746 lines
25 KiB
C
746 lines
25 KiB
C
/*
|
|
* Copyright 1993 Robert J. Amstadt
|
|
* Copyright 1995 Alexandre Julliard
|
|
* Copyright 2002 Jukka Heinonen
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "wine/winbase16.h"
|
|
#include "winternl.h"
|
|
#include "kernel16_private.h"
|
|
#include "dosexe.h"
|
|
#include "wine/unicode.h"
|
|
#include "wine/library.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(relay);
|
|
|
|
/*
|
|
* Magic DWORD used to check stack integrity.
|
|
*/
|
|
#define RELAY_MAGIC 0xabcdef00
|
|
|
|
/*
|
|
* Memory block for temporary 16-bit stacks used with relay calls.
|
|
*/
|
|
typedef struct {
|
|
DWORD inuse; /* non-zero if stack block is in use */
|
|
DWORD eip; /* saved ip */
|
|
DWORD seg_cs; /* saved cs */
|
|
DWORD esp; /* saved sp */
|
|
DWORD seg_ss; /* saved ss */
|
|
DWORD stack_bottom; /* guard dword */
|
|
BYTE stack[256-7*4]; /* 16-bit stack */
|
|
DWORD stack_top; /* guard dword */
|
|
} RELAY_Stack16;
|
|
|
|
|
|
static const WCHAR **debug_relay_excludelist;
|
|
static const WCHAR **debug_relay_includelist;
|
|
static const WCHAR **debug_snoop_excludelist;
|
|
static const WCHAR **debug_snoop_includelist;
|
|
|
|
/* compare an ASCII and a Unicode string without depending on the current codepage */
|
|
static inline int strcmpiAW( const char *strA, const WCHAR *strW )
|
|
{
|
|
while (*strA && (toupperW((unsigned char)*strA) == toupperW(*strW))) { strA++; strW++; }
|
|
return toupperW((unsigned char)*strA) - toupperW(*strW);
|
|
}
|
|
|
|
/* compare an ASCII and a Unicode string without depending on the current codepage */
|
|
static inline int strncmpiAW( const char *strA, const WCHAR *strW, int n )
|
|
{
|
|
int ret = 0;
|
|
for ( ; n > 0; n--, strA++, strW++)
|
|
if ((ret = toupperW((unsigned char)*strA) - toupperW(*strW)) || !*strA) break;
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* build_list
|
|
*
|
|
* Build a function list from a ';'-separated string.
|
|
*/
|
|
static const WCHAR **build_list( const WCHAR *buffer )
|
|
{
|
|
int count = 1;
|
|
const WCHAR *p = buffer;
|
|
const WCHAR **ret;
|
|
|
|
while ((p = strchrW( p, ';' )))
|
|
{
|
|
count++;
|
|
p++;
|
|
}
|
|
/* allocate count+1 pointers, plus the space for a copy of the string */
|
|
if ((ret = RtlAllocateHeap( GetProcessHeap(), 0,
|
|
(count+1) * sizeof(WCHAR*) + (strlenW(buffer)+1) * sizeof(WCHAR) )))
|
|
{
|
|
WCHAR *str = (WCHAR *)(ret + count + 1);
|
|
WCHAR *p = str;
|
|
|
|
strcpyW( str, buffer );
|
|
count = 0;
|
|
for (;;)
|
|
{
|
|
ret[count++] = p;
|
|
if (!(p = strchrW( p, ';' ))) break;
|
|
*p++ = 0;
|
|
}
|
|
ret[count++] = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RELAY16_InitDebugLists
|
|
*
|
|
* Build the relay include/exclude function lists.
|
|
*/
|
|
void RELAY16_InitDebugLists(void)
|
|
{
|
|
OBJECT_ATTRIBUTES attr;
|
|
UNICODE_STRING name;
|
|
char buffer[1024];
|
|
HANDLE root, hkey;
|
|
DWORD count;
|
|
WCHAR *str;
|
|
static const WCHAR configW[] = {'S','o','f','t','w','a','r','e','\\',
|
|
'W','i','n','e','\\',
|
|
'D','e','b','u','g',0};
|
|
static const WCHAR RelayIncludeW[] = {'R','e','l','a','y','I','n','c','l','u','d','e',0};
|
|
static const WCHAR RelayExcludeW[] = {'R','e','l','a','y','E','x','c','l','u','d','e',0};
|
|
static const WCHAR SnoopIncludeW[] = {'S','n','o','o','p','I','n','c','l','u','d','e',0};
|
|
static const WCHAR SnoopExcludeW[] = {'S','n','o','o','p','E','x','c','l','u','d','e',0};
|
|
|
|
RtlOpenCurrentUser( KEY_READ, &root );
|
|
attr.Length = sizeof(attr);
|
|
attr.RootDirectory = root;
|
|
attr.ObjectName = &name;
|
|
attr.Attributes = 0;
|
|
attr.SecurityDescriptor = NULL;
|
|
attr.SecurityQualityOfService = NULL;
|
|
RtlInitUnicodeString( &name, configW );
|
|
|
|
/* @@ Wine registry key: HKCU\Software\Wine\Debug */
|
|
if (NtOpenKey( &hkey, KEY_READ, &attr )) hkey = 0;
|
|
NtClose( root );
|
|
if (!hkey) return;
|
|
|
|
str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)buffer)->Data;
|
|
RtlInitUnicodeString( &name, RelayIncludeW );
|
|
if (!NtQueryValueKey( hkey, &name, KeyValuePartialInformation, buffer, sizeof(buffer), &count ))
|
|
{
|
|
debug_relay_includelist = build_list( str );
|
|
}
|
|
|
|
RtlInitUnicodeString( &name, RelayExcludeW );
|
|
if (!NtQueryValueKey( hkey, &name, KeyValuePartialInformation, buffer, sizeof(buffer), &count ))
|
|
{
|
|
debug_relay_excludelist = build_list( str );
|
|
}
|
|
|
|
RtlInitUnicodeString( &name, SnoopIncludeW );
|
|
if (!NtQueryValueKey( hkey, &name, KeyValuePartialInformation, buffer, sizeof(buffer), &count ))
|
|
{
|
|
debug_snoop_includelist = build_list( str );
|
|
}
|
|
|
|
RtlInitUnicodeString( &name, SnoopExcludeW );
|
|
if (!NtQueryValueKey( hkey, &name, KeyValuePartialInformation, buffer, sizeof(buffer), &count ))
|
|
{
|
|
debug_snoop_excludelist = build_list( str );
|
|
}
|
|
NtClose( hkey );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* check_list
|
|
*
|
|
* Check if a given module and function is in the list.
|
|
*/
|
|
static BOOL check_list( const char *module, int ordinal, const char *func, const WCHAR **list )
|
|
{
|
|
char ord_str[10];
|
|
|
|
sprintf( ord_str, "%d", ordinal );
|
|
for(; *list; list++)
|
|
{
|
|
const WCHAR *p = strrchrW( *list, '.' );
|
|
if (p && p > *list) /* check module and function */
|
|
{
|
|
int len = p - *list;
|
|
if (strncmpiAW( module, *list, len-1 ) || module[len]) continue;
|
|
if (p[1] == '*' && !p[2]) return TRUE;
|
|
if (!strcmpiAW( ord_str, p + 1 )) return TRUE;
|
|
if (func && !strcmpiAW( func, p + 1 )) return TRUE;
|
|
}
|
|
else /* function only */
|
|
{
|
|
if (func && !strcmpiAW( func, *list )) return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RELAY_ShowDebugmsgRelay
|
|
*
|
|
* Simple function to decide if a particular debugging message is
|
|
* wanted.
|
|
*/
|
|
static BOOL RELAY_ShowDebugmsgRelay(const char *module, int ordinal, const char *func)
|
|
{
|
|
if (debug_relay_excludelist && check_list( module, ordinal, func, debug_relay_excludelist ))
|
|
return FALSE;
|
|
if (debug_relay_includelist && !check_list( module, ordinal, func, debug_relay_includelist ))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SNOOP16_ShowDebugmsgSnoop
|
|
*
|
|
* Simple function to decide if a particular debugging message is
|
|
* wanted.
|
|
*/
|
|
BOOL SNOOP16_ShowDebugmsgSnoop(const char *module, int ordinal, const char *func)
|
|
{
|
|
if (debug_snoop_excludelist && check_list( module, ordinal, func, debug_snoop_excludelist ))
|
|
return FALSE;
|
|
if (debug_snoop_includelist && !check_list( module, ordinal, func, debug_snoop_includelist ))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 module, LPSTR func, WORD *pOrd )
|
|
{
|
|
WORD i, max_offset;
|
|
register BYTE *p;
|
|
NE_MODULE *pModule;
|
|
ET_BUNDLE *bundle;
|
|
ET_ENTRY *entry;
|
|
|
|
*pOrd = 0;
|
|
if (!(pModule = NE_GetPtr( FarGetOwner16( GlobalHandle16( frame->module_cs ) ))))
|
|
return NULL;
|
|
|
|
max_offset = 0;
|
|
bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->ne_enttab);
|
|
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->ne_restab;
|
|
memcpy( module, p + 1, *p );
|
|
module[*p] = 0;
|
|
|
|
while (*p)
|
|
{
|
|
p += *p + 1 + sizeof(WORD);
|
|
if (*(WORD *)(p + *p + 1) == *pOrd) break;
|
|
}
|
|
memcpy( func, p + 1, *p );
|
|
func[*p] = 0;
|
|
|
|
/* 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 - FIELD_OFFSET( CALLFROM16, ret ));
|
|
}
|
|
|
|
|
|
extern int call_entry_point( void *func, int nb_args, const int *args );
|
|
__ASM_GLOBAL_FUNC( call_entry_point,
|
|
"pushl %ebp\n\t"
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
|
|
"movl %esp,%ebp\n\t"
|
|
__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
|
|
"pushl %esi\n\t"
|
|
__ASM_CFI(".cfi_rel_offset %esi,-4\n\t")
|
|
"pushl %edi\n\t"
|
|
__ASM_CFI(".cfi_rel_offset %edi,-8\n\t")
|
|
"movl 12(%ebp),%edx\n\t"
|
|
"shll $2,%edx\n\t"
|
|
"jz 1f\n\t"
|
|
"subl %edx,%esp\n\t"
|
|
"andl $~15,%esp\n\t"
|
|
"movl 12(%ebp),%ecx\n\t"
|
|
"movl 16(%ebp),%esi\n\t"
|
|
"movl %esp,%edi\n\t"
|
|
"cld\n\t"
|
|
"rep; movsl\n"
|
|
"1:\tcall *8(%ebp)\n\t"
|
|
"leal -8(%ebp),%esp\n\t"
|
|
"popl %edi\n\t"
|
|
__ASM_CFI(".cfi_same_value %edi\n\t")
|
|
"popl %esi\n\t"
|
|
__ASM_CFI(".cfi_same_value %esi\n\t")
|
|
"popl %ebp\n\t"
|
|
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
|
|
__ASM_CFI(".cfi_same_value %ebp\n\t")
|
|
"ret" )
|
|
|
|
|
|
/***********************************************************************
|
|
* relay_call_from_16_no_debug
|
|
*
|
|
* Same as relay_call_from_16 but doesn't print any debug information.
|
|
*/
|
|
static int relay_call_from_16_no_debug( void *entry_point, unsigned char *args16, CONTEXT *context,
|
|
const CALLFROM16 *call )
|
|
{
|
|
unsigned int i, j, nb_args = 0;
|
|
int args32[20];
|
|
|
|
/* look for the ret instruction */
|
|
for (j = 0; j < sizeof(call->ret)/sizeof(call->ret[0]); j++)
|
|
if (call->ret[j] == 0xca66 || call->ret[j] == 0xcb66) break;
|
|
|
|
if (call->ret[j] == 0xcb66) /* cdecl */
|
|
{
|
|
for (i = 0; i < 20; i++, nb_args++)
|
|
{
|
|
int type = (call->arg_types[i / 10] >> (3 * (i % 10))) & 7;
|
|
|
|
if (type == ARG_NONE) break;
|
|
switch(type)
|
|
{
|
|
case ARG_WORD:
|
|
args32[nb_args] = *(WORD *)args16;
|
|
args16 += sizeof(WORD);
|
|
break;
|
|
case ARG_SWORD:
|
|
args32[nb_args] = *(short *)args16;
|
|
args16 += sizeof(WORD);
|
|
break;
|
|
case ARG_LONG:
|
|
case ARG_SEGSTR:
|
|
args32[nb_args] = *(int *)args16;
|
|
args16 += sizeof(int);
|
|
break;
|
|
case ARG_PTR:
|
|
case ARG_STR:
|
|
args32[nb_args] = (int)MapSL( *(SEGPTR *)args16 );
|
|
args16 += sizeof(SEGPTR);
|
|
break;
|
|
case ARG_VARARG:
|
|
args32[nb_args] = (int)args16;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else /* not cdecl */
|
|
{
|
|
/* Start with the last arg */
|
|
args16 += call->ret[j + 1];
|
|
for (i = 0; i < 20; i++, nb_args++)
|
|
{
|
|
int type = (call->arg_types[i / 10] >> (3 * (i % 10))) & 7;
|
|
|
|
if (type == ARG_NONE) break;
|
|
switch(type)
|
|
{
|
|
case ARG_WORD:
|
|
args16 -= sizeof(WORD);
|
|
args32[nb_args] = *(WORD *)args16;
|
|
break;
|
|
case ARG_SWORD:
|
|
args16 -= sizeof(WORD);
|
|
args32[nb_args] = *(short *)args16;
|
|
break;
|
|
case ARG_LONG:
|
|
case ARG_SEGSTR:
|
|
args16 -= sizeof(int);
|
|
args32[nb_args] = *(int *)args16;
|
|
break;
|
|
case ARG_PTR:
|
|
case ARG_STR:
|
|
args16 -= sizeof(SEGPTR);
|
|
args32[nb_args] = (int)MapSL( *(SEGPTR *)args16 );
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!j) /* register function */
|
|
args32[nb_args++] = (int)context;
|
|
|
|
SYSLEVEL_CheckNotLevel( 2 );
|
|
|
|
return call_entry_point( entry_point, nb_args, args32 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* relay_call_from_16
|
|
*
|
|
* Replacement for the 16-bit relay functions when relay debugging is on.
|
|
*/
|
|
int relay_call_from_16( void *entry_point, unsigned char *args16, CONTEXT *context )
|
|
{
|
|
STACK16FRAME *frame;
|
|
WORD ordinal;
|
|
unsigned int i, j, nb_args = 0;
|
|
int ret_val, args32[20];
|
|
char module[10], func[64];
|
|
const CALLFROM16 *call;
|
|
|
|
frame = CURRENT_STACK16;
|
|
call = get_entry_point( frame, module, func, &ordinal );
|
|
if (!TRACE_ON(relay) || !RELAY_ShowDebugmsgRelay( module, ordinal, func ))
|
|
return relay_call_from_16_no_debug( entry_point, args16, context, call );
|
|
|
|
TRACE( "\1Call %s.%d: %s(", module, ordinal, func );
|
|
|
|
/* look for the ret instruction */
|
|
for (j = 0; j < sizeof(call->ret)/sizeof(call->ret[0]); j++)
|
|
if (call->ret[j] == 0xca66 || call->ret[j] == 0xcb66) break;
|
|
|
|
if (call->ret[j] == 0xcb66) /* cdecl */
|
|
{
|
|
for (i = 0; i < 20; i++, nb_args++)
|
|
{
|
|
int type = (call->arg_types[i / 10] >> (3 * (i % 10))) & 7;
|
|
|
|
if (type == ARG_NONE) break;
|
|
if (i) TRACE( "," );
|
|
switch(type)
|
|
{
|
|
case ARG_WORD:
|
|
TRACE( "%04x", *(WORD *)args16 );
|
|
args32[nb_args] = *(WORD *)args16;
|
|
args16 += sizeof(WORD);
|
|
break;
|
|
case ARG_SWORD:
|
|
TRACE( "%04x", *(WORD *)args16 );
|
|
args32[nb_args] = *(short *)args16;
|
|
args16 += sizeof(WORD);
|
|
break;
|
|
case ARG_LONG:
|
|
TRACE( "%08x", *(int *)args16 );
|
|
args32[nb_args] = *(int *)args16;
|
|
args16 += sizeof(int);
|
|
break;
|
|
case ARG_PTR:
|
|
TRACE( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
|
|
args32[nb_args] = (int)MapSL( *(SEGPTR *)args16 );
|
|
args16 += sizeof(SEGPTR);
|
|
break;
|
|
case ARG_STR:
|
|
TRACE( "%08x %s", *(int *)args16, debugstr_a( MapSL(*(SEGPTR *)args16 )));
|
|
args32[nb_args] = (int)MapSL( *(SEGPTR *)args16 );
|
|
args16 += sizeof(int);
|
|
break;
|
|
case ARG_SEGSTR:
|
|
TRACE( "%04x:%04x %s", *(WORD *)(args16+2), *(WORD *)args16,
|
|
debugstr_a( MapSL(*(SEGPTR *)args16 )) );
|
|
args32[nb_args] = *(SEGPTR *)args16;
|
|
args16 += sizeof(SEGPTR);
|
|
break;
|
|
case ARG_VARARG:
|
|
TRACE( "..." );
|
|
args32[nb_args] = (int)args16;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else /* not cdecl */
|
|
{
|
|
/* Start with the last arg */
|
|
args16 += call->ret[j + 1];
|
|
for (i = 0; i < 20; i++, nb_args++)
|
|
{
|
|
int type = (call->arg_types[i / 10] >> (3 * (i % 10))) & 7;
|
|
|
|
if (type == ARG_NONE) break;
|
|
if (i) TRACE( "," );
|
|
switch(type)
|
|
{
|
|
case ARG_WORD:
|
|
args16 -= sizeof(WORD);
|
|
args32[nb_args] = *(WORD *)args16;
|
|
TRACE( "%04x", *(WORD *)args16 );
|
|
break;
|
|
case ARG_SWORD:
|
|
args16 -= sizeof(WORD);
|
|
args32[nb_args] = *(short *)args16;
|
|
TRACE( "%04x", *(WORD *)args16 );
|
|
break;
|
|
case ARG_LONG:
|
|
args16 -= sizeof(int);
|
|
args32[nb_args] = *(int *)args16;
|
|
TRACE( "%08x", *(int *)args16 );
|
|
break;
|
|
case ARG_PTR:
|
|
args16 -= sizeof(SEGPTR);
|
|
args32[nb_args] = (int)MapSL( *(SEGPTR *)args16 );
|
|
TRACE( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
|
|
break;
|
|
case ARG_STR:
|
|
args16 -= sizeof(int);
|
|
args32[nb_args] = (int)MapSL( *(SEGPTR *)args16 );
|
|
TRACE( "%08x %s", *(int *)args16, debugstr_a( MapSL(*(SEGPTR *)args16 )));
|
|
break;
|
|
case ARG_SEGSTR:
|
|
args16 -= sizeof(SEGPTR);
|
|
args32[nb_args] = *(SEGPTR *)args16;
|
|
TRACE( "%04x:%04x %s", *(WORD *)(args16+2), *(WORD *)args16,
|
|
debugstr_a( MapSL(*(SEGPTR *)args16 )) );
|
|
break;
|
|
case ARG_VARARG:
|
|
TRACE( "..." );
|
|
args32[nb_args] = (int)args16;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!j) /* register function */
|
|
{
|
|
args32[nb_args++] = (int)context;
|
|
TRACE( ") ret=%04x:%04x ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x ds=%04x es=%04x efl=%08x\n",
|
|
frame->cs, frame->ip, (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
|
|
(WORD)context->Edx, (WORD)context->Esi, (WORD)context->Edi, (WORD)context->SegDs,
|
|
(WORD)context->SegEs, context->EFlags );
|
|
}
|
|
else TRACE( ") ret=%04x:%04x ds=%04x\n", frame->cs, frame->ip, frame->ds );
|
|
|
|
SYSLEVEL_CheckNotLevel( 2 );
|
|
|
|
ret_val = call_entry_point( entry_point, nb_args, args32 );
|
|
|
|
SYSLEVEL_CheckNotLevel( 2 );
|
|
|
|
TRACE( "\1Ret %s.%d: %s() ", module, ordinal, func );
|
|
if (!j) /* register function */
|
|
{
|
|
TRACE( "retval=none ret=%04x:%04x ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x ds=%04x es=%04x efl=%08x\n",
|
|
(WORD)context->SegCs, LOWORD(context->Eip), (WORD)context->Eax, (WORD)context->Ebx,
|
|
(WORD)context->Ecx, (WORD)context->Edx, (WORD)context->Esi, (WORD)context->Edi,
|
|
(WORD)context->SegDs, (WORD)context->SegEs, context->EFlags );
|
|
}
|
|
else
|
|
{
|
|
frame = CURRENT_STACK16; /* might have be changed by the entry point */
|
|
if (j == 1) /* 16-bit return sequence */
|
|
TRACE( "retval=%04x ret=%04x:%04x ds=%04x\n",
|
|
ret_val & 0xffff, frame->cs, frame->ip, frame->ds );
|
|
else
|
|
TRACE( "retval=%08x ret=%04x:%04x ds=%04x\n",
|
|
ret_val, frame->cs, frame->ip, frame->ds );
|
|
}
|
|
return ret_val;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* RELAY_GetPointer
|
|
*
|
|
* Get pointer to stack block when given esp pointing to 16-bit stack
|
|
* inside relay data segment.
|
|
*/
|
|
static RELAY_Stack16 *RELAY_GetPointer( DWORD offset )
|
|
{
|
|
offset = offset / sizeof(RELAY_Stack16) * sizeof(RELAY_Stack16);
|
|
return MapSL(MAKESEGPTR(DOSVM_dpmi_segments->relay_data_sel, offset));
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RELAY_MakeShortContext
|
|
*
|
|
* Allocate separate 16-bit stack, make stack pointer point to this
|
|
* stack and make code pointer point to stub that restores everything.
|
|
* So, after this routine, SS and CS are guaranteed to be 16-bit.
|
|
*
|
|
* Note: This might be called from signal handler, so the stack
|
|
* allocation algorithm must be signal safe.
|
|
*/
|
|
static void RELAY_MakeShortContext( CONTEXT *context )
|
|
{
|
|
DWORD offset = offsetof(RELAY_Stack16, stack_top);
|
|
RELAY_Stack16 *stack = RELAY_GetPointer( 0 );
|
|
|
|
while (stack->inuse && offset < DOSVM_RELAY_DATA_SIZE) {
|
|
stack++;
|
|
offset += sizeof(RELAY_Stack16);
|
|
}
|
|
|
|
if (offset >= DOSVM_RELAY_DATA_SIZE)
|
|
ERR( "Too many nested interrupts!\n" );
|
|
|
|
stack->inuse = 1;
|
|
stack->eip = context->Eip;
|
|
stack->seg_cs = context->SegCs;
|
|
stack->esp = context->Esp;
|
|
stack->seg_ss = context->SegSs;
|
|
|
|
stack->stack_bottom = RELAY_MAGIC;
|
|
stack->stack_top = RELAY_MAGIC;
|
|
|
|
context->SegSs = DOSVM_dpmi_segments->relay_data_sel;
|
|
context->Esp = offset;
|
|
context->SegCs = DOSVM_dpmi_segments->relay_code_sel;
|
|
context->Eip = 3;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RELAY_RelayStub
|
|
*
|
|
* This stub is called by __wine_call_from_16_regs in order to marshall
|
|
* relay parameters.
|
|
*/
|
|
static void __stdcall RELAY_RelayStub( DOSRELAY proc, unsigned char *args, CONTEXT *context )
|
|
{
|
|
if (proc)
|
|
{
|
|
RELAY_Stack16 *stack = RELAY_GetPointer( context->Esp );
|
|
|
|
DWORD old_seg_cs = context->SegCs;
|
|
DWORD old_eip = context->Eip;
|
|
DWORD old_seg_ss = context->SegSs;
|
|
DWORD old_esp = context->Esp;
|
|
|
|
context->SegCs = stack->seg_cs;
|
|
context->Eip = stack->eip;
|
|
context->SegSs = stack->seg_ss;
|
|
context->Esp = stack->esp;
|
|
|
|
proc( context, *(LPVOID *)args );
|
|
|
|
stack->seg_cs = context->SegCs;
|
|
stack->eip = context->Eip;
|
|
stack->seg_ss = context->SegSs;
|
|
stack->esp = context->Esp;
|
|
|
|
context->SegCs = old_seg_cs;
|
|
context->Eip = old_eip;
|
|
context->SegSs = old_seg_ss;
|
|
context->Esp = old_esp;
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* DOSVM_RelayHandler
|
|
*
|
|
* Restore saved code and stack pointers and release stack block.
|
|
*/
|
|
void DOSVM_RelayHandler( CONTEXT *context )
|
|
{
|
|
RELAY_Stack16 *stack = RELAY_GetPointer( context->Esp );
|
|
|
|
context->SegSs = stack->seg_ss;
|
|
context->Esp = stack->esp;
|
|
context->SegCs = stack->seg_cs;
|
|
context->Eip = stack->eip;
|
|
|
|
if (!stack->inuse ||
|
|
stack->stack_bottom != RELAY_MAGIC ||
|
|
stack->stack_top != RELAY_MAGIC)
|
|
ERR( "Stack corrupted!\n" );
|
|
|
|
stack->inuse = 0;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* DOSVM_BuildCallFrame
|
|
*
|
|
* Modifies the context so that return to context calls DOSRELAY and
|
|
* only after return from DOSRELAY the original context will be returned to.
|
|
*/
|
|
void DOSVM_BuildCallFrame( CONTEXT *context, DOSRELAY relay, LPVOID data )
|
|
{
|
|
WORD code_sel = DOSVM_dpmi_segments->relay_code_sel;
|
|
|
|
/*
|
|
* Allocate separate stack for relay call.
|
|
*/
|
|
RELAY_MakeShortContext( context );
|
|
|
|
/*
|
|
* Build call frame.
|
|
*/
|
|
PUSH_WORD16( context, HIWORD(data) ); /* argument.hiword */
|
|
PUSH_WORD16( context, LOWORD(data) ); /* argument.loword */
|
|
PUSH_WORD16( context, context->SegCs ); /* STACK16FRAME.cs */
|
|
PUSH_WORD16( context, LOWORD(context->Eip) ); /* STACK16FRAME.ip */
|
|
PUSH_WORD16( context, LOWORD(context->Ebp) ); /* STACK16FRAME.bp */
|
|
PUSH_WORD16( context, HIWORD(relay) ); /* STACK16FRAME.entry_point.hiword */
|
|
PUSH_WORD16( context, LOWORD(relay) ); /* STACK16FRAME.entry_point.loword */
|
|
PUSH_WORD16( context, 0 ); /* STACK16FRAME.entry_ip */
|
|
PUSH_WORD16( context, HIWORD(RELAY_RelayStub) ); /* STACK16FRAME.relay.hiword */
|
|
PUSH_WORD16( context, LOWORD(RELAY_RelayStub) ); /* STACK16FRAME.relay.loword */
|
|
PUSH_WORD16( context, 0 ); /* STACK16FRAME.module_cs.hiword */
|
|
PUSH_WORD16( context, code_sel ); /* STACK16FRAME.module_cs.loword */
|
|
PUSH_WORD16( context, 0 ); /* STACK16FRAME.callfrom_ip.hiword */
|
|
PUSH_WORD16( context, 0 ); /* STACK16FRAME.callfrom_ip.loword */
|
|
|
|
/*
|
|
* Adjust code pointer.
|
|
*/
|
|
context->SegCs = wine_get_cs();
|
|
context->Eip = (DWORD)__wine_call_from_16_regs;
|
|
}
|