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wine/relay32/relay386.c
Patrik Stridvall 57e5784c21 Move __stdcall/__cdecl to the right place.
2002-02-02 18:42:11 +00:00

451 lines
15 KiB
C
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/*
* 386-specific Win32 relay functions
*
* Copyright 1997 Alexandre Julliard
*/
#include "config.h"
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include "winnt.h"
#include "stackframe.h"
#include "module.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(relay);
char **debug_relay_excludelist = NULL, **debug_relay_includelist = NULL;
/***********************************************************************
* RELAY_ShowDebugmsgRelay
*
* Simple function to decide if a particular debugging message is
* wanted. Called from RELAY_CallFrom32 and from in if1632/relay.c
*/
int RELAY_ShowDebugmsgRelay(const char *func) {
if(debug_relay_excludelist || debug_relay_includelist) {
const char *term = strchr(func, ':');
char **listitem;
int len, len2, itemlen, show;
if(debug_relay_excludelist) {
show = 1;
listitem = debug_relay_excludelist;
} else {
show = 0;
listitem = debug_relay_includelist;
}
assert(term);
assert(strlen(term) > 2);
len = term - func;
len2 = strchr(func, '.') - func;
assert(len2 && len2 > 0 && len2 < 64);
term += 2;
for(; *listitem; listitem++) {
itemlen = strlen(*listitem);
if((itemlen == len && !strncasecmp(*listitem, func, len)) ||
(itemlen == len2 && !strncasecmp(*listitem, func, len2)) ||
!strcasecmp(*listitem, term)) {
show = !show;
break;
}
}
return show;
}
return 1;
}
#ifdef __i386__
typedef struct
{
BYTE call; /* 0xe8 call callfrom32 (relative) */
DWORD callfrom32 WINE_PACKED; /* RELAY_CallFrom32 relative addr */
BYTE ret; /* 0xc2 ret $n or 0xc3 ret */
WORD args; /* nb of args to remove from the stack */
void *orig; /* original entry point */
DWORD argtypes; /* argument types */
} DEBUG_ENTRY_POINT;
/***********************************************************************
* find_exported_name
*
* Find the name of an exported function.
*/
static const char *find_exported_name( const char *module,
IMAGE_EXPORT_DIRECTORY *exp, int ordinal )
{
int i;
const char *ret = NULL;
WORD *ordptr = (WORD *)(module + exp->AddressOfNameOrdinals);
for (i = 0; i < exp->NumberOfNames; i++, ordptr++)
if (*ordptr + exp->Base == ordinal) break;
if (i < exp->NumberOfNames)
ret = module + ((DWORD*)(module + exp->AddressOfNames))[i];
return ret;
}
/***********************************************************************
* get_entry_point
*
* Get the name of the DLL entry point corresponding to a relay address.
*/
static void get_entry_point( char *buffer, DEBUG_ENTRY_POINT *relay )
{
IMAGE_DATA_DIRECTORY *dir;
IMAGE_EXPORT_DIRECTORY *exp = NULL;
DEBUG_ENTRY_POINT *debug;
char *base = NULL;
const char *name;
int ordinal = 0;
WINE_MODREF *wm;
/* First find the module */
for (wm = MODULE_modref_list; wm; wm = wm->next)
{
if (!(wm->flags & WINE_MODREF_INTERNAL)) continue;
base = (char *)wm->module;
dir = &PE_HEADER(base)->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
if (!dir->Size) continue;
exp = (IMAGE_EXPORT_DIRECTORY *)(base + dir->VirtualAddress);
debug = (DEBUG_ENTRY_POINT *)((char *)exp + dir->Size);
if (debug <= relay && relay < debug + exp->NumberOfFunctions)
{
ordinal = relay - debug;
break;
}
}
/* Now find the function */
if ((name = find_exported_name( base, exp, ordinal + exp->Base )))
sprintf( buffer, "%s.%s", base + exp->Name, name );
else
sprintf( buffer, "%s.%ld", base + exp->Name, ordinal + exp->Base );
}
/***********************************************************************
* RELAY_PrintArgs
*/
static inline void RELAY_PrintArgs( int *args, int nb_args, unsigned int typemask )
{
while (nb_args--)
{
if ((typemask & 3) && HIWORD(*args))
{
if (typemask & 2)
DPRINTF( "%08x %s", *args, debugstr_w((LPWSTR)*args) );
else
DPRINTF( "%08x %s", *args, debugstr_a((LPCSTR)*args) );
}
else DPRINTF( "%08x", *args );
if (nb_args) DPRINTF( "," );
args++;
typemask >>= 2;
}
}
typedef LONGLONG (*LONGLONG_CPROC)();
typedef LONGLONG (WINAPI *LONGLONG_FARPROC)();
/***********************************************************************
* call_cdecl_function
*/
static LONGLONG call_cdecl_function( LONGLONG_CPROC func, int nb_args, const int *args )
{
LONGLONG ret;
switch(nb_args)
{
case 0: ret = func(); break;
case 1: ret = func(args[0]); break;
case 2: ret = func(args[0],args[1]); break;
case 3: ret = func(args[0],args[1],args[2]); break;
case 4: ret = func(args[0],args[1],args[2],args[3]); break;
case 5: ret = func(args[0],args[1],args[2],args[3],args[4]); break;
case 6: ret = func(args[0],args[1],args[2],args[3],args[4],
args[5]); break;
case 7: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6]); break;
case 8: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7]); break;
case 9: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8]); break;
case 10: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9]); break;
case 11: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10]); break;
case 12: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],
args[11]); break;
case 13: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12]); break;
case 14: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12],args[13]); break;
case 15: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12],args[13],args[14]); break;
case 16: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12],args[13],args[14],args[15]); break;
default:
ERR( "Unsupported nb of args %d\n", nb_args );
assert(FALSE);
}
return ret;
}
/***********************************************************************
* call_stdcall_function
*/
static LONGLONG call_stdcall_function( LONGLONG_FARPROC func, int nb_args, const int *args )
{
LONGLONG ret;
switch(nb_args)
{
case 0: ret = func(); break;
case 1: ret = func(args[0]); break;
case 2: ret = func(args[0],args[1]); break;
case 3: ret = func(args[0],args[1],args[2]); break;
case 4: ret = func(args[0],args[1],args[2],args[3]); break;
case 5: ret = func(args[0],args[1],args[2],args[3],args[4]); break;
case 6: ret = func(args[0],args[1],args[2],args[3],args[4],
args[5]); break;
case 7: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6]); break;
case 8: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7]); break;
case 9: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8]); break;
case 10: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9]); break;
case 11: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10]); break;
case 12: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],
args[11]); break;
case 13: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12]); break;
case 14: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12],args[13]); break;
case 15: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12],args[13],args[14]); break;
case 16: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9],args[10],args[11],
args[12],args[13],args[14],args[15]); break;
default:
ERR( "Unsupported nb of args %d\n", nb_args );
assert(FALSE);
}
return ret;
}
/***********************************************************************
* RELAY_CallFrom32
*
* Stack layout on entry to this function:
* ... ...
* (esp+12) arg2
* (esp+8) arg1
* (esp+4) ret_addr
* (esp) return addr to relay code
*/
static LONGLONG RELAY_CallFrom32( int ret_addr, ... )
{
LONGLONG ret;
char buffer[80];
BOOL ret64;
int *args = &ret_addr + 1;
/* Relay addr is the return address for this function */
BYTE *relay_addr = (BYTE *)__builtin_return_address(0);
DEBUG_ENTRY_POINT *relay = (DEBUG_ENTRY_POINT *)(relay_addr - 5);
WORD nb_args = relay->args / sizeof(int);
get_entry_point( buffer, relay );
DPRINTF( "%08lx:Call %s(", GetCurrentThreadId(), buffer );
RELAY_PrintArgs( args, nb_args, relay->argtypes );
DPRINTF( ") ret=%08x\n", ret_addr );
ret64 = (relay->argtypes & 0x80000000) && (nb_args < 16);
if (relay->ret == 0xc3) /* cdecl */
{
ret = call_cdecl_function( (LONGLONG_CPROC)relay->orig, nb_args, args );
}
else /* stdcall */
{
ret = call_stdcall_function( (LONGLONG_FARPROC)relay->orig, nb_args, args );
}
if (ret64)
DPRINTF( "%08lx:Ret %s() retval=%08x%08x ret=%08x\n",
GetCurrentThreadId(),
buffer, (UINT)(ret >> 32), (UINT)ret, ret_addr );
else
DPRINTF( "%08lx:Ret %s() retval=%08x ret=%08x\n",
GetCurrentThreadId(),
buffer, (UINT)ret, ret_addr );
return ret;
}
/***********************************************************************
* RELAY_CallFrom32Regs
*
* Stack layout (esp is context->Esp, not the current %esp):
*
* ...
* (esp+4) first arg
* (esp) return addr to caller
* (esp-4) return addr to DEBUG_ENTRY_POINT
* (esp-8) ptr to relay entry code for RELAY_CallFrom32Regs
* ... >128 bytes space free to be modified (ensured by the assembly glue)
*/
void WINAPI RELAY_DoCallFrom32Regs( CONTEXT86 *context )
{
char buffer[80];
int* args;
int args_copy[17];
BYTE *entry_point;
BYTE *relay_addr = *((BYTE **)context->Esp - 1);
DEBUG_ENTRY_POINT *relay = (DEBUG_ENTRY_POINT *)(relay_addr - 5);
WORD nb_args = (relay->args & ~0x8000) / sizeof(int);
/* remove extra stuff from the stack */
context->Eip = stack32_pop(context);
args = (int *)context->Esp;
if (relay->ret == 0xc2) /* stdcall */
context->Esp += nb_args * sizeof(int);
assert(TRACE_ON(relay));
entry_point = (BYTE *)relay->orig;
assert( *entry_point == 0xe8 /* lcall */ );
get_entry_point( buffer, relay );
DPRINTF( "%08lx:Call %s(", GetCurrentThreadId(), buffer );
RELAY_PrintArgs( args, nb_args, relay->argtypes );
DPRINTF( ") ret=%08lx fs=%04lx\n", context->Eip, context->SegFs );
DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
context->Eax, context->Ebx, context->Ecx,
context->Edx, context->Esi, context->Edi );
DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
context->Ebp, context->Esp, context->SegDs,
context->SegEs, context->SegGs, context->EFlags );
/* Now call the real function */
memcpy( args_copy, args, nb_args * sizeof(args[0]) );
args_copy[nb_args] = (int)context; /* append context argument */
if (relay->ret == 0xc3) /* cdecl */
{
call_cdecl_function( *(LONGLONG_CPROC *)(entry_point + 5), nb_args+1, args_copy );
}
else /* stdcall */
{
call_stdcall_function( *(LONGLONG_FARPROC *)(entry_point + 5), nb_args+1, args_copy );
}
DPRINTF( "%08lx:Ret %s() retval=%08lx ret=%08lx fs=%04lx\n",
GetCurrentThreadId(),
buffer, context->Eax, context->Eip, context->SegFs );
DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
context->Eax, context->Ebx, context->Ecx,
context->Edx, context->Esi, context->Edi );
DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
context->Ebp, context->Esp, context->SegDs,
context->SegEs, context->SegGs, context->EFlags );
}
void WINAPI RELAY_CallFrom32Regs(void);
__ASM_GLOBAL_FUNC( RELAY_CallFrom32Regs,
"call " __ASM_NAME("__wine_call_from_32_regs") "\n\t"
".long " __ASM_NAME("RELAY_DoCallFrom32Regs") ",0" );
/***********************************************************************
* RELAY_SetupDLL
*
* Setup relay debugging for a built-in dll.
*/
void RELAY_SetupDLL( const char *module )
{
IMAGE_DATA_DIRECTORY *dir;
IMAGE_EXPORT_DIRECTORY *exports;
DEBUG_ENTRY_POINT *debug;
DWORD *funcs;
int i;
const char *name, *dllname;
dir = &PE_HEADER(module)->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
if (!dir->Size) return;
exports = (IMAGE_EXPORT_DIRECTORY *)(module + dir->VirtualAddress);
debug = (DEBUG_ENTRY_POINT *)((char *)exports + dir->Size);
funcs = (DWORD *)(module + exports->AddressOfFunctions);
dllname = module + exports->Name;
for (i = 0; i < exports->NumberOfFunctions; i++, funcs++, debug++)
{
int on = 1;
if (!debug->call) continue; /* not a normal function */
if (debug->call != 0xe8 && debug->call != 0xe9) break; /* not a debug thunk at all */
if ((name = find_exported_name( module, exports, i + exports->Base )))
{
char buffer[200];
sprintf( buffer, "%s.%d: %s", dllname, i, name );
on = RELAY_ShowDebugmsgRelay(buffer);
}
if (on)
{
debug->call = 0xe8; /* call relative */
if (debug->args & 0x8000) /* register func */
debug->callfrom32 = (char *)RELAY_CallFrom32Regs - (char *)&debug->ret;
else
debug->callfrom32 = (char *)RELAY_CallFrom32 - (char *)&debug->ret;
}
else
{
debug->call = 0xe9; /* jmp relative */
debug->callfrom32 = (char *)debug->orig - (char *)&debug->ret;
}
debug->orig = (FARPROC)(module + (DWORD)*funcs);
*funcs = (char *)debug - module;
}
}
#else /* __i386__ */
void RELAY_SetupDLL( const char *module )
{
}
#endif /* __i386__ */
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