Sweden-Number/dlls/dbghelp/stack.c

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/*
* Stack walking
*
* Copyright 1995 Alexandre Julliard
* Copyright 1996 Eric Youngdale
* Copyright 1999 Ove Kåven
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* Copyright 2004 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
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#include "ntstatus.h"
#define WIN32_NO_STATUS
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#include "dbghelp_private.h"
#include "winternl.h"
#include "wine/winbase16.h"
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#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
enum st_mode {stm_start, stm_32bit, stm_16bit, stm_done};
static const char* wine_dbgstr_addr(const ADDRESS* addr)
{
if (!addr) return "(null)";
switch (addr->Mode)
{
case AddrModeFlat:
return wine_dbg_sprintf("flat<%08x>", addr->Offset);
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case AddrMode1616:
return wine_dbg_sprintf("1616<%04x:%04x>", addr->Segment, addr->Offset);
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case AddrMode1632:
return wine_dbg_sprintf("1632<%04x:%08x>", addr->Segment, addr->Offset);
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case AddrModeReal:
return wine_dbg_sprintf("real<%04x:%04x>", addr->Segment, addr->Offset);
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default:
return "unknown";
}
}
static DWORD WINAPI addr_to_linear(HANDLE hProcess, HANDLE hThread, ADDRESS* addr)
{
LDT_ENTRY le;
switch (addr->Mode)
{
case AddrMode1616:
if (GetThreadSelectorEntry(hThread, addr->Segment, &le))
return (le.HighWord.Bits.BaseHi << 24) +
(le.HighWord.Bits.BaseMid << 16) + le.BaseLow + LOWORD(addr->Offset);
break;
case AddrMode1632:
if (GetThreadSelectorEntry(hThread, addr->Segment, &le))
return (le.HighWord.Bits.BaseHi << 24) +
(le.HighWord.Bits.BaseMid << 16) + le.BaseLow + addr->Offset;
break;
case AddrModeReal:
return (DWORD)(LOWORD(addr->Segment) << 4) + addr->Offset;
case AddrModeFlat:
return addr->Offset;
default:
FIXME("Unsupported (yet) mode (%x)\n", addr->Mode);
return 0;
}
FIXME("Failed to linearize address %04x:%08x (mode %x)\n",
addr->Segment, addr->Offset, addr->Mode);
return 0;
}
static BOOL CALLBACK read_mem(HANDLE hProcess, DWORD addr, void* buffer,
DWORD size, LPDWORD nread)
{
SIZE_T r;
if (!ReadProcessMemory(hProcess, (void*)addr, buffer, size, &r)) return FALSE;
if (nread) *nread = r;
return TRUE;
}
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static BOOL CALLBACK read_mem64(HANDLE hProcess, DWORD64 addr, void* buffer,
DWORD size, LPDWORD nread)
{
SIZE_T r;
if (!ReadProcessMemory(hProcess, (void*)(DWORD_PTR)addr, buffer, size, &r)) return FALSE;
if (nread) *nread = r;
return TRUE;
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}
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/* indexes in Reserved array */
#define __CurrentMode 0
#define __CurrentSwitch 1
#define __NextSwitch 2
#define curr_mode (frame->Reserved[__CurrentMode])
#define curr_switch (frame->Reserved[__CurrentSwitch])
#define next_switch (frame->Reserved[__NextSwitch])
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struct stack_walk_callback
{
HANDLE hProcess;
HANDLE hThread;
BOOL is32;
union
{
struct
{
PREAD_PROCESS_MEMORY_ROUTINE f_read_mem;
PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr;
PFUNCTION_TABLE_ACCESS_ROUTINE f_tabl_acs;
PGET_MODULE_BASE_ROUTINE f_modl_bas;
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} s32;
struct
{
PREAD_PROCESS_MEMORY_ROUTINE64 f_read_mem;
PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr;
PFUNCTION_TABLE_ACCESS_ROUTINE64 f_tabl_acs;
PGET_MODULE_BASE_ROUTINE64 f_modl_bas;
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} s64;
} u;
};
static inline void addr_32to64(const ADDRESS* addr32, ADDRESS64* addr64)
{
addr64->Offset = (ULONG64)addr32->Offset;
addr64->Segment = addr32->Segment;
addr64->Mode = addr32->Mode;
}
static inline void addr_64to32(const ADDRESS64* addr64, ADDRESS* addr32)
{
addr32->Offset = (ULONG)addr64->Offset;
addr32->Segment = addr64->Segment;
addr32->Mode = addr64->Mode;
}
static inline BOOL sw_read_mem(struct stack_walk_callback* cb, DWORD addr, void* ptr, DWORD sz)
{
if (cb->is32)
return cb->u.s32.f_read_mem(cb->hProcess, addr, ptr, sz, NULL);
else
return cb->u.s64.f_read_mem(cb->hProcess, addr, ptr, sz, NULL);
}
static inline DWORD sw_xlat_addr(struct stack_walk_callback* cb, ADDRESS* addr)
{
if (addr->Mode == AddrModeFlat) return addr->Offset;
if (cb->is32) return cb->u.s32.f_xlat_adr(cb->hProcess, cb->hThread, addr);
if (cb->u.s64.f_xlat_adr)
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{
ADDRESS64 addr64;
addr_32to64(addr, &addr64);
return cb->u.s64.f_xlat_adr(cb->hProcess, cb->hThread, &addr64);
}
return addr_to_linear(cb->hProcess, cb->hThread, addr);
}
static inline void* sw_tabl_acs(struct stack_walk_callback* cb, DWORD addr)
{
if (cb->is32)
return cb->u.s32.f_tabl_acs(cb->hProcess, addr);
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else
return cb->u.s64.f_tabl_acs(cb->hProcess, addr);
}
static inline DWORD sw_modl_bas(struct stack_walk_callback* cb, DWORD addr)
{
if (cb->is32)
return cb->u.s32.f_modl_bas(cb->hProcess, addr);
else
return cb->u.s64.f_modl_bas(cb->hProcess, addr);
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}
static BOOL stack_walk(struct stack_walk_callback* cb, LPSTACKFRAME frame)
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{
STACK32FRAME frame32;
STACK16FRAME frame16;
char ch;
ADDRESS tmp;
DWORD p;
WORD val;
BOOL do_switch;
/* sanity check */
if (curr_mode >= stm_done) return FALSE;
TRACE("Enter: PC=%s Frame=%s Return=%s Stack=%s Mode=%s cSwitch=%08x nSwitch=%08x\n",
wine_dbgstr_addr(&frame->AddrPC),
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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"),
curr_switch, next_switch);
if (curr_mode == stm_start)
{
THREAD_BASIC_INFORMATION info;
if ((frame->AddrPC.Mode == AddrModeFlat) &&
(frame->AddrFrame.Mode != AddrModeFlat))
{
WARN("Bad AddrPC.Mode / AddrFrame.Mode combination\n");
goto done_err;
}
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/* Init done */
curr_mode = (frame->AddrPC.Mode == AddrModeFlat) ?
stm_32bit : stm_16bit;
/* cur_switch holds address of WOW32Reserved field in TEB in debuggee
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* address space
*/
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if (NtQueryInformationThread(cb->hThread, ThreadBasicInformation, &info,
sizeof(info), NULL) == STATUS_SUCCESS)
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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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{
WARN("Can't read TEB:WOW32Reserved\n");
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goto done_err;
}
if (curr_mode == stm_16bit)
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{
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if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
{
WARN("Bad stack frame 0x%08x\n", next_switch);
goto done_err;
}
curr_switch = (DWORD)frame32.frame16;
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(curr_switch);
tmp.Offset = OFFSETOF(curr_switch);
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if (!sw_read_mem(cb, sw_xlat_addr(cb, &tmp), &ch, sizeof(ch)))
curr_switch = 0xFFFFFFFF;
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}
else
{
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
tmp.Offset = OFFSETOF(next_switch);
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p = sw_xlat_addr(cb, &tmp);
if (!sw_read_mem(cb, p, &frame16, sizeof(frame16)))
{
WARN("Bad stack frame 0x%08x\n", p);
goto done_err;
}
curr_switch = (DWORD_PTR)frame16.frame32;
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if (!sw_read_mem(cb, curr_switch, &ch, sizeof(ch)))
curr_switch = 0xFFFFFFFF;
}
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}
else
/* FIXME: this will allow to work when we're not attached to a live target,
* but the 16 <=> 32 switch facility won't be available.
*/
curr_switch = 0;
frame->AddrReturn.Mode = frame->AddrStack.Mode = (curr_mode == stm_16bit) ? AddrMode1616 : AddrModeFlat;
/* don't set up AddrStack on first call. Either the caller has set it up, or
* we will get it in the next frame
*/
memset(&frame->AddrBStore, 0, sizeof(frame->AddrBStore));
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}
else
{
if (frame->AddrFrame.Offset == 0) goto done_err;
if (frame->AddrFrame.Mode == AddrModeFlat)
{
assert(curr_mode == stm_32bit);
do_switch = curr_switch && frame->AddrFrame.Offset >= curr_switch;
}
else
{
assert(curr_mode == stm_16bit);
do_switch = curr_switch &&
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frame->AddrFrame.Segment == SELECTOROF(curr_switch) &&
frame->AddrFrame.Offset >= OFFSETOF(curr_switch);
}
if (do_switch)
{
if (curr_mode == stm_16bit)
{
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if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
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{
WARN("Bad stack frame 0x%08x\n", next_switch);
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goto done_err;
}
frame->AddrPC.Mode = AddrModeFlat;
frame->AddrPC.Segment = 0;
frame->AddrPC.Offset = frame32.retaddr;
frame->AddrFrame.Mode = AddrModeFlat;
frame->AddrFrame.Segment = 0;
frame->AddrFrame.Offset = frame32.ebp;
frame->AddrStack.Mode = AddrModeFlat;
frame->AddrStack.Segment = 0;
frame->AddrReturn.Mode = AddrModeFlat;
frame->AddrReturn.Segment = 0;
next_switch = curr_switch;
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
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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{
WARN("Bad stack frame 0x%08x\n", p);
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goto done_err;
}
curr_switch = (DWORD_PTR)frame16.frame32;
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curr_mode = stm_32bit;
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if (!sw_read_mem(cb, curr_switch, &ch, sizeof(ch)))
curr_switch = 0;
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}
else
{
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
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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{
WARN("Bad stack frame 0x%08x\n", p);
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goto done_err;
}
TRACE("Got a 16 bit stack switch:"
"\n\tframe32: %08lx"
"\n\tedx:%08x ecx:%08x ebp:%08x"
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"\n\tds:%04x es:%04x fs:%04x gs:%04x"
"\n\tcall_from_ip:%08x module_cs:%04x relay=%08x"
"\n\tentry_ip:%04x entry_point:%08x"
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"\n\tbp:%04x ip:%04x cs:%04x\n",
(unsigned long)frame16.frame32,
frame16.edx, frame16.ecx, frame16.ebp,
frame16.ds, frame16.es, frame16.fs, frame16.gs,
frame16.callfrom_ip, frame16.module_cs, frame16.relay,
frame16.entry_ip, frame16.entry_point,
frame16.bp, frame16.ip, frame16.cs);
frame->AddrPC.Mode = AddrMode1616;
frame->AddrPC.Segment = frame16.cs;
frame->AddrPC.Offset = frame16.ip;
frame->AddrFrame.Mode = AddrMode1616;
frame->AddrFrame.Segment = SELECTOROF(next_switch);
frame->AddrFrame.Offset = frame16.bp;
frame->AddrStack.Mode = AddrMode1616;
frame->AddrStack.Segment = SELECTOROF(next_switch);
frame->AddrReturn.Mode = AddrMode1616;
frame->AddrReturn.Segment = frame16.cs;
next_switch = curr_switch;
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if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
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{
WARN("Bad stack frame 0x%08x\n", next_switch);
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goto done_err;
}
curr_switch = (DWORD)frame32.frame16;
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(curr_switch);
tmp.Offset = OFFSETOF(curr_switch);
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if (!sw_read_mem(cb, sw_xlat_addr(cb, &tmp), &ch, sizeof(ch)))
curr_switch = 0;
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curr_mode = stm_16bit;
}
}
else
{
frame->AddrPC = frame->AddrReturn;
if (curr_mode == stm_16bit)
{
frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(WORD);
/* "pop up" previous BP value */
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if (!sw_read_mem(cb, sw_xlat_addr(cb, &frame->AddrFrame),
&val, sizeof(WORD)))
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goto done_err;
frame->AddrFrame.Offset = val;
}
else
{
frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(DWORD);
/* "pop up" previous EBP value */
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if (!sw_read_mem(cb, frame->AddrFrame.Offset,
&frame->AddrFrame.Offset, sizeof(DWORD)))
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goto done_err;
}
}
}
if (curr_mode == stm_16bit)
{
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unsigned int i;
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p = sw_xlat_addr(cb, &frame->AddrFrame);
if (!sw_read_mem(cb, p + sizeof(WORD), &val, sizeof(WORD)))
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goto done_err;
frame->AddrReturn.Offset = val;
/* 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;
if (frame->AddrFrame.Offset & 1)
frame->AddrReturn.Segment = val; /* far call assumed */
else
{
/* not explicitly marked as far call,
* but check whether it could be anyway
*/
if ((val & 7) == 7 && val != frame->AddrReturn.Segment)
{
LDT_ENTRY le;
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if (GetThreadSelectorEntry(cb->hThread, val, &le) &&
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(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 = val;
}
}
}
frame->AddrFrame.Offset &= ~1;
/* 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
* there's no way to know that here
*/
for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
{
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sw_read_mem(cb, p + (2 + i) * sizeof(WORD), &val, sizeof(val));
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frame->Params[i] = val;
}
}
else
{
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if (!sw_read_mem(cb, frame->AddrFrame.Offset + sizeof(DWORD),
&frame->AddrReturn.Offset, sizeof(DWORD)))
{
WARN("Cannot read new frame offset %08x\n", frame->AddrFrame.Offset + (int)sizeof(DWORD));
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goto done_err;
}
sw_read_mem(cb, frame->AddrFrame.Offset + 2 * sizeof(DWORD),
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frame->Params, sizeof(frame->Params));
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}
frame->Far = TRUE;
frame->Virtual = TRUE;
p = sw_xlat_addr(cb, &frame->AddrPC);
if (p && sw_modl_bas(cb, p))
frame->FuncTableEntry = sw_tabl_acs(cb, p);
else
frame->FuncTableEntry = NULL;
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TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%s cSwitch=%08x nSwitch=%08x FuncTable=%p\n",
wine_dbgstr_addr(&frame->AddrPC),
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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"),
curr_switch, next_switch, frame->FuncTableEntry);
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return TRUE;
done_err:
curr_mode = stm_done;
return FALSE;
}
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/***********************************************************************
* StackWalk (DBGHELP.@)
*/
BOOL WINAPI StackWalk(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
LPSTACKFRAME frame, PVOID ctx,
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PREAD_PROCESS_MEMORY_ROUTINE f_read_mem,
PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr)
{
struct stack_walk_callback swcb;
TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n",
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MachineType, hProcess, hThread, frame, ctx,
f_read_mem, FunctionTableAccessRoutine,
GetModuleBaseRoutine, f_xlat_adr);
if (MachineType != IMAGE_FILE_MACHINE_I386)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
swcb.hProcess = hProcess;
swcb.hThread = hThread;
swcb.is32 = TRUE;
/* sigh... MS isn't even consistent in the func prototypes */
swcb.u.s32.f_read_mem = (f_read_mem) ? f_read_mem : read_mem;
swcb.u.s32.f_xlat_adr = (f_xlat_adr) ? f_xlat_adr : addr_to_linear;
swcb.u.s32.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess;
swcb.u.s32.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase;
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return stack_walk(&swcb, frame);
}
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/***********************************************************************
* StackWalk64 (DBGHELP.@)
*/
BOOL WINAPI StackWalk64(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
LPSTACKFRAME64 frame64, PVOID ctx,
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PREAD_PROCESS_MEMORY_ROUTINE64 f_read_mem,
PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,
PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr)
{
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struct stack_walk_callback swcb;
STACKFRAME frame32;
BOOL ret;
TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n",
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MachineType, hProcess, hThread, frame64, ctx,
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f_read_mem, FunctionTableAccessRoutine,
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);
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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;
swcb.u.s64.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess64;
swcb.u.s64.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase64;
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ret = stack_walk(&swcb, &frame32);
addr_32to64(&frame32.AddrPC, &frame64->AddrPC);
addr_32to64(&frame32.AddrReturn, &frame64->AddrReturn);
addr_32to64(&frame32.AddrFrame, &frame64->AddrFrame);
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addr_32to64(&frame32.AddrStack, &frame64->AddrStack);
addr_32to64(&frame32.AddrBStore, &frame64->AddrBStore);
frame64->FuncTableEntry = frame32.FuncTableEntry; /* FIXME */
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frame64->Params[0] = frame32.Params[0];
frame64->Params[1] = frame32.Params[1];
frame64->Params[2] = frame32.Params[2];
frame64->Params[3] = frame32.Params[3];
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frame64->Far = frame32.Far;
frame64->Virtual = frame32.Virtual;
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frame64->Reserved[0] = frame32.Reserved[0];
frame64->Reserved[1] = frame32.Reserved[1];
frame64->Reserved[2] = frame32.Reserved[2];
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/* we don't handle KdHelp */
frame64->KdHelp.Thread = 0xC000FADE;
frame64->KdHelp.ThCallbackStack = 0x10;
frame64->KdHelp.ThCallbackBStore = 0;
frame64->KdHelp.NextCallback = 0;
frame64->KdHelp.FramePointer = 0;
frame64->KdHelp.KiCallUserMode = 0xD000DAFE;
frame64->KdHelp.KeUserCallbackDispatcher = 0xE000F000;
frame64->KdHelp.SystemRangeStart = 0xC0000000;
frame64->KdHelp.Reserved[0] /* KiUserExceptionDispatcher */ = 0xE0005000;
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return ret;
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}
/******************************************************************
* 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;
}