include/asm.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26
  27 #ifndef _PPC_ASM_H_
  28 #define _PPC_ASM_H_
  29
  30 #ifdef  __ELF__
  31 #define __NO_UNDERSCORES__ 1
  32 #define __ASMNL__       ;
  33 #else
  34 #define __ASMNL__       @
  35 #endif
  36
  37 #ifdef ASSEMBLER
  38
  39 #ifdef __ELF__
  40 #define r0 0
  41 #define r1 1
  42 #define r2 2
  43 #define r3 3
  44 #define r4 4
  45 #define r5 5
  46 #define r6 6
  47 #define r7 7
  48 #define r8 8
  49 #define r9 9
  50 #define r10 10
  51 #define r11 11
  52 #define r12 12
  53 #define r13 13
  54 #define r14 14
  55 #define r15 15
  56 #define r16 16
  57 #define r17 17
  58 #define r18 18
  59 #define r19 19
  60 #define r20 20
  61 #define r21 21
  62 #define r22 22
  63 #define r23 23
  64 #define r24 24
  65 #define r25 25
  66 #define r26 26
  67 #define r27 27
  68 #define r28 28
  69 #define r29 29
  70 #define r30 30
  71 #define r31 31
  72
  73 #define f0 0
  74 #define f1 1
  75 #define f2 2
  76 #define f3 3
  77 #define f4 4
  78 #define f5 5
  79 #define f6 6
  80 #define f7 7
  81 #define f8 8
  82 #define f9 9
  83 #define f10 10
  84 #define f11 11
  85 #define f12 12
  86 #define f13 13
  87 #define f14 14
  88 #define f15 15
  89 #define f16 16
  90 #define f17 17
  91 #define f18 18
  92 #define f19 19
  93 #define f20 20
  94 #define f21 21
  95 #define f22 22
  96 #define f23 23
  97 #define f24 24
  98 #define f25 25
  99 #define f26 26
 100 #define f27 27
 101 #define f28 28
 102 #define f29 29
 103 #define f30 30
 104 #define f31 31
 105
 106 #define sr0 0
 107 #define sr1 1
 108 #define sr2 2
 109 #define sr3 3
 110 #define sr4 4
 111 #define sr5 5
 112 #define sr6 6
 113 #define sr7 7
 114 #define sr8 8
 115 #define sr9 9
 116 #define sr10 10
 117 #define sr11 11
 118 #define sr12 12
 119 #define sr13 13
 120 #define sr14 14
 121 #define sr15 15
 122 #define sr16 16
 123 #define sr17 17
 124 #define sr18 18
 125 #define sr19 19
 126 #define sr20 20
 127 #define sr21 21
 128 #define sr22 22
 129 #define sr23 23
 130 #define sr24 24
 131 #define sr25 25
 132 #define sr26 26
 133 #define sr27 27
 134 #define sr28 28
 135 #define sr29 29
 136 #define sr30 30
 137 #define sr31 31
 138 #endif
 139
 140 #define ARG0 r3
 141 #define ARG1 r4
 142 #define ARG2 r5
 143 #define ARG3 r6
 144 #define ARG4 r7
 145 #define ARG5 r8
 146 #define ARG6 r9
 147 #define ARG7 r10
 148
 149 #define tmp0    r0      /* Temporary GPR remapping (603e specific) */
 150 #define tmp1    r1
 151 #define tmp2    r2
 152 #define tmp3    r3
 153
 154 /* SPR registers */
 155
 156 #define dmiss   976             /* ea that missed */
 157 #define dcmp    977             /* compare value for the va that missed */
 158 #define hash1   978             /* pointer to first hash pteg */
 159 #define hash2   979             /* pointer to second hash pteg */
 160 #define imiss   980             /* ea that missed */
 161 #define icmp    981             /* compare value for the va that missed */
 162 #define rpa     982             /* required physical address register */
 163
 164 #define iabr    1010            /* instruction address breakpoint register */
 165 #define pir     1023            /* Processor ID Register */
 166
 167 /* MQ register on the 601 */
 168 #define mq      0               /* spr number for mq register on 601 */
 169
 170 #define IBAT0U  528
 171 #define IBAT0L  529
 172 #define IBAT1U  530
 173 #define IBAT1L  531
 174 #define IBAT2U  532
 175 #define IBAT2L  533
 176 #define IBAT3U  534
 177 #define IBAT3L  535
 178 #define ibat0u  528
 179 #define ibat0l  529
 180 #define ibat1u  530
 181 #define ibat1l  531
 182 #define ibat2u  532
 183 #define ibat2l  533
 184 #define ibat3u  534
 185 #define ibat3l  535
 186
 187 #define DBAT0U  536
 188 #define DBAT0L  537
 189 #define DBAT1U  538
 190 #define DBAT1L  539
 191 #define DBAT2U  540
 192 #define DBAT2L  541
 193 #define DBAT3U  542
 194 #define DBAT3L  543
 195 #define dbat0u  536
 196 #define dbat0l  537
 197 #define dbat1u  538
 198 #define dbat1l  539
 199 #define dbat2u  540
 200 #define dbat2l  541
 201 #define dbat3u  542
 202 #define dbat3l  543
 203
 204 #define HID0    1008
 205 #define hid0    1008
 206 #define HID1    1009
 207 #define hid1    1009
 208 #define SDR1    25
 209 #define sprg0   272
 210 #define sprg1   273
 211 #define sprg2   274
 212 #define sprg3   275
 213 #define ppcDAR  19
 214 #define ppcdar  19
 215 #define srr0    26
 216 #define srr1    27
 217
 218 #define CR0 0
 219 #define CR1 1
 220 #define CR2 2
 221 #define CR3 3
 222 #define CR4 4
 223 #define CR5 5
 224 #define CR6 6
 225 #define CR7 7
 226
 227 #ifdef  __ELF__
 228 #define cr0 0
 229 #define cr1 1
 230 #define cr2 2
 231 #define cr3 3
 232 #define cr4 4
 233 #define cr5 5
 234 #define cr6 6
 235 #define cr7 7
 236 #endif
 237
 238 #define cr0_lt  0
 239 #define cr0_gt  1
 240 #define cr0_eq  2
 241 #define cr0_so  3
 242 #define cr0_un  3
 243
 244 /*
 245  * Macros to access high and low word values of an address
 246  */
 247
 248 #ifndef __ELF__
 249 #define HIGH_CADDR(x)   ha16(x)
 250 #define HIGH_ADDR(x)    hi16(x)
 251 #define LOW_ADDR(x)     lo16(x)
 252 #else
 253 #define HIGH_CADDR(x)   x@ha
 254 #define HIGH_ADDR(x)    x@h
 255 #define LOW_ADDR(x)     x@l
 256 #endif /* __ELF__ */
 257
 258 #endif  /* ASSEMBLER */
 259
 260 /* Tags are placed before Immediately Following Code (IFC) for the debugger
 261  * to be able to deduce where to find various registers when backtracing
 262  *
 263  * We only define the values as we use them, see SVR4 ABI PowerPc Supplement
 264  * for more details (defined in ELF spec).
 265  */
 266
 267 #define TAG_NO_FRAME_USED 0x00000000
 268
 269 /* (should use genassym to get these offsets) */
 270
 271 #define FM_BACKPTR 0
 272 /* TODO NMGS FM_SIZE 8 is ok according to EABI specs, but gcc uses 16 */
 273 #ifdef __ELF__
 274 #define FM_LR_SAVE 4  /* gcc 2.7.1 is now following eabi spec correctly */
 275 #define FM_SIZE    16   /* minimum frame contents, backptr and LR save */
 276 #define FM_ARG0    8
 277 #else
 278 #define FM_CR_SAVE 4
 279 #define FM_LR_SAVE 8 /* Rhapsody iS NOT following the ABI at the moment.. */
 280 #define FM_SIZE    72   /* minimum frame contents, backptr and LR save */
 281 #define FM_ARG0    56
 282 #endif
 283
 284 #define FM_ELF_ARG0             8
 285 #define FM_MACHO_ARG0           56
 286 #define MACHO_SYSCALL_BEGIN     0x2000
 287 #define PK_SYSCALL_BEGIN        0x7000
 288
 289
 290 /* redzone is the area under the stack pointer which must be preserved
 291  * when taking a trap, interrupt etc. This is no longer needed as gcc
 292  * (2.7.2 and above) now follows ELF spec correctly and never loads/stores
 293  * below the frame pointer
 294  */
 295 #ifdef  __ELF__
 296 #define FM_REDZONE 0                            /* was ((32-14+1)*4) */
 297 #else
 298 #define FM_REDZONE 224                          /* is ((32-14+1)*4) */
 299 #endif
 300
 301 #define COPYIN_ARG0_OFFSET FM_ARG0
 302
 303 #ifdef  MACH_KERNEL_BUILD
 304 #include <mach_kdb.h>
 305 #else   /* MACH_KERNEL */
 306 #define MACH_KDB 0
 307 #endif  /* MACH_KERNEL */
 308
 309 #define BREAKPOINT_TRAP twge    r2,r2
 310
 311 /* There is another definition of ALIGN for .c sources */
 312 #ifndef __LANGUAGE_ASSEMBLY
 313 #define ALIGN 2
 314 #endif /* __LANGUAGE_ASSEMBLY */
 315
 316 #ifndef FALIGN
 317 #define FALIGN 2 /* Align functions on words for now. Cachelines is better */
 318 #endif
 319
 320 #define LB(x,n) n
 321 #if     __STDC__
 322 #ifndef __NO_UNDERSCORES__
 323 #define LCL(x)  L ## x
 324 #define EXT(x) _ ## x
 325 #define LEXT(x) _ ## x ## :
 326 #else
 327 #define LCL(x)  .L ## x
 328 #define EXT(x) x
 329 #define LEXT(x) x ## :
 330 #endif
 331 #define LBc(x,n) n ## :
 332 #define LBb(x,n) n ## b
 333 #define LBf(x,n) n ## f
 334 #else /* __STDC__ */
 335 #ifndef __NO_UNDERSCORES__
 336 #define LCL(x) L/**/x
 337 #define EXT(x) _/**/x
 338 #define LEXT(x) _/**/x/**/:
 339 #else /* __NO_UNDERSCORES__ */
 340 #define LCL(x)  .L/**/x
 341 #define EXT(x) x
 342 #define LEXT(x) x/**/:
 343 #endif /* __NO_UNDERSCORES__ */
 344 #define LBc(x,n) n/**/:
 345 #define LBb(x,n) n/**/b
 346 #define LBf(x,n) n/**/f
 347 #endif /* __STDC__ */
 348
 349 #define String  .asciz
 350 #define Value   .word
 351 #define Times(a,b) (a*b)
 352 #define Divide(a,b) (a/b)
 353
 354 #define data16  .byte 0x66
 355 #define addr16  .byte 0x67
 356
 357 #if !GPROF
 358 #define MCOUNT
 359
 360 #elif defined(__SHARED__)
 361 #define MCOUNT          ; .data;\
 362                         .align ALIGN;\
 363                         LBc(x, 8) .long 0;\
 364                         .text;\
 365                         Gpush;\
 366                         Gload;\
 367                         leal Gotoff(LBb(x,8)),%edx;\
 368                         Egaddr(%eax,_mcount_ptr);\
 369                         Gpop;\
 370                         call *(%eax);
 371
 372 #else   /* !GPROF, !__SHARED__ */
 373 #define MCOUNT          ; .data;\
 374                         .align ALIGN;\
 375                         LBc(x, 8) .long 0;\
 376                         .text;\
 377                         movl $LBb(x,8),%edx;\
 378                         call *EXT(_mcount_ptr);
 379
 380 #endif /* GPROF */
 381
 382 #ifdef __ELF__
 383 #define ELF_FUNC(x)     .type x,@function
 384 #define ELF_DATA(x)     .type x,@object
 385 #define ELF_SIZE(x,s)   .size x,s
 386 #else
 387 #define ELF_FUNC(x)
 388 #define ELF_DATA(x)
 389 #define ELF_SIZE(x,s)
 390 #endif
 391
 392 #ifdef __ELF__
 393 #define Entry(x,tag)    .globl EXT(x); ELF_FUNC(EXT(x)); .long tag;.align FALIGN; LEXT(x)
 394 #define ENTRY(x,tag)    Entry(x,tag) MCOUNT
 395 #define ENTRY2(x,y,tag) .globl EXT(x); .globl EXT(y); \
 396                         ELF_FUNC(EXT(x)); ELF_FUNC(EXT(y)); \
 397                         .align FALIGN; LEXT(x); LEXT(y) \
 398                         MCOUNT
 399 #if __STDC__
 400 #define ASENTRY(x)      .globl x; .align FALIGN; x ## : ELF_FUNC(x) MCOUNT
 401 #else
 402 #define ASENTRY(x)      .globl x; .align FALIGN; x: ELF_FUNC(x) MCOUNT
 403 #endif /* __STDC__ */
 404 #define DATA(x)         .globl EXT(x); ELF_DATA(EXT(x)); .align ALIGN; LEXT(x)
 405
 406 #else   /* __ELF__ */
 407
 408 #define Entry(x,tag)    .text@.align FALIGN@ .globl EXT(x)@ LEXT(x)
 409 #define ENTRY(x,tag)    Entry(x,tag)@MCOUNT
 410 #define ENTRY2(x,y,tag) .text@ .align FALIGN@ .globl EXT(x)@ .globl EXT(y)@ \
 411                         LEXT(x)@ LEXT(y) @\
 412                         MCOUNT
 413 #if __STDC__
 414 #define ASENTRY(x)      .globl x @ .align FALIGN; x ## @ MCOUNT
 415 #else
 416 #define ASENTRY(x)      .globl x @ .align FALIGN; x @ MCOUNT
 417 #endif /* __STDC__ */
 418 #define DATA(x)         .globl EXT(x) @ .align ALIGN @ LEXT(x)
 419 #endif
 420
 421
 422
 423 #define End(x)          ELF_SIZE(x,.-x)
 424 #define END(x)          End(EXT(x))
 425 #define ENDDATA(x)      END(x)
 426 #define Enddata(x)      End(x)
 427
 428 /* These defines are here for .c files that wish to reference global symbols
 429  * within __asm__ statements.
 430  */
 431 #ifndef __NO_UNDERSCORES__
 432 #define CC_SYM_PREFIX "_"
 433 #else
 434 #define CC_SYM_PREFIX ""
 435 #endif /* __NO_UNDERSCORES__ */
 436
 437 #endif /* _PPC_ASM_H_ */