ltt-usertrace/ltt/ppc_asm-ppc.h

   1 /*
   2  * include/asm-ppc/ppc_asm.h
   3  *
   4  * Definitions used by various bits of low-level assembly code on PowerPC.
   5  *
   6  * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
   7  *
   8  *  This program is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU General Public License
  10  *  as published by the Free Software Foundation; either version
  11  *  2 of the License, or (at your option) any later version.
  12  */
  13
  14 #include <linux/config.h>
  15
  16 /*
  17  * Macros for storing registers into and loading registers from
  18  * exception frames.
  19  */
  20 #define SAVE_GPR(n, base)       stw     n,GPR0+4*(n)(base)
  21 #define SAVE_2GPRS(n, base)     SAVE_GPR(n, base); SAVE_GPR(n+1, base)
  22 #define SAVE_4GPRS(n, base)     SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
  23 #define SAVE_8GPRS(n, base)     SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
  24 #define SAVE_10GPRS(n, base)    SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
  25 #define REST_GPR(n, base)       lwz     n,GPR0+4*(n)(base)
  26 #define REST_2GPRS(n, base)     REST_GPR(n, base); REST_GPR(n+1, base)
  27 #define REST_4GPRS(n, base)     REST_2GPRS(n, base); REST_2GPRS(n+2, base)
  28 #define REST_8GPRS(n, base)     REST_4GPRS(n, base); REST_4GPRS(n+4, base)
  29 #define REST_10GPRS(n, base)    REST_8GPRS(n, base); REST_2GPRS(n+8, base)
  30
  31 #define SAVE_NVGPRS(base)       SAVE_GPR(13, base); SAVE_8GPRS(14, base); \
  32                                 SAVE_10GPRS(22, base)
  33 #define REST_NVGPRS(base)       REST_GPR(13, base); REST_8GPRS(14, base); \
  34                                 REST_10GPRS(22, base)
  35
  36 #define SAVE_FPR(n, base)       stfd    n,THREAD_FPR0+8*(n)(base)
  37 #define SAVE_2FPRS(n, base)     SAVE_FPR(n, base); SAVE_FPR(n+1, base)
  38 #define SAVE_4FPRS(n, base)     SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
  39 #define SAVE_8FPRS(n, base)     SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
  40 #define SAVE_16FPRS(n, base)    SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
  41 #define SAVE_32FPRS(n, base)    SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
  42 #define REST_FPR(n, base)       lfd     n,THREAD_FPR0+8*(n)(base)
  43 #define REST_2FPRS(n, base)     REST_FPR(n, base); REST_FPR(n+1, base)
  44 #define REST_4FPRS(n, base)     REST_2FPRS(n, base); REST_2FPRS(n+2, base)
  45 #define REST_8FPRS(n, base)     REST_4FPRS(n, base); REST_4FPRS(n+4, base)
  46 #define REST_16FPRS(n, base)    REST_8FPRS(n, base); REST_8FPRS(n+8, base)
  47 #define REST_32FPRS(n, base)    REST_16FPRS(n, base); REST_16FPRS(n+16, base)
  48
  49 #define SAVE_VR(n,b,base)       li b,THREAD_VR0+(16*(n));  stvx n,b,base
  50 #define SAVE_2VR(n,b,base)      SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
  51 #define SAVE_4VR(n,b,base)      SAVE_2VR(n,b,base); SAVE_2VR(n+2,b,base)
  52 #define SAVE_8VR(n,b,base)      SAVE_4VR(n,b,base); SAVE_4VR(n+4,b,base)
  53 #define SAVE_16VR(n,b,base)     SAVE_8VR(n,b,base); SAVE_8VR(n+8,b,base)
  54 #define SAVE_32VR(n,b,base)     SAVE_16VR(n,b,base); SAVE_16VR(n+16,b,base)
  55 #define REST_VR(n,b,base)       li b,THREAD_VR0+(16*(n)); lvx n,b,base
  56 #define REST_2VR(n,b,base)      REST_VR(n,b,base); REST_VR(n+1,b,base)
  57 #define REST_4VR(n,b,base)      REST_2VR(n,b,base); REST_2VR(n+2,b,base)
  58 #define REST_8VR(n,b,base)      REST_4VR(n,b,base); REST_4VR(n+4,b,base)
  59 #define REST_16VR(n,b,base)     REST_8VR(n,b,base); REST_8VR(n+8,b,base)
  60 #define REST_32VR(n,b,base)     REST_16VR(n,b,base); REST_16VR(n+16,b,base)
  61
  62 #define SAVE_EVR(n,s,base)      evmergehi s,s,n; stw s,THREAD_EVR0+4*(n)(base)
  63 #define SAVE_2EVR(n,s,base)     SAVE_EVR(n,s,base); SAVE_EVR(n+1,s,base)
  64 #define SAVE_4EVR(n,s,base)     SAVE_2EVR(n,s,base); SAVE_2EVR(n+2,s,base)
  65 #define SAVE_8EVR(n,s,base)     SAVE_4EVR(n,s,base); SAVE_4EVR(n+4,s,base)
  66 #define SAVE_16EVR(n,s,base)    SAVE_8EVR(n,s,base); SAVE_8EVR(n+8,s,base)
  67 #define SAVE_32EVR(n,s,base)    SAVE_16EVR(n,s,base); SAVE_16EVR(n+16,s,base)
  68
  69 #define REST_EVR(n,s,base)      lwz s,THREAD_EVR0+4*(n)(base); evmergelo n,s,n
  70 #define REST_2EVR(n,s,base)     REST_EVR(n,s,base); REST_EVR(n+1,s,base)
  71 #define REST_4EVR(n,s,base)     REST_2EVR(n,s,base); REST_2EVR(n+2,s,base)
  72 #define REST_8EVR(n,s,base)     REST_4EVR(n,s,base); REST_4EVR(n+4,s,base)
  73 #define REST_16EVR(n,s,base)    REST_8EVR(n,s,base); REST_8EVR(n+8,s,base)
  74 #define REST_32EVR(n,s,base)    REST_16EVR(n,s,base); REST_16EVR(n+16,s,base)
  75
  76 #ifdef CONFIG_PPC601_SYNC_FIX
  77 #define SYNC                            \
  78 BEGIN_FTR_SECTION                       \
  79         sync;                           \
  80         isync;                          \
  81 END_FTR_SECTION_IFSET(CPU_FTR_601)
  82 #define SYNC_601                        \
  83 BEGIN_FTR_SECTION                       \
  84         sync;                           \
  85 END_FTR_SECTION_IFSET(CPU_FTR_601)
  86 #define ISYNC_601                       \
  87 BEGIN_FTR_SECTION                       \
  88         isync;                          \
  89 END_FTR_SECTION_IFSET(CPU_FTR_601)
  90 #else
  91 #define SYNC
  92 #define SYNC_601
  93 #define ISYNC_601
  94 #endif
  95
  96 #ifndef CONFIG_SMP
  97 #define TLBSYNC
  98 #else /* CONFIG_SMP */
  99 /* tlbsync is not implemented on 601 */
 100 #define TLBSYNC                         \
 101 BEGIN_FTR_SECTION                       \
 102         tlbsync;                        \
 103         sync;                           \
 104 END_FTR_SECTION_IFCLR(CPU_FTR_601)
 105 #endif
 106
 107 /*
 108  * This instruction is not implemented on the PPC 603 or 601; however, on
 109  * the 403GCX and 405GP tlbia IS defined and tlbie is not.
 110  * All of these instructions exist in the 8xx, they have magical powers,
 111  * and they must be used.
 112  */
 113
 114 #if !defined(CONFIG_4xx) && !defined(CONFIG_8xx)
 115 #define tlbia                                   \
 116         li      r4,1024;                        \
 117         mtctr   r4;                             \
 118         lis     r4,KERNELBASE@h;                \
 119 0:      tlbie   r4;                             \
 120         addi    r4,r4,0x1000;                   \
 121         bdnz    0b
 122 #endif
 123
 124 #ifdef CONFIG_BOOKE
 125 #define tophys(rd,rs)                           \
 126         addis   rd,rs,0
 127
 128 #define tovirt(rd,rs)                           \
 129         addis   rd,rs,0
 130
 131 #else  /* CONFIG_BOOKE */
 132 /*
 133  * On APUS (Amiga PowerPC cpu upgrade board), we don't know the
 134  * physical base address of RAM at compile time.
 135  */
 136 #define tophys(rd,rs)                           \
 137 0:      addis   rd,rs,-KERNELBASE@h;            \
 138         .section ".vtop_fixup","aw";            \
 139         .align  1;                              \
 140         .long   0b;                             \
 141         .previous
 142
 143 #define tovirt(rd,rs)                           \
 144 0:      addis   rd,rs,KERNELBASE@h;             \
 145         .section ".ptov_fixup","aw";            \
 146         .align  1;                              \
 147         .long   0b;                             \
 148         .previous
 149 #endif  /* CONFIG_BOOKE */
 150
 151 /*
 152  * On 64-bit cpus, we use the rfid instruction instead of rfi, but
 153  * we then have to make sure we preserve the top 32 bits except for
 154  * the 64-bit mode bit, which we clear.
 155  */
 156 #ifdef CONFIG_PPC64BRIDGE
 157 #define FIX_SRR1(ra, rb)        \
 158         mr      rb,ra;          \
 159         mfmsr   ra;             \
 160         clrldi  ra,ra,1;                /* turn off 64-bit mode */ \
 161         rldimi  ra,rb,0,32
 162 #define RFI             .long   0x4c000024      /* rfid instruction */
 163 #define MTMSRD(r)       .long   (0x7c000164 + ((r) << 21))      /* mtmsrd */
 164 #define CLR_TOP32(r)    rlwinm  (r),(r),0,0,31  /* clear top 32 bits */
 165
 166 #else
 167 #define FIX_SRR1(ra, rb)
 168 #ifndef CONFIG_40x
 169 #define RFI             rfi
 170 #else
 171 #define RFI             rfi; b .        /* Prevent prefetch past rfi */
 172 #endif
 173 #define MTMSRD(r)       mtmsr   r
 174 #define CLR_TOP32(r)
 175 #endif /* CONFIG_PPC64BRIDGE */
 176
 177 #define RFCI            .long 0x4c000066        /* rfci instruction */
 178 #define RFDI            .long 0x4c00004e        /* rfdi instruction */
 179 #define RFMCI           .long 0x4c00004c        /* rfmci instruction */
 180
 181 #ifdef CONFIG_IBM405_ERR77
 182 #define PPC405_ERR77(ra,rb)     dcbt    ra, rb;
 183 #define PPC405_ERR77_SYNC       sync;
 184 #else
 185 #define PPC405_ERR77(ra,rb)
 186 #define PPC405_ERR77_SYNC
 187 #endif
 188
 189 /* The boring bits... */
 190
 191 /* Condition Register Bit Fields */
 192
 193 #define cr0     0
 194 #define cr1     1
 195 #define cr2     2
 196 #define cr3     3
 197 #define cr4     4
 198 #define cr5     5
 199 #define cr6     6
 200 #define cr7     7
 201
 202
 203 /* General Purpose Registers (GPRs) */
 204
 205 #define r0      0
 206 #define r1      1
 207 #define r2      2
 208 #define r3      3
 209 #define r4      4
 210 #define r5      5
 211 #define r6      6
 212 #define r7      7
 213 #define r8      8
 214 #define r9      9
 215 #define r10     10
 216 #define r11     11
 217 #define r12     12
 218 #define r13     13
 219 #define r14     14
 220 #define r15     15
 221 #define r16     16
 222 #define r17     17
 223 #define r18     18
 224 #define r19     19
 225 #define r20     20
 226 #define r21     21
 227 #define r22     22
 228 #define r23     23
 229 #define r24     24
 230 #define r25     25
 231 #define r26     26
 232 #define r27     27
 233 #define r28     28
 234 #define r29     29
 235 #define r30     30
 236 #define r31     31
 237
 238
 239 /* Floating Point Registers (FPRs) */
 240
 241 #define fr0     0
 242 #define fr1     1
 243 #define fr2     2
 244 #define fr3     3
 245 #define fr4     4
 246 #define fr5     5
 247 #define fr6     6
 248 #define fr7     7
 249 #define fr8     8
 250 #define fr9     9
 251 #define fr10    10
 252 #define fr11    11
 253 #define fr12    12
 254 #define fr13    13
 255 #define fr14    14
 256 #define fr15    15
 257 #define fr16    16
 258 #define fr17    17
 259 #define fr18    18
 260 #define fr19    19
 261 #define fr20    20
 262 #define fr21    21
 263 #define fr22    22
 264 #define fr23    23
 265 #define fr24    24
 266 #define fr25    25
 267 #define fr26    26
 268 #define fr27    27
 269 #define fr28    28
 270 #define fr29    29
 271 #define fr30    30
 272 #define fr31    31
 273
 274 #define vr0     0
 275 #define vr1     1
 276 #define vr2     2
 277 #define vr3     3
 278 #define vr4     4
 279 #define vr5     5
 280 #define vr6     6
 281 #define vr7     7
 282 #define vr8     8
 283 #define vr9     9
 284 #define vr10    10
 285 #define vr11    11
 286 #define vr12    12
 287 #define vr13    13
 288 #define vr14    14
 289 #define vr15    15
 290 #define vr16    16
 291 #define vr17    17
 292 #define vr18    18
 293 #define vr19    19
 294 #define vr20    20
 295 #define vr21    21
 296 #define vr22    22
 297 #define vr23    23
 298 #define vr24    24
 299 #define vr25    25
 300 #define vr26    26
 301 #define vr27    27
 302 #define vr28    28
 303 #define vr29    29
 304 #define vr30    30
 305 #define vr31    31
 306
 307 #define evr0    0
 308 #define evr1    1
 309 #define evr2    2
 310 #define evr3    3
 311 #define evr4    4
 312 #define evr5    5
 313 #define evr6    6
 314 #define evr7    7
 315 #define evr8    8
 316 #define evr9    9
 317 #define evr10   10
 318 #define evr11   11
 319 #define evr12   12
 320 #define evr13   13
 321 #define evr14   14
 322 #define evr15   15
 323 #define evr16   16
 324 #define evr17   17
 325 #define evr18   18
 326 #define evr19   19
 327 #define evr20   20
 328 #define evr21   21
 329 #define evr22   22
 330 #define evr23   23
 331 #define evr24   24
 332 #define evr25   25
 333 #define evr26   26
 334 #define evr27   27
 335 #define evr28   28
 336 #define evr29   29
 337 #define evr30   30
 338 #define evr31   31
 339
 340 /* some stab codes */
 341 #define N_FUN   36
 342 #define N_RSYM  64
 343 #define N_SLINE 68
 344 #define N_SO    100