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 Bool mod; 168 supply_register_by_name ("pc", &newpc, &mod); 169 if (mod) 170 dlog(1, "set pc to %p\n", C2v (newpc)); 171 else 172 dlog(1, "set pc not changed %p\n", C2v (newpc)); 173 } 174 175 /* store registers in the guest state (gdbserver_to_valgrind) 176 or fetch register from the guest state (valgrind_to_gdbserver). */ 177 static 178 void transfer_register (ThreadId tid, int abs_regno, void * buf, 179 transfer_direction dir, int size, Bool *mod) 180 { 181 ThreadState* tst = VG_(get_ThreadState)(tid); 182 int set = abs_regno / num_regs; 183 int regno = abs_regno % num_regs; 184 *mod = False; 185 186 VexGuestPPC32State* ppc32 = (VexGuestPPC32State*) get_arch (set, tst); 187 188 switch (regno) { 189 // numbers here have to match the order of regs above 190 // Attention: gdb order does not match valgrind order. 191 case 0: VG_(transfer) (&ppc32->guest_GPR0, buf, dir, size, mod); break; 192 case 1: VG_(transfer) (&ppc32->guest_GPR1, buf, dir, size, mod); break; 193 case 2: VG_(transfer) (&ppc32->guest_GPR2, buf, dir, size, mod); break; 194 case 3: VG_(transfer) (&ppc32->guest_GPR3, buf, dir, size, mod); break; 195 case 4: VG_(transfer) (&ppc32->guest_GPR4, buf, dir, size, mod); break; 196 case 5: VG_(transfer) (&ppc32->guest_GPR5, buf, dir, size, mod); break; 197 case 6: VG_(transfer) (&ppc32->guest_GPR6, buf, dir, size, mod); break; 198 case 7: VG_(transfer) (&ppc32->guest_GPR7, buf, dir, size, mod); break; 199 case 8: VG_(transfer) (&ppc32->guest_GPR8, buf, dir, size, mod); break; 200 case 9: VG_(transfer) (&ppc32->guest_GPR9, buf, dir, size, mod); break; 201 case 10: VG_(transfer) (&ppc32->guest_GPR10, buf, dir, size, mod); break; 202 case 11: VG_(transfer) (&ppc32->guest_GPR11, buf, dir, size, mod); break; 203 case 12: VG_(transfer) (&ppc32->guest_GPR12, buf, dir, size, mod); break; 204 case 13: VG_(transfer) (&ppc32->guest_GPR13, buf, dir, size, mod); break; 205 case 14: VG_(transfer) (&ppc32->guest_GPR14, buf, dir, size, mod); break; 206 case 15: VG_(transfer) (&ppc32->guest_GPR15, buf, dir, size, mod); break; 207 case 16: VG_(transfer) (&ppc32->guest_GPR16, buf, dir, size, mod); break; 208 case 17: VG_(transfer) (&ppc32->guest_GPR17, buf, dir, size, mod); break; 209 case 18: VG_(transfer) (&ppc32->guest_GPR18, buf, dir, size, mod); break; 210 case 19: VG_(transfer) (&ppc32->guest_GPR19, buf, dir, size, mod); break; 211 case 20: VG_(transfer) (&ppc32->guest_GPR20, buf, dir, size, mod); break; 212 case 21: VG_(transfer) (&ppc32->guest_GPR21, buf, dir, size, mod); break; 213 case 22: VG_(transfer) (&ppc32->guest_GPR22, buf, dir, size, mod); break; 214 case 23: VG_(transfer) (&ppc32->guest_GPR23, buf, dir, size, mod); break; 215 case 24: VG_(transfer) (&ppc32->guest_GPR24, buf, dir, size, mod); break; 216 case 25: VG_(transfer) (&ppc32->guest_GPR25, buf, dir, size, mod); break; 217 case 26: VG_(transfer) (&ppc32->guest_GPR26, buf, dir, size, mod); break; 218 case 27: VG_(transfer) (&ppc32->guest_GPR27, buf, dir, size, mod); break; 219 case 28: VG_(transfer) (&ppc32->guest_GPR28, buf, dir, size, mod); break; 220 case 29: VG_(transfer) (&ppc32->guest_GPR29, buf, dir, size, mod); break; 221 case 30: VG_(transfer) (&ppc32->guest_GPR30, buf, dir, size, mod); break; 222 case 31: VG_(transfer) (&ppc32->guest_GPR31, buf, dir, size, mod); break; 223 case 32: VG_(transfer) (&ppc32->guest_VSR0, buf, dir, size, mod); break; 224 case 33: VG_(transfer) (&ppc32->guest_VSR1, buf, dir, size, mod); break; 225 case 34: VG_(transfer) (&ppc32->guest_VSR2, buf, dir, size, mod); break; 226 case 35: VG_(transfer) (&ppc32->guest_VSR3, buf, dir, size, mod); break; 227 case 36: VG_(transfer) (&ppc32->guest_VSR4, buf, dir, size, mod); break; 228 case 37: VG_(transfer) (&ppc32->guest_VSR5, buf, dir, size, mod); break; 229 case 38: VG_(transfer) (&ppc32->guest_VSR6, buf, dir, size, mod); break; 230 case 39: VG_(transfer) (&ppc32->guest_VSR7, buf, dir, size, mod); break; 231 case 40: VG_(transfer) (&ppc32->guest_VSR8, buf, dir, size, mod); break; 232 case 41: VG_(transfer) (&ppc32->guest_VSR9, buf, dir, size, mod); break; 233 case 42: VG_(transfer) (&ppc32->guest_VSR10, buf, dir, size, mod); break; 234 case 43: VG_(transfer) (&ppc32->guest_VSR11, buf, dir, size, mod); break; 235 case 44: VG_(transfer) (&ppc32->guest_VSR12, buf, dir, size, mod); break; 236 case 45: VG_(transfer) (&ppc32->guest_VSR13, buf, dir, size, mod); break; 237 case 46: VG_(transfer) (&ppc32->guest_VSR14, buf, dir, size, mod); break; 238 case 47: VG_(transfer) (&ppc32->guest_VSR15, buf, dir, size, mod); break; 239 case 48: VG_(transfer) (&ppc32->guest_VSR16, buf, dir, size, mod); break; 240 case 49: VG_(transfer) (&ppc32->guest_VSR17, buf, dir, size, mod); break; 241 case 50: VG_(transfer) (&ppc32->guest_VSR18, buf, dir, size, mod); break; 242 case 51: VG_(transfer) (&ppc32->guest_VSR19, buf, dir, size, mod); break; 243 case 52: VG_(transfer) (&ppc32->guest_VSR20, buf, dir, size, mod); break; 244 case 53: VG_(transfer) (&ppc32->guest_VSR21, buf, dir, size, mod); break; 245 case 54: VG_(transfer) (&ppc32->guest_VSR22, buf, dir, size, mod); break; 246 case 55: VG_(transfer) (&ppc32->guest_VSR23, buf, dir, size, mod); break; 247 case 56: VG_(transfer) (&ppc32->guest_VSR24, buf, dir, size, mod); break; 248 case 57: VG_(transfer) (&ppc32->guest_VSR25, buf, dir, size, mod); break; 249 case 58: VG_(transfer) (&ppc32->guest_VSR26, buf, dir, size, mod); break; 250 case 59: VG_(transfer) (&ppc32->guest_VSR27, buf, dir, size, mod); break; 251 case 60: VG_(transfer) (&ppc32->guest_VSR28, buf, dir, size, mod); break; 252 case 61: VG_(transfer) (&ppc32->guest_VSR29, buf, dir, size, mod); break; 253 case 62: VG_(transfer) (&ppc32->guest_VSR30, buf, dir, size, mod); break; 254 case 63: VG_(transfer) (&ppc32->guest_VSR31, buf, dir, size, mod); break; 255 case 64: VG_(transfer) (&ppc32->guest_CIA, buf, dir, size, mod); break; 256 case 65: *mod = False; break; // VEX does not model Machine State Register 257 case 66: { 258 UInt cr = LibVEX_GuestPPC32_get_CR (ppc32); 259 if (dir == valgrind_to_gdbserver) { 260 VG_(transfer) (&cr, buf, dir, size, mod); 261 } else { 262 UInt newcr; 263 VG_(transfer) (&newcr, buf, dir, size, mod); 264 *mod = newcr != cr; 265 LibVEX_GuestPPC32_put_CR (newcr, ppc32); 266 } 267 break; 268 } 269 case 67: VG_(transfer) (&ppc32->guest_LR, buf, dir, size, mod); break; 270 case 68: VG_(transfer) (&ppc32->guest_CTR, buf, dir, size, mod); break; 271 case 69: { 272 UInt xer = LibVEX_GuestPPC32_get_XER (ppc32); 273 if (dir == valgrind_to_gdbserver) { 274 VG_(transfer) (&xer, buf, dir, size, mod); 275 } else { 276 UInt newxer; 277 VG_(transfer) (&newxer, buf, dir, size, mod); 278 *mod = newxer != xer; 279 LibVEX_GuestPPC32_put_XER (newxer, ppc32); 280 } 281 break; 282 } 283 case 70: VG_(transfer) (&ppc32->guest_FPROUND, buf, dir, size, mod); break; 284 case 71: *mod = False; break; // GDBTD???? VEX { "orig_r3", 3296, 32 }, 285 case 72: *mod = False; break; // GDBTD???? VEX { "trap", 3328, 32 }, 286 case 73: VG_(transfer) (&ppc32->guest_VSR32, buf, dir, size, mod); break; 287 case 74: VG_(transfer) (&ppc32->guest_VSR33, buf, dir, size, mod); break; 288 case 75: VG_(transfer) (&ppc32->guest_VSR34, buf, dir, size, mod); break; 289 case 76: VG_(transfer) (&ppc32->guest_VSR35, buf, dir, size, mod); break; 290 case 77: VG_(transfer) (&ppc32->guest_VSR36, buf, dir, size, mod); break; 291 case 78: VG_(transfer) (&ppc32->guest_VSR37, buf, dir, size, mod); break; 292 case 79: VG_(transfer) (&ppc32->guest_VSR38, buf, dir, size, mod); break; 293 case 80: VG_(transfer) (&ppc32->guest_VSR39, buf, dir, size, mod); break; 294 case 81: VG_(transfer) (&ppc32->guest_VSR40, buf, dir, size, mod); break; 295 case 82: VG_(transfer) (&ppc32->guest_VSR41, buf, dir, size, mod); break; 296 case 83: VG_(transfer) (&ppc32->guest_VSR42, buf, dir, size, mod); break; 297 case 84: VG_(transfer) (&ppc32->guest_VSR43, buf, dir, size, mod); break; 298 case 85: VG_(transfer) (&ppc32->guest_VSR44, buf, dir, size, mod); break; 299 case 86: VG_(transfer) (&ppc32->guest_VSR45, buf, dir, size, mod); break; 300 case 87: VG_(transfer) (&ppc32->guest_VSR46, buf, dir, size, mod); break; 301 case 88: VG_(transfer) (&ppc32->guest_VSR47, buf, dir, size, mod); break; 302 case 89: VG_(transfer) (&ppc32->guest_VSR48, buf, dir, size, mod); break; 303 case 90: VG_(transfer) (&ppc32->guest_VSR49, buf, dir, size, mod); break; 304 case 91: VG_(transfer) (&ppc32->guest_VSR50, buf, dir, size, mod); break; 305 case 92: VG_(transfer) (&ppc32->guest_VSR51, buf, dir, size, mod); break; 306 case 93: VG_(transfer) (&ppc32->guest_VSR52, buf, dir, size, mod); break; 307 case 94: VG_(transfer) (&ppc32->guest_VSR53, buf, dir, size, mod); break; 308 case 95: VG_(transfer) (&ppc32->guest_VSR54, buf, dir, size, mod); break; 309 case 96: VG_(transfer) (&ppc32->guest_VSR55, buf, dir, size, mod); break; 310 case 97: VG_(transfer) (&ppc32->guest_VSR56, buf, dir, size, mod); break; 311 case 98: VG_(transfer) (&ppc32->guest_VSR57, buf, dir, size, mod); break; 312 case 99: VG_(transfer) (&ppc32->guest_VSR58, buf, dir, size, mod); break; 313 case 100: VG_(transfer) (&ppc32->guest_VSR59, buf, dir, size, mod); break; 314 case 101: VG_(transfer) (&ppc32->guest_VSR60, buf, dir, size, mod); break; 315 case 102: VG_(transfer) (&ppc32->guest_VSR61, buf, dir, size, mod); break; 316 case 103: VG_(transfer) (&ppc32->guest_VSR62, buf, dir, size, mod); break; 317 case 104: VG_(transfer) (&ppc32->guest_VSR63, buf, dir, size, mod); break; 318 case 105: VG_(transfer) (&ppc32->guest_VSCR, buf, dir, size, mod); break; 319 case 106: VG_(transfer) (&ppc32->guest_VRSAVE, buf, dir, size, mod); break; 320 default: vg_assert(0); 321 } 322 } 323 324 static 325 const char* target_xml (Bool shadow_mode) 326 { 327 if (shadow_mode) { 328 return "powerpc-altivec32l-valgrind.xml"; 329 } else { 330 return "powerpc-altivec32l.xml"; 331 } 332 } 333 334 static CORE_ADDR** target_get_dtv (ThreadState *tst) 335 { 336 VexGuestPPC32State* ppc32 = (VexGuestPPC32State*)&tst->arch.vex; 337 // ppc32 dtv is located just before the tcb, which is 0x7000 before 338 // the thread id (r2) 339 return (CORE_ADDR**)((CORE_ADDR)ppc32->guest_GPR2 340 - 0x7000 - sizeof(CORE_ADDR)); 341 } 342 343 static struct valgrind_target_ops low_target = { 344 num_regs, 345 regs, 346 1, //r1 347 transfer_register, 348 get_pc, 349 set_pc, 350 "ppc32", 351 target_xml, 352 target_get_dtv 353 }; 354 355 void ppc32_init_architecture (struct valgrind_target_ops *target) 356 { 357 *target = low_target; 358 set_register_cache (regs, num_regs); 359 gdbserver_expedite_regs = expedite_regs; 360 } 361 362
