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wine/relay32/relay386.c
Alexandre Julliard 246c360631 Reserve space for the PE header at the start of the .so file. 
Store the export table inside the data section so that sections can be
properly aligned.
Build the relay function table directly in the .spec.c file.
Moved relay debugging functions to relay386.c.
2000-05-10 03:48:00 +00:00

443 lines
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/*
* 386-specific Win32 relay functions
*
* Copyright 1997 Alexandre Julliard
*/
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include "winnt.h"
#include "builtin32.h"
#include "selectors.h"
#include "stackframe.h"
#include "syslevel.h"
#include "main.h"
#include "module.h"
#include "process.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 && !lstrncmpiA(*listitem, func, len)) ||
(itemlen == len2 && !lstrncmpiA(*listitem, func, len2)) ||
!lstrcmpiA(*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 */
FARPROC 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 = PROCESS_Current()->modref_list; wm; wm = wm->next)
{
if (wm->type != MODULE32_PE) continue;
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 */
name = find_exported_name( base, exp, ordinal + exp->Base );
sprintf( buffer, "%s.%ld: %s", base + exp->Name, ordinal + exp->Base, name ? name : "@" );
}
/***********************************************************************
* 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;
}
}
/***********************************************************************
* 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 int RELAY_CallFrom32( int ret_addr, ... )
{
int ret;
char buffer[80];
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( "Call %s(", buffer );
RELAY_PrintArgs( args, nb_args, relay->argtypes );
DPRINTF( ") ret=%08x fs=%04x\n", ret_addr, __get_fs() );
SYSLEVEL_CheckNotLevel( 2 );
if (relay->ret == 0xc3) /* cdecl */
{
LRESULT (*cfunc)() = (LRESULT(*)())relay->orig;
switch(nb_args)
{
case 0: ret = cfunc(); break;
case 1: ret = cfunc(args[0]); break;
case 2: ret = cfunc(args[0],args[1]); break;
case 3: ret = cfunc(args[0],args[1],args[2]); break;
case 4: ret = cfunc(args[0],args[1],args[2],args[3]); break;
case 5: ret = cfunc(args[0],args[1],args[2],args[3],args[4]); break;
case 6: ret = cfunc(args[0],args[1],args[2],args[3],args[4],
args[5]); break;
case 7: ret = cfunc(args[0],args[1],args[2],args[3],args[4],args[5],
args[6]); break;
case 8: ret = cfunc(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7]); break;
case 9: ret = cfunc(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8]); break;
case 10: ret = cfunc(args[0],args[1],args[2],args[3],args[4],args[5],
args[6],args[7],args[8],args[9]); break;
case 11: ret = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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);
}
}
else /* stdcall */
{
FARPROC func = relay->orig;
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);
}
}
DPRINTF( "Ret %s() retval=%08x ret=%08x fs=%04x\n",
buffer, ret, ret_addr, __get_fs() );
SYSLEVEL_CheckNotLevel( 2 );
return ret;
}
/***********************************************************************
* RELAY_CallFrom32Regs
*
* Stack layout (esp is ESP_reg(context), 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 );
DEFINE_REGS_ENTRYPOINT_0( RELAY_CallFrom32Regs, RELAY_DoCallFrom32Regs )
void WINAPI RELAY_DoCallFrom32Regs( CONTEXT86 *context )
{
char buffer[80];
int* args;
FARPROC func;
BYTE *entry_point;
BYTE *relay_addr = *((BYTE **)ESP_reg(context) - 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 */
EIP_reg(context) = stack32_pop(context);
args = (int *)ESP_reg(context);
ESP_reg(context) += 4 * nb_args;
assert(TRACE_ON(relay));
entry_point = (BYTE *)relay->orig;
assert( *entry_point == 0xe8 /* lcall */ );
func = *(FARPROC *)(entry_point + 5);
get_entry_point( buffer, relay );
DPRINTF( "Call %s(", buffer );
RELAY_PrintArgs( args, nb_args, relay->argtypes );
DPRINTF( ") ret=%08lx fs=%04lx\n", EIP_reg(context), FS_reg(context) );
DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
EAX_reg(context), EBX_reg(context), ECX_reg(context),
EDX_reg(context), ESI_reg(context), EDI_reg(context) );
DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
EBP_reg(context), ESP_reg(context), DS_reg(context),
ES_reg(context), GS_reg(context), EFL_reg(context) );
SYSLEVEL_CheckNotLevel( 2 );
/* Now call the real function */
switch(nb_args)
{
case 0: func(context); break;
case 1: func(args[0],context); break;
case 2: func(args[0],args[1],context); break;
case 3: func(args[0],args[1],args[2],context); break;
case 4: func(args[0],args[1],args[2],args[3],context); break;
case 5: func(args[0],args[1],args[2],args[3],args[4],context); break;
case 6: func(args[0],args[1],args[2],args[3],args[4],args[5],context); break;
case 7: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],context); break;
case 8: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],context); break;
case 9: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
context); break;
case 10: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
args[9],context); break;
case 11: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
args[9],args[10],context); break;
case 12: 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],context); break;
case 13: 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],context); break;
case 14: 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],context); break;
case 15: 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],context); break;
case 16: 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],context); break;
default:
ERR( "Unsupported nb of args %d\n", nb_args );
assert(FALSE);
}
DPRINTF( "Ret %s() retval=%08lx ret=%08lx fs=%04lx\n",
buffer, EAX_reg(context), EIP_reg(context), FS_reg(context) );
DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
EAX_reg(context), EBX_reg(context), ECX_reg(context),
EDX_reg(context), ESI_reg(context), EDI_reg(context) );
DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
EBP_reg(context), ESP_reg(context), DS_reg(context),
ES_reg(context), GS_reg(context), EFL_reg(context) );
SYSLEVEL_CheckNotLevel( 2 );
}
/***********************************************************************
* 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 ((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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