557 lines
20 KiB
C
557 lines
20 KiB
C
/*
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* Stack walking
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*
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* Copyright 1995 Alexandre Julliard
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* Copyright 1996 Eric Youngdale
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* Copyright 1999 Ove Kåven
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* Copyright 2004 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "dbghelp_private.h"
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#include "winreg.h"
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#include "winternl.h"
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#include "wine/winbase16.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
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enum st_mode {stm_start, stm_32bit, stm_16bit, stm_done};
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static const char* wine_dbgstr_addr(const ADDRESS* addr)
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{
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if (!addr) return "(null)";
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switch (addr->Mode)
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{
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case AddrModeFlat:
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return wine_dbg_sprintf("flat<%08lx>", addr->Offset);
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case AddrMode1616:
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return wine_dbg_sprintf("1616<%04x:%04lx>", addr->Segment, addr->Offset);
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case AddrMode1632:
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return wine_dbg_sprintf("1632<%04x:%08lx>", addr->Segment, addr->Offset);
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case AddrModeReal:
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return wine_dbg_sprintf("real<%04x:%04lx>", addr->Segment, addr->Offset);
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default:
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return "unknown";
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}
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}
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static BOOL CALLBACK read_mem(HANDLE hProcess, DWORD addr, void* buffer,
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DWORD size, LPDWORD nread)
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{
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return ReadProcessMemory(hProcess, (void*)addr, buffer, size, nread);
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}
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static BOOL CALLBACK read_mem64(HANDLE hProcess, DWORD64 addr, void* buffer,
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DWORD size, LPDWORD nread)
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{
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return ReadProcessMemory(hProcess, (void*)(DWORD_PTR)addr, buffer, size, nread);
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}
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/* indexes in Reserved array */
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#define __CurrentMode 0
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#define __CurrentSwitch 1
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#define __NextSwitch 2
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#define curr_mode (frame->Reserved[__CurrentMode])
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#define curr_switch (frame->Reserved[__CurrentSwitch])
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#define next_switch (frame->Reserved[__NextSwitch])
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struct stack_walk_callback
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{
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HANDLE hProcess;
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HANDLE hThread;
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BOOL is32;
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union
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{
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struct
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{
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PREAD_PROCESS_MEMORY_ROUTINE f_read_mem;
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PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr;
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} s32;
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struct
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{
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PREAD_PROCESS_MEMORY_ROUTINE64 f_read_mem;
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PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr;
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} s64;
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} u;
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};
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static inline void addr_32to64(const ADDRESS* addr32, ADDRESS64* addr64)
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{
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addr64->Offset = (ULONG64)addr32->Offset;
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addr64->Segment = addr32->Segment;
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addr64->Mode = addr32->Mode;
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}
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static inline void addr_64to32(const ADDRESS64* addr64, ADDRESS* addr32)
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{
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addr32->Offset = (ULONG)addr64->Offset;
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addr32->Segment = addr64->Segment;
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addr32->Mode = addr64->Mode;
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}
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static inline BOOL sw_read_mem(struct stack_walk_callback* cb, DWORD addr, void* ptr, DWORD sz)
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{
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if (cb->is32)
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return cb->u.s32.f_read_mem(cb->hProcess, addr, ptr, sz, NULL);
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else
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return cb->u.s64.f_read_mem(cb->hProcess, addr, ptr, sz, NULL);
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}
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static inline DWORD sw_xlat_addr(struct stack_walk_callback* cb, ADDRESS* addr)
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{
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if (cb->is32)
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return cb->u.s32.f_xlat_adr(cb->hProcess, cb->hThread, addr);
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else if (cb->u.s64.f_xlat_adr)
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{
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ADDRESS64 addr64;
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addr_32to64(addr, &addr64);
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return cb->u.s64.f_xlat_adr(cb->hProcess, cb->hThread, &addr64);
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}
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else
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return addr_to_linear(cb->hProcess, cb->hThread, addr);
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}
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static BOOL stack_walk(struct stack_walk_callback* cb, LPSTACKFRAME frame)
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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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ADDRESS tmp;
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DWORD p;
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WORD val;
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BOOL do_switch;
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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 cSwitch=%08lx nSwitch=%08lx\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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curr_switch, next_switch);
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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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curr_mode = (frame->AddrPC.Mode == AddrModeFlat) ?
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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(cb->hThread, ThreadBasicInformation, &info,
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sizeof(info), NULL) == STATUS_SUCCESS)
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{
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curr_switch = (unsigned long)info.TebBaseAddress + FIELD_OFFSET(TEB, WOW32Reserved);
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if (!sw_read_mem(cb, curr_switch, &next_switch, sizeof(next_switch)))
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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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if (curr_mode == stm_16bit)
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{
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if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
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{
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WARN("Bad stack frame 0x%08lx\n", 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(cb, sw_xlat_addr(cb, &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(cb, &tmp);
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if (!sw_read_mem(cb, p, &frame16, sizeof(frame16)))
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{
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WARN("Bad stack frame 0x%08lx\n", p);
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goto done_err;
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}
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curr_switch = (DWORD)frame16.frame32;
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if (!sw_read_mem(cb, 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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}
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else
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{
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if (frame->AddrFrame.Offset == 0) goto done_err;
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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(cb, next_switch, &frame32, sizeof(frame32)))
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{
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WARN("Bad stack frame 0x%08lx\n", 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(cb, &tmp);
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if (!sw_read_mem(cb, p, &frame16, sizeof(frame16)))
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{
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WARN("Bad stack frame 0x%08lx\n", p);
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goto done_err;
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}
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curr_switch = (DWORD)frame16.frame32;
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curr_mode = stm_32bit;
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if (!sw_read_mem(cb, 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(cb, &tmp);
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if (!sw_read_mem(cb, p, &frame16, sizeof(frame16)))
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{
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WARN("Bad stack frame 0x%08lx\n", p);
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goto done_err;
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}
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TRACE("Got a 16 bit stack switch:"
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"\n\tframe32: %08lx"
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"\n\tedx:%08lx ecx:%08lx ebp:%08lx"
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"\n\tds:%04x es:%04x fs:%04x gs:%04x"
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"\n\tcall_from_ip:%08lx module_cs:%04lx relay=%08lx"
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"\n\tentry_ip:%04x entry_point:%08lx"
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"\n\tbp:%04x ip:%04x cs:%04x\n",
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(unsigned long)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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frame->AddrPC.Mode = AddrMode1616;
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frame->AddrPC.Segment = frame16.cs;
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frame->AddrPC.Offset = frame16.ip;
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frame->AddrFrame.Mode = AddrMode1616;
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frame->AddrFrame.Segment = SELECTOROF(next_switch);
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frame->AddrFrame.Offset = frame16.bp;
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frame->AddrStack.Mode = AddrMode1616;
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frame->AddrStack.Segment = SELECTOROF(next_switch);
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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(cb, next_switch, &frame32, sizeof(frame32)))
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{
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WARN("Bad stack frame 0x%08lx\n", 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(cb, sw_xlat_addr(cb, &tmp), &ch, sizeof(ch)))
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curr_switch = 0;
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curr_mode = stm_16bit;
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}
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}
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else
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{
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frame->AddrPC = frame->AddrReturn;
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if (curr_mode == stm_16bit)
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{
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frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(WORD);
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/* "pop up" previous BP value */
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if (!sw_read_mem(cb, sw_xlat_addr(cb, &frame->AddrFrame),
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&val, sizeof(WORD)))
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goto done_err;
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frame->AddrFrame.Offset = val;
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}
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else
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{
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frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(DWORD);
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/* "pop up" previous EBP value */
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if (!sw_read_mem(cb, frame->AddrFrame.Offset,
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&frame->AddrFrame.Offset, sizeof(DWORD)))
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goto done_err;
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}
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}
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}
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if (curr_mode == stm_16bit)
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{
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int i;
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p = sw_xlat_addr(cb, &frame->AddrFrame);
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if (!sw_read_mem(cb, p + sizeof(WORD), &val, sizeof(WORD)))
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goto done_err;
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frame->AddrReturn.Offset = val;
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/* get potential cs if a far call was used */
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if (!sw_read_mem(cb, p + 2 * sizeof(WORD), &val, sizeof(WORD)))
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goto done_err;
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if (frame->AddrFrame.Offset & 1)
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frame->AddrReturn.Segment = val; /* far call assumed */
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else
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{
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/* not explicitly marked as far call,
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* but check whether it could be anyway
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*/
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if ((val & 7) == 7 && val != frame->AddrReturn.Segment)
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{
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LDT_ENTRY le;
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if (GetThreadSelectorEntry(cb->hThread, val, &le) &&
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(le.HighWord.Bits.Type & 0x08)) /* code segment */
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{
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/* it is very uncommon to push a code segment cs as
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* a parameter, so this should work in most cases
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*/
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frame->AddrReturn.Segment = val;
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}
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}
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}
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frame->AddrFrame.Offset &= ~1;
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/* we "pop" parameters as 16 bit entities... of course, this won't
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* work if the parameter is in fact bigger than 16bit, but
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* there's no way to know that here
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*/
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for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
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{
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sw_read_mem(cb, p + (2 + i) * sizeof(WORD), &val, sizeof(val));
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frame->Params[i] = val;
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}
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}
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else
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{
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if (!sw_read_mem(cb, frame->AddrFrame.Offset + sizeof(DWORD),
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&frame->AddrReturn.Offset, sizeof(DWORD)))
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{
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WARN("Cannot read new frame offset %08lx\n", frame->AddrFrame.Offset + sizeof(DWORD));
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goto done_err;
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}
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sw_read_mem(cb, frame->AddrFrame.Offset + 2 * sizeof(DWORD),
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frame->Params, sizeof(frame->Params));
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}
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frame->Far = FALSE;
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frame->Virtual = FALSE;
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TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%s cSwitch=%08lx nSwitch=%08lx\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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curr_switch, next_switch);
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return TRUE;
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done_err:
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curr_mode = stm_done;
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return FALSE;
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}
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/***********************************************************************
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* StackWalk (DBGHELP.@)
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*/
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BOOL WINAPI StackWalk(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
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LPSTACKFRAME frame, LPVOID ctx,
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PREAD_PROCESS_MEMORY_ROUTINE f_read_mem,
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PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
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PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
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PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr)
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{
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struct stack_walk_callback swcb;
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TRACE("(%ld, %p, %p, %p, %p, %p, %p, %p, %p)\n",
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MachineType, hProcess, hThread, frame, ctx,
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f_read_mem, FunctionTableAccessRoutine,
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GetModuleBaseRoutine, f_xlat_adr);
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if (MachineType != IMAGE_FILE_MACHINE_I386)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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swcb.hProcess = hProcess;
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swcb.hThread = hThread;
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swcb.is32 = TRUE;
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/* sigh... MS isn't even consistent in the func prototypes */
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swcb.u.s32.f_read_mem = (f_read_mem) ? f_read_mem : read_mem;
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swcb.u.s32.f_xlat_adr = (f_xlat_adr) ? f_xlat_adr : addr_to_linear;
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return stack_walk(&swcb, frame);
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}
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|
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/***********************************************************************
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* StackWalk64 (DBGHELP.@)
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*/
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BOOL WINAPI StackWalk64(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
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LPSTACKFRAME64 frame64, LPVOID ctx,
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PREAD_PROCESS_MEMORY_ROUTINE64 f_read_mem,
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PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,
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PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
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PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr)
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{
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struct stack_walk_callback swcb;
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STACKFRAME frame32;
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BOOL ret;
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TRACE("(%ld, %p, %p, %p, %p, %p, %p, %p, %p) - stub!\n",
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MachineType, hProcess, hThread, frame64, ctx,
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f_read_mem, FunctionTableAccessRoutine,
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GetModuleBaseRoutine, f_xlat_adr);
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|
|
if (MachineType != IMAGE_FILE_MACHINE_I386)
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
addr_64to32(&frame64->AddrPC, &frame32.AddrPC);
|
|
addr_64to32(&frame64->AddrReturn, &frame32.AddrReturn);
|
|
addr_64to32(&frame64->AddrFrame, &frame32.AddrFrame);
|
|
addr_64to32(&frame64->AddrStack, &frame32.AddrStack);
|
|
addr_64to32(&frame64->AddrBStore, &frame32.AddrBStore);
|
|
frame32.FuncTableEntry = frame64->FuncTableEntry; /* FIXME */
|
|
frame32.Far = frame64->Far;
|
|
frame32.Virtual = frame64->Virtual;
|
|
frame32.Reserved[0] = (ULONG)frame64->Reserved[0];
|
|
frame32.Reserved[1] = (ULONG)frame64->Reserved[1];
|
|
frame32.Reserved[2] = (ULONG)frame64->Reserved[2];
|
|
/* we don't handle KdHelp */
|
|
|
|
swcb.hProcess = hProcess;
|
|
swcb.hThread = hThread;
|
|
swcb.is32 = FALSE;
|
|
/* sigh... MS isn't even consistent in the func prototypes */
|
|
swcb.u.s64.f_read_mem = (f_read_mem) ? f_read_mem : read_mem64;
|
|
swcb.u.s64.f_xlat_adr = f_xlat_adr;
|
|
|
|
ret = stack_walk(&swcb, &frame32);
|
|
|
|
addr_32to64(&frame32.AddrPC, &frame64->AddrPC);
|
|
addr_32to64(&frame32.AddrReturn, &frame64->AddrReturn);
|
|
addr_32to64(&frame32.AddrFrame, &frame64->AddrFrame);
|
|
addr_32to64(&frame32.AddrStack, &frame64->AddrStack);
|
|
addr_32to64(&frame32.AddrBStore, &frame64->AddrBStore);
|
|
frame64->FuncTableEntry = frame32.FuncTableEntry; /* FIXME */
|
|
frame64->Far = frame32.Far;
|
|
frame64->Virtual = frame32.Virtual;
|
|
frame64->Reserved[0] = (ULONG)frame32.Reserved[0];
|
|
frame64->Reserved[1] = (ULONG)frame32.Reserved[1];
|
|
frame64->Reserved[2] = (ULONG)frame32.Reserved[2];
|
|
/* we don't handle KdHelp */
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************
|
|
* SymRegisterFunctionEntryCallback (DBGHELP.@)
|
|
*
|
|
*
|
|
*/
|
|
BOOL WINAPI SymRegisterFunctionEntryCallback(HANDLE hProc,
|
|
PSYMBOL_FUNCENTRY_CALLBACK cb, PVOID user)
|
|
{
|
|
FIXME("(%p %p %p): stub!\n", hProc, cb, user);
|
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
|
return FALSE;
|
|
}
|
|
|
|
/******************************************************************
|
|
* SymRegisterFunctionEntryCallback64 (DBGHELP.@)
|
|
*
|
|
*
|
|
*/
|
|
BOOL WINAPI SymRegisterFunctionEntryCallback64(HANDLE hProc,
|
|
PSYMBOL_FUNCENTRY_CALLBACK64 cb,
|
|
ULONG64 user)
|
|
{
|
|
FIXME("(%p %p %s): stub!\n", hProc, cb, wine_dbgstr_longlong(user));
|
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
|
return FALSE;
|
|
}
|