coregrind/m_gdbserver/valgrind-low-s390x.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_s390x.h"
  37
  38 static struct reg regs[] = {
  39   { "pswm", 0, 64 },
  40   { "pswa", 64, 64 },
  41   { "r0", 128, 64 },
  42   { "r1", 192, 64 },
  43   { "r2", 256, 64 },
  44   { "r3", 320, 64 },
  45   { "r4", 384, 64 },
  46   { "r5", 448, 64 },
  47   { "r6", 512, 64 },
  48   { "r7", 576, 64 },
  49   { "r8", 640, 64 },
  50   { "r9", 704, 64 },
  51   { "r10", 768, 64 },
  52   { "r11", 832, 64 },
  53   { "r12", 896, 64 },
  54   { "r13", 960, 64 },
  55   { "r14", 1024, 64 },
  56   { "r15", 1088, 64 },
  57   { "acr0", 1152, 32 },
  58   { "acr1", 1184, 32 },
  59   { "acr2", 1216, 32 },
  60   { "acr3", 1248, 32 },
  61   { "acr4", 1280, 32 },
  62   { "acr5", 1312, 32 },
  63   { "acr6", 1344, 32 },
  64   { "acr7", 1376, 32 },
  65   { "acr8", 1408, 32 },
  66   { "acr9", 1440, 32 },
  67   { "acr10", 1472, 32 },
  68   { "acr11", 1504, 32 },
  69   { "acr12", 1536, 32 },
  70   { "acr13", 1568, 32 },
  71   { "acr14", 1600, 32 },
  72   { "acr15", 1632, 32 },
  73   { "fpc", 1664, 32 },
  74   { "f0", 1696, 64 },
  75   { "f1", 1760, 64 },
  76   { "f2", 1824, 64 },
  77   { "f3", 1888, 64 },
  78   { "f4", 1952, 64 },
  79   { "f5", 2016, 64 },
  80   { "f6", 2080, 64 },
  81   { "f7", 2144, 64 },
  82   { "f8", 2208, 64 },
  83   { "f9", 2272, 64 },
  84   { "f10", 2336, 64 },
  85   { "f11", 2400, 64 },
  86   { "f12", 2464, 64 },
  87   { "f13", 2528, 64 },
  88   { "f14", 2592, 64 },
  89   { "f15", 2656, 64 },
  90   { "orig_r2", 2720, 64 },
  91   { "v0l", 2784, 64 },
  92   { "v1l", 2848, 64 },
  93   { "v2l", 2912, 64 },
  94   { "v3l", 2976, 64 },
  95   { "v4l", 3040, 64 },
  96   { "v5l", 3104, 64 },
  97   { "v6l", 3168, 64 },
  98   { "v7l", 3232, 64 },
  99   { "v8l", 3296, 64 },
 100   { "v9l", 3360, 64 },
 101   { "v10l", 3424, 64 },
 102   { "v11l", 3488, 64 },
 103   { "v12l", 3552, 64 },
 104   { "v13l", 3616, 64 },
 105   { "v14l", 3680, 64 },
 106   { "v15l", 3744, 64 },
 107   { "v16", 3808, 128 },
 108   { "v17", 3936, 128 },
 109   { "v18", 4064, 128 },
 110   { "v19", 4192, 128 },
 111   { "v20", 4320, 128 },
 112   { "v21", 4448, 128 },
 113   { "v22", 4576, 128 },
 114   { "v23", 4704, 128 },
 115   { "v24", 4832, 128 },
 116   { "v25", 4960, 128 },
 117   { "v26", 5088, 128 },
 118   { "v27", 5216, 128 },
 119   { "v28", 5344, 128 },
 120   { "v29", 5472, 128 },
 121   { "v30", 5600, 128 },
 122   { "v31", 5728, 128 },
 123 };
 124 static const char *expedite_regs[] = { "r14", "r15", "pswa", 0 };
 125 #define num_regs_all (sizeof (regs) / sizeof (regs[0]))
 126 static int num_regs;
 127
 128 static
 129 CORE_ADDR get_pc (void)
 130 {
 131    unsigned long pc;
 132
 133    collect_register_by_name ("pswa", &pc);
 134
 135    dlog(1, "stop pc is %p\n", (void *) pc);
 136    return pc;
 137 }
 138
 139 static
 140 void set_pc (CORE_ADDR newpc)
 141 {
 142    Bool mod;
 143    supply_register_by_name ("pswa", &newpc, &mod);
 144    if (mod)
 145       dlog(1, "set pc to %p\n", C2v (newpc));
 146    else
 147       dlog(1, "set pc not changed %p\n", C2v (newpc));
 148 }
 149
 150 /* store registers in the guest state (gdbserver_to_valgrind)
 151    or fetch register from the guest state (valgrind_to_gdbserver). */
 152 static
 153 void transfer_register (ThreadId tid, int abs_regno, void * buf,
 154                         transfer_direction dir, int size, Bool *mod)
 155 {
 156    ThreadState* tst = VG_(get_ThreadState)(tid);
 157    int set = abs_regno / num_regs;
 158    int regno = abs_regno % num_regs;
 159    *mod = False;
 160
 161    VexGuestS390XState* s390x = (VexGuestS390XState*) get_arch (set, tst);
 162
 163    switch (regno) {
 164    // numbers here have to match the order of regs above
 165    // Attention: gdb order does not match valgrind order.
 166    case 0:  *mod = False; break; //GDBTD??? { "pswm", 0, 64 },
 167    case 1:  VG_(transfer) (&s390x->guest_IA,  buf, dir, size, mod); break;
 168    case 2:  VG_(transfer) (&s390x->guest_r0,  buf, dir, size, mod); break;
 169    case 3:  VG_(transfer) (&s390x->guest_r1,  buf, dir, size, mod); break;
 170    case 4:  VG_(transfer) (&s390x->guest_r2,  buf, dir, size, mod); break;
 171    case 5:  VG_(transfer) (&s390x->guest_r3,  buf, dir, size, mod); break;
 172    case 6:  VG_(transfer) (&s390x->guest_r4,  buf, dir, size, mod); break;
 173    case 7:  VG_(transfer) (&s390x->guest_r5,  buf, dir, size, mod); break;
 174    case 8:  VG_(transfer) (&s390x->guest_r6,  buf, dir, size, mod); break;
 175    case 9:  VG_(transfer) (&s390x->guest_r7,  buf, dir, size, mod); break;
 176    case 10: VG_(transfer) (&s390x->guest_r8,  buf, dir, size, mod); break;
 177    case 11: VG_(transfer) (&s390x->guest_r9,  buf, dir, size, mod); break;
 178    case 12: VG_(transfer) (&s390x->guest_r10, buf, dir, size, mod); break;
 179    case 13: VG_(transfer) (&s390x->guest_r11, buf, dir, size, mod); break;
 180    case 14: VG_(transfer) (&s390x->guest_r12, buf, dir, size, mod); break;
 181    case 15: VG_(transfer) (&s390x->guest_r13, buf, dir, size, mod); break;
 182    case 16: VG_(transfer) (&s390x->guest_r14, buf, dir, size, mod); break;
 183    case 17: VG_(transfer) (&s390x->guest_r15, buf, dir, size, mod); break;
 184    case 18: VG_(transfer) (&s390x->guest_a0,  buf, dir, size, mod); break;
 185    case 19: VG_(transfer) (&s390x->guest_a1,  buf, dir, size, mod); break;
 186    case 20: VG_(transfer) (&s390x->guest_a2,  buf, dir, size, mod); break;
 187    case 21: VG_(transfer) (&s390x->guest_a3,  buf, dir, size, mod); break;
 188    case 22: VG_(transfer) (&s390x->guest_a4,  buf, dir, size, mod); break;
 189    case 23: VG_(transfer) (&s390x->guest_a5,  buf, dir, size, mod); break;
 190    case 24: VG_(transfer) (&s390x->guest_a6,  buf, dir, size, mod); break;
 191    case 25: VG_(transfer) (&s390x->guest_a7,  buf, dir, size, mod); break;
 192    case 26: VG_(transfer) (&s390x->guest_a8,  buf, dir, size, mod); break;
 193    case 27: VG_(transfer) (&s390x->guest_a9,  buf, dir, size, mod); break;
 194    case 28: VG_(transfer) (&s390x->guest_a10, buf, dir, size, mod); break;
 195    case 29: VG_(transfer) (&s390x->guest_a11, buf, dir, size, mod); break;
 196    case 30: VG_(transfer) (&s390x->guest_a12, buf, dir, size, mod); break;
 197    case 31: VG_(transfer) (&s390x->guest_a13, buf, dir, size, mod); break;
 198    case 32: VG_(transfer) (&s390x->guest_a14, buf, dir, size, mod); break;
 199    case 33: VG_(transfer) (&s390x->guest_a15, buf, dir, size, mod); break;
 200    case 34: VG_(transfer) (&s390x->guest_fpc, buf, dir, size, mod); break;
 201    case 35: VG_(transfer) (&s390x->guest_v0.w64[0],  buf, dir, size, mod); break;
 202    case 36: VG_(transfer) (&s390x->guest_v1.w64[0],  buf, dir, size, mod); break;
 203    case 37: VG_(transfer) (&s390x->guest_v2.w64[0],  buf, dir, size, mod); break;
 204    case 38: VG_(transfer) (&s390x->guest_v3.w64[0],  buf, dir, size, mod); break;
 205    case 39: VG_(transfer) (&s390x->guest_v4.w64[0],  buf, dir, size, mod); break;
 206    case 40: VG_(transfer) (&s390x->guest_v5.w64[0],  buf, dir, size, mod); break;
 207    case 41: VG_(transfer) (&s390x->guest_v6.w64[0],  buf, dir, size, mod); break;
 208    case 42: VG_(transfer) (&s390x->guest_v7.w64[0],  buf, dir, size, mod); break;
 209    case 43: VG_(transfer) (&s390x->guest_v8.w64[0],  buf, dir, size, mod); break;
 210    case 44: VG_(transfer) (&s390x->guest_v9.w64[0],  buf, dir, size, mod); break;
 211    case 45: VG_(transfer) (&s390x->guest_v10.w64[0], buf, dir, size, mod); break;
 212    case 46: VG_(transfer) (&s390x->guest_v11.w64[0], buf, dir, size, mod); break;
 213    case 47: VG_(transfer) (&s390x->guest_v12.w64[0], buf, dir, size, mod); break;
 214    case 48: VG_(transfer) (&s390x->guest_v13.w64[0], buf, dir, size, mod); break;
 215    case 49: VG_(transfer) (&s390x->guest_v14.w64[0], buf, dir, size, mod); break;
 216    case 50: VG_(transfer) (&s390x->guest_v15.w64[0], buf, dir, size, mod); break;
 217    case 51:  *mod = False; break; //GDBTD??? { "orig_r2", 0, 64 },
 218    case 52: VG_(transfer) (&s390x->guest_v0.w64[1],  buf, dir, size, mod); break;
 219    case 53: VG_(transfer) (&s390x->guest_v1.w64[1],  buf, dir, size, mod); break;
 220    case 54: VG_(transfer) (&s390x->guest_v2.w64[1],  buf, dir, size, mod); break;
 221    case 55: VG_(transfer) (&s390x->guest_v3.w64[1],  buf, dir, size, mod); break;
 222    case 56: VG_(transfer) (&s390x->guest_v4.w64[1],  buf, dir, size, mod); break;
 223    case 57: VG_(transfer) (&s390x->guest_v5.w64[1],  buf, dir, size, mod); break;
 224    case 58: VG_(transfer) (&s390x->guest_v6.w64[1],  buf, dir, size, mod); break;
 225    case 59: VG_(transfer) (&s390x->guest_v7.w64[1],  buf, dir, size, mod); break;
 226    case 60: VG_(transfer) (&s390x->guest_v8.w64[1],  buf, dir, size, mod); break;
 227    case 61: VG_(transfer) (&s390x->guest_v9.w64[1],  buf, dir, size, mod); break;
 228    case 62: VG_(transfer) (&s390x->guest_v10.w64[1], buf, dir, size, mod); break;
 229    case 63: VG_(transfer) (&s390x->guest_v11.w64[1], buf, dir, size, mod); break;
 230    case 64: VG_(transfer) (&s390x->guest_v12.w64[1], buf, dir, size, mod); break;
 231    case 65: VG_(transfer) (&s390x->guest_v13.w64[1], buf, dir, size, mod); break;
 232    case 66: VG_(transfer) (&s390x->guest_v14.w64[1], buf, dir, size, mod); break;
 233    case 67: VG_(transfer) (&s390x->guest_v15.w64[1], buf, dir, size, mod); break;
 234    case 68: VG_(transfer) (&s390x->guest_v16, buf, dir, size, mod); break;
 235    case 69: VG_(transfer) (&s390x->guest_v17, buf, dir, size, mod); break;
 236    case 70: VG_(transfer) (&s390x->guest_v18, buf, dir, size, mod); break;
 237    case 71: VG_(transfer) (&s390x->guest_v19, buf, dir, size, mod); break;
 238    case 72: VG_(transfer) (&s390x->guest_v20, buf, dir, size, mod); break;
 239    case 73: VG_(transfer) (&s390x->guest_v21, buf, dir, size, mod); break;
 240    case 74: VG_(transfer) (&s390x->guest_v22, buf, dir, size, mod); break;
 241    case 75: VG_(transfer) (&s390x->guest_v23, buf, dir, size, mod); break;
 242    case 76: VG_(transfer) (&s390x->guest_v24, buf, dir, size, mod); break;
 243    case 77: VG_(transfer) (&s390x->guest_v25, buf, dir, size, mod); break;
 244    case 78: VG_(transfer) (&s390x->guest_v26, buf, dir, size, mod); break;
 245    case 79: VG_(transfer) (&s390x->guest_v27, buf, dir, size, mod); break;
 246    case 80: VG_(transfer) (&s390x->guest_v28, buf, dir, size, mod); break;
 247    case 81: VG_(transfer) (&s390x->guest_v29, buf, dir, size, mod); break;
 248    case 82: VG_(transfer) (&s390x->guest_v30, buf, dir, size, mod); break;
 249    case 83: VG_(transfer) (&s390x->guest_v31, buf, dir, size, mod); break;
 250    default: vg_assert(0);
 251    }
 252 }
 253
 254 static
 255 Bool have_vx (void)
 256 {
 257    VexArch va;
 258    VexArchInfo vai;
 259    VG_(machine_get_VexArchInfo) (&va, &vai);
 260    return (vai.hwcaps & VEX_HWCAPS_S390X_VX) != 0;
 261 }
 262
 263 static
 264 const char* target_xml (Bool shadow_mode)
 265 {
 266    if (shadow_mode) {
 267       if (have_vx())
 268          return "s390x-vx-linux-valgrind.xml";
 269       else
 270          return "s390x-generic-valgrind.xml";
 271    } else {
 272       if (have_vx())
 273          return "s390x-vx-linux.xml";
 274       else
 275          return "s390x-generic.xml";
 276    }
 277 }
 278
 279 static CORE_ADDR** target_get_dtv (ThreadState *tst)
 280 {
 281    VexGuestS390XState* s390x = (VexGuestS390XState*)&tst->arch.vex;
 282    // Thread pointer is in a0 (high 32 bits) and a1. Dtv is the second word.
 283    return (CORE_ADDR**)((Addr)((Addr64)s390x->guest_a0 << 32
 284                               | (Addr64)s390x->guest_a1)
 285                         + sizeof(CORE_ADDR));
 286 }
 287
 288 static struct valgrind_target_ops low_target = {
 289    -1, // Override at init time.
 290    regs,
 291    17, //sp = r15, which is register offset 17 in regs
 292    transfer_register,
 293    get_pc,
 294    set_pc,
 295    "s390x",
 296    target_xml,
 297    target_get_dtv
 298 };
 299
 300 void s390x_init_architecture (struct valgrind_target_ops *target)
 301 {
 302    *target = low_target;
 303    if (have_vx())
 304       num_regs = num_regs_all;
 305    else
 306       num_regs = num_regs_all - 32; // Remove all VX registers.
 307    target->num_regs = num_regs;
 308    set_register_cache (regs, num_regs);
 309    gdbserver_expedite_regs = expedite_regs;
 310 }