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dbghelp: Create a cpu backend to store CPU dependent code, and use it for the i386 stack implementation.

This commit is contained in:
Eric Pouech 2009-12-22 14:21:07 +01:00 committed by Alexandre Julliard
parent 388814dfa9
commit 7230659ce9
5 changed files with 467 additions and 399 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
dlls/dbghelp/Makefile.in
View File

@ -10,6 +10,7 @@ DELAYIMPORTS = version
C_SRCS = \ C_SRCS = \
coff.c \ coff.c \
cpu_i386.c \
crc32.c \ crc32.c \
dbghelp.c \ dbghelp.c \
dwarf.c \ dwarf.c \

348
dlls/dbghelp/cpu_i386.c Normal file
View File

@ -0,0 +1,348 @@
/*
* File cpu_i386.c
*
* Copyright (C) 2009-2009, Eric Pouech.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "dbghelp_private.h"
#include "wine/winbase16.h"
#include "winternl.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
enum st_mode {stm_start, stm_32bit, stm_16bit, stm_done};
/* 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])
static BOOL i386_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame)
{
STACK32FRAME frame32;
STACK16FRAME frame16;
char ch;
ADDRESS64 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=%p nSwitch=%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"),
(void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)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;
}
/* Init done */
curr_mode = (frame->AddrPC.Mode == AddrModeFlat) ? stm_32bit : stm_16bit;
/* cur_switch holds address of WOW32Reserved field in TEB in debuggee
* address space
*/
if (NtQueryInformationThread(csw->hThread, ThreadBasicInformation, &info,
sizeof(info), NULL) == STATUS_SUCCESS)
{
curr_switch = (unsigned long)info.TebBaseAddress + FIELD_OFFSET(TEB, WOW32Reserved);
if (!sw_read_mem(csw, curr_switch, &p, sizeof(p)))
{
WARN("Can't read TEB:WOW32Reserved\n");
goto done_err;
}
next_switch = p;
if (curr_mode == stm_16bit)
{
if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
{
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)))
curr_switch = 0xFFFFFFFF;
}
else
{
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
tmp.Offset = OFFSETOF(next_switch);
p = sw_xlat_addr(csw, &tmp);
if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
{
WARN("Bad stack frame 0x%08x\n", p);
goto done_err;
}
curr_switch = (DWORD_PTR)frame16.frame32;
if (!sw_read_mem(csw, curr_switch, &ch, sizeof(ch)))
curr_switch = 0xFFFFFFFF;
}
}
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));
}
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 &&
frame->AddrFrame.Segment == SELECTOROF(curr_switch) &&
frame->AddrFrame.Offset >= OFFSETOF(curr_switch);
}
if (do_switch)
{
if (curr_mode == stm_16bit)
{
if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
{
WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
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);
p = sw_xlat_addr(csw, &tmp);
if (!sw_read_mem(csw->hProcess, p, &frame16, sizeof(frame16)))
{
WARN("Bad stack frame 0x%08x\n", p);
goto done_err;
}
curr_switch = (DWORD_PTR)frame16.frame32;
curr_mode = stm_32bit;
if (!sw_read_mem(csw, curr_switch, &ch, sizeof(ch)))
curr_switch = 0;
}
else
{
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
tmp.Offset = OFFSETOF(next_switch);
p = sw_xlat_addr(csw, &tmp);
if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
{
WARN("Bad stack frame 0x%08x\n", p);
goto done_err;
}
TRACE("Got a 16 bit stack switch:"
"\n\tframe32: %08lx"
"\n\tedx:%08x ecx:%08x ebp:%08x"
"\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"
"\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;
if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
{
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)))
curr_switch = 0;
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 */
if (!sw_read_mem(csw, sw_xlat_addr(csw, &frame->AddrFrame),
&val, sizeof(WORD)))
goto done_err;
frame->AddrFrame.Offset = val;
}
else
{
frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(DWORD);
/* "pop up" previous EBP value */
if (!sw_read_mem(csw, frame->AddrFrame.Offset,
&frame->AddrFrame.Offset, sizeof(DWORD)))
goto done_err;
}
}
}
if (curr_mode == stm_16bit)
{
unsigned int i;
p = sw_xlat_addr(csw, &frame->AddrFrame);
if (!sw_read_mem(csw, p + sizeof(WORD), &val, sizeof(WORD)))
goto done_err;
frame->AddrReturn.Offset = val;
/* get potential cs if a far call was used */
if (!sw_read_mem(csw, p + 2 * sizeof(WORD), &val, sizeof(WORD)))
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;
if (GetThreadSelectorEntry(csw->hThread, val, &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 = val;
}
}
}
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), &val, sizeof(val));
frame->Params[i] = val;
}
}
else
{
if (!sw_read_mem(csw, frame->AddrFrame.Offset + sizeof(DWORD),
&frame->AddrReturn.Offset, sizeof(DWORD)))
{
WARN("Cannot read new frame offset %p\n",
(void*)(DWORD_PTR)(frame->AddrFrame.Offset + (int)sizeof(DWORD)));
goto done_err;
}
sw_read_mem(csw, frame->AddrFrame.Offset + 2 * sizeof(DWORD),
frame->Params, sizeof(frame->Params));
}
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;
TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%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"),
(void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)next_switch, frame->FuncTableEntry);
return TRUE;
done_err:
curr_mode = stm_done;
return FALSE;
}
struct cpu cpu_i386 = {
IMAGE_FILE_MACHINE_I386,
i386_stack_walk,
};

22
dlls/dbghelp/dbghelp.c
View File

@ -151,6 +151,28 @@ const char* wine_dbgstr_addr(const ADDRESS64* addr)
} }
} }
extern struct cpu cpu_i386;
static struct cpu* dbghelp_cpus[] = {&cpu_i386, NULL};
struct cpu* dbghelp_current_cpu =
#if defined(__i386__)
&cpu_i386
#else
#error define support for you CPU
#endif
;
struct cpu* cpu_find(DWORD machine)
{
struct cpu** cpu;
for (cpu = dbghelp_cpus ; *cpu; cpu++)
{
if (cpu[0]->machine == machine) return cpu[0];
}
return NULL;
}
/****************************************************************** /******************************************************************
* SymSetSearchPathW (DBGHELP.@) * SymSetSearchPathW (DBGHELP.@)
* *

39
dlls/dbghelp/dbghelp_private.h
View File

@ -419,6 +419,38 @@ struct pdb_lookup
} u; } u;
}; };
struct cpu_stack_walk
{
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;
} 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;
} s64;
} u;
};
struct cpu
{
DWORD machine;
BOOL (*stack_walk)(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame);
};
extern struct cpu* dbghelp_current_cpu;
/* dbghelp.c */ /* dbghelp.c */
extern struct process* process_find_by_handle(HANDLE hProcess); extern struct process* process_find_by_handle(HANDLE hProcess);
extern HANDLE hMsvcrt; extern HANDLE hMsvcrt;
@ -426,6 +458,7 @@ extern BOOL validate_addr64(DWORD64 addr);
extern BOOL pcs_callback(const struct process* pcs, ULONG action, void* data); extern BOOL pcs_callback(const struct process* pcs, ULONG action, void* data);
extern void* fetch_buffer(struct process* pcs, unsigned size); extern void* fetch_buffer(struct process* pcs, unsigned size);
extern const char* wine_dbgstr_addr(const ADDRESS64* addr); extern const char* wine_dbgstr_addr(const ADDRESS64* addr);
extern struct cpu* cpu_find(DWORD);
/* crc32.c */ /* crc32.c */
extern DWORD calc_crc32(int fd); extern DWORD calc_crc32(int fd);
@ -533,6 +566,12 @@ extern BOOL dwarf2_parse(struct module* module, unsigned long load_offse
const unsigned char* line, unsigned int line_size, const unsigned char* line, unsigned int line_size,
const unsigned char* loclist, unsigned int loclist_size); const unsigned char* loclist, unsigned int loclist_size);
/* stack.c */
extern BOOL sw_read_mem(struct cpu_stack_walk* csw, DWORD64 addr, void* ptr, DWORD sz);
extern DWORD64 sw_xlat_addr(struct cpu_stack_walk* csw, ADDRESS64* addr);
extern void* sw_table_access(struct cpu_stack_walk* csw, DWORD64 addr);
extern DWORD64 sw_module_base(struct cpu_stack_walk* csw, DWORD64 addr);
/* symbol.c */ /* symbol.c */
extern const char* symt_get_name(const struct symt* sym); extern const char* symt_get_name(const struct symt* sym);
extern struct module* symt_cmp_addr_module; extern struct module* symt_cmp_addr_module;

426
dlls/dbghelp/stack.c
View File

@ -27,17 +27,11 @@
#include <string.h> #include <string.h>
#include <assert.h> #include <assert.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "dbghelp_private.h" #include "dbghelp_private.h"
#include "winternl.h"
#include "wine/winbase16.h"
#include "wine/debug.h" #include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp); WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
enum st_mode {stm_start, stm_32bit, stm_16bit, stm_done};
static DWORD64 WINAPI addr_to_linear(HANDLE hProcess, HANDLE hThread, ADDRESS64* addr) static DWORD64 WINAPI addr_to_linear(HANDLE hProcess, HANDLE hThread, ADDRESS64* addr)
{ {
LDT_ENTRY le; LDT_ENTRY le;
@ -85,39 +79,6 @@ static BOOL CALLBACK read_mem64(HANDLE hProcess, DWORD64 addr, void* buffer,
return TRUE; return TRUE;
} }
/* 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])
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;
} 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;
} s64;
} u;
};
static inline void addr_32to64(const ADDRESS* addr32, ADDRESS64* addr64) static inline void addr_32to64(const ADDRESS* addr32, ADDRESS64* addr64)
{ {
addr64->Offset = (ULONG64)addr32->Offset; addr64->Offset = (ULONG64)addr32->Offset;
@ -132,349 +93,43 @@ static inline void addr_64to32(const ADDRESS64* addr64, ADDRESS* addr32)
addr32->Mode = addr64->Mode; addr32->Mode = addr64->Mode;
} }
static inline BOOL sw_read_mem(struct stack_walk_callback* cb, DWORD64 addr, void* ptr, DWORD sz) BOOL sw_read_mem(struct cpu_stack_walk* csw, DWORD64 addr, void* ptr, DWORD sz)
{ {
if (cb->is32) if (csw->is32)
return cb->u.s32.f_read_mem(cb->hProcess, addr, ptr, sz, NULL); return csw->u.s32.f_read_mem(csw->hProcess, addr, ptr, sz, NULL);
else else
return cb->u.s64.f_read_mem(cb->hProcess, addr, ptr, sz, NULL); return csw->u.s64.f_read_mem(csw->hProcess, addr, ptr, sz, NULL);
} }
static inline DWORD64 sw_xlat_addr(struct stack_walk_callback* cb, ADDRESS64* addr) DWORD64 sw_xlat_addr(struct cpu_stack_walk* csw, ADDRESS64* addr)
{ {
if (addr->Mode == AddrModeFlat) return addr->Offset; if (addr->Mode == AddrModeFlat) return addr->Offset;
if (cb->is32) if (csw->is32)
{ {
ADDRESS addr32; ADDRESS addr32;
addr_64to32(addr, &addr32); addr_64to32(addr, &addr32);
return cb->u.s32.f_xlat_adr(cb->hProcess, cb->hThread, &addr32); return csw->u.s32.f_xlat_adr(csw->hProcess, csw->hThread, &addr32);
} }
else if (cb->u.s64.f_xlat_adr) else if (csw->u.s64.f_xlat_adr)
return cb->u.s64.f_xlat_adr(cb->hProcess, cb->hThread, addr); return csw->u.s64.f_xlat_adr(csw->hProcess, csw->hThread, addr);
return addr_to_linear(cb->hProcess, cb->hThread, addr); return addr_to_linear(csw->hProcess, csw->hThread, addr);
} }
static inline void* sw_tabl_acs(struct stack_walk_callback* cb, DWORD addr) void* sw_table_access(struct cpu_stack_walk* csw, DWORD64 addr)
{ {
if (cb->is32) if (csw->is32)
return cb->u.s32.f_tabl_acs(cb->hProcess, addr); return csw->u.s32.f_tabl_acs(csw->hProcess, addr);
else else
return cb->u.s64.f_tabl_acs(cb->hProcess, addr); return csw->u.s64.f_tabl_acs(csw->hProcess, addr);
} }
static inline DWORD sw_modl_bas(struct stack_walk_callback* cb, DWORD addr) DWORD64 sw_module_base(struct cpu_stack_walk* csw, DWORD64 addr)
{ {
if (cb->is32) if (csw->is32)
return cb->u.s32.f_modl_bas(cb->hProcess, addr); return csw->u.s32.f_modl_bas(csw->hProcess, addr);
else else
return cb->u.s64.f_modl_bas(cb->hProcess, addr); return csw->u.s64.f_modl_bas(csw->hProcess, addr);
}
static BOOL stack_walk(struct stack_walk_callback* cb, LPSTACKFRAME64 frame)
{
STACK32FRAME frame32;
STACK16FRAME frame16;
char ch;
ADDRESS64 tmp;
DWORD p;
WORD val;
BOOL do_switch;
unsigned int i;
/* sanity check */
if (curr_mode >= stm_done) return FALSE;
TRACE("Enter: PC=%s Frame=%s Return=%s Stack=%s Mode=%s cSwitch=%p nSwitch=%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"),
(void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)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;
}
/* Init done */
curr_mode = (frame->AddrPC.Mode == AddrModeFlat) ?
stm_32bit : stm_16bit;
/* cur_switch holds address of WOW32Reserved field in TEB in debuggee
* address space
*/
if (NtQueryInformationThread(cb->hThread, ThreadBasicInformation, &info,
sizeof(info), NULL) == STATUS_SUCCESS)
{
curr_switch = (unsigned long)info.TebBaseAddress + FIELD_OFFSET(TEB, WOW32Reserved);
if (!sw_read_mem(cb, curr_switch, &p, sizeof(p)))
{
WARN("Can't read TEB:WOW32Reserved\n");
goto done_err;
}
next_switch = p;
if (curr_mode == stm_16bit)
{
if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
{
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(cb, sw_xlat_addr(cb, &tmp), &ch, sizeof(ch)))
curr_switch = 0xFFFFFFFF;
}
else
{
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
tmp.Offset = OFFSETOF(next_switch);
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;
if (!sw_read_mem(cb, curr_switch, &ch, sizeof(ch)))
curr_switch = 0xFFFFFFFF;
}
}
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));
}
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 &&
frame->AddrFrame.Segment == SELECTOROF(curr_switch) &&
frame->AddrFrame.Offset >= OFFSETOF(curr_switch);
}
if (do_switch)
{
if (curr_mode == stm_16bit)
{
if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
{
WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
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);
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;
curr_mode = stm_32bit;
if (!sw_read_mem(cb, curr_switch, &ch, sizeof(ch)))
curr_switch = 0;
}
else
{
tmp.Mode = AddrMode1616;
tmp.Segment = SELECTOROF(next_switch);
tmp.Offset = OFFSETOF(next_switch);
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;
}
TRACE("Got a 16 bit stack switch:"
"\n\tframe32: %08lx"
"\n\tedx:%08x ecx:%08x ebp:%08x"
"\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"
"\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;
if (!sw_read_mem(cb, next_switch, &frame32, sizeof(frame32)))
{
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(cb, sw_xlat_addr(cb, &tmp), &ch, sizeof(ch)))
curr_switch = 0;
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 */
if (!sw_read_mem(cb, sw_xlat_addr(cb, &frame->AddrFrame),
&val, sizeof(WORD)))
goto done_err;
frame->AddrFrame.Offset = val;
}
else
{
frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(DWORD);
/* "pop up" previous EBP value */
if (!sw_read_mem(cb, frame->AddrFrame.Offset,
&frame->AddrFrame.Offset, sizeof(DWORD)))
goto done_err;
}
}
}
if (curr_mode == stm_16bit)
{
p = sw_xlat_addr(cb, &frame->AddrFrame);
if (!sw_read_mem(cb, p + sizeof(WORD), &val, sizeof(WORD)))
goto done_err;
frame->AddrReturn.Offset = val;
/* get potential cs if a far call was used */
if (!sw_read_mem(cb, p + 2 * sizeof(WORD), &val, sizeof(WORD)))
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;
if (GetThreadSelectorEntry(cb->hThread, val, &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 = val;
}
}
}
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(cb, p + (2 + i) * sizeof(WORD), &val, sizeof(val));
frame->Params[i] = val;
}
}
else
{
if (!sw_read_mem(cb, frame->AddrFrame.Offset + sizeof(DWORD),
&frame->AddrReturn.Offset, sizeof(DWORD)))
{
WARN("Cannot read new frame offset %p\n",
(void*)(DWORD_PTR)(frame->AddrFrame.Offset + (int)sizeof(DWORD)));
goto done_err;
}
for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
{
sw_read_mem(cb, frame->AddrFrame.Offset + 2 * sizeof(DWORD), &p, sizeof(p));
frame->Params[i] = p;
}
}
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;
TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%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"),
(void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)next_switch, frame->FuncTableEntry);
return TRUE;
done_err:
curr_mode = stm_done;
return FALSE;
} }
/*********************************************************************** /***********************************************************************
@ -487,16 +142,17 @@ BOOL WINAPI StackWalk(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine, PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr) PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr)
{ {
struct stack_walk_callback swcb; struct cpu_stack_walk csw;
STACKFRAME64 frame64; STACKFRAME64 frame64;
BOOL ret; BOOL ret;
struct cpu* cpu;
TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n", TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n",
MachineType, hProcess, hThread, frame32, ctx, MachineType, hProcess, hThread, frame32, ctx,
f_read_mem, FunctionTableAccessRoutine, f_read_mem, FunctionTableAccessRoutine,
GetModuleBaseRoutine, f_xlat_adr); GetModuleBaseRoutine, f_xlat_adr);
if (MachineType != IMAGE_FILE_MACHINE_I386) if (!(cpu = cpu_find(MachineType)))
{ {
SetLastError(ERROR_INVALID_PARAMETER); SetLastError(ERROR_INVALID_PARAMETER);
return FALSE; return FALSE;
@ -515,17 +171,17 @@ BOOL WINAPI StackWalk(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
frame64.Reserved[2] = frame32->Reserved[2]; frame64.Reserved[2] = frame32->Reserved[2];
/* we don't handle KdHelp */ /* we don't handle KdHelp */
swcb.hProcess = hProcess; csw.hProcess = hProcess;
swcb.hThread = hThread; csw.hThread = hThread;
swcb.is32 = TRUE; csw.is32 = TRUE;
/* sigh... MS isn't even consistent in the func prototypes */ /* sigh... MS isn't even consistent in the func prototypes */
swcb.u.s32.f_read_mem = (f_read_mem) ? f_read_mem : read_mem; csw.u.s32.f_read_mem = (f_read_mem) ? f_read_mem : read_mem;
swcb.u.s32.f_xlat_adr = f_xlat_adr; csw.u.s32.f_xlat_adr = f_xlat_adr;
swcb.u.s32.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess; csw.u.s32.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess;
swcb.u.s32.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase; csw.u.s32.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase;
ret = stack_walk(&swcb, &frame64);
if ((ret = cpu->stack_walk(&csw, &frame64)))
{
addr_64to32(&frame64.AddrPC, &frame32->AddrPC); addr_64to32(&frame64.AddrPC, &frame32->AddrPC);
addr_64to32(&frame64.AddrReturn, &frame32->AddrReturn); addr_64to32(&frame64.AddrReturn, &frame32->AddrReturn);
addr_64to32(&frame64.AddrFrame, &frame32->AddrFrame); addr_64to32(&frame64.AddrFrame, &frame32->AddrFrame);
@ -541,6 +197,7 @@ BOOL WINAPI StackWalk(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
frame32->Reserved[0] = frame64.Reserved[0]; frame32->Reserved[0] = frame64.Reserved[0];
frame32->Reserved[1] = frame64.Reserved[1]; frame32->Reserved[1] = frame64.Reserved[1];
frame32->Reserved[2] = frame64.Reserved[2]; frame32->Reserved[2] = frame64.Reserved[2];
}
return ret; return ret;
} }
@ -556,29 +213,30 @@ BOOL WINAPI StackWalk64(DWORD MachineType, HANDLE hProcess, HANDLE hThread,
PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine, PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr) PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr)
{ {
struct stack_walk_callback swcb; struct cpu_stack_walk csw;
struct cpu* cpu;
TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n", TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n",
MachineType, hProcess, hThread, frame, ctx, MachineType, hProcess, hThread, frame, ctx,
f_read_mem, FunctionTableAccessRoutine, f_read_mem, FunctionTableAccessRoutine,
GetModuleBaseRoutine, f_xlat_adr); GetModuleBaseRoutine, f_xlat_adr);
if (MachineType != IMAGE_FILE_MACHINE_I386) if (!(cpu = cpu_find(MachineType)))
{ {
SetLastError(ERROR_INVALID_PARAMETER); SetLastError(ERROR_INVALID_PARAMETER);
return FALSE; return FALSE;
} }
swcb.hProcess = hProcess; csw.hProcess = hProcess;
swcb.hThread = hThread; csw.hThread = hThread;
swcb.is32 = FALSE; csw.is32 = FALSE;
/* sigh... MS isn't even consistent in the func prototypes */ /* sigh... MS isn't even consistent in the func prototypes */
swcb.u.s64.f_read_mem = (f_read_mem) ? f_read_mem : read_mem64; csw.u.s64.f_read_mem = (f_read_mem) ? f_read_mem : read_mem64;
swcb.u.s64.f_xlat_adr = (f_xlat_adr) ? f_xlat_adr : addr_to_linear; csw.u.s64.f_xlat_adr = (f_xlat_adr) ? f_xlat_adr : addr_to_linear;
swcb.u.s64.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess64; csw.u.s64.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess64;
swcb.u.s64.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase64; csw.u.s64.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase64;
if (!stack_walk(&swcb, frame)) return FALSE; if (!cpu->stack_walk(&csw, frame)) return FALSE;
/* we don't handle KdHelp */ /* we don't handle KdHelp */
frame->KdHelp.Thread = 0xC000FADE; frame->KdHelp.Thread = 0xC000FADE;