/* * Debugger x86_64 specific functions * * Copyright 2004 Vincent Béron * Copyright 2009 Eric Pouech * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #define NONAMELESSSTRUCT #define NONAMELESSUNION #include "debugger.h" #include "wine/debug.h" #if defined(__x86_64__) WINE_DEFAULT_DEBUG_CHANNEL(winedbg); #define STEP_FLAG 0x00000100 /* single step flag */ static BOOL be_x86_64_get_addr(HANDLE hThread, const dbg_ctx_t *ctx, enum be_cpu_addr bca, ADDRESS64* addr) { addr->Mode = AddrModeFlat; switch (bca) { case be_cpu_addr_pc: addr->Segment = ctx->ctx.SegCs; addr->Offset = ctx->ctx.Rip; return TRUE; case be_cpu_addr_stack: addr->Segment = ctx->ctx.SegSs; addr->Offset = ctx->ctx.Rsp; return TRUE; case be_cpu_addr_frame: addr->Segment = ctx->ctx.SegSs; addr->Offset = ctx->ctx.Rbp; return TRUE; default: addr->Mode = -1; return FALSE; } } static BOOL be_x86_64_get_register_info(int regno, enum be_cpu_addr* kind) { /* this is true when running in 32bit mode... and wrong in 64 :-/ */ switch (regno) { case CV_AMD64_RIP: *kind = be_cpu_addr_pc; return TRUE; case CV_AMD64_EBP: *kind = be_cpu_addr_frame; return TRUE; case CV_AMD64_ESP: *kind = be_cpu_addr_stack; return TRUE; } return FALSE; } static void be_x86_64_single_step(dbg_ctx_t *ctx, BOOL enable) { if (enable) ctx->ctx.EFlags |= STEP_FLAG; else ctx->ctx.EFlags &= ~STEP_FLAG; } static void be_x86_64_print_context(HANDLE hThread, const dbg_ctx_t *pctx, int all_regs) { static const char mxcsr_flags[16][4] = { "IE", "DE", "ZE", "OE", "UE", "PE", "DAZ", "IM", "DM", "ZM", "OM", "UM", "PM", "R-", "R+", "FZ" }; static const char flags[] = "aVR-N--ODITSZ-A-P-C"; const CONTEXT *ctx = &pctx->ctx; char buf[33]; int i; strcpy(buf, flags); for (i = 0; buf[i]; i++) if (buf[i] != '-' && !(ctx->EFlags & (1 << (sizeof(flags) - 2 - i)))) buf[i] = ' '; dbg_printf("Register dump:\n"); dbg_printf(" rip:%016I64x rsp:%016I64x rbp:%016I64x eflags:%08x (%s)\n", ctx->Rip, ctx->Rsp, ctx->Rbp, ctx->EFlags, buf); dbg_printf(" rax:%016I64x rbx:%016I64x rcx:%016I64x rdx:%016I64x\n", ctx->Rax, ctx->Rbx, ctx->Rcx, ctx->Rdx); dbg_printf(" rsi:%016I64x rdi:%016I64x r8:%016I64x r9:%016I64x r10:%016I64x\n", ctx->Rsi, ctx->Rdi, ctx->R8, ctx->R9, ctx->R10 ); dbg_printf(" r11:%016I64x r12:%016I64x r13:%016I64x r14:%016I64x r15:%016I64x\n", ctx->R11, ctx->R12, ctx->R13, ctx->R14, ctx->R15 ); if (!all_regs) return; dbg_printf(" cs:%04x ds:%04x es:%04x fs:%04x gs:%04x ss:%04x\n", ctx->SegCs, ctx->SegDs, ctx->SegEs, ctx->SegFs, ctx->SegGs, ctx->SegSs ); dbg_printf("Debug:\n"); dbg_printf(" dr0:%016I64x dr1:%016I64x dr2:%016I64x dr3:%016I64x\n", ctx->Dr0, ctx->Dr1, ctx->Dr2, ctx->Dr3 ); dbg_printf(" dr6:%016I64x dr7:%016I64x\n", ctx->Dr6, ctx->Dr7 ); dbg_printf("Floating point:\n"); dbg_printf(" flcw:%04x ", LOWORD(ctx->u.FltSave.ControlWord)); dbg_printf(" fltw:%04x ", LOWORD(ctx->u.FltSave.TagWord)); dbg_printf(" flsw:%04x", LOWORD(ctx->u.FltSave.StatusWord)); dbg_printf("(cc:%d%d%d%d", (ctx->u.FltSave.StatusWord & 0x00004000) >> 14, (ctx->u.FltSave.StatusWord & 0x00000400) >> 10, (ctx->u.FltSave.StatusWord & 0x00000200) >> 9, (ctx->u.FltSave.StatusWord & 0x00000100) >> 8); dbg_printf(" top:%01x", (unsigned int) (ctx->u.FltSave.StatusWord & 0x00003800) >> 11); if (ctx->u.FltSave.StatusWord & 0x00000001) /* Invalid Fl OP */ { if (ctx->u.FltSave.StatusWord & 0x00000040) /* Stack Fault */ { if (ctx->u.FltSave.StatusWord & 0x00000200) /* C1 says Overflow */ dbg_printf(" #IE(Stack Overflow)"); else dbg_printf(" #IE(Stack Underflow)"); /* Underflow */ } else dbg_printf(" #IE(Arithmetic error)"); /* Invalid Fl OP */ } if (ctx->u.FltSave.StatusWord & 0x00000002) dbg_printf(" #DE"); /* Denormalised OP */ if (ctx->u.FltSave.StatusWord & 0x00000004) dbg_printf(" #ZE"); /* Zero Divide */ if (ctx->u.FltSave.StatusWord & 0x00000008) dbg_printf(" #OE"); /* Overflow */ if (ctx->u.FltSave.StatusWord & 0x00000010) dbg_printf(" #UE"); /* Underflow */ if (ctx->u.FltSave.StatusWord & 0x00000020) dbg_printf(" #PE"); /* Precision error */ if (ctx->u.FltSave.StatusWord & 0x00000040) if (!(ctx->u.FltSave.StatusWord & 0x00000001)) dbg_printf(" #SE"); /* Stack Fault (don't think this can occur) */ if (ctx->u.FltSave.StatusWord & 0x00000080) dbg_printf(" #ES"); /* Error Summary */ if (ctx->u.FltSave.StatusWord & 0x00008000) dbg_printf(" #FB"); /* FPU Busy */ dbg_printf(")\n"); dbg_printf(" flerr:%04x:%08x fldata:%04x:%08x\n", ctx->u.FltSave.ErrorSelector, ctx->u.FltSave.ErrorOffset, ctx->u.FltSave.DataSelector, ctx->u.FltSave.DataOffset ); for (i = 0; i < 8; i++) { M128A reg = ctx->u.FltSave.FloatRegisters[i]; if (i == 4) dbg_printf("\n"); dbg_printf(" ST%u:%016I64x%16I64x ", i, reg.High, reg.Low ); } dbg_printf("\n"); dbg_printf(" mxcsr: %04x (", ctx->u.FltSave.MxCsr ); for (i = 0; i < 16; i++) if (ctx->u.FltSave.MxCsr & (1 << i)) dbg_printf( " %s", mxcsr_flags[i] ); dbg_printf(" )\n"); for (i = 0; i < 16; i++) { dbg_printf( " %sxmm%u: uint=%016I64x%016I64x", (i > 9) ? "" : " ", i, ctx->u.FltSave.XmmRegisters[i].High, ctx->u.FltSave.XmmRegisters[i].Low ); dbg_printf( " double={%g; %g}", *(double *)&ctx->u.FltSave.XmmRegisters[i].Low, *(double *)&ctx->u.FltSave.XmmRegisters[i].High ); dbg_printf( " float={%g; %g; %g; %g}\n", (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 0), (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 1), (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 2), (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 3) ); } } static void be_x86_64_print_segment_info(HANDLE hThread, const dbg_ctx_t *ctx) { } static struct dbg_internal_var be_x86_64_ctx[] = { {CV_AMD64_AL, "AL", (void*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_char_int}, {CV_AMD64_BL, "BL", (void*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_char_int}, {CV_AMD64_CL, "CL", (void*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_char_int}, {CV_AMD64_DL, "DL", (void*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_char_int}, {CV_AMD64_AH, "AH", (void*)(FIELD_OFFSET(CONTEXT, Rax)+1), dbg_itype_unsigned_char_int}, {CV_AMD64_BH, "BH", (void*)(FIELD_OFFSET(CONTEXT, Rbx)+1), dbg_itype_unsigned_char_int}, {CV_AMD64_CH, "CH", (void*)(FIELD_OFFSET(CONTEXT, Rcx)+1), dbg_itype_unsigned_char_int}, {CV_AMD64_DH, "DH", (void*)(FIELD_OFFSET(CONTEXT, Rdx)+1), dbg_itype_unsigned_char_int}, {CV_AMD64_AX, "AX", (void*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_short_int}, {CV_AMD64_BX, "BX", (void*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_short_int}, {CV_AMD64_CX, "CX", (void*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_short_int}, {CV_AMD64_DX, "DX", (void*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_short_int}, {CV_AMD64_SP, "SP", (void*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_short_int}, {CV_AMD64_BP, "BP", (void*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_short_int}, {CV_AMD64_SI, "SI", (void*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_short_int}, {CV_AMD64_DI, "DI", (void*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_short_int}, {CV_AMD64_EAX, "EAX", (void*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_int}, {CV_AMD64_EBX, "EBX", (void*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_int}, {CV_AMD64_ECX, "ECX", (void*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_int}, {CV_AMD64_EDX, "EDX", (void*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_int}, {CV_AMD64_ESP, "ESP", (void*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_int}, {CV_AMD64_EBP, "EBP", (void*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_int}, {CV_AMD64_ESI, "ESI", (void*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_int}, {CV_AMD64_EDI, "EDI", (void*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_int}, {CV_AMD64_ES, "ES", (void*)FIELD_OFFSET(CONTEXT, SegEs), dbg_itype_unsigned_short_int}, {CV_AMD64_CS, "CS", (void*)FIELD_OFFSET(CONTEXT, SegCs), dbg_itype_unsigned_short_int}, {CV_AMD64_SS, "SS", (void*)FIELD_OFFSET(CONTEXT, SegSs), dbg_itype_unsigned_short_int}, {CV_AMD64_DS, "DS", (void*)FIELD_OFFSET(CONTEXT, SegDs), dbg_itype_unsigned_short_int}, {CV_AMD64_FS, "FS", (void*)FIELD_OFFSET(CONTEXT, SegFs), dbg_itype_unsigned_short_int}, {CV_AMD64_GS, "GS", (void*)FIELD_OFFSET(CONTEXT, SegGs), dbg_itype_unsigned_short_int}, {CV_AMD64_FLAGS, "FLAGS", (void*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_short_int}, {CV_AMD64_EFLAGS, "EFLAGS", (void*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_int}, {CV_AMD64_RIP, "RIP", (void*)FIELD_OFFSET(CONTEXT, Rip), dbg_itype_unsigned_long_int}, {CV_AMD64_RAX, "RAX", (void*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_long_int}, {CV_AMD64_RBX, "RBX", (void*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_long_int}, {CV_AMD64_RCX, "RCX", (void*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_long_int}, {CV_AMD64_RDX, "RDX", (void*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_long_int}, {CV_AMD64_RSP, "RSP", (void*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_long_int}, {CV_AMD64_RBP, "RBP", (void*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_long_int}, {CV_AMD64_RSI, "RSI", (void*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_long_int}, {CV_AMD64_RDI, "RDI", (void*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_long_int}, {CV_AMD64_R8, "R8", (void*)FIELD_OFFSET(CONTEXT, R8), dbg_itype_unsigned_long_int}, {CV_AMD64_R9, "R9", (void*)FIELD_OFFSET(CONTEXT, R9), dbg_itype_unsigned_long_int}, {CV_AMD64_R10, "R10", (void*)FIELD_OFFSET(CONTEXT, R10), dbg_itype_unsigned_long_int}, {CV_AMD64_R11, "R11", (void*)FIELD_OFFSET(CONTEXT, R11), dbg_itype_unsigned_long_int}, {CV_AMD64_R12, "R12", (void*)FIELD_OFFSET(CONTEXT, R12), dbg_itype_unsigned_long_int}, {CV_AMD64_R13, "R13", (void*)FIELD_OFFSET(CONTEXT, R13), dbg_itype_unsigned_long_int}, {CV_AMD64_R14, "R14", (void*)FIELD_OFFSET(CONTEXT, R14), dbg_itype_unsigned_long_int}, {CV_AMD64_R15, "R15", (void*)FIELD_OFFSET(CONTEXT, R15), dbg_itype_unsigned_long_int}, {CV_AMD64_ST0, "ST0", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[0]), dbg_itype_long_real}, {CV_AMD64_ST0+1, "ST1", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[1]), dbg_itype_long_real}, {CV_AMD64_ST0+2, "ST2", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[2]), dbg_itype_long_real}, {CV_AMD64_ST0+3, "ST3", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[3]), dbg_itype_long_real}, {CV_AMD64_ST0+4, "ST4", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[4]), dbg_itype_long_real}, {CV_AMD64_ST0+5, "ST5", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[5]), dbg_itype_long_real}, {CV_AMD64_ST0+6, "ST6", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[6]), dbg_itype_long_real}, {CV_AMD64_ST0+7, "ST7", (void*)FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[7]), dbg_itype_long_real}, {CV_AMD64_XMM0, "XMM0", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm0), dbg_itype_m128a}, {CV_AMD64_XMM0+1, "XMM1", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm1), dbg_itype_m128a}, {CV_AMD64_XMM0+2, "XMM2", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm2), dbg_itype_m128a}, {CV_AMD64_XMM0+3, "XMM3", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm3), dbg_itype_m128a}, {CV_AMD64_XMM0+4, "XMM4", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm4), dbg_itype_m128a}, {CV_AMD64_XMM0+5, "XMM5", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm5), dbg_itype_m128a}, {CV_AMD64_XMM0+6, "XMM6", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm6), dbg_itype_m128a}, {CV_AMD64_XMM0+7, "XMM7", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm7), dbg_itype_m128a}, {CV_AMD64_XMM8, "XMM8", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm8), dbg_itype_m128a}, {CV_AMD64_XMM8+1, "XMM9", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm9), dbg_itype_m128a}, {CV_AMD64_XMM8+2, "XMM10", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm10), dbg_itype_m128a}, {CV_AMD64_XMM8+3, "XMM11", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm11), dbg_itype_m128a}, {CV_AMD64_XMM8+4, "XMM12", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm12), dbg_itype_m128a}, {CV_AMD64_XMM8+5, "XMM13", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm13), dbg_itype_m128a}, {CV_AMD64_XMM8+6, "XMM14", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm14), dbg_itype_m128a}, {CV_AMD64_XMM8+7, "XMM15", (void*)FIELD_OFFSET(CONTEXT, u.s.Xmm15), dbg_itype_m128a}, {0, NULL, 0, dbg_itype_none} }; #define f_mod(b) ((b)>>6) #define f_reg(b) (((b)>>3)&0x7) #define f_rm(b) ((b)&0x7) #define f_sib_b(b) ((b)&0x7) #define f_sib_i(b) (((b)>>3)&0x7) #define f_sib_s(b) ((b)>>6) static BOOL be_x86_64_is_step_over_insn(const void* insn) { BYTE ch; for (;;) { if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE; switch (ch) { /* Skip all prefixes */ case 0x2e: /* cs: */ case 0x36: /* ss: */ case 0x3e: /* ds: */ case 0x26: /* es: */ case 0x64: /* fs: */ case 0x65: /* gs: */ case 0x66: /* opcode size prefix */ case 0x67: /* addr size prefix */ case 0xf0: /* lock */ case 0xf2: /* repne */ case 0xf3: /* repe */ insn = (const char*)insn + 1; continue; /* Handle call instructions */ case 0xcd: /* int */ case 0xe8: /* call */ case 0x9a: /* lcall : */ return TRUE; case 0xff: /* call */ if (!dbg_read_memory((const char*)insn + 1, &ch, sizeof(ch))) return FALSE; return (((ch & 0x38) == 0x10) || ((ch & 0x38) == 0x18)); /* Handle string instructions */ case 0x6c: /* insb */ case 0x6d: /* insw */ case 0x6e: /* outsb */ case 0x6f: /* outsw */ case 0xa4: /* movsb */ case 0xa5: /* movsw */ case 0xa6: /* cmpsb */ case 0xa7: /* cmpsw */ case 0xaa: /* stosb */ case 0xab: /* stosw */ case 0xac: /* lodsb */ case 0xad: /* lodsw */ case 0xae: /* scasb */ case 0xaf: /* scasw */ return TRUE; default: return FALSE; } } } static BOOL be_x86_64_is_function_return(const void* insn) { BYTE c; /* sigh... amd64 for prefetch optimization requires 'rep ret' in some cases */ if (!dbg_read_memory(insn, &c, sizeof(c))) return FALSE; if (c == 0xF3) /* REP */ { insn = (const char*)insn + 1; if (!dbg_read_memory(insn, &c, sizeof(c))) return FALSE; } return c == 0xC2 /* ret */ || c == 0xC3 /* ret NN */; } static BOOL be_x86_64_is_break_insn(const void* insn) { BYTE c; return dbg_read_memory(insn, &c, sizeof(c)) && c == 0xCC; } static BOOL fetch_value(const char* addr, unsigned sz, int* value) { char value8; short value16; switch (sz) { case 1: if (!dbg_read_memory(addr, &value8, sizeof(value8))) return FALSE; *value = value8; break; case 2: if (!dbg_read_memory(addr, &value16, sizeof(value16))) return FALSE; *value = value16; case 4: if (!dbg_read_memory(addr, value, sizeof(*value))) return FALSE; break; default: return FALSE; } return TRUE; } static BOOL add_fixed_displacement(const void* insn, BYTE mod, DWORD64* addr) { LONG delta = 0; if (mod == 1) { if (!fetch_value(insn, 1, &delta)) return FALSE; } else if (mod == 2) { if (!fetch_value(insn, sizeof(delta), &delta)) return FALSE; } *addr += delta; return TRUE; } static BOOL evaluate_sib_address(const void* insn, BYTE mod, DWORD64* addr) { BYTE ch; BYTE scale; DWORD64 loc; if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE; switch (f_sib_b(ch)) { case 0x00: loc = dbg_context.ctx.Rax; break; case 0x01: loc = dbg_context.ctx.Rcx; break; case 0x02: loc = dbg_context.ctx.Rdx; break; case 0x03: loc = dbg_context.ctx.Rbx; break; case 0x04: loc = dbg_context.ctx.Rsp; break; case 0x05: loc = dbg_context.ctx.Rbp; if (mod == 0) { loc = 0; mod = 2; } break; case 0x06: loc = dbg_context.ctx.Rsi; break; case 0x07: loc = dbg_context.ctx.Rdi; break; } scale = f_sib_s(ch); switch (f_sib_i(ch)) { case 0x00: loc += dbg_context.ctx.Rax << scale; break; case 0x01: loc += dbg_context.ctx.Rcx << scale; break; case 0x02: loc += dbg_context.ctx.Rdx << scale; break; case 0x03: loc += dbg_context.ctx.Rbx << scale; break; case 0x04: break; case 0x05: loc += dbg_context.ctx.Rbp << scale; break; case 0x06: loc += dbg_context.ctx.Rsi << scale; break; case 0x07: loc += dbg_context.ctx.Rdi << scale; break; } if (!add_fixed_displacement((const char*)insn + 1, mod, &loc)) return FALSE; *addr = loc; return TRUE; } static BOOL load_indirect_target(DWORD64* dst) { ADDRESS64 addr; addr.Mode = AddrModeFlat; addr.Segment = dbg_context.ctx.SegDs; addr.Offset = *dst; return dbg_read_memory(memory_to_linear_addr(&addr), &dst, sizeof(dst)); } static BOOL be_x86_64_is_func_call(const void* insn, ADDRESS64* callee) { BYTE ch; LONG delta; unsigned op_size = 32, rex = 0; DWORD64 dst; /* we assume 64bit mode all over the place */ for (;;) { if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE; if (ch == 0x66) op_size = 16; else if (ch == 0x67) WINE_FIXME("prefix not supported %x\n", ch); else if (ch >= 0x40 && ch <= 0x4f) rex = ch & 0xf; else break; insn = (const char*)insn + 1; } while (0); /* that's the only mode we support anyway */ callee->Mode = AddrModeFlat; callee->Segment = dbg_context.ctx.SegCs; switch (ch) { case 0xe8: /* relative near call */ assert(op_size == 32); if (!fetch_value((const char*)insn + 1, sizeof(delta), &delta)) return FALSE; callee->Offset = (DWORD_PTR)insn + 1 + 4 + delta; return TRUE; case 0xff: if (!dbg_read_memory((const char*)insn + 1, &ch, sizeof(ch))) return FALSE; WINE_TRACE("Got 0xFF %x (&C7=%x) with rex=%x\n", ch, ch & 0xC7, rex); /* keep only the CALL and LCALL insn:s */ switch (f_reg(ch)) { case 0x02: break; default: return FALSE; } if (rex == 0) switch (ch & 0xC7) /* keep Mod R/M only (skip reg) */ { case 0x04: case 0x44: case 0x84: { evaluate_sib_address((const char*)insn + 2, f_mod(ch), &dst); if (!load_indirect_target(&dst)) return FALSE; callee->Offset = dst; return TRUE; } case 0x05: /* addr32 */ if (f_reg(ch) == 0x2) { /* rip-relative to next insn */ if (!dbg_read_memory((const char*)insn + 2, &delta, sizeof(delta)) || !dbg_read_memory((const char*)insn + 6 + delta, &dst, sizeof(dst))) return FALSE; callee->Offset = dst; return TRUE; } WINE_FIXME("Unsupported yet call insn (0xFF 0x%02x) at %p\n", ch, insn); return FALSE; default: switch (f_rm(ch)) { case 0x00: dst = dbg_context.ctx.Rax; break; case 0x01: dst = dbg_context.ctx.Rcx; break; case 0x02: dst = dbg_context.ctx.Rdx; break; case 0x03: dst = dbg_context.ctx.Rbx; break; case 0x04: dst = dbg_context.ctx.Rsp; break; case 0x05: dst = dbg_context.ctx.Rbp; break; case 0x06: dst = dbg_context.ctx.Rsi; break; case 0x07: dst = dbg_context.ctx.Rdi; break; } if (f_mod(ch) != 0x03) { if (!add_fixed_displacement((const char*)insn + 2, f_mod(ch), &dst)) return FALSE; if (!load_indirect_target(&dst)) return FALSE; } callee->Offset = dst; return TRUE; } else WINE_FIXME("Unsupported yet call insn (rex=0x%02x 0xFF 0x%02x) at %p\n", rex, ch, insn); return FALSE; default: return FALSE; } } static BOOL be_x86_64_is_jump(const void* insn, ADDRESS64* jumpee) { return FALSE; } extern void be_x86_64_disasm_one_insn(ADDRESS64* addr, int display); #define DR7_CONTROL_SHIFT 16 #define DR7_CONTROL_SIZE 4 #define DR7_RW_EXECUTE (0x0) #define DR7_RW_WRITE (0x1) #define DR7_RW_READ (0x3) #define DR7_LEN_1 (0x0) #define DR7_LEN_2 (0x4) #define DR7_LEN_4 (0xC) #define DR7_LEN_8 (0x8) #define DR7_LOCAL_ENABLE_SHIFT 0 #define DR7_GLOBAL_ENABLE_SHIFT 1 #define DR7_ENABLE_SIZE 2 #define DR7_LOCAL_ENABLE_MASK (0x55) #define DR7_GLOBAL_ENABLE_MASK (0xAA) #define DR7_CONTROL_RESERVED (0xFC00) #define DR7_LOCAL_SLOWDOWN (0x100) #define DR7_GLOBAL_SLOWDOWN (0x200) #define DR7_ENABLE_MASK(dr) (1<<(DR7_LOCAL_ENABLE_SHIFT+DR7_ENABLE_SIZE*(dr))) #define IS_DR7_SET(ctrl,dr) ((ctrl)&DR7_ENABLE_MASK(dr)) static inline int be_x86_64_get_unused_DR(dbg_ctx_t *pctx, DWORD64** r) { CONTEXT *ctx = &pctx->ctx; if (!IS_DR7_SET(ctx->Dr7, 0)) { *r = &ctx->Dr0; return 0; } if (!IS_DR7_SET(ctx->Dr7, 1)) { *r = &ctx->Dr1; return 1; } if (!IS_DR7_SET(ctx->Dr7, 2)) { *r = &ctx->Dr2; return 2; } if (!IS_DR7_SET(ctx->Dr7, 3)) { *r = &ctx->Dr3; return 3; } dbg_printf("All hardware registers have been used\n"); return -1; } static BOOL be_x86_64_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio, dbg_ctx_t *ctx, enum be_xpoint_type type, void* addr, unsigned *val, unsigned size) { unsigned char ch; SIZE_T sz; DWORD64 *pr; int reg; unsigned int bits; switch (type) { case be_xpoint_break: if (size != 0) return FALSE; if (!pio->read(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE; *val = ch; ch = 0xcc; if (!pio->write(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE; break; case be_xpoint_watch_exec: bits = DR7_RW_EXECUTE; goto hw_bp; case be_xpoint_watch_read: bits = DR7_RW_READ; goto hw_bp; case be_xpoint_watch_write: bits = DR7_RW_WRITE; hw_bp: if ((reg = be_x86_64_get_unused_DR(ctx, &pr)) == -1) return FALSE; *pr = (DWORD64)addr; if (type != be_xpoint_watch_exec) switch (size) { case 8: bits |= DR7_LEN_8; break; case 4: bits |= DR7_LEN_4; break; case 2: bits |= DR7_LEN_2; break; case 1: bits |= DR7_LEN_1; break; default: WINE_FIXME("Unsupported xpoint_watch of size %d\n", size); return FALSE; } *val = reg; /* clear old values */ ctx->ctx.Dr7 &= ~(0x0F << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg)); /* set the correct ones */ ctx->ctx.Dr7 |= bits << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg); ctx->ctx.Dr7 |= DR7_ENABLE_MASK(reg) | DR7_LOCAL_SLOWDOWN; break; default: dbg_printf("Unknown bp type %c\n", type); return FALSE; } return TRUE; } static BOOL be_x86_64_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio, dbg_ctx_t *ctx, enum be_xpoint_type type, void* addr, unsigned val, unsigned size) { SIZE_T sz; unsigned char ch; switch (type) { case be_xpoint_break: if (size != 0) return FALSE; if (!pio->read(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE; if (ch != (unsigned char)0xCC) WINE_FIXME("Cannot get back %02x instead of 0xCC at %p\n", ch, addr); ch = (unsigned char)val; if (!pio->write(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE; break; case be_xpoint_watch_exec: case be_xpoint_watch_read: case be_xpoint_watch_write: /* simply disable the entry */ ctx->ctx.Dr7 &= ~DR7_ENABLE_MASK(val); break; default: dbg_printf("Unknown bp type %c\n", type); return FALSE; } return TRUE; } static BOOL be_x86_64_is_watchpoint_set(const dbg_ctx_t *ctx, unsigned idx) { return ctx->ctx.Dr6 & (1 << idx); } static void be_x86_64_clear_watchpoint(dbg_ctx_t *ctx, unsigned idx) { ctx->ctx.Dr6 &= ~(1 << idx); } static int be_x86_64_adjust_pc_for_break(dbg_ctx_t *ctx, BOOL way) { if (way) { ctx->ctx.Rip--; return -1; } ctx->ctx.Rip++; return 1; } static BOOL be_x86_64_get_context(HANDLE thread, dbg_ctx_t *ctx) { ctx->ctx.ContextFlags = CONTEXT_ALL; return GetThreadContext(thread, &ctx->ctx); } static BOOL be_x86_64_set_context(HANDLE thread, const dbg_ctx_t *ctx) { return SetThreadContext(thread, &ctx->ctx); } #define REG(f,n,t,r) {f, n, t, FIELD_OFFSET(CONTEXT, r), sizeof(((CONTEXT*)NULL)->r)} static struct gdb_register be_x86_64_gdb_register_map[] = { REG("core", "rax", NULL, Rax), REG(NULL, "rbx", NULL, Rbx), REG(NULL, "rcx", NULL, Rcx), REG(NULL, "rdx", NULL, Rdx), REG(NULL, "rsi", NULL, Rsi), REG(NULL, "rdi", NULL, Rdi), REG(NULL, "rbp", "data_ptr", Rbp), REG(NULL, "rsp", "data_ptr", Rsp), REG(NULL, "r8", NULL, R8), REG(NULL, "r9", NULL, R9), REG(NULL, "r10", NULL, R10), REG(NULL, "r11", NULL, R11), REG(NULL, "r12", NULL, R12), REG(NULL, "r13", NULL, R13), REG(NULL, "r14", NULL, R14), REG(NULL, "r15", NULL, R15), REG(NULL, "rip", "code_ptr", Rip), REG(NULL, "eflags", "i386_eflags", EFlags), REG(NULL, "cs", NULL, SegCs), REG(NULL, "ss", NULL, SegSs), REG(NULL, "ds", NULL, SegDs), REG(NULL, "es", NULL, SegEs), REG(NULL, "fs", NULL, SegFs), REG(NULL, "gs", NULL, SegGs), { NULL, "st0", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 0]), 10}, { NULL, "st1", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 1]), 10}, { NULL, "st2", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 2]), 10}, { NULL, "st3", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 3]), 10}, { NULL, "st4", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 4]), 10}, { NULL, "st5", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 5]), 10}, { NULL, "st6", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 6]), 10}, { NULL, "st7", "i387_ext", FIELD_OFFSET(CONTEXT, u.FltSave.FloatRegisters[ 7]), 10}, REG(NULL, "fctrl", NULL, u.FltSave.ControlWord), REG(NULL, "fstat", NULL, u.FltSave.StatusWord), REG(NULL, "ftag", NULL, u.FltSave.TagWord), REG(NULL, "fiseg", NULL, u.FltSave.ErrorSelector), REG(NULL, "fioff", NULL, u.FltSave.ErrorOffset), REG(NULL, "foseg", NULL, u.FltSave.DataSelector), REG(NULL, "fooff", NULL, u.FltSave.DataOffset), REG(NULL, "fop", NULL, u.FltSave.ErrorOpcode), REG("sse", "xmm0", "vec128", u.s.Xmm0), REG(NULL, "xmm1", "vec128", u.s.Xmm1), REG(NULL, "xmm2", "vec128", u.s.Xmm2), REG(NULL, "xmm3", "vec128", u.s.Xmm3), REG(NULL, "xmm4", "vec128", u.s.Xmm4), REG(NULL, "xmm5", "vec128", u.s.Xmm5), REG(NULL, "xmm6", "vec128", u.s.Xmm6), REG(NULL, "xmm7", "vec128", u.s.Xmm7), REG(NULL, "xmm8", "vec128", u.s.Xmm8), REG(NULL, "xmm9", "vec128", u.s.Xmm9), REG(NULL, "xmm10", "vec128", u.s.Xmm10), REG(NULL, "xmm11", "vec128", u.s.Xmm11), REG(NULL, "xmm12", "vec128", u.s.Xmm12), REG(NULL, "xmm13", "vec128", u.s.Xmm13), REG(NULL, "xmm14", "vec128", u.s.Xmm14), REG(NULL, "xmm15", "vec128", u.s.Xmm15), REG(NULL, "mxcsr", "i386_mxcsr", u.FltSave.MxCsr), }; struct backend_cpu be_x86_64 = { IMAGE_FILE_MACHINE_AMD64, 8, be_cpu_linearize, be_cpu_build_addr, be_x86_64_get_addr, be_x86_64_get_register_info, be_x86_64_single_step, be_x86_64_print_context, be_x86_64_print_segment_info, be_x86_64_ctx, be_x86_64_is_step_over_insn, be_x86_64_is_function_return, be_x86_64_is_break_insn, be_x86_64_is_func_call, be_x86_64_is_jump, be_x86_64_disasm_one_insn, be_x86_64_insert_Xpoint, be_x86_64_remove_Xpoint, be_x86_64_is_watchpoint_set, be_x86_64_clear_watchpoint, be_x86_64_adjust_pc_for_break, be_x86_64_get_context, be_x86_64_set_context, be_x86_64_gdb_register_map, ARRAY_SIZE(be_x86_64_gdb_register_map), }; #endif