/*********************************************************************** * WOWTHUNK_Init */ BOOL WOWTHUNK_Init(void) { /* allocate the code selector for CallTo16 routines */ LDT_ENTRY entry; WORD codesel = wine_ldt_alloc_entries(1); if (!codesel) return FALSE; wine_ldt_set_base( &entry, __wine_call16_start ); wine_ldt_set_limit( &entry, (BYTE *)(&CallTo16_TebSelector + 1) - __wine_call16_start - 1 ); wine_ldt_set_flags( &entry, WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT ); wine_ldt_set_entry( codesel, &entry ); /* Patch the return addresses for CallTo16 routines */ CallTo16_DataSelector = wine_get_ds(); call16_ret_addr = MAKESEGPTR( codesel, (BYTE *)__wine_call_to_16_ret - __wine_call16_start ); CALL32_CBClient_RetAddr = MAKESEGPTR( codesel, (BYTE *)CALL32_CBClient_Ret - __wine_call16_start ); CALL32_CBClientEx_RetAddr = MAKESEGPTR( codesel, (BYTE *)CALL32_CBClientEx_Ret - __wine_call16_start ); /* Prepare selector and offsets for DPMI event checking. */ dpmi_checker_selector = codesel; dpmi_checker_offset_call = (BYTE *)DPMI_PendingEventCheck - __wine_call16_start; dpmi_checker_offset_cleanup = (BYTE *)DPMI_PendingEventCheck_Cleanup - __wine_call16_start; dpmi_checker_offset_return = (BYTE *)DPMI_PendingEventCheck_Return - __wine_call16_start; if (TRACE_ON(relay) || TRACE_ON(snoop)) RELAY16_InitDebugLists(); return TRUE; }
/********************************************************************** * alloc_pm_selector * * Allocate a 64k sized selector corresponding to a real mode segment. */ static WORD alloc_pm_selector( WORD seg, unsigned char flags ) { WORD sel = wine_ldt_alloc_entries( 1 ); if (sel) { LDT_ENTRY entry; wine_ldt_set_base( &entry, (void *)(seg << 4) ); wine_ldt_set_limit( &entry, 0xffff ); wine_ldt_set_flags( &entry, flags ); wine_ldt_set_entry( sel, &entry ); } return sel; }
// ****************************************************************** // * func: EmuDeallocateLDT // ****************************************************************** void EmuDeallocateLDT(uint16 wSelector) { #ifndef __WINE__ NtDll::LDT_ENTRY LDTEntry; #else LDT_ENTRY LDTEntry; #endif EnterCriticalSection(&EmuLDTLock); ZeroMemory(&LDTEntry, sizeof(LDTEntry)); #ifndef __WINE__ NtDll::_NtSetLdtEntries(wSelector, LDTEntry, 0, LDTEntry); #else wine_ldt_set_entry(wSelector, &LDTEntry); #endif FreeLDTEntries[(wSelector >> 3)-1] = wSelector; LeaveCriticalSection(&EmuLDTLock); return; }
// ****************************************************************** // * func: EmuAllocateLDT // ****************************************************************** uint16 EmuAllocateLDT(uint32 dwBaseAddr, uint32 dwLimit) { #ifndef __WINE__ NtDll::LDT_ENTRY LDTEntry; #else LDT_ENTRY LDTEntry; #endif int x=0; EnterCriticalSection(&EmuLDTLock); // ****************************************************************** // * Locate a free LDT entry // ****************************************************************** { for(x=0;x<MAXIMUM_XBOX_THREADS;x++) if(FreeLDTEntries[x]) break; if(x == MAXIMUM_XBOX_THREADS) { LeaveCriticalSection(&EmuLDTLock); CxbxKrnlCleanup("Could not locate free LDT entry (too many threads?)"); return 0; } } // ****************************************************************** // * Set up selector information // ****************************************************************** { LDTEntry.BaseLow = (WORD)(dwBaseAddr & 0xFFFF); LDTEntry.HighWord.Bits.BaseMid = (dwBaseAddr >> 16) & 0xFF; LDTEntry.HighWord.Bits.BaseHi = (dwBaseAddr >> 24) & 0xFF; LDTEntry.HighWord.Bits.Type = 0x13; // RW data segment LDTEntry.HighWord.Bits.Dpl = 3; // user segment LDTEntry.HighWord.Bits.Pres = 1; // present LDTEntry.HighWord.Bits.Sys = 0; LDTEntry.HighWord.Bits.Reserved_0 = 0; LDTEntry.HighWord.Bits.Default_Big = 1; // 386 segment LDTEntry.HighWord.Bits.Granularity = (dwLimit >= 0x00100000) ? 1 : 0; if(LDTEntry.HighWord.Bits.Granularity) dwLimit >>= 12; LDTEntry.LimitLow = (WORD)(dwLimit & 0xFFFF); LDTEntry.HighWord.Bits.LimitHi = (dwLimit >> 16) & 0xF; } // ****************************************************************** // * Allocate selector // ****************************************************************** { #ifndef __WINE__ if(!NT_SUCCESS(NtDll::_NtSetLdtEntries(LDT_ENTRY_NUM(x), LDTEntry, 0, LDTEntry))) #else if(wine_ldt_set_entry(LDT_ENTRY_NUM(x), &LDTEntry) < 0) #endif { LeaveCriticalSection(&EmuLDTLock); CxbxKrnlCleanup("Could not set LDT entries"); return 0; } } LeaveCriticalSection(&EmuLDTLock); FreeLDTEntries[x] = 0; return LDT_ENTRY_NUM(x); }
/********************************************************************** * DOSVM_Int31Handler (WINEDOS16.149) * * Handler for int 31h (DPMI). */ void WINAPI DOSVM_Int31Handler( CONTEXT86 *context ) { RESET_CFLAG(context); switch(AX_reg(context)) { case 0x0000: /* Allocate LDT descriptors */ TRACE( "allocate LDT descriptors (%d)\n", CX_reg(context) ); { WORD sel = AllocSelectorArray16( CX_reg(context) ); if(!sel) { TRACE( "failed\n" ); SET_AX( context, 0x8011 ); /* descriptor unavailable */ SET_CFLAG( context ); } else { TRACE( "success, array starts at 0x%04x\n", sel ); SET_AX( context, sel ); } } break; case 0x0001: /* Free LDT descriptor */ TRACE( "free LDT descriptor (0x%04x)\n", BX_reg(context) ); if (FreeSelector16( BX_reg(context) )) { SET_AX( context, 0x8022 ); /* invalid selector */ SET_CFLAG( context ); } else { /* If a segment register contains the selector being freed, */ /* set it to zero. */ if (!((context->SegDs^BX_reg(context)) & ~3)) context->SegDs = 0; if (!((context->SegEs^BX_reg(context)) & ~3)) context->SegEs = 0; if (!((context->SegFs^BX_reg(context)) & ~3)) context->SegFs = 0; if (!((context->SegGs^BX_reg(context)) & ~3)) context->SegGs = 0; } break; case 0x0002: /* Real mode segment to descriptor */ TRACE( "real mode segment to descriptor (0x%04x)\n", BX_reg(context) ); { WORD entryPoint = 0; /* KERNEL entry point for descriptor */ switch(BX_reg(context)) { case 0x0000: entryPoint = 183; break; /* __0000H */ case 0x0040: entryPoint = 193; break; /* __0040H */ case 0xa000: entryPoint = 174; break; /* __A000H */ case 0xb000: entryPoint = 181; break; /* __B000H */ case 0xb800: entryPoint = 182; break; /* __B800H */ case 0xc000: entryPoint = 195; break; /* __C000H */ case 0xd000: entryPoint = 179; break; /* __D000H */ case 0xe000: entryPoint = 190; break; /* __E000H */ case 0xf000: entryPoint = 194; break; /* __F000H */ default: FIXME("Real mode segment (%x) to descriptor: no longer supported\n", BX_reg(context)); SET_CFLAG( context ); break; } if (entryPoint) { FARPROC16 proc = GetProcAddress16( GetModuleHandle16( "KERNEL" ), (LPCSTR)(ULONG_PTR)entryPoint ); SET_AX( context, LOWORD(proc) ); } } break; case 0x0003: /* Get next selector increment */ TRACE("get selector increment (__AHINCR)\n"); context->Eax = __AHINCR; break; case 0x0004: /* Lock selector (not supported) */ FIXME("lock selector not supported\n"); context->Eax = 0; /* FIXME: is this a correct return value? */ break; case 0x0005: /* Unlock selector (not supported) */ FIXME("unlock selector not supported\n"); context->Eax = 0; /* FIXME: is this a correct return value? */ break; case 0x0006: /* Get selector base address */ TRACE( "get selector base address (0x%04x)\n", BX_reg(context) ); { LDT_ENTRY entry; WORD sel = BX_reg(context); wine_ldt_get_entry( sel, &entry ); if (wine_ldt_is_empty(&entry)) { context->Eax = 0x8022; /* invalid selector */ SET_CFLAG(context); } else { void *base = wine_ldt_get_base(&entry); SET_CX( context, HIWORD(base) ); SET_DX( context, LOWORD(base) ); } } break; case 0x0007: /* Set selector base address */ { DWORD base = MAKELONG( DX_reg(context), CX_reg(context) ); WORD sel = BX_reg(context); TRACE( "set selector base address (0x%04x,0x%08lx)\n", sel, base ); /* check if Win16 app wants to access lower 64K of DOS memory */ if (base < 0x10000 && DOSVM_IsWin16()) DOSMEM_MapDosLayout(); SetSelectorBase( sel, base ); } break; case 0x0008: /* Set selector limit */ { DWORD limit = MAKELONG( DX_reg(context), CX_reg(context) ); TRACE( "set selector limit (0x%04x,0x%08lx)\n", BX_reg(context), limit ); SetSelectorLimit16( BX_reg(context), limit ); } break; case 0x0009: /* Set selector access rights */ TRACE( "set selector access rights(0x%04x,0x%04x)\n", BX_reg(context), CX_reg(context) ); SelectorAccessRights16( BX_reg(context), 1, CX_reg(context) ); break; case 0x000a: /* Allocate selector alias */ TRACE( "allocate selector alias (0x%04x)\n", BX_reg(context) ); SET_AX( context, AllocCStoDSAlias16( BX_reg(context) ) ); if (!AX_reg(context)) { SET_AX( context, 0x8011 ); /* descriptor unavailable */ SET_CFLAG(context); } break; case 0x000b: /* Get descriptor */ TRACE( "get descriptor (0x%04x)\n", BX_reg(context) ); { LDT_ENTRY *entry = (LDT_ENTRY*)CTX_SEG_OFF_TO_LIN( context, context->SegEs, context->Edi ); wine_ldt_get_entry( BX_reg(context), entry ); } break; case 0x000c: /* Set descriptor */ TRACE( "set descriptor (0x%04x)\n", BX_reg(context) ); { LDT_ENTRY *entry = (LDT_ENTRY*)CTX_SEG_OFF_TO_LIN( context, context->SegEs, context->Edi ); wine_ldt_set_entry( BX_reg(context), entry ); } break; case 0x000d: /* Allocate specific LDT descriptor */ FIXME( "allocate descriptor (0x%04x), stub!\n", BX_reg(context) ); SET_AX( context, 0x8011 ); /* descriptor unavailable */ SET_CFLAG( context ); break; case 0x000e: /* Get Multiple Descriptors (1.0) */ FIXME( "get multiple descriptors - unimplemented\n" ); break; case 0x000f: /* Set Multiple Descriptors (1.0) */ FIXME( "set multiple descriptors - unimplemented\n" ); break; case 0x0100: /* Allocate DOS memory block */ TRACE( "allocate DOS memory block (0x%x paragraphs)\n", BX_reg(context) ); { DWORD dw = GlobalDOSAlloc16( (DWORD)BX_reg(context) << 4 ); if (dw) { SET_AX( context, HIWORD(dw) ); SET_DX( context, LOWORD(dw) ); } else { SET_AX( context, 0x0008 ); /* insufficient memory */ SET_BX( context, DOSMEM_Available() >> 4 ); SET_CFLAG(context); } break; } case 0x0101: /* Free DOS memory block */ TRACE( "free DOS memory block (0x%04x)\n", DX_reg(context) ); { WORD error = GlobalDOSFree16( DX_reg(context) ); if (error) { SET_AX( context, 0x0009 ); /* memory block address invalid */ SET_CFLAG( context ); } } break; case 0x0102: /* Resize DOS Memory Block */ FIXME( "resize DOS memory block (0x%04x, 0x%x paragraphs) - unimplemented\n", DX_reg(context), BX_reg(context) ); break; case 0x0200: /* get real mode interrupt vector */ TRACE( "get realmode interupt vector (0x%02x)\n", BL_reg(context) ); { FARPROC16 proc = DOSVM_GetRMHandler( BL_reg(context) ); SET_CX( context, SELECTOROF(proc) ); SET_DX( context, OFFSETOF(proc) ); } break; case 0x0201: /* set real mode interrupt vector */ TRACE( "set realmode interrupt vector (0x%02x, 0x%04x:0x%04x)\n", BL_reg(context), CX_reg(context), DX_reg(context) ); DOSVM_SetRMHandler( BL_reg(context), (FARPROC16)MAKESEGPTR(CX_reg(context), DX_reg(context)) ); break; case 0x0202: /* Get Processor Exception Handler Vector */ FIXME( "Get Processor Exception Handler Vector (0x%02x)\n", BL_reg(context) ); if (DOSVM_IsDos32()) { SET_CX( context, 0 ); context->Edx = 0; } else { SET_CX( context, 0 ); SET_DX( context, 0 ); } break; case 0x0203: /* Set Processor Exception Handler Vector */ FIXME( "Set Processor Exception Handler Vector (0x%02x)\n", BL_reg(context) ); break; case 0x0204: /* Get protected mode interrupt vector */ TRACE("get protected mode interrupt handler (0x%02x)\n", BL_reg(context)); if (DOSVM_IsDos32()) { FARPROC48 handler = DOSVM_GetPMHandler48( BL_reg(context) ); SET_CX( context, handler.selector ); context->Edx = handler.offset; } else { FARPROC16 handler = DOSVM_GetPMHandler16( BL_reg(context) ); SET_CX( context, SELECTOROF(handler) ); SET_DX( context, OFFSETOF(handler) ); } break; case 0x0205: /* Set protected mode interrupt vector */ TRACE("set protected mode interrupt handler (0x%02x,0x%04x:0x%08lx)\n", BL_reg(context), CX_reg(context), context->Edx); if (DOSVM_IsDos32()) { FARPROC48 handler; handler.selector = CX_reg(context); handler.offset = context->Edx; DOSVM_SetPMHandler48( BL_reg(context), handler ); } else { FARPROC16 handler; handler = (FARPROC16)MAKESEGPTR( CX_reg(context), DX_reg(context)); DOSVM_SetPMHandler16( BL_reg(context), handler ); } break; case 0x0300: /* Simulate real mode interrupt */ TRACE( "Simulate real mode interrupt %02x.\n", BL_reg(context)); DOSVM_CallRMInt( context ); break; case 0x0301: /* Call real mode procedure with far return */ TRACE( "Call real mode procedure with far return.\n" ); DOSVM_CallRMProc( context, FALSE ); break; case 0x0302: /* Call real mode procedure with interrupt return */ TRACE( "Call real mode procedure with interrupt return.\n" ); DOSVM_CallRMProc( context, TRUE ); break; case 0x0303: /* Allocate Real Mode Callback Address */ TRACE( "Allocate real mode callback address.\n" ); DOSVM_AllocRMCB( context ); break; case 0x0304: /* Free Real Mode Callback Address */ TRACE( "Free real mode callback address.\n" ); DOSVM_FreeRMCB( context ); break; case 0x0305: /* Get State Save/Restore Addresses */ TRACE("get state save/restore addresses\n"); /* we probably won't need this kind of state saving */ SET_AX( context, 0 ); /* real mode: just point to the lret */ SET_BX( context, DOSVM_dpmi_segments->wrap_seg ); SET_CX( context, 2 ); /* protected mode: don't have any handler yet... */ /* FIXME: Use DI in 16-bit DPMI and EDI in 32-bit DPMI */ FIXME("no protected-mode dummy state save/restore handler yet\n"); SET_SI( context, 0 ); context->Edi = 0; break; case 0x0306: /* Get Raw Mode Switch Addresses */ TRACE("get raw mode switch addresses\n"); /* real mode, point to standard DPMI return wrapper */ SET_BX( context, DOSVM_dpmi_segments->wrap_seg ); SET_CX( context, 0 ); /* protected mode, point to DPMI call wrapper */ /* FIXME: Use DI in 16-bit DPMI and EDI in 32-bit DPMI */ /* FIXME: Doesn't work in DPMI32... */ SET_SI( context, DOSVM_dpmi_segments->dpmi_sel ); context->Edi = 8; /* offset of the INT 0x31 call */ break; case 0x0400: /* Get DPMI version */ TRACE("get DPMI version\n"); { SYSTEM_INFO si; GetSystemInfo(&si); SET_AX( context, 0x005a ); /* DPMI version 0.90 */ SET_BX( context, 0x0005 ); /* Flags: 32-bit, virtual memory */ SET_CL( context, si.wProcessorLevel ); SET_DX( context, 0x0870 ); /* Master/slave interrupt controller base */ } break; case 0x0401: /* Get DPMI Capabilities (1.0) */ FIXME( "get dpmi capabilities - unimplemented\n"); break; case 0x0500: /* Get free memory information */ TRACE("get free memory information\n"); { MEMORYSTATUS status; /* the layout is just the same as MEMMANINFO, but without * the dwSize entry. */ struct { DWORD dwLargestFreeBlock; DWORD dwMaxPagesAvailable; DWORD dwMaxPagesLockable; DWORD dwTotalLinearSpace; DWORD dwTotalUnlockedPages; DWORD dwFreePages; DWORD dwTotalPages; DWORD dwFreeLinearSpace; DWORD dwSwapFilePages; WORD wPageSize; } *info = CTX_SEG_OFF_TO_LIN( context, context->SegEs, context->Edi ); GlobalMemoryStatus( &status ); info->wPageSize = getpagesize(); info->dwLargestFreeBlock = status.dwAvailVirtual; info->dwMaxPagesAvailable = info->dwLargestFreeBlock / info->wPageSize; info->dwMaxPagesLockable = info->dwMaxPagesAvailable; info->dwTotalLinearSpace = status.dwTotalVirtual / info->wPageSize; info->dwTotalUnlockedPages = info->dwTotalLinearSpace; info->dwFreePages = info->dwMaxPagesAvailable; info->dwTotalPages = info->dwTotalLinearSpace; info->dwFreeLinearSpace = info->dwMaxPagesAvailable; info->dwSwapFilePages = status.dwTotalPageFile / info->wPageSize; break; } case 0x0501: /* Allocate memory block */ { DWORD size = MAKELONG( CX_reg(context), BX_reg(context) ); BYTE *ptr; TRACE( "allocate memory block (%ld bytes)\n", size ); ptr = (BYTE *)DPMI_xalloc( size ); if (!ptr) { SET_AX( context, 0x8012 ); /* linear memory not available */ SET_CFLAG(context); } else { SET_BX( context, HIWORD(ptr) ); SET_CX( context, LOWORD(ptr) ); SET_SI( context, HIWORD(ptr) ); SET_DI( context, LOWORD(ptr) ); } break; } case 0x0502: /* Free memory block */ { DWORD handle = MAKELONG( DI_reg(context), SI_reg(context) ); TRACE( "free memory block (0x%08lx)\n", handle ); DPMI_xfree( (void *)handle ); } break; case 0x0503: /* Resize memory block */ { DWORD size = MAKELONG( CX_reg(context), BX_reg(context) ); DWORD handle = MAKELONG( DI_reg(context), SI_reg(context) ); BYTE *ptr; TRACE( "resize memory block (0x%08lx, %ld bytes)\n", handle, size ); ptr = (BYTE *)DPMI_xrealloc( (void *)handle, size ); if (!ptr) { SET_AX( context, 0x8012 ); /* linear memory not available */ SET_CFLAG(context); } else { SET_BX( context, HIWORD(ptr) ); SET_CX( context, LOWORD(ptr) ); SET_SI( context, HIWORD(ptr) ); SET_DI( context, LOWORD(ptr) ); } } break; case 0x0507: /* Set page attributes (1.0) */ FIXME( "set page attributes - unimplemented\n" ); break; /* Just ignore it */ case 0x0600: /* Lock linear region */ TRACE( "lock linear region - ignored (no paging)\n" ); break; case 0x0601: /* Unlock linear region */ TRACE( "unlock linear region - ignored (no paging)\n" ); break; case 0x0602: /* Mark real mode region as pageable */ TRACE( "mark real mode region as pageable - ignored (no paging)\n" ); break; case 0x0603: /* Relock real mode region */ TRACE( "relock real mode region - ignored (no paging)\n" ); break; case 0x0604: /* Get page size */ TRACE("get pagesize\n"); SET_BX( context, HIWORD(getpagesize()) ); SET_CX( context, LOWORD(getpagesize()) ); break; case 0x0700: /* Mark pages as paging candidates */ TRACE( "mark pages as paging candidates - ignored (no paging)\n" ); break; case 0x0701: /* Discard pages */ TRACE( "discard pages - ignored (no paging)\n" ); break; case 0x0702: /* Mark page as demand-paging candidate */ TRACE( "mark page as demand-paging candidate - ignored (no paging)\n" ); break; case 0x0703: /* Discard page contents */ TRACE( "discard page contents - ignored (no paging)\n" ); break; case 0x0800: /* Physical address mapping */ FIXME( "physical address mapping (0x%08lx) - unimplemented\n", MAKELONG(CX_reg(context),BX_reg(context)) ); break; case 0x0900: /* Get and Disable Virtual Interrupt State */ TRACE( "Get and Disable Virtual Interrupt State: %ld\n", NtCurrentTeb()->dpmi_vif ); SET_AL( context, NtCurrentTeb()->dpmi_vif ? 1 : 0 ); NtCurrentTeb()->dpmi_vif = 0; break; case 0x0901: /* Get and Enable Virtual Interrupt State */ TRACE( "Get and Enable Virtual Interrupt State: %ld\n", NtCurrentTeb()->dpmi_vif ); SET_AL( context, NtCurrentTeb()->dpmi_vif ? 1 : 0 ); NtCurrentTeb()->dpmi_vif = 1; break; case 0x0902: /* Get Virtual Interrupt State */ TRACE( "Get Virtual Interrupt State: %ld\n", NtCurrentTeb()->dpmi_vif ); SET_AL( context, NtCurrentTeb()->dpmi_vif ? 1 : 0 ); break; case 0x0e00: /* Get Coprocessor Status (1.0) */ /* * Return status in AX bits: * B0 - MPv (MP bit in the virtual MSW/CR0) * 0 = numeric coprocessor is disabled for this client * 1 = numeric coprocessor is enabled for this client * B1 - EMv (EM bit in the virtual MSW/CR0) * 0 = client is not emulating coprocessor instructions * 1 = client is emulating coprocessor instructions * B2 - MPr (MP bit from the actual MSW/CR0) * 0 = numeric coprocessor is not present * 1 = numeric coprocessor is present * B3 - EMr (EM bit from the actual MSW/CR0) * 0 = host is not emulating coprocessor instructions * 1 = host is emulating coprocessor instructions * B4-B7 - coprocessor type * 00H = no coprocessor * 02H = 80287 * 03H = 80387 * 04H = 80486 with numeric coprocessor * 05H-0FH = reserved for future numeric processors */ TRACE( "Get Coprocessor Status\n" ); SET_AX( context, 69 ); /* 486, coprocessor present and enabled */ break; case 0x0e01: /* Set Coprocessor Emulation (1.0) */ /* * See function 0x0e00. * BX bit B0 is new value for MPv. * BX bit B1 is new value for EMv. */ if (BX_reg(context) != 1) FIXME( "Set Coprocessor Emulation to %d - unimplemented\n", BX_reg(context) ); else TRACE( "Set Coprocessor Emulation - ignored\n" ); break; default: INT_BARF( context, 0x31 ); SET_AX( context, 0x8001 ); /* unsupported function */ SET_CFLAG(context); break; } }