, we don't have to write any code | |
5032 | because a jump (aka return) was put there. */ | |
5033 | if (GET_CODE (insn) == NOTE) | |
5034 | insn = prev_nonnote_insn (insn); | |
5035 | if (insn && GET_CODE (insn) == BARRIER) | |
5036 | noepilogue = TRUE; | |
5037 | ||
5038 | noreorder = FALSE; | |
5039 | } | |
5040 | ||
5041 | if (!noepilogue) | |
5042 | { | |
5043 | /* In the reload sequence, we don't need to fill the load delay | |
5044 | slots for most of the loads, also see if we can fill the final | |
5045 | delay slot if not otherwise filled by the reload sequence. */ | |
5046 | ||
5047 | if (noreorder) | |
5048 | fprintf (file, "\t.set\tnoreorder\n"); | |
5049 | ||
5050 | if (tsize > 32767) | |
7bea35e7 MM |
5051 | { |
5052 | fprintf (file, "\tli\t%s,0x%.08lx\t# %ld\n", t1_str, (long)tsize, (long)tsize); | |
5053 | tmp_rtx = gen_rtx (REG, Pmode, MIPS_TEMP1_REGNUM); | |
5054 | } | |
cee98a59 MM |
5055 | |
5056 | if (frame_pointer_needed) | |
ab78d4a8 MM |
5057 | fprintf (file, "\tmove\t%s,%s\t\t\t# sp not trusted here\n", |
5058 | sp_str, reg_names[FRAME_POINTER_REGNUM]); | |
cee98a59 | 5059 | |
7bea35e7 | 5060 | save_restore_insns (FALSE, tmp_rtx, tsize, file); |
cee98a59 | 5061 | |
4d889da9 RS |
5062 | load_only_r31 = (((current_frame_info.mask |
5063 | & ~ (TARGET_ABICALLS ? PIC_OFFSET_TABLE_MASK : 0)) | |
5064 | == RA_MASK) | |
cee98a59 MM |
5065 | && current_frame_info.fmask == 0); |
5066 | ||
5067 | if (noreorder) | |
5068 | { | |
5069 | /* If the only register saved is the return address, we need a | |
5070 | nop, unless we have an instruction to put into it. Otherwise | |
5071 | we don't since reloading multiple registers doesn't reference | |
5072 | the register being loaded. */ | |
5073 | ||
5074 | if (load_only_r31) | |
5075 | { | |
5076 | if (epilogue_delay) | |
5077 | final_scan_insn (XEXP (epilogue_delay, 0), | |
5078 | file, | |
5079 | 1, /* optimize */ | |
5080 | -2, /* prescan */ | |
5081 | 1); /* nopeepholes */ | |
5082 | else | |
5083 | { | |
5084 | fprintf (file, "\tnop\n"); | |
5085 | load_nop = TRUE; | |
5086 | } | |
5087 | } | |
5088 | ||
5089 | fprintf (file, "\tj\t%s\n", reg_names[GP_REG_FIRST + 31]); | |
5090 | ||
5091 | if (tsize > 32767) | |
147255d8 JW |
5092 | fprintf (file, "\t%s\t%s,%s,%s\n", |
5093 | TARGET_LONG64 ? "daddu" : "addu", | |
5094 | sp_str, sp_str, t1_str); | |
cee98a59 MM |
5095 | |
5096 | else if (tsize > 0) | |
147255d8 JW |
5097 | fprintf (file, "\t%s\t%s,%s,%d\n", |
5098 | TARGET_LONG64 ? "daddu" : "addu", | |
5099 | sp_str, sp_str, tsize); | |
cee98a59 MM |
5100 | |
5101 | else if (!load_only_r31 && epilogue_delay != 0) | |
5102 | final_scan_insn (XEXP (epilogue_delay, 0), | |
5103 | file, | |
5104 | 1, /* optimize */ | |
5105 | -2, /* prescan */ | |
5106 | 1); /* nopeepholes */ | |
5107 | ||
5108 | fprintf (file, "\t.set\treorder\n"); | |
5109 | } | |
5110 | ||
5111 | else | |
5112 | { | |
5113 | if (tsize > 32767) | |
147255d8 JW |
5114 | fprintf (file, "\t%s\t%s,%s,%s\n", |
5115 | TARGET_LONG64 ? "daddu" : "addu", | |
5116 | sp_str, sp_str, t1_str); | |
cee98a59 MM |
5117 | |
5118 | else if (tsize > 0) | |
147255d8 JW |
5119 | fprintf (file, "\t%s\t%s,%s,%d\n", |
5120 | TARGET_LONG64 ? "daddu" : "addu", | |
5121 | sp_str, sp_str, tsize); | |
cee98a59 MM |
5122 | |
5123 | fprintf (file, "\tj\t%s\n", reg_names[GP_REG_FIRST + 31]); | |
5124 | } | |
5125 | } | |
5126 | ||
5127 | fputs ("\t.end\t", file); | |
5128 | assemble_name (file, current_function_name); | |
5129 | fputs ("\n", file); | |
5130 | ||
5131 | if (TARGET_STATS) | |
5132 | { | |
5133 | int num_gp_regs = current_frame_info.gp_reg_size / 4; | |
5134 | int num_fp_regs = current_frame_info.fp_reg_size / 8; | |
5135 | int num_regs = num_gp_regs + num_fp_regs; | |
ab78d4a8 MM |
5136 | char *name = current_function_name; |
5137 | ||
5138 | if (name[0] == '*') | |
5139 | name++; | |
cee98a59 MM |
5140 | |
5141 | dslots_load_total += num_regs; | |
5142 | ||
5143 | if (!noepilogue) | |
5144 | dslots_jump_total++; | |
5145 | ||
5146 | if (noreorder) | |
5147 | { | |
5148 | dslots_load_filled += num_regs; | |
5149 | ||
5150 | /* If the only register saved is the return register, we | |
5151 | can't fill this register's delay slot. */ | |
5152 | ||
5153 | if (load_only_r31 && epilogue_delay == 0) | |
5154 | dslots_load_filled--; | |
5155 | ||
5156 | if (tsize > 0 || (!load_only_r31 && epilogue_delay != 0)) | |
5157 | dslots_jump_filled++; | |
5158 | } | |
5159 | ||
5160 | fprintf (stderr, | |
ddd8ab48 | 5161 | "%-20s fp=%c leaf=%c alloca=%c setjmp=%c stack=%4ld arg=%3ld reg=%2d/%d delay=%3d/%3dL %3d/%3dJ refs=%3d/%3d/%3d", |
ab78d4a8 | 5162 | name, |
cee98a59 | 5163 | (frame_pointer_needed) ? 'y' : 'n', |
b5e9dd03 | 5164 | ((current_frame_info.mask & RA_MASK) != 0) ? 'n' : 'y', |
cee98a59 MM |
5165 | (current_function_calls_alloca) ? 'y' : 'n', |
5166 | (current_function_calls_setjmp) ? 'y' : 'n', | |
5167 | (long)current_frame_info.total_size, | |
5168 | (long)current_function_outgoing_args_size, | |
5169 | num_gp_regs, num_fp_regs, | |
5170 | dslots_load_total, dslots_load_filled, | |
5171 | dslots_jump_total, dslots_jump_filled, | |
5172 | num_refs[0], num_refs[1], num_refs[2]); | |
ddd8ab48 | 5173 | |
6f3c667f MM |
5174 | if (HALF_PIC_NUMBER_PTRS > prev_half_pic_ptrs) |
5175 | { | |
5176 | fprintf (stderr, " half-pic=%3d", HALF_PIC_NUMBER_PTRS - prev_half_pic_ptrs); | |
5177 | prev_half_pic_ptrs = HALF_PIC_NUMBER_PTRS; | |
5178 | } | |
ddd8ab48 | 5179 | |
6f3c667f MM |
5180 | if (HALF_PIC_NUMBER_REFS > prev_half_pic_refs) |
5181 | { | |
5182 | fprintf (stderr, " pic-ref=%3d", HALF_PIC_NUMBER_REFS - prev_half_pic_refs); | |
5183 | prev_half_pic_refs = HALF_PIC_NUMBER_REFS; | |
5184 | } | |
ddd8ab48 MM |
5185 | |
5186 | fputc ('\n', stderr); | |
cee98a59 MM |
5187 | } |
5188 | ||
5189 | /* Reset state info for each function. */ | |
5190 | inside_function = FALSE; | |
5191 | ignore_line_number = FALSE; | |
5192 | dslots_load_total = 0; | |
5193 | dslots_jump_total = 0; | |
5194 | dslots_load_filled = 0; | |
5195 | dslots_jump_filled = 0; | |
5196 | num_refs[0] = 0; | |
5197 | num_refs[1] = 0; | |
5198 | num_refs[2] = 0; | |
5199 | mips_load_reg = (rtx)0; | |
5200 | mips_load_reg2 = (rtx)0; | |
cee98a59 MM |
5201 | current_frame_info = zero_frame_info; |
5202 | ||
5203 | /* Restore the output file if optimizing the GP (optimizing the GP causes | |
5204 | the text to be diverted to a tempfile, so that data decls come before | |
5205 | references to the data). */ | |
5206 | ||
5207 | if (TARGET_GP_OPT) | |
5208 | asm_out_file = asm_out_data_file; | |
5209 | } | |
5210 | ||
0fb5ac6f MM |
5211 | \f |
5212 | /* Expand the epilogue into a bunch of separate insns. */ | |
5213 | ||
5214 | void | |
5215 | mips_expand_epilogue () | |
5216 | { | |
7bea35e7 | 5217 | long tsize = current_frame_info.total_size; |
0fb5ac6f | 5218 | rtx tsize_rtx = GEN_INT (tsize); |
7bea35e7 | 5219 | rtx tmp_rtx = (rtx)0; |
0fb5ac6f MM |
5220 | |
5221 | if (tsize > 32767) | |
5222 | { | |
147255d8 | 5223 | tmp_rtx = gen_rtx (REG, Pmode, MIPS_TEMP1_REGNUM); |
0fb5ac6f MM |
5224 | emit_move_insn (tmp_rtx, tsize_rtx); |
5225 | tsize_rtx = tmp_rtx; | |
5226 | } | |
5227 | ||
5228 | if (tsize > 0) | |
5229 | { | |
5230 | if (frame_pointer_needed) | |
147255d8 JW |
5231 | { |
5232 | if (TARGET_LONG64) | |
5233 | emit_insn (gen_movdi (stack_pointer_rtx, frame_pointer_rtx)); | |
5234 | else | |
5235 | emit_insn (gen_movsi (stack_pointer_rtx, frame_pointer_rtx)); | |
5236 | } | |
0fb5ac6f | 5237 | |
7bea35e7 | 5238 | save_restore_insns (FALSE, tmp_rtx, tsize, (FILE *)0); |
0fb5ac6f | 5239 | |
147255d8 JW |
5240 | if (TARGET_LONG64) |
5241 | emit_insn (gen_adddi3 (stack_pointer_rtx, stack_pointer_rtx, | |
5242 | tsize_rtx)); | |
5243 | else | |
5244 | emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
5245 | tsize_rtx)); | |
0fb5ac6f MM |
5246 | } |
5247 | ||
5248 | emit_jump_insn (gen_return_internal (gen_rtx (REG, Pmode, GP_REG_FIRST+31))); | |
5249 | } | |
5250 | ||
cee98a59 MM |
5251 | \f |
5252 | /* Define the number of delay slots needed for the function epilogue. | |
5253 | ||
5254 | On the mips, we need a slot if either no stack has been allocated, | |
5255 | or the only register saved is the return register. */ | |
5256 | ||
5257 | int | |
5258 | mips_epilogue_delay_slots () | |
5259 | { | |
5260 | if (!current_frame_info.initialized) | |
5261 | (void) compute_frame_size (get_frame_size ()); | |
5262 | ||
5263 | if (current_frame_info.total_size == 0) | |
5264 | return 1; | |
5265 | ||
b5e9dd03 | 5266 | if (current_frame_info.mask == RA_MASK && current_frame_info.fmask == 0) |
cee98a59 MM |
5267 | return 1; |
5268 | ||
5269 | return 0; | |
5270 | } | |
5271 | ||
5272 | \f | |
5273 | /* Return true if this function is known to have a null epilogue. | |
5274 | This allows the optimizer to omit jumps to jumps if no stack | |
5275 | was created. */ | |
5276 | ||
5277 | int | |
0fb5ac6f | 5278 | simple_epilogue_p () |
cee98a59 MM |
5279 | { |
5280 | if (!reload_completed) | |
5281 | return 0; | |
5282 | ||
5283 | if (current_frame_info.initialized) | |
5284 | return current_frame_info.total_size == 0; | |
5285 | ||
5286 | return (compute_frame_size (get_frame_size ())) == 0; | |
5287 | } | |
9753d4e4 JW |
5288 | \f |
5289 | /* Choose the section to use for the constant rtx expression X that has | |
5290 | mode MODE. */ | |
5291 | ||
5292 | mips_select_rtx_section (mode, x) | |
5293 | enum machine_mode mode; | |
5294 | rtx x; | |
5295 | { | |
5296 | if (TARGET_EMBEDDED_DATA) | |
5297 | { | |
5298 | /* For embedded applications, always put constants in read-only data, | |
5299 | in order to reduce RAM usage. */ | |
5300 | rdata_section (); | |
5301 | } | |
5302 | else | |
5303 | { | |
5304 | /* For hosted applications, always put constants in small data if | |
5305 | possible, as this gives the best performance. */ | |
5306 | ||
5307 | if (GET_MODE_SIZE (mode) <= mips_section_threshold | |
5308 | && mips_section_threshold > 0) | |
5309 | sdata_section (); | |
5310 | else | |
5311 | rdata_section (); | |
5312 | } | |
5313 | } | |
5314 | ||
5315 | /* Choose the section to use for DECL. RELOC is true if its value contains | |
5316 | any relocatable expression. */ | |
5317 | ||
5318 | mips_select_section (decl, reloc) | |
5319 | tree decl; | |
5320 | int reloc; | |
5321 | { | |
5322 | int size = int_size_in_bytes (TREE_TYPE (decl)); | |
5323 | ||
92544bdf ILT |
5324 | if (TARGET_EMBEDDED_PIC |
5325 | && TREE_CODE (decl) == STRING_CST | |
5326 | && !flag_writable_strings) | |
5327 | { | |
5328 | /* For embedded position independent code, put constant strings | |
5329 | in the text section, because the data section is limited to | |
5330 | 64K in size. */ | |
5331 | ||
5332 | text_section (); | |
5333 | } | |
5334 | else if (TARGET_EMBEDDED_DATA) | |
9753d4e4 JW |
5335 | { |
5336 | /* For embedded applications, always put an object in read-only data | |
5337 | if possible, in order to reduce RAM usage. */ | |
5338 | ||
5339 | if (((TREE_READONLY (decl) && !TREE_SIDE_EFFECTS (decl) | |
5340 | && DECL_INITIAL (decl) | |
5341 | && (DECL_INITIAL (decl) == error_mark_node | |
5342 | || TREE_CONSTANT (DECL_INITIAL (decl)))) | |
5343 | /* Deal with calls from output_constant_def_contents. */ | |
5344 | || (TREE_CODE (decl) != VAR_DECL | |
5345 | && (TREE_CODE (decl) != STRING_CST | |
5346 | || !flag_writable_strings))) | |
5347 | && ! (flag_pic && reloc)) | |
5348 | rdata_section (); | |
5349 | else if (size > 0 && size <= mips_section_threshold) | |
5350 | sdata_section (); | |
5351 | else | |
5352 | data_section (); | |
5353 | } | |
5354 | else | |
5355 | { | |
5356 | /* For hosted applications, always put an object in small data if | |
5357 | possible, as this gives the best performance. */ | |
5358 | ||
5359 | if (size > 0 && size <= mips_section_threshold) | |
5360 | sdata_section (); | |
5361 | else if (((TREE_READONLY (decl) && !TREE_SIDE_EFFECTS (decl) | |
5362 | && DECL_INITIAL (decl) | |
5363 | && (DECL_INITIAL (decl) == error_mark_node | |
5364 | || TREE_CONSTANT (DECL_INITIAL (decl)))) | |
5365 | /* Deal with calls from output_constant_def_contents. */ | |
5366 | || (TREE_CODE (decl) != VAR_DECL | |
5367 | && (TREE_CODE (decl) != STRING_CST | |
5368 | || !flag_writable_strings))) | |
5369 | && ! (flag_pic && reloc)) | |
5370 | rdata_section (); | |
5371 | else | |
5372 | data_section (); | |
5373 | } | |
5374 | } |