| /* |
| * 386-specific Win32 relay functions |
| * |
| * Copyright 1997 Alexandre Julliard |
| */ |
| |
| |
| #include <assert.h> |
| #include <string.h> |
| #include <stdio.h> |
| |
| #include "config.h" |
| #include "winnt.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 && !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 = PROCESS_Current()->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 */ |
| |
| 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; |
| } |
| } |
| |
| |
| typedef LONGLONG WINAPI (*LONGLONG_FARPROC)(); |
| |
| /*********************************************************************** |
| * 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( "Call %s(", buffer ); |
| RELAY_PrintArgs( args, nb_args, relay->argtypes ); |
| DPRINTF( ") ret=%08x fs=%04x\n", ret_addr, __get_fs() ); |
| ret64 = (relay->argtypes & 0x80000000) && (nb_args < 16); |
| |
| /* the user driver functions may be called with the window lock held */ |
| if (memcmp( buffer, "x11drv.", 7 ) && memcmp( buffer, "ttydrv.", 7 )) |
| SYSLEVEL_CheckNotLevel( 2 ); |
| |
| if (relay->ret == 0xc3) /* cdecl */ |
| { |
| LONGLONG (*cfunc)() = 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 */ |
| { |
| LONGLONG_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); |
| } |
| } |
| if (ret64) |
| DPRINTF( "Ret %s() retval=%08x%08x ret=%08x fs=%04x\n", |
| buffer, (UINT)(ret >> 32), (UINT)ret, ret_addr, __get_fs() ); |
| else |
| DPRINTF( "Ret %s() retval=%08x ret=%08x fs=%04x\n", |
| buffer, (UINT)ret, ret_addr, __get_fs() ); |
| |
| if (memcmp( buffer, "x11drv.", 7 ) && memcmp( buffer, "ttydrv.", 7 )) |
| SYSLEVEL_CheckNotLevel( 2 ); |
| |
| 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 ); |
| 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 **)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; |
| context->Esp += 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", 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 ); |
| |
| 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, 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 ); |
| |
| 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 (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__ */ |
