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https://github.com/reactos/reactos.git
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724 lines
26 KiB
C
724 lines
26 KiB
C
/*
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* File cpu_i386.c
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*
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* Copyright (C) 2009-2009, 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 <assert.h>
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#ifndef DBGHELP_STATIC_LIB
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#include "ntstatus.h"
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#endif
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#include "dbghelp_private.h"
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#ifndef DBGHELP_STATIC_LIB
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#include "wine/winbase16.h"
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#include "winternl.h"
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#include "wine/debug.h"
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#endif
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WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
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#define STEP_FLAG 0x00000100 /* single step flag */
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#define V86_FLAG 0x00020000
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#define IS_VM86_MODE(ctx) (ctx->EFlags & V86_FLAG)
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#if defined(__i386__) && !defined(DBGHELP_STATIC_LIB)
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static ADDRESS_MODE get_selector_type(HANDLE hThread, const CONTEXT* ctx, WORD sel)
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{
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LDT_ENTRY le;
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if (IS_VM86_MODE(ctx)) return AddrModeReal;
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/* null or system selector */
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if (!(sel & 4) || ((sel >> 3) < 17)) return AddrModeFlat;
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if (hThread && GetThreadSelectorEntry(hThread, sel, &le))
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return le.HighWord.Bits.Default_Big ? AddrMode1632 : AddrMode1616;
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/* selector doesn't exist */
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return -1;
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}
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static unsigned i386_build_addr(HANDLE hThread, const CONTEXT* ctx, ADDRESS64* addr,
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unsigned seg, unsigned long offset)
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{
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addr->Mode = AddrModeFlat;
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addr->Segment = seg;
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addr->Offset = offset;
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if (seg)
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{
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switch (addr->Mode = get_selector_type(hThread, ctx, seg))
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{
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case AddrModeReal:
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case AddrMode1616:
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addr->Offset &= 0xffff;
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break;
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case AddrModeFlat:
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case AddrMode1632:
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break;
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default:
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return FALSE;
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}
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}
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return TRUE;
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}
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#endif
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#ifndef DBGHELP_STATIC_LIB
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static unsigned i386_get_addr(HANDLE hThread, const CONTEXT* ctx,
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enum cpu_addr ca, ADDRESS64* addr)
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{
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#ifdef __i386__
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switch (ca)
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{
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case cpu_addr_pc: return i386_build_addr(hThread, ctx, addr, ctx->SegCs, ctx->Eip);
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case cpu_addr_stack: return i386_build_addr(hThread, ctx, addr, ctx->SegSs, ctx->Esp);
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case cpu_addr_frame: return i386_build_addr(hThread, ctx, addr, ctx->SegSs, ctx->Ebp);
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}
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#endif
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return FALSE;
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}
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#endif /* DBGHELP_STATIC_LIB */
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#if defined(__i386__) && !defined(DBGHELP_STATIC_LIB)
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/* fetch_next_frame32()
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*
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* modify (at least) context.{eip, esp, ebp} using unwind information
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* either out of debug info (dwarf, pdb), or simple stack unwind
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*/
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static BOOL fetch_next_frame32(struct cpu_stack_walk* csw,
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CONTEXT* context, DWORD_PTR curr_pc)
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{
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DWORD_PTR xframe;
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struct pdb_cmd_pair cpair[4];
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DWORD val32;
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if (dwarf2_virtual_unwind(csw, curr_pc, context, &xframe))
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{
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context->Esp = xframe;
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return TRUE;
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}
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cpair[0].name = "$ebp"; cpair[0].pvalue = &context->Ebp;
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cpair[1].name = "$esp"; cpair[1].pvalue = &context->Esp;
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cpair[2].name = "$eip"; cpair[2].pvalue = &context->Eip;
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cpair[3].name = NULL; cpair[3].pvalue = NULL;
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#ifndef DBGHELP_STATIC_LIB
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if (!pdb_virtual_unwind(csw, curr_pc, context, cpair))
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#endif
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{
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/* do a simple unwind using ebp
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* we assume a "regular" prologue in the function has been used
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*/
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if (!context->Ebp) return FALSE;
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context->Esp = context->Ebp + 2 * sizeof(DWORD);
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if (!sw_read_mem(csw, context->Ebp + sizeof(DWORD), &val32, sizeof(DWORD)))
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{
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WARN("Cannot read new frame offset %p\n",
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(void*)(DWORD_PTR)(context->Ebp + (int)sizeof(DWORD)));
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return FALSE;
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}
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context->Eip = val32;
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/* "pop up" previous EBP value */
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if (!sw_read_mem(csw, context->Ebp, &val32, sizeof(DWORD)))
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return FALSE;
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context->Ebp = val32;
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}
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return TRUE;
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}
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#endif
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enum st_mode {stm_start, stm_32bit, stm_16bit, stm_done};
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/* indexes in Reserved array */
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#define __CurrentModeCount 0
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#define __CurrentSwitch 1
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#define __NextSwitch 2
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#define curr_mode (frame->Reserved[__CurrentModeCount] & 0x0F)
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#define curr_count (frame->Reserved[__CurrentModeCount] >> 4)
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#define curr_switch (frame->Reserved[__CurrentSwitch])
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#define next_switch (frame->Reserved[__NextSwitch])
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#define set_curr_mode(m) {frame->Reserved[__CurrentModeCount] &= ~0x0F; frame->Reserved[__CurrentModeCount] |= (m & 0x0F);}
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#define inc_curr_count() (frame->Reserved[__CurrentModeCount] += 0x10)
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#ifndef DBGHELP_STATIC_LIB
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static BOOL i386_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context)
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{
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STACK32FRAME frame32;
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STACK16FRAME frame16;
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char ch;
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ADDRESS64 tmp;
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DWORD p;
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WORD val16;
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DWORD val32;
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BOOL do_switch;
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#ifdef __i386__
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unsigned deltapc;
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CONTEXT _context;
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#endif
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/* sanity check */
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if (curr_mode >= stm_done) return FALSE;
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TRACE("Enter: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s cSwitch=%p nSwitch=%p\n",
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wine_dbgstr_addr(&frame->AddrPC),
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wine_dbgstr_addr(&frame->AddrFrame),
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wine_dbgstr_addr(&frame->AddrReturn),
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wine_dbgstr_addr(&frame->AddrStack),
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curr_mode == stm_start ? "start" : (curr_mode == stm_16bit ? "16bit" : "32bit"),
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wine_dbgstr_longlong(curr_count),
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(void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)next_switch);
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#ifdef __i386__
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/* if we're at first call (which doesn't actually unwind, it just computes ReturnPC,
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* or if we're doing the first real unwind (count == 1), then we can directly use
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* eip. otherwise, eip is *after* the insn that actually made the call to
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* previous frame, so decrease eip by delta pc (1!) so that we're inside previous
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* insn.
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* Doing so, we ensure that the pc used for unwinding is always inside the function
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* we want to use for next frame
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*/
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deltapc = curr_count <= 1 ? 0 : 1;
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if (!context)
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{
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/* setup a pseudo context for the rest of the code (esp. unwinding) */
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context = &_context;
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memset(context, 0, sizeof(*context));
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context->ContextFlags = CONTEXT_CONTROL | CONTEXT_SEGMENTS;
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if (frame->AddrPC.Mode != AddrModeFlat) context->SegCs = frame->AddrPC.Segment;
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context->Eip = frame->AddrPC.Offset;
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if (frame->AddrFrame.Mode != AddrModeFlat) context->SegSs = frame->AddrFrame.Segment;
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context->Ebp = frame->AddrFrame.Offset;
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if (frame->AddrStack.Mode != AddrModeFlat) context->SegSs = frame->AddrStack.Segment;
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context->Esp = frame->AddrStack.Offset;
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}
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#endif
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if (curr_mode == stm_start)
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{
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THREAD_BASIC_INFORMATION info;
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if ((frame->AddrPC.Mode == AddrModeFlat) &&
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(frame->AddrFrame.Mode != AddrModeFlat))
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{
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WARN("Bad AddrPC.Mode / AddrFrame.Mode combination\n");
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goto done_err;
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}
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/* Init done */
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set_curr_mode((frame->AddrPC.Mode == AddrModeFlat) ? stm_32bit : stm_16bit);
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/* cur_switch holds address of WOW32Reserved field in TEB in debuggee
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* address space
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*/
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if (NtQueryInformationThread(csw->hThread, ThreadBasicInformation, &info,
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sizeof(info), NULL) == STATUS_SUCCESS)
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{
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curr_switch = (DWORD_PTR)info.TebBaseAddress + FIELD_OFFSET(TEB, WOW32Reserved);
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if (!sw_read_mem(csw, curr_switch, &p, sizeof(p)))
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{
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WARN("Can't read TEB:WOW32Reserved\n");
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goto done_err;
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}
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next_switch = p;
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if (!next_switch) /* no 16-bit stack */
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{
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curr_switch = 0;
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}
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else if (curr_mode == stm_16bit)
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{
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if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
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{
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WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
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goto done_err;
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}
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curr_switch = (DWORD)frame32.frame16;
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tmp.Mode = AddrMode1616;
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tmp.Segment = SELECTOROF(curr_switch);
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tmp.Offset = OFFSETOF(curr_switch);
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if (!sw_read_mem(csw, sw_xlat_addr(csw, &tmp), &ch, sizeof(ch)))
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curr_switch = 0xFFFFFFFF;
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}
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else
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{
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tmp.Mode = AddrMode1616;
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tmp.Segment = SELECTOROF(next_switch);
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tmp.Offset = OFFSETOF(next_switch);
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p = sw_xlat_addr(csw, &tmp);
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if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
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{
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WARN("Bad stack frame 0x%08x\n", p);
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goto done_err;
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}
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curr_switch = (DWORD_PTR)frame16.frame32;
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if (!sw_read_mem(csw, curr_switch, &ch, sizeof(ch)))
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curr_switch = 0xFFFFFFFF;
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}
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}
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else
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/* FIXME: this will allow to work when we're not attached to a live target,
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* but the 16 <=> 32 switch facility won't be available.
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*/
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curr_switch = 0;
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frame->AddrReturn.Mode = frame->AddrStack.Mode = (curr_mode == stm_16bit) ? AddrMode1616 : AddrModeFlat;
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/* don't set up AddrStack on first call. Either the caller has set it up, or
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* we will get it in the next frame
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*/
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memset(&frame->AddrBStore, 0, sizeof(frame->AddrBStore));
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}
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else
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{
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if (frame->AddrFrame.Mode == AddrModeFlat)
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{
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assert(curr_mode == stm_32bit);
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do_switch = curr_switch && frame->AddrFrame.Offset >= curr_switch;
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}
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else
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{
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assert(curr_mode == stm_16bit);
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do_switch = curr_switch &&
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frame->AddrFrame.Segment == SELECTOROF(curr_switch) &&
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frame->AddrFrame.Offset >= OFFSETOF(curr_switch);
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}
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if (do_switch)
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{
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if (curr_mode == stm_16bit)
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{
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if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
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{
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WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
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goto done_err;
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}
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frame->AddrPC.Mode = AddrModeFlat;
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frame->AddrPC.Segment = 0;
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frame->AddrPC.Offset = frame32.retaddr;
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frame->AddrFrame.Mode = AddrModeFlat;
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frame->AddrFrame.Segment = 0;
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frame->AddrFrame.Offset = frame32.ebp;
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frame->AddrStack.Mode = AddrModeFlat;
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frame->AddrStack.Segment = 0;
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frame->AddrReturn.Mode = AddrModeFlat;
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frame->AddrReturn.Segment = 0;
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next_switch = curr_switch;
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tmp.Mode = AddrMode1616;
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tmp.Segment = SELECTOROF(next_switch);
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tmp.Offset = OFFSETOF(next_switch);
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p = sw_xlat_addr(csw, &tmp);
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if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
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{
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WARN("Bad stack frame 0x%08x\n", p);
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goto done_err;
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}
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curr_switch = (DWORD_PTR)frame16.frame32;
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set_curr_mode(stm_32bit);
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if (!sw_read_mem(csw, curr_switch, &ch, sizeof(ch)))
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curr_switch = 0;
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}
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else
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{
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tmp.Mode = AddrMode1616;
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tmp.Segment = SELECTOROF(next_switch);
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tmp.Offset = OFFSETOF(next_switch);
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p = sw_xlat_addr(csw, &tmp);
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|
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if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
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{
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WARN("Bad stack frame 0x%08x\n", p);
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goto done_err;
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}
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|
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TRACE("Got a 16 bit stack switch:"
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"\n\tframe32: %p"
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"\n\tedx:%08x ecx:%08x ebp:%08x"
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"\n\tds:%04x es:%04x fs:%04x gs:%04x"
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"\n\tcall_from_ip:%08x module_cs:%04x relay=%08x"
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"\n\tentry_ip:%04x entry_point:%08x"
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"\n\tbp:%04x ip:%04x cs:%04x\n",
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frame16.frame32,
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frame16.edx, frame16.ecx, frame16.ebp,
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frame16.ds, frame16.es, frame16.fs, frame16.gs,
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frame16.callfrom_ip, frame16.module_cs, frame16.relay,
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frame16.entry_ip, frame16.entry_point,
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frame16.bp, frame16.ip, frame16.cs);
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|
|
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frame->AddrPC.Mode = AddrMode1616;
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frame->AddrPC.Segment = frame16.cs;
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frame->AddrPC.Offset = frame16.ip;
|
|
|
|
frame->AddrFrame.Mode = AddrMode1616;
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frame->AddrFrame.Segment = SELECTOROF(next_switch);
|
|
frame->AddrFrame.Offset = frame16.bp;
|
|
|
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frame->AddrStack.Mode = AddrMode1616;
|
|
frame->AddrStack.Segment = SELECTOROF(next_switch);
|
|
|
|
frame->AddrReturn.Mode = AddrMode1616;
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frame->AddrReturn.Segment = frame16.cs;
|
|
|
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next_switch = curr_switch;
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if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
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{
|
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WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
|
|
goto done_err;
|
|
}
|
|
curr_switch = (DWORD)frame32.frame16;
|
|
tmp.Mode = AddrMode1616;
|
|
tmp.Segment = SELECTOROF(curr_switch);
|
|
tmp.Offset = OFFSETOF(curr_switch);
|
|
|
|
if (!sw_read_mem(csw, sw_xlat_addr(csw, &tmp), &ch, sizeof(ch)))
|
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curr_switch = 0;
|
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set_curr_mode(stm_16bit);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (curr_mode == stm_16bit)
|
|
{
|
|
frame->AddrPC = frame->AddrReturn;
|
|
frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(WORD);
|
|
/* "pop up" previous BP value */
|
|
if (!frame->AddrFrame.Offset ||
|
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!sw_read_mem(csw, sw_xlat_addr(csw, &frame->AddrFrame),
|
|
&val16, sizeof(WORD)))
|
|
goto done_err;
|
|
frame->AddrFrame.Offset = val16;
|
|
}
|
|
else
|
|
{
|
|
#ifdef __i386__
|
|
if (!fetch_next_frame32(csw, context, sw_xlat_addr(csw, &frame->AddrPC) - deltapc))
|
|
goto done_err;
|
|
|
|
frame->AddrStack.Mode = frame->AddrFrame.Mode = frame->AddrPC.Mode = AddrModeFlat;
|
|
frame->AddrStack.Offset = context->Esp;
|
|
frame->AddrFrame.Offset = context->Ebp;
|
|
if (frame->AddrReturn.Offset != context->Eip)
|
|
FIXME("new PC=%s different from Eip=%x\n",
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wine_dbgstr_longlong(frame->AddrReturn.Offset), context->Eip);
|
|
frame->AddrPC.Offset = context->Eip;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
if (curr_mode == stm_16bit)
|
|
{
|
|
unsigned int i;
|
|
|
|
p = sw_xlat_addr(csw, &frame->AddrFrame);
|
|
if (!sw_read_mem(csw, p + sizeof(WORD), &val16, sizeof(WORD)))
|
|
goto done_err;
|
|
frame->AddrReturn.Offset = val16;
|
|
/* get potential cs if a far call was used */
|
|
if (!sw_read_mem(csw, p + 2 * sizeof(WORD), &val16, sizeof(WORD)))
|
|
goto done_err;
|
|
if (frame->AddrFrame.Offset & 1)
|
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frame->AddrReturn.Segment = val16; /* far call assumed */
|
|
else
|
|
{
|
|
/* not explicitly marked as far call,
|
|
* but check whether it could be anyway
|
|
*/
|
|
if ((val16 & 7) == 7 && val16 != frame->AddrReturn.Segment)
|
|
{
|
|
LDT_ENTRY le;
|
|
|
|
if (GetThreadSelectorEntry(csw->hThread, val16, &le) &&
|
|
(le.HighWord.Bits.Type & 0x08)) /* code segment */
|
|
{
|
|
/* it is very uncommon to push a code segment cs as
|
|
* a parameter, so this should work in most cases
|
|
*/
|
|
frame->AddrReturn.Segment = val16;
|
|
}
|
|
}
|
|
}
|
|
frame->AddrFrame.Offset &= ~1;
|
|
/* we "pop" parameters as 16 bit entities... of course, this won't
|
|
* work if the parameter is in fact bigger than 16bit, but
|
|
* there's no way to know that here
|
|
*/
|
|
for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
|
|
{
|
|
sw_read_mem(csw, p + (2 + i) * sizeof(WORD), &val16, sizeof(val16));
|
|
frame->Params[i] = val16;
|
|
}
|
|
#ifdef __i386__
|
|
if (context)
|
|
{
|
|
#define SET(field, seg, reg) \
|
|
switch (frame->field.Mode) \
|
|
{ \
|
|
case AddrModeFlat: context->reg = frame->field.Offset; break; \
|
|
case AddrMode1616: context->seg = frame->field.Segment; context->reg = frame->field.Offset; break; \
|
|
default: assert(0); \
|
|
}
|
|
SET(AddrStack, SegSs, Esp);
|
|
SET(AddrFrame, SegSs, Ebp);
|
|
SET(AddrReturn, SegCs, Eip);
|
|
#undef SET
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
unsigned int i;
|
|
#ifdef __i386__
|
|
CONTEXT newctx = *context;
|
|
|
|
if (!fetch_next_frame32(csw, &newctx, frame->AddrPC.Offset - deltapc))
|
|
goto done_err;
|
|
frame->AddrReturn.Mode = AddrModeFlat;
|
|
frame->AddrReturn.Offset = newctx.Eip;
|
|
#endif
|
|
for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
|
|
{
|
|
sw_read_mem(csw, frame->AddrFrame.Offset + (2 + i) * sizeof(DWORD), &val32, sizeof(val32));
|
|
frame->Params[i] = val32;
|
|
}
|
|
}
|
|
|
|
frame->Far = TRUE;
|
|
frame->Virtual = TRUE;
|
|
p = sw_xlat_addr(csw, &frame->AddrPC);
|
|
if (p && sw_module_base(csw, p))
|
|
frame->FuncTableEntry = sw_table_access(csw, p);
|
|
else
|
|
frame->FuncTableEntry = NULL;
|
|
|
|
inc_curr_count();
|
|
TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s cSwitch=%p nSwitch=%p FuncTable=%p\n",
|
|
wine_dbgstr_addr(&frame->AddrPC),
|
|
wine_dbgstr_addr(&frame->AddrFrame),
|
|
wine_dbgstr_addr(&frame->AddrReturn),
|
|
wine_dbgstr_addr(&frame->AddrStack),
|
|
curr_mode == stm_start ? "start" : (curr_mode == stm_16bit ? "16bit" : "32bit"),
|
|
wine_dbgstr_longlong(curr_count),
|
|
(void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)next_switch, frame->FuncTableEntry);
|
|
|
|
return TRUE;
|
|
done_err:
|
|
set_curr_mode(stm_done);
|
|
return FALSE;
|
|
}
|
|
#endif /* DBGHELP_STATIC_LIB */
|
|
|
|
static unsigned i386_map_dwarf_register(unsigned regno)
|
|
{
|
|
unsigned reg;
|
|
|
|
switch (regno)
|
|
{
|
|
case 0: reg = CV_REG_EAX; break;
|
|
case 1: reg = CV_REG_ECX; break;
|
|
case 2: reg = CV_REG_EDX; break;
|
|
case 3: reg = CV_REG_EBX; break;
|
|
case 4: reg = CV_REG_ESP; break;
|
|
case 5: reg = CV_REG_EBP; break;
|
|
case 6: reg = CV_REG_ESI; break;
|
|
case 7: reg = CV_REG_EDI; break;
|
|
case 8: reg = CV_REG_EIP; break;
|
|
case 9: reg = CV_REG_EFLAGS; break;
|
|
case 10: reg = CV_REG_CS; break;
|
|
case 11: reg = CV_REG_SS; break;
|
|
case 12: reg = CV_REG_DS; break;
|
|
case 13: reg = CV_REG_ES; break;
|
|
case 14: reg = CV_REG_FS; break;
|
|
case 15: reg = CV_REG_GS; break;
|
|
case 16: case 17: case 18: case 19:
|
|
case 20: case 21: case 22: case 23:
|
|
reg = CV_REG_ST0 + regno - 16; break;
|
|
case 24: reg = CV_REG_CTRL; break;
|
|
case 25: reg = CV_REG_STAT; break;
|
|
case 26: reg = CV_REG_TAG; break;
|
|
case 27: reg = CV_REG_FPCS; break;
|
|
case 28: reg = CV_REG_FPIP; break;
|
|
case 29: reg = CV_REG_FPDS; break;
|
|
case 30: reg = CV_REG_FPDO; break;
|
|
/*
|
|
reg: fop 31
|
|
*/
|
|
case 32: case 33: case 34: case 35:
|
|
case 36: case 37: case 38: case 39:
|
|
reg = CV_REG_XMM0 + regno - 32; break;
|
|
case 40: reg = CV_REG_MXCSR; break;
|
|
default:
|
|
FIXME("Don't know how to map register %d\n", regno);
|
|
return 0;
|
|
}
|
|
return reg;
|
|
}
|
|
|
|
static void* i386_fetch_context_reg(CONTEXT* ctx, unsigned regno, unsigned* size)
|
|
{
|
|
#ifdef __i386__
|
|
switch (regno)
|
|
{
|
|
case CV_REG_EAX: *size = sizeof(ctx->Eax); return &ctx->Eax;
|
|
case CV_REG_EDX: *size = sizeof(ctx->Edx); return &ctx->Edx;
|
|
case CV_REG_ECX: *size = sizeof(ctx->Ecx); return &ctx->Ecx;
|
|
case CV_REG_EBX: *size = sizeof(ctx->Ebx); return &ctx->Ebx;
|
|
case CV_REG_ESI: *size = sizeof(ctx->Esi); return &ctx->Esi;
|
|
case CV_REG_EDI: *size = sizeof(ctx->Edi); return &ctx->Edi;
|
|
case CV_REG_EBP: *size = sizeof(ctx->Ebp); return &ctx->Ebp;
|
|
case CV_REG_ESP: *size = sizeof(ctx->Esp); return &ctx->Esp;
|
|
case CV_REG_EIP: *size = sizeof(ctx->Eip); return &ctx->Eip;
|
|
|
|
/* These are x87 floating point registers... They do not match a C type in
|
|
* the Linux ABI, so hardcode their 80-bitness. */
|
|
case CV_REG_ST0 + 0: *size = 10; return &ctx->FloatSave.RegisterArea[0*10];
|
|
case CV_REG_ST0 + 1: *size = 10; return &ctx->FloatSave.RegisterArea[1*10];
|
|
case CV_REG_ST0 + 2: *size = 10; return &ctx->FloatSave.RegisterArea[2*10];
|
|
case CV_REG_ST0 + 3: *size = 10; return &ctx->FloatSave.RegisterArea[3*10];
|
|
case CV_REG_ST0 + 4: *size = 10; return &ctx->FloatSave.RegisterArea[4*10];
|
|
case CV_REG_ST0 + 5: *size = 10; return &ctx->FloatSave.RegisterArea[5*10];
|
|
case CV_REG_ST0 + 6: *size = 10; return &ctx->FloatSave.RegisterArea[6*10];
|
|
case CV_REG_ST0 + 7: *size = 10; return &ctx->FloatSave.RegisterArea[7*10];
|
|
|
|
case CV_REG_CTRL: *size = sizeof(DWORD); return &ctx->FloatSave.ControlWord;
|
|
case CV_REG_STAT: *size = sizeof(DWORD); return &ctx->FloatSave.StatusWord;
|
|
case CV_REG_TAG: *size = sizeof(DWORD); return &ctx->FloatSave.TagWord;
|
|
case CV_REG_FPCS: *size = sizeof(DWORD); return &ctx->FloatSave.ErrorSelector;
|
|
case CV_REG_FPIP: *size = sizeof(DWORD); return &ctx->FloatSave.ErrorOffset;
|
|
case CV_REG_FPDS: *size = sizeof(DWORD); return &ctx->FloatSave.DataSelector;
|
|
case CV_REG_FPDO: *size = sizeof(DWORD); return &ctx->FloatSave.DataOffset;
|
|
|
|
case CV_REG_EFLAGS: *size = sizeof(ctx->EFlags); return &ctx->EFlags;
|
|
case CV_REG_ES: *size = sizeof(ctx->SegEs); return &ctx->SegEs;
|
|
case CV_REG_CS: *size = sizeof(ctx->SegCs); return &ctx->SegCs;
|
|
case CV_REG_SS: *size = sizeof(ctx->SegSs); return &ctx->SegSs;
|
|
case CV_REG_DS: *size = sizeof(ctx->SegDs); return &ctx->SegDs;
|
|
case CV_REG_FS: *size = sizeof(ctx->SegFs); return &ctx->SegFs;
|
|
case CV_REG_GS: *size = sizeof(ctx->SegGs); return &ctx->SegGs;
|
|
|
|
}
|
|
#endif
|
|
FIXME("Unknown register %x\n", regno);
|
|
return NULL;
|
|
}
|
|
|
|
static const char* i386_fetch_regname(unsigned regno)
|
|
{
|
|
switch (regno)
|
|
{
|
|
case CV_REG_EAX: return "eax";
|
|
case CV_REG_EDX: return "edx";
|
|
case CV_REG_ECX: return "ecx";
|
|
case CV_REG_EBX: return "ebx";
|
|
case CV_REG_ESI: return "esi";
|
|
case CV_REG_EDI: return "edi";
|
|
case CV_REG_EBP: return "ebp";
|
|
case CV_REG_ESP: return "esp";
|
|
case CV_REG_EIP: return "eip";
|
|
|
|
case CV_REG_ST0 + 0: return "st0";
|
|
case CV_REG_ST0 + 1: return "st1";
|
|
case CV_REG_ST0 + 2: return "st2";
|
|
case CV_REG_ST0 + 3: return "st3";
|
|
case CV_REG_ST0 + 4: return "st4";
|
|
case CV_REG_ST0 + 5: return "st5";
|
|
case CV_REG_ST0 + 6: return "st6";
|
|
case CV_REG_ST0 + 7: return "st7";
|
|
|
|
case CV_REG_EFLAGS: return "eflags";
|
|
case CV_REG_ES: return "es";
|
|
case CV_REG_CS: return "cs";
|
|
case CV_REG_SS: return "ss";
|
|
case CV_REG_DS: return "ds";
|
|
case CV_REG_FS: return "fs";
|
|
case CV_REG_GS: return "gs";
|
|
|
|
case CV_REG_CTRL: return "fpControl";
|
|
case CV_REG_STAT: return "fpStatus";
|
|
case CV_REG_TAG: return "fpTag";
|
|
case CV_REG_FPCS: return "fpCS";
|
|
case CV_REG_FPIP: return "fpIP";
|
|
case CV_REG_FPDS: return "fpDS";
|
|
case CV_REG_FPDO: return "fpData";
|
|
|
|
case CV_REG_XMM0 + 0: return "xmm0";
|
|
case CV_REG_XMM0 + 1: return "xmm1";
|
|
case CV_REG_XMM0 + 2: return "xmm2";
|
|
case CV_REG_XMM0 + 3: return "xmm3";
|
|
case CV_REG_XMM0 + 4: return "xmm4";
|
|
case CV_REG_XMM0 + 5: return "xmm5";
|
|
case CV_REG_XMM0 + 6: return "xmm6";
|
|
case CV_REG_XMM0 + 7: return "xmm7";
|
|
|
|
case CV_REG_MXCSR: return "MxCSR";
|
|
}
|
|
FIXME("Unknown register %x\n", regno);
|
|
return NULL;
|
|
}
|
|
|
|
#ifndef DBGHELP_STATIC_LIB
|
|
static BOOL i386_fetch_minidump_thread(struct dump_context* dc, unsigned index, unsigned flags, const CONTEXT* ctx)
|
|
{
|
|
if (ctx->ContextFlags && (flags & ThreadWriteInstructionWindow))
|
|
{
|
|
/* FIXME: crop values across module boundaries, */
|
|
#ifdef __i386__
|
|
ULONG base = ctx->Eip <= 0x80 ? 0 : ctx->Eip - 0x80;
|
|
minidump_add_memory_block(dc, base, ctx->Eip + 0x80 - base, 0);
|
|
#endif
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
static BOOL i386_fetch_minidump_module(struct dump_context* dc, unsigned index, unsigned flags)
|
|
{
|
|
/* FIXME: actually, we should probably take care of FPO data, unless it's stored in
|
|
* function table minidump stream
|
|
*/
|
|
return FALSE;
|
|
}
|
|
|
|
DECLSPEC_HIDDEN struct cpu cpu_i386 = {
|
|
IMAGE_FILE_MACHINE_I386,
|
|
4,
|
|
CV_REG_EBP,
|
|
#ifndef DBGHELP_STATIC_LIB
|
|
i386_get_addr,
|
|
i386_stack_walk,
|
|
#else
|
|
NULL,
|
|
NULL,
|
|
#endif
|
|
NULL,
|
|
i386_map_dwarf_register,
|
|
i386_fetch_context_reg,
|
|
i386_fetch_regname,
|
|
#ifndef DBGHELP_STATIC_LIB
|
|
i386_fetch_minidump_thread,
|
|
i386_fetch_minidump_module,
|
|
#else
|
|
NULL,
|
|
NULL,
|
|
#endif
|
|
};
|