gcc/config/rs6000/ppc-asm.h

   1 /* PowerPC asm definitions for GNU C.
   2
   3 Copyright (C) 2002-2014 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 /* Under winnt, 1) gas supports the following as names and 2) in particular
  27    defining "toc" breaks the FUNC_START macro as ".toc" becomes ".2" */
  28
  29 #define r0      0
  30 #define sp      1
  31 #define toc     2
  32 #define r3      3
  33 #define r4      4
  34 #define r5      5
  35 #define r6      6
  36 #define r7      7
  37 #define r8      8
  38 #define r9      9
  39 #define r10     10
  40 #define r11     11
  41 #define r12     12
  42 #define r13     13
  43 #define r14     14
  44 #define r15     15
  45 #define r16     16
  46 #define r17     17
  47 #define r18     18
  48 #define r19     19
  49 #define r20     20
  50 #define r21     21
  51 #define r22     22
  52 #define r23     23
  53 #define r24     24
  54 #define r25     25
  55 #define r26     26
  56 #define r27     27
  57 #define r28     28
  58 #define r29     29
  59 #define r30     30
  60 #define r31     31
  61
  62 #define cr0     0
  63 #define cr1     1
  64 #define cr2     2
  65 #define cr3     3
  66 #define cr4     4
  67 #define cr5     5
  68 #define cr6     6
  69 #define cr7     7
  70
  71 #define f0      0
  72 #define f1      1
  73 #define f2      2
  74 #define f3      3
  75 #define f4      4
  76 #define f5      5
  77 #define f6      6
  78 #define f7      7
  79 #define f8      8
  80 #define f9      9
  81 #define f10     10
  82 #define f11     11
  83 #define f12     12
  84 #define f13     13
  85 #define f14     14
  86 #define f15     15
  87 #define f16     16
  88 #define f17     17
  89 #define f18     18
  90 #define f19     19
  91 #define f20     20
  92 #define f21     21
  93 #define f22     22
  94 #define f23     23
  95 #define f24     24
  96 #define f25     25
  97 #define f26     26
  98 #define f27     27
  99 #define f28     28
 100 #define f29     29
 101 #define f30     30
 102 #define f31     31
 103
 104 #ifdef __VSX__
 105 #define f32     32
 106 #define f33     33
 107 #define f34     34
 108 #define f35     35
 109 #define f36     36
 110 #define f37     37
 111 #define f38     38
 112 #define f39     39
 113 #define f40     40
 114 #define f41     41
 115 #define f42     42
 116 #define f43     43
 117 #define f44     44
 118 #define f45     45
 119 #define f46     46
 120 #define f47     47
 121 #define f48     48
 122 #define f49     49
 123 #define f50     30
 124 #define f51     51
 125 #define f52     52
 126 #define f53     53
 127 #define f54     54
 128 #define f55     55
 129 #define f56     56
 130 #define f57     57
 131 #define f58     58
 132 #define f59     59
 133 #define f60     60
 134 #define f61     61
 135 #define f62     62
 136 #define f63     63
 137 #endif
 138
 139 #ifdef __ALTIVEC__
 140 #define v0      0
 141 #define v1      1
 142 #define v2      2
 143 #define v3      3
 144 #define v4      4
 145 #define v5      5
 146 #define v6      6
 147 #define v7      7
 148 #define v8      8
 149 #define v9      9
 150 #define v10     10
 151 #define v11     11
 152 #define v12     12
 153 #define v13     13
 154 #define v14     14
 155 #define v15     15
 156 #define v16     16
 157 #define v17     17
 158 #define v18     18
 159 #define v19     19
 160 #define v20     20
 161 #define v21     21
 162 #define v22     22
 163 #define v23     23
 164 #define v24     24
 165 #define v25     25
 166 #define v26     26
 167 #define v27     27
 168 #define v28     28
 169 #define v29     29
 170 #define v30     30
 171 #define v31     31
 172 #endif
 173
 174 #ifdef __VSX__
 175 #define vs0     0
 176 #define vs1     1
 177 #define vs2     2
 178 #define vs3     3
 179 #define vs4     4
 180 #define vs5     5
 181 #define vs6     6
 182 #define vs7     7
 183 #define vs8     8
 184 #define vs9     9
 185 #define vs10    10
 186 #define vs11    11
 187 #define vs12    12
 188 #define vs13    13
 189 #define vs14    14
 190 #define vs15    15
 191 #define vs16    16
 192 #define vs17    17
 193 #define vs18    18
 194 #define vs19    19
 195 #define vs20    20
 196 #define vs21    21
 197 #define vs22    22
 198 #define vs23    23
 199 #define vs24    24
 200 #define vs25    25
 201 #define vs26    26
 202 #define vs27    27
 203 #define vs28    28
 204 #define vs29    29
 205 #define vs30    30
 206 #define vs31    31
 207 #define vs32    32
 208 #define vs33    33
 209 #define vs34    34
 210 #define vs35    35
 211 #define vs36    36
 212 #define vs37    37
 213 #define vs38    38
 214 #define vs39    39
 215 #define vs40    40
 216 #define vs41    41
 217 #define vs42    42
 218 #define vs43    43
 219 #define vs44    44
 220 #define vs45    45
 221 #define vs46    46
 222 #define vs47    47
 223 #define vs48    48
 224 #define vs49    49
 225 #define vs50    30
 226 #define vs51    51
 227 #define vs52    52
 228 #define vs53    53
 229 #define vs54    54
 230 #define vs55    55
 231 #define vs56    56
 232 #define vs57    57
 233 #define vs58    58
 234 #define vs59    59
 235 #define vs60    60
 236 #define vs61    61
 237 #define vs62    62
 238 #define vs63    63
 239 #endif
 240
 241 /*
 242  * Macros to glue together two tokens.
 243  */
 244
 245 #ifdef __STDC__
 246 #define XGLUE(a,b) a##b
 247 #else
 248 #define XGLUE(a,b) a/**/b
 249 #endif
 250
 251 #define GLUE(a,b) XGLUE(a,b)
 252
 253 /*
 254  * Macros to begin and end a function written in assembler.  If -mcall-aixdesc
 255  * or -mcall-nt, create a function descriptor with the given name, and create
 256  * the real function with one or two leading periods respectively.
 257  */
 258
 259 #if defined(__powerpc64__) && _CALL_ELF == 2
 260
 261 /* Defining "toc" above breaks @toc in assembler code.  */
 262 #undef toc
 263
 264 #define FUNC_NAME(name) GLUE(__USER_LABEL_PREFIX__,name)
 265 #define JUMP_TARGET(name) FUNC_NAME(name)
 266 #define FUNC_START(name) \
 267         .type FUNC_NAME(name),@function; \
 268         .globl FUNC_NAME(name); \
 269 FUNC_NAME(name): \
 270 0:      addis 2,12,(.TOC.-0b)@ha; \
 271         addi 2,2,(.TOC.-0b)@l; \
 272         .localentry FUNC_NAME(name),.-FUNC_NAME(name)
 273
 274 #define HIDDEN_FUNC(name) \
 275   FUNC_START(name) \
 276   .hidden FUNC_NAME(name);
 277
 278 #define FUNC_END(name) \
 279         .size FUNC_NAME(name),.-FUNC_NAME(name)
 280
 281 #elif defined (__powerpc64__)
 282
 283 #define FUNC_NAME(name) GLUE(.,name)
 284 #define JUMP_TARGET(name) FUNC_NAME(name)
 285 #define FUNC_START(name) \
 286         .section ".opd","aw"; \
 287 name: \
 288         .quad GLUE(.,name); \
 289         .quad .TOC.@tocbase; \
 290         .quad 0; \
 291         .previous; \
 292         .type GLUE(.,name),@function; \
 293         .globl name; \
 294         .globl GLUE(.,name); \
 295 GLUE(.,name):
 296
 297 #define HIDDEN_FUNC(name) \
 298   FUNC_START(name) \
 299   .hidden name; \
 300   .hidden GLUE(.,name);
 301
 302 #define FUNC_END(name) \
 303 GLUE(.L,name): \
 304         .size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
 305
 306 #elif defined(_CALL_AIXDESC)
 307
 308 #ifdef _RELOCATABLE
 309 #define DESC_SECTION ".got2"
 310 #else
 311 #define DESC_SECTION ".got1"
 312 #endif
 313
 314 #define FUNC_NAME(name) GLUE(.,name)
 315 #define JUMP_TARGET(name) FUNC_NAME(name)
 316 #define FUNC_START(name) \
 317         .section DESC_SECTION,"aw"; \
 318 name: \
 319         .long GLUE(.,name); \
 320         .long _GLOBAL_OFFSET_TABLE_; \
 321         .long 0; \
 322         .previous; \
 323         .type GLUE(.,name),@function; \
 324         .globl name; \
 325         .globl GLUE(.,name); \
 326 GLUE(.,name):
 327
 328 #define HIDDEN_FUNC(name) \
 329   FUNC_START(name) \
 330   .hidden name; \
 331   .hidden GLUE(.,name);
 332
 333 #define FUNC_END(name) \
 334 GLUE(.L,name): \
 335         .size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
 336
 337 #else
 338
 339 #define FUNC_NAME(name) GLUE(__USER_LABEL_PREFIX__,name)
 340 #if defined __PIC__ || defined __pic__
 341 #define JUMP_TARGET(name) FUNC_NAME(name@plt)
 342 #else
 343 #define JUMP_TARGET(name) FUNC_NAME(name)
 344 #endif
 345 #define FUNC_START(name) \
 346         .type FUNC_NAME(name),@function; \
 347         .globl FUNC_NAME(name); \
 348 FUNC_NAME(name):
 349
 350 #define HIDDEN_FUNC(name) \
 351   FUNC_START(name) \
 352   .hidden FUNC_NAME(name);
 353
 354 #define FUNC_END(name) \
 355 GLUE(.L,name): \
 356         .size FUNC_NAME(name),GLUE(.L,name)-FUNC_NAME(name)
 357 #endif
 358
 359 #ifdef IN_GCC
 360 /* For HAVE_GAS_CFI_DIRECTIVE.  */
 361 #include "auto-host.h"
 362
 363 #ifdef HAVE_GAS_CFI_DIRECTIVE
 364 # define CFI_STARTPROC                  .cfi_startproc
 365 # define CFI_ENDPROC                    .cfi_endproc
 366 # define CFI_OFFSET(reg, off)           .cfi_offset reg, off
 367 # define CFI_DEF_CFA_REGISTER(reg)      .cfi_def_cfa_register reg
 368 # define CFI_RESTORE(reg)               .cfi_restore reg
 369 #else
 370 # define CFI_STARTPROC
 371 # define CFI_ENDPROC
 372 # define CFI_OFFSET(reg, off)
 373 # define CFI_DEF_CFA_REGISTER(reg)
 374 # define CFI_RESTORE(reg)
 375 #endif
 376 #endif
 377
 378 #if defined __linux__ && !defined __powerpc64__
 379         .section .note.GNU-stack
 380         .previous
 381 #endif