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rundll32: Add wrapper to call entry point on i386. 

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48018
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-01-21 20:58:47 +01:00
parent 4ebb7293dc
commit 092d76b911
1 changed files with 43 additions and 13 deletions
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56
programs/rundll32/rundll32.c
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@ -37,16 +37,51 @@
#define WIN32_LEAN_AND_MEAN
#include "windows.h"
#include "wine/winbase16.h"
#include "wine/asm.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(rundll32);
/*
* Control_RunDLL has these parameters
*/
typedef void (WINAPI *EntryPointW)(HWND hWnd, HINSTANCE hInst, LPWSTR lpszCmdLine, int nCmdShow);
typedef void (WINAPI *EntryPointA)(HWND hWnd, HINSTANCE hInst, LPSTR lpszCmdLine, int nCmdShow);
#ifdef __i386__
/* wrapper for dlls that declare the entry point incorrectly */
extern void call_entry_point( void *func, HWND hwnd, HINSTANCE inst, void *cmdline, int show );
__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 %edi\n\t"
__ASM_CFI(".cfi_rel_offset %edi,-4\n\t")
"pushl %esi\n\t"
__ASM_CFI(".cfi_rel_offset %esi,-8\n\t")
"pushl %ebx\n\t"
__ASM_CFI(".cfi_rel_offset %ebx,-12\n\t")
"subl $12,%esp\n\t"
"pushl 24(%ebp)\n\t"
"pushl 20(%ebp)\n\t"
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"call *8(%ebp)\n\t"
"leal -12(%ebp),%esp\n\t"
"popl %ebx\n\t"
__ASM_CFI(".cfi_same_value %ebx\n\t")
"popl %esi\n\t"
__ASM_CFI(".cfi_same_value %esi\n\t")
"popl %edi\n\t"
__ASM_CFI(".cfi_same_value %edi\n\t")
"leave\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret" )
#else
static void call_entry_point( void *func, HWND hwnd, HINSTANCE inst, void *cmdline, int show )
{
void (WINAPI *entry_point)( HWND hwnd, HINSTANCE inst, void *cmdline, int show ) = func;
entry_point( hwnd, inst, cmdline, show );
}
#endif
/*
* Control_RunDLL needs to have a window. So lets make us a very
@ -304,12 +339,10 @@ int WINAPI wWinMain(HINSTANCE instance, HINSTANCE hOldInstance, LPWSTR szCmdLine
if (unicode)
{
EntryPointW pEntryPointW = entry_point;
WINE_TRACE( "Calling %s (%p,%p,%s,%d)\n", wine_dbgstr_w(szEntryPoint),
hWnd, instance, wine_dbgstr_w(szCmdLine), info.wShowWindow );
pEntryPointW( hWnd, instance, szCmdLine, info.wShowWindow );
call_entry_point( entry_point, hWnd, instance, szCmdLine, info.wShowWindow );
}
else
{
@ -331,11 +364,8 @@ int WINAPI wWinMain(HINSTANCE instance, HINSTANCE hOldInstance, LPWSTR szCmdLine
if (pRunDLL_CallEntry16)
pRunDLL_CallEntry16( entry_point, hWnd, instance, cmdline, info.wShowWindow );
}
else
{
EntryPointA pEntryPointA = entry_point;
pEntryPointA( hWnd, instance, cmdline, info.wShowWindow );
}
else call_entry_point( entry_point, hWnd, instance, cmdline, info.wShowWindow );
HeapFree( GetProcessHeap(), 0, cmdline );
}