forked from Mirrors/wine-wine
465 lines
16 KiB
C
465 lines
16 KiB
C
/*
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* 386-specific Win32 relay functions
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*
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* Copyright 1997 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#include "winnt.h"
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#include "stackframe.h"
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#include "module.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(relay);
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char **debug_relay_excludelist = NULL, **debug_relay_includelist = NULL;
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/***********************************************************************
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* RELAY_ShowDebugmsgRelay
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*
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* Simple function to decide if a particular debugging message is
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* wanted. Called from RELAY_CallFrom32 and from in if1632/relay.c
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*/
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int RELAY_ShowDebugmsgRelay(const char *func) {
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if(debug_relay_excludelist || debug_relay_includelist) {
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const char *term = strchr(func, ':');
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char **listitem;
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int len, len2, itemlen, show;
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if(debug_relay_excludelist) {
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show = 1;
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listitem = debug_relay_excludelist;
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} else {
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show = 0;
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listitem = debug_relay_includelist;
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}
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assert(term);
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assert(strlen(term) > 2);
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len = term - func;
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len2 = strchr(func, '.') - func;
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assert(len2 && len2 > 0 && len2 < 64);
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term += 2;
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for(; *listitem; listitem++) {
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itemlen = strlen(*listitem);
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if((itemlen == len && !strncasecmp(*listitem, func, len)) ||
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(itemlen == len2 && !strncasecmp(*listitem, func, len2)) ||
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!strcasecmp(*listitem, term)) {
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show = !show;
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break;
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}
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}
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return show;
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}
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return 1;
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}
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#ifdef __i386__
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typedef struct
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{
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BYTE call; /* 0xe8 call callfrom32 (relative) */
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DWORD callfrom32 WINE_PACKED; /* RELAY_CallFrom32 relative addr */
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BYTE ret; /* 0xc2 ret $n or 0xc3 ret */
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WORD args; /* nb of args to remove from the stack */
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void *orig; /* original entry point */
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DWORD argtypes; /* argument types */
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} DEBUG_ENTRY_POINT;
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/***********************************************************************
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* find_exported_name
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*
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* Find the name of an exported function.
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*/
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static const char *find_exported_name( const char *module,
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IMAGE_EXPORT_DIRECTORY *exp, int ordinal )
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{
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int i;
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const char *ret = NULL;
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WORD *ordptr = (WORD *)(module + exp->AddressOfNameOrdinals);
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for (i = 0; i < exp->NumberOfNames; i++, ordptr++)
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if (*ordptr + exp->Base == ordinal) break;
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if (i < exp->NumberOfNames)
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ret = module + ((DWORD*)(module + exp->AddressOfNames))[i];
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return ret;
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}
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/***********************************************************************
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* get_entry_point
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*
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* Get the name of the DLL entry point corresponding to a relay address.
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*/
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static void get_entry_point( char *buffer, DEBUG_ENTRY_POINT *relay )
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{
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IMAGE_DATA_DIRECTORY *dir;
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IMAGE_EXPORT_DIRECTORY *exp = NULL;
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DEBUG_ENTRY_POINT *debug;
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char *base = NULL;
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const char *name;
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int ordinal = 0;
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WINE_MODREF *wm;
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/* First find the module */
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for (wm = MODULE_modref_list; wm; wm = wm->next)
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{
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if (!(wm->flags & WINE_MODREF_INTERNAL)) continue;
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base = (char *)wm->module;
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dir = &PE_HEADER(base)->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
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if (!dir->Size) continue;
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exp = (IMAGE_EXPORT_DIRECTORY *)(base + dir->VirtualAddress);
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debug = (DEBUG_ENTRY_POINT *)((char *)exp + dir->Size);
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if (debug <= relay && relay < debug + exp->NumberOfFunctions)
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{
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ordinal = relay - debug;
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break;
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}
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}
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/* Now find the function */
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if ((name = find_exported_name( base, exp, ordinal + exp->Base )))
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sprintf( buffer, "%s.%s", base + exp->Name, name );
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else
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sprintf( buffer, "%s.%ld", base + exp->Name, ordinal + exp->Base );
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}
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/***********************************************************************
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* RELAY_PrintArgs
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*/
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static inline void RELAY_PrintArgs( int *args, int nb_args, unsigned int typemask )
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{
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while (nb_args--)
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{
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if ((typemask & 3) && HIWORD(*args))
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{
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if (typemask & 2)
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DPRINTF( "%08x %s", *args, debugstr_w((LPWSTR)*args) );
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else
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DPRINTF( "%08x %s", *args, debugstr_a((LPCSTR)*args) );
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}
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else DPRINTF( "%08x", *args );
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if (nb_args) DPRINTF( "," );
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args++;
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typemask >>= 2;
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}
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}
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typedef LONGLONG (*LONGLONG_CPROC)();
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typedef LONGLONG (WINAPI *LONGLONG_FARPROC)();
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/***********************************************************************
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* call_cdecl_function
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*/
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static LONGLONG call_cdecl_function( LONGLONG_CPROC func, int nb_args, const int *args )
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{
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LONGLONG ret;
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switch(nb_args)
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{
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case 0: ret = func(); break;
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case 1: ret = func(args[0]); break;
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case 2: ret = func(args[0],args[1]); break;
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case 3: ret = func(args[0],args[1],args[2]); break;
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case 4: ret = func(args[0],args[1],args[2],args[3]); break;
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case 5: ret = func(args[0],args[1],args[2],args[3],args[4]); break;
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case 6: ret = func(args[0],args[1],args[2],args[3],args[4],
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args[5]); break;
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case 7: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6]); break;
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case 8: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7]); break;
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case 9: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8]); break;
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case 10: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9]); break;
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case 11: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10]); break;
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case 12: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],
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args[11]); break;
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case 13: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12]); break;
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case 14: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12],args[13]); break;
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case 15: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12],args[13],args[14]); break;
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case 16: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12],args[13],args[14],args[15]); break;
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default:
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ERR( "Unsupported nb of args %d\n", nb_args );
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assert(FALSE);
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}
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return ret;
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}
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/***********************************************************************
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* call_stdcall_function
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*/
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static LONGLONG call_stdcall_function( LONGLONG_FARPROC func, int nb_args, const int *args )
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{
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LONGLONG ret;
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switch(nb_args)
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{
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case 0: ret = func(); break;
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case 1: ret = func(args[0]); break;
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case 2: ret = func(args[0],args[1]); break;
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case 3: ret = func(args[0],args[1],args[2]); break;
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case 4: ret = func(args[0],args[1],args[2],args[3]); break;
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case 5: ret = func(args[0],args[1],args[2],args[3],args[4]); break;
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case 6: ret = func(args[0],args[1],args[2],args[3],args[4],
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args[5]); break;
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case 7: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6]); break;
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case 8: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7]); break;
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case 9: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8]); break;
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case 10: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9]); break;
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case 11: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10]); break;
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case 12: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],
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args[11]); break;
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case 13: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12]); break;
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case 14: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12],args[13]); break;
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case 15: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12],args[13],args[14]); break;
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case 16: ret = func(args[0],args[1],args[2],args[3],args[4],args[5],
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args[6],args[7],args[8],args[9],args[10],args[11],
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args[12],args[13],args[14],args[15]); break;
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default:
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ERR( "Unsupported nb of args %d\n", nb_args );
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assert(FALSE);
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}
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return ret;
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}
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/***********************************************************************
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* RELAY_CallFrom32
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*
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* Stack layout on entry to this function:
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* ... ...
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* (esp+12) arg2
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* (esp+8) arg1
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* (esp+4) ret_addr
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* (esp) return addr to relay code
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*/
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static LONGLONG RELAY_CallFrom32( int ret_addr, ... )
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{
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LONGLONG ret;
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char buffer[80];
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BOOL ret64;
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int *args = &ret_addr + 1;
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/* Relay addr is the return address for this function */
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BYTE *relay_addr = (BYTE *)__builtin_return_address(0);
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DEBUG_ENTRY_POINT *relay = (DEBUG_ENTRY_POINT *)(relay_addr - 5);
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WORD nb_args = relay->args / sizeof(int);
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get_entry_point( buffer, relay );
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DPRINTF( "%08lx:Call %s(", GetCurrentThreadId(), buffer );
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RELAY_PrintArgs( args, nb_args, relay->argtypes );
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DPRINTF( ") ret=%08x\n", ret_addr );
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ret64 = (relay->argtypes & 0x80000000) && (nb_args < 16);
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if (relay->ret == 0xc3) /* cdecl */
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{
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ret = call_cdecl_function( (LONGLONG_CPROC)relay->orig, nb_args, args );
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}
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else /* stdcall */
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{
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ret = call_stdcall_function( (LONGLONG_FARPROC)relay->orig, nb_args, args );
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}
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if (ret64)
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DPRINTF( "%08lx:Ret %s() retval=%08x%08x ret=%08x\n",
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GetCurrentThreadId(),
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buffer, (UINT)(ret >> 32), (UINT)ret, ret_addr );
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else
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DPRINTF( "%08lx:Ret %s() retval=%08x ret=%08x\n",
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GetCurrentThreadId(),
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buffer, (UINT)ret, ret_addr );
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return ret;
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}
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/***********************************************************************
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* RELAY_CallFrom32Regs
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*
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* Stack layout (esp is context->Esp, not the current %esp):
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*
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* ...
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* (esp+4) first arg
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* (esp) return addr to caller
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* (esp-4) return addr to DEBUG_ENTRY_POINT
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* (esp-8) ptr to relay entry code for RELAY_CallFrom32Regs
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* ... >128 bytes space free to be modified (ensured by the assembly glue)
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*/
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void WINAPI RELAY_DoCallFrom32Regs( CONTEXT86 *context )
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{
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char buffer[80];
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int* args;
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int args_copy[17];
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BYTE *entry_point;
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BYTE *relay_addr = *((BYTE **)context->Esp - 1);
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DEBUG_ENTRY_POINT *relay = (DEBUG_ENTRY_POINT *)(relay_addr - 5);
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WORD nb_args = (relay->args & ~0x8000) / sizeof(int);
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/* remove extra stuff from the stack */
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context->Eip = stack32_pop(context);
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args = (int *)context->Esp;
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if (relay->ret == 0xc2) /* stdcall */
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context->Esp += nb_args * sizeof(int);
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assert(TRACE_ON(relay));
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entry_point = (BYTE *)relay->orig;
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assert( *entry_point == 0xe8 /* lcall */ );
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get_entry_point( buffer, relay );
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DPRINTF( "%08lx:Call %s(", GetCurrentThreadId(), buffer );
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RELAY_PrintArgs( args, nb_args, relay->argtypes );
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DPRINTF( ") ret=%08lx fs=%04lx\n", context->Eip, context->SegFs );
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DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
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context->Eax, context->Ebx, context->Ecx,
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context->Edx, context->Esi, context->Edi );
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DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
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context->Ebp, context->Esp, context->SegDs,
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context->SegEs, context->SegGs, context->EFlags );
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/* Now call the real function */
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memcpy( args_copy, args, nb_args * sizeof(args[0]) );
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args_copy[nb_args] = (int)context; /* append context argument */
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if (relay->ret == 0xc3) /* cdecl */
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{
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call_cdecl_function( *(LONGLONG_CPROC *)(entry_point + 5), nb_args+1, args_copy );
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}
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else /* stdcall */
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{
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call_stdcall_function( *(LONGLONG_FARPROC *)(entry_point + 5), nb_args+1, args_copy );
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}
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DPRINTF( "%08lx:Ret %s() retval=%08lx ret=%08lx fs=%04lx\n",
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GetCurrentThreadId(),
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buffer, context->Eax, context->Eip, context->SegFs );
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DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
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context->Eax, context->Ebx, context->Ecx,
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context->Edx, context->Esi, context->Edi );
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DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
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context->Ebp, context->Esp, context->SegDs,
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context->SegEs, context->SegGs, context->EFlags );
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}
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void WINAPI RELAY_CallFrom32Regs(void);
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__ASM_GLOBAL_FUNC( RELAY_CallFrom32Regs,
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"call " __ASM_NAME("__wine_call_from_32_regs") "\n\t"
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".long " __ASM_NAME("RELAY_DoCallFrom32Regs") ",0" );
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/***********************************************************************
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* RELAY_SetupDLL
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*
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* Setup relay debugging for a built-in dll.
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*/
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void RELAY_SetupDLL( const char *module )
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{
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IMAGE_DATA_DIRECTORY *dir;
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IMAGE_EXPORT_DIRECTORY *exports;
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DEBUG_ENTRY_POINT *debug;
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DWORD *funcs;
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int i;
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const char *name, *dllname;
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dir = &PE_HEADER(module)->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
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if (!dir->Size) return;
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exports = (IMAGE_EXPORT_DIRECTORY *)(module + dir->VirtualAddress);
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debug = (DEBUG_ENTRY_POINT *)((char *)exports + dir->Size);
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funcs = (DWORD *)(module + exports->AddressOfFunctions);
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dllname = module + exports->Name;
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for (i = 0; i < exports->NumberOfFunctions; i++, funcs++, debug++)
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{
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int on = 1;
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if (!debug->call) continue; /* not a normal function */
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if (debug->call != 0xe8 && debug->call != 0xe9) break; /* not a debug thunk at all */
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if ((name = find_exported_name( module, exports, i + exports->Base )))
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{
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char buffer[200];
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sprintf( buffer, "%s.%d: %s", dllname, i, name );
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on = RELAY_ShowDebugmsgRelay(buffer);
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}
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if (on)
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{
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debug->call = 0xe8; /* call relative */
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if (debug->args & 0x8000) /* register func */
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debug->callfrom32 = (char *)RELAY_CallFrom32Regs - (char *)&debug->ret;
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else
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debug->callfrom32 = (char *)RELAY_CallFrom32 - (char *)&debug->ret;
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}
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else
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{
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debug->call = 0xe9; /* jmp relative */
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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__ */
|