/***********************************************************************
* server_exit_thread
*/
void server_exit_thread( int status )
{
struct wine_pthread_thread_info info;
int fds[4];
RtlAcquirePebLock();
RemoveEntryList( &NtCurrentTeb()->TlsLinks );
RtlReleasePebLock();
RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->FlsSlots );
RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->TlsExpansionSlots );
info.stack_base = NtCurrentTeb()->DeallocationStack;
info.teb_base = NtCurrentTeb();
info.teb_sel = wine_get_fs();
info.exit_status = status;
fds[0] = ntdll_get_thread_data()->wait_fd[0];
fds[1] = ntdll_get_thread_data()->wait_fd[1];
fds[2] = ntdll_get_thread_data()->reply_fd;
fds[3] = ntdll_get_thread_data()->request_fd;
pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, NULL );
info.stack_size = virtual_free_system_view( &info.stack_base );
info.teb_size = virtual_free_system_view( &info.teb_base );
close( fds[0] );
close( fds[1] );
close( fds[2] );
close( fds[3] );
pthread_functions.exit_thread( &info );
}
/***********************************************************************
* NE_InitDLL
*
* Call the DLL initialization code
*/
static BOOL NE_InitDLL( NE_MODULE *pModule )
{
SEGTABLEENTRY *pSegTable;
WORD hInst, ds, heap;
CONTEXT context;
pSegTable = NE_SEG_TABLE( pModule );
if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE) ||
(pModule->ne_flags & NE_FFLAGS_WIN32)) return TRUE; /*not a library*/
/* Call USER signal handler for Win3.1 compatibility. */
NE_CallUserSignalProc( pModule->self, USIG16_DLL_LOAD );
if (!SELECTOROF(pModule->ne_csip)) return TRUE; /* no initialization code */
/* Registers at initialization must be:
* cx heap size
* di library instance
* ds data segment if any
* es:si command line (always 0)
*/
memset( &context, 0, sizeof(context) );
NE_GetDLLInitParams( pModule, &hInst, &ds, &heap );
context.Ecx = heap;
context.Edi = hInst;
context.SegDs = ds;
context.SegEs = ds; /* who knows ... */
context.SegFs = wine_get_fs();
context.SegGs = wine_get_gs();
context.SegCs = SEL(pSegTable[SELECTOROF(pModule->ne_csip)-1].hSeg);
context.Eip = OFFSETOF(pModule->ne_csip);
context.Ebp = OFFSETOF(getWOW32Reserved()) + FIELD_OFFSET(STACK16FRAME,bp);
pModule->ne_csip = 0; /* Don't initialize it twice */
TRACE_(dll)("Calling LibMain for %.*s, cs:ip=%04x:%04x ds=%04x di=%04x cx=%04x\n",
*((BYTE*)pModule + pModule->ne_restab),
(char *)pModule + pModule->ne_restab + 1,
context.SegCs, context.Eip, context.SegDs,
LOWORD(context.Edi), LOWORD(context.Ecx) );
WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
return TRUE;
}
static void NE_CallDllEntryPoint( NE_MODULE *pModule, DWORD dwReason )
{
WORD hInst, ds, heap;
FARPROC16 entryPoint;
if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE)) return;
if (!(pModule->ne_flags & NE_FFLAGS_BUILTIN) && pModule->ne_expver < 0x0400) return;
if (!(entryPoint = GetProcAddress16( pModule->self, "DllEntryPoint" ))) return;
NE_GetDLLInitParams( pModule, &hInst, &ds, &heap );
TRACE_(dll)( "Calling %s DllEntryPoint, cs:ip=%04x:%04x\n",
NE_MODULE_NAME( pModule ),
SELECTOROF(entryPoint), OFFSETOF(entryPoint) );
if ( pModule->ne_flags & NE_FFLAGS_BUILTIN )
{
WinNEEntryProc entryProc = (WinNEEntryProc)((ENTRYPOINT16 *)MapSL( (SEGPTR)entryPoint ))->target;
entryProc( dwReason, hInst, ds, heap, 0, 0 );
}
else
{
CONTEXT context;
WORD args[8];
memset( &context, 0, sizeof(context) );
context.SegDs = ds;
context.SegEs = ds; /* who knows ... */
context.SegFs = wine_get_fs();
context.SegGs = wine_get_gs();
context.SegCs = HIWORD(entryPoint);
context.Eip = LOWORD(entryPoint);
context.Ebp = OFFSETOF(getWOW32Reserved()) + FIELD_OFFSET(STACK16FRAME,bp);
args[7] = HIWORD(dwReason);
args[6] = LOWORD(dwReason);
args[5] = hInst;
args[4] = ds;
args[3] = heap;
args[2] = 0; /* HIWORD(dwReserved1) */
args[1] = 0; /* LOWORD(dwReserved1) */
args[0] = 0; /* wReserved2 */
WOWCallback16Ex( 0, WCB16_REGS, sizeof(args), args, (DWORD *)&context );
}
}
/*************************************************************
* insert_event_check
*
* Make resuming the context check for pending DPMI events
* before the original context is restored. This is required
* because DPMI events are asynchronous, they are blocked while
* Wine 32-bit code is being executed and we want to prevent
* a race when returning back to 16-bit or 32-bit DPMI context.
*/
static void insert_event_check( CONTEXT *context )
{
char *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
/* don't do event check while in system code */
if (wine_ldt_is_system(context->SegCs))
return;
if(context->SegCs == dpmi_checker_selector &&
context->Eip >= dpmi_checker_offset_call &&
context->Eip <= dpmi_checker_offset_cleanup)
{
/*
* Nested call. Stack will be preserved.
*/
}
else if(context->SegCs == dpmi_checker_selector &&
context->Eip == dpmi_checker_offset_return)
{
/*
* Nested call. We have just finished popping the fs
* register, lets put it back into stack.
*/
stack -= sizeof(WORD);
*(WORD*)stack = context->SegFs;
context->Esp -= 2;
}
else
{
/*
* Call is not nested.
* Push modified registers into stack.
* These will be popped by the assembler stub.
*/
stack -= sizeof(DWORD);
*(DWORD*)stack = context->EFlags;
stack -= sizeof(DWORD);
*(DWORD*)stack = context->SegCs;
stack -= sizeof(DWORD);
*(DWORD*)stack = context->Eip;
stack -= sizeof(WORD);
*(WORD*)stack = context->SegFs;
context->Esp -= 14;
}
/*
* Modify the context so that we jump into assembler stub.
* TEB access is made easier by providing the stub
* with the correct fs register value.
*/
context->SegCs = dpmi_checker_selector;
context->Eip = dpmi_checker_offset_call;
context->SegFs = wine_get_fs();
}
/* (see dosmem.c, function DOSMEM_InitDPMI) */
static void StartPM( CONTEXT86 *context )
{
UINT16 cs, ss, ds, es;
CONTEXT86 pm_ctx;
DWORD psp_ofs = (DWORD)(DOSVM_psp<<4);
PDB16 *psp = (PDB16 *)psp_ofs;
HANDLE16 env_seg = psp->environment;
unsigned char selflags = WINE_LDT_FLAGS_DATA;
RESET_CFLAG(context);
dpmi_flag = AX_reg(context);
/* our mode switch wrapper have placed the desired CS into DX */
cs = alloc_pm_selector( context->Edx, WINE_LDT_FLAGS_CODE );
/* due to a flaw in some CPUs (at least mine), it is best to mark stack segments as 32-bit if they
can be used in 32-bit code. Otherwise, these CPUs may not set the high word of esp during a
ring transition (from kernel code) to the 16-bit stack, and this causes trouble if executing
32-bit code using this stack. */
if (dpmi_flag & 1) selflags |= WINE_LDT_FLAGS_32BIT;
ss = alloc_pm_selector( context->SegSs, selflags );
/* do the same for the data segments, just in case */
if (context->SegDs == context->SegSs) ds = ss;
else ds = alloc_pm_selector( context->SegDs, selflags );
es = alloc_pm_selector( DOSVM_psp, selflags );
/* convert environment pointer, as the spec says, but we're a bit lazy about the size here... */
psp->environment = alloc_pm_selector( env_seg, WINE_LDT_FLAGS_DATA );
pm_ctx = *context;
pm_ctx.SegCs = DOSVM_dpmi_segments->dpmi_sel;
/* our mode switch wrapper expects the new CS in DX, and the new SS in AX */
pm_ctx.Eax = ss;
pm_ctx.Edx = cs;
pm_ctx.SegDs = ds;
pm_ctx.SegEs = es;
pm_ctx.SegFs = wine_get_fs();
pm_ctx.SegGs = wine_get_gs();
pm_ctx.EFlags &= ~V86_FLAG;
TRACE("DOS program is now entering %d-bit protected mode\n",
DOSVM_IsDos32() ? 32 : 16);
__TRY
{
WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&pm_ctx );
}
__EXCEPT(dpmi_exception_handler)
{
}
__ENDTRY
TRACE( "Protected mode DOS program is terminating\n" );
/*
* FIXME: Instead of calling ExitThread, we should release all
* allocated protected mode resources and call MZ_Exit
* using real mode context. See DPMI specification.
*/
ExitThread( DPMI_retval );
#if 0
wine_ldt_free_entries( psp->environment, 1 );
psp->environment = env_seg;
wine_ldt_free_entries(es,1);
if (ds != ss) wine_ldt_free_entries(ds,1);
wine_ldt_free_entries(ss,1);
wine_ldt_free_entries(cs,1);
#endif
}
