marko10_000
/
wine-wine
forked from Mirrors/wine-wine
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Patch flat cs of 16-bit entry points if current %cs is different from 

compiled value, and retrieve flat ds from a global variable. This
should avoid problems with win4lin kernels.
oldstable
Alexandre Julliard 2000-10-29 01:28:30 +00:00
parent 44f84b55f3
commit aa5a1162a3
7 changed files with 45 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
if1632/builtin.c
View File

@ -17,6 +17,7 @@
#include "module.h"
#include "miscemu.h"
#include "stackframe.h"
#include "selectors.h"
#include "task.h"
#include "debugtools.h"
#include "toolhelp.h"
@ -31,6 +32,21 @@ static const BUILTIN16_DESCRIPTOR *builtin_dlls[MAX_DLLS];
static int nb_dlls;
/* patch all the flat cs references of the code segment if necessary */
inline static void patch_code_segment( void *code_segment )
{
#ifdef __i386__
CALLFROM16 *call = code_segment;
if (call->flatcs == __get_cs()) return; /* nothing to patch */
while (call->pushl == 0x68)
{
call->flatcs = __get_cs();
call++;
}
#endif
}
/***********************************************************************
* BUILTIN_DoLoadModule16
*
@ -62,6 +78,7 @@ static HMODULE16 BUILTIN_DoLoadModule16( const BUILTIN16_DESCRIPTOR *descr )
pSegTable->hSeg = GLOBAL_CreateBlock( GMEM_FIXED, descr->code_start,
pSegTable->minsize, hModule, TRUE, TRUE, FALSE );
if (!pSegTable->hSeg) return 0;
patch_code_segment( descr->code_start );
pSegTable++;
/* Allocate the data segment */

2
if1632/relay.c
View File

@ -36,6 +36,7 @@ BOOL RELAY_Init(void)
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;
@ -46,6 +47,7 @@ BOOL RELAY_Init(void)
/* Patch the return addresses for CallTo16 routines */
CallTo16_DataSelector = __get_ds();
CallTo16_RetAddr =
PTR_SEG_OFF_TO_SEGPTR( codesel, (char*)CallTo16_Ret - (char*)Call16_Ret_Start );
CALL32_CBClient_RetAddr =

4
include/builtin16.h
View File

@ -55,8 +55,8 @@ typedef struct
const char *name; /* DLL name */
void *module_start; /* 32-bit address of the module data */
int module_size; /* Size of the module data */
const BYTE *code_start; /* 32-bit address of DLL code */
const BYTE *data_start; /* 32-bit address of DLL data */
void *code_start; /* 32-bit address of DLL code */
void *data_start; /* 32-bit address of DLL data */
const char *owner; /* 32-bit dll that contains this dll */
const void *rsrc; /* resources data */
} BUILTIN16_DESCRIPTOR;

3
tools/winebuild/build.h
View File

@ -167,9 +167,6 @@ extern int DLLHeapSize;
extern int UsePIC;
extern int debugging;
extern unsigned short code_selector;
extern unsigned short data_selector;
extern char DLLName[80];
extern char DLLFileName[80];
extern char DLLInitFunc[80];

21
tools/winebuild/main.c
View File

@ -17,17 +17,6 @@
#include "winnt.h"
#include "build.h"
#ifdef __i386__
extern WORD __get_cs(void);
extern WORD __get_ds(void);
__ASM_GLOBAL_FUNC( __get_cs, "movw %cs,%ax\n\tret" );
__ASM_GLOBAL_FUNC( __get_ds, "movw %ds,%ax\n\tret" );
#else
static inline WORD __get_cs(void) { return 0; }
static inline WORD __get_ds(void) { return 0; }
#endif
ORDDEF EntryPoints[MAX_ORDINALS];
ORDDEF *Ordinals[MAX_ORDINALS];
ORDDEF *Names[MAX_ORDINALS];
@ -49,9 +38,6 @@ char owner_name[80];
const char *input_file_name;
const char *output_file_name;
unsigned short code_selector;
unsigned short data_selector;
static FILE *input_file;
static FILE *output_file;
@ -189,13 +175,6 @@ int main(int argc, char **argv)
output_file = stdout;
parse_options( argv );
/* Retrieve the selector values; this assumes that we are building
* the asm files on the platform that will also run them. Probably
* a safe assumption to make.
*/
code_selector = __get_cs();
data_selector = __get_ds();
switch(exec_mode)
{
case MODE_SPEC:

18
tools/winebuild/relay.c
View File

@ -120,8 +120,15 @@ static void BuildCallFrom16Core( FILE *outfile, int reg_func, int thunk, int sho
fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name );
}
if (UsePIC)
{
fprintf( outfile, "\t.byte 0x2e\n\tmovl " PREFIX "CallTo16_DataSelector@GOT(%%ecx), %%edx\n" );
fprintf( outfile, "\t.byte 0x2e\n\tmovl (%%edx), %%edx\n" );
}
else
fprintf( outfile, "\t.byte 0x2e\n\tmovl " PREFIX "CallTo16_DataSelector,%%edx\n" );
/* Load 32-bit segment registers */
fprintf( outfile, "\tmovw $0x%04x, %%dx\n", data_selector );
#ifdef __svr4__
fprintf( outfile, "\tdata16\n");
#endif
@ -690,7 +697,7 @@ static void BuildRet16Func( FILE *outfile )
/* Restore 32-bit segment registers */
fprintf( outfile, "\tmovw $0x%04x,%%di\n", data_selector );
fprintf( outfile, "\t.byte 0x2e\n\tmovl " PREFIX "CallTo16_DataSelector-" PREFIX "Call16_Ret_Start,%%edi\n" );
#ifdef __svr4__
fprintf( outfile, "\tdata16\n");
#endif
@ -715,9 +722,12 @@ static void BuildRet16Func( FILE *outfile )
fprintf( outfile, "\tlret\n" );
/* Declare the return address variable */
/* Declare the return address and data selector variables */
fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_RetAddr\n" );
fprintf( outfile, "\n\t.align 4\n" );
fprintf( outfile, "\t.globl " PREFIX "CallTo16_DataSelector\n" );
fprintf( outfile, PREFIX "CallTo16_DataSelector:\t.long 0\n" );
fprintf( outfile, "\t.globl " PREFIX "CallTo16_RetAddr\n" );
fprintf( outfile, PREFIX "CallTo16_RetAddr:\t.long 0\n" );
}

13
tools/winebuild/spec16.c
View File

@ -18,6 +18,13 @@
#include "build.h"
#ifdef __i386__
extern unsigned short __get_cs(void);
__ASM_GLOBAL_FUNC( __get_cs, "movw %cs,%ax\n\tret" );
#else
static inline unsigned short __get_cs(void) { return 0; }
#endif /* __i386__ */
/*******************************************************************
* StoreVariableCode
@ -497,12 +504,12 @@ void BuildSpec16File( FILE *outfile )
int i, nFuncs, nTypes;
int code_offset, data_offset, module_size, res_size;
unsigned char *data;
unsigned short code_selector = __get_cs();
/* File header */
fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
input_file_name );
fprintf( outfile, "#define __FLATCS__ 0x%04x\n", code_selector );
fprintf( outfile, "#include \"builtin16.h\"\n\n" );
fprintf( outfile, "extern void RELAY_Unimplemented16(void);\n\n" );
@ -709,8 +716,8 @@ void BuildSpec16File( FILE *outfile )
fprintf( outfile, " \"%s\",\n", DLLName );
fprintf( outfile, " Module,\n" );
fprintf( outfile, " sizeof(Module),\n" );
fprintf( outfile, " (BYTE *)&Code_Segment,\n" );
fprintf( outfile, " (BYTE *)Data_Segment,\n" );
fprintf( outfile, " &Code_Segment,\n" );
fprintf( outfile, " Data_Segment,\n" );
fprintf( outfile, " \"%s\",\n", owner_name );
fprintf( outfile, " %s\n", res_size ? "resource_data" : "0" );
fprintf( outfile, "};\n" );