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9878760c | 1 | /* Subroutines used for code generation on IBM RS/6000. |
a7653a2c | 2 | Copyright (C) 1991, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. |
fab3bcc3 | 3 | Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) |
9878760c RK |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
c15c9075 RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
9878760c RK |
21 | |
22 | #include <stdio.h> | |
127b0efc | 23 | #include <ctype.h> |
9878760c RK |
24 | #include "config.h" |
25 | #include "rtl.h" | |
26 | #include "regs.h" | |
27 | #include "hard-reg-set.h" | |
28 | #include "real.h" | |
29 | #include "insn-config.h" | |
30 | #include "conditions.h" | |
31 | #include "insn-flags.h" | |
32 | #include "output.h" | |
33 | #include "insn-attr.h" | |
34 | #include "flags.h" | |
35 | #include "recog.h" | |
36 | #include "expr.h" | |
37 | #include "obstack.h" | |
9b30bae2 | 38 | #include "tree.h" |
2a430ec1 | 39 | #include "except.h" |
a7df97e6 | 40 | #include "function.h" |
9b30bae2 | 41 | |
7509c759 MM |
42 | #ifndef TARGET_NO_PROTOTYPE |
43 | #define TARGET_NO_PROTOTYPE 0 | |
44 | #endif | |
45 | ||
9b30bae2 | 46 | extern char *language_string; |
5248c961 | 47 | extern int profile_block_flag; |
9878760c RK |
48 | |
49 | #define min(A,B) ((A) < (B) ? (A) : (B)) | |
50 | #define max(A,B) ((A) > (B) ? (A) : (B)) | |
51 | ||
5248c961 RK |
52 | /* Target cpu type */ |
53 | ||
54 | enum processor_type rs6000_cpu; | |
8e3f41e7 MM |
55 | struct rs6000_cpu_select rs6000_select[3] = |
56 | { | |
57 | /* switch name, tune arch */ | |
5d6426e0 | 58 | { (char *)0, "--with-cpu=", 1, 1 }, |
8e3f41e7 MM |
59 | { (char *)0, "-mcpu=", 1, 1 }, |
60 | { (char *)0, "-mtune=", 1, 0 }, | |
61 | }; | |
5248c961 | 62 | |
9878760c RK |
63 | /* Set to non-zero by "fix" operation to indicate that itrunc and |
64 | uitrunc must be defined. */ | |
65 | ||
66 | int rs6000_trunc_used; | |
67 | ||
68 | /* Set to non-zero once they have been defined. */ | |
69 | ||
70 | static int trunc_defined; | |
71 | ||
c764f757 RK |
72 | /* Set to non-zero once AIX common-mode calls have been defined. */ |
73 | static int common_mode_defined; | |
c81bebd7 | 74 | |
9878760c RK |
75 | /* Save information from a "cmpxx" operation until the branch or scc is |
76 | emitted. */ | |
9878760c RK |
77 | rtx rs6000_compare_op0, rs6000_compare_op1; |
78 | int rs6000_compare_fp_p; | |
874a0744 MM |
79 | |
80 | #ifdef USING_SVR4_H | |
81 | /* Label number of label created for -mrelocatable, to call to so we can | |
82 | get the address of the GOT section */ | |
83 | int rs6000_pic_labelno; | |
c81bebd7 MM |
84 | |
85 | /* Which abi to adhere to */ | |
86 | char *rs6000_abi_name = RS6000_ABI_NAME; | |
d9407988 MM |
87 | |
88 | /* Semantics of the small data area */ | |
89 | enum rs6000_sdata_type rs6000_sdata = SDATA_DATA; | |
90 | ||
91 | /* Which small data model to use */ | |
92 | char *rs6000_sdata_name = (char *)0; | |
874a0744 | 93 | #endif |
4697a36c MM |
94 | |
95 | /* Whether a System V.4 varargs area was created. */ | |
96 | int rs6000_sysv_varargs_p; | |
8f75773e | 97 | |
b6c9286a MM |
98 | /* ABI enumeration available for subtarget to use. */ |
99 | enum rs6000_abi rs6000_current_abi; | |
100 | ||
802a0058 MM |
101 | /* Offset & size for fpmem stack locations used for converting between |
102 | float and integral types. */ | |
103 | int rs6000_fpmem_offset; | |
104 | int rs6000_fpmem_size; | |
105 | ||
c81bebd7 MM |
106 | \f |
107 | /* Default register names. */ | |
108 | char rs6000_reg_names[][8] = | |
109 | { | |
802a0058 MM |
110 | "0", "1", "2", "3", "4", "5", "6", "7", |
111 | "8", "9", "10", "11", "12", "13", "14", "15", | |
112 | "16", "17", "18", "19", "20", "21", "22", "23", | |
113 | "24", "25", "26", "27", "28", "29", "30", "31", | |
114 | "0", "1", "2", "3", "4", "5", "6", "7", | |
115 | "8", "9", "10", "11", "12", "13", "14", "15", | |
116 | "16", "17", "18", "19", "20", "21", "22", "23", | |
117 | "24", "25", "26", "27", "28", "29", "30", "31", | |
118 | "mq", "lr", "ctr","ap", | |
119 | "0", "1", "2", "3", "4", "5", "6", "7", | |
120 | "fpmem" | |
c81bebd7 MM |
121 | }; |
122 | ||
123 | #ifdef TARGET_REGNAMES | |
124 | static char alt_reg_names[][8] = | |
125 | { | |
802a0058 MM |
126 | "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", |
127 | "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", | |
128 | "%r16", "%r17", "%r18", "%r19", "%r20", "%r21", "%r22", "%r23", | |
129 | "%r24", "%r25", "%r26", "%r27", "%r28", "%r29", "%r30", "%r31", | |
130 | "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7", | |
131 | "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15", | |
132 | "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23", | |
133 | "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31", | |
134 | "mq", "lr", "ctr", "ap", | |
135 | "%cr0", "%cr1", "%cr2", "%cr3", "%cr4", "%cr5", "%cr6", "%cr7", | |
136 | "fpmem" | |
c81bebd7 MM |
137 | }; |
138 | #endif | |
9878760c | 139 | \f |
5248c961 RK |
140 | /* Override command line options. Mostly we process the processor |
141 | type and sometimes adjust other TARGET_ options. */ | |
142 | ||
143 | void | |
8e3f41e7 MM |
144 | rs6000_override_options (default_cpu) |
145 | char *default_cpu; | |
5248c961 | 146 | { |
8e3f41e7 MM |
147 | int i, j; |
148 | struct rs6000_cpu_select *ptr; | |
5248c961 | 149 | |
85638c0d RK |
150 | /* Simplify the entries below by making a mask for any POWER |
151 | variant and any PowerPC variant. */ | |
152 | ||
938937d8 | 153 | #define POWER_MASKS (MASK_POWER | MASK_POWER2 | MASK_MULTIPLE | MASK_STRING) |
68c49ffa RK |
154 | #define POWERPC_MASKS (MASK_POWERPC | MASK_PPC_GPOPT \ |
155 | | MASK_PPC_GFXOPT | MASK_POWERPC64) | |
156 | #define POWERPC_OPT_MASKS (MASK_PPC_GPOPT | MASK_PPC_GFXOPT) | |
85638c0d | 157 | |
5248c961 RK |
158 | static struct ptt |
159 | { | |
160 | char *name; /* Canonical processor name. */ | |
161 | enum processor_type processor; /* Processor type enum value. */ | |
162 | int target_enable; /* Target flags to enable. */ | |
163 | int target_disable; /* Target flags to disable. */ | |
164 | } processor_target_table[] | |
cf27b467 MM |
165 | = {{"common", PROCESSOR_COMMON, MASK_NEW_MNEMONICS, |
166 | POWER_MASKS | POWERPC_MASKS}, | |
db7f1e43 | 167 | {"power", PROCESSOR_POWER, |
938937d8 | 168 | MASK_POWER | MASK_MULTIPLE | MASK_STRING, |
db7f1e43 | 169 | MASK_POWER2 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, |
8e3f41e7 MM |
170 | {"power2", PROCESSOR_POWER, |
171 | MASK_POWER | MASK_POWER2 | MASK_MULTIPLE | MASK_STRING, | |
172 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, | |
db7f1e43 RK |
173 | {"powerpc", PROCESSOR_POWERPC, |
174 | MASK_POWERPC | MASK_NEW_MNEMONICS, | |
68c49ffa | 175 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}, |
db7f1e43 | 176 | {"rios", PROCESSOR_RIOS1, |
938937d8 | 177 | MASK_POWER | MASK_MULTIPLE | MASK_STRING, |
db7f1e43 RK |
178 | MASK_POWER2 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, |
179 | {"rios1", PROCESSOR_RIOS1, | |
938937d8 | 180 | MASK_POWER | MASK_MULTIPLE | MASK_STRING, |
db7f1e43 RK |
181 | MASK_POWER2 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, |
182 | {"rsc", PROCESSOR_PPC601, | |
938937d8 | 183 | MASK_POWER | MASK_MULTIPLE | MASK_STRING, |
db7f1e43 RK |
184 | MASK_POWER2 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, |
185 | {"rsc1", PROCESSOR_PPC601, | |
938937d8 | 186 | MASK_POWER | MASK_MULTIPLE | MASK_STRING, |
db7f1e43 RK |
187 | MASK_POWER2 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, |
188 | {"rios2", PROCESSOR_RIOS2, | |
938937d8 | 189 | MASK_POWER | MASK_MULTIPLE | MASK_STRING | MASK_POWER2, |
db7f1e43 | 190 | POWERPC_MASKS | MASK_NEW_MNEMONICS}, |
49a0b204 MM |
191 | {"403", PROCESSOR_PPC403, |
192 | MASK_POWERPC | MASK_SOFT_FLOAT | MASK_NEW_MNEMONICS, | |
193 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}, | |
cf27b467 MM |
194 | {"505", PROCESSOR_MPCCORE, |
195 | MASK_POWERPC | MASK_NEW_MNEMONICS, | |
196 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}, | |
5248c961 | 197 | {"601", PROCESSOR_PPC601, |
938937d8 | 198 | MASK_POWER | MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_MULTIPLE | MASK_STRING, |
68c49ffa | 199 | MASK_POWER2 | POWERPC_OPT_MASKS | MASK_POWERPC64}, |
1ec26da6 | 200 | {"602", PROCESSOR_PPC603, |
cf27b467 MM |
201 | MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS, |
202 | POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}, | |
5248c961 | 203 | {"603", PROCESSOR_PPC603, |
68c49ffa RK |
204 | MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS, |
205 | POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}, | |
b6c9286a MM |
206 | {"603e", PROCESSOR_PPC603, |
207 | MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS, | |
208 | POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}, | |
5248c961 | 209 | {"604", PROCESSOR_PPC604, |
b6c9286a MM |
210 | MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS, |
211 | POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}, | |
07e6159a MM |
212 | {"604e", PROCESSOR_PPC604, |
213 | MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS, | |
214 | POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}, | |
b6c9286a | 215 | {"620", PROCESSOR_PPC620, |
68c49ffa | 216 | MASK_POWERPC | MASK_PPC_GFXOPT | MASK_NEW_MNEMONICS, |
cf27b467 | 217 | POWER_MASKS | MASK_PPC_GPOPT | MASK_POWERPC64}, |
07e6159a MM |
218 | {"801", PROCESSOR_MPCCORE, |
219 | MASK_POWERPC | MASK_SOFT_FLOAT | MASK_NEW_MNEMONICS, | |
220 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}, | |
cf27b467 MM |
221 | {"821", PROCESSOR_MPCCORE, |
222 | MASK_POWERPC | MASK_SOFT_FLOAT | MASK_NEW_MNEMONICS, | |
223 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}, | |
07e6159a MM |
224 | {"823", PROCESSOR_MPCCORE, |
225 | MASK_POWERPC | MASK_SOFT_FLOAT | MASK_NEW_MNEMONICS, | |
226 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}, | |
cf27b467 MM |
227 | {"860", PROCESSOR_MPCCORE, |
228 | MASK_POWERPC | MASK_SOFT_FLOAT | MASK_NEW_MNEMONICS, | |
229 | POWER_MASKS | POWERPC_OPT_MASKS | MASK_POWERPC64}}; | |
5248c961 RK |
230 | |
231 | int ptt_size = sizeof (processor_target_table) / sizeof (struct ptt); | |
232 | ||
8a61d227 | 233 | int multiple = TARGET_MULTIPLE; /* save current -mmultiple/-mno-multiple status */ |
938937d8 | 234 | int string = TARGET_STRING; /* save current -mstring/-mno-string status */ |
8a61d227 | 235 | |
5248c961 RK |
236 | profile_block_flag = 0; |
237 | ||
238 | /* Identify the processor type */ | |
8e3f41e7 MM |
239 | rs6000_select[0].string = default_cpu; |
240 | rs6000_cpu = PROCESSOR_DEFAULT; | |
8e3f41e7 MM |
241 | |
242 | for (i = 0; i < sizeof (rs6000_select) / sizeof (rs6000_select[0]); i++) | |
5248c961 | 243 | { |
8e3f41e7 MM |
244 | ptr = &rs6000_select[i]; |
245 | if (ptr->string != (char *)0 && ptr->string[0] != '\0') | |
5248c961 | 246 | { |
8e3f41e7 MM |
247 | for (j = 0; j < ptt_size; j++) |
248 | if (! strcmp (ptr->string, processor_target_table[j].name)) | |
249 | { | |
250 | if (ptr->set_tune_p) | |
251 | rs6000_cpu = processor_target_table[j].processor; | |
252 | ||
253 | if (ptr->set_arch_p) | |
254 | { | |
255 | target_flags |= processor_target_table[j].target_enable; | |
256 | target_flags &= ~processor_target_table[j].target_disable; | |
257 | } | |
258 | break; | |
259 | } | |
260 | ||
261 | if (i == ptt_size) | |
262 | error ("bad value (%s) for %s switch", ptr->string, ptr->name); | |
5248c961 RK |
263 | } |
264 | } | |
8a61d227 MM |
265 | |
266 | /* If -mmultiple or -mno-multiple was explicitly used, don't | |
267 | override with the processor default */ | |
268 | if (TARGET_MULTIPLE_SET) | |
269 | target_flags = (target_flags & ~MASK_MULTIPLE) | multiple; | |
7e69e155 | 270 | |
938937d8 MM |
271 | /* If -mstring or -mno-string was explicitly used, don't |
272 | override with the processor default */ | |
273 | if (TARGET_STRING_SET) | |
1f5515bf | 274 | target_flags = (target_flags & ~MASK_STRING) | string; |
938937d8 | 275 | |
7e69e155 MM |
276 | /* Don't allow -mmultiple or -mstring on little endian systems, because the |
277 | hardware doesn't support the instructions used in little endian mode */ | |
278 | if (!BYTES_BIG_ENDIAN) | |
279 | { | |
280 | if (TARGET_MULTIPLE) | |
281 | { | |
282 | target_flags &= ~MASK_MULTIPLE; | |
283 | if (TARGET_MULTIPLE_SET) | |
284 | warning ("-mmultiple is not supported on little endian systems"); | |
285 | } | |
286 | ||
287 | if (TARGET_STRING) | |
288 | { | |
289 | target_flags &= ~MASK_STRING; | |
938937d8 MM |
290 | if (TARGET_STRING_SET) |
291 | warning ("-mstring is not supported on little endian systems"); | |
7e69e155 MM |
292 | } |
293 | } | |
3933e0e1 | 294 | |
c81bebd7 MM |
295 | #ifdef TARGET_REGNAMES |
296 | /* If the user desires alternate register names, copy in the alternate names | |
297 | now. */ | |
298 | if (TARGET_REGNAMES) | |
299 | bcopy ((char *)alt_reg_names, (char *)rs6000_reg_names, sizeof (rs6000_reg_names)); | |
300 | #endif | |
301 | ||
3933e0e1 MM |
302 | #ifdef SUBTARGET_OVERRIDE_OPTIONS |
303 | SUBTARGET_OVERRIDE_OPTIONS; | |
304 | #endif | |
5248c961 | 305 | } |
3cfa4909 MM |
306 | \f |
307 | /* Do anything needed at the start of the asm file. */ | |
308 | ||
309 | void | |
310 | rs6000_file_start (file, default_cpu) | |
311 | FILE *file; | |
312 | char *default_cpu; | |
313 | { | |
314 | int i; | |
315 | char buffer[80]; | |
316 | char *start = buffer; | |
317 | struct rs6000_cpu_select *ptr; | |
318 | ||
319 | if (flag_verbose_asm) | |
320 | { | |
321 | sprintf (buffer, "\n%s rs6000/powerpc options:", ASM_COMMENT_START); | |
322 | rs6000_select[0].string = default_cpu; | |
323 | ||
324 | for (i = 0; i < sizeof (rs6000_select) / sizeof (rs6000_select[0]); i++) | |
325 | { | |
326 | ptr = &rs6000_select[i]; | |
327 | if (ptr->string != (char *)0 && ptr->string[0] != '\0') | |
328 | { | |
329 | fprintf (file, "%s %s%s", start, ptr->name, ptr->string); | |
330 | start = ""; | |
331 | } | |
332 | } | |
333 | ||
334 | #ifdef USING_SVR4_H | |
335 | switch (rs6000_sdata) | |
336 | { | |
337 | case SDATA_NONE: fprintf (file, "%s -msdata=none", start); start = ""; break; | |
338 | case SDATA_DATA: fprintf (file, "%s -msdata=data", start); start = ""; break; | |
339 | case SDATA_SYSV: fprintf (file, "%s -msdata=sysv", start); start = ""; break; | |
340 | case SDATA_EABI: fprintf (file, "%s -msdata=eabi", start); start = ""; break; | |
341 | } | |
342 | ||
343 | if (rs6000_sdata && g_switch_value) | |
344 | { | |
345 | fprintf (file, "%s -G %d", start, g_switch_value); | |
346 | start = ""; | |
347 | } | |
348 | #endif | |
349 | ||
350 | if (*start == '\0') | |
351 | fputs ("\n", file); | |
352 | } | |
353 | } | |
354 | ||
24d304eb RK |
355 | \f |
356 | /* Create a CONST_DOUBLE from a string. */ | |
357 | ||
358 | struct rtx_def * | |
359 | rs6000_float_const (string, mode) | |
360 | char *string; | |
361 | enum machine_mode mode; | |
362 | { | |
363 | REAL_VALUE_TYPE value = REAL_VALUE_ATOF (string, mode); | |
364 | return immed_real_const_1 (value, mode); | |
365 | } | |
366 | ||
75814ad4 MM |
367 | \f |
368 | /* Create a CONST_DOUBLE like immed_double_const, except reverse the | |
369 | two parts of the constant if the target is little endian. */ | |
370 | ||
d679bebf RK |
371 | struct rtx_def * |
372 | rs6000_immed_double_const (i0, i1, mode) | |
75814ad4 MM |
373 | HOST_WIDE_INT i0, i1; |
374 | enum machine_mode mode; | |
375 | { | |
376 | if (! WORDS_BIG_ENDIAN) | |
377 | return immed_double_const (i1, i0, mode); | |
378 | ||
379 | return immed_double_const (i0, i1, mode); | |
380 | } | |
381 | ||
5248c961 | 382 | \f |
9878760c RK |
383 | /* Return non-zero if this function is known to have a null epilogue. */ |
384 | ||
385 | int | |
386 | direct_return () | |
387 | { | |
4697a36c MM |
388 | if (reload_completed) |
389 | { | |
390 | rs6000_stack_t *info = rs6000_stack_info (); | |
391 | ||
392 | if (info->first_gp_reg_save == 32 | |
393 | && info->first_fp_reg_save == 64 | |
394 | && !info->lr_save_p | |
1b4a2731 | 395 | && !info->cr_save_p |
4697a36c MM |
396 | && !info->push_p) |
397 | return 1; | |
398 | } | |
399 | ||
400 | return 0; | |
9878760c RK |
401 | } |
402 | ||
403 | /* Returns 1 always. */ | |
404 | ||
405 | int | |
406 | any_operand (op, mode) | |
407 | register rtx op; | |
408 | enum machine_mode mode; | |
409 | { | |
410 | return 1; | |
411 | } | |
412 | ||
b6c9286a MM |
413 | /* Returns 1 if op is the count register */ |
414 | int count_register_operand(op, mode) | |
415 | register rtx op; | |
416 | enum machine_mode mode; | |
417 | { | |
418 | if (GET_CODE (op) != REG) | |
419 | return 0; | |
420 | ||
421 | if (REGNO (op) == COUNT_REGISTER_REGNUM) | |
422 | return 1; | |
423 | ||
424 | if (REGNO (op) > FIRST_PSEUDO_REGISTER) | |
425 | return 1; | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
802a0058 MM |
430 | /* Returns 1 if op is memory location for float/int conversions that masquerades |
431 | as a register. */ | |
432 | int fpmem_operand(op, mode) | |
433 | register rtx op; | |
434 | enum machine_mode mode; | |
435 | { | |
436 | if (GET_CODE (op) != REG) | |
437 | return 0; | |
438 | ||
439 | if (FPMEM_REGNO_P (REGNO (op))) | |
440 | return 1; | |
441 | ||
442 | #if 0 | |
443 | if (REGNO (op) > FIRST_PSEUDO_REGISTER) | |
444 | return 1; | |
445 | #endif | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
9878760c RK |
450 | /* Return 1 if OP is a constant that can fit in a D field. */ |
451 | ||
452 | int | |
453 | short_cint_operand (op, mode) | |
454 | register rtx op; | |
455 | enum machine_mode mode; | |
456 | { | |
457 | return (GET_CODE (op) == CONST_INT | |
a7653a2c | 458 | && (unsigned HOST_WIDE_INT) (INTVAL (op) + 0x8000) < 0x10000); |
9878760c RK |
459 | } |
460 | ||
461 | /* Similar for a unsigned D field. */ | |
462 | ||
463 | int | |
464 | u_short_cint_operand (op, mode) | |
465 | register rtx op; | |
466 | enum machine_mode mode; | |
467 | { | |
468 | return (GET_CODE (op) == CONST_INT && (INTVAL (op) & 0xffff0000) == 0); | |
469 | } | |
470 | ||
dcfedcd0 RK |
471 | /* Return 1 if OP is a CONST_INT that cannot fit in a signed D field. */ |
472 | ||
473 | int | |
474 | non_short_cint_operand (op, mode) | |
475 | register rtx op; | |
476 | enum machine_mode mode; | |
477 | { | |
478 | return (GET_CODE (op) == CONST_INT | |
a7653a2c | 479 | && (unsigned HOST_WIDE_INT) (INTVAL (op) + 0x8000) >= 0x10000); |
dcfedcd0 RK |
480 | } |
481 | ||
9878760c RK |
482 | /* Returns 1 if OP is a register that is not special (i.e., not MQ, |
483 | ctr, or lr). */ | |
484 | ||
485 | int | |
cd2b37d9 | 486 | gpc_reg_operand (op, mode) |
9878760c RK |
487 | register rtx op; |
488 | enum machine_mode mode; | |
489 | { | |
490 | return (register_operand (op, mode) | |
802a0058 MM |
491 | && (GET_CODE (op) != REG |
492 | || (REGNO (op) >= 67 && !FPMEM_REGNO_P (REGNO (op))) | |
493 | || REGNO (op) < 64)); | |
9878760c RK |
494 | } |
495 | ||
496 | /* Returns 1 if OP is either a pseudo-register or a register denoting a | |
497 | CR field. */ | |
498 | ||
499 | int | |
500 | cc_reg_operand (op, mode) | |
501 | register rtx op; | |
502 | enum machine_mode mode; | |
503 | { | |
504 | return (register_operand (op, mode) | |
505 | && (GET_CODE (op) != REG | |
506 | || REGNO (op) >= FIRST_PSEUDO_REGISTER | |
507 | || CR_REGNO_P (REGNO (op)))); | |
508 | } | |
509 | ||
510 | /* Returns 1 if OP is either a constant integer valid for a D-field or a | |
511 | non-special register. If a register, it must be in the proper mode unless | |
512 | MODE is VOIDmode. */ | |
513 | ||
514 | int | |
515 | reg_or_short_operand (op, mode) | |
516 | register rtx op; | |
517 | enum machine_mode mode; | |
518 | { | |
f5a28898 | 519 | return short_cint_operand (op, mode) || gpc_reg_operand (op, mode); |
9878760c RK |
520 | } |
521 | ||
522 | /* Similar, except check if the negation of the constant would be valid for | |
523 | a D-field. */ | |
524 | ||
525 | int | |
526 | reg_or_neg_short_operand (op, mode) | |
527 | register rtx op; | |
528 | enum machine_mode mode; | |
529 | { | |
530 | if (GET_CODE (op) == CONST_INT) | |
531 | return CONST_OK_FOR_LETTER_P (INTVAL (op), 'P'); | |
532 | ||
cd2b37d9 | 533 | return gpc_reg_operand (op, mode); |
9878760c RK |
534 | } |
535 | ||
536 | /* Return 1 if the operand is either a register or an integer whose high-order | |
537 | 16 bits are zero. */ | |
538 | ||
539 | int | |
540 | reg_or_u_short_operand (op, mode) | |
541 | register rtx op; | |
542 | enum machine_mode mode; | |
543 | { | |
544 | if (GET_CODE (op) == CONST_INT | |
545 | && (INTVAL (op) & 0xffff0000) == 0) | |
546 | return 1; | |
547 | ||
cd2b37d9 | 548 | return gpc_reg_operand (op, mode); |
9878760c RK |
549 | } |
550 | ||
551 | /* Return 1 is the operand is either a non-special register or ANY | |
552 | constant integer. */ | |
553 | ||
554 | int | |
555 | reg_or_cint_operand (op, mode) | |
556 | register rtx op; | |
557 | enum machine_mode mode; | |
558 | { | |
cd2b37d9 | 559 | return GET_CODE (op) == CONST_INT || gpc_reg_operand (op, mode); |
9878760c RK |
560 | } |
561 | ||
766a866c MM |
562 | /* Return 1 if the operand is an operand that can be loaded via the GOT */ |
563 | ||
564 | int | |
565 | got_operand (op, mode) | |
566 | register rtx op; | |
567 | enum machine_mode mode; | |
568 | { | |
569 | return (GET_CODE (op) == SYMBOL_REF | |
570 | || GET_CODE (op) == CONST | |
571 | || GET_CODE (op) == LABEL_REF); | |
572 | } | |
573 | ||
4e74d8ec MM |
574 | /* Return the number of instructions it takes to form a constant in an |
575 | integer register. */ | |
576 | ||
577 | static int | |
578 | num_insns_constant_wide (value) | |
579 | HOST_WIDE_INT value; | |
580 | { | |
581 | /* signed constant loadable with {cal|addi} */ | |
582 | if (((unsigned HOST_WIDE_INT)value + 0x8000) < 0x10000) | |
583 | return 1; | |
584 | ||
585 | #if HOST_BITS_PER_WIDE_INT == 32 | |
586 | /* constant loadable with {cau|addis} */ | |
587 | else if ((value & 0xffff) == 0) | |
588 | return 1; | |
589 | ||
590 | #else | |
591 | /* constant loadable with {cau|addis} */ | |
592 | else if ((value & 0xffff) == 0 && (value & ~0xffffffff) == 0) | |
593 | return 1; | |
594 | ||
595 | else if (TARGET_64BIT) | |
596 | { | |
597 | HOST_WIDE_INT low = value & 0xffffffff; | |
598 | HOST_WIDE_INT high = value >> 32; | |
599 | ||
600 | if (high == 0 && (low & 0x80000000) == 0) | |
601 | return 2; | |
602 | ||
603 | else if (high == 0xffffffff && (low & 0x80000000) != 0) | |
604 | return 2; | |
605 | ||
606 | else if (!low) | |
607 | return num_insns_constant_wide (high) + 1; | |
608 | ||
609 | else | |
610 | return (num_insns_constant_wide (high) | |
e396202a | 611 | + num_insns_constant_wide (low) + 1); |
4e74d8ec MM |
612 | } |
613 | #endif | |
614 | ||
615 | else | |
616 | return 2; | |
617 | } | |
618 | ||
619 | int | |
620 | num_insns_constant (op, mode) | |
621 | rtx op; | |
622 | enum machine_mode mode; | |
623 | { | |
4e74d8ec MM |
624 | if (GET_CODE (op) == CONST_INT) |
625 | return num_insns_constant_wide (INTVAL (op)); | |
626 | ||
6fc48950 MM |
627 | else if (GET_CODE (op) == CONST_DOUBLE && mode == SFmode) |
628 | { | |
629 | long l; | |
630 | REAL_VALUE_TYPE rv; | |
631 | ||
632 | REAL_VALUE_FROM_CONST_DOUBLE (rv, op); | |
633 | REAL_VALUE_TO_TARGET_SINGLE (rv, l); | |
634 | return num_insns_constant_wide ((HOST_WIDE_INT)l); | |
635 | } | |
636 | ||
4e74d8ec MM |
637 | else if (GET_CODE (op) == CONST_DOUBLE && TARGET_32BIT) |
638 | return (num_insns_constant_wide (CONST_DOUBLE_LOW (op)) | |
639 | + num_insns_constant_wide (CONST_DOUBLE_HIGH (op))); | |
640 | ||
641 | else if (GET_CODE (op) == CONST_DOUBLE && TARGET_64BIT) | |
642 | { | |
643 | HOST_WIDE_INT low = CONST_DOUBLE_LOW (op); | |
644 | HOST_WIDE_INT high = CONST_DOUBLE_HIGH (op); | |
645 | ||
646 | if (high == 0 && (low & 0x80000000) == 0) | |
647 | return num_insns_constant_wide (low); | |
648 | ||
649 | else if (((high & 0xffffffff) == 0xffffffff) | |
650 | && ((low & 0x80000000) != 0)) | |
651 | return num_insns_constant_wide (low); | |
652 | ||
653 | else if (low == 0) | |
654 | return num_insns_constant_wide (high) + 1; | |
655 | ||
656 | else | |
657 | return (num_insns_constant_wide (high) | |
658 | + num_insns_constant_wide (low) + 1); | |
659 | } | |
660 | ||
661 | else | |
662 | abort (); | |
663 | } | |
664 | ||
6f2f8311 RK |
665 | /* Return 1 if the operand is a CONST_DOUBLE and it can be put into a register |
666 | with one instruction per word. We only do this if we can safely read | |
667 | CONST_DOUBLE_{LOW,HIGH}. */ | |
9878760c RK |
668 | |
669 | int | |
670 | easy_fp_constant (op, mode) | |
671 | register rtx op; | |
672 | register enum machine_mode mode; | |
673 | { | |
9878760c RK |
674 | if (GET_CODE (op) != CONST_DOUBLE |
675 | || GET_MODE (op) != mode | |
4e74d8ec | 676 | || (GET_MODE_CLASS (mode) != MODE_FLOAT && mode != DImode)) |
9878760c RK |
677 | return 0; |
678 | ||
b6c9286a | 679 | /* Consider all constants with -msoft-float to be easy */ |
4e74d8ec | 680 | if (TARGET_SOFT_FLOAT && mode != DImode) |
b6c9286a MM |
681 | return 1; |
682 | ||
a7273471 MM |
683 | /* If we are using V.4 style PIC, consider all constants to be hard */ |
684 | if (flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS)) | |
685 | return 0; | |
686 | ||
5ae4759c MM |
687 | #ifdef TARGET_RELOCATABLE |
688 | /* Similarly if we are using -mrelocatable, consider all constants to be hard */ | |
689 | if (TARGET_RELOCATABLE) | |
690 | return 0; | |
691 | #endif | |
692 | ||
042259f2 DE |
693 | if (mode == DFmode) |
694 | { | |
695 | long k[2]; | |
696 | REAL_VALUE_TYPE rv; | |
697 | ||
698 | REAL_VALUE_FROM_CONST_DOUBLE (rv, op); | |
699 | REAL_VALUE_TO_TARGET_DOUBLE (rv, k); | |
9878760c | 700 | |
4e74d8ec MM |
701 | return (num_insns_constant_wide ((HOST_WIDE_INT)k[0]) == 1 |
702 | && num_insns_constant_wide ((HOST_WIDE_INT)k[1]) == 1); | |
042259f2 | 703 | } |
4e74d8ec MM |
704 | |
705 | else if (mode == SFmode) | |
042259f2 DE |
706 | { |
707 | long l; | |
708 | REAL_VALUE_TYPE rv; | |
709 | ||
710 | REAL_VALUE_FROM_CONST_DOUBLE (rv, op); | |
711 | REAL_VALUE_TO_TARGET_SINGLE (rv, l); | |
9878760c | 712 | |
4e74d8ec | 713 | return num_insns_constant_wide (l) == 1; |
042259f2 | 714 | } |
4e74d8ec MM |
715 | |
716 | else if (mode == DImode && TARGET_32BIT) | |
717 | return num_insns_constant (op, DImode) == 2; | |
718 | ||
719 | else | |
720 | abort (); | |
9878760c | 721 | } |
8f75773e | 722 | |
b6c9286a MM |
723 | /* Return 1 if the operand is in volatile memory. Note that during the |
724 | RTL generation phase, memory_operand does not return TRUE for | |
725 | volatile memory references. So this function allows us to | |
726 | recognize volatile references where its safe. */ | |
727 | ||
728 | int | |
729 | volatile_mem_operand (op, mode) | |
730 | register rtx op; | |
731 | enum machine_mode mode; | |
732 | { | |
733 | if (GET_CODE (op) != MEM) | |
734 | return 0; | |
735 | ||
736 | if (!MEM_VOLATILE_P (op)) | |
737 | return 0; | |
738 | ||
739 | if (mode != GET_MODE (op)) | |
740 | return 0; | |
741 | ||
742 | if (reload_completed) | |
743 | return memory_operand (op, mode); | |
744 | ||
745 | if (reload_in_progress) | |
746 | return strict_memory_address_p (mode, XEXP (op, 0)); | |
747 | ||
748 | return memory_address_p (mode, XEXP (op, 0)); | |
749 | } | |
750 | ||
5b5040b9 | 751 | /* Return 1 if the operand is an offsettable memory address. */ |
914c2e77 RK |
752 | |
753 | int | |
5b5040b9 | 754 | offsettable_addr_operand (op, mode) |
914c2e77 RK |
755 | register rtx op; |
756 | enum machine_mode mode; | |
757 | { | |
8f75773e | 758 | return offsettable_address_p (reload_completed | reload_in_progress, |
5b5040b9 | 759 | mode, op); |
914c2e77 RK |
760 | } |
761 | ||
9878760c RK |
762 | /* Return 1 if the operand is either an easy FP constant (see above) or |
763 | memory. */ | |
764 | ||
765 | int | |
766 | mem_or_easy_const_operand (op, mode) | |
767 | register rtx op; | |
768 | enum machine_mode mode; | |
769 | { | |
770 | return memory_operand (op, mode) || easy_fp_constant (op, mode); | |
771 | } | |
772 | ||
773 | /* Return 1 if the operand is either a non-special register or an item | |
774 | that can be used as the operand of an SI add insn. */ | |
775 | ||
776 | int | |
777 | add_operand (op, mode) | |
778 | register rtx op; | |
779 | enum machine_mode mode; | |
780 | { | |
781 | return (reg_or_short_operand (op, mode) | |
782 | || (GET_CODE (op) == CONST_INT && (INTVAL (op) & 0xffff) == 0)); | |
783 | } | |
784 | ||
dcfedcd0 RK |
785 | /* Return 1 if OP is a constant but not a valid add_operand. */ |
786 | ||
787 | int | |
788 | non_add_cint_operand (op, mode) | |
789 | register rtx op; | |
790 | enum machine_mode mode; | |
791 | { | |
792 | return (GET_CODE (op) == CONST_INT | |
a7653a2c | 793 | && (unsigned HOST_WIDE_INT) (INTVAL (op) + 0x8000) >= 0x10000 |
dcfedcd0 RK |
794 | && (INTVAL (op) & 0xffff) != 0); |
795 | } | |
796 | ||
9878760c RK |
797 | /* Return 1 if the operand is a non-special register or a constant that |
798 | can be used as the operand of an OR or XOR insn on the RS/6000. */ | |
799 | ||
800 | int | |
801 | logical_operand (op, mode) | |
802 | register rtx op; | |
803 | enum machine_mode mode; | |
804 | { | |
cd2b37d9 | 805 | return (gpc_reg_operand (op, mode) |
9878760c RK |
806 | || (GET_CODE (op) == CONST_INT |
807 | && ((INTVAL (op) & 0xffff0000) == 0 | |
808 | || (INTVAL (op) & 0xffff) == 0))); | |
809 | } | |
810 | ||
dcfedcd0 RK |
811 | /* Return 1 if C is a constant that is not a logical operand (as |
812 | above). */ | |
813 | ||
814 | int | |
815 | non_logical_cint_operand (op, mode) | |
816 | register rtx op; | |
817 | enum machine_mode mode; | |
818 | { | |
819 | return (GET_CODE (op) == CONST_INT | |
820 | && (INTVAL (op) & 0xffff0000) != 0 | |
821 | && (INTVAL (op) & 0xffff) != 0); | |
822 | } | |
823 | ||
9878760c RK |
824 | /* Return 1 if C is a constant that can be encoded in a mask on the |
825 | RS/6000. It is if there are no more than two 1->0 or 0->1 transitions. | |
826 | Reject all ones and all zeros, since these should have been optimized | |
827 | away and confuse the making of MB and ME. */ | |
828 | ||
829 | int | |
830 | mask_constant (c) | |
831 | register int c; | |
832 | { | |
833 | int i; | |
834 | int last_bit_value; | |
835 | int transitions = 0; | |
836 | ||
837 | if (c == 0 || c == ~0) | |
838 | return 0; | |
839 | ||
840 | last_bit_value = c & 1; | |
841 | ||
842 | for (i = 1; i < 32; i++) | |
843 | if (((c >>= 1) & 1) != last_bit_value) | |
844 | last_bit_value ^= 1, transitions++; | |
845 | ||
846 | return transitions <= 2; | |
847 | } | |
848 | ||
849 | /* Return 1 if the operand is a constant that is a mask on the RS/6000. */ | |
850 | ||
851 | int | |
852 | mask_operand (op, mode) | |
853 | register rtx op; | |
854 | enum machine_mode mode; | |
855 | { | |
856 | return GET_CODE (op) == CONST_INT && mask_constant (INTVAL (op)); | |
857 | } | |
858 | ||
859 | /* Return 1 if the operand is either a non-special register or a | |
860 | constant that can be used as the operand of an RS/6000 logical AND insn. */ | |
861 | ||
862 | int | |
863 | and_operand (op, mode) | |
864 | register rtx op; | |
865 | enum machine_mode mode; | |
866 | { | |
867 | return (reg_or_short_operand (op, mode) | |
868 | || logical_operand (op, mode) | |
869 | || mask_operand (op, mode)); | |
870 | } | |
871 | ||
dcfedcd0 RK |
872 | /* Return 1 if the operand is a constant but not a valid operand for an AND |
873 | insn. */ | |
874 | ||
875 | int | |
876 | non_and_cint_operand (op, mode) | |
877 | register rtx op; | |
878 | enum machine_mode mode; | |
879 | { | |
880 | return GET_CODE (op) == CONST_INT && ! and_operand (op, mode); | |
881 | } | |
882 | ||
9878760c RK |
883 | /* Return 1 if the operand is a general register or memory operand. */ |
884 | ||
885 | int | |
886 | reg_or_mem_operand (op, mode) | |
887 | register rtx op; | |
888 | register enum machine_mode mode; | |
889 | { | |
b6c9286a MM |
890 | return (gpc_reg_operand (op, mode) |
891 | || memory_operand (op, mode) | |
892 | || volatile_mem_operand (op, mode)); | |
9878760c RK |
893 | } |
894 | ||
a7a813f7 RK |
895 | /* Return 1 if the operand is a general register or memory operand without |
896 | pre-inc or pre_dec which produces invalid form of PowerPC lwa | |
897 | instruction. */ | |
898 | ||
899 | int | |
900 | lwa_operand (op, mode) | |
901 | register rtx op; | |
902 | register enum machine_mode mode; | |
903 | { | |
904 | rtx inner = op; | |
905 | ||
906 | if (reload_completed && GET_CODE (inner) == SUBREG) | |
907 | inner = SUBREG_REG (inner); | |
908 | ||
909 | return gpc_reg_operand (inner, mode) | |
910 | || (memory_operand (inner, mode) | |
911 | && GET_CODE (XEXP (inner, 0)) != PRE_INC | |
912 | && GET_CODE (XEXP (inner, 0)) != PRE_DEC); | |
913 | } | |
914 | ||
9878760c RK |
915 | /* Return 1 if the operand, used inside a MEM, is a valid first argument |
916 | to CALL. This is a SYMBOL_REF or a pseudo-register, which will be | |
917 | forced to lr. */ | |
918 | ||
919 | int | |
920 | call_operand (op, mode) | |
921 | register rtx op; | |
922 | enum machine_mode mode; | |
923 | { | |
924 | if (mode != VOIDmode && GET_MODE (op) != mode) | |
925 | return 0; | |
926 | ||
927 | return (GET_CODE (op) == SYMBOL_REF | |
928 | || (GET_CODE (op) == REG && REGNO (op) >= FIRST_PSEUDO_REGISTER)); | |
929 | } | |
930 | ||
2af3d377 RK |
931 | |
932 | /* Return 1 if the operand is a SYMBOL_REF for a function known to be in | |
933 | this file. */ | |
934 | ||
935 | int | |
936 | current_file_function_operand (op, mode) | |
937 | register rtx op; | |
938 | enum machine_mode mode; | |
939 | { | |
940 | return (GET_CODE (op) == SYMBOL_REF | |
941 | && (SYMBOL_REF_FLAG (op) | |
942 | || op == XEXP (DECL_RTL (current_function_decl), 0))); | |
943 | } | |
944 | ||
945 | ||
9878760c RK |
946 | /* Return 1 if this operand is a valid input for a move insn. */ |
947 | ||
948 | int | |
949 | input_operand (op, mode) | |
950 | register rtx op; | |
951 | enum machine_mode mode; | |
952 | { | |
eb4e8003 | 953 | /* Memory is always valid. */ |
9878760c RK |
954 | if (memory_operand (op, mode)) |
955 | return 1; | |
956 | ||
eb4e8003 RK |
957 | /* For floating-point, easy constants are valid. */ |
958 | if (GET_MODE_CLASS (mode) == MODE_FLOAT | |
959 | && CONSTANT_P (op) | |
960 | && easy_fp_constant (op, mode)) | |
961 | return 1; | |
962 | ||
4e74d8ec MM |
963 | /* Allow any integer constant. */ |
964 | if (GET_MODE_CLASS (mode) == MODE_INT | |
965 | && (GET_CODE (op) == CONST_INT || GET_CODE (op) == CONST_DOUBLE)) | |
966 | return 1; | |
967 | ||
eb4e8003 RK |
968 | /* For floating-point or multi-word mode, the only remaining valid type |
969 | is a register. */ | |
9878760c RK |
970 | if (GET_MODE_CLASS (mode) == MODE_FLOAT |
971 | || GET_MODE_SIZE (mode) > UNITS_PER_WORD) | |
eb4e8003 | 972 | return register_operand (op, mode); |
9878760c | 973 | |
88fe15a1 RK |
974 | /* The only cases left are integral modes one word or smaller (we |
975 | do not get called for MODE_CC values). These can be in any | |
976 | register. */ | |
977 | if (register_operand (op, mode)) | |
a8b3aeda | 978 | return 1; |
88fe15a1 | 979 | |
84cf9dda | 980 | /* A SYMBOL_REF referring to the TOC is valid. */ |
7fec4abd | 981 | if (LEGITIMATE_CONSTANT_POOL_ADDRESS_P (op)) |
84cf9dda RK |
982 | return 1; |
983 | ||
b6c9286a MM |
984 | /* Windows NT allows SYMBOL_REFs and LABEL_REFs against the TOC |
985 | directly in the instruction stream */ | |
986 | if (DEFAULT_ABI == ABI_NT | |
987 | && (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == LABEL_REF)) | |
988 | return 1; | |
989 | ||
88228c4b MM |
990 | /* V.4 allows SYMBOL_REFs and CONSTs that are in the small data region |
991 | to be valid. */ | |
c81bebd7 | 992 | if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) |
88228c4b MM |
993 | && (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == CONST) |
994 | && small_data_operand (op, Pmode)) | |
995 | return 1; | |
996 | ||
042259f2 | 997 | return 0; |
9878760c | 998 | } |
7509c759 MM |
999 | |
1000 | /* Return 1 for an operand in small memory on V.4/eabi */ | |
1001 | ||
1002 | int | |
1003 | small_data_operand (op, mode) | |
1004 | rtx op; | |
1005 | enum machine_mode mode; | |
1006 | { | |
d9407988 | 1007 | #ifdef TARGET_SDATA |
7509c759 MM |
1008 | rtx sym_ref, const_part; |
1009 | ||
d9407988 | 1010 | if (rs6000_sdata == SDATA_NONE || rs6000_sdata == SDATA_DATA) |
a54d04b7 | 1011 | return 0; |
a54d04b7 | 1012 | |
5b9d9a0c | 1013 | if (DEFAULT_ABI != ABI_V4 && DEFAULT_ABI != ABI_SOLARIS) |
7509c759 MM |
1014 | return 0; |
1015 | ||
88228c4b MM |
1016 | if (GET_CODE (op) == SYMBOL_REF) |
1017 | sym_ref = op; | |
1018 | ||
1019 | else if (GET_CODE (op) != CONST | |
1020 | || GET_CODE (XEXP (op, 0)) != PLUS | |
1021 | || GET_CODE (XEXP (XEXP (op, 0), 0)) != SYMBOL_REF | |
1022 | || GET_CODE (XEXP (XEXP (op, 0), 1)) != CONST_INT) | |
7509c759 MM |
1023 | return 0; |
1024 | ||
88228c4b MM |
1025 | else |
1026 | sym_ref = XEXP (XEXP (op, 0), 0); | |
1027 | ||
1028 | if (*XSTR (sym_ref, 0) != '@') | |
7509c759 MM |
1029 | return 0; |
1030 | ||
1031 | return 1; | |
d9407988 MM |
1032 | |
1033 | #else | |
1034 | return 0; | |
1035 | #endif | |
7509c759 MM |
1036 | } |
1037 | ||
4697a36c MM |
1038 | \f |
1039 | /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
1040 | for a call to a function whose data type is FNTYPE. | |
1041 | For a library call, FNTYPE is 0. | |
1042 | ||
1043 | For incoming args we set the number of arguments in the prototype large | |
1c20ae99 | 1044 | so we never return a PARALLEL. */ |
4697a36c MM |
1045 | |
1046 | void | |
1047 | init_cumulative_args (cum, fntype, libname, incoming) | |
1048 | CUMULATIVE_ARGS *cum; | |
1049 | tree fntype; | |
1050 | rtx libname; | |
1051 | int incoming; | |
1052 | { | |
1053 | static CUMULATIVE_ARGS zero_cumulative; | |
7509c759 | 1054 | enum rs6000_abi abi = DEFAULT_ABI; |
4697a36c MM |
1055 | |
1056 | *cum = zero_cumulative; | |
1057 | cum->words = 0; | |
1058 | cum->fregno = FP_ARG_MIN_REG; | |
1059 | cum->prototype = (fntype && TYPE_ARG_TYPES (fntype)); | |
7509c759 | 1060 | cum->call_cookie = CALL_NORMAL; |
4697a36c MM |
1061 | |
1062 | if (incoming) | |
1063 | { | |
1c20ae99 | 1064 | cum->nargs_prototype = 1000; /* don't return a PARALLEL */ |
c81bebd7 | 1065 | if (abi == ABI_V4 || abi == ABI_SOLARIS) |
4697a36c | 1066 | cum->varargs_offset = RS6000_VARARGS_OFFSET; |
4697a36c MM |
1067 | } |
1068 | ||
1069 | else if (cum->prototype) | |
1070 | cum->nargs_prototype = (list_length (TYPE_ARG_TYPES (fntype)) - 1 | |
1071 | + (TYPE_MODE (TREE_TYPE (fntype)) == BLKmode | |
1072 | || RETURN_IN_MEMORY (TREE_TYPE (fntype)))); | |
1073 | ||
1074 | else | |
1075 | cum->nargs_prototype = 0; | |
1076 | ||
1077 | cum->orig_nargs = cum->nargs_prototype; | |
7509c759 MM |
1078 | |
1079 | /* Check for DLL import functions */ | |
1080 | if (abi == ABI_NT | |
1081 | && fntype | |
1082 | && lookup_attribute ("dllimport", TYPE_ATTRIBUTES (fntype))) | |
1083 | cum->call_cookie = CALL_NT_DLLIMPORT; | |
1084 | ||
6a4cee5f MM |
1085 | /* Also check for longcall's */ |
1086 | else if (fntype && lookup_attribute ("longcall", TYPE_ATTRIBUTES (fntype))) | |
1087 | cum->call_cookie = CALL_LONG; | |
1088 | ||
4697a36c MM |
1089 | if (TARGET_DEBUG_ARG) |
1090 | { | |
1091 | fprintf (stderr, "\ninit_cumulative_args:"); | |
1092 | if (fntype) | |
1093 | { | |
1094 | tree ret_type = TREE_TYPE (fntype); | |
1095 | fprintf (stderr, " ret code = %s,", | |
1096 | tree_code_name[ (int)TREE_CODE (ret_type) ]); | |
1097 | } | |
1098 | ||
c81bebd7 | 1099 | if ((abi == ABI_V4 || abi == ABI_SOLARIS) && incoming) |
4697a36c | 1100 | fprintf (stderr, " varargs = %d, ", cum->varargs_offset); |
7509c759 | 1101 | |
6a4cee5f | 1102 | if (cum->call_cookie & CALL_NT_DLLIMPORT) |
7509c759 | 1103 | fprintf (stderr, " dllimport,"); |
4697a36c | 1104 | |
6a4cee5f MM |
1105 | if (cum->call_cookie & CALL_LONG) |
1106 | fprintf (stderr, " longcall,"); | |
1107 | ||
4697a36c MM |
1108 | fprintf (stderr, " proto = %d, nargs = %d\n", |
1109 | cum->prototype, cum->nargs_prototype); | |
1110 | } | |
1111 | } | |
1112 | \f | |
b6c9286a MM |
1113 | /* If defined, a C expression that gives the alignment boundary, in bits, |
1114 | of an argument with the specified mode and type. If it is not defined, | |
1115 | PARM_BOUNDARY is used for all arguments. | |
1116 | ||
e1f83b4d MM |
1117 | Windows NT wants anything >= 8 bytes to be double word aligned. |
1118 | ||
1119 | V.4 wants long longs to be double word aligned. */ | |
b6c9286a MM |
1120 | |
1121 | int | |
1122 | function_arg_boundary (mode, type) | |
1123 | enum machine_mode mode; | |
1124 | tree type; | |
1125 | { | |
c81bebd7 | 1126 | if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) && mode == DImode) |
e1f83b4d MM |
1127 | return 64; |
1128 | ||
b6c9286a MM |
1129 | if (DEFAULT_ABI != ABI_NT || TARGET_64BIT) |
1130 | return PARM_BOUNDARY; | |
1131 | ||
1132 | if (mode != BLKmode) | |
1133 | return (GET_MODE_SIZE (mode)) >= 8 ? 64 : 32; | |
1134 | ||
1135 | return (int_size_in_bytes (type) >= 8) ? 64 : 32; | |
1136 | } | |
1137 | \f | |
4697a36c MM |
1138 | /* Update the data in CUM to advance over an argument |
1139 | of mode MODE and data type TYPE. | |
1140 | (TYPE is null for libcalls where that information may not be available.) */ | |
1141 | ||
1142 | void | |
1143 | function_arg_advance (cum, mode, type, named) | |
1144 | CUMULATIVE_ARGS *cum; | |
1145 | enum machine_mode mode; | |
1146 | tree type; | |
1147 | int named; | |
1148 | { | |
b6c9286a MM |
1149 | int align = ((cum->words & 1) != 0 && function_arg_boundary (mode, type) == 64) ? 1 : 0; |
1150 | cum->words += align; | |
4697a36c MM |
1151 | cum->nargs_prototype--; |
1152 | ||
c81bebd7 | 1153 | if (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) |
4697a36c MM |
1154 | { |
1155 | /* Long longs must not be split between registers and stack */ | |
1156 | if ((GET_MODE_CLASS (mode) != MODE_FLOAT || TARGET_SOFT_FLOAT) | |
1157 | && type && !AGGREGATE_TYPE_P (type) | |
1158 | && cum->words < GP_ARG_NUM_REG | |
1159 | && cum->words + RS6000_ARG_SIZE (mode, type, named) > GP_ARG_NUM_REG) | |
1160 | { | |
1161 | cum->words = GP_ARG_NUM_REG; | |
1162 | } | |
1163 | ||
1164 | /* Aggregates get passed as pointers */ | |
1165 | if (type && AGGREGATE_TYPE_P (type)) | |
1166 | cum->words++; | |
1167 | ||
1168 | /* Floats go in registers, & don't occupy space in the GP registers | |
1169 | like they do for AIX unless software floating point. */ | |
1170 | else if (GET_MODE_CLASS (mode) == MODE_FLOAT | |
1171 | && TARGET_HARD_FLOAT | |
1172 | && cum->fregno <= FP_ARG_V4_MAX_REG) | |
1173 | cum->fregno++; | |
1174 | ||
1175 | else | |
1176 | cum->words += RS6000_ARG_SIZE (mode, type, 1); | |
1177 | } | |
1178 | else | |
4697a36c MM |
1179 | if (named) |
1180 | { | |
1181 | cum->words += RS6000_ARG_SIZE (mode, type, named); | |
1182 | if (GET_MODE_CLASS (mode) == MODE_FLOAT && TARGET_HARD_FLOAT) | |
1183 | cum->fregno++; | |
1184 | } | |
1185 | ||
1186 | if (TARGET_DEBUG_ARG) | |
1187 | fprintf (stderr, | |
b6c9286a MM |
1188 | "function_adv: words = %2d, fregno = %2d, nargs = %4d, proto = %d, mode = %4s, named = %d, align = %d\n", |
1189 | cum->words, cum->fregno, cum->nargs_prototype, cum->prototype, GET_MODE_NAME (mode), named, align); | |
4697a36c MM |
1190 | } |
1191 | \f | |
1192 | /* Determine where to put an argument to a function. | |
1193 | Value is zero to push the argument on the stack, | |
1194 | or a hard register in which to store the argument. | |
1195 | ||
1196 | MODE is the argument's machine mode. | |
1197 | TYPE is the data type of the argument (as a tree). | |
1198 | This is null for libcalls where that information may | |
1199 | not be available. | |
1200 | CUM is a variable of type CUMULATIVE_ARGS which gives info about | |
1201 | the preceding args and about the function being called. | |
1202 | NAMED is nonzero if this argument is a named parameter | |
1203 | (otherwise it is an extra parameter matching an ellipsis). | |
1204 | ||
1205 | On RS/6000 the first eight words of non-FP are normally in registers | |
1206 | and the rest are pushed. Under AIX, the first 13 FP args are in registers. | |
1207 | Under V.4, the first 8 FP args are in registers. | |
1208 | ||
1209 | If this is floating-point and no prototype is specified, we use | |
1210 | both an FP and integer register (or possibly FP reg and stack). Library | |
1211 | functions (when TYPE is zero) always have the proper types for args, | |
1212 | so we can pass the FP value just in one register. emit_library_function | |
1c20ae99 | 1213 | doesn't support PARALLEL anyway. */ |
4697a36c MM |
1214 | |
1215 | struct rtx_def * | |
1216 | function_arg (cum, mode, type, named) | |
1217 | CUMULATIVE_ARGS *cum; | |
1218 | enum machine_mode mode; | |
1219 | tree type; | |
1220 | int named; | |
1221 | { | |
b6c9286a MM |
1222 | int align = ((cum->words & 1) != 0 && function_arg_boundary (mode, type) == 64) ? 1 : 0; |
1223 | int align_words = cum->words + align; | |
1224 | ||
4697a36c MM |
1225 | if (TARGET_DEBUG_ARG) |
1226 | fprintf (stderr, | |
b6c9286a MM |
1227 | "function_arg: words = %2d, fregno = %2d, nargs = %4d, proto = %d, mode = %4s, named = %d, align = %d\n", |
1228 | cum->words, cum->fregno, cum->nargs_prototype, cum->prototype, GET_MODE_NAME (mode), named, align); | |
4697a36c MM |
1229 | |
1230 | /* Return a marker to indicate whether CR1 needs to set or clear the bit that V.4 | |
1231 | uses to say fp args were passed in registers. Assume that we don't need the | |
1232 | marker for software floating point, or compiler generated library calls. */ | |
1233 | if (mode == VOIDmode) | |
1234 | { | |
7509c759 MM |
1235 | enum rs6000_abi abi = DEFAULT_ABI; |
1236 | ||
c81bebd7 | 1237 | if ((abi == ABI_V4 || abi == ABI_SOLARIS) |
7509c759 MM |
1238 | && TARGET_HARD_FLOAT |
1239 | && cum->nargs_prototype < 0 | |
4697a36c | 1240 | && type && (cum->prototype || TARGET_NO_PROTOTYPE)) |
7509c759 | 1241 | { |
6a4cee5f MM |
1242 | return GEN_INT (cum->call_cookie |
1243 | | ((cum->fregno == FP_ARG_MIN_REG) | |
1244 | ? CALL_V4_SET_FP_ARGS | |
1245 | : CALL_V4_CLEAR_FP_ARGS)); | |
7509c759 | 1246 | } |
4697a36c | 1247 | |
7509c759 | 1248 | return GEN_INT (cum->call_cookie); |
4697a36c MM |
1249 | } |
1250 | ||
1251 | if (!named) | |
1252 | { | |
c81bebd7 | 1253 | if (DEFAULT_ABI != ABI_V4 && DEFAULT_ABI != ABI_SOLARIS) |
4697a36c MM |
1254 | return NULL_RTX; |
1255 | } | |
1256 | ||
1257 | if (type && TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
1258 | return NULL_RTX; | |
1259 | ||
1260 | if (USE_FP_FOR_ARG_P (*cum, mode, type)) | |
1261 | { | |
5b9d9a0c | 1262 | if (DEFAULT_ABI == ABI_V4 /* V.4 never passes FP values in GP registers */ |
c81bebd7 | 1263 | || DEFAULT_ABI == ABI_SOLARIS |
5b9d9a0c MM |
1264 | || ! type |
1265 | || ((cum->nargs_prototype > 0) | |
1266 | /* IBM AIX extended its linkage convention definition always to | |
1267 | require FP args after register save area hole on the stack. */ | |
1268 | && (DEFAULT_ABI != ABI_AIX | |
1269 | || ! TARGET_XL_CALL | |
1270 | || (align_words < GP_ARG_NUM_REG)))) | |
4697a36c MM |
1271 | return gen_rtx (REG, mode, cum->fregno); |
1272 | ||
1c20ae99 JW |
1273 | return gen_rtx (PARALLEL, mode, |
1274 | gen_rtvec | |
1275 | (2, | |
1276 | gen_rtx (EXPR_LIST, VOIDmode, | |
1277 | ((align_words >= GP_ARG_NUM_REG) | |
1278 | ? NULL_RTX | |
1279 | : (align_words | |
1280 | + RS6000_ARG_SIZE (mode, type, named) | |
1281 | > GP_ARG_NUM_REG | |
1282 | /* If this is partially on the stack, then | |
1283 | we only include the portion actually | |
1284 | in registers here. */ | |
1285 | ? gen_rtx (REG, SImode, | |
1286 | GP_ARG_MIN_REG + align_words) | |
1287 | : gen_rtx (REG, mode, | |
1288 | GP_ARG_MIN_REG + align_words))), | |
1289 | const0_rtx), | |
1290 | gen_rtx (EXPR_LIST, VOIDmode, | |
1291 | gen_rtx (REG, mode, cum->fregno), | |
1292 | const0_rtx))); | |
4697a36c MM |
1293 | } |
1294 | ||
4697a36c | 1295 | /* Long longs won't be split between register and stack */ |
c81bebd7 | 1296 | else if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) && |
b6c9286a | 1297 | align_words + RS6000_ARG_SIZE (mode, type, named) > GP_ARG_NUM_REG) |
4697a36c MM |
1298 | { |
1299 | return NULL_RTX; | |
1300 | } | |
4697a36c | 1301 | |
b6c9286a MM |
1302 | else if (align_words < GP_ARG_NUM_REG) |
1303 | return gen_rtx (REG, mode, GP_ARG_MIN_REG + align_words); | |
4697a36c MM |
1304 | |
1305 | return NULL_RTX; | |
1306 | } | |
1307 | \f | |
1308 | /* For an arg passed partly in registers and partly in memory, | |
1309 | this is the number of registers used. | |
1310 | For args passed entirely in registers or entirely in memory, zero. */ | |
1311 | ||
1312 | int | |
1313 | function_arg_partial_nregs (cum, mode, type, named) | |
1314 | CUMULATIVE_ARGS *cum; | |
1315 | enum machine_mode mode; | |
1316 | tree type; | |
1317 | int named; | |
1318 | { | |
1319 | if (! named) | |
1320 | return 0; | |
1321 | ||
c81bebd7 | 1322 | if (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) |
4697a36c | 1323 | return 0; |
4697a36c MM |
1324 | |
1325 | if (USE_FP_FOR_ARG_P (*cum, mode, type)) | |
1326 | { | |
1327 | if (cum->nargs_prototype >= 0) | |
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | if (cum->words < GP_ARG_NUM_REG | |
1332 | && GP_ARG_NUM_REG < (cum->words + RS6000_ARG_SIZE (mode, type, named))) | |
1333 | { | |
1334 | int ret = GP_ARG_NUM_REG - cum->words; | |
1335 | if (ret && TARGET_DEBUG_ARG) | |
1336 | fprintf (stderr, "function_arg_partial_nregs: %d\n", ret); | |
1337 | ||
1338 | return ret; | |
1339 | } | |
1340 | ||
1341 | return 0; | |
1342 | } | |
1343 | \f | |
1344 | /* A C expression that indicates when an argument must be passed by | |
1345 | reference. If nonzero for an argument, a copy of that argument is | |
1346 | made in memory and a pointer to the argument is passed instead of | |
1347 | the argument itself. The pointer is passed in whatever way is | |
1348 | appropriate for passing a pointer to that type. | |
1349 | ||
1350 | Under V.4, structures and unions are passed by reference. */ | |
1351 | ||
1352 | int | |
1353 | function_arg_pass_by_reference (cum, mode, type, named) | |
1354 | CUMULATIVE_ARGS *cum; | |
1355 | enum machine_mode mode; | |
1356 | tree type; | |
1357 | int named; | |
1358 | { | |
c81bebd7 MM |
1359 | if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) |
1360 | && type && AGGREGATE_TYPE_P (type)) | |
4697a36c MM |
1361 | { |
1362 | if (TARGET_DEBUG_ARG) | |
1363 | fprintf (stderr, "function_arg_pass_by_reference: aggregate\n"); | |
1364 | ||
1365 | return 1; | |
1366 | } | |
4697a36c MM |
1367 | |
1368 | return 0; | |
1369 | } | |
1370 | ||
1371 | \f | |
1372 | /* Perform any needed actions needed for a function that is receiving a | |
1373 | variable number of arguments. | |
1374 | ||
1375 | CUM is as above. | |
1376 | ||
1377 | MODE and TYPE are the mode and type of the current parameter. | |
1378 | ||
1379 | PRETEND_SIZE is a variable that should be set to the amount of stack | |
1380 | that must be pushed by the prolog to pretend that our caller pushed | |
1381 | it. | |
1382 | ||
1383 | Normally, this macro will push all remaining incoming registers on the | |
1384 | stack and set PRETEND_SIZE to the length of the registers pushed. */ | |
1385 | ||
1386 | void | |
1387 | setup_incoming_varargs (cum, mode, type, pretend_size, no_rtl) | |
1388 | CUMULATIVE_ARGS *cum; | |
1389 | enum machine_mode mode; | |
1390 | tree type; | |
1391 | int *pretend_size; | |
1392 | int no_rtl; | |
1393 | ||
1394 | { | |
1395 | rtx save_area = virtual_incoming_args_rtx; | |
1396 | int reg_size = (TARGET_64BIT) ? 8 : 4; | |
1397 | ||
1398 | if (TARGET_DEBUG_ARG) | |
1399 | fprintf (stderr, | |
1400 | "setup_vararg: words = %2d, fregno = %2d, nargs = %4d, proto = %d, mode = %4s, no_rtl= %d\n", | |
1401 | cum->words, cum->fregno, cum->nargs_prototype, cum->prototype, GET_MODE_NAME (mode), no_rtl); | |
1402 | ||
c81bebd7 | 1403 | if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) && !no_rtl) |
4697a36c MM |
1404 | { |
1405 | rs6000_sysv_varargs_p = 1; | |
1406 | save_area = plus_constant (frame_pointer_rtx, RS6000_VARARGS_OFFSET); | |
1407 | } | |
4697a36c MM |
1408 | |
1409 | if (cum->words < 8) | |
1410 | { | |
1411 | int first_reg_offset = cum->words; | |
1412 | ||
1413 | if (MUST_PASS_IN_STACK (mode, type)) | |
1414 | first_reg_offset += RS6000_ARG_SIZE (TYPE_MODE (type), type, 1); | |
1415 | ||
1416 | if (first_reg_offset > GP_ARG_NUM_REG) | |
1417 | first_reg_offset = GP_ARG_NUM_REG; | |
1418 | ||
1419 | if (!no_rtl && first_reg_offset != GP_ARG_NUM_REG) | |
1420 | move_block_from_reg | |
1421 | (GP_ARG_MIN_REG + first_reg_offset, | |
1422 | gen_rtx (MEM, BLKmode, | |
1423 | plus_constant (save_area, first_reg_offset * reg_size)), | |
1424 | GP_ARG_NUM_REG - first_reg_offset, | |
1425 | (GP_ARG_NUM_REG - first_reg_offset) * UNITS_PER_WORD); | |
1426 | ||
1427 | *pretend_size = (GP_ARG_NUM_REG - first_reg_offset) * UNITS_PER_WORD; | |
1428 | } | |
1429 | ||
4697a36c | 1430 | /* Save FP registers if needed. */ |
c81bebd7 | 1431 | if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) && TARGET_HARD_FLOAT && !no_rtl) |
4697a36c MM |
1432 | { |
1433 | int fregno = cum->fregno; | |
1434 | int num_fp_reg = FP_ARG_V4_MAX_REG + 1 - fregno; | |
1435 | ||
1436 | if (num_fp_reg >= 0) | |
1437 | { | |
1438 | rtx cr1 = gen_rtx (REG, CCmode, 69); | |
1439 | rtx lab = gen_label_rtx (); | |
1440 | int off = (GP_ARG_NUM_REG * reg_size) + ((fregno - FP_ARG_MIN_REG) * 8); | |
1441 | ||
1442 | emit_jump_insn (gen_rtx (SET, VOIDmode, | |
1443 | pc_rtx, | |
1444 | gen_rtx (IF_THEN_ELSE, VOIDmode, | |
1445 | gen_rtx (NE, VOIDmode, cr1, const0_rtx), | |
1446 | gen_rtx (LABEL_REF, VOIDmode, lab), | |
1447 | pc_rtx))); | |
1448 | ||
1449 | while ( num_fp_reg-- >= 0) | |
1450 | { | |
1451 | emit_move_insn (gen_rtx (MEM, DFmode, plus_constant (save_area, off)), | |
1452 | gen_rtx (REG, DFmode, fregno++)); | |
1453 | off += 8; | |
1454 | } | |
1455 | ||
1456 | emit_label (lab); | |
1457 | } | |
1458 | } | |
4697a36c MM |
1459 | } |
1460 | \f | |
1461 | /* If defined, is a C expression that produces the machine-specific | |
1462 | code for a call to `__builtin_saveregs'. This code will be moved | |
1463 | to the very beginning of the function, before any parameter access | |
1464 | are made. The return value of this function should be an RTX that | |
1465 | contains the value to use as the return of `__builtin_saveregs'. | |
1466 | ||
1467 | The argument ARGS is a `tree_list' containing the arguments that | |
1468 | were passed to `__builtin_saveregs'. | |
1469 | ||
1470 | If this macro is not defined, the compiler will output an ordinary | |
1471 | call to the library function `__builtin_saveregs'. | |
1472 | ||
1473 | On the Power/PowerPC return the address of the area on the stack | |
1474 | used to hold arguments. Under AIX, this includes the 8 word register | |
1475 | save area. Under V.4 this does not. */ | |
1476 | ||
1477 | struct rtx_def * | |
1478 | expand_builtin_saveregs (args) | |
1479 | tree args; | |
1480 | { | |
1481 | return virtual_incoming_args_rtx; | |
1482 | } | |
1483 | ||
5b5040b9 RK |
1484 | \f |
1485 | /* Generate a memory reference for expand_block_move, copying volatile, | |
1486 | and other bits from an original memory reference. */ | |
1487 | ||
1488 | static rtx | |
1489 | expand_block_move_mem (mode, addr, orig_mem) | |
1490 | enum machine_mode mode; | |
1491 | rtx addr; | |
1492 | rtx orig_mem; | |
1493 | { | |
1494 | rtx mem = gen_rtx (MEM, mode, addr); | |
b6c9286a MM |
1495 | |
1496 | RTX_UNCHANGING_P (mem) = RTX_UNCHANGING_P (orig_mem); | |
5b5040b9 RK |
1497 | MEM_VOLATILE_P (mem) = MEM_VOLATILE_P (orig_mem); |
1498 | MEM_IN_STRUCT_P (mem) = MEM_IN_STRUCT_P (orig_mem); | |
b6c9286a MM |
1499 | #ifdef MEM_UNALIGNED_P |
1500 | MEM_UNALIGNED_P (mem) = MEM_UNALIGNED_P (orig_mem); | |
1501 | #endif | |
5b5040b9 RK |
1502 | return mem; |
1503 | } | |
1504 | ||
7e69e155 MM |
1505 | /* Expand a block move operation, and return 1 if successful. Return 0 |
1506 | if we should let the compiler generate normal code. | |
1507 | ||
1508 | operands[0] is the destination | |
1509 | operands[1] is the source | |
1510 | operands[2] is the length | |
1511 | operands[3] is the alignment */ | |
1512 | ||
3933e0e1 MM |
1513 | #define MAX_MOVE_REG 4 |
1514 | ||
7e69e155 MM |
1515 | int |
1516 | expand_block_move (operands) | |
1517 | rtx operands[]; | |
1518 | { | |
b6c9286a MM |
1519 | rtx orig_dest = operands[0]; |
1520 | rtx orig_src = operands[1]; | |
7e69e155 | 1521 | rtx bytes_rtx = operands[2]; |
7e69e155 | 1522 | rtx align_rtx = operands[3]; |
3933e0e1 | 1523 | int constp = (GET_CODE (bytes_rtx) == CONST_INT); |
7e69e155 | 1524 | int align = XINT (align_rtx, 0); |
3933e0e1 MM |
1525 | int bytes; |
1526 | int offset; | |
1527 | int num_reg; | |
1528 | int i; | |
7e69e155 MM |
1529 | rtx src_reg; |
1530 | rtx dest_reg; | |
3933e0e1 MM |
1531 | rtx src_addr; |
1532 | rtx dest_addr; | |
7e69e155 | 1533 | rtx tmp_reg; |
3933e0e1 | 1534 | rtx stores[MAX_MOVE_REG]; |
7e69e155 MM |
1535 | int move_bytes; |
1536 | ||
3933e0e1 MM |
1537 | /* If this is not a fixed size move, just call memcpy */ |
1538 | if (!constp) | |
1539 | return 0; | |
1540 | ||
7e69e155 | 1541 | /* Anything to move? */ |
3933e0e1 MM |
1542 | bytes = INTVAL (bytes_rtx); |
1543 | if (bytes <= 0) | |
7e69e155 MM |
1544 | return 1; |
1545 | ||
3933e0e1 MM |
1546 | /* Don't support real large moves. If string instructions are not used, |
1547 | then don't generate more than 8 loads. */ | |
1548 | if (TARGET_STRING) | |
1549 | { | |
1cab3be1 | 1550 | if (bytes > 4*8) |
3933e0e1 MM |
1551 | return 0; |
1552 | } | |
1553 | else if (!STRICT_ALIGNMENT) | |
1554 | { | |
1555 | if (bytes > 4*8) | |
1556 | return 0; | |
1557 | } | |
1558 | else if (bytes > 8*align) | |
7e69e155 MM |
1559 | return 0; |
1560 | ||
1561 | /* Move the address into scratch registers. */ | |
b6c9286a MM |
1562 | dest_reg = copy_addr_to_reg (XEXP (orig_dest, 0)); |
1563 | src_reg = copy_addr_to_reg (XEXP (orig_src, 0)); | |
7e69e155 | 1564 | |
3933e0e1 | 1565 | if (TARGET_STRING) /* string instructions are available */ |
7e69e155 | 1566 | { |
3933e0e1 | 1567 | for ( ; bytes > 0; bytes -= move_bytes) |
7e69e155 | 1568 | { |
3933e0e1 MM |
1569 | if (bytes > 24 /* move up to 32 bytes at a time */ |
1570 | && !fixed_regs[5] | |
1571 | && !fixed_regs[6] | |
1572 | && !fixed_regs[7] | |
1573 | && !fixed_regs[8] | |
1574 | && !fixed_regs[9] | |
1575 | && !fixed_regs[10] | |
1576 | && !fixed_regs[11] | |
1577 | && !fixed_regs[12]) | |
1578 | { | |
1579 | move_bytes = (bytes > 32) ? 32 : bytes; | |
b6c9286a MM |
1580 | emit_insn (gen_movstrsi_8reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest), |
1581 | expand_block_move_mem (BLKmode, src_reg, orig_src), | |
3933e0e1 | 1582 | GEN_INT ((move_bytes == 32) ? 0 : move_bytes), |
4c64a852 | 1583 | align_rtx)); |
3933e0e1 MM |
1584 | } |
1585 | else if (bytes > 16 /* move up to 24 bytes at a time */ | |
1586 | && !fixed_regs[7] | |
1587 | && !fixed_regs[8] | |
1588 | && !fixed_regs[9] | |
1589 | && !fixed_regs[10] | |
1590 | && !fixed_regs[11] | |
1591 | && !fixed_regs[12]) | |
1592 | { | |
1593 | move_bytes = (bytes > 24) ? 24 : bytes; | |
b6c9286a MM |
1594 | emit_insn (gen_movstrsi_6reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest), |
1595 | expand_block_move_mem (BLKmode, src_reg, orig_src), | |
3933e0e1 | 1596 | GEN_INT (move_bytes), |
4c64a852 | 1597 | align_rtx)); |
3933e0e1 MM |
1598 | } |
1599 | else if (bytes > 8 /* move up to 16 bytes at a time */ | |
1600 | && !fixed_regs[9] | |
1601 | && !fixed_regs[10] | |
1602 | && !fixed_regs[11] | |
1603 | && !fixed_regs[12]) | |
1604 | { | |
1605 | move_bytes = (bytes > 16) ? 16 : bytes; | |
b6c9286a MM |
1606 | emit_insn (gen_movstrsi_4reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest), |
1607 | expand_block_move_mem (BLKmode, src_reg, orig_src), | |
3933e0e1 | 1608 | GEN_INT (move_bytes), |
4c64a852 | 1609 | align_rtx)); |
3933e0e1 | 1610 | } |
d679bebf | 1611 | else if (bytes > 4 && !TARGET_64BIT) |
3933e0e1 MM |
1612 | { /* move up to 8 bytes at a time */ |
1613 | move_bytes = (bytes > 8) ? 8 : bytes; | |
b6c9286a MM |
1614 | emit_insn (gen_movstrsi_2reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest), |
1615 | expand_block_move_mem (BLKmode, src_reg, orig_src), | |
3933e0e1 | 1616 | GEN_INT (move_bytes), |
4c64a852 | 1617 | align_rtx)); |
3933e0e1 MM |
1618 | } |
1619 | else if (bytes >= 4 && (align >= 4 || !STRICT_ALIGNMENT)) | |
1620 | { /* move 4 bytes */ | |
1621 | move_bytes = 4; | |
1622 | tmp_reg = gen_reg_rtx (SImode); | |
b6c9286a MM |
1623 | emit_move_insn (tmp_reg, expand_block_move_mem (SImode, src_reg, orig_src)); |
1624 | emit_move_insn (expand_block_move_mem (SImode, dest_reg, orig_dest), tmp_reg); | |
3933e0e1 MM |
1625 | } |
1626 | else if (bytes == 2 && (align >= 2 || !STRICT_ALIGNMENT)) | |
1627 | { /* move 2 bytes */ | |
1628 | move_bytes = 2; | |
1629 | tmp_reg = gen_reg_rtx (HImode); | |
b6c9286a MM |
1630 | emit_move_insn (tmp_reg, expand_block_move_mem (HImode, src_reg, orig_src)); |
1631 | emit_move_insn (expand_block_move_mem (HImode, dest_reg, orig_dest), tmp_reg); | |
3933e0e1 MM |
1632 | } |
1633 | else if (bytes == 1) /* move 1 byte */ | |
1634 | { | |
1635 | move_bytes = 1; | |
1636 | tmp_reg = gen_reg_rtx (QImode); | |
b6c9286a MM |
1637 | emit_move_insn (tmp_reg, expand_block_move_mem (QImode, src_reg, orig_src)); |
1638 | emit_move_insn (expand_block_move_mem (QImode, dest_reg, orig_dest), tmp_reg); | |
3933e0e1 MM |
1639 | } |
1640 | else | |
1641 | { /* move up to 4 bytes at a time */ | |
1642 | move_bytes = (bytes > 4) ? 4 : bytes; | |
b6c9286a MM |
1643 | emit_insn (gen_movstrsi_1reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest), |
1644 | expand_block_move_mem (BLKmode, src_reg, orig_src), | |
3933e0e1 | 1645 | GEN_INT (move_bytes), |
4c64a852 | 1646 | align_rtx)); |
3933e0e1 | 1647 | } |
4c64a852 | 1648 | |
015892ee RK |
1649 | if (bytes > move_bytes) |
1650 | { | |
1651 | emit_insn (gen_addsi3 (src_reg, src_reg, GEN_INT (move_bytes))); | |
1652 | emit_insn (gen_addsi3 (dest_reg, dest_reg, GEN_INT (move_bytes))); | |
1653 | } | |
4c64a852 | 1654 | } |
3933e0e1 MM |
1655 | } |
1656 | ||
1657 | else /* string instructions not available */ | |
1658 | { | |
1659 | num_reg = offset = 0; | |
1660 | for ( ; bytes > 0; (bytes -= move_bytes), (offset += move_bytes)) | |
7e69e155 | 1661 | { |
3933e0e1 MM |
1662 | /* Calculate the correct offset for src/dest */ |
1663 | if (offset == 0) | |
7e69e155 | 1664 | { |
3933e0e1 MM |
1665 | src_addr = src_reg; |
1666 | dest_addr = dest_reg; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | src_addr = gen_rtx (PLUS, Pmode, src_reg, GEN_INT (offset)); | |
1671 | dest_addr = gen_rtx (PLUS, Pmode, dest_reg, GEN_INT (offset)); | |
1672 | } | |
1673 | ||
1674 | /* Generate the appropriate load and store, saving the stores for later */ | |
b6c9286a MM |
1675 | if (bytes >= 8 && TARGET_64BIT && (align >= 8 || !STRICT_ALIGNMENT)) |
1676 | { | |
1677 | move_bytes = 8; | |
1678 | tmp_reg = gen_reg_rtx (DImode); | |
1679 | emit_insn (gen_movdi (tmp_reg, expand_block_move_mem (DImode, src_addr, orig_src))); | |
1680 | stores[ num_reg++ ] = gen_movdi (expand_block_move_mem (DImode, dest_addr, orig_dest), tmp_reg); | |
1681 | } | |
1682 | else if (bytes >= 4 && (align >= 4 || !STRICT_ALIGNMENT)) | |
3933e0e1 MM |
1683 | { |
1684 | move_bytes = 4; | |
1685 | tmp_reg = gen_reg_rtx (SImode); | |
b6c9286a MM |
1686 | emit_insn (gen_movsi (tmp_reg, expand_block_move_mem (SImode, src_addr, orig_src))); |
1687 | stores[ num_reg++ ] = gen_movsi (expand_block_move_mem (SImode, dest_addr, orig_dest), tmp_reg); | |
3933e0e1 MM |
1688 | } |
1689 | else if (bytes >= 2 && (align >= 2 || !STRICT_ALIGNMENT)) | |
1690 | { | |
1691 | move_bytes = 2; | |
1692 | tmp_reg = gen_reg_rtx (HImode); | |
b6c9286a MM |
1693 | emit_insn (gen_movsi (tmp_reg, expand_block_move_mem (HImode, src_addr, orig_src))); |
1694 | stores[ num_reg++ ] = gen_movhi (expand_block_move_mem (HImode, dest_addr, orig_dest), tmp_reg); | |
3933e0e1 MM |
1695 | } |
1696 | else | |
1697 | { | |
1698 | move_bytes = 1; | |
1699 | tmp_reg = gen_reg_rtx (QImode); | |
b6c9286a MM |
1700 | emit_insn (gen_movsi (tmp_reg, expand_block_move_mem (QImode, src_addr, orig_src))); |
1701 | stores[ num_reg++ ] = gen_movqi (expand_block_move_mem (QImode, dest_addr, orig_dest), tmp_reg); | |
3933e0e1 MM |
1702 | } |
1703 | ||
1704 | if (num_reg >= MAX_MOVE_REG) | |
1705 | { | |
1706 | for (i = 0; i < num_reg; i++) | |
1707 | emit_insn (stores[i]); | |
1708 | num_reg = 0; | |
7e69e155 MM |
1709 | } |
1710 | } | |
3933e0e1 | 1711 | |
b6c9286a MM |
1712 | for (i = 0; i < num_reg; i++) |
1713 | emit_insn (stores[i]); | |
7e69e155 MM |
1714 | } |
1715 | ||
1716 | return 1; | |
1717 | } | |
1718 | ||
9878760c RK |
1719 | \f |
1720 | /* Return 1 if OP is a load multiple operation. It is known to be a | |
1721 | PARALLEL and the first section will be tested. */ | |
1722 | ||
1723 | int | |
1724 | load_multiple_operation (op, mode) | |
1725 | rtx op; | |
1726 | enum machine_mode mode; | |
1727 | { | |
1728 | int count = XVECLEN (op, 0); | |
1729 | int dest_regno; | |
1730 | rtx src_addr; | |
1731 | int i; | |
1732 | ||
1733 | /* Perform a quick check so we don't blow up below. */ | |
1734 | if (count <= 1 | |
1735 | || GET_CODE (XVECEXP (op, 0, 0)) != SET | |
1736 | || GET_CODE (SET_DEST (XVECEXP (op, 0, 0))) != REG | |
1737 | || GET_CODE (SET_SRC (XVECEXP (op, 0, 0))) != MEM) | |
1738 | return 0; | |
1739 | ||
1740 | dest_regno = REGNO (SET_DEST (XVECEXP (op, 0, 0))); | |
1741 | src_addr = XEXP (SET_SRC (XVECEXP (op, 0, 0)), 0); | |
1742 | ||
1743 | for (i = 1; i < count; i++) | |
1744 | { | |
1745 | rtx elt = XVECEXP (op, 0, i); | |
1746 | ||
1747 | if (GET_CODE (elt) != SET | |
1748 | || GET_CODE (SET_DEST (elt)) != REG | |
1749 | || GET_MODE (SET_DEST (elt)) != SImode | |
1750 | || REGNO (SET_DEST (elt)) != dest_regno + i | |
1751 | || GET_CODE (SET_SRC (elt)) != MEM | |
1752 | || GET_MODE (SET_SRC (elt)) != SImode | |
1753 | || GET_CODE (XEXP (SET_SRC (elt), 0)) != PLUS | |
1754 | || ! rtx_equal_p (XEXP (XEXP (SET_SRC (elt), 0), 0), src_addr) | |
1755 | || GET_CODE (XEXP (XEXP (SET_SRC (elt), 0), 1)) != CONST_INT | |
1756 | || INTVAL (XEXP (XEXP (SET_SRC (elt), 0), 1)) != i * 4) | |
1757 | return 0; | |
1758 | } | |
1759 | ||
1760 | return 1; | |
1761 | } | |
1762 | ||
1763 | /* Similar, but tests for store multiple. Here, the second vector element | |
1764 | is a CLOBBER. It will be tested later. */ | |
1765 | ||
1766 | int | |
1767 | store_multiple_operation (op, mode) | |
1768 | rtx op; | |
1769 | enum machine_mode mode; | |
1770 | { | |
1771 | int count = XVECLEN (op, 0) - 1; | |
1772 | int src_regno; | |
1773 | rtx dest_addr; | |
1774 | int i; | |
1775 | ||
1776 | /* Perform a quick check so we don't blow up below. */ | |
1777 | if (count <= 1 | |
1778 | || GET_CODE (XVECEXP (op, 0, 0)) != SET | |
1779 | || GET_CODE (SET_DEST (XVECEXP (op, 0, 0))) != MEM | |
1780 | || GET_CODE (SET_SRC (XVECEXP (op, 0, 0))) != REG) | |
1781 | return 0; | |
1782 | ||
1783 | src_regno = REGNO (SET_SRC (XVECEXP (op, 0, 0))); | |
1784 | dest_addr = XEXP (SET_DEST (XVECEXP (op, 0, 0)), 0); | |
1785 | ||
1786 | for (i = 1; i < count; i++) | |
1787 | { | |
1788 | rtx elt = XVECEXP (op, 0, i + 1); | |
1789 | ||
1790 | if (GET_CODE (elt) != SET | |
1791 | || GET_CODE (SET_SRC (elt)) != REG | |
1792 | || GET_MODE (SET_SRC (elt)) != SImode | |
1793 | || REGNO (SET_SRC (elt)) != src_regno + i | |
1794 | || GET_CODE (SET_DEST (elt)) != MEM | |
1795 | || GET_MODE (SET_DEST (elt)) != SImode | |
1796 | || GET_CODE (XEXP (SET_DEST (elt), 0)) != PLUS | |
1797 | || ! rtx_equal_p (XEXP (XEXP (SET_DEST (elt), 0), 0), dest_addr) | |
1798 | || GET_CODE (XEXP (XEXP (SET_DEST (elt), 0), 1)) != CONST_INT | |
1799 | || INTVAL (XEXP (XEXP (SET_DEST (elt), 0), 1)) != i * 4) | |
1800 | return 0; | |
1801 | } | |
1802 | ||
1803 | return 1; | |
1804 | } | |
1805 | \f | |
1806 | /* Return 1 if OP is a comparison operation that is valid for a branch insn. | |
1807 | We only check the opcode against the mode of the CC value here. */ | |
1808 | ||
1809 | int | |
1810 | branch_comparison_operator (op, mode) | |
1811 | register rtx op; | |
1812 | enum machine_mode mode; | |
1813 | { | |
1814 | enum rtx_code code = GET_CODE (op); | |
1815 | enum machine_mode cc_mode; | |
1816 | ||
1817 | if (GET_RTX_CLASS (code) != '<') | |
1818 | return 0; | |
1819 | ||
1820 | cc_mode = GET_MODE (XEXP (op, 0)); | |
1821 | if (GET_MODE_CLASS (cc_mode) != MODE_CC) | |
1822 | return 0; | |
1823 | ||
1824 | if ((code == GT || code == LT || code == GE || code == LE) | |
1825 | && cc_mode == CCUNSmode) | |
1826 | return 0; | |
1827 | ||
1828 | if ((code == GTU || code == LTU || code == GEU || code == LEU) | |
1829 | && (cc_mode != CCUNSmode)) | |
1830 | return 0; | |
1831 | ||
1832 | return 1; | |
1833 | } | |
1834 | ||
1835 | /* Return 1 if OP is a comparison operation that is valid for an scc insn. | |
1836 | We check the opcode against the mode of the CC value and disallow EQ or | |
1837 | NE comparisons for integers. */ | |
1838 | ||
1839 | int | |
1840 | scc_comparison_operator (op, mode) | |
1841 | register rtx op; | |
1842 | enum machine_mode mode; | |
1843 | { | |
1844 | enum rtx_code code = GET_CODE (op); | |
1845 | enum machine_mode cc_mode; | |
1846 | ||
1847 | if (GET_MODE (op) != mode && mode != VOIDmode) | |
1848 | return 0; | |
1849 | ||
1850 | if (GET_RTX_CLASS (code) != '<') | |
1851 | return 0; | |
1852 | ||
1853 | cc_mode = GET_MODE (XEXP (op, 0)); | |
1854 | if (GET_MODE_CLASS (cc_mode) != MODE_CC) | |
1855 | return 0; | |
1856 | ||
1857 | if (code == NE && cc_mode != CCFPmode) | |
1858 | return 0; | |
1859 | ||
1860 | if ((code == GT || code == LT || code == GE || code == LE) | |
1861 | && cc_mode == CCUNSmode) | |
1862 | return 0; | |
1863 | ||
1864 | if ((code == GTU || code == LTU || code == GEU || code == LEU) | |
1865 | && (cc_mode != CCUNSmode)) | |
1866 | return 0; | |
1867 | ||
c5defebb RK |
1868 | if (cc_mode == CCEQmode && code != EQ && code != NE) |
1869 | return 0; | |
1870 | ||
9878760c RK |
1871 | return 1; |
1872 | } | |
1873 | \f | |
1874 | /* Return 1 if ANDOP is a mask that has no bits on that are not in the | |
1875 | mask required to convert the result of a rotate insn into a shift | |
1876 | left insn of SHIFTOP bits. Both are known to be CONST_INT. */ | |
1877 | ||
1878 | int | |
1879 | includes_lshift_p (shiftop, andop) | |
1880 | register rtx shiftop; | |
1881 | register rtx andop; | |
1882 | { | |
1883 | int shift_mask = (~0 << INTVAL (shiftop)); | |
1884 | ||
1885 | return (INTVAL (andop) & ~shift_mask) == 0; | |
1886 | } | |
1887 | ||
1888 | /* Similar, but for right shift. */ | |
1889 | ||
1890 | int | |
1891 | includes_rshift_p (shiftop, andop) | |
1892 | register rtx shiftop; | |
1893 | register rtx andop; | |
1894 | { | |
a7653a2c | 1895 | unsigned HOST_WIDE_INT shift_mask = ~(unsigned HOST_WIDE_INT) 0; |
9878760c RK |
1896 | |
1897 | shift_mask >>= INTVAL (shiftop); | |
1898 | ||
1899 | return (INTVAL (andop) & ~ shift_mask) == 0; | |
1900 | } | |
35068b43 RK |
1901 | |
1902 | /* Return 1 if REGNO (reg1) == REGNO (reg2) - 1 making them candidates | |
1903 | for lfq and stfq insns. | |
1904 | ||
1905 | Note reg1 and reg2 *must* be hard registers. To be sure we will | |
1906 | abort if we are passed pseudo registers. */ | |
1907 | ||
1908 | int | |
1909 | registers_ok_for_quad_peep (reg1, reg2) | |
1910 | rtx reg1, reg2; | |
1911 | { | |
1912 | /* We might have been passed a SUBREG. */ | |
1913 | if (GET_CODE (reg1) != REG || GET_CODE (reg2) != REG) | |
1914 | return 0; | |
1915 | ||
1916 | return (REGNO (reg1) == REGNO (reg2) - 1); | |
1917 | } | |
1918 | ||
1919 | /* Return 1 if addr1 and addr2 are suitable for lfq or stfq insn. addr1 and | |
1920 | addr2 must be in consecutive memory locations (addr2 == addr1 + 8). */ | |
1921 | ||
1922 | int | |
1923 | addrs_ok_for_quad_peep (addr1, addr2) | |
1924 | register rtx addr1; | |
1925 | register rtx addr2; | |
1926 | { | |
1927 | int reg1; | |
1928 | int offset1; | |
1929 | ||
1930 | /* Extract an offset (if used) from the first addr. */ | |
1931 | if (GET_CODE (addr1) == PLUS) | |
1932 | { | |
1933 | /* If not a REG, return zero. */ | |
1934 | if (GET_CODE (XEXP (addr1, 0)) != REG) | |
1935 | return 0; | |
1936 | else | |
1937 | { | |
1938 | reg1 = REGNO (XEXP (addr1, 0)); | |
1939 | /* The offset must be constant! */ | |
1940 | if (GET_CODE (XEXP (addr1, 1)) != CONST_INT) | |
1941 | return 0; | |
1942 | offset1 = INTVAL (XEXP (addr1, 1)); | |
1943 | } | |
1944 | } | |
1945 | else if (GET_CODE (addr1) != REG) | |
1946 | return 0; | |
1947 | else | |
1948 | { | |
1949 | reg1 = REGNO (addr1); | |
1950 | /* This was a simple (mem (reg)) expression. Offset is 0. */ | |
1951 | offset1 = 0; | |
1952 | } | |
1953 | ||
1954 | /* Make sure the second address is a (mem (plus (reg) (const_int). */ | |
1955 | if (GET_CODE (addr2) != PLUS) | |
1956 | return 0; | |
1957 | ||
1958 | if (GET_CODE (XEXP (addr2, 0)) != REG | |
1959 | || GET_CODE (XEXP (addr2, 1)) != CONST_INT) | |
1960 | return 0; | |
1961 | ||
1962 | if (reg1 != REGNO (XEXP (addr2, 0))) | |
1963 | return 0; | |
1964 | ||
1965 | /* The offset for the second addr must be 8 more than the first addr. */ | |
1966 | if (INTVAL (XEXP (addr2, 1)) != offset1 + 8) | |
1967 | return 0; | |
1968 | ||
1969 | /* All the tests passed. addr1 and addr2 are valid for lfq or stfq | |
1970 | instructions. */ | |
1971 | return 1; | |
1972 | } | |
9878760c RK |
1973 | \f |
1974 | /* Return the register class of a scratch register needed to copy IN into | |
1975 | or out of a register in CLASS in MODE. If it can be done directly, | |
1976 | NO_REGS is returned. */ | |
1977 | ||
1978 | enum reg_class | |
1979 | secondary_reload_class (class, mode, in) | |
1980 | enum reg_class class; | |
1981 | enum machine_mode mode; | |
1982 | rtx in; | |
1983 | { | |
1984 | int regno = true_regnum (in); | |
1985 | ||
1986 | if (regno >= FIRST_PSEUDO_REGISTER) | |
1987 | regno = -1; | |
1988 | ||
1989 | /* We can place anything into GENERAL_REGS and can put GENERAL_REGS | |
1990 | into anything. */ | |
1991 | if (class == GENERAL_REGS || class == BASE_REGS | |
1992 | || (regno >= 0 && INT_REGNO_P (regno))) | |
1993 | return NO_REGS; | |
1994 | ||
1995 | /* Constants, memory, and FP registers can go into FP registers. */ | |
1996 | if ((regno == -1 || FP_REGNO_P (regno)) | |
1997 | && (class == FLOAT_REGS || class == NON_SPECIAL_REGS)) | |
1998 | return NO_REGS; | |
1999 | ||
2000 | /* We can copy among the CR registers. */ | |
2001 | if ((class == CR_REGS || class == CR0_REGS) | |
2002 | && regno >= 0 && CR_REGNO_P (regno)) | |
2003 | return NO_REGS; | |
2004 | ||
2005 | /* Otherwise, we need GENERAL_REGS. */ | |
2006 | return GENERAL_REGS; | |
2007 | } | |
2008 | \f | |
2009 | /* Given a comparison operation, return the bit number in CCR to test. We | |
2010 | know this is a valid comparison. | |
2011 | ||
2012 | SCC_P is 1 if this is for an scc. That means that %D will have been | |
2013 | used instead of %C, so the bits will be in different places. | |
2014 | ||
b4ac57ab | 2015 | Return -1 if OP isn't a valid comparison for some reason. */ |
9878760c RK |
2016 | |
2017 | int | |
2018 | ccr_bit (op, scc_p) | |
2019 | register rtx op; | |
2020 | int scc_p; | |
2021 | { | |
2022 | enum rtx_code code = GET_CODE (op); | |
2023 | enum machine_mode cc_mode; | |
2024 | int cc_regnum; | |
2025 | int base_bit; | |
2026 | ||
2027 | if (GET_RTX_CLASS (code) != '<') | |
2028 | return -1; | |
2029 | ||
2030 | cc_mode = GET_MODE (XEXP (op, 0)); | |
2031 | cc_regnum = REGNO (XEXP (op, 0)); | |
2032 | base_bit = 4 * (cc_regnum - 68); | |
2033 | ||
c5defebb RK |
2034 | /* In CCEQmode cases we have made sure that the result is always in the |
2035 | third bit of the CR field. */ | |
2036 | ||
2037 | if (cc_mode == CCEQmode) | |
2038 | return base_bit + 3; | |
2039 | ||
9878760c RK |
2040 | switch (code) |
2041 | { | |
2042 | case NE: | |
2043 | return scc_p ? base_bit + 3 : base_bit + 2; | |
2044 | case EQ: | |
2045 | return base_bit + 2; | |
2046 | case GT: case GTU: | |
2047 | return base_bit + 1; | |
2048 | case LT: case LTU: | |
2049 | return base_bit; | |
2050 | ||
2051 | case GE: case GEU: | |
2052 | /* If floating-point, we will have done a cror to put the bit in the | |
2053 | unordered position. So test that bit. For integer, this is ! LT | |
2054 | unless this is an scc insn. */ | |
2055 | return cc_mode == CCFPmode || scc_p ? base_bit + 3 : base_bit; | |
2056 | ||
2057 | case LE: case LEU: | |
2058 | return cc_mode == CCFPmode || scc_p ? base_bit + 3 : base_bit + 1; | |
2059 | ||
2060 | default: | |
2061 | abort (); | |
2062 | } | |
2063 | } | |
1ff7789b MM |
2064 | \f |
2065 | /* Return the GOT register, creating it if needed. */ | |
2066 | ||
2067 | struct rtx_def * | |
2068 | rs6000_got_register (value) | |
2069 | rtx value; | |
2070 | { | |
da39823a | 2071 | if (!current_function_uses_pic_offset_table || !pic_offset_table_rtx) |
1ff7789b MM |
2072 | { |
2073 | if (reload_in_progress || reload_completed) | |
2074 | fatal_insn ("internal error -- needed new GOT register during reload phase to load:", value); | |
2075 | ||
2076 | current_function_uses_pic_offset_table = 1; | |
2077 | pic_offset_table_rtx = gen_rtx (REG, Pmode, GOT_TOC_REGNUM); | |
2078 | } | |
2079 | ||
2080 | return pic_offset_table_rtx; | |
2081 | } | |
2082 | ||
2083 | \f | |
2084 | /* Replace all occurances of register FROM with an new pseduo register in an insn X. | |
2085 | Store the pseudo register used in REG. | |
2086 | This is only safe during FINALIZE_PIC, since the registers haven't been setup | |
2087 | yet. */ | |
2088 | ||
2089 | static rtx | |
2090 | rs6000_replace_regno (x, from, reg) | |
2091 | rtx x; | |
2092 | int from; | |
2093 | rtx *reg; | |
2094 | { | |
2095 | register int i, j; | |
2096 | register char *fmt; | |
2097 | ||
2098 | /* Allow this function to make replacements in EXPR_LISTs. */ | |
2099 | if (!x) | |
2100 | return x; | |
2101 | ||
2102 | switch (GET_CODE (x)) | |
2103 | { | |
2104 | case SCRATCH: | |
2105 | case PC: | |
2106 | case CC0: | |
2107 | case CONST_INT: | |
2108 | case CONST_DOUBLE: | |
2109 | case CONST: | |
2110 | case SYMBOL_REF: | |
2111 | case LABEL_REF: | |
2112 | return x; | |
2113 | ||
2114 | case REG: | |
2115 | if (REGNO (x) == from) | |
2116 | { | |
2117 | if (! *reg) | |
84f414bc | 2118 | *reg = pic_offset_table_rtx = gen_reg_rtx (Pmode); |
1ff7789b MM |
2119 | |
2120 | return *reg; | |
2121 | } | |
2122 | ||
2123 | return x; | |
2124 | } | |
2125 | ||
2126 | fmt = GET_RTX_FORMAT (GET_CODE (x)); | |
2127 | for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0; i--) | |
2128 | { | |
2129 | if (fmt[i] == 'e') | |
2130 | XEXP (x, i) = rs6000_replace_regno (XEXP (x, i), from, reg); | |
2131 | else if (fmt[i] == 'E') | |
2132 | for (j = XVECLEN (x, i) - 1; j >= 0; j--) | |
2133 | XVECEXP (x, i, j) = rs6000_replace_regno (XVECEXP (x, i, j), from, reg); | |
2134 | } | |
2135 | ||
2136 | return x; | |
2137 | } | |
2138 | ||
d266da75 MM |
2139 | \f |
2140 | /* By generating position-independent code, when two different | |
2141 | programs (A and B) share a common library (libC.a), the text of | |
2142 | the library can be shared whether or not the library is linked at | |
2143 | the same address for both programs. In some of these | |
2144 | environments, position-independent code requires not only the use | |
2145 | of different addressing modes, but also special code to enable the | |
2146 | use of these addressing modes. | |
2147 | ||
2148 | The `FINALIZE_PIC' macro serves as a hook to emit these special | |
2149 | codes once the function is being compiled into assembly code, but | |
2150 | not before. (It is not done before, because in the case of | |
2151 | compiling an inline function, it would lead to multiple PIC | |
2152 | prologues being included in functions which used inline functions | |
2153 | and were compiled to assembly language.) */ | |
2154 | ||
2155 | void | |
2156 | rs6000_finalize_pic () | |
2157 | { | |
30ea98f1 MM |
2158 | /* Loop through all of the insns, replacing the special GOT_TOC_REGNUM |
2159 | with an appropriate pseduo register. If we find we need GOT/TOC, | |
2160 | add the appropriate init code. */ | |
2161 | if (flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS)) | |
d266da75 | 2162 | { |
30ea98f1 MM |
2163 | rtx insn = get_insns (); |
2164 | rtx reg = NULL_RTX; | |
2165 | rtx first_insn; | |
d266da75 | 2166 | |
30ea98f1 MM |
2167 | if (GET_CODE (insn) == NOTE) |
2168 | insn = next_nonnote_insn (insn); | |
d266da75 | 2169 | |
30ea98f1 MM |
2170 | first_insn = insn; |
2171 | for ( ; insn != NULL_RTX; insn = NEXT_INSN (insn)) | |
2172 | { | |
2173 | if (GET_RTX_CLASS (GET_CODE (insn)) == 'i') | |
1ff7789b | 2174 | { |
30ea98f1 MM |
2175 | PATTERN (insn) = rs6000_replace_regno (PATTERN (insn), |
2176 | GOT_TOC_REGNUM, | |
2177 | ®); | |
2178 | ||
2179 | if (REG_NOTES (insn)) | |
2180 | REG_NOTES (insn) = rs6000_replace_regno (REG_NOTES (insn), | |
1ff7789b MM |
2181 | GOT_TOC_REGNUM, |
2182 | ®); | |
1ff7789b | 2183 | } |
30ea98f1 | 2184 | } |
1ff7789b | 2185 | |
30ea98f1 MM |
2186 | if (reg) |
2187 | { | |
2188 | rtx init = gen_init_v4_pic (reg); | |
2189 | emit_insn_before (init, first_insn); | |
d266da75 MM |
2190 | } |
2191 | } | |
2192 | } | |
2193 | ||
30ea98f1 MM |
2194 | \f |
2195 | /* Search for any occurrance of the GOT_TOC register marker that should | |
2196 | have been eliminated, but may have crept back in. */ | |
2197 | ||
2198 | void | |
2199 | rs6000_reorg (insn) | |
2200 | rtx insn; | |
2201 | { | |
2202 | if (flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS)) | |
2203 | { | |
2204 | rtx got_reg = gen_rtx (REG, Pmode, GOT_TOC_REGNUM); | |
2205 | for ( ; insn != NULL_RTX; insn = NEXT_INSN (insn)) | |
2206 | if (GET_RTX_CLASS (GET_CODE (insn)) == 'i' | |
2207 | && reg_mentioned_p (got_reg, PATTERN (insn))) | |
2208 | fatal_insn ("GOT/TOC register marker not removed:", PATTERN (insn)); | |
2209 | } | |
2210 | } | |
2211 | ||
a7df97e6 MM |
2212 | \f |
2213 | /* Define the structure for the machine field in struct function. */ | |
2214 | struct machine_function | |
2215 | { | |
2216 | int sysv_varargs_p; | |
2217 | int save_toc_p; | |
2218 | int fpmem_size; | |
2219 | int fpmem_offset; | |
2220 | }; | |
2221 | ||
2222 | /* Functions to save and restore rs6000_fpmem_size. | |
2223 | These will be called, via pointer variables, | |
2224 | from push_function_context and pop_function_context. */ | |
2225 | ||
2226 | void | |
2227 | rs6000_save_machine_status (p) | |
2228 | struct function *p; | |
2229 | { | |
2230 | struct machine_function *machine = | |
2231 | (struct machine_function *) xmalloc (sizeof (struct machine_function)); | |
2232 | ||
2233 | p->machine = machine; | |
2234 | machine->sysv_varargs_p = rs6000_sysv_varargs_p; | |
a7df97e6 MM |
2235 | machine->fpmem_size = rs6000_fpmem_size; |
2236 | machine->fpmem_offset = rs6000_fpmem_offset; | |
2237 | } | |
2238 | ||
2239 | void | |
2240 | rs6000_restore_machine_status (p) | |
2241 | struct function *p; | |
2242 | { | |
2243 | struct machine_function *machine = p->machine; | |
2244 | ||
2245 | rs6000_sysv_varargs_p = machine->sysv_varargs_p; | |
a7df97e6 MM |
2246 | rs6000_fpmem_size = machine->fpmem_size; |
2247 | rs6000_fpmem_offset = machine->fpmem_offset; | |
2248 | ||
2249 | free (machine); | |
2250 | p->machine = (struct machine_function *)0; | |
2251 | } | |
2252 | ||
2253 | /* Do anything needed before RTL is emitted for each function. */ | |
2254 | ||
2255 | void | |
2256 | rs6000_init_expanders () | |
2257 | { | |
2258 | /* Reset varargs and save TOC indicator */ | |
2259 | rs6000_sysv_varargs_p = 0; | |
a7df97e6 MM |
2260 | rs6000_fpmem_size = 0; |
2261 | rs6000_fpmem_offset = 0; | |
2262 | pic_offset_table_rtx = (rtx)0; | |
2263 | ||
2264 | /* Arrange to save and restore machine status around nested functions. */ | |
2265 | save_machine_status = rs6000_save_machine_status; | |
2266 | restore_machine_status = rs6000_restore_machine_status; | |
2267 | } | |
2268 | ||
9878760c RK |
2269 | \f |
2270 | /* Print an operand. Recognize special options, documented below. */ | |
2271 | ||
d9407988 MM |
2272 | #ifdef TARGET_SDATA |
2273 | #define SMALL_DATA_RELOC ((rs6000_sdata == SDATA_EABI) ? "sda21" : "sdarel") | |
ba5e43aa MM |
2274 | #else |
2275 | #define SMALL_DATA_RELOC "sda21" | |
2276 | #endif | |
2277 | ||
9878760c RK |
2278 | void |
2279 | print_operand (file, x, code) | |
2280 | FILE *file; | |
2281 | rtx x; | |
2282 | char code; | |
2283 | { | |
2284 | int i; | |
2285 | int val; | |
2286 | ||
2287 | /* These macros test for integers and extract the low-order bits. */ | |
2288 | #define INT_P(X) \ | |
2289 | ((GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE) \ | |
2290 | && GET_MODE (X) == VOIDmode) | |
2291 | ||
2292 | #define INT_LOWPART(X) \ | |
2293 | (GET_CODE (X) == CONST_INT ? INTVAL (X) : CONST_DOUBLE_LOW (X)) | |
2294 | ||
2295 | switch (code) | |
2296 | { | |
a8b3aeda | 2297 | case '.': |
a85d226b RK |
2298 | /* Write out an instruction after the call which may be replaced |
2299 | with glue code by the loader. This depends on the AIX version. */ | |
2300 | asm_fprintf (file, RS6000_CALL_GLUE); | |
a8b3aeda RK |
2301 | return; |
2302 | ||
cfaaaf2e RK |
2303 | case '*': |
2304 | /* Write the register number of the TOC register. */ | |
4697a36c | 2305 | fputs (TARGET_MINIMAL_TOC ? reg_names[30] : reg_names[2], file); |
cfaaaf2e RK |
2306 | return; |
2307 | ||
c81bebd7 MM |
2308 | case '$': |
2309 | /* Write out either a '.' or '$' for the current location, depending | |
2310 | on whether this is Solaris or not. */ | |
2311 | putc ((DEFAULT_ABI == ABI_SOLARIS) ? '.' : '$', file); | |
2312 | return; | |
2313 | ||
9854d9ed RK |
2314 | case 'A': |
2315 | /* If X is a constant integer whose low-order 5 bits are zero, | |
2316 | write 'l'. Otherwise, write 'r'. This is a kludge to fix a bug | |
76229ac8 | 2317 | in the AIX assembler where "sri" with a zero shift count |
9854d9ed RK |
2318 | write a trash instruction. */ |
2319 | if (GET_CODE (x) == CONST_INT && (INTVAL (x) & 31) == 0) | |
76229ac8 | 2320 | putc ('l', file); |
9854d9ed | 2321 | else |
76229ac8 | 2322 | putc ('r', file); |
9854d9ed RK |
2323 | return; |
2324 | ||
2325 | case 'b': | |
2326 | /* Low-order 16 bits of constant, unsigned. */ | |
cad12a8d | 2327 | if (! INT_P (x)) |
9854d9ed | 2328 | output_operand_lossage ("invalid %%b value"); |
cad12a8d | 2329 | |
9854d9ed | 2330 | fprintf (file, "%d", INT_LOWPART (x) & 0xffff); |
cad12a8d RK |
2331 | return; |
2332 | ||
9854d9ed RK |
2333 | case 'C': |
2334 | /* This is an optional cror needed for LE or GE floating-point | |
2335 | comparisons. Otherwise write nothing. */ | |
2336 | if ((GET_CODE (x) == LE || GET_CODE (x) == GE) | |
2337 | && GET_MODE (XEXP (x, 0)) == CCFPmode) | |
2338 | { | |
2339 | int base_bit = 4 * (REGNO (XEXP (x, 0)) - 68); | |
2340 | ||
2341 | fprintf (file, "cror %d,%d,%d\n\t", base_bit + 3, | |
2342 | base_bit + 2, base_bit + (GET_CODE (x) == GE)); | |
2343 | } | |
2344 | return; | |
2345 | ||
2346 | case 'D': | |
2347 | /* Similar, except that this is for an scc, so we must be able to | |
2348 | encode the test in a single bit that is one. We do the above | |
2349 | for any LE, GE, GEU, or LEU and invert the bit for NE. */ | |
2350 | if (GET_CODE (x) == LE || GET_CODE (x) == GE | |
2351 | || GET_CODE (x) == LEU || GET_CODE (x) == GEU) | |
2352 | { | |
2353 | int base_bit = 4 * (REGNO (XEXP (x, 0)) - 68); | |
2354 | ||
2355 | fprintf (file, "cror %d,%d,%d\n\t", base_bit + 3, | |
2356 | base_bit + 2, | |
2357 | base_bit + (GET_CODE (x) == GE || GET_CODE (x) == GEU)); | |
2358 | } | |
2359 | ||
2360 | else if (GET_CODE (x) == NE) | |
2361 | { | |
2362 | int base_bit = 4 * (REGNO (XEXP (x, 0)) - 68); | |
2363 | ||
2364 | fprintf (file, "crnor %d,%d,%d\n\t", base_bit + 3, | |
2365 | base_bit + 2, base_bit + 2); | |
2366 | } | |
2367 | return; | |
2368 | ||
2369 | case 'E': | |
2370 | /* X is a CR register. Print the number of the third bit of the CR */ | |
2371 | if (GET_CODE (x) != REG || ! CR_REGNO_P (REGNO (x))) | |
2372 | output_operand_lossage ("invalid %%E value"); | |
2373 | ||
2374 | fprintf(file, "%d", 4 * (REGNO (x) - 68) + 3); | |
a85d226b | 2375 | return; |
9854d9ed RK |
2376 | |
2377 | case 'f': | |
2378 | /* X is a CR register. Print the shift count needed to move it | |
2379 | to the high-order four bits. */ | |
2380 | if (GET_CODE (x) != REG || ! CR_REGNO_P (REGNO (x))) | |
2381 | output_operand_lossage ("invalid %%f value"); | |
2382 | else | |
2383 | fprintf (file, "%d", 4 * (REGNO (x) - 68)); | |
2384 | return; | |
2385 | ||
2386 | case 'F': | |
2387 | /* Similar, but print the count for the rotate in the opposite | |
2388 | direction. */ | |
2389 | if (GET_CODE (x) != REG || ! CR_REGNO_P (REGNO (x))) | |
2390 | output_operand_lossage ("invalid %%F value"); | |
2391 | else | |
2392 | fprintf (file, "%d", 32 - 4 * (REGNO (x) - 68)); | |
2393 | return; | |
2394 | ||
2395 | case 'G': | |
2396 | /* X is a constant integer. If it is negative, print "m", | |
2397 | otherwise print "z". This is to make a aze or ame insn. */ | |
2398 | if (GET_CODE (x) != CONST_INT) | |
2399 | output_operand_lossage ("invalid %%G value"); | |
2400 | else if (INTVAL (x) >= 0) | |
76229ac8 | 2401 | putc ('z', file); |
9854d9ed | 2402 | else |
76229ac8 | 2403 | putc ('m', file); |
9854d9ed RK |
2404 | return; |
2405 | ||
9878760c | 2406 | case 'h': |
df3d94ed RK |
2407 | /* If constant, output low-order five bits. Otherwise, |
2408 | write normally. */ | |
9878760c RK |
2409 | if (INT_P (x)) |
2410 | fprintf (file, "%d", INT_LOWPART (x) & 31); | |
2411 | else | |
2412 | print_operand (file, x, 0); | |
2413 | return; | |
2414 | ||
64305719 DE |
2415 | case 'H': |
2416 | /* If constant, output low-order six bits. Otherwise, | |
2417 | write normally. */ | |
2418 | if (INT_P (x)) | |
2419 | fprintf (file, "%d", INT_LOWPART (x) & 63); | |
2420 | else | |
2421 | print_operand (file, x, 0); | |
2422 | return; | |
2423 | ||
9854d9ed RK |
2424 | case 'I': |
2425 | /* Print `i' if this is a constant, else nothing. */ | |
9878760c | 2426 | if (INT_P (x)) |
76229ac8 | 2427 | putc ('i', file); |
9878760c RK |
2428 | return; |
2429 | ||
9854d9ed RK |
2430 | case 'j': |
2431 | /* Write the bit number in CCR for jump. */ | |
2432 | i = ccr_bit (x, 0); | |
2433 | if (i == -1) | |
2434 | output_operand_lossage ("invalid %%j code"); | |
9878760c | 2435 | else |
9854d9ed | 2436 | fprintf (file, "%d", i); |
9878760c RK |
2437 | return; |
2438 | ||
9854d9ed RK |
2439 | case 'J': |
2440 | /* Similar, but add one for shift count in rlinm for scc and pass | |
2441 | scc flag to `ccr_bit'. */ | |
2442 | i = ccr_bit (x, 1); | |
2443 | if (i == -1) | |
2444 | output_operand_lossage ("invalid %%J code"); | |
2445 | else | |
a0466a68 RK |
2446 | /* If we want bit 31, write a shift count of zero, not 32. */ |
2447 | fprintf (file, "%d", i == 31 ? 0 : i + 1); | |
9878760c RK |
2448 | return; |
2449 | ||
9854d9ed RK |
2450 | case 'k': |
2451 | /* X must be a constant. Write the 1's complement of the | |
2452 | constant. */ | |
9878760c | 2453 | if (! INT_P (x)) |
9854d9ed | 2454 | output_operand_lossage ("invalid %%k value"); |
9878760c | 2455 | |
9854d9ed | 2456 | fprintf (file, "%d", ~ INT_LOWPART (x)); |
9878760c RK |
2457 | return; |
2458 | ||
9854d9ed RK |
2459 | case 'L': |
2460 | /* Write second word of DImode or DFmode reference. Works on register | |
2461 | or non-indexed memory only. */ | |
2462 | if (GET_CODE (x) == REG) | |
5ebfb2ba | 2463 | fprintf (file, "%s", reg_names[REGNO (x) + 1]); |
9854d9ed RK |
2464 | else if (GET_CODE (x) == MEM) |
2465 | { | |
2466 | /* Handle possible auto-increment. Since it is pre-increment and | |
2467 | we have already done it, we can just use an offset of four. */ | |
2468 | if (GET_CODE (XEXP (x, 0)) == PRE_INC | |
2469 | || GET_CODE (XEXP (x, 0)) == PRE_DEC) | |
a54d04b7 | 2470 | output_address (plus_constant (XEXP (XEXP (x, 0), 0), 4)); |
9854d9ed | 2471 | else |
a54d04b7 | 2472 | output_address (plus_constant (XEXP (x, 0), 4)); |
ba5e43aa MM |
2473 | if (small_data_operand (x, GET_MODE (x))) |
2474 | fprintf (file, "@%s(%s)", SMALL_DATA_RELOC, reg_names[0]); | |
9854d9ed | 2475 | } |
9878760c | 2476 | return; |
9854d9ed | 2477 | |
9878760c RK |
2478 | case 'm': |
2479 | /* MB value for a mask operand. */ | |
2480 | if (! mask_operand (x, VOIDmode)) | |
2481 | output_operand_lossage ("invalid %%m value"); | |
2482 | ||
2483 | val = INT_LOWPART (x); | |
2484 | ||
2485 | /* If the high bit is set and the low bit is not, the value is zero. | |
2486 | If the high bit is zero, the value is the first 1 bit we find from | |
2487 | the left. */ | |
2488 | if (val < 0 && (val & 1) == 0) | |
2489 | { | |
19d2d16f | 2490 | putc ('0', file); |
9878760c RK |
2491 | return; |
2492 | } | |
2493 | else if (val >= 0) | |
2494 | { | |
2495 | for (i = 1; i < 32; i++) | |
2496 | if ((val <<= 1) < 0) | |
2497 | break; | |
2498 | fprintf (file, "%d", i); | |
2499 | return; | |
2500 | } | |
2501 | ||
2502 | /* Otherwise, look for the first 0 bit from the right. The result is its | |
2503 | number plus 1. We know the low-order bit is one. */ | |
2504 | for (i = 0; i < 32; i++) | |
2505 | if (((val >>= 1) & 1) == 0) | |
2506 | break; | |
2507 | ||
2508 | /* If we ended in ...01, I would be 0. The correct value is 31, so | |
2509 | we want 31 - i. */ | |
2510 | fprintf (file, "%d", 31 - i); | |
2511 | return; | |
2512 | ||
2513 | case 'M': | |
2514 | /* ME value for a mask operand. */ | |
2515 | if (! mask_operand (x, VOIDmode)) | |
2516 | output_operand_lossage ("invalid %%m value"); | |
2517 | ||
2518 | val = INT_LOWPART (x); | |
2519 | ||
2520 | /* If the low bit is set and the high bit is not, the value is 31. | |
2521 | If the low bit is zero, the value is the first 1 bit we find from | |
2522 | the right. */ | |
2523 | if ((val & 1) && val >= 0) | |
2524 | { | |
76229ac8 | 2525 | fputs ("31", file); |
9878760c RK |
2526 | return; |
2527 | } | |
2528 | else if ((val & 1) == 0) | |
2529 | { | |
2530 | for (i = 0; i < 32; i++) | |
2531 | if ((val >>= 1) & 1) | |
2532 | break; | |
2533 | ||
2534 | /* If we had ....10, I would be 0. The result should be | |
2535 | 30, so we need 30 - i. */ | |
2536 | fprintf (file, "%d", 30 - i); | |
2537 | return; | |
2538 | } | |
2539 | ||
2540 | /* Otherwise, look for the first 0 bit from the left. The result is its | |
2541 | number minus 1. We know the high-order bit is one. */ | |
2542 | for (i = 0; i < 32; i++) | |
2543 | if ((val <<= 1) >= 0) | |
2544 | break; | |
2545 | ||
2546 | fprintf (file, "%d", i); | |
2547 | return; | |
2548 | ||
9878760c RK |
2549 | case 'N': |
2550 | /* Write the number of elements in the vector times 4. */ | |
2551 | if (GET_CODE (x) != PARALLEL) | |
2552 | output_operand_lossage ("invalid %%N value"); | |
2553 | ||
2554 | fprintf (file, "%d", XVECLEN (x, 0) * 4); | |
2555 | return; | |
2556 | ||
2557 | case 'O': | |
2558 | /* Similar, but subtract 1 first. */ | |
2559 | if (GET_CODE (x) != PARALLEL) | |
2560 | output_operand_lossage ("invalid %%N value"); | |
2561 | ||
2562 | fprintf (file, "%d", (XVECLEN (x, 0) - 1) * 4); | |
2563 | return; | |
2564 | ||
9854d9ed RK |
2565 | case 'p': |
2566 | /* X is a CONST_INT that is a power of two. Output the logarithm. */ | |
2567 | if (! INT_P (x) | |
2568 | || (i = exact_log2 (INT_LOWPART (x))) < 0) | |
2569 | output_operand_lossage ("invalid %%p value"); | |
2570 | ||
2571 | fprintf (file, "%d", i); | |
2572 | return; | |
2573 | ||
9878760c RK |
2574 | case 'P': |
2575 | /* The operand must be an indirect memory reference. The result | |
2576 | is the register number. */ | |
2577 | if (GET_CODE (x) != MEM || GET_CODE (XEXP (x, 0)) != REG | |
2578 | || REGNO (XEXP (x, 0)) >= 32) | |
2579 | output_operand_lossage ("invalid %%P value"); | |
2580 | ||
2581 | fprintf (file, "%d", REGNO (XEXP (x, 0))); | |
2582 | return; | |
2583 | ||
9854d9ed RK |
2584 | case 'R': |
2585 | /* X is a CR register. Print the mask for `mtcrf'. */ | |
2586 | if (GET_CODE (x) != REG || ! CR_REGNO_P (REGNO (x))) | |
2587 | output_operand_lossage ("invalid %%R value"); | |
2588 | else | |
2589 | fprintf (file, "%d", 128 >> (REGNO (x) - 68)); | |
9878760c | 2590 | return; |
9854d9ed RK |
2591 | |
2592 | case 's': | |
2593 | /* Low 5 bits of 32 - value */ | |
2594 | if (! INT_P (x)) | |
2595 | output_operand_lossage ("invalid %%s value"); | |
2596 | ||
2597 | fprintf (file, "%d", (32 - INT_LOWPART (x)) & 31); | |
9878760c | 2598 | return; |
9854d9ed | 2599 | |
9878760c RK |
2600 | case 't': |
2601 | /* Write 12 if this jump operation will branch if true, 4 otherwise. | |
2602 | All floating-point operations except NE branch true and integer | |
2603 | EQ, LT, GT, LTU and GTU also branch true. */ | |
2604 | if (GET_RTX_CLASS (GET_CODE (x)) != '<') | |
2605 | output_operand_lossage ("invalid %%t value"); | |
2606 | ||
2607 | else if ((GET_MODE (XEXP (x, 0)) == CCFPmode | |
2608 | && GET_CODE (x) != NE) | |
2609 | || GET_CODE (x) == EQ | |
2610 | || GET_CODE (x) == LT || GET_CODE (x) == GT | |
2611 | || GET_CODE (x) == LTU || GET_CODE (x) == GTU) | |
76229ac8 | 2612 | fputs ("12", file); |
9878760c | 2613 | else |
76229ac8 | 2614 | putc ('4', file); |
9878760c RK |
2615 | return; |
2616 | ||
2617 | case 'T': | |
2618 | /* Opposite of 't': write 4 if this jump operation will branch if true, | |
2619 | 12 otherwise. */ | |
2620 | if (GET_RTX_CLASS (GET_CODE (x)) != '<') | |
2621 | output_operand_lossage ("invalid %%t value"); | |
2622 | ||
2623 | else if ((GET_MODE (XEXP (x, 0)) == CCFPmode | |
2624 | && GET_CODE (x) != NE) | |
2625 | || GET_CODE (x) == EQ | |
2626 | || GET_CODE (x) == LT || GET_CODE (x) == GT | |
2627 | || GET_CODE (x) == LTU || GET_CODE (x) == GTU) | |
76229ac8 | 2628 | putc ('4', file); |
9878760c | 2629 | else |
76229ac8 | 2630 | fputs ("12", file); |
9878760c RK |
2631 | return; |
2632 | ||
9854d9ed | 2633 | case 'u': |
802a0058 | 2634 | /* High-order 16 bits of constant for use in unsigned operand. */ |
9854d9ed RK |
2635 | if (! INT_P (x)) |
2636 | output_operand_lossage ("invalid %%u value"); | |
9878760c | 2637 | |
76229ac8 | 2638 | fprintf (file, "0x%x", (INT_LOWPART (x) >> 16) & 0xffff); |
9878760c RK |
2639 | return; |
2640 | ||
802a0058 MM |
2641 | case 'v': |
2642 | /* High-order 16 bits of constant for use in signed operand. */ | |
2643 | if (! INT_P (x)) | |
2644 | output_operand_lossage ("invalid %%v value"); | |
2645 | ||
2646 | { | |
2647 | int value = (INT_LOWPART (x) >> 16) & 0xffff; | |
2648 | ||
2649 | /* Solaris assembler doesn't like lis 0,0x80000 */ | |
2650 | if (DEFAULT_ABI == ABI_SOLARIS && (value & 0x8000) != 0) | |
2651 | fprintf (file, "%d", value | (~0 << 16)); | |
2652 | else | |
2653 | fprintf (file, "0x%x", value); | |
2654 | return; | |
2655 | } | |
2656 | ||
9854d9ed RK |
2657 | case 'U': |
2658 | /* Print `u' if this has an auto-increment or auto-decrement. */ | |
2659 | if (GET_CODE (x) == MEM | |
2660 | && (GET_CODE (XEXP (x, 0)) == PRE_INC | |
2661 | || GET_CODE (XEXP (x, 0)) == PRE_DEC)) | |
76229ac8 | 2662 | putc ('u', file); |
9854d9ed | 2663 | return; |
9878760c | 2664 | |
9854d9ed RK |
2665 | case 'w': |
2666 | /* If constant, low-order 16 bits of constant, signed. Otherwise, write | |
2667 | normally. */ | |
2668 | if (INT_P (x)) | |
2669 | fprintf (file, "%d", | |
2670 | (INT_LOWPART (x) & 0xffff) - 2 * (INT_LOWPART (x) & 0x8000)); | |
2671 | else | |
2672 | print_operand (file, x, 0); | |
9878760c RK |
2673 | return; |
2674 | ||
9854d9ed RK |
2675 | case 'W': |
2676 | /* If constant, low-order 16 bits of constant, unsigned. | |
2677 | Otherwise, write normally. */ | |
2678 | if (INT_P (x)) | |
2679 | fprintf (file, "%d", INT_LOWPART (x) & 0xffff); | |
2680 | else | |
2681 | print_operand (file, x, 0); | |
2682 | return; | |
9878760c | 2683 | |
9854d9ed RK |
2684 | case 'X': |
2685 | if (GET_CODE (x) == MEM | |
2686 | && LEGITIMATE_INDEXED_ADDRESS_P (XEXP (x, 0))) | |
76229ac8 | 2687 | putc ('x', file); |
9854d9ed | 2688 | return; |
9878760c | 2689 | |
9854d9ed RK |
2690 | case 'Y': |
2691 | /* Like 'L', for third word of TImode */ | |
2692 | if (GET_CODE (x) == REG) | |
5ebfb2ba | 2693 | fprintf (file, "%s", reg_names[REGNO (x) + 2]); |
9854d9ed | 2694 | else if (GET_CODE (x) == MEM) |
9878760c | 2695 | { |
9854d9ed RK |
2696 | if (GET_CODE (XEXP (x, 0)) == PRE_INC |
2697 | || GET_CODE (XEXP (x, 0)) == PRE_DEC) | |
a54d04b7 | 2698 | output_address (plus_constant (XEXP (XEXP (x, 0), 0), 8)); |
9854d9ed | 2699 | else |
a54d04b7 | 2700 | output_address (plus_constant (XEXP (x, 0), 8)); |
ba5e43aa MM |
2701 | if (small_data_operand (x, GET_MODE (x))) |
2702 | fprintf (file, "@%s(%s)", SMALL_DATA_RELOC, reg_names[0]); | |
9878760c RK |
2703 | } |
2704 | return; | |
9854d9ed | 2705 | |
9878760c | 2706 | case 'z': |
b4ac57ab RS |
2707 | /* X is a SYMBOL_REF. Write out the name preceded by a |
2708 | period and without any trailing data in brackets. Used for function | |
4d30c363 MM |
2709 | names. If we are configured for System V (or the embedded ABI) on |
2710 | the PowerPC, do not emit the period, since those systems do not use | |
2711 | TOCs and the like. */ | |
9878760c RK |
2712 | if (GET_CODE (x) != SYMBOL_REF) |
2713 | abort (); | |
2714 | ||
b6c9286a MM |
2715 | if (XSTR (x, 0)[0] != '.') |
2716 | { | |
2717 | switch (DEFAULT_ABI) | |
2718 | { | |
2719 | default: | |
2720 | abort (); | |
2721 | ||
2722 | case ABI_AIX: | |
2723 | putc ('.', file); | |
2724 | break; | |
2725 | ||
2726 | case ABI_V4: | |
2727 | case ABI_AIX_NODESC: | |
c81bebd7 | 2728 | case ABI_SOLARIS: |
b6c9286a MM |
2729 | break; |
2730 | ||
2731 | case ABI_NT: | |
2732 | fputs ("..", file); | |
2733 | break; | |
2734 | } | |
2735 | } | |
9878760c RK |
2736 | RS6000_OUTPUT_BASENAME (file, XSTR (x, 0)); |
2737 | return; | |
2738 | ||
9854d9ed RK |
2739 | case 'Z': |
2740 | /* Like 'L', for last word of TImode. */ | |
2741 | if (GET_CODE (x) == REG) | |
5ebfb2ba | 2742 | fprintf (file, "%s", reg_names[REGNO (x) + 3]); |
9854d9ed RK |
2743 | else if (GET_CODE (x) == MEM) |
2744 | { | |
2745 | if (GET_CODE (XEXP (x, 0)) == PRE_INC | |
2746 | || GET_CODE (XEXP (x, 0)) == PRE_DEC) | |
a54d04b7 | 2747 | output_address (plus_constant (XEXP (XEXP (x, 0), 0), 12)); |
9854d9ed | 2748 | else |
a54d04b7 | 2749 | output_address (plus_constant (XEXP (x, 0), 12)); |
ba5e43aa MM |
2750 | if (small_data_operand (x, GET_MODE (x))) |
2751 | fprintf (file, "@%s(%s)", SMALL_DATA_RELOC, reg_names[0]); | |
9854d9ed | 2752 | } |
5c23c401 | 2753 | return; |
9854d9ed | 2754 | |
9878760c RK |
2755 | case 0: |
2756 | if (GET_CODE (x) == REG) | |
2757 | fprintf (file, "%s", reg_names[REGNO (x)]); | |
2758 | else if (GET_CODE (x) == MEM) | |
2759 | { | |
2760 | /* We need to handle PRE_INC and PRE_DEC here, since we need to | |
2761 | know the width from the mode. */ | |
2762 | if (GET_CODE (XEXP (x, 0)) == PRE_INC) | |
2763 | fprintf (file, "%d(%d)", GET_MODE_SIZE (GET_MODE (x)), | |
2764 | REGNO (XEXP (XEXP (x, 0), 0))); | |
2765 | else if (GET_CODE (XEXP (x, 0)) == PRE_DEC) | |
2766 | fprintf (file, "%d(%d)", - GET_MODE_SIZE (GET_MODE (x)), | |
2767 | REGNO (XEXP (XEXP (x, 0), 0))); | |
2768 | else | |
a54d04b7 | 2769 | output_address (XEXP (x, 0)); |
9878760c RK |
2770 | } |
2771 | else | |
a54d04b7 | 2772 | output_addr_const (file, x); |
a85d226b | 2773 | return; |
9878760c RK |
2774 | |
2775 | default: | |
2776 | output_operand_lossage ("invalid %%xn code"); | |
2777 | } | |
2778 | } | |
2779 | \f | |
2780 | /* Print the address of an operand. */ | |
2781 | ||
2782 | void | |
2783 | print_operand_address (file, x) | |
2784 | FILE *file; | |
2785 | register rtx x; | |
2786 | { | |
2787 | if (GET_CODE (x) == REG) | |
4697a36c | 2788 | fprintf (file, "0(%s)", reg_names[ REGNO (x) ]); |
24f30767 | 2789 | else if (GET_CODE (x) == SYMBOL_REF || GET_CODE (x) == CONST || GET_CODE (x) == LABEL_REF) |
9878760c RK |
2790 | { |
2791 | output_addr_const (file, x); | |
ba5e43aa MM |
2792 | if (small_data_operand (x, GET_MODE (x))) |
2793 | fprintf (file, "@%s(%s)", SMALL_DATA_RELOC, reg_names[0]); | |
7509c759 | 2794 | |
4697a36c | 2795 | #ifdef TARGET_NO_TOC |
7509c759 | 2796 | else if (TARGET_NO_TOC) |
4697a36c | 2797 | ; |
4697a36c | 2798 | #endif |
7509c759 | 2799 | else |
4697a36c | 2800 | fprintf (file, "(%s)", reg_names[ TARGET_MINIMAL_TOC ? 30 : 2 ]); |
9878760c RK |
2801 | } |
2802 | else if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 1)) == REG) | |
2803 | { | |
2804 | if (REGNO (XEXP (x, 0)) == 0) | |
4697a36c MM |
2805 | fprintf (file, "%s,%s", reg_names[ REGNO (XEXP (x, 1)) ], |
2806 | reg_names[ REGNO (XEXP (x, 0)) ]); | |
9878760c | 2807 | else |
4697a36c MM |
2808 | fprintf (file, "%s,%s", reg_names[ REGNO (XEXP (x, 0)) ], |
2809 | reg_names[ REGNO (XEXP (x, 1)) ]); | |
9878760c RK |
2810 | } |
2811 | else if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 1)) == CONST_INT) | |
4697a36c MM |
2812 | fprintf (file, "%d(%s)", INTVAL (XEXP (x, 1)), reg_names[ REGNO (XEXP (x, 0)) ]); |
2813 | else if (TARGET_ELF && !TARGET_64BIT && GET_CODE (x) == LO_SUM | |
2814 | && GET_CODE (XEXP (x, 0)) == REG && CONSTANT_P (XEXP (x, 1))) | |
2815 | { | |
2816 | output_addr_const (file, XEXP (x, 1)); | |
2817 | fprintf (file, "@l(%s)", reg_names[ REGNO (XEXP (x, 0)) ]); | |
2818 | } | |
9878760c RK |
2819 | else |
2820 | abort (); | |
2821 | } | |
2822 | \f | |
2823 | /* This page contains routines that are used to determine what the function | |
2824 | prologue and epilogue code will do and write them out. */ | |
2825 | ||
2826 | /* Return the first fixed-point register that is required to be saved. 32 if | |
2827 | none. */ | |
2828 | ||
2829 | int | |
2830 | first_reg_to_save () | |
2831 | { | |
2832 | int first_reg; | |
2833 | ||
2834 | /* Find lowest numbered live register. */ | |
2835 | for (first_reg = 13; first_reg <= 31; first_reg++) | |
2836 | if (regs_ever_live[first_reg]) | |
2837 | break; | |
2838 | ||
e165f3f0 | 2839 | /* If profiling, then we must save/restore every register that contains |
9c849d2a | 2840 | a parameter before/after the .__mcount call. Use registers from 30 down |
e165f3f0 RK |
2841 | to 23 to do this. Don't use the frame pointer in reg 31. |
2842 | ||
2843 | For now, save enough room for all of the parameter registers. */ | |
b6c9286a | 2844 | if (DEFAULT_ABI == ABI_AIX && profile_flag) |
e165f3f0 RK |
2845 | if (first_reg > 23) |
2846 | first_reg = 23; | |
2847 | ||
9878760c RK |
2848 | return first_reg; |
2849 | } | |
2850 | ||
2851 | /* Similar, for FP regs. */ | |
2852 | ||
2853 | int | |
2854 | first_fp_reg_to_save () | |
2855 | { | |
2856 | int first_reg; | |
2857 | ||
2858 | /* Find lowest numbered live register. */ | |
2859 | for (first_reg = 14 + 32; first_reg <= 63; first_reg++) | |
2860 | if (regs_ever_live[first_reg]) | |
2861 | break; | |
2862 | ||
2863 | return first_reg; | |
2864 | } | |
2865 | ||
9878760c RK |
2866 | /* Return non-zero if this function makes calls. */ |
2867 | ||
2868 | int | |
2869 | rs6000_makes_calls () | |
2870 | { | |
2871 | rtx insn; | |
2872 | ||
9c849d2a | 2873 | /* If we are profiling, we will be making a call to __mcount. */ |
0c61c946 RK |
2874 | if (profile_flag) |
2875 | return 1; | |
2876 | ||
9878760c RK |
2877 | for (insn = get_insns (); insn; insn = next_insn (insn)) |
2878 | if (GET_CODE (insn) == CALL_INSN) | |
2879 | return 1; | |
2880 | ||
2881 | return 0; | |
2882 | } | |
2883 | ||
4697a36c MM |
2884 | \f |
2885 | /* Calculate the stack information for the current function. This is | |
2886 | complicated by having two separate calling sequences, the AIX calling | |
2887 | sequence and the V.4 calling sequence. | |
2888 | ||
2889 | AIX stack frames look like: | |
2890 | ||
2891 | SP----> +---------------------------------------+ | |
2892 | | back chain to caller | 0 | |
2893 | +---------------------------------------+ | |
2894 | | saved CR | 4 | |
2895 | +---------------------------------------+ | |
2896 | | saved LR | 8 | |
2897 | +---------------------------------------+ | |
2898 | | reserved for compilers | 12 | |
2899 | +---------------------------------------+ | |
2900 | | reserved for binders | 16 | |
2901 | +---------------------------------------+ | |
2902 | | saved TOC pointer | 20 | |
2903 | +---------------------------------------+ | |
2904 | | Parameter save area (P) | 24 | |
2905 | +---------------------------------------+ | |
a7df97e6 | 2906 | | Alloca space (A) | 24+P |
802a0058 | 2907 | +---------------------------------------+ |
a7df97e6 | 2908 | | Local variable space (L) | 24+P+A |
4697a36c | 2909 | +---------------------------------------+ |
a7df97e6 | 2910 | | Float/int conversion temporary (X) | 24+P+A+L |
4697a36c | 2911 | +---------------------------------------+ |
a7df97e6 | 2912 | | Save area for GP registers (G) | 24+P+A+X+L |
4697a36c | 2913 | +---------------------------------------+ |
a7df97e6 | 2914 | | Save area for FP registers (F) | 24+P+A+X+L+G |
4697a36c MM |
2915 | +---------------------------------------+ |
2916 | old SP->| back chain to caller's caller | | |
2917 | +---------------------------------------+ | |
2918 | ||
2919 | V.4 stack frames look like: | |
2920 | ||
2921 | SP----> +---------------------------------------+ | |
2922 | | back chain to caller | 0 | |
2923 | +---------------------------------------+ | |
5eb387b8 | 2924 | | caller's saved LR | 4 |
4697a36c MM |
2925 | +---------------------------------------+ |
2926 | | Parameter save area (P) | 8 | |
2927 | +---------------------------------------+ | |
a7df97e6 MM |
2928 | | Alloca space (A) | 8+P |
2929 | +---------------------------------------+ | |
2930 | | Varargs save area (V) | 8+P+A | |
2931 | +---------------------------------------+ | |
2932 | | Local variable space (L) | 8+P+A+V | |
2933 | +---------------------------------------+ | |
2934 | | Float/int conversion temporary (X) | 8+P+A+V+L | |
4697a36c | 2935 | +---------------------------------------+ |
a7df97e6 MM |
2936 | | saved CR (C) | 8+P+A+V+L+X |
2937 | +---------------------------------------+ | |
2938 | | Save area for GP registers (G) | 8+P+A+V+L+X+C | |
2939 | +---------------------------------------+ | |
2940 | | Save area for FP registers (F) | 8+P+A+V+L+X+C+G | |
4697a36c MM |
2941 | +---------------------------------------+ |
2942 | old SP->| back chain to caller's caller | | |
2943 | +---------------------------------------+ | |
b6c9286a MM |
2944 | |
2945 | ||
2946 | A PowerPC Windows/NT frame looks like: | |
2947 | ||
2948 | SP----> +---------------------------------------+ | |
2949 | | back chain to caller | 0 | |
2950 | +---------------------------------------+ | |
2951 | | reserved | 4 | |
2952 | +---------------------------------------+ | |
2953 | | reserved | 8 | |
2954 | +---------------------------------------+ | |
2955 | | reserved | 12 | |
2956 | +---------------------------------------+ | |
2957 | | reserved | 16 | |
2958 | +---------------------------------------+ | |
2959 | | reserved | 20 | |
2960 | +---------------------------------------+ | |
2961 | | Parameter save area (P) | 24 | |
2962 | +---------------------------------------+ | |
a7df97e6 MM |
2963 | | Alloca space (A) | 24+P |
2964 | +---------------------------------------+ | |
2965 | | Local variable space (L) | 24+P+A | |
2966 | +---------------------------------------+ | |
2967 | | Float/int conversion temporary (X) | 24+P+A+L | |
b6c9286a | 2968 | +---------------------------------------+ |
a7df97e6 MM |
2969 | | Save area for FP registers (F) | 24+P+A+L+X |
2970 | +---------------------------------------+ | |
2971 | | Possible alignment area (Y) | 24+P+A+L+X+F | |
2972 | +---------------------------------------+ | |
2973 | | Save area for GP registers (G) | 24+P+A+L+X+F+Y | |
2974 | +---------------------------------------+ | |
2975 | | Save area for CR (C) | 24+P+A+L+X+F+Y+G | |
2976 | +---------------------------------------+ | |
2977 | | Save area for TOC (T) | 24+P+A+L+X+F+Y+G+C | |
2978 | +---------------------------------------+ | |
2979 | | Save area for LR (R) | 24+P+A+L+X+F+Y+G+C+T | |
b6c9286a MM |
2980 | +---------------------------------------+ |
2981 | old SP->| back chain to caller's caller | | |
2982 | +---------------------------------------+ | |
2983 | ||
2984 | For NT, there is no specific order to save the registers, but in | |
2985 | order to support __builtin_return_address, the save area for the | |
2986 | link register needs to be in a known place, so we use -4 off of the | |
2987 | old SP. To support calls through pointers, we also allocate a | |
2988 | fixed slot to store the TOC, -8 off the old SP. */ | |
4697a36c | 2989 | |
61b2fbe7 MM |
2990 | #ifndef ABI_STACK_BOUNDARY |
2991 | #define ABI_STACK_BOUNDARY STACK_BOUNDARY | |
2992 | #endif | |
2993 | ||
4697a36c MM |
2994 | rs6000_stack_t * |
2995 | rs6000_stack_info () | |
2996 | { | |
2997 | static rs6000_stack_t info, zero_info; | |
2998 | rs6000_stack_t *info_ptr = &info; | |
2999 | int reg_size = TARGET_64BIT ? 8 : 4; | |
24d304eb | 3000 | enum rs6000_abi abi; |
b6c9286a | 3001 | int total_raw_size; |
4697a36c MM |
3002 | |
3003 | /* Zero all fields portably */ | |
3004 | info = zero_info; | |
3005 | ||
3006 | /* Select which calling sequence */ | |
b6c9286a | 3007 | info_ptr->abi = abi = DEFAULT_ABI; |
9878760c | 3008 | |
4697a36c MM |
3009 | /* Calculate which registers need to be saved & save area size */ |
3010 | info_ptr->first_gp_reg_save = first_reg_to_save (); | |
3011 | info_ptr->gp_size = reg_size * (32 - info_ptr->first_gp_reg_save); | |
3012 | ||
3013 | info_ptr->first_fp_reg_save = first_fp_reg_to_save (); | |
3014 | info_ptr->fp_size = 8 * (64 - info_ptr->first_fp_reg_save); | |
3015 | ||
3016 | /* Does this function call anything? */ | |
3017 | info_ptr->calls_p = rs6000_makes_calls (); | |
3018 | ||
62c0fb87 | 3019 | /* Allocate space to save the toc. */ |
82280d5e | 3020 | if (abi == ABI_NT && info_ptr->calls_p) |
b6c9286a MM |
3021 | { |
3022 | info_ptr->toc_save_p = 1; | |
3023 | info_ptr->toc_size = reg_size; | |
3024 | } | |
3025 | ||
802a0058 MM |
3026 | /* Does this machine need the float/int conversion area? */ |
3027 | info_ptr->fpmem_p = regs_ever_live[FPMEM_REGNUM]; | |
3028 | ||
b6c9286a MM |
3029 | /* If this is main and we need to call a function to set things up, |
3030 | save main's arguments around the call. */ | |
c81bebd7 MM |
3031 | #ifdef TARGET_EABI |
3032 | if (TARGET_EABI) | |
3033 | #endif | |
b6c9286a | 3034 | { |
30ccf55d MS |
3035 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)), "main") == 0 |
3036 | && DECL_CONTEXT (current_function_decl) == NULL_TREE) | |
b6c9286a | 3037 | { |
c81bebd7 | 3038 | info_ptr->main_p = 1; |
b6c9286a | 3039 | |
c81bebd7 MM |
3040 | #ifdef NAME__MAIN |
3041 | info_ptr->calls_p = 1; | |
b6c9286a | 3042 | |
c81bebd7 | 3043 | if (DECL_ARGUMENTS (current_function_decl)) |
b6c9286a | 3044 | { |
c81bebd7 MM |
3045 | int i; |
3046 | tree arg; | |
3047 | ||
3048 | info_ptr->main_save_p = 1; | |
3049 | info_ptr->main_size = 0; | |
3050 | ||
3051 | for ((i = 0), (arg = DECL_ARGUMENTS (current_function_decl)); | |
3052 | arg != NULL_TREE && i < 8; | |
3053 | (arg = TREE_CHAIN (arg)), i++) | |
3054 | { | |
3055 | info_ptr->main_size += reg_size; | |
3056 | } | |
b6c9286a | 3057 | } |
b6c9286a | 3058 | #endif |
c81bebd7 | 3059 | } |
b6c9286a MM |
3060 | } |
3061 | ||
c81bebd7 | 3062 | |
4697a36c MM |
3063 | /* Determine if we need to save the link register */ |
3064 | if (regs_ever_live[65] || profile_flag | |
3065 | #ifdef TARGET_RELOCATABLE | |
3066 | || (TARGET_RELOCATABLE && (get_pool_size () != 0)) | |
3067 | #endif | |
3068 | || (info_ptr->first_fp_reg_save != 64 | |
3069 | && !FP_SAVE_INLINE (info_ptr->first_fp_reg_save)) | |
24d304eb | 3070 | || (abi == ABI_V4 && current_function_calls_alloca) |
c81bebd7 | 3071 | || (abi == ABI_SOLARIS && current_function_calls_alloca) |
4697a36c MM |
3072 | || info_ptr->calls_p) |
3073 | { | |
3074 | info_ptr->lr_save_p = 1; | |
3075 | regs_ever_live[65] = 1; | |
b6c9286a MM |
3076 | if (abi == ABI_NT) |
3077 | info_ptr->lr_size = reg_size; | |
4697a36c MM |
3078 | } |
3079 | ||
3080 | /* Determine if we need to save the condition code registers */ | |
3081 | if (regs_ever_live[70] || regs_ever_live[71] || regs_ever_live[72]) | |
3082 | { | |
3083 | info_ptr->cr_save_p = 1; | |
c81bebd7 | 3084 | if (abi == ABI_V4 || abi == ABI_NT || abi == ABI_SOLARIS) |
4697a36c MM |
3085 | info_ptr->cr_size = reg_size; |
3086 | } | |
3087 | ||
3088 | /* Determine various sizes */ | |
3089 | info_ptr->reg_size = reg_size; | |
3090 | info_ptr->fixed_size = RS6000_SAVE_AREA; | |
3091 | info_ptr->varargs_size = RS6000_VARARGS_AREA; | |
189e03e3 DE |
3092 | info_ptr->vars_size = RS6000_ALIGN (get_frame_size (), 8); |
3093 | info_ptr->parm_size = RS6000_ALIGN (current_function_outgoing_args_size, 8); | |
802a0058 | 3094 | info_ptr->fpmem_size = (info_ptr->fpmem_p) ? 8 : 0; |
189e03e3 | 3095 | info_ptr->save_size = RS6000_ALIGN (info_ptr->fp_size |
b6c9286a MM |
3096 | + info_ptr->gp_size |
3097 | + info_ptr->cr_size | |
3098 | + info_ptr->lr_size | |
3099 | + info_ptr->toc_size | |
3100 | + info_ptr->main_size, 8); | |
3101 | ||
3102 | total_raw_size = (info_ptr->vars_size | |
3103 | + info_ptr->parm_size | |
802a0058 | 3104 | + info_ptr->fpmem_size |
b6c9286a MM |
3105 | + info_ptr->save_size |
3106 | + info_ptr->varargs_size | |
3107 | + info_ptr->fixed_size); | |
3108 | ||
189e03e3 | 3109 | info_ptr->total_size = RS6000_ALIGN (total_raw_size, ABI_STACK_BOUNDARY / BITS_PER_UNIT); |
4697a36c MM |
3110 | |
3111 | /* Determine if we need to allocate any stack frame. | |
3112 | For AIX We need to push the stack if a frame pointer is needed (because | |
3113 | the stack might be dynamically adjusted), if we are debugging, if the | |
3114 | total stack size is more than 220 bytes, or if we make calls. | |
3115 | ||
3116 | For V.4 we don't have the stack cushion that AIX uses, but assume that | |
3117 | the debugger can handle stackless frames. */ | |
3118 | ||
3119 | if (info_ptr->calls_p) | |
3120 | info_ptr->push_p = 1; | |
3121 | ||
c81bebd7 | 3122 | else if (abi == ABI_V4 || abi == ABI_NT || abi == ABI_SOLARIS) |
b6c9286a | 3123 | info_ptr->push_p = (total_raw_size > info_ptr->fixed_size |
4697a36c MM |
3124 | || info_ptr->lr_save_p); |
3125 | ||
3126 | else | |
3127 | info_ptr->push_p = (frame_pointer_needed | |
3128 | || write_symbols != NO_DEBUG | |
3129 | || info_ptr->total_size > 220); | |
3130 | ||
3131 | /* Calculate the offsets */ | |
24d304eb | 3132 | switch (abi) |
4697a36c | 3133 | { |
b6c9286a | 3134 | case ABI_NONE: |
24d304eb | 3135 | default: |
b6c9286a MM |
3136 | abort (); |
3137 | ||
3138 | case ABI_AIX: | |
3139 | case ABI_AIX_NODESC: | |
3140 | info_ptr->fp_save_offset = - info_ptr->fp_size; | |
3141 | info_ptr->gp_save_offset = info_ptr->fp_save_offset - info_ptr->gp_size; | |
3142 | info_ptr->main_save_offset = info_ptr->gp_save_offset - info_ptr->main_size; | |
3143 | info_ptr->cr_save_offset = 4; | |
3144 | info_ptr->lr_save_offset = 8; | |
24d304eb RK |
3145 | break; |
3146 | ||
3147 | case ABI_V4: | |
c81bebd7 | 3148 | case ABI_SOLARIS: |
b6c9286a MM |
3149 | info_ptr->fp_save_offset = - info_ptr->fp_size; |
3150 | info_ptr->gp_save_offset = info_ptr->fp_save_offset - info_ptr->gp_size; | |
a7df97e6 MM |
3151 | info_ptr->cr_save_offset = info_ptr->gp_save_offset - info_ptr->cr_size; |
3152 | info_ptr->toc_save_offset = info_ptr->cr_save_offset - info_ptr->toc_size; | |
3153 | info_ptr->main_save_offset = info_ptr->toc_save_offset - info_ptr->main_size; | |
b6c9286a MM |
3154 | info_ptr->lr_save_offset = reg_size; |
3155 | break; | |
3156 | ||
3157 | case ABI_NT: | |
3158 | info_ptr->lr_save_offset = -4; | |
3159 | info_ptr->toc_save_offset = info_ptr->lr_save_offset - info_ptr->lr_size; | |
3160 | info_ptr->cr_save_offset = info_ptr->toc_save_offset - info_ptr->toc_size; | |
3161 | info_ptr->gp_save_offset = info_ptr->cr_save_offset - info_ptr->cr_size - info_ptr->gp_size + reg_size; | |
3162 | info_ptr->fp_save_offset = info_ptr->gp_save_offset - info_ptr->fp_size; | |
3163 | if (info_ptr->fp_size && ((- info_ptr->fp_save_offset) % 8) != 0) | |
3164 | info_ptr->fp_save_offset -= 4; | |
3165 | ||
3166 | info_ptr->main_save_offset = info_ptr->fp_save_offset - info_ptr->main_size; | |
24d304eb | 3167 | break; |
4697a36c MM |
3168 | } |
3169 | ||
a7df97e6 MM |
3170 | if (info_ptr->fpmem_p) |
3171 | info_ptr->fpmem_offset = STARTING_FRAME_OFFSET - info_ptr->total_size + info_ptr->vars_size; | |
3172 | ||
4697a36c MM |
3173 | /* Zero offsets if we're not saving those registers */ |
3174 | if (!info_ptr->fp_size) | |
3175 | info_ptr->fp_save_offset = 0; | |
3176 | ||
3177 | if (!info_ptr->gp_size) | |
3178 | info_ptr->gp_save_offset = 0; | |
3179 | ||
3180 | if (!info_ptr->lr_save_p) | |
3181 | info_ptr->lr_save_offset = 0; | |
3182 | ||
3183 | if (!info_ptr->cr_save_p) | |
3184 | info_ptr->cr_save_offset = 0; | |
3185 | ||
b6c9286a MM |
3186 | if (!info_ptr->toc_save_p) |
3187 | info_ptr->toc_save_offset = 0; | |
3188 | ||
3189 | if (!info_ptr->main_save_p) | |
3190 | info_ptr->main_save_offset = 0; | |
3191 | ||
802a0058 MM |
3192 | if (!info_ptr->fpmem_p) |
3193 | info_ptr->fpmem_offset = 0; | |
3194 | else | |
3195 | { | |
3196 | rs6000_fpmem_size = info_ptr->fpmem_size; | |
a7df97e6 | 3197 | rs6000_fpmem_offset = info_ptr->total_size + info_ptr->fpmem_offset; |
802a0058 MM |
3198 | } |
3199 | ||
4697a36c MM |
3200 | return info_ptr; |
3201 | } | |
3202 | ||
3203 | void | |
3204 | debug_stack_info (info) | |
3205 | rs6000_stack_t *info; | |
9878760c | 3206 | { |
24d304eb RK |
3207 | char *abi_string; |
3208 | ||
4697a36c MM |
3209 | if (!info) |
3210 | info = rs6000_stack_info (); | |
3211 | ||
3212 | fprintf (stderr, "\nStack information for function %s:\n", | |
3213 | ((current_function_decl && DECL_NAME (current_function_decl)) | |
3214 | ? IDENTIFIER_POINTER (DECL_NAME (current_function_decl)) | |
3215 | : "<unknown>")); | |
3216 | ||
24d304eb RK |
3217 | switch (info->abi) |
3218 | { | |
b6c9286a MM |
3219 | default: abi_string = "Unknown"; break; |
3220 | case ABI_NONE: abi_string = "NONE"; break; | |
3221 | case ABI_AIX: abi_string = "AIX"; break; | |
3222 | case ABI_AIX_NODESC: abi_string = "AIX"; break; | |
3223 | case ABI_V4: abi_string = "V.4"; break; | |
c81bebd7 | 3224 | case ABI_SOLARIS: abi_string = "Solaris"; break; |
b6c9286a | 3225 | case ABI_NT: abi_string = "NT"; break; |
24d304eb RK |
3226 | } |
3227 | ||
3228 | fprintf (stderr, "\tABI = %5s\n", abi_string); | |
3229 | ||
4697a36c MM |
3230 | if (info->first_gp_reg_save != 32) |
3231 | fprintf (stderr, "\tfirst_gp_reg_save = %5d\n", info->first_gp_reg_save); | |
3232 | ||
3233 | if (info->first_fp_reg_save != 64) | |
3234 | fprintf (stderr, "\tfirst_fp_reg_save = %5d\n", info->first_fp_reg_save); | |
9878760c | 3235 | |
4697a36c MM |
3236 | if (info->lr_save_p) |
3237 | fprintf (stderr, "\tlr_save_p = %5d\n", info->lr_save_p); | |
9878760c | 3238 | |
4697a36c MM |
3239 | if (info->cr_save_p) |
3240 | fprintf (stderr, "\tcr_save_p = %5d\n", info->cr_save_p); | |
3241 | ||
b6c9286a MM |
3242 | if (info->toc_save_p) |
3243 | fprintf (stderr, "\ttoc_save_p = %5d\n", info->toc_save_p); | |
3244 | ||
4697a36c MM |
3245 | if (info->push_p) |
3246 | fprintf (stderr, "\tpush_p = %5d\n", info->push_p); | |
3247 | ||
3248 | if (info->calls_p) | |
3249 | fprintf (stderr, "\tcalls_p = %5d\n", info->calls_p); | |
3250 | ||
b6c9286a MM |
3251 | if (info->main_p) |
3252 | fprintf (stderr, "\tmain_p = %5d\n", info->main_p); | |
3253 | ||
3254 | if (info->main_save_p) | |
3255 | fprintf (stderr, "\tmain_save_p = %5d\n", info->main_save_p); | |
3256 | ||
802a0058 MM |
3257 | if (info->fpmem_p) |
3258 | fprintf (stderr, "\tfpmem_p = %5d\n", info->fpmem_p); | |
3259 | ||
4697a36c MM |
3260 | if (info->gp_save_offset) |
3261 | fprintf (stderr, "\tgp_save_offset = %5d\n", info->gp_save_offset); | |
3262 | ||
3263 | if (info->fp_save_offset) | |
3264 | fprintf (stderr, "\tfp_save_offset = %5d\n", info->fp_save_offset); | |
3265 | ||
3266 | if (info->lr_save_offset) | |
3267 | fprintf (stderr, "\tlr_save_offset = %5d\n", info->lr_save_offset); | |
3268 | ||
3269 | if (info->cr_save_offset) | |
3270 | fprintf (stderr, "\tcr_save_offset = %5d\n", info->cr_save_offset); | |
3271 | ||
b6c9286a MM |
3272 | if (info->toc_save_offset) |
3273 | fprintf (stderr, "\ttoc_save_offset = %5d\n", info->toc_save_offset); | |
3274 | ||
4697a36c MM |
3275 | if (info->varargs_save_offset) |
3276 | fprintf (stderr, "\tvarargs_save_offset = %5d\n", info->varargs_save_offset); | |
3277 | ||
b6c9286a MM |
3278 | if (info->main_save_offset) |
3279 | fprintf (stderr, "\tmain_save_offset = %5d\n", info->main_save_offset); | |
3280 | ||
802a0058 MM |
3281 | if (info->fpmem_offset) |
3282 | fprintf (stderr, "\tfpmem_offset = %5d\n", info->fpmem_offset); | |
3283 | ||
4697a36c MM |
3284 | if (info->total_size) |
3285 | fprintf (stderr, "\ttotal_size = %5d\n", info->total_size); | |
3286 | ||
3287 | if (info->varargs_size) | |
3288 | fprintf (stderr, "\tvarargs_size = %5d\n", info->varargs_size); | |
3289 | ||
3290 | if (info->vars_size) | |
3291 | fprintf (stderr, "\tvars_size = %5d\n", info->vars_size); | |
3292 | ||
3293 | if (info->parm_size) | |
3294 | fprintf (stderr, "\tparm_size = %5d\n", info->parm_size); | |
3295 | ||
802a0058 MM |
3296 | if (info->fpmem_size) |
3297 | fprintf (stderr, "\tfpmem_size = %5d\n", info->fpmem_size); | |
3298 | ||
4697a36c MM |
3299 | if (info->fixed_size) |
3300 | fprintf (stderr, "\tfixed_size = %5d\n", info->fixed_size); | |
3301 | ||
3302 | if (info->gp_size) | |
3303 | fprintf (stderr, "\tgp_size = %5d\n", info->gp_size); | |
3304 | ||
3305 | if (info->fp_size) | |
3306 | fprintf (stderr, "\tfp_size = %5d\n", info->fp_size); | |
3307 | ||
b6c9286a MM |
3308 | if (info->lr_size) |
3309 | fprintf (stderr, "\tlr_size = %5d\n", info->cr_size); | |
3310 | ||
4697a36c MM |
3311 | if (info->cr_size) |
3312 | fprintf (stderr, "\tcr_size = %5d\n", info->cr_size); | |
3313 | ||
b6c9286a MM |
3314 | if (info->toc_size) |
3315 | fprintf (stderr, "\ttoc_size = %5d\n", info->toc_size); | |
3316 | ||
3317 | if (info->main_size) | |
3318 | fprintf (stderr, "\tmain_size = %5d\n", info->main_size); | |
3319 | ||
4697a36c MM |
3320 | if (info->save_size) |
3321 | fprintf (stderr, "\tsave_size = %5d\n", info->save_size); | |
3322 | ||
3323 | if (info->reg_size != 4) | |
3324 | fprintf (stderr, "\treg_size = %5d\n", info->reg_size); | |
3325 | ||
3326 | fprintf (stderr, "\n"); | |
9878760c | 3327 | } |
4697a36c | 3328 | \f |
c7ca610e RK |
3329 | /* Write out an instruction to load the TOC_TABLE address into register 30. |
3330 | This is only needed when TARGET_TOC, TARGET_MINIMAL_TOC, and there is | |
3331 | a constant pool. */ | |
3332 | ||
3333 | void | |
3334 | rs6000_output_load_toc_table (file) | |
3335 | FILE *file; | |
3336 | { | |
3337 | char buf[256]; | |
3338 | ||
3339 | #ifdef USING_SVR4_H | |
3340 | if (TARGET_RELOCATABLE) | |
3341 | { | |
3342 | ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); | |
3343 | fprintf (file, "\tbl "); | |
3344 | assemble_name (file, buf); | |
3345 | fprintf (file, "\n"); | |
3346 | ||
3347 | ASM_OUTPUT_INTERNAL_LABEL (file, "LCF", rs6000_pic_labelno); | |
3348 | fprintf (file, "\tmflr %s\n", reg_names[30]); | |
3349 | ||
3350 | if (TARGET_POWERPC64) | |
3351 | fprintf (file, "\tld"); | |
3352 | else if (TARGET_NEW_MNEMONICS) | |
3353 | fprintf (file, "\tlwz"); | |
3354 | else | |
3355 | fprintf (file, "\tl"); | |
3356 | ||
3357 | fprintf (file, " %s,(", reg_names[0]); | |
3358 | ASM_GENERATE_INTERNAL_LABEL (buf, "LCL", rs6000_pic_labelno); | |
3359 | assemble_name (file, buf); | |
3360 | fprintf (file, "-"); | |
3361 | ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); | |
3362 | assemble_name (file, buf); | |
3363 | fprintf (file, ")(%s)\n", reg_names[30]); | |
3364 | asm_fprintf (file, "\t{cax|add} %s,%s,%s\n", | |
3365 | reg_names[30], reg_names[0], reg_names[30]); | |
3366 | rs6000_pic_labelno++; | |
3367 | } | |
3368 | else if (!TARGET_64BIT) | |
3369 | { | |
3370 | ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1); | |
3371 | asm_fprintf (file, "\t{cau|addis} %s,%s,", reg_names[30], reg_names[0]); | |
3372 | assemble_name (file, buf); | |
3373 | asm_fprintf (file, "@ha\n"); | |
3374 | if (TARGET_NEW_MNEMONICS) | |
3375 | { | |
3376 | asm_fprintf (file, "\taddi %s,%s,", reg_names[30], reg_names[30]); | |
3377 | assemble_name (file, buf); | |
3378 | asm_fprintf (file, "@l\n"); | |
3379 | } | |
3380 | else | |
3381 | { | |
3382 | asm_fprintf (file, "\tcal %s,", reg_names[30]); | |
3383 | assemble_name (file, buf); | |
3384 | asm_fprintf (file, "@l(%s)\n", reg_names[30]); | |
3385 | } | |
3386 | } | |
3387 | else | |
3388 | abort (); | |
3389 | ||
3390 | #else /* !USING_SVR4_H */ | |
3391 | ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 0); | |
3392 | asm_fprintf (file, "\t{l|lwz} %s,", reg_names[30]); | |
3393 | assemble_name (file, buf); | |
3394 | asm_fprintf (file, "(%s)\n", reg_names[2]); | |
3395 | #endif /* USING_SVR4_H */ | |
3396 | } | |
3397 | ||
9878760c | 3398 | /* Write function prologue. */ |
9878760c RK |
3399 | void |
3400 | output_prolog (file, size) | |
3401 | FILE *file; | |
3402 | int size; | |
3403 | { | |
4697a36c | 3404 | rs6000_stack_t *info = rs6000_stack_info (); |
b6c9286a MM |
3405 | int reg_size = info->reg_size; |
3406 | char *store_reg; | |
3407 | char *load_reg; | |
979721f8 MM |
3408 | int sp_reg = 1; |
3409 | int sp_offset = 0; | |
b6c9286a | 3410 | |
8f802bfb | 3411 | if (TARGET_32BIT) |
b6c9286a | 3412 | { |
8f802bfb DE |
3413 | store_reg = "\t{st|stw} %s,%d(%s)\n"; |
3414 | load_reg = "\t{l|lwz} %s,%d(%s)\n"; | |
b6c9286a MM |
3415 | } |
3416 | else | |
3417 | { | |
8f802bfb DE |
3418 | store_reg = "\tstd %s,%d(%s)\n"; |
3419 | load_reg = "\tlld %s,%d(%s)\n"; | |
b6c9286a | 3420 | } |
9878760c | 3421 | |
4697a36c MM |
3422 | if (TARGET_DEBUG_STACK) |
3423 | debug_stack_info (info); | |
9878760c RK |
3424 | |
3425 | /* Write .extern for any function we will call to save and restore fp | |
3426 | values. */ | |
b6c9286a | 3427 | if (info->first_fp_reg_save < 64 && !FP_SAVE_INLINE (info->first_fp_reg_save)) |
4d30c363 | 3428 | fprintf (file, "\t.extern %s%d%s\n\t.extern %s%d%s\n", |
4697a36c MM |
3429 | SAVE_FP_PREFIX, info->first_fp_reg_save - 32, SAVE_FP_SUFFIX, |
3430 | RESTORE_FP_PREFIX, info->first_fp_reg_save - 32, RESTORE_FP_SUFFIX); | |
9878760c RK |
3431 | |
3432 | /* Write .extern for truncation routines, if needed. */ | |
3433 | if (rs6000_trunc_used && ! trunc_defined) | |
3434 | { | |
e138174b ILT |
3435 | fprintf (file, "\t.extern .%s\n\t.extern .%s\n", |
3436 | RS6000_ITRUNC, RS6000_UITRUNC); | |
9878760c RK |
3437 | trunc_defined = 1; |
3438 | } | |
4697a36c | 3439 | |
c764f757 RK |
3440 | /* Write .extern for AIX common mode routines, if needed. */ |
3441 | if (! TARGET_POWER && ! TARGET_POWERPC && ! common_mode_defined) | |
3442 | { | |
f6709c70 JW |
3443 | fputs ("\t.extern __mulh\n", file); |
3444 | fputs ("\t.extern __mull\n", file); | |
3445 | fputs ("\t.extern __divss\n", file); | |
3446 | fputs ("\t.extern __divus\n", file); | |
3447 | fputs ("\t.extern __quoss\n", file); | |
3448 | fputs ("\t.extern __quous\n", file); | |
c764f757 RK |
3449 | common_mode_defined = 1; |
3450 | } | |
9878760c | 3451 | |
979721f8 | 3452 | /* For V.4, update stack before we do any saving and set back pointer. */ |
c81bebd7 | 3453 | if (info->push_p && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS)) |
979721f8 MM |
3454 | { |
3455 | if (info->total_size < 32767) | |
3456 | { | |
3457 | asm_fprintf (file, | |
3458 | (TARGET_32BIT) ? "\t{stu|stwu} %s,%d(%s)\n" : "\tstdu %s,%d(%s)\n", | |
3459 | reg_names[1], - info->total_size, reg_names[1]); | |
3460 | sp_offset = info->total_size; | |
3461 | } | |
3462 | else | |
3463 | { | |
3464 | int neg_size = - info->total_size; | |
3465 | sp_reg = 12; | |
3466 | asm_fprintf (file, "\tmr %s,%s\n", reg_names[12], reg_names[1]); | |
3467 | asm_fprintf (file, "\t{liu|lis} %s,%d\n\t{oril|ori} %s,%s,%d\n", | |
3468 | reg_names[0], (neg_size >> 16) & 0xffff, | |
3469 | reg_names[0], reg_names[0], neg_size & 0xffff); | |
3470 | asm_fprintf (file, | |
3471 | (TARGET_32BIT) ? "\t{stux|stwux} %s,%s,%s\n" : "\tstdux %s,%s,%s\n", | |
3472 | reg_names[1], reg_names[1], reg_names[0]); | |
3473 | } | |
3474 | } | |
3475 | ||
9878760c | 3476 | /* If we use the link register, get it into r0. */ |
4697a36c MM |
3477 | if (info->lr_save_p) |
3478 | asm_fprintf (file, "\tmflr %s\n", reg_names[0]); | |
9878760c RK |
3479 | |
3480 | /* If we need to save CR, put it into r12. */ | |
979721f8 | 3481 | if (info->cr_save_p && sp_reg != 12) |
4697a36c | 3482 | asm_fprintf (file, "\tmfcr %s\n", reg_names[12]); |
9878760c RK |
3483 | |
3484 | /* Do any required saving of fpr's. If only one or two to save, do it | |
53322b0c RK |
3485 | ourself. Otherwise, call function. Note that since they are statically |
3486 | linked, we do not need a nop following them. */ | |
4697a36c | 3487 | if (FP_SAVE_INLINE (info->first_fp_reg_save)) |
bacbde18 | 3488 | { |
4697a36c | 3489 | int regno = info->first_fp_reg_save; |
979721f8 | 3490 | int loc = info->fp_save_offset + sp_offset; |
4697a36c MM |
3491 | |
3492 | for ( ; regno < 64; regno++, loc += 8) | |
979721f8 | 3493 | asm_fprintf (file, "\tstfd %s,%d(%s)\n", reg_names[regno], loc, reg_names[sp_reg]); |
bacbde18 | 3494 | } |
4697a36c MM |
3495 | else if (info->first_fp_reg_save != 64) |
3496 | asm_fprintf (file, "\tbl %s%d%s\n", SAVE_FP_PREFIX, | |
3497 | info->first_fp_reg_save - 32, SAVE_FP_SUFFIX); | |
9878760c RK |
3498 | |
3499 | /* Now save gpr's. */ | |
4697a36c | 3500 | if (! TARGET_MULTIPLE || info->first_gp_reg_save == 31 || TARGET_64BIT) |
85638c0d | 3501 | { |
4697a36c | 3502 | int regno = info->first_gp_reg_save; |
979721f8 | 3503 | int loc = info->gp_save_offset + sp_offset; |
85638c0d | 3504 | |
4697a36c | 3505 | for ( ; regno < 32; regno++, loc += reg_size) |
979721f8 | 3506 | asm_fprintf (file, store_reg, reg_names[regno], loc, reg_names[sp_reg]); |
85638c0d RK |
3507 | } |
3508 | ||
4697a36c MM |
3509 | else if (info->first_gp_reg_save != 32) |
3510 | asm_fprintf (file, "\t{stm|stmw} %s,%d(%s)\n", | |
3511 | reg_names[info->first_gp_reg_save], | |
979721f8 MM |
3512 | info->gp_save_offset + sp_offset, |
3513 | reg_names[sp_reg]); | |
9878760c | 3514 | |
b6c9286a MM |
3515 | /* Save main's arguments if we need to call a function */ |
3516 | #ifdef NAME__MAIN | |
3517 | if (info->main_save_p) | |
3518 | { | |
3519 | int regno; | |
5ebfb2ba | 3520 | int loc = info->main_save_offset + sp_offset; |
b6c9286a MM |
3521 | int size = info->main_size; |
3522 | ||
3523 | for (regno = 3; size > 0; regno++, loc -= reg_size, size -= reg_size) | |
979721f8 | 3524 | asm_fprintf (file, store_reg, reg_names[regno], loc, reg_names[sp_reg]); |
b6c9286a MM |
3525 | } |
3526 | #endif | |
3527 | ||
9878760c | 3528 | /* Save lr if we used it. */ |
4697a36c | 3529 | if (info->lr_save_p) |
979721f8 MM |
3530 | asm_fprintf (file, store_reg, reg_names[0], info->lr_save_offset + sp_offset, |
3531 | reg_names[sp_reg]); | |
9878760c RK |
3532 | |
3533 | /* Save CR if we use any that must be preserved. */ | |
4697a36c | 3534 | if (info->cr_save_p) |
979721f8 MM |
3535 | { |
3536 | if (sp_reg == 12) /* If r12 is used to hold the original sp, copy cr now */ | |
3537 | { | |
3538 | asm_fprintf (file, "\tmfcr %s\n", reg_names[0]); | |
3539 | asm_fprintf (file, store_reg, reg_names[0], | |
3540 | info->cr_save_offset + sp_offset, | |
3541 | reg_names[sp_reg]); | |
3542 | } | |
3543 | else | |
3544 | asm_fprintf (file, store_reg, reg_names[12], info->cr_save_offset + sp_offset, | |
3545 | reg_names[sp_reg]); | |
3546 | } | |
9878760c | 3547 | |
979721f8 MM |
3548 | /* NT needs us to probe the stack frame every 4k pages for large frames, so |
3549 | do it here. */ | |
3550 | if (DEFAULT_ABI == ABI_NT && info->total_size > 4096) | |
3551 | { | |
3552 | if (info->total_size < 32768) | |
3553 | { | |
3554 | int probe_offset = 4096; | |
3555 | while (probe_offset < info->total_size) | |
3556 | { | |
3557 | asm_fprintf (file, "\t{l|lwz} %s,%d(%s)\n", reg_names[0], -probe_offset, reg_names[1]); | |
3558 | probe_offset += 4096; | |
3559 | } | |
3560 | } | |
3561 | else | |
3562 | { | |
3563 | int probe_iterations = info->total_size / 4096; | |
3564 | static int probe_labelno = 0; | |
3565 | char buf[256]; | |
3566 | ||
3567 | if (probe_iterations < 32768) | |
3568 | asm_fprintf (file, "\tli %s,%d\n", reg_names[12], probe_iterations); | |
3569 | else | |
3570 | { | |
3571 | asm_fprintf (file, "\tlis %s,%d\n", reg_names[12], probe_iterations >> 16); | |
3572 | if (probe_iterations & 0xffff) | |
3573 | asm_fprintf (file, "\tori %s,%s,%d\n", reg_names[12], reg_names[12], | |
3574 | probe_iterations & 0xffff); | |
3575 | } | |
3576 | asm_fprintf (file, "\tmtctr %s\n", reg_names[12]); | |
3577 | asm_fprintf (file, "\tmr %s,%s\n", reg_names[12], reg_names[1]); | |
3578 | ASM_OUTPUT_INTERNAL_LABEL (file, "LCprobe", probe_labelno); | |
3579 | asm_fprintf (file, "\t{lu|lwzu} %s,-4096(%s)\n", reg_names[0], reg_names[12]); | |
2a50d6bc | 3580 | ASM_GENERATE_INTERNAL_LABEL (buf, "LCprobe", probe_labelno++); |
979721f8 MM |
3581 | fputs ("\tbdnz ", file); |
3582 | assemble_name (file, buf); | |
3583 | fputs ("\n", file); | |
3584 | } | |
3585 | } | |
3586 | ||
3587 | /* Update stack and set back pointer and we have already done so for V.4. */ | |
c81bebd7 | 3588 | if (info->push_p && DEFAULT_ABI != ABI_V4 && DEFAULT_ABI != ABI_SOLARIS) |
9878760c | 3589 | { |
4697a36c MM |
3590 | if (info->total_size < 32767) |
3591 | asm_fprintf (file, | |
8f802bfb | 3592 | (TARGET_32BIT) ? "\t{stu|stwu} %s,%d(%s)\n" : "\tstdu %s,%d(%s)\n", |
4697a36c | 3593 | reg_names[1], - info->total_size, reg_names[1]); |
9878760c RK |
3594 | else |
3595 | { | |
ef7a1424 | 3596 | int neg_size = - info->total_size; |
4697a36c | 3597 | asm_fprintf (file, "\t{liu|lis} %s,%d\n\t{oril|ori} %s,%s,%d\n", |
ef7a1424 RK |
3598 | reg_names[0], (neg_size >> 16) & 0xffff, |
3599 | reg_names[0], reg_names[0], neg_size & 0xffff); | |
4697a36c | 3600 | asm_fprintf (file, |
8f802bfb | 3601 | (TARGET_32BIT) ? "\t{stux|stwux} %s,%s,%s\n" : "\tstdux %s,%s,%s\n", |
4697a36c | 3602 | reg_names[1], reg_names[1], reg_names[0]); |
9878760c RK |
3603 | } |
3604 | } | |
3605 | ||
3606 | /* Set frame pointer, if needed. */ | |
3607 | if (frame_pointer_needed) | |
4697a36c | 3608 | asm_fprintf (file, "\tmr %s,%s\n", reg_names[31], reg_names[1]); |
1875cc88 | 3609 | |
b6c9286a MM |
3610 | #ifdef NAME__MAIN |
3611 | /* If we need to call a function to set things up for main, do so now | |
3612 | before dealing with the TOC. */ | |
3613 | if (info->main_p) | |
3614 | { | |
3615 | char *prefix = ""; | |
3616 | ||
3617 | switch (DEFAULT_ABI) | |
3618 | { | |
3619 | case ABI_AIX: prefix = "."; break; | |
3620 | case ABI_NT: prefix = ".."; break; | |
3621 | } | |
3622 | ||
3623 | fprintf (file, "\tbl %s%s\n", prefix, NAME__MAIN); | |
3624 | #ifdef RS6000_CALL_GLUE2 | |
3625 | fprintf (file, "\t%s%s%s\n", RS6000_CALL_GLUE2, prefix, NAME_MAIN); | |
3626 | #else | |
3627 | #ifdef RS6000_CALL_GLUE | |
3628 | if (DEFAULT_ABI == ABI_AIX || DEFAULT_ABI == ABI_NT) | |
3629 | fprintf (file, "\t%s\n", RS6000_CALL_GLUE); | |
3630 | #endif | |
3631 | #endif | |
3632 | ||
3633 | if (info->main_save_p) | |
3634 | { | |
3635 | int regno; | |
3636 | int loc; | |
3637 | int size = info->main_size; | |
3638 | ||
3639 | if (info->total_size < 32767) | |
3640 | { | |
3641 | loc = info->total_size + info->main_save_offset; | |
3642 | for (regno = 3; size > 0; regno++, size -= reg_size, loc -= reg_size) | |
3643 | asm_fprintf (file, load_reg, reg_names[regno], loc, reg_names[1]); | |
3644 | } | |
3645 | else | |
5ebfb2ba MM |
3646 | { |
3647 | int neg_size = info->main_save_offset - info->total_size; | |
3648 | loc = 0; | |
3649 | asm_fprintf (file, "\t{liu|lis} %s,%d\n\t{oril|ori} %s,%s,%d\n", | |
3650 | reg_names[0], (neg_size >> 16) & 0xffff, | |
3651 | reg_names[0], reg_names[0], neg_size & 0xffff); | |
979721f8 | 3652 | |
b6c9286a MM |
3653 | asm_fprintf (file, "\t{sf|subf} %s,%s,%s\n", reg_names[0], reg_names[0], |
3654 | reg_names[1]); | |
3655 | ||
3656 | for (regno = 3; size > 0; regno++, size -= reg_size, loc -= reg_size) | |
3657 | asm_fprintf (file, load_reg, reg_names[regno], loc, reg_names[0]); | |
3658 | } | |
3659 | } | |
3660 | } | |
3661 | #endif | |
3662 | ||
3663 | ||
1875cc88 JW |
3664 | /* If TARGET_MINIMAL_TOC, and the constant pool is needed, then load the |
3665 | TOC_TABLE address into register 30. */ | |
4697a36c | 3666 | if (TARGET_TOC && TARGET_MINIMAL_TOC && get_pool_size () != 0) |
c7ca610e | 3667 | rs6000_output_load_toc_table (file); |
4697a36c | 3668 | |
b6c9286a MM |
3669 | if (DEFAULT_ABI == ABI_NT) |
3670 | { | |
3671 | assemble_name (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); | |
3672 | fputs (".b:\n", file); | |
3daf36a4 | 3673 | } |
9878760c RK |
3674 | } |
3675 | ||
3676 | /* Write function epilogue. */ | |
3677 | ||
3678 | void | |
3679 | output_epilog (file, size) | |
3680 | FILE *file; | |
3681 | int size; | |
3682 | { | |
4697a36c | 3683 | rs6000_stack_t *info = rs6000_stack_info (); |
8f802bfb | 3684 | char *load_reg = (TARGET_32BIT) ? "\t{l|lwz} %s,%d(%s)\n" : "\tld %s,%d(%s)\n"; |
9878760c | 3685 | rtx insn = get_last_insn (); |
979721f8 MM |
3686 | int sp_reg = 1; |
3687 | int sp_offset = 0; | |
5b5040b9 | 3688 | int i; |
9878760c | 3689 | |
9878760c RK |
3690 | /* If the last insn was a BARRIER, we don't have to write anything except |
3691 | the trace table. */ | |
3692 | if (GET_CODE (insn) == NOTE) | |
3693 | insn = prev_nonnote_insn (insn); | |
3694 | if (insn == 0 || GET_CODE (insn) != BARRIER) | |
3695 | { | |
3696 | /* If we have a frame pointer, a call to alloca, or a large stack | |
3697 | frame, restore the old stack pointer using the backchain. Otherwise, | |
3698 | we know what size to update it with. */ | |
3699 | if (frame_pointer_needed || current_function_calls_alloca | |
4697a36c | 3700 | || info->total_size > 32767) |
979721f8 MM |
3701 | { |
3702 | /* Under V.4, don't reset the stack pointer until after we're done | |
3703 | loading the saved registers. */ | |
c81bebd7 | 3704 | if (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) |
979721f8 MM |
3705 | sp_reg = 11; |
3706 | ||
3707 | asm_fprintf (file, load_reg, reg_names[sp_reg], 0, reg_names[1]); | |
3708 | } | |
4697a36c MM |
3709 | else if (info->push_p) |
3710 | { | |
c81bebd7 | 3711 | if (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) |
979721f8 MM |
3712 | sp_offset = info->total_size; |
3713 | else if (TARGET_NEW_MNEMONICS) | |
4697a36c MM |
3714 | asm_fprintf (file, "\taddi %s,%s,%d\n", reg_names[1], reg_names[1], info->total_size); |
3715 | else | |
3716 | asm_fprintf (file, "\tcal %s,%d(%s)\n", reg_names[1], info->total_size, reg_names[1]); | |
3717 | } | |
9878760c | 3718 | |
b4ac57ab | 3719 | /* Get the old lr if we saved it. */ |
4697a36c | 3720 | if (info->lr_save_p) |
979721f8 | 3721 | asm_fprintf (file, load_reg, reg_names[0], info->lr_save_offset + sp_offset, reg_names[sp_reg]); |
9878760c RK |
3722 | |
3723 | /* Get the old cr if we saved it. */ | |
4697a36c | 3724 | if (info->cr_save_p) |
979721f8 | 3725 | asm_fprintf (file, load_reg, reg_names[12], info->cr_save_offset + sp_offset, reg_names[sp_reg]); |
9878760c | 3726 | |
b4ac57ab | 3727 | /* Set LR here to try to overlap restores below. */ |
4697a36c MM |
3728 | if (info->lr_save_p) |
3729 | asm_fprintf (file, "\tmtlr %s\n", reg_names[0]); | |
b4ac57ab | 3730 | |
9878760c | 3731 | /* Restore gpr's. */ |
4697a36c | 3732 | if (! TARGET_MULTIPLE || info->first_gp_reg_save == 31 || TARGET_64BIT) |
85638c0d | 3733 | { |
4697a36c | 3734 | int regno = info->first_gp_reg_save; |
979721f8 | 3735 | int loc = info->gp_save_offset + sp_offset; |
8f802bfb | 3736 | int reg_size = (TARGET_32BIT) ? 4 : 8; |
85638c0d | 3737 | |
4697a36c | 3738 | for ( ; regno < 32; regno++, loc += reg_size) |
979721f8 | 3739 | asm_fprintf (file, load_reg, reg_names[regno], loc, reg_names[sp_reg]); |
85638c0d RK |
3740 | } |
3741 | ||
4697a36c MM |
3742 | else if (info->first_gp_reg_save != 32) |
3743 | asm_fprintf (file, "\t{lm|lmw} %s,%d(%s)\n", | |
3744 | reg_names[info->first_gp_reg_save], | |
979721f8 MM |
3745 | info->gp_save_offset + sp_offset, |
3746 | reg_names[sp_reg]); | |
9878760c | 3747 | |
b4ac57ab | 3748 | /* Restore fpr's if we can do it without calling a function. */ |
4697a36c MM |
3749 | if (FP_SAVE_INLINE (info->first_fp_reg_save)) |
3750 | { | |
3751 | int regno = info->first_fp_reg_save; | |
979721f8 | 3752 | int loc = info->fp_save_offset + sp_offset; |
4697a36c MM |
3753 | |
3754 | for ( ; regno < 64; regno++, loc += 8) | |
979721f8 | 3755 | asm_fprintf (file, "\tlfd %s,%d(%s)\n", reg_names[regno], loc, reg_names[sp_reg]); |
4697a36c | 3756 | } |
9878760c | 3757 | |
28edebac RK |
3758 | /* If we saved cr, restore it here. Just those of cr2, cr3, and cr4 |
3759 | that were used. */ | |
4697a36c MM |
3760 | if (info->cr_save_p) |
3761 | asm_fprintf (file, "\tmtcrf %d,%s\n", | |
85638c0d RK |
3762 | (regs_ever_live[70] != 0) * 0x20 |
3763 | + (regs_ever_live[71] != 0) * 0x10 | |
4697a36c | 3764 | + (regs_ever_live[72] != 0) * 0x8, reg_names[12]); |
9878760c | 3765 | |
979721f8 MM |
3766 | /* If this is V.4, unwind the stack pointer after all of the loads have been done */ |
3767 | if (sp_offset) | |
3768 | { | |
3769 | if (TARGET_NEW_MNEMONICS) | |
3770 | asm_fprintf (file, "\taddi %s,%s,%d\n", reg_names[1], reg_names[1], sp_offset); | |
3771 | else | |
3772 | asm_fprintf (file, "\tcal %s,%d(%s)\n", reg_names[1], sp_offset, reg_names[1]); | |
3773 | } | |
3774 | else if (sp_reg != 1) | |
3775 | asm_fprintf (file, "\tmr %s,%s\n", reg_names[1], reg_names[sp_reg]); | |
3776 | ||
b4ac57ab RS |
3777 | /* If we have to restore more than two FP registers, branch to the |
3778 | restore function. It will return to our caller. */ | |
4697a36c MM |
3779 | if (info->first_fp_reg_save != 64 && !FP_SAVE_INLINE (info->first_fp_reg_save)) |
3780 | asm_fprintf (file, "\tb %s%d%s\n", RESTORE_FP_PREFIX, | |
3781 | info->first_fp_reg_save - 32, RESTORE_FP_SUFFIX); | |
b4ac57ab | 3782 | else |
85638c0d | 3783 | asm_fprintf (file, "\t{br|blr}\n"); |
9878760c | 3784 | } |
b4ac57ab | 3785 | |
9b30bae2 | 3786 | /* Output a traceback table here. See /usr/include/sys/debug.h for info |
314fc5a9 ILT |
3787 | on its format. |
3788 | ||
3789 | We don't output a traceback table if -finhibit-size-directive was | |
3790 | used. The documentation for -finhibit-size-directive reads | |
3791 | ``don't output a @code{.size} assembler directive, or anything | |
3792 | else that would cause trouble if the function is split in the | |
3793 | middle, and the two halves are placed at locations far apart in | |
3794 | memory.'' The traceback table has this property, since it | |
3795 | includes the offset from the start of the function to the | |
4d30c363 MM |
3796 | traceback table itself. |
3797 | ||
3798 | System V.4 Powerpc's (and the embedded ABI derived from it) use a | |
b6c9286a MM |
3799 | different traceback table. */ |
3800 | if (DEFAULT_ABI == ABI_AIX && ! flag_inhibit_size_directive) | |
9b30bae2 | 3801 | { |
314fc5a9 ILT |
3802 | char *fname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); |
3803 | int fixed_parms, float_parms, parm_info; | |
3804 | int i; | |
3805 | ||
b6c9286a MM |
3806 | while (*fname == '.') /* V.4 encodes . in the name */ |
3807 | fname++; | |
3808 | ||
314fc5a9 ILT |
3809 | /* Need label immediately before tbtab, so we can compute its offset |
3810 | from the function start. */ | |
3811 | if (*fname == '*') | |
3812 | ++fname; | |
3813 | ASM_OUTPUT_INTERNAL_LABEL_PREFIX (file, "LT"); | |
3814 | ASM_OUTPUT_LABEL (file, fname); | |
3815 | ||
3816 | /* The .tbtab pseudo-op can only be used for the first eight | |
3817 | expressions, since it can't handle the possibly variable | |
3818 | length fields that follow. However, if you omit the optional | |
3819 | fields, the assembler outputs zeros for all optional fields | |
3820 | anyways, giving each variable length field is minimum length | |
3821 | (as defined in sys/debug.h). Thus we can not use the .tbtab | |
3822 | pseudo-op at all. */ | |
3823 | ||
3824 | /* An all-zero word flags the start of the tbtab, for debuggers | |
3825 | that have to find it by searching forward from the entry | |
3826 | point or from the current pc. */ | |
19d2d16f | 3827 | fputs ("\t.long 0\n", file); |
314fc5a9 ILT |
3828 | |
3829 | /* Tbtab format type. Use format type 0. */ | |
19d2d16f | 3830 | fputs ("\t.byte 0,", file); |
314fc5a9 ILT |
3831 | |
3832 | /* Language type. Unfortunately, there doesn't seem to be any | |
3833 | official way to get this info, so we use language_string. C | |
3834 | is 0. C++ is 9. No number defined for Obj-C, so use the | |
3835 | value for C for now. */ | |
3836 | if (! strcmp (language_string, "GNU C") | |
3837 | || ! strcmp (language_string, "GNU Obj-C")) | |
3838 | i = 0; | |
3839 | else if (! strcmp (language_string, "GNU F77")) | |
3840 | i = 1; | |
3841 | else if (! strcmp (language_string, "GNU Ada")) | |
3842 | i = 3; | |
3843 | else if (! strcmp (language_string, "GNU PASCAL")) | |
3844 | i = 2; | |
3845 | else if (! strcmp (language_string, "GNU C++")) | |
3846 | i = 9; | |
3847 | else | |
3848 | abort (); | |
3849 | fprintf (file, "%d,", i); | |
3850 | ||
3851 | /* 8 single bit fields: global linkage (not set for C extern linkage, | |
3852 | apparently a PL/I convention?), out-of-line epilogue/prologue, offset | |
3853 | from start of procedure stored in tbtab, internal function, function | |
3854 | has controlled storage, function has no toc, function uses fp, | |
3855 | function logs/aborts fp operations. */ | |
3856 | /* Assume that fp operations are used if any fp reg must be saved. */ | |
4697a36c | 3857 | fprintf (file, "%d,", (1 << 5) | ((info->first_fp_reg_save != 64) << 1)); |
314fc5a9 ILT |
3858 | |
3859 | /* 6 bitfields: function is interrupt handler, name present in | |
3860 | proc table, function calls alloca, on condition directives | |
3861 | (controls stack walks, 3 bits), saves condition reg, saves | |
3862 | link reg. */ | |
3863 | /* The `function calls alloca' bit seems to be set whenever reg 31 is | |
3864 | set up as a frame pointer, even when there is no alloca call. */ | |
3865 | fprintf (file, "%d,", | |
3866 | ((1 << 6) | (frame_pointer_needed << 5) | |
4697a36c | 3867 | | (info->cr_save_p << 1) | (info->lr_save_p))); |
314fc5a9 ILT |
3868 | |
3869 | /* 3 bitfields: saves backchain, spare bit, number of fpr saved | |
3870 | (6 bits). */ | |
3871 | fprintf (file, "%d,", | |
4697a36c | 3872 | (info->push_p << 7) | (64 - info->first_fp_reg_save)); |
314fc5a9 ILT |
3873 | |
3874 | /* 2 bitfields: spare bits (2 bits), number of gpr saved (6 bits). */ | |
3875 | fprintf (file, "%d,", (32 - first_reg_to_save ())); | |
3876 | ||
3877 | { | |
3878 | /* Compute the parameter info from the function decl argument | |
3879 | list. */ | |
3880 | tree decl; | |
3881 | int next_parm_info_bit; | |
3882 | ||
3883 | next_parm_info_bit = 31; | |
3884 | parm_info = 0; | |
3885 | fixed_parms = 0; | |
3886 | float_parms = 0; | |
3887 | ||
3888 | for (decl = DECL_ARGUMENTS (current_function_decl); | |
3889 | decl; decl = TREE_CHAIN (decl)) | |
3890 | { | |
3891 | rtx parameter = DECL_INCOMING_RTL (decl); | |
3892 | enum machine_mode mode = GET_MODE (parameter); | |
3893 | ||
3894 | if (GET_CODE (parameter) == REG) | |
3895 | { | |
3896 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
3897 | { | |
3898 | int bits; | |
3899 | ||
3900 | float_parms++; | |
3901 | ||
3902 | if (mode == SFmode) | |
3903 | bits = 0x2; | |
3904 | else if (mode == DFmode) | |
3905 | bits = 0x3; | |
3906 | else | |
3907 | abort (); | |
3908 | ||
3909 | /* If only one bit will fit, don't or in this entry. */ | |
3910 | if (next_parm_info_bit > 0) | |
3911 | parm_info |= (bits << (next_parm_info_bit - 1)); | |
3912 | next_parm_info_bit -= 2; | |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | fixed_parms += ((GET_MODE_SIZE (mode) | |
3917 | + (UNITS_PER_WORD - 1)) | |
3918 | / UNITS_PER_WORD); | |
3919 | next_parm_info_bit -= 1; | |
3920 | } | |
3921 | } | |
3922 | } | |
3923 | } | |
3924 | ||
3925 | /* Number of fixed point parameters. */ | |
3926 | /* This is actually the number of words of fixed point parameters; thus | |
3927 | an 8 byte struct counts as 2; and thus the maximum value is 8. */ | |
3928 | fprintf (file, "%d,", fixed_parms); | |
3929 | ||
3930 | /* 2 bitfields: number of floating point parameters (7 bits), parameters | |
3931 | all on stack. */ | |
3932 | /* This is actually the number of fp registers that hold parameters; | |
3933 | and thus the maximum value is 13. */ | |
3934 | /* Set parameters on stack bit if parameters are not in their original | |
3935 | registers, regardless of whether they are on the stack? Xlc | |
3936 | seems to set the bit when not optimizing. */ | |
3937 | fprintf (file, "%d\n", ((float_parms << 1) | (! optimize))); | |
3938 | ||
3939 | /* Optional fields follow. Some are variable length. */ | |
3940 | ||
3941 | /* Parameter types, left adjusted bit fields: 0 fixed, 10 single float, | |
3942 | 11 double float. */ | |
3943 | /* There is an entry for each parameter in a register, in the order that | |
3944 | they occur in the parameter list. Any intervening arguments on the | |
3945 | stack are ignored. If the list overflows a long (max possible length | |
3946 | 34 bits) then completely leave off all elements that don't fit. */ | |
3947 | /* Only emit this long if there was at least one parameter. */ | |
3948 | if (fixed_parms || float_parms) | |
3949 | fprintf (file, "\t.long %d\n", parm_info); | |
3950 | ||
3951 | /* Offset from start of code to tb table. */ | |
19d2d16f | 3952 | fputs ("\t.long ", file); |
314fc5a9 ILT |
3953 | ASM_OUTPUT_INTERNAL_LABEL_PREFIX (file, "LT"); |
3954 | RS6000_OUTPUT_BASENAME (file, fname); | |
19d2d16f | 3955 | fputs ("-.", file); |
314fc5a9 | 3956 | RS6000_OUTPUT_BASENAME (file, fname); |
19d2d16f | 3957 | putc ('\n', file); |
314fc5a9 ILT |
3958 | |
3959 | /* Interrupt handler mask. */ | |
3960 | /* Omit this long, since we never set the interrupt handler bit | |
3961 | above. */ | |
3962 | ||
3963 | /* Number of CTL (controlled storage) anchors. */ | |
3964 | /* Omit this long, since the has_ctl bit is never set above. */ | |
3965 | ||
3966 | /* Displacement into stack of each CTL anchor. */ | |
3967 | /* Omit this list of longs, because there are no CTL anchors. */ | |
3968 | ||
3969 | /* Length of function name. */ | |
3970 | fprintf (file, "\t.short %d\n", strlen (fname)); | |
3971 | ||
3972 | /* Function name. */ | |
3973 | assemble_string (fname, strlen (fname)); | |
3974 | ||
3975 | /* Register for alloca automatic storage; this is always reg 31. | |
3976 | Only emit this if the alloca bit was set above. */ | |
3977 | if (frame_pointer_needed) | |
19d2d16f | 3978 | fputs ("\t.byte 31\n", file); |
9b30bae2 | 3979 | } |
4697a36c | 3980 | |
b6c9286a MM |
3981 | if (DEFAULT_ABI == ABI_NT) |
3982 | { | |
3983 | RS6000_OUTPUT_BASENAME (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); | |
3984 | fputs (".e:\nFE_MOT_RESVD..", file); | |
3985 | RS6000_OUTPUT_BASENAME (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); | |
3986 | fputs (":\n", file); | |
3987 | } | |
9878760c RK |
3988 | } |
3989 | \f | |
3990 | /* Output a TOC entry. We derive the entry name from what is | |
3991 | being written. */ | |
3992 | ||
3993 | void | |
3994 | output_toc (file, x, labelno) | |
3995 | FILE *file; | |
3996 | rtx x; | |
3997 | int labelno; | |
3998 | { | |
3999 | char buf[256]; | |
4000 | char *name = buf; | |
b6c9286a | 4001 | char *real_name; |
9878760c RK |
4002 | rtx base = x; |
4003 | int offset = 0; | |
4004 | ||
4697a36c MM |
4005 | if (TARGET_NO_TOC) |
4006 | abort (); | |
4007 | ||
ff1720ed RK |
4008 | /* if we're going to put a double constant in the TOC, make sure it's |
4009 | aligned properly when strict alignment is on. */ | |
4010 | if (GET_CODE (x) == CONST_DOUBLE | |
4011 | && STRICT_ALIGNMENT | |
4012 | && GET_MODE (x) == DFmode | |
4013 | && ! (TARGET_NO_FP_IN_TOC && ! TARGET_MINIMAL_TOC)) { | |
4014 | ASM_OUTPUT_ALIGN (file, 3); | |
4015 | } | |
4016 | ||
4017 | ||
b6c9286a | 4018 | if (TARGET_ELF && TARGET_MINIMAL_TOC) |
d14a6d05 MM |
4019 | { |
4020 | ASM_OUTPUT_INTERNAL_LABEL_PREFIX (file, "LC"); | |
4021 | fprintf (file, "%d = .-", labelno); | |
4022 | ASM_OUTPUT_INTERNAL_LABEL_PREFIX (file, "LCTOC"); | |
19d2d16f | 4023 | fputs ("1\n", file); |
d14a6d05 MM |
4024 | } |
4025 | else | |
d14a6d05 | 4026 | ASM_OUTPUT_INTERNAL_LABEL (file, "LC", labelno); |
9878760c | 4027 | |
37c37a57 RK |
4028 | /* Handle FP constants specially. Note that if we have a minimal |
4029 | TOC, things we put here aren't actually in the TOC, so we can allow | |
4030 | FP constants. */ | |
042259f2 | 4031 | if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) == DFmode |
37c37a57 | 4032 | && ! (TARGET_NO_FP_IN_TOC && ! TARGET_MINIMAL_TOC)) |
9878760c | 4033 | { |
042259f2 DE |
4034 | REAL_VALUE_TYPE rv; |
4035 | long k[2]; | |
0adc764e | 4036 | |
042259f2 DE |
4037 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); |
4038 | REAL_VALUE_TO_TARGET_DOUBLE (rv, k); | |
1875cc88 | 4039 | if (TARGET_MINIMAL_TOC) |
042259f2 | 4040 | fprintf (file, "\t.long %ld\n\t.long %ld\n", k[0], k[1]); |
1875cc88 | 4041 | else |
0adc764e | 4042 | fprintf (file, "\t.tc FD_%lx_%lx[TC],%ld,%ld\n", |
042259f2 | 4043 | k[0], k[1], k[0], k[1]); |
9878760c RK |
4044 | return; |
4045 | } | |
4046 | else if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) == SFmode | |
37c37a57 | 4047 | && ! (TARGET_NO_FP_IN_TOC && ! TARGET_MINIMAL_TOC)) |
9878760c | 4048 | { |
042259f2 DE |
4049 | REAL_VALUE_TYPE rv; |
4050 | long l; | |
9878760c | 4051 | |
042259f2 DE |
4052 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); |
4053 | REAL_VALUE_TO_TARGET_SINGLE (rv, l); | |
4054 | ||
4055 | if (TARGET_MINIMAL_TOC) | |
1883e716 | 4056 | fprintf (file, "\t.long %ld\n", l); |
042259f2 | 4057 | else |
1883e716 | 4058 | fprintf (file, "\t.tc FS_%lx[TC],%ld\n", l, l); |
042259f2 DE |
4059 | return; |
4060 | } | |
4061 | else if (GET_MODE (x) == DImode | |
4062 | && (GET_CODE (x) == CONST_INT || GET_CODE (x) == CONST_DOUBLE) | |
4063 | && ! (TARGET_NO_FP_IN_TOC && ! TARGET_MINIMAL_TOC)) | |
4064 | { | |
4065 | HOST_WIDE_INT low; | |
4066 | HOST_WIDE_INT high; | |
4067 | ||
4068 | if (GET_CODE (x) == CONST_DOUBLE) | |
4069 | { | |
4070 | low = CONST_DOUBLE_LOW (x); | |
4071 | high = CONST_DOUBLE_HIGH (x); | |
4072 | } | |
4073 | else | |
4074 | #if HOST_BITS_PER_WIDE_INT == 32 | |
4075 | { | |
4076 | low = INTVAL (x); | |
4077 | high = (low < 0) ? ~0 : 0; | |
4078 | } | |
4079 | #else | |
4080 | { | |
4081 | low = INTVAL (x) & 0xffffffff; | |
4082 | high = (HOST_WIDE_INT) INTVAL (x) >> 32; | |
4083 | } | |
4084 | #endif | |
9878760c | 4085 | |
1875cc88 | 4086 | if (TARGET_MINIMAL_TOC) |
1883e716 | 4087 | fprintf (file, "\t.long %ld\n\t.long %ld\n", (long)high, (long)low); |
1875cc88 | 4088 | else |
042259f2 | 4089 | fprintf (file, "\t.tc ID_%lx_%lx[TC],%ld,%ld\n", |
1883e716 | 4090 | (long)high, (long)low, (long)high, (long)low); |
9878760c RK |
4091 | return; |
4092 | } | |
4093 | ||
4094 | if (GET_CODE (x) == CONST) | |
4095 | { | |
4096 | base = XEXP (XEXP (x, 0), 0); | |
4097 | offset = INTVAL (XEXP (XEXP (x, 0), 1)); | |
4098 | } | |
4099 | ||
4100 | if (GET_CODE (base) == SYMBOL_REF) | |
4101 | name = XSTR (base, 0); | |
4102 | else if (GET_CODE (base) == LABEL_REF) | |
4103 | ASM_GENERATE_INTERNAL_LABEL (buf, "L", CODE_LABEL_NUMBER (XEXP (base, 0))); | |
4104 | else if (GET_CODE (base) == CODE_LABEL) | |
4105 | ASM_GENERATE_INTERNAL_LABEL (buf, "L", CODE_LABEL_NUMBER (base)); | |
4106 | else | |
4107 | abort (); | |
4108 | ||
2e4eb9b0 | 4109 | STRIP_NAME_ENCODING (real_name, name); |
1875cc88 | 4110 | if (TARGET_MINIMAL_TOC) |
19d2d16f | 4111 | fputs ("\t.long ", file); |
1875cc88 JW |
4112 | else |
4113 | { | |
b6c9286a | 4114 | fprintf (file, "\t.tc %s", real_name); |
9878760c | 4115 | |
1875cc88 JW |
4116 | if (offset < 0) |
4117 | fprintf (file, ".N%d", - offset); | |
4118 | else if (offset) | |
4119 | fprintf (file, ".P%d", offset); | |
9878760c | 4120 | |
19d2d16f | 4121 | fputs ("[TC],", file); |
1875cc88 | 4122 | } |
581bc4de MM |
4123 | |
4124 | /* Currently C++ toc references to vtables can be emitted before it | |
4125 | is decided whether the vtable is public or private. If this is | |
4126 | the case, then the linker will eventually complain that there is | |
4127 | a TOC reference to an unknown section. Thus, for vtables only, | |
4128 | we emit the TOC reference to reference the symbol and not the | |
4129 | section. */ | |
3807773b | 4130 | if (!strncmp ("_vt.", name, 4)) |
581bc4de | 4131 | { |
3807773b | 4132 | RS6000_OUTPUT_BASENAME (file, name); |
581bc4de MM |
4133 | if (offset < 0) |
4134 | fprintf (file, "%d", offset); | |
4135 | else if (offset > 0) | |
4136 | fprintf (file, "+%d", offset); | |
4137 | } | |
4138 | else | |
4139 | output_addr_const (file, x); | |
19d2d16f | 4140 | putc ('\n', file); |
9878760c RK |
4141 | } |
4142 | \f | |
4143 | /* Output an assembler pseudo-op to write an ASCII string of N characters | |
4144 | starting at P to FILE. | |
4145 | ||
4146 | On the RS/6000, we have to do this using the .byte operation and | |
4147 | write out special characters outside the quoted string. | |
4148 | Also, the assembler is broken; very long strings are truncated, | |
4149 | so we must artificially break them up early. */ | |
4150 | ||
4151 | void | |
4152 | output_ascii (file, p, n) | |
4153 | FILE *file; | |
4154 | char *p; | |
4155 | int n; | |
4156 | { | |
4157 | char c; | |
4158 | int i, count_string; | |
4159 | char *for_string = "\t.byte \""; | |
4160 | char *for_decimal = "\t.byte "; | |
4161 | char *to_close = NULL; | |
4162 | ||
4163 | count_string = 0; | |
4164 | for (i = 0; i < n; i++) | |
4165 | { | |
4166 | c = *p++; | |
4167 | if (c >= ' ' && c < 0177) | |
4168 | { | |
4169 | if (for_string) | |
4170 | fputs (for_string, file); | |
4171 | putc (c, file); | |
4172 | ||
4173 | /* Write two quotes to get one. */ | |
4174 | if (c == '"') | |
4175 | { | |
4176 | putc (c, file); | |
4177 | ++count_string; | |
4178 | } | |
4179 | ||
4180 | for_string = NULL; | |
4181 | for_decimal = "\"\n\t.byte "; | |
4182 | to_close = "\"\n"; | |
4183 | ++count_string; | |
4184 | ||
4185 | if (count_string >= 512) | |
4186 | { | |
4187 | fputs (to_close, file); | |
4188 | ||
4189 | for_string = "\t.byte \""; | |
4190 | for_decimal = "\t.byte "; | |
4191 | to_close = NULL; | |
4192 | count_string = 0; | |
4193 | } | |
4194 | } | |
4195 | else | |
4196 | { | |
4197 | if (for_decimal) | |
4198 | fputs (for_decimal, file); | |
4199 | fprintf (file, "%d", c); | |
4200 | ||
4201 | for_string = "\n\t.byte \""; | |
4202 | for_decimal = ", "; | |
4203 | to_close = "\n"; | |
4204 | count_string = 0; | |
4205 | } | |
4206 | } | |
4207 | ||
4208 | /* Now close the string if we have written one. Then end the line. */ | |
4209 | if (to_close) | |
4210 | fprintf (file, to_close); | |
4211 | } | |
4212 | \f | |
4213 | /* Generate a unique section name for FILENAME for a section type | |
4214 | represented by SECTION_DESC. Output goes into BUF. | |
4215 | ||
4216 | SECTION_DESC can be any string, as long as it is different for each | |
4217 | possible section type. | |
4218 | ||
4219 | We name the section in the same manner as xlc. The name begins with an | |
4220 | underscore followed by the filename (after stripping any leading directory | |
11e5fe42 RK |
4221 | names) with the last period replaced by the string SECTION_DESC. If |
4222 | FILENAME does not contain a period, SECTION_DESC is appended to the end of | |
4223 | the name. */ | |
9878760c RK |
4224 | |
4225 | void | |
4226 | rs6000_gen_section_name (buf, filename, section_desc) | |
4227 | char **buf; | |
4228 | char *filename; | |
4229 | char *section_desc; | |
4230 | { | |
11e5fe42 | 4231 | char *q, *after_last_slash, *last_period; |
9878760c RK |
4232 | char *p; |
4233 | int len; | |
9878760c RK |
4234 | |
4235 | after_last_slash = filename; | |
4236 | for (q = filename; *q; q++) | |
11e5fe42 RK |
4237 | { |
4238 | if (*q == '/') | |
4239 | after_last_slash = q + 1; | |
4240 | else if (*q == '.') | |
4241 | last_period = q; | |
4242 | } | |
9878760c | 4243 | |
11e5fe42 | 4244 | len = strlen (after_last_slash) + strlen (section_desc) + 2; |
9878760c RK |
4245 | *buf = (char *) permalloc (len); |
4246 | ||
4247 | p = *buf; | |
4248 | *p++ = '_'; | |
4249 | ||
4250 | for (q = after_last_slash; *q; q++) | |
4251 | { | |
11e5fe42 | 4252 | if (q == last_period) |
9878760c RK |
4253 | { |
4254 | strcpy (p, section_desc); | |
4255 | p += strlen (section_desc); | |
9878760c RK |
4256 | } |
4257 | ||
4258 | else if (isalnum (*q)) | |
4259 | *p++ = *q; | |
4260 | } | |
4261 | ||
11e5fe42 | 4262 | if (last_period == 0) |
9878760c RK |
4263 | strcpy (p, section_desc); |
4264 | else | |
4265 | *p = '\0'; | |
4266 | } | |
e165f3f0 RK |
4267 | \f |
4268 | /* Write function profiler code. */ | |
4269 | ||
4270 | void | |
4271 | output_function_profiler (file, labelno) | |
4272 | FILE *file; | |
4273 | int labelno; | |
4274 | { | |
4275 | /* The last used parameter register. */ | |
4276 | int last_parm_reg; | |
4277 | int i, j; | |
3daf36a4 | 4278 | char buf[100]; |
e165f3f0 | 4279 | |
b6c9286a MM |
4280 | if (DEFAULT_ABI != ABI_AIX) |
4281 | abort (); | |
4282 | ||
e165f3f0 RK |
4283 | /* Set up a TOC entry for the profiler label. */ |
4284 | toc_section (); | |
3daf36a4 ILT |
4285 | ASM_OUTPUT_INTERNAL_LABEL (file, "LPC", labelno); |
4286 | ASM_GENERATE_INTERNAL_LABEL (buf, "LP", labelno); | |
35fc1624 | 4287 | if (TARGET_MINIMAL_TOC) |
3daf36a4 | 4288 | { |
19d2d16f | 4289 | fputs ("\t.long ", file); |
3daf36a4 | 4290 | assemble_name (file, buf); |
19d2d16f | 4291 | putc ('\n', file); |
3daf36a4 | 4292 | } |
35fc1624 | 4293 | else |
3daf36a4 | 4294 | { |
19d2d16f | 4295 | fputs ("\t.tc\t", file); |
3daf36a4 | 4296 | assemble_name (file, buf); |
19d2d16f | 4297 | fputs ("[TC],", file); |
3daf36a4 | 4298 | assemble_name (file, buf); |
19d2d16f | 4299 | putc ('\n', file); |
3daf36a4 | 4300 | } |
e165f3f0 RK |
4301 | text_section (); |
4302 | ||
4303 | /* Figure out last used parameter register. The proper thing to do is | |
4304 | to walk incoming args of the function. A function might have live | |
4305 | parameter registers even if it has no incoming args. */ | |
4306 | ||
4307 | for (last_parm_reg = 10; | |
4308 | last_parm_reg > 2 && ! regs_ever_live [last_parm_reg]; | |
4309 | last_parm_reg--) | |
4310 | ; | |
4311 | ||
4312 | /* Save parameter registers in regs 23-30. Don't overwrite reg 31, since | |
4313 | it might be set up as the frame pointer. */ | |
4314 | ||
4315 | for (i = 3, j = 30; i <= last_parm_reg; i++, j--) | |
19d2d16f | 4316 | asm_fprintf (file, "\tmr %d,%d\n", j, i); |
e165f3f0 RK |
4317 | |
4318 | /* Load location address into r3, and call mcount. */ | |
4319 | ||
3daf36a4 | 4320 | ASM_GENERATE_INTERNAL_LABEL (buf, "LPC", labelno); |
19d2d16f | 4321 | asm_fprintf (file, "\t{l|lwz} %s,", reg_names[3]); |
3daf36a4 | 4322 | assemble_name (file, buf); |
9c849d2a | 4323 | asm_fprintf (file, "(%s)\n\tbl %s\n", reg_names[2], RS6000_MCOUNT); |
e165f3f0 RK |
4324 | |
4325 | /* Restore parameter registers. */ | |
4326 | ||
4327 | for (i = 3, j = 30; i <= last_parm_reg; i++, j--) | |
19d2d16f | 4328 | asm_fprintf (file, "\tmr %d,%d\n", i, j); |
e165f3f0 | 4329 | } |
a251ffd0 TG |
4330 | |
4331 | /* Adjust the cost of a scheduling dependency. Return the new cost of | |
4332 | a dependency LINK or INSN on DEP_INSN. COST is the current cost. */ | |
4333 | ||
4334 | int | |
a06faf84 | 4335 | rs6000_adjust_cost (insn, link, dep_insn, cost) |
a251ffd0 TG |
4336 | rtx insn; |
4337 | rtx link; | |
4338 | rtx dep_insn; | |
4339 | int cost; | |
4340 | { | |
4341 | if (! recog_memoized (insn)) | |
4342 | return 0; | |
4343 | ||
4344 | if (REG_NOTE_KIND (link) != 0) | |
4345 | return 0; | |
4346 | ||
4347 | if (REG_NOTE_KIND (link) == 0) | |
4348 | { | |
4349 | /* Data dependency; DEP_INSN writes a register that INSN reads some | |
4350 | cycles later. */ | |
4351 | ||
4352 | /* Tell the first scheduling pass about the latency between a mtctr | |
4353 | and bctr (and mtlr and br/blr). The first scheduling pass will not | |
4354 | know about this latency since the mtctr instruction, which has the | |
4355 | latency associated to it, will be generated by reload. */ | |
4356 | if (get_attr_type (insn) == TYPE_JMPREG) | |
4357 | return TARGET_POWER ? 5 : 4; | |
4358 | ||
4359 | /* Fall out to return default cost. */ | |
4360 | } | |
4361 | ||
4362 | return cost; | |
4363 | } | |
b6c9286a MM |
4364 | |
4365 | /* Return how many instructions the machine can issue per cycle */ | |
4366 | int get_issue_rate() | |
4367 | { | |
4368 | switch (rs6000_cpu_attr) { | |
4369 | case CPU_RIOS1: | |
4370 | return 3; /* ? */ | |
4371 | case CPU_RIOS2: | |
4372 | return 4; | |
4373 | case CPU_PPC601: | |
4374 | return 3; /* ? */ | |
b6c9286a MM |
4375 | case CPU_PPC603: |
4376 | return 2; | |
4377 | case CPU_PPC604: | |
4378 | return 4; | |
4379 | case CPU_PPC620: | |
4380 | return 4; | |
4381 | default: | |
4382 | return 1; | |
4383 | } | |
4384 | } | |
4385 | ||
b6c9286a MM |
4386 | |
4387 | \f | |
4388 | /* Output assembler code for a block containing the constant parts | |
4389 | of a trampoline, leaving space for the variable parts. | |
4390 | ||
4391 | The trampoline should set the static chain pointer to value placed | |
4392 | into the trampoline and should branch to the specified routine. */ | |
4393 | ||
4394 | void | |
4395 | rs6000_trampoline_template (file) | |
4396 | FILE *file; | |
4397 | { | |
4398 | char *sc = reg_names[STATIC_CHAIN_REGNUM]; | |
4399 | char *r0 = reg_names[0]; | |
7c59dc5d | 4400 | char *r2 = reg_names[2]; |
b6c9286a MM |
4401 | |
4402 | switch (DEFAULT_ABI) | |
4403 | { | |
4404 | default: | |
4405 | abort (); | |
4406 | ||
4407 | /* Under AIX, this is not code at all, but merely a data area, | |
4408 | since that is the way all functions are called. The first word is | |
4409 | the address of the function, the second word is the TOC pointer (r2), | |
4410 | and the third word is the static chain value. */ | |
4411 | case ABI_AIX: | |
b6c9286a MM |
4412 | break; |
4413 | ||
4414 | ||
4415 | /* V.4/eabi function pointers are just a single pointer, so we need to | |
4416 | do the full gory code to load up the static chain. */ | |
4417 | case ABI_V4: | |
c81bebd7 | 4418 | case ABI_SOLARIS: |
b6c9286a | 4419 | case ABI_AIX_NODESC: |
b6c9286a MM |
4420 | break; |
4421 | ||
4422 | /* NT function pointers point to a two word area (real address, TOC) | |
4423 | which unfortunately does not include a static chain field. So we | |
7c59dc5d MM |
4424 | use the function field to point to ..LTRAMP1 and the toc field |
4425 | to point to the whole table. */ | |
b6c9286a | 4426 | case ABI_NT: |
7c59dc5d MM |
4427 | if (STATIC_CHAIN_REGNUM == 0 |
4428 | || STATIC_CHAIN_REGNUM == 2 | |
4429 | || TARGET_64BIT | |
4430 | || !TARGET_NEW_MNEMONICS) | |
b6c9286a MM |
4431 | abort (); |
4432 | ||
7c59dc5d MM |
4433 | fprintf (file, "\t.ualong 0\n"); /* offset 0 */ |
4434 | fprintf (file, "\t.ualong 0\n"); /* offset 4 */ | |
4435 | fprintf (file, "\t.ualong 0\n"); /* offset 8 */ | |
4436 | fprintf (file, "\t.ualong 0\n"); /* offset 12 */ | |
4437 | fprintf (file, "\t.ualong 0\n"); /* offset 16 */ | |
8bd04c56 | 4438 | fprintf (file, "..LTRAMP1..0:\n"); /* offset 20 */ |
7c59dc5d MM |
4439 | fprintf (file, "\tlwz %s,8(%s)\n", r0, r2); /* offset 24 */ |
4440 | fprintf (file, "\tlwz %s,12(%s)\n", sc, r2); /* offset 28 */ | |
4441 | fprintf (file, "\tmtctr %s\n", r0); /* offset 32 */ | |
4442 | fprintf (file, "\tlwz %s,16(%s)\n", r2, r2); /* offset 36 */ | |
4443 | fprintf (file, "\tbctr\n"); /* offset 40 */ | |
b6c9286a MM |
4444 | break; |
4445 | } | |
4446 | ||
4447 | return; | |
4448 | } | |
4449 | ||
4450 | /* Length in units of the trampoline for entering a nested function. */ | |
4451 | ||
4452 | int | |
4453 | rs6000_trampoline_size () | |
4454 | { | |
4455 | int ret = 0; | |
4456 | ||
4457 | switch (DEFAULT_ABI) | |
4458 | { | |
4459 | default: | |
4460 | abort (); | |
4461 | ||
4462 | case ABI_AIX: | |
8f802bfb | 4463 | ret = (TARGET_32BIT) ? 12 : 24; |
b6c9286a MM |
4464 | break; |
4465 | ||
4466 | case ABI_V4: | |
c81bebd7 | 4467 | case ABI_SOLARIS: |
b6c9286a | 4468 | case ABI_AIX_NODESC: |
03a7e1a5 | 4469 | ret = (TARGET_32BIT) ? 40 : 48; |
b6c9286a MM |
4470 | break; |
4471 | ||
4472 | case ABI_NT: | |
7c59dc5d | 4473 | ret = 20; |
b6c9286a MM |
4474 | break; |
4475 | } | |
4476 | ||
4477 | return ret; | |
4478 | } | |
4479 | ||
4480 | /* Emit RTL insns to initialize the variable parts of a trampoline. | |
4481 | FNADDR is an RTX for the address of the function's pure code. | |
4482 | CXT is an RTX for the static chain value for the function. */ | |
4483 | ||
4484 | void | |
4485 | rs6000_initialize_trampoline (addr, fnaddr, cxt) | |
4486 | rtx addr; | |
4487 | rtx fnaddr; | |
4488 | rtx cxt; | |
4489 | { | |
ac2a93a1 | 4490 | enum machine_mode pmode = Pmode; |
8bd04c56 MM |
4491 | int regsize = (TARGET_32BIT) ? 4 : 8; |
4492 | rtx ctx_reg = force_reg (pmode, cxt); | |
b6c9286a MM |
4493 | |
4494 | switch (DEFAULT_ABI) | |
4495 | { | |
4496 | default: | |
4497 | abort (); | |
4498 | ||
8bd04c56 MM |
4499 | /* Macros to shorten the code expansions below. */ |
4500 | #define MEM_DEREF(addr) gen_rtx (MEM, pmode, memory_address (pmode, addr)) | |
7c59dc5d MM |
4501 | #define MEM_PLUS(addr,offset) gen_rtx (MEM, pmode, memory_address (pmode, plus_constant (addr, offset))) |
4502 | ||
b6c9286a MM |
4503 | /* Under AIX, just build the 3 word function descriptor */ |
4504 | case ABI_AIX: | |
8bd04c56 MM |
4505 | { |
4506 | rtx fn_reg = gen_reg_rtx (pmode); | |
4507 | rtx toc_reg = gen_reg_rtx (pmode); | |
4508 | emit_move_insn (fn_reg, MEM_DEREF (fnaddr)); | |
4509 | emit_move_insn (toc_reg, MEM_PLUS (fnaddr, 4)); | |
4510 | emit_move_insn (MEM_DEREF (addr), fn_reg); | |
4511 | emit_move_insn (MEM_PLUS (addr, regsize), toc_reg); | |
4512 | emit_move_insn (MEM_PLUS (addr, 2*regsize), ctx_reg); | |
4513 | } | |
b6c9286a MM |
4514 | break; |
4515 | ||
eaf1bcf1 | 4516 | /* Under V.4/eabi, call __trampoline_setup to do the real work. */ |
b6c9286a | 4517 | case ABI_V4: |
c81bebd7 | 4518 | case ABI_SOLARIS: |
b6c9286a | 4519 | case ABI_AIX_NODESC: |
eaf1bcf1 MM |
4520 | emit_library_call (gen_rtx (SYMBOL_REF, SImode, "__trampoline_setup"), |
4521 | FALSE, VOIDmode, 4, | |
4522 | addr, pmode, | |
4523 | GEN_INT (rs6000_trampoline_size ()), SImode, | |
4524 | fnaddr, pmode, | |
4525 | ctx_reg, pmode); | |
b6c9286a MM |
4526 | break; |
4527 | ||
8bd04c56 MM |
4528 | /* Under NT, update the first word to point to the ..LTRAMP1..0 header, |
4529 | the second word will point to the whole trampoline, third-fifth words | |
7c59dc5d | 4530 | will then have the real address, static chain, and toc value. */ |
b6c9286a | 4531 | case ABI_NT: |
8bd04c56 MM |
4532 | { |
4533 | rtx tramp_reg = gen_reg_rtx (pmode); | |
4534 | rtx fn_reg = gen_reg_rtx (pmode); | |
4535 | rtx toc_reg = gen_reg_rtx (pmode); | |
4536 | ||
4537 | emit_move_insn (tramp_reg, gen_rtx (SYMBOL_REF, pmode, "..LTRAMP1..0")); | |
4538 | addr = force_reg (pmode, addr); | |
4539 | emit_move_insn (fn_reg, MEM_DEREF (fnaddr)); | |
4540 | emit_move_insn (toc_reg, MEM_PLUS (fnaddr, regsize)); | |
4541 | emit_move_insn (MEM_DEREF (addr), tramp_reg); | |
4542 | emit_move_insn (MEM_PLUS (addr, regsize), addr); | |
4543 | emit_move_insn (MEM_PLUS (addr, 2*regsize), fn_reg); | |
4544 | emit_move_insn (MEM_PLUS (addr, 3*regsize), ctx_reg); | |
4545 | emit_move_insn (MEM_PLUS (addr, 4*regsize), gen_rtx (REG, pmode, 2)); | |
4546 | } | |
b6c9286a MM |
4547 | break; |
4548 | } | |
4549 | ||
4550 | return; | |
4551 | } | |
7509c759 MM |
4552 | |
4553 | \f | |
4554 | /* If defined, a C expression whose value is nonzero if IDENTIFIER | |
4555 | with arguments ARGS is a valid machine specific attribute for DECL. | |
4556 | The attributes in ATTRIBUTES have previously been assigned to DECL. */ | |
4557 | ||
4558 | int | |
4559 | rs6000_valid_decl_attribute_p (decl, attributes, identifier, args) | |
4560 | tree decl; | |
4561 | tree attributes; | |
4562 | tree identifier; | |
4563 | tree args; | |
4564 | { | |
4565 | return 0; | |
4566 | } | |
4567 | ||
4568 | /* If defined, a C expression whose value is nonzero if IDENTIFIER | |
4569 | with arguments ARGS is a valid machine specific attribute for TYPE. | |
4570 | The attributes in ATTRIBUTES have previously been assigned to TYPE. */ | |
4571 | ||
4572 | int | |
4573 | rs6000_valid_type_attribute_p (type, attributes, identifier, args) | |
4574 | tree type; | |
4575 | tree attributes; | |
4576 | tree identifier; | |
4577 | tree args; | |
4578 | { | |
4579 | if (TREE_CODE (type) != FUNCTION_TYPE | |
4580 | && TREE_CODE (type) != FIELD_DECL | |
4581 | && TREE_CODE (type) != TYPE_DECL) | |
4582 | return 0; | |
4583 | ||
6a4cee5f MM |
4584 | /* Longcall attribute says that the function is not within 2**26 bytes |
4585 | of the current function, and to do an indirect call. */ | |
4586 | if (is_attribute_p ("longcall", identifier)) | |
4587 | return (args == NULL_TREE); | |
4588 | ||
7509c759 MM |
4589 | if (DEFAULT_ABI == ABI_NT) |
4590 | { | |
4591 | /* Stdcall attribute says callee is responsible for popping arguments | |
4592 | if they are not variable. */ | |
4593 | if (is_attribute_p ("stdcall", identifier)) | |
4594 | return (args == NULL_TREE); | |
4595 | ||
4596 | /* Cdecl attribute says the callee is a normal C declaration */ | |
4597 | if (is_attribute_p ("cdecl", identifier)) | |
4598 | return (args == NULL_TREE); | |
4599 | ||
4600 | /* Dllimport attribute says says the caller is to call the function | |
4601 | indirectly through a __imp_<name> pointer. */ | |
4602 | if (is_attribute_p ("dllimport", identifier)) | |
4603 | return (args == NULL_TREE); | |
4604 | ||
4605 | /* Dllexport attribute says says the callee is to create a __imp_<name> | |
4606 | pointer. */ | |
4607 | if (is_attribute_p ("dllexport", identifier)) | |
4608 | return (args == NULL_TREE); | |
e56bb9ed MM |
4609 | |
4610 | /* Exception attribute allows the user to specify 1-2 strings or identifiers | |
4611 | that will fill in the 3rd and 4th fields of the structured exception | |
4612 | table. */ | |
4613 | if (is_attribute_p ("exception", identifier)) | |
4614 | { | |
4615 | int i; | |
4616 | ||
4617 | if (args == NULL_TREE) | |
4618 | return 0; | |
4619 | ||
4620 | for (i = 0; i < 2 && args != NULL_TREE; i++) | |
4621 | { | |
4622 | tree this_arg = TREE_VALUE (args); | |
4623 | args = TREE_PURPOSE (args); | |
4624 | ||
4625 | if (TREE_CODE (this_arg) != STRING_CST | |
4626 | && TREE_CODE (this_arg) != IDENTIFIER_NODE) | |
4627 | return 0; | |
4628 | } | |
4629 | ||
4630 | return (args == NULL_TREE); | |
4631 | } | |
7509c759 MM |
4632 | } |
4633 | ||
4634 | return 0; | |
4635 | } | |
4636 | ||
4637 | /* If defined, a C expression whose value is zero if the attributes on | |
4638 | TYPE1 and TYPE2 are incompatible, one if they are compatible, and | |
4639 | two if they are nearly compatible (which causes a warning to be | |
4640 | generated). */ | |
4641 | ||
4642 | int | |
4643 | rs6000_comp_type_attributes (type1, type2) | |
4644 | tree type1; | |
4645 | tree type2; | |
4646 | { | |
4647 | return 1; | |
4648 | } | |
4649 | ||
4650 | /* If defined, a C statement that assigns default attributes to newly | |
4651 | defined TYPE. */ | |
4652 | ||
4653 | void | |
4654 | rs6000_set_default_type_attributes (type) | |
4655 | tree type; | |
4656 | { | |
4657 | } | |
4658 | ||
4659 | /* Return a dll import reference corresponding to to a call's SYMBOL_REF */ | |
4660 | struct rtx_def * | |
4661 | rs6000_dll_import_ref (call_ref) | |
4662 | rtx call_ref; | |
4663 | { | |
4664 | char *call_name; | |
4665 | int len; | |
4666 | char *p; | |
4667 | rtx reg1, reg2; | |
4668 | tree node; | |
4669 | ||
4670 | if (GET_CODE (call_ref) != SYMBOL_REF) | |
4671 | abort (); | |
4672 | ||
4673 | call_name = XSTR (call_ref, 0); | |
4674 | len = sizeof ("__imp_") + strlen (call_name); | |
4675 | p = alloca (len); | |
4676 | reg2 = gen_reg_rtx (Pmode); | |
4677 | ||
4678 | strcpy (p, "__imp_"); | |
4679 | strcat (p, call_name); | |
4680 | node = get_identifier (p); | |
4681 | ||
4682 | reg1 = force_reg (Pmode, gen_rtx (SYMBOL_REF, VOIDmode, IDENTIFIER_POINTER (node))); | |
4683 | emit_move_insn (reg2, gen_rtx (MEM, Pmode, reg1)); | |
4684 | ||
4685 | return reg2; | |
4686 | } | |
4687 | ||
6a4cee5f MM |
4688 | /* Return a reference suitable for calling a function with the longcall attribute. */ |
4689 | struct rtx_def * | |
4690 | rs6000_longcall_ref (call_ref) | |
4691 | rtx call_ref; | |
4692 | { | |
4693 | char *call_name; | |
4694 | int len; | |
4695 | char *p; | |
4696 | rtx reg1, reg2; | |
4697 | tree node; | |
4698 | ||
4699 | if (GET_CODE (call_ref) != SYMBOL_REF) | |
4700 | return call_ref; | |
4701 | ||
4702 | /* System V adds '.' to the internal name, so skip them. */ | |
4703 | call_name = XSTR (call_ref, 0); | |
4704 | if (*call_name == '.') | |
4705 | { | |
4706 | while (*call_name == '.') | |
4707 | call_name++; | |
4708 | ||
4709 | node = get_identifier (call_name); | |
4710 | call_ref = gen_rtx (SYMBOL_REF, VOIDmode, IDENTIFIER_POINTER (node)); | |
4711 | } | |
4712 | ||
4713 | return force_reg (Pmode, call_ref); | |
4714 | } | |
4715 | ||
7509c759 MM |
4716 | \f |
4717 | /* A C statement or statements to switch to the appropriate section | |
4718 | for output of RTX in mode MODE. You can assume that RTX is some | |
4719 | kind of constant in RTL. The argument MODE is redundant except in | |
4720 | the case of a `const_int' rtx. Select the section by calling | |
4721 | `text_section' or one of the alternatives for other sections. | |
4722 | ||
4723 | Do not define this macro if you put all constants in the read-only | |
4724 | data section. */ | |
4725 | ||
4726 | #ifdef USING_SVR4_H | |
4727 | ||
4728 | void | |
4729 | rs6000_select_rtx_section (mode, x) | |
4730 | enum machine_mode mode; | |
4731 | rtx x; | |
4732 | { | |
4733 | if (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P (x)) | |
4734 | toc_section (); | |
7509c759 MM |
4735 | else |
4736 | const_section (); | |
4737 | } | |
4738 | ||
4739 | /* A C statement or statements to switch to the appropriate | |
4740 | section for output of DECL. DECL is either a `VAR_DECL' node | |
4741 | or a constant of some sort. RELOC indicates whether forming | |
4742 | the initial value of DECL requires link-time relocations. */ | |
4743 | ||
4744 | void | |
4745 | rs6000_select_section (decl, reloc) | |
4746 | tree decl; | |
4747 | int reloc; | |
4748 | { | |
4749 | int size = int_size_in_bytes (TREE_TYPE (decl)); | |
4750 | ||
4751 | if (TREE_CODE (decl) == STRING_CST) | |
4752 | { | |
88228c4b | 4753 | if (! flag_writable_strings) |
7509c759 | 4754 | const_section (); |
7509c759 MM |
4755 | else |
4756 | data_section (); | |
4757 | } | |
4758 | else if (TREE_CODE (decl) == VAR_DECL) | |
4759 | { | |
4760 | if ((flag_pic && reloc) | |
4761 | || !TREE_READONLY (decl) | |
4762 | || TREE_SIDE_EFFECTS (decl) | |
4763 | || !DECL_INITIAL (decl) | |
4764 | || (DECL_INITIAL (decl) != error_mark_node | |
4765 | && !TREE_CONSTANT (DECL_INITIAL (decl)))) | |
4766 | { | |
d9407988 | 4767 | if (rs6000_sdata != SDATA_NONE && (size > 0) && (size <= g_switch_value)) |
7509c759 MM |
4768 | sdata_section (); |
4769 | else | |
4770 | data_section (); | |
4771 | } | |
4772 | else | |
4773 | { | |
d9407988 | 4774 | if (rs6000_sdata != SDATA_NONE && (size > 0) && (size <= g_switch_value)) |
c81bebd7 | 4775 | { |
d9407988 | 4776 | if (rs6000_sdata == SDATA_EABI) |
c81bebd7 MM |
4777 | sdata2_section (); |
4778 | else | |
4779 | sdata_section (); /* System V doesn't have .sdata2/.sbss2 */ | |
4780 | } | |
7509c759 MM |
4781 | else |
4782 | const_section (); | |
4783 | } | |
4784 | } | |
4785 | else | |
4786 | const_section (); | |
4787 | } | |
d9407988 MM |
4788 | |
4789 | \f | |
4790 | ||
4791 | /* If we are referencing a function that is static or is known to be | |
4792 | in this file, make the SYMBOL_REF special. We can use this to indicate | |
4793 | that we can branch to this function without emitting a no-op after the | |
4794 | call. For real AIX and NT calling sequences, we also replace the | |
4795 | function name with the real name (1 or 2 leading .'s), rather than | |
4796 | the function descriptor name. This saves a lot of overriding code | |
4797 | to readd the prefixes. */ | |
4798 | ||
4799 | void | |
4800 | rs6000_encode_section_info (decl) | |
4801 | tree decl; | |
4802 | { | |
4803 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
4804 | { | |
4805 | rtx sym_ref = XEXP (DECL_RTL (decl), 0); | |
4806 | if (TREE_ASM_WRITTEN (decl) || ! TREE_PUBLIC (decl)) | |
4807 | SYMBOL_REF_FLAG (sym_ref) = 1; | |
4808 | ||
4809 | if (DEFAULT_ABI == ABI_AIX || DEFAULT_ABI == ABI_NT) | |
4810 | { | |
4811 | char *prefix = (DEFAULT_ABI == ABI_AIX) ? "." : ".."; | |
4812 | char *str = permalloc (strlen (prefix) + 1 | |
4813 | + strlen (XSTR (sym_ref, 0))); | |
4814 | strcpy (str, prefix); | |
4815 | strcat (str, XSTR (sym_ref, 0)); | |
4816 | XSTR (sym_ref, 0) = str; | |
4817 | } | |
4818 | } | |
4819 | else if (rs6000_sdata != SDATA_NONE | |
4820 | && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS) | |
4821 | && TREE_CODE (decl) == VAR_DECL) | |
4822 | { | |
4823 | int size = int_size_in_bytes (TREE_TYPE (decl)); | |
4824 | tree section_name = DECL_SECTION_NAME (decl); | |
4825 | char *name = (char *)0; | |
4826 | int len = 0; | |
4827 | ||
4828 | if (section_name) | |
4829 | { | |
4830 | if (TREE_CODE (section_name) == STRING_CST) | |
4831 | { | |
4832 | name = TREE_STRING_POINTER (section_name); | |
4833 | len = TREE_STRING_LENGTH (section_name); | |
4834 | } | |
4835 | else | |
4836 | abort (); | |
4837 | } | |
4838 | ||
4839 | if ((size > 0 && size <= g_switch_value) | |
4840 | || (name | |
4841 | && ((len == sizeof (".sdata")-1 && strcmp (name, ".sdata") == 0) | |
4842 | || (len == sizeof (".sdata2")-1 && strcmp (name, ".sdata2") == 0) | |
4843 | || (len == sizeof (".sbss")-1 && strcmp (name, ".sbss") == 0) | |
4844 | || (len == sizeof (".sbss2")-1 && strcmp (name, ".sbss2") == 0) | |
4845 | || (len == sizeof (".PPC.EMB.sdata0")-1 && strcmp (name, ".PPC.EMB.sdata0") == 0) | |
4846 | || (len == sizeof (".PPC.EMB.sbss0")-1 && strcmp (name, ".PPC.EMB.sbss0") == 0)))) | |
4847 | { | |
4848 | rtx sym_ref = XEXP (DECL_RTL (decl), 0); | |
4849 | char *str = permalloc (2 + strlen (XSTR (sym_ref, 0))); | |
4850 | strcpy (str, "@"); | |
4851 | strcat (str, XSTR (sym_ref, 0)); | |
4852 | XSTR (sym_ref, 0) = str; | |
4853 | } | |
4854 | } | |
4855 | } | |
4856 | ||
7509c759 | 4857 | #endif /* USING_SVR4_H */ |