| /* |
| * 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 |
| */ |
| |
| #include "debugger.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(winedbg); |
| |
| #if defined(__x86_64__) |
| |
| #define STEP_FLAG 0x00000100 /* single step flag */ |
| |
| static unsigned be_x86_64_get_addr(HANDLE hThread, const CONTEXT* ctx, |
| enum be_cpu_addr bca, ADDRESS64* addr) |
| { |
| addr->Mode = AddrModeFlat; |
| switch (bca) |
| { |
| case be_cpu_addr_pc: |
| addr->Segment = ctx->SegCs; |
| addr->Offset = ctx->Rip; |
| return TRUE; |
| case be_cpu_addr_stack: |
| addr->Segment = ctx->SegSs; |
| addr->Offset = ctx->Rsp; |
| return TRUE; |
| case be_cpu_addr_frame: |
| addr->Segment = ctx->SegSs; |
| addr->Offset = ctx->Rbp; |
| return TRUE; |
| default: |
| addr->Mode = -1; |
| return FALSE; |
| } |
| } |
| |
| static unsigned 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(CONTEXT* ctx, unsigned enable) |
| { |
| if (enable) ctx->EFlags |= STEP_FLAG; |
| else ctx->EFlags &= ~STEP_FLAG; |
| } |
| |
| static void be_x86_64_print_context(HANDLE hThread, const CONTEXT* ctx, |
| int all_regs) |
| { |
| static const char flags[] = "aVR-N--ODITSZ-A-P-C"; |
| 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:%016lx rsp:%016lx rbp:%016lx eflags:%08x (%s)\n", |
| ctx->Rip, ctx->Rsp, ctx->Rbp, ctx->EFlags, buf); |
| dbg_printf(" rax:%016lx rbx:%016lx rcx:%016lx rdx:%016lx\n", |
| ctx->Rax, ctx->Rbx, ctx->Rcx, ctx->Rdx); |
| dbg_printf(" rsi:%016lx rdi:%016lx r8:%016lx r9:%016lx r10:%016lx\n", |
| ctx->Rsi, ctx->Rdi, ctx->R8, ctx->R9, ctx->R10 ); |
| dbg_printf(" r11:%016lx r12:%016lx r13:%016lx r14:%016lx r15:%016lx\n", |
| ctx->R11, ctx->R12, ctx->R13, ctx->R14, ctx->R15 ); |
| |
| if (all_regs) dbg_printf( "Floating point x86_64 dump not implemented\n" ); |
| } |
| |
| static void be_x86_64_print_segment_info(HANDLE hThread, const CONTEXT* ctx) |
| { |
| } |
| |
| static struct dbg_internal_var be_x86_64_ctx[] = |
| { |
| {CV_AMD64_AL, "AL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_BL, "BL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_CL, "CL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_DL, "DL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_AH, "AH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rax)+1), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_BH, "BH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rbx)+1), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_CH, "CH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rcx)+1), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_DH, "DH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rdx)+1), dbg_itype_unsigned_char_int}, |
| {CV_AMD64_AX, "AX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_BX, "BX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_CX, "CX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_DX, "DX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_SP, "SP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_BP, "BP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_SI, "SI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_DI, "DI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_EAX, "EAX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_int}, |
| {CV_AMD64_EBX, "EBX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_int}, |
| {CV_AMD64_ECX, "ECX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_int}, |
| {CV_AMD64_EDX, "EDX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_int}, |
| {CV_AMD64_ESP, "ESP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_int}, |
| {CV_AMD64_EBP, "EBP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_int}, |
| {CV_AMD64_ESI, "ESI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_int}, |
| {CV_AMD64_EDI, "EDI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_int}, |
| {CV_AMD64_ES, "ES", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegEs), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_CS, "CS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegCs), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_SS, "SS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegSs), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_DS, "DS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegDs), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_FS, "FS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegFs), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_GS, "GS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegGs), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_FLAGS, "FLAGS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_short_int}, |
| {CV_AMD64_EFLAGS, "EFLAGS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_int}, |
| {CV_AMD64_RIP, "RIP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rip), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RAX, "RAX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RBX, "RBX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RCX, "RCX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RDX, "RDX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RSP, "RSP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RBP, "RBP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RSI, "RSI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_RDI, "RDI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R8, "R8", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R8), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R9, "R9", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R9), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R10, "R10", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R10), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R11, "R11", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R11), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R12, "R12", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R12), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R13, "R13", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R13), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R14, "R14", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R14), dbg_itype_unsigned_long_int}, |
| {CV_AMD64_R15, "R15", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R15), dbg_itype_unsigned_long_int}, |
| {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) |
| |
| static unsigned 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 <intno> */ |
| case 0xe8: /* call <offset> */ |
| case 0x9a: /* lcall <seg>:<off> */ |
| return TRUE; |
| |
| case 0xff: /* call <regmodrm> */ |
| 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 unsigned be_x86_64_is_function_return(const void* insn) |
| { |
| BYTE c; |
| return dbg_read_memory(insn, &c, sizeof(c)) && ((c == 0xC2) || (c == 0xC3)); |
| } |
| |
| static unsigned 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 8: |
| if (!dbg_read_memory(addr, &value8, sizeof(value8))) return FALSE; |
| *value = value8; |
| break; |
| case 16: |
| if (!dbg_read_memory(addr, &value16, sizeof(value16))) return FALSE; |
| *value = value16; |
| case 32: |
| if (!dbg_read_memory(addr, value, sizeof(*value))) return FALSE; |
| break; |
| default: return FALSE; |
| } |
| return TRUE; |
| } |
| |
| static unsigned be_x86_64_is_func_call(const void* insn, ADDRESS64* callee) |
| { |
| BYTE ch; |
| LONG delta; |
| short segment; |
| 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.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: |
| segment = dbg_context.SegCs; |
| break; |
| default: return FALSE; |
| } |
| if (rex == 0) switch (ch & 0xC7) /* keep Mod R/M only (skip reg) */ |
| { |
| case 0x04: |
| case 0x44: |
| case 0x84: |
| WINE_FIXME("Unsupported yet call insn (0xFF 0x%02x) (SIB bytes) at %p\n", ch, insn); |
| return FALSE; |
| 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.Rax; break; |
| case 0x01: dst = dbg_context.Rcx; break; |
| case 0x02: dst = dbg_context.Rdx; break; |
| case 0x03: dst = dbg_context.Rbx; break; |
| case 0x04: dst = dbg_context.Rsp; break; |
| case 0x05: dst = dbg_context.Rbp; break; |
| case 0x06: dst = dbg_context.Rsi; break; |
| case 0x07: dst = dbg_context.Rdi; break; |
| } |
| if (f_mod(ch) != 0x03) |
| WINE_FIXME("Unsupported yet call insn (0xFF 0x%02x) at %p\n", ch, insn); |
| else |
| { |
| callee->Offset = dst; |
| } |
| break; |
| } |
| 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 unsigned 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(CONTEXT* ctx, DWORD64** r) |
| { |
| 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 unsigned be_x86_64_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio, |
| CONTEXT* ctx, enum be_xpoint_type type, |
| void* addr, unsigned long* val, unsigned size) |
| { |
| unsigned char ch; |
| SIZE_T sz; |
| DWORD64 *pr; |
| int reg; |
| unsigned long bits; |
| |
| switch (type) |
| { |
| case be_xpoint_break: |
| if (size != 0) return 0; |
| if (!pio->read(hProcess, addr, &ch, 1, &sz) || sz != 1) return 0; |
| *val = ch; |
| ch = 0xcc; |
| if (!pio->write(hProcess, addr, &ch, 1, &sz) || sz != 1) return 0; |
| 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 0; |
| *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 0; |
| } |
| *val = reg; |
| /* clear old values */ |
| ctx->Dr7 &= ~(0x0F << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg)); |
| /* set the correct ones */ |
| ctx->Dr7 |= bits << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg); |
| ctx->Dr7 |= DR7_ENABLE_MASK(reg) | DR7_LOCAL_SLOWDOWN; |
| break; |
| default: |
| dbg_printf("Unknown bp type %c\n", type); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static unsigned be_x86_64_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio, |
| CONTEXT* ctx, enum be_xpoint_type type, |
| void* addr, unsigned long val, unsigned size) |
| { |
| SIZE_T sz; |
| unsigned char ch; |
| |
| switch (type) |
| { |
| case be_xpoint_break: |
| if (size != 0) return 0; |
| if (!pio->read(hProcess, addr, &ch, 1, &sz) || sz != 1) return 0; |
| if (ch != (unsigned char)0xCC) |
| WINE_FIXME("Cannot get back %02x instead of 0xCC at %08lx\n", |
| ch, (unsigned long)addr); |
| ch = (unsigned char)val; |
| if (!pio->write(hProcess, addr, &ch, 1, &sz) || sz != 1) return 0; |
| break; |
| case be_xpoint_watch_exec: |
| case be_xpoint_watch_read: |
| case be_xpoint_watch_write: |
| /* simply disable the entry */ |
| ctx->Dr7 &= ~DR7_ENABLE_MASK(val); |
| break; |
| default: |
| dbg_printf("Unknown bp type %c\n", type); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static unsigned be_x86_64_is_watchpoint_set(const CONTEXT* ctx, unsigned idx) |
| { |
| return ctx->Dr6 & (1 << idx); |
| } |
| |
| static void be_x86_64_clear_watchpoint(CONTEXT* ctx, unsigned idx) |
| { |
| ctx->Dr6 &= ~(1 << idx); |
| } |
| |
| static int be_x86_64_adjust_pc_for_break(CONTEXT* ctx, BOOL way) |
| { |
| if (way) |
| { |
| ctx->Rip--; |
| return -1; |
| } |
| ctx->Rip++; |
| return 1; |
| } |
| |
| static int be_x86_64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size, |
| unsigned ext_sign, LONGLONG* ret) |
| { |
| if (size != 1 && size != 2 && size != 4 && size != 8 && size != 16) |
| return FALSE; |
| |
| memset(ret, 0, sizeof(*ret)); /* clear unread bytes */ |
| /* FIXME: this assumes that debuggee and debugger use the same |
| * integral representation |
| */ |
| if (!memory_read_value(lvalue, size, ret)) return FALSE; |
| |
| /* propagate sign information */ |
| if (ext_sign && size < 16 && (*ret >> (size * 8 - 1)) != 0) |
| { |
| ULONGLONG neg = -1; |
| *ret |= neg << (size * 8); |
| } |
| return TRUE; |
| } |
| |
| static int be_x86_64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size, |
| long double* ret) |
| { |
| char tmp[sizeof(long double)]; |
| |
| /* FIXME: this assumes that debuggee and debugger use the same |
| * representation for reals |
| */ |
| if (!memory_read_value(lvalue, size, tmp)) return FALSE; |
| |
| /* float & double types have to be promoted to a long double */ |
| switch (size) |
| { |
| case sizeof(float): *ret = *(float*)tmp; break; |
| case sizeof(double): *ret = *(double*)tmp; break; |
| case sizeof(long double): *ret = *(long double*)tmp; break; |
| default: return FALSE; |
| } |
| return TRUE; |
| } |
| |
| 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_fetch_integer, |
| be_x86_64_fetch_float, |
| }; |
| #endif |
