301 lines
12 KiB
C
301 lines
12 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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#include <assert.h>
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#include <string.h>
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#include "winnt.h"
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#include "builtin32.h"
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#include "selectors.h"
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#include "stackframe.h"
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#include "debugstr.h"
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#include "main.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(relay)
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char **debug_relay_excludelist = NULL, **debug_relay_includelist = NULL;
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#ifdef __i386__
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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 && !strncmp(*listitem, func, len)) ||
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(itemlen == len2 && !strncmp(*listitem, func, len2)) ||
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!strcmp(*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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/***********************************************************************
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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 L%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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/***********************************************************************
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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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int RELAY_CallFrom32( int ret_addr, ... )
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{
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int ret;
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char buffer[80];
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unsigned int typemask;
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FARPROC func;
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WORD fs;
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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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WORD nb_args = *(WORD *)(relay_addr + 1) / sizeof(int);
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assert(TRACE_ON(relay));
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func = (FARPROC)BUILTIN32_GetEntryPoint( buffer, relay_addr - 5, &typemask );
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DPRINTF( "Call %s(", buffer );
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RELAY_PrintArgs( args, nb_args, typemask );
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GET_FS( fs );
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DPRINTF( ") ret=%08x fs=%04x\n", ret_addr, fs );
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if (*relay_addr == 0xc3) /* cdecl */
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{
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LRESULT (*cfunc)() = (LRESULT(*)())func;
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switch(nb_args)
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{
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case 0: ret = cfunc(); break;
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case 1: ret = cfunc(args[0]); break;
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case 2: ret = cfunc(args[0],args[1]); break;
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case 3: ret = cfunc(args[0],args[1],args[2]); break;
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case 4: ret = cfunc(args[0],args[1],args[2],args[3]); break;
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case 5: ret = cfunc(args[0],args[1],args[2],args[3],args[4]); break;
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case 6: ret = cfunc(args[0],args[1],args[2],args[3],args[4],
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args[5]); break;
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case 7: ret = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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 = cfunc(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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}
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else /* stdcall */
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{
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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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}
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DPRINTF( "Ret %s() retval=%08x ret=%08x fs=%04x\n",
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buffer, ret, ret_addr, fs );
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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 ESP_reg(context), 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 REGS_FUNC(RELAY_CallFrom32Regs)( CONTEXT *context )
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{
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unsigned int typemask;
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char buffer[80];
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int* args;
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FARPROC func;
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BYTE *entry_point;
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BYTE *relay_addr = *((BYTE **)ESP_reg(context) - 1);
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WORD nb_args = *(WORD *)(relay_addr + 1) / sizeof(int);
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/* remove extra stuff from the stack */
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EIP_reg(context) = STACK32_POP(context);
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args = (int *)ESP_reg(context);
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ESP_reg(context) += 4 * nb_args;
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assert(TRACE_ON(relay));
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entry_point = (BYTE *)BUILTIN32_GetEntryPoint( buffer, relay_addr - 5, &typemask );
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assert( *entry_point == 0xe8 /* lcall */ );
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func = *(FARPROC *)(entry_point + 5);
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DPRINTF( "Call %s(", buffer );
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RELAY_PrintArgs( args, nb_args, typemask );
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DPRINTF( ") ret=%08lx fs=%04lx\n", EIP_reg(context), FS_reg(context) );
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DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
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EAX_reg(context), EBX_reg(context), ECX_reg(context),
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EDX_reg(context), ESI_reg(context), EDI_reg(context) );
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DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
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EBP_reg(context), ESP_reg(context), DS_reg(context),
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ES_reg(context), GS_reg(context), EFL_reg(context) );
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/* Now call the real function */
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switch(nb_args)
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{
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case 0: func(context); break;
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case 1: func(args[0],context); break;
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case 2: func(args[0],args[1],context); break;
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case 3: func(args[0],args[1],args[2],context); break;
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case 4: func(args[0],args[1],args[2],args[3],context); break;
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case 5: func(args[0],args[1],args[2],args[3],args[4],context); break;
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case 6: func(args[0],args[1],args[2],args[3],args[4],args[5],context); break;
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case 7: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],context); break;
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case 8: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],context); break;
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case 9: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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context); break;
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case 10: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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args[9],context); break;
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case 11: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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args[9],args[10],context); break;
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case 12: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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args[9],args[10],args[11],context); break;
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case 13: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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args[9],args[10],args[11],args[12],context); break;
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case 14: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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args[9],args[10],args[11],args[12],args[13],context); break;
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case 15: func(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],
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args[9],args[10],args[11],args[12],args[13],args[14],context); break;
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case 16: func(args[0],args[1],args[2],args[3],args[4],args[5], args[6],args[7],args[8],
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args[9],args[10],args[11],args[12],args[13],args[14],args[15],context); 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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DPRINTF( "Ret %s() retval=%08lx ret=%08lx fs=%04lx\n",
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buffer, EAX_reg(context), EIP_reg(context), FS_reg(context) );
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DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
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EAX_reg(context), EBX_reg(context), ECX_reg(context),
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EDX_reg(context), ESI_reg(context), EDI_reg(context) );
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DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx gs=%04lx flags=%08lx\n",
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EBP_reg(context), ESP_reg(context), DS_reg(context),
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ES_reg(context), GS_reg(context), EFL_reg(context) );
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}
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#else /* __i386__ */
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REGS_ENTRYPOINT(RELAY_CallFrom32Regs) { }
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#endif /* __i386__ */
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