1 2 /*--------------------------------------------------------------------*/ 3 /*--- Platform-specific syscalls stuff. syswrap-amd64-solaris.c ---*/ 4 /*--------------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2014-2015 Petr Pavlu 11 setup (at) dagobah.cz 12 13 This program is free software; you can redistribute it and/or 14 modify it under the terms of the GNU General Public License as 15 published by the Free Software Foundation; either version 2 of the 16 License, or (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, but 19 WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 26 02111-1307, USA. 27 28 The GNU General Public License is contained in the file COPYING. 29 */ 30 31 #if defined(VGP_amd64_solaris) 32 33 #include "libvex_guest_offsets.h" 34 #include "pub_core_basics.h" 35 #include "pub_core_debuglog.h" 36 #include "pub_core_vki.h" 37 #include "pub_core_libcassert.h" 38 #include "pub_core_libcbase.h" 39 #include "pub_core_libcprint.h" 40 #include "pub_core_libcsignal.h" 41 #include "pub_core_tooliface.h" 42 #include "pub_core_syswrap.h" 43 44 #include "priv_types_n_macros.h" 45 #include "priv_syswrap-generic.h" 46 #include "priv_syswrap-solaris.h" 47 48 49 /* Call f(arg1), but first switch stacks, using 'stack' as the new stack, and 50 use 'retaddr' as f's return-to address. Also, clear all the integer 51 registers before entering f. */ 52 __attribute__((noreturn)) 53 void ML_(call_on_new_stack_0_1)(Addr stack, /* %rdi */ 54 Addr retaddr, /* %rsi */ 55 void (*f)(Word), /* %rdx */ 56 Word arg1); /* %rcx */ 57 __asm__ ( 58 ".text\n" 59 ".globl vgModuleLocal_call_on_new_stack_0_1\n" 60 "vgModuleLocal_call_on_new_stack_0_1:\n" 61 " movq %rdi, %rsp\n" /* set stack */ 62 " movq %rcx, %rdi\n" /* set arg1 */ 63 " pushq %rsi\n" /* retaddr to stack */ 64 " pushq %rdx\n" /* f to stack */ 65 " movq $0, %rax\n" /* zero all GP regs (except %rdi) */ 66 " movq $0, %rbx\n" 67 " movq $0, %rcx\n" 68 " movq $0, %rdx\n" 69 " movq $0, %rsi\n" 70 " movq $0, %rbp\n" 71 " movq $0, %r8\n" 72 " movq $0, %r9\n" 73 " movq $0, %r10\n" 74 " movq $0, %r11\n" 75 " movq $0, %r12\n" 76 " movq $0, %r13\n" 77 " movq $0, %r14\n" 78 " movq $0, %r15\n" 79 " ret\n" /* jump to f */ 80 " ud2\n" /* should never get here */ 81 ".previous\n" 82 ); 83 84 /* This function is called to setup a context of a new Valgrind thread (which 85 will run the client code). */ 86 void ML_(setup_start_thread_context)(ThreadId tid, vki_ucontext_t *uc) 87 { 88 ThreadState *tst = VG_(get_ThreadState)(tid); 89 UWord *stack = (UWord*)tst->os_state.valgrind_stack_init_SP; 90 91 VG_(memset)(uc, 0, sizeof(*uc)); 92 uc->uc_flags = VKI_UC_CPU | VKI_UC_SIGMASK; 93 94 /* Start the thread with everything blocked. */ 95 VG_(sigfillset)(&uc->uc_sigmask); 96 97 /* Set up the stack, it should be always 16-byte aligned before doing 98 a function call, i.e. the first parameter is also 16-byte aligned. */ 99 vg_assert(VG_IS_16_ALIGNED(stack)); 100 stack -= 1; 101 stack[0] = 0; /* bogus return value */ 102 103 /* Set up the registers. */ 104 uc->uc_mcontext.gregs[VKI_REG_RDI] = (UWord)tst; /* the parameter */ 105 uc->uc_mcontext.gregs[VKI_REG_RIP] = (UWord)ML_(start_thread_NORETURN); 106 uc->uc_mcontext.gregs[VKI_REG_RSP] = (UWord)stack; 107 } 108 109 /* Architecture-specific part of VG_(save_context). */ 110 void ML_(save_machine_context)(ThreadId tid, vki_ucontext_t *uc, 111 CorePart part) 112 { 113 ThreadState *tst = VG_(get_ThreadState)(tid); 114 struct vki_fpchip_state *fs 115 = &uc->uc_mcontext.fpregs.fp_reg_set.fpchip_state; 116 SizeT i; 117 118 /* CPU */ 119 /* Common registers */ 120 uc->uc_mcontext.gregs[VKI_REG_RIP] = tst->arch.vex.guest_RIP; 121 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RIP, 122 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RIP], sizeof(UWord)); 123 uc->uc_mcontext.gregs[VKI_REG_RAX] = tst->arch.vex.guest_RAX; 124 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RAX, 125 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RAX], sizeof(UWord)); 126 uc->uc_mcontext.gregs[VKI_REG_RBX] = tst->arch.vex.guest_RBX; 127 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RBX, 128 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RBX], sizeof(UWord)); 129 uc->uc_mcontext.gregs[VKI_REG_RCX] = tst->arch.vex.guest_RCX; 130 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RCX, 131 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RCX], sizeof(UWord)); 132 uc->uc_mcontext.gregs[VKI_REG_RDX] = tst->arch.vex.guest_RDX; 133 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RDX, 134 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RDX], sizeof(UWord)); 135 uc->uc_mcontext.gregs[VKI_REG_RBP] = tst->arch.vex.guest_RBP; 136 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RBP, 137 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RBP], sizeof(UWord)); 138 uc->uc_mcontext.gregs[VKI_REG_RSI] = tst->arch.vex.guest_RSI; 139 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RSI, 140 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RSI], sizeof(UWord)); 141 uc->uc_mcontext.gregs[VKI_REG_RDI] = tst->arch.vex.guest_RDI; 142 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RDI, 143 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RDI], sizeof(UWord)); 144 uc->uc_mcontext.gregs[VKI_REG_R8] = tst->arch.vex.guest_R8; 145 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R8, 146 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R8], sizeof(UWord)); 147 uc->uc_mcontext.gregs[VKI_REG_R9] = tst->arch.vex.guest_R9; 148 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R9, 149 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R9], sizeof(UWord)); 150 uc->uc_mcontext.gregs[VKI_REG_R10] = tst->arch.vex.guest_R10; 151 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R10, 152 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R10], sizeof(UWord)); 153 uc->uc_mcontext.gregs[VKI_REG_R11] = tst->arch.vex.guest_R11; 154 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R11, 155 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R11], sizeof(UWord)); 156 uc->uc_mcontext.gregs[VKI_REG_R12] = tst->arch.vex.guest_R12; 157 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R12, 158 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R12], sizeof(UWord)); 159 uc->uc_mcontext.gregs[VKI_REG_R13] = tst->arch.vex.guest_R13; 160 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R13, 161 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R13], sizeof(UWord)); 162 uc->uc_mcontext.gregs[VKI_REG_R14] = tst->arch.vex.guest_R14; 163 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R14, 164 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R14], sizeof(UWord)); 165 uc->uc_mcontext.gregs[VKI_REG_R15] = tst->arch.vex.guest_R15; 166 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_R15, 167 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R15], sizeof(UWord)); 168 uc->uc_mcontext.gregs[VKI_REG_RSP] = tst->arch.vex.guest_RSP; 169 VG_TRACK(copy_reg_to_mem, part, tid, OFFSET_amd64_RSP, 170 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RSP], sizeof(UWord)); 171 172 /* ERR and TRAPNO */ 173 uc->uc_mcontext.gregs[VKI_REG_ERR] = 0; 174 VG_TRACK(post_mem_write, part, tid, 175 (Addr)&uc->uc_mcontext.gregs[VKI_REG_ERR], sizeof(UWord)); 176 uc->uc_mcontext.gregs[VKI_REG_TRAPNO] = 0; 177 VG_TRACK(post_mem_write, part, tid, 178 (Addr)&uc->uc_mcontext.gregs[VKI_REG_TRAPNO], sizeof(UWord)); 179 180 /* Segment registers */ 181 /* Valgrind does not support moves from/to segment registers on AMD64. The 182 values returned below are the ones that are set by the kernel when 183 a program is started. */ 184 uc->uc_mcontext.gregs[VKI_REG_CS] = VKI_UCS_SEL; 185 VG_TRACK(post_mem_write, part, tid, 186 (Addr)&uc->uc_mcontext.gregs[VKI_REG_CS], sizeof(UWord)); 187 uc->uc_mcontext.gregs[VKI_REG_DS] = 0; 188 VG_TRACK(post_mem_write, part, tid, 189 (Addr)&uc->uc_mcontext.gregs[VKI_REG_DS], sizeof(UWord)); 190 uc->uc_mcontext.gregs[VKI_REG_SS] = VKI_UDS_SEL; 191 VG_TRACK(post_mem_write, part, tid, 192 (Addr)&uc->uc_mcontext.gregs[VKI_REG_SS], sizeof(UWord)); 193 uc->uc_mcontext.gregs[VKI_REG_ES] = 0; 194 VG_TRACK(post_mem_write, part, tid, 195 (Addr)&uc->uc_mcontext.gregs[VKI_REG_ES], sizeof(UWord)); 196 uc->uc_mcontext.gregs[VKI_REG_FS] = 0; 197 VG_TRACK(post_mem_write, part, tid, 198 (Addr)&uc->uc_mcontext.gregs[VKI_REG_FS], sizeof(UWord)); 199 uc->uc_mcontext.gregs[VKI_REG_GS] = 0; 200 VG_TRACK(post_mem_write, part, tid, 201 (Addr)&uc->uc_mcontext.gregs[VKI_REG_GS], sizeof(UWord)); 202 203 /* Segment bases */ 204 uc->uc_mcontext.gregs[VKI_REG_FSBASE] = tst->arch.vex.guest_FS_CONST; 205 VG_TRACK(post_mem_write, part, tid, 206 (Addr)&uc->uc_mcontext.gregs[VKI_REG_FSBASE], sizeof(UWord)); 207 uc->uc_mcontext.gregs[VKI_REG_GSBASE] = 0; 208 VG_TRACK(post_mem_write, part, tid, 209 (Addr)&uc->uc_mcontext.gregs[VKI_REG_GSBASE], sizeof(UWord)); 210 211 /* Handle rflags. Refer to the x86-solaris variant of this code for 212 a detailed description. */ 213 uc->uc_mcontext.gregs[VKI_REG_RFL] = 214 LibVEX_GuestAMD64_get_rflags(&tst->arch.vex); 215 VG_TRACK(post_mem_write, part, tid, 216 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RFL], sizeof(UWord)); 217 VKI_UC_GUEST_CC_OP(uc) = tst->arch.vex.guest_CC_OP; 218 VKI_UC_GUEST_CC_NDEP(uc) = tst->arch.vex.guest_CC_NDEP; 219 VKI_UC_GUEST_CC_DEP1(uc) = tst->arch.vex.guest_CC_DEP1; 220 VG_TRACK(copy_reg_to_mem, part, tid, 221 offsetof(VexGuestAMD64State, guest_CC_DEP1), 222 (Addr)&VKI_UC_GUEST_CC_DEP1(uc), sizeof(UWord)); 223 VKI_UC_GUEST_CC_DEP2(uc) = tst->arch.vex.guest_CC_DEP2; 224 VG_TRACK(copy_reg_to_mem, part, tid, 225 offsetof(VexGuestAMD64State, guest_CC_DEP2), 226 (Addr)&VKI_UC_GUEST_CC_DEP2(uc), sizeof(UWord)); 227 VKI_UC_GUEST_RFLAGS_NEG(uc) = ~uc->uc_mcontext.gregs[VKI_REG_RFL]; 228 /* Calculate a checksum. */ 229 { 230 ULong buf[5]; 231 ULong checksum; 232 233 buf[0] = VKI_UC_GUEST_CC_OP(uc); 234 buf[1] = VKI_UC_GUEST_CC_NDEP(uc); 235 buf[2] = VKI_UC_GUEST_CC_DEP1(uc); 236 buf[3] = VKI_UC_GUEST_CC_DEP2(uc); 237 buf[4] = uc->uc_mcontext.gregs[VKI_REG_RFL]; 238 checksum = ML_(fletcher64)((UInt*)&buf, sizeof(buf) / sizeof(UInt)); 239 VKI_UC_GUEST_RFLAGS_CHECKSUM(uc) = checksum; 240 } 241 242 /* FPU */ 243 /* The fpregset_t structure on amd64 follows the layout that is used by the 244 FXSAVE instruction, therefore it is only necessary to call a VEX 245 function that simulates this instruction. */ 246 LibVEX_GuestAMD64_fxsave(&tst->arch.vex, (HWord)fs); 247 248 /* Control word */ 249 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->cw, sizeof(fs->cw)); 250 /* Status word */ 251 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->sw, sizeof(fs->sw)); 252 /* Compressed tag word */ 253 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->fctw, sizeof(fs->fctw)); 254 /* Unused */ 255 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->__fx_rsvd, 256 sizeof(fs->__fx_rsvd)); 257 vg_assert(fs->__fx_rsvd == 0); 258 /* Last x87 opcode */ 259 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->fop, sizeof(fs->fop)); 260 vg_assert(fs->fop == 0); 261 /* Last x87 instruction pointer */ 262 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->rip, sizeof(fs->rip)); 263 vg_assert(fs->rip == 0); 264 /* Last x87 data pointer */ 265 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->rdp, sizeof(fs->rdp)); 266 vg_assert(fs->rdp == 0); 267 /* Media-instruction control and status register */ 268 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->mxcsr, sizeof(fs->mxcsr)); 269 /* Supported features in MXCSR */ 270 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->mxcsr_mask, 271 sizeof(fs->mxcsr_mask)); 272 273 /* ST registers */ 274 for (i = 0; i < 8; i++) { 275 Addr addr = (Addr)&fs->st[i]; 276 /* x87 uses 80b FP registers but VEX uses only 64b registers, thus we 277 have to lie here. :< */ 278 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 279 guest_FPREG[i]), addr, sizeof(ULong)); 280 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 281 guest_FPREG[i]), addr + 8, sizeof(UShort)); 282 } 283 284 /* XMM registers */ 285 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 286 guest_YMM0), (Addr)&fs->xmm[0], sizeof(U128)); 287 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 288 guest_YMM1), (Addr)&fs->xmm[1], sizeof(U128)); 289 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 290 guest_YMM2), (Addr)&fs->xmm[2], sizeof(U128)); 291 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 292 guest_YMM3), (Addr)&fs->xmm[3], sizeof(U128)); 293 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 294 guest_YMM4), (Addr)&fs->xmm[4], sizeof(U128)); 295 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 296 guest_YMM5), (Addr)&fs->xmm[5], sizeof(U128)); 297 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 298 guest_YMM6), (Addr)&fs->xmm[6], sizeof(U128)); 299 VG_TRACK(copy_reg_to_mem, part, tid, offsetof(VexGuestAMD64State, 300 guest_YMM7), (Addr)&fs->xmm[7], sizeof(U128)); 301 302 /* Status word (sw) at exception */ 303 fs->status = 0; 304 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->status, sizeof(fs->status)); 305 306 /* MXCSR at exception */ 307 fs->xstatus = 0; 308 VG_TRACK(post_mem_write, part, tid, (Addr)&fs->xstatus, 309 sizeof(fs->xstatus)); 310 } 311 312 /* Architecture-specific part of VG_(restore_context). */ 313 void ML_(restore_machine_context)(ThreadId tid, vki_ucontext_t *uc, 314 CorePart part, Bool esp_is_thrptr) 315 { 316 ThreadState *tst = VG_(get_ThreadState)(tid); 317 struct vki_fpchip_state *fs 318 = &uc->uc_mcontext.fpregs.fp_reg_set.fpchip_state; 319 320 /* CPU */ 321 if (uc->uc_flags & VKI_UC_CPU) { 322 /* Common registers */ 323 tst->arch.vex.guest_RIP = uc->uc_mcontext.gregs[VKI_REG_RIP]; 324 VG_TRACK(copy_mem_to_reg, part, tid, 325 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RIP], OFFSET_amd64_RIP, 326 sizeof(UWord)); 327 tst->arch.vex.guest_RAX = uc->uc_mcontext.gregs[VKI_REG_RAX]; 328 VG_TRACK(copy_mem_to_reg, part, tid, 329 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RAX], OFFSET_amd64_RAX, 330 sizeof(UWord)); 331 tst->arch.vex.guest_RBX = uc->uc_mcontext.gregs[VKI_REG_RBX]; 332 VG_TRACK(copy_mem_to_reg, part, tid, 333 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RBX], OFFSET_amd64_RBX, 334 sizeof(UWord)); 335 tst->arch.vex.guest_RCX = uc->uc_mcontext.gregs[VKI_REG_RCX]; 336 VG_TRACK(copy_mem_to_reg, part, tid, 337 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RCX], OFFSET_amd64_RCX, 338 sizeof(UWord)); 339 tst->arch.vex.guest_RDX = uc->uc_mcontext.gregs[VKI_REG_RDX]; 340 VG_TRACK(copy_mem_to_reg, part, tid, 341 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RDX], OFFSET_amd64_RDX, 342 sizeof(UWord)); 343 tst->arch.vex.guest_RBP = uc->uc_mcontext.gregs[VKI_REG_RBP]; 344 VG_TRACK(copy_mem_to_reg, part, tid, 345 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RBP], OFFSET_amd64_RBP, 346 sizeof(UWord)); 347 tst->arch.vex.guest_RSI = uc->uc_mcontext.gregs[VKI_REG_RSI]; 348 VG_TRACK(copy_mem_to_reg, part, tid, 349 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RSI], OFFSET_amd64_RSI, 350 sizeof(UWord)); 351 tst->arch.vex.guest_RDI = uc->uc_mcontext.gregs[VKI_REG_RDI]; 352 VG_TRACK(copy_mem_to_reg, part, tid, 353 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RDI], OFFSET_amd64_RDI, 354 sizeof(UWord)); 355 tst->arch.vex.guest_R8 = uc->uc_mcontext.gregs[VKI_REG_R8]; 356 VG_TRACK(copy_mem_to_reg, part, tid, 357 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R8], OFFSET_amd64_R8, 358 sizeof(UWord)); 359 tst->arch.vex.guest_R9 = uc->uc_mcontext.gregs[VKI_REG_R9]; 360 VG_TRACK(copy_mem_to_reg, part, tid, 361 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R9], OFFSET_amd64_R9, 362 sizeof(UWord)); 363 tst->arch.vex.guest_R10 = uc->uc_mcontext.gregs[VKI_REG_R10]; 364 VG_TRACK(copy_mem_to_reg, part, tid, 365 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R10], OFFSET_amd64_R10, 366 sizeof(UWord)); 367 tst->arch.vex.guest_R11 = uc->uc_mcontext.gregs[VKI_REG_R11]; 368 VG_TRACK(copy_mem_to_reg, part, tid, 369 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R11], OFFSET_amd64_R11, 370 sizeof(UWord)); 371 tst->arch.vex.guest_R12 = uc->uc_mcontext.gregs[VKI_REG_R12]; 372 VG_TRACK(copy_mem_to_reg, part, tid, 373 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R12], OFFSET_amd64_R12, 374 sizeof(UWord)); 375 tst->arch.vex.guest_R13 = uc->uc_mcontext.gregs[VKI_REG_R13]; 376 VG_TRACK(copy_mem_to_reg, part, tid, 377 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R13], OFFSET_amd64_R13, 378 sizeof(UWord)); 379 tst->arch.vex.guest_R14 = uc->uc_mcontext.gregs[VKI_REG_R14]; 380 VG_TRACK(copy_mem_to_reg, part, tid, 381 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R14], OFFSET_amd64_R14, 382 sizeof(UWord)); 383 tst->arch.vex.guest_R15 = uc->uc_mcontext.gregs[VKI_REG_R15]; 384 VG_TRACK(copy_mem_to_reg, part, tid, 385 (Addr)&uc->uc_mcontext.gregs[VKI_REG_R15], OFFSET_amd64_R15, 386 sizeof(UWord)); 387 tst->arch.vex.guest_RSP = uc->uc_mcontext.gregs[VKI_REG_RSP]; 388 VG_TRACK(copy_mem_to_reg, part, tid, 389 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RSP], OFFSET_amd64_RSP, 390 sizeof(UWord)); 391 392 /* Ignore ERR and TRAPNO. */ 393 394 /* Ignore segment registers. */ 395 396 /* Segment bases */ 397 tst->arch.vex.guest_FS_CONST = uc->uc_mcontext.gregs[VKI_REG_FSBASE]; 398 VG_TRACK(copy_mem_to_reg, part, tid, 399 (Addr)&uc->uc_mcontext.gregs[VKI_REG_FSBASE], 400 offsetof(VexGuestAMD64State, guest_FS_CONST), sizeof(UWord)); 401 402 /* Rflags. Refer to the x86-solaris variant of this code for a detailed 403 description. */ 404 { 405 ULong rflags; 406 ULong orig_rflags; 407 ULong new_rflags; 408 Bool ok_restore = False; 409 410 VG_TRACK(pre_mem_read, part, tid, 411 "restore_machine_context(uc->uc_mcontext.gregs[VKI_REG_RFL])", 412 (Addr)&uc->uc_mcontext.gregs[VKI_REG_RFL], sizeof(UWord)); 413 rflags = uc->uc_mcontext.gregs[VKI_REG_RFL]; 414 orig_rflags = LibVEX_GuestAMD64_get_rflags(&tst->arch.vex); 415 new_rflags = rflags; 416 /* The kernel disallows the ID flag to be changed via the setcontext 417 call, thus do the same. */ 418 if (orig_rflags & VKI_RFLAGS_ID_BIT) 419 new_rflags |= VKI_RFLAGS_ID_BIT; 420 else 421 new_rflags &= ~VKI_RFLAGS_ID_BIT; 422 LibVEX_GuestAMD64_put_rflags(new_rflags, &tst->arch.vex); 423 VG_TRACK(post_reg_write, part, tid, 424 offsetof(VexGuestAMD64State, guest_CC_DEP1), sizeof(UWord)); 425 VG_TRACK(post_reg_write, part, tid, 426 offsetof(VexGuestAMD64State, guest_CC_DEP2), sizeof(UWord)); 427 428 if (rflags != ~VKI_UC_GUEST_RFLAGS_NEG(uc)) { 429 VG_(debugLog)(1, "syswrap-solaris", 430 "The rflags value was restored from an " 431 "explicitly set value in thread %u.\n", tid); 432 ok_restore = True; 433 } 434 else { 435 ULong buf[5]; 436 ULong checksum; 437 438 buf[0] = VKI_UC_GUEST_CC_OP(uc); 439 buf[1] = VKI_UC_GUEST_CC_NDEP(uc); 440 buf[2] = VKI_UC_GUEST_CC_DEP1(uc); 441 buf[3] = VKI_UC_GUEST_CC_DEP2(uc); 442 buf[4] = rflags; 443 checksum = ML_(fletcher64)((UInt*)&buf, 444 sizeof(buf) / sizeof(UInt)); 445 if (checksum == VKI_UC_GUEST_RFLAGS_CHECKSUM(uc)) { 446 /* Check ok, the full restoration is possible. */ 447 VG_(debugLog)(1, "syswrap-solaris", 448 "The CC_* guest state values were fully " 449 "restored in thread %u.\n", tid); 450 ok_restore = True; 451 452 tst->arch.vex.guest_CC_OP = VKI_UC_GUEST_CC_OP(uc); 453 tst->arch.vex.guest_CC_NDEP = VKI_UC_GUEST_CC_NDEP(uc); 454 tst->arch.vex.guest_CC_DEP1 = VKI_UC_GUEST_CC_DEP1(uc); 455 VG_TRACK(copy_mem_to_reg, part, tid, 456 (Addr)&VKI_UC_GUEST_CC_DEP1(uc), 457 offsetof(VexGuestAMD64State, guest_CC_DEP1), 458 sizeof(UWord)); 459 tst->arch.vex.guest_CC_DEP2 = VKI_UC_GUEST_CC_DEP2(uc); 460 VG_TRACK(copy_mem_to_reg, part, tid, 461 (Addr)&VKI_UC_GUEST_CC_DEP2(uc), 462 offsetof(VexGuestAMD64State, guest_CC_DEP2), 463 sizeof(UWord)); 464 } 465 } 466 467 if (!ok_restore) 468 VG_(debugLog)(1, "syswrap-solaris", 469 "Cannot fully restore the CC_* guest state " 470 "values, using approximate rflags in thread " 471 "%u.\n", tid); 472 } 473 } 474 475 if (uc->uc_flags & VKI_UC_FPU) { 476 /* FPU */ 477 VexEmNote note; 478 SizeT i; 479 480 /* x87 */ 481 /* Control word */ 482 VG_TRACK(pre_mem_read, part, tid, 483 "restore_machine_context(uc->uc_mcontext.fpregs..cw)", 484 (Addr)&fs->cw, sizeof(fs->cw)); 485 /* Status word */ 486 VG_TRACK(pre_mem_read, part, tid, 487 "restore_machine_context(uc->uc_mcontext.fpregs..sw)", 488 (Addr)&fs->sw, sizeof(fs->sw)); 489 /* Compressed tag word */ 490 VG_TRACK(pre_mem_read, part, tid, 491 "restore_machine_context(uc->uc_mcontext.fpregs..fctw)", 492 (Addr)&fs->fctw, sizeof(fs->fctw)); 493 /* Last x87 opcode */ 494 VG_TRACK(pre_mem_read, part, tid, 495 "restore_machine_context(uc->uc_mcontext.fpregs..fop)", 496 (Addr)&fs->fop, sizeof(fs->fop)); 497 /* Last x87 instruction pointer */ 498 VG_TRACK(pre_mem_read, part, tid, 499 "restore_machine_context(uc->uc_mcontext.fpregs..rip)", 500 (Addr)&fs->rip, sizeof(fs->rip)); 501 /* Last x87 data pointer */ 502 VG_TRACK(pre_mem_read, part, tid, 503 "restore_machine_context(uc->uc_mcontext.fpregs..rdp)", 504 (Addr)&fs->rdp, sizeof(fs->rdp)); 505 /* Media-instruction control and status register */ 506 VG_TRACK(pre_mem_read, part, tid, 507 "restore_machine_context(uc->uc_mcontext.fpregs..mxcsr)", 508 (Addr)&fs->mxcsr, sizeof(fs->mxcsr)); 509 /* Supported features in MXCSR */ 510 VG_TRACK(pre_mem_read, part, tid, 511 "restore_machine_context(uc->uc_mcontext.fpregs..mxcsr_mask)", 512 (Addr)&fs->mxcsr_mask, sizeof(fs->mxcsr_mask)); 513 514 /* ST registers */ 515 for (i = 0; i < 8; i++) { 516 Addr addr = (Addr)&fs->st[i]; 517 VG_TRACK(copy_mem_to_reg, part, tid, addr, 518 offsetof(VexGuestAMD64State, guest_FPREG[i]), sizeof(ULong)); 519 } 520 521 /* XMM registers */ 522 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[0], 523 offsetof(VexGuestAMD64State, guest_YMM0), sizeof(U128)); 524 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[1], 525 offsetof(VexGuestAMD64State, guest_YMM1), sizeof(U128)); 526 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[2], 527 offsetof(VexGuestAMD64State, guest_YMM2), sizeof(U128)); 528 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[3], 529 offsetof(VexGuestAMD64State, guest_YMM3), sizeof(U128)); 530 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[4], 531 offsetof(VexGuestAMD64State, guest_YMM4), sizeof(U128)); 532 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[5], 533 offsetof(VexGuestAMD64State, guest_YMM5), sizeof(U128)); 534 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[6], 535 offsetof(VexGuestAMD64State, guest_YMM6), sizeof(U128)); 536 VG_TRACK(copy_mem_to_reg, part, tid, (Addr)&fs->xmm[7], 537 offsetof(VexGuestAMD64State, guest_YMM7), sizeof(U128)); 538 539 note = LibVEX_GuestAMD64_fxrstor((HWord)fs, &tst->arch.vex); 540 if (note != EmNote_NONE) 541 VG_(message)(Vg_UserMsg, 542 "Error restoring FP state in thread %u: %s.\n", 543 tid, LibVEX_EmNote_string(note)); 544 } 545 } 546 547 548 /* --------------------------------------------------------------------- 549 PRE/POST wrappers for AMD64/Solaris-specific syscalls 550 ------------------------------------------------------------------ */ 551 552 #define PRE(name) DEFN_PRE_TEMPLATE(amd64_solaris, name) 553 #define POST(name) DEFN_POST_TEMPLATE(amd64_solaris, name) 554 555 /* implementation */ 556 557 #undef PRE 558 #undef POST 559 560 #endif // defined(VGP_amd64_solaris) 561 562 /*--------------------------------------------------------------------*/ 563 /*--- end ---*/ 564 /*--------------------------------------------------------------------*/ 565
