include/asm.h

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