coregrind/m_gdbserver/valgrind-low-ppc32.c

   1 /* Low level interface to valgrind, for the remote server for GDB integrated
   2    in valgrind.
   3    Copyright (C) 2011
   4    Free Software Foundation, Inc.
   5
   6    This file is part of VALGRIND.
   7    It has been inspired from a file from gdbserver in gdb 6.6.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22    Boston, MA 02110-1301, USA.  */
  23
  24 #include "server.h"
  25 #include "target.h"
  26 #include "regdef.h"
  27 #include "regcache.h"
  28
  29 #include "pub_core_machine.h"
  30 #include "pub_core_threadstate.h"
  31 #include "pub_core_transtab.h"
  32 #include "pub_core_gdbserver.h"
  33
  34 #include "valgrind_low.h"
  35
  36 #include "libvex_guest_ppc32.h"
  37
  38 /* this is only the basic set of registers.
  39    Need to look at what is the exact ppc32 model to support.
  40 */
  41 static struct reg regs[] = {
  42   { "r0", 0, 32 },
  43   { "r1", 32, 32 },
  44   { "r2", 64, 32 },
  45   { "r3", 96, 32 },
  46   { "r4", 128, 32 },
  47   { "r5", 160, 32 },
  48   { "r6", 192, 32 },
  49   { "r7", 224, 32 },
  50   { "r8", 256, 32 },
  51   { "r9", 288, 32 },
  52   { "r10", 320, 32 },
  53   { "r11", 352, 32 },
  54   { "r12", 384, 32 },
  55   { "r13", 416, 32 },
  56   { "r14", 448, 32 },
  57   { "r15", 480, 32 },
  58   { "r16", 512, 32 },
  59   { "r17", 544, 32 },
  60   { "r18", 576, 32 },
  61   { "r19", 608, 32 },
  62   { "r20", 640, 32 },
  63   { "r21", 672, 32 },
  64   { "r22", 704, 32 },
  65   { "r23", 736, 32 },
  66   { "r24", 768, 32 },
  67   { "r25", 800, 32 },
  68   { "r26", 832, 32 },
  69   { "r27", 864, 32 },
  70   { "r28", 896, 32 },
  71   { "r29", 928, 32 },
  72   { "r30", 960, 32 },
  73   { "r31", 992, 32 },
  74   { "f0", 1024, 64 },
  75   { "f1", 1088, 64 },
  76   { "f2", 1152, 64 },
  77   { "f3", 1216, 64 },
  78   { "f4", 1280, 64 },
  79   { "f5", 1344, 64 },
  80   { "f6", 1408, 64 },
  81   { "f7", 1472, 64 },
  82   { "f8", 1536, 64 },
  83   { "f9", 1600, 64 },
  84   { "f10", 1664, 64 },
  85   { "f11", 1728, 64 },
  86   { "f12", 1792, 64 },
  87   { "f13", 1856, 64 },
  88   { "f14", 1920, 64 },
  89   { "f15", 1984, 64 },
  90   { "f16", 2048, 64 },
  91   { "f17", 2112, 64 },
  92   { "f18", 2176, 64 },
  93   { "f19", 2240, 64 },
  94   { "f20", 2304, 64 },
  95   { "f21", 2368, 64 },
  96   { "f22", 2432, 64 },
  97   { "f23", 2496, 64 },
  98   { "f24", 2560, 64 },
  99   { "f25", 2624, 64 },
 100   { "f26", 2688, 64 },
 101   { "f27", 2752, 64 },
 102   { "f28", 2816, 64 },
 103   { "f29", 2880, 64 },
 104   { "f30", 2944, 64 },
 105   { "f31", 3008, 64 },
 106   { "pc", 3072, 32 },
 107   { "msr", 3104, 32 },
 108   { "cr", 3136, 32 },
 109   { "lr", 3168, 32 },
 110   { "ctr", 3200, 32 },
 111   { "xer", 3232, 32 },
 112   { "fpscr", 3264, 32 },
 113   { "orig_r3", 3296, 32 },
 114   { "trap", 3328, 32 },
 115   { "vr0", 3360, 128 },
 116   { "vr1", 3488, 128 },
 117   { "vr2", 3616, 128 },
 118   { "vr3", 3744, 128 },
 119   { "vr4", 3872, 128 },
 120   { "vr5", 4000, 128 },
 121   { "vr6", 4128, 128 },
 122   { "vr7", 4256, 128 },
 123   { "vr8", 4384, 128 },
 124   { "vr9", 4512, 128 },
 125   { "vr10", 4640, 128 },
 126   { "vr11", 4768, 128 },
 127   { "vr12", 4896, 128 },
 128   { "vr13", 5024, 128 },
 129   { "vr14", 5152, 128 },
 130   { "vr15", 5280, 128 },
 131   { "vr16", 5408, 128 },
 132   { "vr17", 5536, 128 },
 133   { "vr18", 5664, 128 },
 134   { "vr19", 5792, 128 },
 135   { "vr20", 5920, 128 },
 136   { "vr21", 6048, 128 },
 137   { "vr22", 6176, 128 },
 138   { "vr23", 6304, 128 },
 139   { "vr24", 6432, 128 },
 140   { "vr25", 6560, 128 },
 141   { "vr26", 6688, 128 },
 142   { "vr27", 6816, 128 },
 143   { "vr28", 6944, 128 },
 144   { "vr29", 7072, 128 },
 145   { "vr30", 7200, 128 },
 146   { "vr31", 7328, 128 },
 147   { "vscr", 7456, 32 },
 148   { "vrsave", 7488, 32 }
 149 };
 150 static const char *expedite_regs[] = { "r1", "pc", 0 };
 151 #define num_regs (sizeof (regs) / sizeof (regs[0]))
 152
 153 static
 154 CORE_ADDR get_pc (void)
 155 {
 156    unsigned long pc;
 157
 158    collect_register_by_name ("pc", &pc);
 159
 160    dlog(1, "stop pc is %p\n", (void *) pc);
 161    return pc;
 162 }
 163
 164 static
 165 void set_pc (CORE_ADDR newpc)
 166 {
 167    supply_register_by_name ("pc", &newpc);
 168 }
 169
 170 /* store registers in the guest state (gdbserver_to_valgrind)
 171    or fetch register from the guest state (valgrind_to_gdbserver). */
 172 static
 173 void transfer_register (ThreadId tid, int abs_regno, void * buf,
 174                         transfer_direction dir, int size, Bool *mod)
 175 {
 176    ThreadState* tst = VG_(get_ThreadState)(tid);
 177    int set = abs_regno / num_regs;
 178    int regno = abs_regno % num_regs;
 179    *mod = False;
 180
 181    VexGuestPPC32State* ppc32 = (VexGuestPPC32State*) get_arch (set, tst);
 182
 183    switch (regno) {
 184    // numbers here have to match the order of regs above
 185    // Attention: gdb order does not match valgrind order.
 186    case 0:  VG_(transfer) (&ppc32->guest_GPR0,  buf, dir, size, mod); break;
 187    case 1:  VG_(transfer) (&ppc32->guest_GPR1,  buf, dir, size, mod); break;
 188    case 2:  VG_(transfer) (&ppc32->guest_GPR2,  buf, dir, size, mod); break;
 189    case 3:  VG_(transfer) (&ppc32->guest_GPR3,  buf, dir, size, mod); break;
 190    case 4:  VG_(transfer) (&ppc32->guest_GPR4,  buf, dir, size, mod); break;
 191    case 5:  VG_(transfer) (&ppc32->guest_GPR5,  buf, dir, size, mod); break;
 192    case 6:  VG_(transfer) (&ppc32->guest_GPR6,  buf, dir, size, mod); break;
 193    case 7:  VG_(transfer) (&ppc32->guest_GPR7,  buf, dir, size, mod); break;
 194    case 8:  VG_(transfer) (&ppc32->guest_GPR8,  buf, dir, size, mod); break;
 195    case 9:  VG_(transfer) (&ppc32->guest_GPR9,  buf, dir, size, mod); break;
 196    case 10: VG_(transfer) (&ppc32->guest_GPR10, buf, dir, size, mod); break;
 197    case 11: VG_(transfer) (&ppc32->guest_GPR11, buf, dir, size, mod); break;
 198    case 12: VG_(transfer) (&ppc32->guest_GPR12, buf, dir, size, mod); break;
 199    case 13: VG_(transfer) (&ppc32->guest_GPR13, buf, dir, size, mod); break;
 200    case 14: VG_(transfer) (&ppc32->guest_GPR14, buf, dir, size, mod); break;
 201    case 15: VG_(transfer) (&ppc32->guest_GPR15, buf, dir, size, mod); break;
 202    case 16: VG_(transfer) (&ppc32->guest_GPR16, buf, dir, size, mod); break;
 203    case 17: VG_(transfer) (&ppc32->guest_GPR17, buf, dir, size, mod); break;
 204    case 18: VG_(transfer) (&ppc32->guest_GPR18, buf, dir, size, mod); break;
 205    case 19: VG_(transfer) (&ppc32->guest_GPR19, buf, dir, size, mod); break;
 206    case 20: VG_(transfer) (&ppc32->guest_GPR20, buf, dir, size, mod); break;
 207    case 21: VG_(transfer) (&ppc32->guest_GPR21, buf, dir, size, mod); break;
 208    case 22: VG_(transfer) (&ppc32->guest_GPR22, buf, dir, size, mod); break;
 209    case 23: VG_(transfer) (&ppc32->guest_GPR23, buf, dir, size, mod); break;
 210    case 24: VG_(transfer) (&ppc32->guest_GPR24, buf, dir, size, mod); break;
 211    case 25: VG_(transfer) (&ppc32->guest_GPR25, buf, dir, size, mod); break;
 212    case 26: VG_(transfer) (&ppc32->guest_GPR26, buf, dir, size, mod); break;
 213    case 27: VG_(transfer) (&ppc32->guest_GPR27, buf, dir, size, mod); break;
 214    case 28: VG_(transfer) (&ppc32->guest_GPR28, buf, dir, size, mod); break;
 215    case 29: VG_(transfer) (&ppc32->guest_GPR29, buf, dir, size, mod); break;
 216    case 30: VG_(transfer) (&ppc32->guest_GPR30, buf, dir, size, mod); break;
 217    case 31: VG_(transfer) (&ppc32->guest_GPR31, buf, dir, size, mod); break;
 218    case 32: VG_(transfer) (&ppc32->guest_VSR0,  buf, dir, size, mod); break;
 219    case 33: VG_(transfer) (&ppc32->guest_VSR1,  buf, dir, size, mod); break;
 220    case 34: VG_(transfer) (&ppc32->guest_VSR2,  buf, dir, size, mod); break;
 221    case 35: VG_(transfer) (&ppc32->guest_VSR3,  buf, dir, size, mod); break;
 222    case 36: VG_(transfer) (&ppc32->guest_VSR4,  buf, dir, size, mod); break;
 223    case 37: VG_(transfer) (&ppc32->guest_VSR5,  buf, dir, size, mod); break;
 224    case 38: VG_(transfer) (&ppc32->guest_VSR6,  buf, dir, size, mod); break;
 225    case 39: VG_(transfer) (&ppc32->guest_VSR7,  buf, dir, size, mod); break;
 226    case 40: VG_(transfer) (&ppc32->guest_VSR8,  buf, dir, size, mod); break;
 227    case 41: VG_(transfer) (&ppc32->guest_VSR9,  buf, dir, size, mod); break;
 228    case 42: VG_(transfer) (&ppc32->guest_VSR10, buf, dir, size, mod); break;
 229    case 43: VG_(transfer) (&ppc32->guest_VSR11, buf, dir, size, mod); break;
 230    case 44: VG_(transfer) (&ppc32->guest_VSR12, buf, dir, size, mod); break;
 231    case 45: VG_(transfer) (&ppc32->guest_VSR13, buf, dir, size, mod); break;
 232    case 46: VG_(transfer) (&ppc32->guest_VSR14, buf, dir, size, mod); break;
 233    case 47: VG_(transfer) (&ppc32->guest_VSR15, buf, dir, size, mod); break;
 234    case 48: VG_(transfer) (&ppc32->guest_VSR16, buf, dir, size, mod); break;
 235    case 49: VG_(transfer) (&ppc32->guest_VSR17, buf, dir, size, mod); break;
 236    case 50: VG_(transfer) (&ppc32->guest_VSR18, buf, dir, size, mod); break;
 237    case 51: VG_(transfer) (&ppc32->guest_VSR19, buf, dir, size, mod); break;
 238    case 52: VG_(transfer) (&ppc32->guest_VSR20, buf, dir, size, mod); break;
 239    case 53: VG_(transfer) (&ppc32->guest_VSR21, buf, dir, size, mod); break;
 240    case 54: VG_(transfer) (&ppc32->guest_VSR22, buf, dir, size, mod); break;
 241    case 55: VG_(transfer) (&ppc32->guest_VSR23, buf, dir, size, mod); break;
 242    case 56: VG_(transfer) (&ppc32->guest_VSR24, buf, dir, size, mod); break;
 243    case 57: VG_(transfer) (&ppc32->guest_VSR25, buf, dir, size, mod); break;
 244    case 58: VG_(transfer) (&ppc32->guest_VSR26, buf, dir, size, mod); break;
 245    case 59: VG_(transfer) (&ppc32->guest_VSR27, buf, dir, size, mod); break;
 246    case 60: VG_(transfer) (&ppc32->guest_VSR28, buf, dir, size, mod); break;
 247    case 61: VG_(transfer) (&ppc32->guest_VSR29, buf, dir, size, mod); break;
 248    case 62: VG_(transfer) (&ppc32->guest_VSR30, buf, dir, size, mod); break;
 249    case 63: VG_(transfer) (&ppc32->guest_VSR31, buf, dir, size, mod); break;
 250    case 64: VG_(transfer) (&ppc32->guest_CIA,   buf, dir, size, mod); break;
 251    case 65: *mod = False; break; // VEX does not model Machine State Register
 252    case 66: {
 253       UInt cr = LibVEX_GuestPPC32_get_CR (ppc32);
 254       if (dir == valgrind_to_gdbserver) {
 255          VG_(transfer) (&cr, buf, dir, size, mod);
 256       } else {
 257          UInt newcr;
 258          VG_(transfer) (&newcr, buf, dir, size, mod);
 259          *mod = newcr != cr;
 260          LibVEX_GuestPPC32_put_CR (newcr, ppc32);
 261       }
 262       break;
 263    }
 264    case 67: VG_(transfer) (&ppc32->guest_LR,    buf, dir, size, mod); break;
 265    case 68: VG_(transfer) (&ppc32->guest_CTR,   buf, dir, size, mod); break;
 266    case 69: {
 267       UInt xer = LibVEX_GuestPPC32_get_XER (ppc32);
 268       if (dir == valgrind_to_gdbserver) {
 269          VG_(transfer) (&xer, buf, dir, size, mod);
 270       } else {
 271          UInt newxer;
 272          VG_(transfer) (&newxer, buf, dir, size, mod);
 273          *mod = newxer != xer;
 274          LibVEX_GuestPPC32_put_XER (newxer, ppc32);
 275       }
 276       break;
 277    }
 278    case 70:  VG_(transfer) (&ppc32->guest_FPROUND, buf, dir, size, mod); break;
 279    case 71:  *mod = False; break; // GDBTD???? VEX { "orig_r3", 3296, 32 },
 280    case 72:  *mod = False; break; // GDBTD???? VEX { "trap", 3328, 32 },
 281    case 73:  VG_(transfer) (&ppc32->guest_VSR32, buf, dir, size, mod); break;
 282    case 74:  VG_(transfer) (&ppc32->guest_VSR33, buf, dir, size, mod); break;
 283    case 75:  VG_(transfer) (&ppc32->guest_VSR34, buf, dir, size, mod); break;
 284    case 76:  VG_(transfer) (&ppc32->guest_VSR35, buf, dir, size, mod); break;
 285    case 77:  VG_(transfer) (&ppc32->guest_VSR36, buf, dir, size, mod); break;
 286    case 78:  VG_(transfer) (&ppc32->guest_VSR37, buf, dir, size, mod); break;
 287    case 79:  VG_(transfer) (&ppc32->guest_VSR38, buf, dir, size, mod); break;
 288    case 80:  VG_(transfer) (&ppc32->guest_VSR39, buf, dir, size, mod); break;
 289    case 81:  VG_(transfer) (&ppc32->guest_VSR40, buf, dir, size, mod); break;
 290    case 82:  VG_(transfer) (&ppc32->guest_VSR41, buf, dir, size, mod); break;
 291    case 83:  VG_(transfer) (&ppc32->guest_VSR42, buf, dir, size, mod); break;
 292    case 84:  VG_(transfer) (&ppc32->guest_VSR43, buf, dir, size, mod); break;
 293    case 85:  VG_(transfer) (&ppc32->guest_VSR44, buf, dir, size, mod); break;
 294    case 86:  VG_(transfer) (&ppc32->guest_VSR45, buf, dir, size, mod); break;
 295    case 87:  VG_(transfer) (&ppc32->guest_VSR46, buf, dir, size, mod); break;
 296    case 88:  VG_(transfer) (&ppc32->guest_VSR47, buf, dir, size, mod); break;
 297    case 89:  VG_(transfer) (&ppc32->guest_VSR48, buf, dir, size, mod); break;
 298    case 90:  VG_(transfer) (&ppc32->guest_VSR49, buf, dir, size, mod); break;
 299    case 91:  VG_(transfer) (&ppc32->guest_VSR50, buf, dir, size, mod); break;
 300    case 92:  VG_(transfer) (&ppc32->guest_VSR51, buf, dir, size, mod); break;
 301    case 93:  VG_(transfer) (&ppc32->guest_VSR52, buf, dir, size, mod); break;
 302    case 94:  VG_(transfer) (&ppc32->guest_VSR53, buf, dir, size, mod); break;
 303    case 95:  VG_(transfer) (&ppc32->guest_VSR54, buf, dir, size, mod); break;
 304    case 96:  VG_(transfer) (&ppc32->guest_VSR55, buf, dir, size, mod); break;
 305    case 97:  VG_(transfer) (&ppc32->guest_VSR56, buf, dir, size, mod); break;
 306    case 98:  VG_(transfer) (&ppc32->guest_VSR57, buf, dir, size, mod); break;
 307    case 99:  VG_(transfer) (&ppc32->guest_VSR58, buf, dir, size, mod); break;
 308    case 100: VG_(transfer) (&ppc32->guest_VSR59, buf, dir, size, mod); break;
 309    case 101: VG_(transfer) (&ppc32->guest_VSR60, buf, dir, size, mod); break;
 310    case 102: VG_(transfer) (&ppc32->guest_VSR61, buf, dir, size, mod); break;
 311    case 103: VG_(transfer) (&ppc32->guest_VSR62, buf, dir, size, mod); break;
 312    case 104: VG_(transfer) (&ppc32->guest_VSR63, buf, dir, size, mod); break;
 313    case 105: VG_(transfer) (&ppc32->guest_VSCR,  buf, dir, size, mod); break;
 314    case 106: VG_(transfer) (&ppc32->guest_VRSAVE, buf, dir, size, mod); break;
 315    default: vg_assert(0);
 316    }
 317 }
 318
 319 static
 320 const char* target_xml (Bool shadow_mode)
 321 {
 322    if (shadow_mode) {
 323       return "powerpc-altivec32l-valgrind.xml";
 324    } else {
 325       return "powerpc-altivec32l.xml";
 326    }
 327 }
 328
 329 static CORE_ADDR** target_get_dtv (ThreadState *tst)
 330 {
 331    VexGuestPPC32State* ppc32 = (VexGuestPPC32State*)&tst->arch.vex;
 332    // ppc32 dtv is located just before the tcb, which is 0x7000 before
 333    // the thread id (r2)
 334    return (CORE_ADDR**)((CORE_ADDR)ppc32->guest_GPR2
 335                         - 0x7000 - sizeof(CORE_ADDR));
 336 }
 337
 338 static struct valgrind_target_ops low_target = {
 339    num_regs,
 340    1, //r1
 341    regs,
 342    transfer_register,
 343    get_pc,
 344    set_pc,
 345    "ppc32",
 346    target_xml,
 347    target_get_dtv
 348 };
 349
 350 void ppc32_init_architecture (struct valgrind_target_ops *target)
 351 {
 352    *target = low_target;
 353    set_register_cache (regs, num_regs);
 354    gdbserver_expedite_regs = expedite_regs;
 355 }
 356