| /* |
| * DPMI 0.9 emulation |
| * |
| * Copyright 1995 Alexandre Julliard |
| * |
| * 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 <stdarg.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winternl.h" |
| #include "wine/winbase16.h" |
| #include "wownt32.h" |
| #include "kernel16_private.h" |
| #include "dosexe.h" |
| |
| #include "excpt.h" |
| #include "wine/debug.h" |
| #include "wine/exception.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(int31); |
| |
| /* Structure for real-mode callbacks */ |
| typedef struct |
| { |
| DWORD edi; |
| DWORD esi; |
| DWORD ebp; |
| DWORD reserved; |
| DWORD ebx; |
| DWORD edx; |
| DWORD ecx; |
| DWORD eax; |
| WORD fl; |
| WORD es; |
| WORD ds; |
| WORD fs; |
| WORD gs; |
| WORD ip; |
| WORD cs; |
| WORD sp; |
| WORD ss; |
| } REALMODECALL; |
| |
| typedef struct tagRMCB { |
| DWORD address; |
| DWORD proc_ofs,proc_sel; |
| DWORD regs_ofs,regs_sel; |
| struct tagRMCB *next; |
| } RMCB; |
| |
| static RMCB *FirstRMCB = NULL; |
| static WORD dpmi_flag; |
| static void* lastvalloced = NULL; |
| static BYTE DPMI_retval; |
| |
| #include "pshpack1.h" |
| |
| typedef struct { |
| WORD Handle; |
| DWORD Offset; |
| } MOVEOFS; |
| |
| typedef struct { |
| DWORD Length; |
| MOVEOFS Source; |
| MOVEOFS Dest; |
| } MOVESTRUCT; |
| |
| #include "poppack.h" |
| |
| /********************************************************************** |
| * DOSVM_IsDos32 |
| * |
| * Return TRUE if we are in 32-bit protected mode DOS process. |
| */ |
| BOOL DOSVM_IsDos32(void) |
| { |
| return (dpmi_flag & 1) != 0; |
| } |
| |
| |
| /********************************************************************** |
| * 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; |
| } |
| |
| |
| /********************************************************************** |
| * dpmi_exception_handler |
| * |
| * Handle EXCEPTION_VM86_STI exceptions generated |
| * when there are pending asynchronous events. |
| */ |
| static LONG WINAPI dpmi_exception_handler(EXCEPTION_POINTERS *eptr) |
| { |
| EXCEPTION_RECORD *rec = eptr->ExceptionRecord; |
| CONTEXT *context = eptr->ContextRecord; |
| |
| if (rec->ExceptionCode == EXCEPTION_VM86_STI) |
| { |
| if (ISV86(context)) |
| ERR( "Real mode STI caught by protected mode handler!\n" ); |
| DOSVM_SendQueuedEvents(context); |
| return EXCEPTION_CONTINUE_EXECUTION; |
| } |
| else if (rec->ExceptionCode == EXCEPTION_VM86_INTx) |
| { |
| if (ISV86(context)) |
| ERR( "Real mode INTx caught by protected mode handler!\n" ); |
| DPMI_retval = (BYTE)rec->ExceptionInformation[0]; |
| return EXCEPTION_EXECUTE_HANDLER; |
| } |
| |
| return EXCEPTION_CONTINUE_SEARCH; |
| } |
| |
| |
| /********************************************************************** |
| * INT_GetRealModeContext |
| */ |
| static void INT_GetRealModeContext( REALMODECALL *call, CONTEXT *context ) |
| { |
| context->Eax = call->eax; |
| context->Ebx = call->ebx; |
| context->Ecx = call->ecx; |
| context->Edx = call->edx; |
| context->Esi = call->esi; |
| context->Edi = call->edi; |
| context->Ebp = call->ebp; |
| context->EFlags = call->fl | V86_FLAG; |
| context->Eip = call->ip; |
| context->Esp = call->sp; |
| context->SegCs = call->cs; |
| context->SegDs = call->ds; |
| context->SegEs = call->es; |
| context->SegFs = call->fs; |
| context->SegGs = call->gs; |
| context->SegSs = call->ss; |
| } |
| |
| |
| /********************************************************************** |
| * INT_SetRealModeContext |
| */ |
| static void INT_SetRealModeContext( REALMODECALL *call, CONTEXT *context ) |
| { |
| call->eax = context->Eax; |
| call->ebx = context->Ebx; |
| call->ecx = context->Ecx; |
| call->edx = context->Edx; |
| call->esi = context->Esi; |
| call->edi = context->Edi; |
| call->ebp = context->Ebp; |
| call->fl = LOWORD(context->EFlags); |
| call->ip = LOWORD(context->Eip); |
| call->sp = LOWORD(context->Esp); |
| call->cs = context->SegCs; |
| call->ds = context->SegDs; |
| call->es = context->SegEs; |
| call->fs = context->SegFs; |
| call->gs = context->SegGs; |
| call->ss = context->SegSs; |
| } |
| |
| /********************************************************************** |
| * DPMI_xalloc |
| * special virtualalloc, allocates linearly monoton growing memory. |
| * (the usual VirtualAlloc does not satisfy that restriction) |
| */ |
| static LPVOID DPMI_xalloc( DWORD len ) |
| { |
| LPVOID ret; |
| LPVOID oldlastv = lastvalloced; |
| |
| if (lastvalloced) |
| { |
| int xflag = 0; |
| |
| ret = NULL; |
| while (!ret) |
| { |
| ret = VirtualAlloc( lastvalloced, len, |
| MEM_COMMIT|MEM_RESERVE, PAGE_EXECUTE_READWRITE ); |
| if (!ret) |
| lastvalloced = (char *) lastvalloced + 0x10000; |
| |
| /* we failed to allocate one in the first round. |
| * try non-linear |
| */ |
| if (!xflag && (lastvalloced<oldlastv)) |
| { |
| /* wrapped */ |
| FIXME( "failed to allocate linearly growing memory (%u bytes), " |
| "using non-linear growing...\n", len ); |
| xflag++; |
| } |
| |
| /* if we even fail to allocate something in the next |
| * round, return NULL |
| */ |
| if ((xflag==1) && (lastvalloced >= oldlastv)) |
| xflag++; |
| |
| if ((xflag==2) && (lastvalloced < oldlastv)) { |
| FIXME( "failed to allocate any memory of %u bytes!\n", len ); |
| return NULL; |
| } |
| } |
| } |
| else |
| { |
| ret = VirtualAlloc( NULL, len, |
| MEM_COMMIT|MEM_RESERVE, PAGE_EXECUTE_READWRITE ); |
| } |
| |
| lastvalloced = (LPVOID)(((DWORD)ret+len+0xffff)&~0xffff); |
| return ret; |
| } |
| |
| /********************************************************************** |
| * DPMI_xfree |
| */ |
| static void DPMI_xfree( LPVOID ptr ) |
| { |
| VirtualFree( ptr, 0, MEM_RELEASE ); |
| } |
| |
| /********************************************************************** |
| * DPMI_xrealloc |
| * |
| * FIXME: perhaps we could grow this mapped area... |
| */ |
| static LPVOID DPMI_xrealloc( LPVOID ptr, DWORD newsize ) |
| { |
| MEMORY_BASIC_INFORMATION mbi; |
| |
| if (ptr) |
| { |
| LPVOID newptr; |
| |
| if (!VirtualQuery(ptr,&mbi,sizeof(mbi))) |
| { |
| FIXME( "realloc of DPMI_xallocd region %p?\n", ptr ); |
| return NULL; |
| } |
| |
| if (mbi.State == MEM_FREE) |
| { |
| FIXME( "realloc of DPMI_xallocd region %p?\n", ptr ); |
| return NULL; |
| } |
| |
| /* We do not shrink allocated memory. most reallocs |
| * only do grows anyway |
| */ |
| if (newsize <= mbi.RegionSize) |
| return ptr; |
| |
| newptr = DPMI_xalloc( newsize ); |
| if (!newptr) |
| return NULL; |
| |
| memcpy( newptr, ptr, mbi.RegionSize ); |
| DPMI_xfree( ptr ); |
| |
| return newptr; |
| } |
| |
| return DPMI_xalloc( newsize ); |
| } |
| |
| |
| void DPMI_CallRMCB32(RMCB *rmcb, UINT16 ss, DWORD esp, UINT16*es, DWORD*edi) |
| #if 0 /* original code, which early gccs puke on */ |
| { |
| int _clobber; |
| __asm__ __volatile__( |
| "pushl %%ebp\n" |
| "pushl %%ebx\n" |
| "pushl %%es\n" |
| "pushl %%ds\n" |
| "pushfl\n" |
| "mov %7,%%es\n" |
| "mov %5,%%ds\n" |
| ".byte 0x36, 0xff, 0x18\n" /* lcall *%ss:(%eax) */ |
| "popl %%ds\n" |
| "mov %%es,%0\n" |
| "popl %%es\n" |
| "popl %%ebx\n" |
| "popl %%ebp\n" |
| : "=d" (*es), "=D" (*edi), "=S" (_clobber), "=a" (_clobber), "=c" (_clobber) |
| : "0" (ss), "2" (esp), |
| "4" (rmcb->regs_sel), "1" (rmcb->regs_ofs), |
| "3" (&rmcb->proc_ofs) ); |
| } |
| #else /* code generated by a gcc new enough */ |
| ; |
| __ASM_GLOBAL_FUNC(DPMI_CallRMCB32, |
| "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") |
| "movl 0x8(%ebp),%eax\n\t" |
| "movl 0x10(%ebp),%esi\n\t" |
| "movl 0xc(%ebp),%edx\n\t" |
| "movl 0x10(%eax),%ecx\n\t" |
| "movl 0xc(%eax),%edi\n\t" |
| "addl $0x4,%eax\n\t" |
| "pushl %ebp\n\t" |
| "pushl %ebx\n\t" |
| "pushl %es\n\t" |
| "pushl %ds\n\t" |
| "pushfl\n\t" |
| "mov %cx,%es\n\t" |
| "mov %dx,%ds\n\t" |
| ".byte 0x36, 0xff, 0x18\n\t" /* lcall *%ss:(%eax) */ |
| "popl %ds\n\t" |
| "mov %es,%dx\n\t" |
| "popl %es\n\t" |
| "popl %ebx\n\t" |
| "popl %ebp\n\t" |
| "movl 0x14(%ebp),%eax\n\t" |
| "movw %dx,(%eax)\n\t" |
| "movl 0x18(%ebp),%edx\n\t" |
| "movl %edi,(%edx)\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") |
| #endif |
| |
| /********************************************************************** |
| * DPMI_CallRMCBProc |
| * |
| * This routine does the hard work of calling a callback procedure. |
| */ |
| static void DPMI_CallRMCBProc( CONTEXT *context, RMCB *rmcb, WORD flag ) |
| { |
| DWORD old_vif = get_vm86_teb_info()->dpmi_vif; |
| |
| /* Disable virtual interrupts. */ |
| get_vm86_teb_info()->dpmi_vif = 0; |
| |
| if (wine_ldt_is_system( rmcb->proc_sel )) { |
| /* Wine-internal RMCB, call directly */ |
| ((RMCBPROC)rmcb->proc_ofs)(context); |
| } else __TRY { |
| UINT16 ss,es; |
| DWORD esp,edi; |
| |
| INT_SetRealModeContext(MapSL(MAKESEGPTR( rmcb->regs_sel, rmcb->regs_ofs )), context); |
| ss = alloc_pm_selector( context->SegSs, WINE_LDT_FLAGS_DATA ); |
| esp = context->Esp; |
| |
| FIXME("untested!\n"); |
| |
| /* The called proc ends with an IRET, and takes these parameters: |
| * DS:ESI = pointer to real-mode SS:SP |
| * ES:EDI = pointer to real-mode call structure |
| * It returns: |
| * ES:EDI = pointer to real-mode call structure (may be a copy) |
| * It is the proc's responsibility to change the return CS:IP in the |
| * real-mode call structure. */ |
| if (flag & 1) { |
| /* 32-bit DPMI client */ |
| DPMI_CallRMCB32(rmcb, ss, esp, &es, &edi); |
| } else { |
| /* 16-bit DPMI client */ |
| CONTEXT ctx = *context; |
| ctx.SegCs = rmcb->proc_sel; |
| ctx.Eip = rmcb->proc_ofs; |
| ctx.SegDs = ss; |
| ctx.Esi = esp; |
| ctx.SegEs = rmcb->regs_sel; |
| ctx.Edi = rmcb->regs_ofs; |
| /* FIXME: I'm pretty sure this isn't right - should push flags first */ |
| WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&ctx ); |
| es = ctx.SegEs; |
| edi = ctx.Edi; |
| } |
| wine_ldt_free_entries( ss, 1 ); |
| INT_GetRealModeContext( MapSL( MAKESEGPTR( es, edi )), context); |
| } __EXCEPT(dpmi_exception_handler) { } __ENDTRY |
| |
| /* Restore virtual interrupt flag. */ |
| get_vm86_teb_info()->dpmi_vif = old_vif; |
| } |
| |
| |
| /********************************************************************** |
| * DPMI_CallRMProc |
| * |
| * This routine does the hard work of calling a real mode procedure. |
| */ |
| int DPMI_CallRMProc( CONTEXT *context, LPWORD stack, int args, int iret ) |
| { |
| LPWORD stack16; |
| LPVOID addr = NULL; /* avoid gcc warning */ |
| RMCB *CurrRMCB; |
| BOOL alloc = FALSE, already = FALSE; |
| BYTE *code; |
| |
| TRACE("EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n", |
| context->Eax, context->Ebx, context->Ecx, context->Edx ); |
| TRACE("ESI=%08x EDI=%08x ES=%04x DS=%04x CS:IP=%04x:%04x, %d WORD arguments, %s\n", |
| context->Esi, context->Edi, context->SegEs, context->SegDs, |
| context->SegCs, LOWORD(context->Eip), args, iret?"IRET":"FAR" ); |
| |
| callrmproc_again: |
| |
| /* there might be some code that just jumps to RMCBs or the like, |
| in which case following the jumps here might get us to a shortcut */ |
| code = CTX_SEG_OFF_TO_LIN(context, context->SegCs, context->Eip); |
| switch (*code) { |
| case 0xe9: /* JMP NEAR */ |
| context->Eip += 3 + *(WORD *)(code+1); |
| /* yeah, I know these gotos don't look good... */ |
| goto callrmproc_again; |
| case 0xea: /* JMP FAR */ |
| context->Eip = *(WORD *)(code+1); |
| context->SegCs = *(WORD *)(code+3); |
| /* ...but since the label is there anyway... */ |
| goto callrmproc_again; |
| case 0xeb: /* JMP SHORT */ |
| context->Eip += 2 + *(signed char *)(code+1); |
| /* ...because of other gotos below, so... */ |
| goto callrmproc_again; |
| } |
| |
| /* shortcut for chaining to internal interrupt handlers */ |
| if ((context->SegCs == 0xF000) && iret) |
| { |
| DOSVM_CallBuiltinHandler( context, LOWORD(context->Eip)/4 ); |
| return 0; |
| } |
| |
| /* shortcut for RMCBs */ |
| CurrRMCB = FirstRMCB; |
| |
| while (CurrRMCB && (HIWORD(CurrRMCB->address) != context->SegCs)) |
| CurrRMCB = CurrRMCB->next; |
| |
| if (!CurrRMCB && !MZ_Current()) |
| { |
| FIXME("DPMI real-mode call using DOS VM task system, not fully tested!\n"); |
| TRACE("creating VM86 task\n"); |
| MZ_AllocDPMITask(); |
| } |
| if (!already) { |
| if (!context->SegSs) { |
| alloc = TRUE; /* allocate default stack */ |
| stack16 = addr = DOSMEM_AllocBlock( 64, (UINT16 *)&(context->SegSs) ); |
| context->Esp = 64-2; |
| stack16 += 32-1; |
| if (!addr) { |
| ERR("could not allocate default stack\n"); |
| return 1; |
| } |
| } else { |
| stack16 = CTX_SEG_OFF_TO_LIN(context, context->SegSs, context->Esp); |
| } |
| context->Esp -= (args + (iret?1:0)) * sizeof(WORD); |
| stack16 -= args; |
| if (args) memcpy(stack16, stack, args*sizeof(WORD) ); |
| /* push flags if iret */ |
| if (iret) { |
| stack16--; args++; |
| *stack16 = LOWORD(context->EFlags); |
| } |
| /* push return address (return to interrupt wrapper) */ |
| *(--stack16) = DOSVM_dpmi_segments->wrap_seg; |
| *(--stack16) = 0; |
| /* adjust stack */ |
| context->Esp -= 2*sizeof(WORD); |
| already = TRUE; |
| } |
| |
| if (CurrRMCB) { |
| /* RMCB call, invoke protected-mode handler directly */ |
| DPMI_CallRMCBProc(context, CurrRMCB, dpmi_flag); |
| /* check if we returned to where we thought we would */ |
| if ((context->SegCs != DOSVM_dpmi_segments->wrap_seg) || |
| (LOWORD(context->Eip) != 0)) { |
| /* we need to continue at different address in real-mode space, |
| so we need to set it all up for real mode again */ |
| goto callrmproc_again; |
| } |
| } else { |
| TRACE("entering real mode...\n"); |
| DOSVM_Enter( context ); |
| TRACE("returned from real-mode call\n"); |
| } |
| if (alloc) DOSMEM_FreeBlock( addr ); |
| return 0; |
| } |
| |
| |
| /********************************************************************** |
| * CallRMInt |
| */ |
| static void DOSVM_CallRMInt( CONTEXT *context ) |
| { |
| CONTEXT realmode_ctx; |
| FARPROC16 rm_int = DOSVM_GetRMHandler( BL_reg(context) ); |
| REALMODECALL *call = CTX_SEG_OFF_TO_LIN( context, |
| context->SegEs, |
| context->Edi ); |
| INT_GetRealModeContext( call, &realmode_ctx ); |
| |
| /* we need to check if a real-mode program has hooked the interrupt */ |
| if (HIWORD(rm_int)!=0xF000) { |
| /* yup, which means we need to switch to real mode... */ |
| realmode_ctx.SegCs = HIWORD(rm_int); |
| realmode_ctx.Eip = LOWORD(rm_int); |
| if (DPMI_CallRMProc( &realmode_ctx, NULL, 0, TRUE)) |
| SET_CFLAG(context); |
| } else { |
| RESET_CFLAG(context); |
| /* use the IP we have instead of BL_reg, in case some apps |
| decide to move interrupts around for whatever reason... */ |
| DOSVM_CallBuiltinHandler( &realmode_ctx, LOWORD(rm_int)/4 ); |
| } |
| INT_SetRealModeContext( call, &realmode_ctx ); |
| } |
| |
| |
| /********************************************************************** |
| * CallRMProc |
| */ |
| static void DOSVM_CallRMProc( CONTEXT *context, int iret ) |
| { |
| REALMODECALL *p = CTX_SEG_OFF_TO_LIN( context, |
| context->SegEs, |
| context->Edi ); |
| CONTEXT context16; |
| |
| TRACE("RealModeCall: EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n", |
| p->eax, p->ebx, p->ecx, p->edx); |
| TRACE(" ESI=%08x EDI=%08x ES=%04x DS=%04x CS:IP=%04x:%04x, %d WORD arguments, %s\n", |
| p->esi, p->edi, p->es, p->ds, p->cs, p->ip, CX_reg(context), iret?"IRET":"FAR" ); |
| |
| if (!(p->cs) && !(p->ip)) { /* remove this check |
| if Int21/6501 case map function |
| has been implemented */ |
| SET_CFLAG(context); |
| return; |
| } |
| INT_GetRealModeContext(p, &context16); |
| DPMI_CallRMProc( &context16, ((LPWORD)MapSL(MAKESEGPTR(context->SegSs, LOWORD(context->Esp))))+3, |
| CX_reg(context), iret ); |
| INT_SetRealModeContext(p, &context16); |
| } |
| |
| |
| /* (see dosmem.c, function DOSMEM_InitDPMI) */ |
| static void StartPM( CONTEXT *context ) |
| { |
| UINT16 cs, ss, ds, es; |
| CONTEXT 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 DOSVM_Exit, we should release all |
| * allocated protected mode resources and call MZ_Exit |
| * using real mode context. See DPMI specification. |
| */ |
| DOSVM_Exit( 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 |
| } |
| |
| static RMCB *DPMI_AllocRMCB( void ) |
| { |
| RMCB *NewRMCB = HeapAlloc(GetProcessHeap(), 0, sizeof(RMCB)); |
| UINT16 uParagraph; |
| |
| if (NewRMCB) |
| { |
| LPVOID RMCBmem = DOSMEM_AllocBlock(4, &uParagraph); |
| LPBYTE p = RMCBmem; |
| |
| *p++ = 0xcd; /* RMCB: */ |
| *p++ = 0x31; /* int $0x31 */ |
| /* it is the called procedure's task to change the return CS:EIP |
| the DPMI 0.9 spec states that if it doesn't, it will be called again */ |
| *p++ = 0xeb; |
| *p++ = 0xfc; /* jmp RMCB */ |
| NewRMCB->address = MAKELONG(0, uParagraph); |
| NewRMCB->next = FirstRMCB; |
| FirstRMCB = NewRMCB; |
| } |
| return NewRMCB; |
| } |
| |
| |
| FARPROC16 DPMI_AllocInternalRMCB( RMCBPROC proc ) |
| { |
| RMCB *NewRMCB = DPMI_AllocRMCB(); |
| |
| if (NewRMCB) { |
| NewRMCB->proc_ofs = (DWORD)proc; |
| NewRMCB->proc_sel = 0; |
| NewRMCB->regs_ofs = 0; |
| NewRMCB->regs_sel = 0; |
| return (FARPROC16)(NewRMCB->address); |
| } |
| return NULL; |
| } |
| |
| |
| static BOOL DPMI_FreeRMCB( DWORD address ) |
| { |
| RMCB *CurrRMCB = FirstRMCB; |
| RMCB *PrevRMCB = NULL; |
| |
| while (CurrRMCB && (CurrRMCB->address != address)) |
| { |
| PrevRMCB = CurrRMCB; |
| CurrRMCB = CurrRMCB->next; |
| } |
| if (CurrRMCB) |
| { |
| if (PrevRMCB) |
| PrevRMCB->next = CurrRMCB->next; |
| else |
| FirstRMCB = CurrRMCB->next; |
| DOSMEM_FreeBlock(PTR_REAL_TO_LIN(SELECTOROF(CurrRMCB->address),OFFSETOF(CurrRMCB->address))); |
| HeapFree(GetProcessHeap(), 0, CurrRMCB); |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| |
| /********************************************************************** |
| * DOSVM_RawModeSwitchHandler |
| * |
| * DPMI Raw Mode Switch handler |
| */ |
| void WINAPI DOSVM_RawModeSwitchHandler( CONTEXT *context ) |
| { |
| CONTEXT rm_ctx; |
| int ret; |
| |
| /* initialize real-mode context as per spec */ |
| memset(&rm_ctx, 0, sizeof(rm_ctx)); |
| rm_ctx.SegDs = AX_reg(context); |
| rm_ctx.SegEs = CX_reg(context); |
| rm_ctx.SegSs = DX_reg(context); |
| rm_ctx.Esp = context->Ebx; |
| rm_ctx.SegCs = SI_reg(context); |
| rm_ctx.Eip = context->Edi; |
| rm_ctx.Ebp = context->Ebp; |
| rm_ctx.SegFs = 0; |
| rm_ctx.SegGs = 0; |
| |
| /* Copy interrupt state. */ |
| if (get_vm86_teb_info()->dpmi_vif) |
| rm_ctx.EFlags = V86_FLAG | VIF_MASK; |
| else |
| rm_ctx.EFlags = V86_FLAG; |
| |
| /* enter real mode again */ |
| TRACE("re-entering real mode at %04x:%04x\n",rm_ctx.SegCs,rm_ctx.Eip); |
| ret = DOSVM_Enter( &rm_ctx ); |
| /* when the real-mode stuff call its mode switch address, |
| DOSVM_Enter will return and we will continue here */ |
| |
| if (ret<0) { |
| ERR("Sync lost!\n"); |
| /* if the sync was lost, there's no way to recover */ |
| ExitProcess(1); |
| } |
| |
| /* alter protected-mode context as per spec */ |
| context->SegDs = LOWORD(rm_ctx.Eax); |
| context->SegEs = LOWORD(rm_ctx.Ecx); |
| context->SegSs = LOWORD(rm_ctx.Edx); |
| context->Esp = rm_ctx.Ebx; |
| context->SegCs = LOWORD(rm_ctx.Esi); |
| context->Eip = rm_ctx.Edi; |
| context->Ebp = rm_ctx.Ebp; |
| context->SegFs = 0; |
| context->SegGs = 0; |
| |
| /* Copy interrupt state. */ |
| if (rm_ctx.EFlags & VIF_MASK) |
| get_vm86_teb_info()->dpmi_vif = 1; |
| else |
| get_vm86_teb_info()->dpmi_vif = 0; |
| |
| /* Return to new address and hope that we didn't mess up */ |
| TRACE("re-entering protected mode at %04x:%08x\n", |
| context->SegCs, context->Eip); |
| } |
| |
| |
| /********************************************************************** |
| * AllocRMCB |
| */ |
| static void DOSVM_AllocRMCB( CONTEXT *context ) |
| { |
| RMCB *NewRMCB = DPMI_AllocRMCB(); |
| |
| TRACE("Function to call: %04x:%04x\n", (WORD)context->SegDs, SI_reg(context) ); |
| |
| if (NewRMCB) |
| { |
| NewRMCB->proc_ofs = DOSVM_IsDos32() ? context->Esi : LOWORD(context->Esi); |
| NewRMCB->proc_sel = context->SegDs; |
| NewRMCB->regs_ofs = DOSVM_IsDos32() ? context->Edi : LOWORD(context->Edi); |
| NewRMCB->regs_sel = context->SegEs; |
| SET_CX( context, HIWORD(NewRMCB->address) ); |
| SET_DX( context, LOWORD(NewRMCB->address) ); |
| } |
| else |
| { |
| SET_AX( context, 0x8015 ); /* callback unavailable */ |
| SET_CFLAG(context); |
| } |
| } |
| |
| |
| /********************************************************************** |
| * FreeRMCB |
| */ |
| static void DOSVM_FreeRMCB( CONTEXT *context ) |
| { |
| FIXME("callback address: %04x:%04x\n", |
| CX_reg(context), DX_reg(context)); |
| |
| if (!DPMI_FreeRMCB(MAKELONG(DX_reg(context), CX_reg(context)))) { |
| SET_AX( context, 0x8024 ); /* invalid callback address */ |
| SET_CFLAG(context); |
| } |
| } |
| |
| |
| static BYTE * XMS_Offset( MOVEOFS *ofs ) |
| { |
| if (ofs->Handle) return (BYTE*)GlobalLock16(ofs->Handle)+ofs->Offset; |
| else return PTR_REAL_TO_LIN(SELECTOROF(ofs->Offset),OFFSETOF(ofs->Offset)); |
| } |
| |
| /********************************************************************** |
| * XMS_Handler |
| */ |
| static void XMS_Handler( CONTEXT *context ) |
| { |
| switch(AH_reg(context)) |
| { |
| case 0x00: /* Get XMS version number */ |
| TRACE("get XMS version number\n"); |
| SET_AX( context, 0x0200 ); /* 2.0 */ |
| SET_BX( context, 0x0000 ); /* internal revision */ |
| SET_DX( context, 0x0001 ); /* HMA exists */ |
| break; |
| case 0x08: /* Query Free Extended Memory */ |
| { |
| MEMORYSTATUS status; |
| |
| TRACE("query free extended memory\n"); |
| GlobalMemoryStatus( &status ); |
| SET_DX( context, status.dwAvailVirtual >> 10 ); |
| SET_AX( context, status.dwAvailVirtual >> 10 ); |
| TRACE("returning largest %dK, total %dK\n", AX_reg(context), DX_reg(context)); |
| } |
| break; |
| case 0x09: /* Allocate Extended Memory Block */ |
| TRACE("allocate extended memory block (%dK)\n", |
| DX_reg(context)); |
| SET_DX( context, GlobalAlloc16(GMEM_MOVEABLE, (DWORD)DX_reg(context)<<10) ); |
| SET_AX( context, DX_reg(context) ? 1 : 0 ); |
| if (!DX_reg(context)) SET_BL( context, 0xA0 ); /* out of memory */ |
| break; |
| case 0x0a: /* Free Extended Memory Block */ |
| TRACE("free extended memory block %04x\n",DX_reg(context)); |
| if(!DX_reg(context) || GlobalFree16(DX_reg(context))) { |
| SET_AX( context, 0 ); /* failure */ |
| SET_BL( context, 0xa2 ); /* invalid handle */ |
| } else |
| SET_AX( context, 1 ); /* success */ |
| break; |
| case 0x0b: /* Move Extended Memory Block */ |
| { |
| MOVESTRUCT*move=CTX_SEG_OFF_TO_LIN(context, |
| context->SegDs,context->Esi); |
| BYTE*src,*dst; |
| TRACE("move extended memory block\n"); |
| src=XMS_Offset(&move->Source); |
| dst=XMS_Offset(&move->Dest); |
| memcpy(dst,src,move->Length); |
| if (move->Source.Handle) GlobalUnlock16(move->Source.Handle); |
| if (move->Dest.Handle) GlobalUnlock16(move->Dest.Handle); |
| break; |
| } |
| case 0x88: /* Query Any Free Extended Memory */ |
| { |
| MEMORYSTATUS status; |
| SYSTEM_INFO info; |
| |
| TRACE("query any free extended memory\n"); |
| |
| GlobalMemoryStatus( &status ); |
| GetSystemInfo( &info ); |
| context->Eax = status.dwAvailVirtual >> 10; |
| context->Edx = status.dwAvailVirtual >> 10; |
| context->Ecx = (DWORD)info.lpMaximumApplicationAddress; |
| SET_BL( context, 0 ); /* No errors. */ |
| |
| TRACE("returning largest %dK, total %dK, highest 0x%x\n", |
| context->Eax, context->Edx, context->Ecx); |
| } |
| break; |
| default: |
| INT_BARF( context, 0x31 ); |
| SET_AX( context, 0x0000 ); /* failure */ |
| SET_BL( context, 0x80 ); /* function not implemented */ |
| break; |
| } |
| } |
| |
| |
| /********************************************************************** |
| * DOSVM_CheckWrappers |
| * |
| * Check if this was really a wrapper call instead of an interrupt. |
| */ |
| BOOL DOSVM_CheckWrappers( CONTEXT *context ) |
| { |
| if (context->SegCs==DOSVM_dpmi_segments->dpmi_seg) { |
| /* This is the protected mode switch */ |
| StartPM(context); |
| return TRUE; |
| } |
| else if (context->SegCs==DOSVM_dpmi_segments->xms_seg) |
| { |
| /* This is the XMS driver entry point */ |
| XMS_Handler(context); |
| return TRUE; |
| } |
| else |
| { |
| /* Check for RMCB */ |
| RMCB *CurrRMCB = FirstRMCB; |
| |
| while (CurrRMCB && (HIWORD(CurrRMCB->address) != context->SegCs)) |
| CurrRMCB = CurrRMCB->next; |
| |
| if (CurrRMCB) { |
| /* RMCB call, propagate to protected-mode handler */ |
| DPMI_CallRMCBProc(context, CurrRMCB, dpmi_flag); |
| return TRUE; |
| } |
| } |
| |
| return FALSE; |
| } |
| |
| /********************************************************************** |
| * DOSVM_Int31Handler |
| * |
| * Handler for int 31h (DPMI). |
| */ |
| void WINAPI DOSVM_Int31Handler( CONTEXT *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%08x)\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%08x)\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 = 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 = 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 interrupt 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%08x)\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; |
| SYSTEM_BASIC_INFORMATION sbi; |
| |
| /* 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 ); |
| NtQuerySystemInformation( SystemBasicInformation, &sbi, sizeof(sbi), NULL ); |
| |
| info->wPageSize = sbi.PageSize; |
| 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 (%u bytes)\n", size ); |
| |
| ptr = 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%08x)\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%08x, %u bytes)\n", handle, size ); |
| |
| ptr = 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 */ |
| { |
| SYSTEM_BASIC_INFORMATION info; |
| TRACE("get pagesize\n"); |
| NtQuerySystemInformation( SystemBasicInformation, &info, sizeof(info), NULL ); |
| SET_BX( context, HIWORD(info.PageSize) ); |
| SET_CX( context, LOWORD(info.PageSize) ); |
| 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%08x) - 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: %d\n", |
| get_vm86_teb_info()->dpmi_vif ); |
| SET_AL( context, get_vm86_teb_info()->dpmi_vif ? 1 : 0 ); |
| get_vm86_teb_info()->dpmi_vif = 0; |
| break; |
| |
| case 0x0901: /* Get and Enable Virtual Interrupt State */ |
| TRACE( "Get and Enable Virtual Interrupt State: %d\n", |
| get_vm86_teb_info()->dpmi_vif ); |
| SET_AL( context, get_vm86_teb_info()->dpmi_vif ? 1 : 0 ); |
| get_vm86_teb_info()->dpmi_vif = 1; |
| break; |
| |
| case 0x0902: /* Get Virtual Interrupt State */ |
| TRACE( "Get Virtual Interrupt State: %d\n", |
| get_vm86_teb_info()->dpmi_vif ); |
| SET_AL( context, get_vm86_teb_info()->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; |
| } |
| } |
