679 lines
25 KiB
C
679 lines
25 KiB
C
/*
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* Debugger x86_64 specific functions
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*
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* Copyright 2004 Vincent Béron
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* Copyright 2009 Eric Pouech
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "debugger.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
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#if defined(__x86_64__)
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#define STEP_FLAG 0x00000100 /* single step flag */
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static unsigned be_x86_64_get_addr(HANDLE hThread, const CONTEXT* ctx,
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enum be_cpu_addr bca, ADDRESS64* addr)
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{
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addr->Mode = AddrModeFlat;
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switch (bca)
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{
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case be_cpu_addr_pc:
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addr->Segment = ctx->SegCs;
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addr->Offset = ctx->Rip;
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return TRUE;
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case be_cpu_addr_stack:
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addr->Segment = ctx->SegSs;
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addr->Offset = ctx->Rsp;
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return TRUE;
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case be_cpu_addr_frame:
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addr->Segment = ctx->SegSs;
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addr->Offset = ctx->Rbp;
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return TRUE;
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default:
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addr->Mode = -1;
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return FALSE;
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}
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}
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static unsigned be_x86_64_get_register_info(int regno, enum be_cpu_addr* kind)
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{
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/* this is true when running in 32bit mode... and wrong in 64 :-/ */
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switch (regno)
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{
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case CV_AMD64_RIP: *kind = be_cpu_addr_pc; return TRUE;
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case CV_AMD64_EBP: *kind = be_cpu_addr_frame; return TRUE;
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case CV_AMD64_ESP: *kind = be_cpu_addr_stack; return TRUE;
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}
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return FALSE;
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}
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static void be_x86_64_single_step(CONTEXT* ctx, unsigned enable)
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{
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if (enable) ctx->EFlags |= STEP_FLAG;
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else ctx->EFlags &= ~STEP_FLAG;
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}
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static inline long double m128a_to_longdouble(const M128A m)
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{
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/* gcc uses the same IEEE-754 representation as M128A for long double
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* but 16 byte aligned (hence only the first 10 bytes out of the 16 are used)
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*/
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return *(long double*)&m;
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}
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static void be_x86_64_print_context(HANDLE hThread, const CONTEXT* ctx,
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int all_regs)
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{
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static const char mxcsr_flags[16][4] = { "IE", "DE", "ZE", "OE", "UE", "PE", "DAZ", "IM",
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"DM", "ZM", "OM", "UM", "PM", "R-", "R+", "FZ" };
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static const char flags[] = "aVR-N--ODITSZ-A-P-C";
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char buf[33];
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int i;
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strcpy(buf, flags);
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for (i = 0; buf[i]; i++)
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if (buf[i] != '-' && !(ctx->EFlags & (1 << (sizeof(flags) - 2 - i))))
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buf[i] = ' ';
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dbg_printf("Register dump:\n");
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dbg_printf(" rip:%016lx rsp:%016lx rbp:%016lx eflags:%08x (%s)\n",
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ctx->Rip, ctx->Rsp, ctx->Rbp, ctx->EFlags, buf);
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dbg_printf(" rax:%016lx rbx:%016lx rcx:%016lx rdx:%016lx\n",
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ctx->Rax, ctx->Rbx, ctx->Rcx, ctx->Rdx);
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dbg_printf(" rsi:%016lx rdi:%016lx r8:%016lx r9:%016lx r10:%016lx\n",
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ctx->Rsi, ctx->Rdi, ctx->R8, ctx->R9, ctx->R10 );
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dbg_printf(" r11:%016lx r12:%016lx r13:%016lx r14:%016lx r15:%016lx\n",
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ctx->R11, ctx->R12, ctx->R13, ctx->R14, ctx->R15 );
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if (!all_regs) return;
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dbg_printf(" cs:%04x ds:%04x es:%04x fs:%04x gs:%04x ss:%04x\n",
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ctx->SegCs, ctx->SegDs, ctx->SegEs, ctx->SegFs, ctx->SegGs, ctx->SegSs );
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dbg_printf("Debug:\n");
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dbg_printf(" dr0:%016lx dr1:%016lx dr2:%016lx dr3:%016lx\n",
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ctx->Dr0, ctx->Dr1, ctx->Dr2, ctx->Dr3 );
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dbg_printf(" dr6:%016lx dr7:%016lx\n", ctx->Dr6, ctx->Dr7 );
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dbg_printf("Floating point:\n");
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dbg_printf(" flcw:%04x ", LOWORD(ctx->u.FltSave.ControlWord));
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dbg_printf(" fltw:%04x ", LOWORD(ctx->u.FltSave.TagWord));
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dbg_printf(" flsw:%04x", LOWORD(ctx->u.FltSave.StatusWord));
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dbg_printf("(cc:%d%d%d%d", (ctx->u.FltSave.StatusWord & 0x00004000) >> 14,
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(ctx->u.FltSave.StatusWord & 0x00000400) >> 10,
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(ctx->u.FltSave.StatusWord & 0x00000200) >> 9,
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(ctx->u.FltSave.StatusWord & 0x00000100) >> 8);
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dbg_printf(" top:%01x", (unsigned int) (ctx->u.FltSave.StatusWord & 0x00003800) >> 11);
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if (ctx->u.FltSave.StatusWord & 0x00000001) /* Invalid Fl OP */
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{
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if (ctx->u.FltSave.StatusWord & 0x00000040) /* Stack Fault */
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{
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if (ctx->u.FltSave.StatusWord & 0x00000200) /* C1 says Overflow */
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dbg_printf(" #IE(Stack Overflow)");
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else
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dbg_printf(" #IE(Stack Underflow)"); /* Underflow */
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}
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else dbg_printf(" #IE(Arithmetic error)"); /* Invalid Fl OP */
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}
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if (ctx->u.FltSave.StatusWord & 0x00000002) dbg_printf(" #DE"); /* Denormalised OP */
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if (ctx->u.FltSave.StatusWord & 0x00000004) dbg_printf(" #ZE"); /* Zero Divide */
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if (ctx->u.FltSave.StatusWord & 0x00000008) dbg_printf(" #OE"); /* Overflow */
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if (ctx->u.FltSave.StatusWord & 0x00000010) dbg_printf(" #UE"); /* Underflow */
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if (ctx->u.FltSave.StatusWord & 0x00000020) dbg_printf(" #PE"); /* Precision error */
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if (ctx->u.FltSave.StatusWord & 0x00000040)
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if (!(ctx->u.FltSave.StatusWord & 0x00000001))
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dbg_printf(" #SE"); /* Stack Fault (don't think this can occur) */
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if (ctx->u.FltSave.StatusWord & 0x00000080) dbg_printf(" #ES"); /* Error Summary */
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if (ctx->u.FltSave.StatusWord & 0x00008000) dbg_printf(" #FB"); /* FPU Busy */
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dbg_printf(")\n");
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dbg_printf(" flerr:%04x:%08x fldata:%04x:%08x\n",
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ctx->u.FltSave.ErrorSelector, ctx->u.FltSave.ErrorOffset,
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ctx->u.FltSave.DataSelector, ctx->u.FltSave.DataOffset );
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for (i = 0; i < 4; i++)
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{
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dbg_printf(" st%u:%-16Lg ", i, m128a_to_longdouble(ctx->u.FltSave.FloatRegisters[i]));
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}
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dbg_printf("\n");
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for (i = 4; i < 8; i++)
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{
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dbg_printf(" st%u:%-16Lg ", i, m128a_to_longdouble(ctx->u.FltSave.FloatRegisters[i]));
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}
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dbg_printf("\n");
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dbg_printf(" mxcsr: %04x (", ctx->u.FltSave.MxCsr );
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for (i = 0; i < 16; i++)
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if (ctx->u.FltSave.MxCsr & (1 << i)) dbg_printf( " %s", mxcsr_flags[i] );
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dbg_printf(" )\n");
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for (i = 0; i < 16; i++)
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{
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dbg_printf( " %sxmm%u: uint=%016lx%016lx", (i > 9) ? "" : " ", i,
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ctx->u.FltSave.XmmRegisters[i].High, ctx->u.FltSave.XmmRegisters[i].Low );
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dbg_printf( " double={%g; %g}", *(double *)&ctx->u.FltSave.XmmRegisters[i].Low,
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*(double *)&ctx->u.FltSave.XmmRegisters[i].High );
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dbg_printf( " float={%g; %g; %g; %g}\n",
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(double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 0),
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(double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 1),
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(double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 2),
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(double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 3) );
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}
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}
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static void be_x86_64_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
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{
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}
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static struct dbg_internal_var be_x86_64_ctx[] =
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{
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{CV_AMD64_AL, "AL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_char_int},
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{CV_AMD64_BL, "BL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_char_int},
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{CV_AMD64_CL, "CL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_char_int},
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{CV_AMD64_DL, "DL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_char_int},
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{CV_AMD64_AH, "AH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rax)+1), dbg_itype_unsigned_char_int},
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{CV_AMD64_BH, "BH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rbx)+1), dbg_itype_unsigned_char_int},
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{CV_AMD64_CH, "CH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rcx)+1), dbg_itype_unsigned_char_int},
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{CV_AMD64_DH, "DH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rdx)+1), dbg_itype_unsigned_char_int},
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{CV_AMD64_AX, "AX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_short_int},
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{CV_AMD64_BX, "BX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_short_int},
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{CV_AMD64_CX, "CX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_short_int},
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{CV_AMD64_DX, "DX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_short_int},
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{CV_AMD64_SP, "SP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_short_int},
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{CV_AMD64_BP, "BP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_short_int},
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{CV_AMD64_SI, "SI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_short_int},
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{CV_AMD64_DI, "DI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_short_int},
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{CV_AMD64_EAX, "EAX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_int},
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{CV_AMD64_EBX, "EBX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_int},
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{CV_AMD64_ECX, "ECX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_int},
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{CV_AMD64_EDX, "EDX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_int},
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{CV_AMD64_ESP, "ESP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_int},
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{CV_AMD64_EBP, "EBP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_int},
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{CV_AMD64_ESI, "ESI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_int},
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{CV_AMD64_EDI, "EDI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_int},
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{CV_AMD64_ES, "ES", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegEs), dbg_itype_unsigned_short_int},
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{CV_AMD64_CS, "CS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegCs), dbg_itype_unsigned_short_int},
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{CV_AMD64_SS, "SS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegSs), dbg_itype_unsigned_short_int},
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{CV_AMD64_DS, "DS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegDs), dbg_itype_unsigned_short_int},
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{CV_AMD64_FS, "FS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegFs), dbg_itype_unsigned_short_int},
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{CV_AMD64_GS, "GS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegGs), dbg_itype_unsigned_short_int},
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{CV_AMD64_FLAGS, "FLAGS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_short_int},
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{CV_AMD64_EFLAGS, "EFLAGS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_int},
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{CV_AMD64_RIP, "RIP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rip), dbg_itype_unsigned_long_int},
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{CV_AMD64_RAX, "RAX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_long_int},
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{CV_AMD64_RBX, "RBX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_long_int},
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{CV_AMD64_RCX, "RCX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_long_int},
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{CV_AMD64_RDX, "RDX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_long_int},
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{CV_AMD64_RSP, "RSP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_long_int},
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{CV_AMD64_RBP, "RBP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_long_int},
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{CV_AMD64_RSI, "RSI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_long_int},
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{CV_AMD64_RDI, "RDI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_long_int},
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{CV_AMD64_R8, "R8", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R8), dbg_itype_unsigned_long_int},
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{CV_AMD64_R9, "R9", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R9), dbg_itype_unsigned_long_int},
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{CV_AMD64_R10, "R10", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R10), dbg_itype_unsigned_long_int},
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{CV_AMD64_R11, "R11", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R11), dbg_itype_unsigned_long_int},
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{CV_AMD64_R12, "R12", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R12), dbg_itype_unsigned_long_int},
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{CV_AMD64_R13, "R13", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R13), dbg_itype_unsigned_long_int},
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{CV_AMD64_R14, "R14", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R14), dbg_itype_unsigned_long_int},
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{CV_AMD64_R15, "R15", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R15), dbg_itype_unsigned_long_int},
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{0, NULL, 0, dbg_itype_none}
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};
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#define f_mod(b) ((b)>>6)
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#define f_reg(b) (((b)>>3)&0x7)
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#define f_rm(b) ((b)&0x7)
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static unsigned be_x86_64_is_step_over_insn(const void* insn)
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{
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BYTE ch;
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for (;;)
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{
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if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE;
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switch (ch)
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{
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/* Skip all prefixes */
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case 0x2e: /* cs: */
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case 0x36: /* ss: */
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case 0x3e: /* ds: */
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case 0x26: /* es: */
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case 0x64: /* fs: */
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case 0x65: /* gs: */
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case 0x66: /* opcode size prefix */
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case 0x67: /* addr size prefix */
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case 0xf0: /* lock */
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case 0xf2: /* repne */
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case 0xf3: /* repe */
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insn = (const char*)insn + 1;
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continue;
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/* Handle call instructions */
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case 0xcd: /* int <intno> */
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case 0xe8: /* call <offset> */
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case 0x9a: /* lcall <seg>:<off> */
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return TRUE;
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case 0xff: /* call <regmodrm> */
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if (!dbg_read_memory((const char*)insn + 1, &ch, sizeof(ch)))
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return FALSE;
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return (((ch & 0x38) == 0x10) || ((ch & 0x38) == 0x18));
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/* Handle string instructions */
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case 0x6c: /* insb */
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case 0x6d: /* insw */
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case 0x6e: /* outsb */
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case 0x6f: /* outsw */
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case 0xa4: /* movsb */
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case 0xa5: /* movsw */
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case 0xa6: /* cmpsb */
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case 0xa7: /* cmpsw */
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case 0xaa: /* stosb */
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case 0xab: /* stosw */
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case 0xac: /* lodsb */
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case 0xad: /* lodsw */
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case 0xae: /* scasb */
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case 0xaf: /* scasw */
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return TRUE;
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default:
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return FALSE;
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}
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}
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}
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static unsigned be_x86_64_is_function_return(const void* insn)
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{
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BYTE c;
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/* sigh... amd64 for prefetch optimization requires 'rep ret' in some cases */
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if (!dbg_read_memory(insn, &c, sizeof(c))) return FALSE;
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if (c == 0xF3) /* REP */
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{
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insn = (const char*)insn + 1;
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if (!dbg_read_memory(insn, &c, sizeof(c))) return FALSE;
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}
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return c == 0xC2 /* ret */ || c == 0xC3 /* ret NN */;
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}
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static unsigned be_x86_64_is_break_insn(const void* insn)
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{
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BYTE c;
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return dbg_read_memory(insn, &c, sizeof(c)) && c == 0xCC;
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}
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static BOOL fetch_value(const char* addr, unsigned sz, int* value)
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{
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char value8;
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short value16;
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switch (sz)
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{
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case 8:
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if (!dbg_read_memory(addr, &value8, sizeof(value8))) return FALSE;
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*value = value8;
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break;
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case 16:
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if (!dbg_read_memory(addr, &value16, sizeof(value16))) return FALSE;
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*value = value16;
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case 32:
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if (!dbg_read_memory(addr, value, sizeof(*value))) return FALSE;
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break;
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default: return FALSE;
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}
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return TRUE;
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}
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static unsigned be_x86_64_is_func_call(const void* insn, ADDRESS64* callee)
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{
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BYTE ch;
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LONG delta;
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short segment;
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unsigned op_size = 32, rex = 0;
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DWORD64 dst;
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/* we assume 64bit mode all over the place */
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for (;;)
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{
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if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE;
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if (ch == 0x66) op_size = 16;
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else if (ch == 0x67) WINE_FIXME("prefix not supported %x\n", ch);
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else if (ch >= 0x40 && ch <= 0x4f) rex = ch & 0xf;
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else break;
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insn = (const char*)insn + 1;
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} while (0);
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|
|
|
/* 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 %p\n", ch, 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;
|
|
}
|
|
|
|
static int be_x86_64_store_integer(const struct dbg_lvalue* lvalue, unsigned size,
|
|
unsigned is_signed, LONGLONG val)
|
|
{
|
|
/* this is simple as we're on a little endian CPU */
|
|
return memory_write_value(lvalue, size, &val);
|
|
}
|
|
|
|
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,
|
|
be_x86_64_store_integer,
|
|
};
|
|
#endif
|