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Sweden-Number/if1632/relay.c

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/*
* Copyright 1993 Robert J. Amstadt
* Copyright 1995 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "wine/winbase16.h"
#include "winnt.h"
#include "module.h"
#include "stackframe.h"
#include "selectors.h"
#include "builtin16.h"
#include "syslevel.h"
#include "wine/library.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(relay);
/***********************************************************************
* RELAY_Init
*/
BOOL RELAY_Init(void)
{
#ifdef __i386__
WORD codesel;
/* Allocate the code selector for CallTo16 routines */
extern void Call16_Ret_Start(), Call16_Ret_End();
extern void CallTo16_Ret();
extern void CALL32_CBClient_Ret();
extern void CALL32_CBClientEx_Ret();
extern SEGPTR CallTo16_RetAddr;
extern DWORD CallTo16_DataSelector;
extern SEGPTR CALL32_CBClient_RetAddr;
extern SEGPTR CALL32_CBClientEx_RetAddr;
codesel = SELECTOR_AllocBlock( (void *)Call16_Ret_Start,
(char *)Call16_Ret_End - (char *)Call16_Ret_Start,
WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT );
if (!codesel) return FALSE;
/* Patch the return addresses for CallTo16 routines */
CallTo16_DataSelector = wine_get_ds();
CallTo16_RetAddr =
MAKESEGPTR( codesel, (char*)CallTo16_Ret - (char*)Call16_Ret_Start );
CALL32_CBClient_RetAddr =
MAKESEGPTR( codesel, (char*)CALL32_CBClient_Ret - (char*)Call16_Ret_Start );
CALL32_CBClientEx_RetAddr =
MAKESEGPTR( codesel, (char*)CALL32_CBClientEx_Ret - (char*)Call16_Ret_Start );
#endif
return TRUE;
}
/*
* Stubs for the CallTo16/CallFrom16 routines on non-Intel architectures
* (these will never be called but need to be present to satisfy the linker ...)
*/
#ifndef __i386__
/***********************************************************************
* wine_call_to_16_word (KERNEL32.@)
*/
WORD WINAPI wine_call_to_16_word( FARPROC16 target, INT nArgs )
{
assert( FALSE );
}
/***********************************************************************
* wine_call_to_16_long (KERNEL32.@)
*/
LONG WINAPI wine_call_to_16_long( FARPROC16 target, INT nArgs )
{
assert( FALSE );
}
/***********************************************************************
* wine_call_to_16_regs_short (KERNEL32.@)
*/
void WINAPI wine_call_to_16_regs_short( CONTEXT86 *context, INT nArgs )
{
assert( FALSE );
}
/***********************************************************************
* wine_call_to_16_regs_long (KERNEL32.@)
*/
void WINAPI wine_call_to_16_regs_long ( CONTEXT86 *context, INT nArgs )
{
assert( FALSE );
}
/***********************************************************************
* __wine_call_from_16_word (KERNEL32.@)
*/
WORD __wine_call_from_16_word()
{
assert( FALSE );
}
/***********************************************************************
* __wine_call_from_16_long (KERNEL32.@)
*/
LONG __wine_call_from_16_long()
{
assert( FALSE );
}
/***********************************************************************
* __wine_call_from_16_regs (KERNEL32.@)
*/
void __wine_call_from_16_regs()
{
assert( FALSE );
}
DWORD WINAPI CALL32_CBClient( FARPROC proc, LPWORD args, DWORD *esi )
{ assert( FALSE ); }
DWORD WINAPI CALL32_CBClientEx( FARPROC proc, LPWORD args, DWORD *esi, INT *nArgs )
{ assert( FALSE ); }
#endif
/***********************************************************************
* RELAY_ShowDebugmsgRelay
*
* Simple function to decide if a particular debugging message is
* wanted.
*/
static int RELAY_ShowDebugmsgRelay(const char *func)
{
/* from relay32/relay386.c */
extern const char **debug_relay_excludelist,**debug_relay_includelist;
if(debug_relay_excludelist || debug_relay_includelist) {
const char *term = strchr(func, ':');
const 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;
}
/***********************************************************************
* get_entry_point
*
* Return the ordinal, name, and type info corresponding to a CS:IP address.
*/
static const CALLFROM16 *get_entry_point( STACK16FRAME *frame, LPSTR name, WORD *pOrd )
{
WORD i, max_offset;
register BYTE *p;
NE_MODULE *pModule;
ET_BUNDLE *bundle;
ET_ENTRY *entry;
if (!(pModule = NE_GetPtr( FarGetOwner16( GlobalHandle16( frame->module_cs ) ))))
return NULL;
max_offset = 0;
*pOrd = 0;
bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
do
{
entry = (ET_ENTRY *)((BYTE *)bundle+6);
for (i = bundle->first + 1; i <= bundle->last; i++)
{
if ((entry->offs < frame->entry_ip)
&& (entry->segnum == 1) /* code segment ? */
&& (entry->offs >= max_offset))
{
max_offset = entry->offs;
*pOrd = i;
}
entry++;
}
} while ( (bundle->next)
&& (bundle = (ET_BUNDLE *)((BYTE *)pModule+bundle->next)));
/* Search for the name in the resident names table */
/* (built-in modules have no non-resident table) */
p = (BYTE *)pModule + pModule->name_table;
while (*p)
{
p += *p + 1 + sizeof(WORD);
if (*(WORD *)(p + *p + 1) == *pOrd) break;
}
sprintf( name, "%.*s.%d: %.*s",
*((BYTE *)pModule + pModule->name_table),
(char *)pModule + pModule->name_table + 1,
*pOrd, *p, (char *)(p + 1) );
/* Retrieve entry point call structure */
p = MapSL( MAKESEGPTR( frame->module_cs, frame->callfrom_ip ) );
/* p now points to lret, get the start of CALLFROM16 structure */
return (CALLFROM16 *)(p - (BYTE *)&((CALLFROM16 *)0)->lret);
}
/***********************************************************************
* RELAY_DebugCallFrom16
*/
void RELAY_DebugCallFrom16( CONTEXT86 *context )
{
STACK16FRAME *frame;
WORD ordinal;
char *args16, funstr[80];
const CALLFROM16 *call;
int i;
if (!TRACE_ON(relay)) return;
frame = CURRENT_STACK16;
call = get_entry_point( frame, funstr, &ordinal );
if (!call) return; /* happens for the two snoop register relays */
if (!RELAY_ShowDebugmsgRelay(funstr)) return;
DPRINTF( "%08lx:Call %s(",GetCurrentThreadId(),funstr);
VA_START16( args16 );
if (call->lret == 0xcb66) /* cdecl */
{
for (i = 0; i < 20; i++)
{
int type = (call->arg_types[i / 10] >> (3 * (i % 10))) & 7;
if (type == ARG_NONE) break;
if (i) DPRINTF( "," );
switch(type)
{
case ARG_WORD:
case ARG_SWORD:
DPRINTF( "%04x", *(WORD *)args16 );
args16 += sizeof(WORD);
break;
case ARG_LONG:
DPRINTF( "%08x", *(int *)args16 );
args16 += sizeof(int);
break;
case ARG_PTR:
DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
args16 += sizeof(SEGPTR);
break;
case ARG_STR:
DPRINTF( "%08x %s", *(int *)args16,
debugstr_a( MapSL(*(SEGPTR *)args16 )));
args16 += sizeof(int);
break;
case ARG_SEGSTR:
DPRINTF( "%04x:%04x %s", *(WORD *)(args16+2), *(WORD *)args16,
debugstr_a( MapSL(*(SEGPTR *)args16 )) );
args16 += sizeof(SEGPTR);
break;
default:
break;
}
}
}
else /* not cdecl */
{
/* Start with the last arg */
args16 += call->nArgs;
for (i = 0; i < 20; i++)
{
int type = (call->arg_types[i / 10] >> (3 * (i % 10))) & 7;
if (type == ARG_NONE) break;
if (i) DPRINTF( "," );
switch(type)
{
case ARG_WORD:
case ARG_SWORD:
args16 -= sizeof(WORD);
DPRINTF( "%04x", *(WORD *)args16 );
break;
case ARG_LONG:
args16 -= sizeof(int);
DPRINTF( "%08x", *(int *)args16 );
break;
case ARG_PTR:
args16 -= sizeof(SEGPTR);
DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
break;
case ARG_STR:
args16 -= sizeof(int);
DPRINTF( "%08x %s", *(int *)args16,
debugstr_a( MapSL(*(SEGPTR *)args16 )));
break;
case ARG_SEGSTR:
args16 -= sizeof(SEGPTR);
DPRINTF( "%04x:%04x %s", *(WORD *)(args16+2), *(WORD *)args16,
debugstr_a( MapSL(*(SEGPTR *)args16 )) );
break;
default:
break;
}
}
}
DPRINTF( ") ret=%04x:%04x ds=%04x\n", frame->cs, frame->ip, frame->ds );
VA_END16( args16 );
if (call->arg_types[0] & ARG_REGISTER)
DPRINTF(" AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
AX_reg(context), BX_reg(context), CX_reg(context),
DX_reg(context), SI_reg(context), DI_reg(context),
(WORD)context->SegEs, context->EFlags );
SYSLEVEL_CheckNotLevel( 2 );
}
/***********************************************************************
* RELAY_DebugCallFrom16Ret
*/
void RELAY_DebugCallFrom16Ret( CONTEXT86 *context, int ret_val )
{
STACK16FRAME *frame;
WORD ordinal;
char funstr[80];
const CALLFROM16 *call;
if (!TRACE_ON(relay)) return;
frame = CURRENT_STACK16;
call = get_entry_point( frame, funstr, &ordinal );
if (!call) return;
if (!RELAY_ShowDebugmsgRelay(funstr)) return;
DPRINTF( "%08lx:Ret %s() ",GetCurrentThreadId(),funstr);
if (call->arg_types[0] & ARG_REGISTER)
{
DPRINTF("retval=none ret=%04x:%04x ds=%04x\n",
(WORD)context->SegCs, LOWORD(context->Eip), (WORD)context->SegDs);
DPRINTF(" AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
AX_reg(context), BX_reg(context), CX_reg(context),
DX_reg(context), SI_reg(context), DI_reg(context),
(WORD)context->SegEs, context->EFlags );
}
else if (call->arg_types[0] & ARG_RET16)
{
DPRINTF( "retval=%04x ret=%04x:%04x ds=%04x\n",
ret_val & 0xffff, frame->cs, frame->ip, frame->ds );
}
else
{
DPRINTF( "retval=%08x ret=%04x:%04x ds=%04x\n",
ret_val, frame->cs, frame->ip, frame->ds );
}
SYSLEVEL_CheckNotLevel( 2 );
}
/***********************************************************************
* RELAY_DebugCallTo16
*
* 'target' contains either the function to call (normal CallTo16)
* or a pointer to the CONTEXT86 struct (register CallTo16).
* 'nb_args' is the number of argument bytes on the 16-bit stack;
* 'reg_func' specifies whether we have a register CallTo16 or not.
*/
void RELAY_DebugCallTo16( LPVOID target, int nb_args, BOOL reg_func )
{
WORD *stack16;
TEB *teb;
if (!TRACE_ON(relay)) return;
teb = NtCurrentTeb();
stack16 = (WORD *)THREAD_STACK16(teb);
nb_args /= sizeof(WORD);
if ( reg_func )
{
CONTEXT86 *context = (CONTEXT86 *)target;
DPRINTF("%08lx:CallTo16(func=%04lx:%04x,ds=%04lx",
GetCurrentThreadId(),
context->SegCs, LOWORD(context->Eip), context->SegDs );
while (nb_args--) DPRINTF( ",%04x", *--stack16 );
DPRINTF(") ss:sp=%04x:%04x", SELECTOROF(teb->cur_stack),
OFFSETOF(teb->cur_stack) );
DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x bp=%04x es=%04x fs=%04x\n",
AX_reg(context), BX_reg(context), CX_reg(context),
DX_reg(context), SI_reg(context), DI_reg(context),
BP_reg(context), (WORD)context->SegEs, (WORD)context->SegFs );
}
else
{
DPRINTF("%08lx:CallTo16(func=%04x:%04x,ds=%04x",
GetCurrentThreadId(),
HIWORD(target), LOWORD(target), SELECTOROF(teb->cur_stack) );
while (nb_args--) DPRINTF( ",%04x", *--stack16 );
DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(teb->cur_stack),
OFFSETOF(teb->cur_stack) );
}
SYSLEVEL_CheckNotLevel( 2 );
}
/***********************************************************************
* RELAY_DebugCallTo16Ret
*/
void RELAY_DebugCallTo16Ret( BOOL reg_func, int ret_val )
{
if (!TRACE_ON(relay)) return;
if (!reg_func)
{
DPRINTF("%08lx:RetFrom16() ss:sp=%04x:%04x retval=%08x\n",
GetCurrentThreadId(),
SELECTOROF(NtCurrentTeb()->cur_stack),
OFFSETOF(NtCurrentTeb()->cur_stack), ret_val);
}
else
{
CONTEXT86 *context = (CONTEXT86 *)ret_val;
DPRINTF("%08lx:RetFrom16() ss:sp=%04x:%04x ",
GetCurrentThreadId(),
SELECTOROF(NtCurrentTeb()->cur_stack),
OFFSETOF(NtCurrentTeb()->cur_stack));
DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x bp=%04x sp=%04x\n",
AX_reg(context), BX_reg(context), CX_reg(context),
DX_reg(context), BP_reg(context), LOWORD(context->Esp));
}
SYSLEVEL_CheckNotLevel( 2 );
}
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