| /* Low level interface to valgrind, for the remote server for GDB integrated |
| in valgrind. |
| Copyright (C) 2011 |
| Free Software Foundation, Inc. |
| |
| This file is part of VALGRIND. |
| It has been inspired from a file from gdbserver in gdb 6.6. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #include "server.h" |
| #include "target.h" |
| #include "regdef.h" |
| #include "regcache.h" |
| |
| #include "pub_core_aspacemgr.h" |
| #include "pub_core_machine.h" |
| #include "pub_core_threadstate.h" |
| #include "pub_core_transtab.h" |
| #include "pub_core_gdbserver.h" |
| |
| #include "valgrind_low.h" |
| |
| #include "libvex_guest_amd64.h" |
| /* GDBTD: ??? have a cleaner way to get the f80 <> f64 conversion functions */ |
| /* below include needed for conversion f80 <> f64 */ |
| #include "../../VEX/priv/guest_generic_x87.h" |
| |
| /* below loosely inspired from file generated with gdb regdat.sh */ |
| |
| static struct reg regs[] = { |
| { "rax", 0, 64 }, |
| { "rbx", 64, 64 }, |
| { "rcx", 128, 64 }, |
| { "rdx", 192, 64 }, |
| { "rsi", 256, 64 }, |
| { "rdi", 320, 64 }, |
| { "rbp", 384, 64 }, |
| { "rsp", 448, 64 }, |
| { "r8", 512, 64 }, |
| { "r9", 576, 64 }, |
| { "r10", 640, 64 }, |
| { "r11", 704, 64 }, |
| { "r12", 768, 64 }, |
| { "r13", 832, 64 }, |
| { "r14", 896, 64 }, |
| { "r15", 960, 64 }, |
| { "rip", 1024, 64 }, |
| { "eflags", 1088, 32 }, |
| { "cs", 1120, 32 }, |
| { "ss", 1152, 32 }, |
| { "ds", 1184, 32 }, |
| { "es", 1216, 32 }, |
| { "fs", 1248, 32 }, |
| { "gs", 1280, 32 }, |
| { "st0", 1312, 80 }, |
| { "st1", 1392, 80 }, |
| { "st2", 1472, 80 }, |
| { "st3", 1552, 80 }, |
| { "st4", 1632, 80 }, |
| { "st5", 1712, 80 }, |
| { "st6", 1792, 80 }, |
| { "st7", 1872, 80 }, |
| { "fctrl", 1952, 32 }, |
| { "fstat", 1984, 32 }, |
| { "ftag", 2016, 32 }, |
| { "fiseg", 2048, 32 }, |
| { "fioff", 2080, 32 }, |
| { "foseg", 2112, 32 }, |
| { "fooff", 2144, 32 }, |
| { "fop", 2176, 32 }, |
| { "xmm0", 2208, 128 }, |
| { "xmm1", 2336, 128 }, |
| { "xmm2", 2464, 128 }, |
| { "xmm3", 2592, 128 }, |
| { "xmm4", 2720, 128 }, |
| { "xmm5", 2848, 128 }, |
| { "xmm6", 2976, 128 }, |
| { "xmm7", 3104, 128 }, |
| { "xmm8", 3232, 128 }, |
| { "xmm9", 3360, 128 }, |
| { "xmm10", 3488, 128 }, |
| { "xmm11", 3616, 128 }, |
| { "xmm12", 3744, 128 }, |
| { "xmm13", 3872, 128 }, |
| { "xmm14", 4000, 128 }, |
| { "xmm15", 4128, 128 }, |
| { "mxcsr", 4256, 32 }, |
| #if defined(VGO_linux) |
| { "orig_rax", 4288, 64 }, |
| #endif |
| { "ymm0h", 4352, 128 }, // The ymm?h registers only to be given to GDB |
| { "ymm1h", 4480, 128 }, // if Valgrind is running with AVX instructions. |
| { "ymm2h", 4608, 128 }, |
| { "ymm3h", 4736, 128 }, |
| { "ymm4h", 4864, 128 }, |
| { "ymm5h", 4992, 128 }, |
| { "ymm6h", 5120, 128 }, |
| { "ymm7h", 5248, 128 }, |
| { "ymm8h", 5376, 128 }, |
| { "ymm9h", 5504, 128 }, |
| { "ymm10h", 5632, 128 }, |
| { "ymm11h", 5760, 128 }, |
| { "ymm12h", 5888, 128 }, |
| { "ymm13h", 6016, 128 }, |
| { "ymm14h", 6144, 128 }, |
| { "ymm15h", 6272, 128 } |
| }; |
| static const char *expedite_regs[] = { "rbp", "rsp", "rip", 0 }; |
| #define max_num_regs (sizeof (regs) / sizeof (regs[0])) |
| static int dyn_num_regs; // if no AVX, we have to give less registers to gdb. |
| |
| |
| static |
| CORE_ADDR get_pc (void) |
| { |
| unsigned long pc; |
| |
| collect_register_by_name ("rip", &pc); |
| |
| dlog(1, "stop pc is %p\n", (void *) pc); |
| return pc; |
| } |
| |
| static |
| void set_pc (CORE_ADDR newpc) |
| { |
| Bool mod; |
| supply_register_by_name ("rip", &newpc, &mod); |
| if (mod) |
| dlog(1, "set pc to %p\n", C2v (newpc)); |
| else |
| dlog(1, "set pc not changed %p\n", C2v (newpc)); |
| } |
| |
| /* store registers in the guest state (gdbserver_to_valgrind) |
| or fetch register from the guest state (valgrind_to_gdbserver). */ |
| static |
| void transfer_register (ThreadId tid, int abs_regno, void * buf, |
| transfer_direction dir, int size, Bool *mod) |
| { |
| ThreadState* tst = VG_(get_ThreadState)(tid); |
| int set = abs_regno / dyn_num_regs; |
| int regno = abs_regno % dyn_num_regs; |
| *mod = False; |
| |
| VexGuestAMD64State* amd64 = (VexGuestAMD64State*) get_arch (set, tst); |
| |
| switch (regno) { |
| // numbers here have to match the order of regs above. |
| // Attention: gdb order does not match valgrind order. |
| case 0: VG_(transfer) (&amd64->guest_RAX, buf, dir, size, mod); break; |
| case 1: VG_(transfer) (&amd64->guest_RBX, buf, dir, size, mod); break; |
| case 2: VG_(transfer) (&amd64->guest_RCX, buf, dir, size, mod); break; |
| case 3: VG_(transfer) (&amd64->guest_RDX, buf, dir, size, mod); break; |
| case 4: VG_(transfer) (&amd64->guest_RSI, buf, dir, size, mod); break; |
| case 5: VG_(transfer) (&amd64->guest_RDI, buf, dir, size, mod); break; |
| case 6: VG_(transfer) (&amd64->guest_RBP, buf, dir, size, mod); break; |
| case 7: VG_(transfer) (&amd64->guest_RSP, buf, dir, size, mod); break; |
| case 8: VG_(transfer) (&amd64->guest_R8, buf, dir, size, mod); break; |
| case 9: VG_(transfer) (&amd64->guest_R9, buf, dir, size, mod); break; |
| case 10: VG_(transfer) (&amd64->guest_R10, buf, dir, size, mod); break; |
| case 11: VG_(transfer) (&amd64->guest_R11, buf, dir, size, mod); break; |
| case 12: VG_(transfer) (&amd64->guest_R12, buf, dir, size, mod); break; |
| case 13: VG_(transfer) (&amd64->guest_R13, buf, dir, size, mod); break; |
| case 14: VG_(transfer) (&amd64->guest_R14, buf, dir, size, mod); break; |
| case 15: VG_(transfer) (&amd64->guest_R15, buf, dir, size, mod); break; |
| case 16: VG_(transfer) (&amd64->guest_RIP, buf, dir, size, mod); break; |
| case 17: |
| if (dir == valgrind_to_gdbserver) { |
| ULong rflags; |
| /* we can only retrieve the real flags (set 0) |
| retrieving shadow flags is not ok */ |
| if (set == 0) |
| rflags = LibVEX_GuestAMD64_get_rflags (amd64); |
| else |
| rflags = 0; |
| VG_(transfer) (&rflags, buf, dir, size, mod); |
| } else { |
| *mod = False; //GDBTD? how do we store rflags in libvex_guest_amd64.h ??? |
| } |
| break; |
| case 18: *mod = False; break; //GDBTD VG_(transfer) (&amd64->guest_CS, buf, dir, size, mod); |
| case 19: *mod = False; break; //GDBTD VG_(transfer) (&amd64->guest_SS, buf, dir, size, mod); |
| case 20: *mod = False; break; //GDBTD VG_(transfer) (&amd64->guest_DS, buf, dir, size, mod); |
| case 21: *mod = False; break; //GDBTD VG_(transfer) (&amd64->guest_ES, buf, dir, size, mod); |
| case 22: *mod = False; break; //GDBTD VG_(transfer) (&amd64->guest_FS, buf, dir, size, mod); |
| case 23: VG_(transfer) (&amd64->guest_GS_0x60, buf, dir, size, mod); break; |
| case 24: |
| case 25: |
| case 26: |
| case 27: /* register 24 to 31 are float registers 80 bits but 64 bits in valgrind */ |
| case 28: |
| case 29: |
| case 30: |
| case 31: |
| if (dir == valgrind_to_gdbserver) { |
| UChar fpreg80[10]; |
| convert_f64le_to_f80le ((UChar *)&amd64->guest_FPREG[regno-16], |
| fpreg80); |
| VG_(transfer) (&fpreg80, buf, dir, sizeof(fpreg80), mod); |
| } else { |
| ULong fpreg64; |
| convert_f80le_to_f64le (buf, (UChar *)&fpreg64); |
| VG_(transfer) (&amd64->guest_FPREG[regno-16], &fpreg64, |
| dir, sizeof(fpreg64), mod); |
| } |
| break; |
| case 32: |
| if (dir == valgrind_to_gdbserver) { |
| // vex only models the rounding bits (see libvex_guest_amd64.h) |
| UWord value = 0x037f; |
| value |= amd64->guest_FPROUND << 10; |
| VG_(transfer)(&value, buf, dir, size, mod); |
| } else { |
| *mod = False; // GDBTD???? VEX equivalent fcrtl |
| } |
| break; |
| case 33: |
| if (dir == valgrind_to_gdbserver) { |
| UWord value = amd64->guest_FC3210; |
| value |= (amd64->guest_FTOP & 7) << 11; |
| VG_(transfer)(&value, buf, dir, size, mod); |
| } else { |
| *mod = False; // GDBTD???? VEX equivalent fstat |
| } |
| break; |
| case 34: |
| if (dir == valgrind_to_gdbserver) { |
| // vex doesn't model these precisely |
| UWord value = |
| ((amd64->guest_FPTAG[0] ? 0 : 3) << 0) | |
| ((amd64->guest_FPTAG[1] ? 0 : 3) << 2) | |
| ((amd64->guest_FPTAG[2] ? 0 : 3) << 4) | |
| ((amd64->guest_FPTAG[3] ? 0 : 3) << 6) | |
| ((amd64->guest_FPTAG[4] ? 0 : 3) << 8) | |
| ((amd64->guest_FPTAG[5] ? 0 : 3) << 10) | |
| ((amd64->guest_FPTAG[6] ? 0 : 3) << 12) | |
| ((amd64->guest_FPTAG[7] ? 0 : 3) << 14); |
| VG_(transfer)(&value, buf, dir, size, mod); |
| } else { |
| *mod = False; // GDBTD???? VEX equivalent ftag |
| } |
| break; |
| case 35: *mod = False; break; // GDBTD ??? equivalent of fiseg |
| case 36: *mod = False; break; // GDBTD ??? equivalent of fioff |
| case 37: *mod = False; break; // GDBTD ??? equivalent of foseg |
| case 38: *mod = False; break; // GDBTD ??? equivalent of fooff |
| case 39: *mod = False; break; // GDBTD ??? equivalent of fop |
| case 40: VG_(transfer) (&amd64->guest_YMM0[0], buf, dir, size, mod); break; |
| case 41: VG_(transfer) (&amd64->guest_YMM1[0], buf, dir, size, mod); break; |
| case 42: VG_(transfer) (&amd64->guest_YMM2[0], buf, dir, size, mod); break; |
| case 43: VG_(transfer) (&amd64->guest_YMM3[0], buf, dir, size, mod); break; |
| case 44: VG_(transfer) (&amd64->guest_YMM4[0], buf, dir, size, mod); break; |
| case 45: VG_(transfer) (&amd64->guest_YMM5[0], buf, dir, size, mod); break; |
| case 46: VG_(transfer) (&amd64->guest_YMM6[0], buf, dir, size, mod); break; |
| case 47: VG_(transfer) (&amd64->guest_YMM7[0], buf, dir, size, mod); break; |
| case 48: VG_(transfer) (&amd64->guest_YMM8[0], buf, dir, size, mod); break; |
| case 49: VG_(transfer) (&amd64->guest_YMM9[0], buf, dir, size, mod); break; |
| case 50: VG_(transfer) (&amd64->guest_YMM10[0], buf, dir, size, mod); break; |
| case 51: VG_(transfer) (&amd64->guest_YMM11[0], buf, dir, size, mod); break; |
| case 52: VG_(transfer) (&amd64->guest_YMM12[0], buf, dir, size, mod); break; |
| case 53: VG_(transfer) (&amd64->guest_YMM13[0], buf, dir, size, mod); break; |
| case 54: VG_(transfer) (&amd64->guest_YMM14[0], buf, dir, size, mod); break; |
| case 55: VG_(transfer) (&amd64->guest_YMM15[0], buf, dir, size, mod); break; |
| case 56: |
| if (dir == valgrind_to_gdbserver) { |
| // vex only models the rounding bits (see libvex_guest_x86.h) |
| UWord value = 0x1f80; |
| value |= amd64->guest_SSEROUND << 13; |
| VG_(transfer)(&value, buf, dir, size, mod); |
| } else { |
| *mod = False; // GDBTD???? VEX equivalent mxcsr |
| } |
| break; |
| case 57: *mod = False; break; // GDBTD???? VEX equivalent { "orig_rax"}, |
| case 58: VG_(transfer) (&amd64->guest_YMM0[4], buf, dir, size, mod); break; |
| case 59: VG_(transfer) (&amd64->guest_YMM1[4], buf, dir, size, mod); break; |
| case 60: VG_(transfer) (&amd64->guest_YMM2[4], buf, dir, size, mod); break; |
| case 61: VG_(transfer) (&amd64->guest_YMM3[4], buf, dir, size, mod); break; |
| case 62: VG_(transfer) (&amd64->guest_YMM4[4], buf, dir, size, mod); break; |
| case 63: VG_(transfer) (&amd64->guest_YMM5[4], buf, dir, size, mod); break; |
| case 64: VG_(transfer) (&amd64->guest_YMM6[4], buf, dir, size, mod); break; |
| case 65: VG_(transfer) (&amd64->guest_YMM7[4], buf, dir, size, mod); break; |
| case 66: VG_(transfer) (&amd64->guest_YMM8[4], buf, dir, size, mod); break; |
| case 67: VG_(transfer) (&amd64->guest_YMM9[4], buf, dir, size, mod); break; |
| case 68: VG_(transfer) (&amd64->guest_YMM10[4], buf, dir, size, mod); break; |
| case 69: VG_(transfer) (&amd64->guest_YMM11[4], buf, dir, size, mod); break; |
| case 70: VG_(transfer) (&amd64->guest_YMM12[4], buf, dir, size, mod); break; |
| case 71: VG_(transfer) (&amd64->guest_YMM13[4], buf, dir, size, mod); break; |
| case 72: VG_(transfer) (&amd64->guest_YMM14[4], buf, dir, size, mod); break; |
| case 73: VG_(transfer) (&amd64->guest_YMM15[4], buf, dir, size, mod); break; |
| default: vg_assert(0); |
| } |
| } |
| |
| static |
| Bool have_avx(void) |
| { |
| VexArch va; |
| VexArchInfo vai; |
| VG_(machine_get_VexArchInfo) (&va, &vai); |
| return (vai.hwcaps & VEX_HWCAPS_AMD64_AVX ? True : False); |
| } |
| static |
| char* target_xml (Bool shadow_mode) |
| { |
| if (shadow_mode) { |
| #if defined(VGO_linux) |
| if (have_avx()) |
| return "amd64-avx-linux-valgrind.xml"; |
| else |
| return "amd64-linux-valgrind.xml"; |
| #else |
| if (have_avx()) |
| return "amd64-avx-coresse-valgrind.xml"; |
| else |
| return "amd64-coresse-valgrind.xml"; |
| #endif |
| } else { |
| #if defined(VGO_linux) |
| if (have_avx()) |
| return "amd64-avx-linux.xml"; |
| else |
| return NULL; |
| #else |
| if (have_avx()) |
| return "amd64-avx-coresse.xml"; |
| else |
| return NULL; |
| #endif |
| } |
| } |
| |
| static struct valgrind_target_ops low_target = { |
| -1, // Must be computed at init time. |
| regs, |
| 7, //RSP |
| transfer_register, |
| get_pc, |
| set_pc, |
| "amd64", |
| target_xml |
| }; |
| |
| void amd64_init_architecture (struct valgrind_target_ops *target) |
| { |
| *target = low_target; |
| if (have_avx()) |
| dyn_num_regs = max_num_regs; |
| else |
| dyn_num_regs = max_num_regs - 16; // remove the AVX "high" registers. |
| target->num_regs = dyn_num_regs; |
| set_register_cache (regs, dyn_num_regs); |
| gdbserver_expedite_regs = expedite_regs; |
| } |