[aandrejevic] 68110: [NTVDM] Make fast memory hooks FASTCALL. Only register the VGA memory hook for the region that needs to be hooked.
Author: aandrejevic Date: Fri Jun 12 16:25:23 2015 New Revision: 68110
URL: http://svn.reactos.org/svn/reactos?rev=68110&view=rev Log: [NTVDM] Make fast memory hooks FASTCALL. Only register the VGA memory hook for the region that needs to be hooked.
Modified: trunk/reactos/subsystems/mvdm/ntvdm/bios/bios.c trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.h trunk/reactos/subsystems/mvdm/ntvdm/memory.h
Modified: trunk/reactos/subsystems/mvdm/ntvdm/bios/bios.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/bios/... ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/bios/bios.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/bios/bios.c [iso-8859-1] Fri Jun 12 16:25:23 2015 @@ -42,7 +42,7 @@
/* PRIVATE FUNCTIONS **********************************************************/
-static BOOLEAN NTAPI BiosRomWrite(ULONG Address, PVOID Buffer, ULONG Size) +static BOOLEAN FASTCALL BiosRomWrite(ULONG Address, PVOID Buffer, ULONG Size) { /* Prevent writing to ROM */ return FALSE;
Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/d... ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c [iso-8859-1] Fri Jun 12 16:25:23 2015 @@ -402,7 +402,7 @@ } }
-static VOID NTAPI EmsReadMemory(ULONG Address, PVOID Buffer, ULONG Size) +static VOID FASTCALL EmsReadMemory(ULONG Address, PVOID Buffer, ULONG Size) { ULONG i; ULONG RelativeAddress = Address - TO_LINEAR(EMS_SEGMENT, 0); @@ -422,7 +422,7 @@ } }
-static BOOLEAN NTAPI EmsWriteMemory(ULONG Address, PVOID Buffer, ULONG Size) +static BOOLEAN FASTCALL EmsWriteMemory(ULONG Address, PVOID Buffer, ULONG Size) { ULONG i; ULONG RelativeAddress = Address - TO_LINEAR(EMS_SEGMENT, 0);
Modified: trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/hardw... ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.c [iso-8859-1] Fri Jun 12 16:25:23 2015 @@ -21,8 +21,8 @@
/* PRIVATE VARIABLES **********************************************************/
-static CONST DWORD MemoryBase[] = { 0xA0000, 0xA0000, 0xB0000, 0xB8000 }; -static CONST DWORD MemoryLimit[] = { 0xBFFFF, 0xAFFFF, 0xB7FFF, 0xBFFFF }; +static CONST DWORD MemoryBase[] = { 0xA0000, 0xA0000, 0xB0000, 0xB8000 }; +static CONST DWORD MemorySize[] = { 0x20000, 0x10000, 0x8000, 0x8000 };
/* * Activate this line if you want to use the real @@ -429,11 +429,6 @@ return MemoryBase[(VgaGcRegisters[VGA_GC_MISC_REG] >> 2) & 0x03]; }
-static inline DWORD VgaGetVideoLimitAddress(VOID) -{ - return MemoryLimit[(VgaGcRegisters[VGA_GC_MISC_REG] >> 2) & 0x03]; -} - static VOID VgaUpdateCursorPosition(VOID) { /* @@ -1535,6 +1530,20 @@ { case VGA_GC_MISC_REG: { + /* Remove any existing VGA memory hook */ + MemRemoveFastMemoryHook((PVOID)0xA0000, 0x20000); + + if (VgaMiscRegister & VGA_MISC_RAM_ENABLED) + { + UCHAR MemoryMap = (VgaGcRegisters[VGA_GC_MISC_REG] >> 2) & 0x03; + + /* Register a memory hook */ + MemInstallFastMemoryHook((PVOID)MemoryBase[MemoryMap], + MemorySize[MemoryMap], + VgaReadMemory, + VgaWriteMemory); + } + /* The GC misc register decides if it's text or graphics mode */ ModeChanged = TRUE; break; @@ -1687,7 +1696,20 @@ UnregisterIoPort(0x3DA); // VGA_INSTAT1_READ_COLOR, VGA_FEATURE_WRITE_COLOR }
- // if (VgaMiscRegister & 0x02) { /* Enable RAM access */ } else { /* Disable RAM access */ } + /* Remove any existing VGA memory hook */ + MemRemoveFastMemoryHook((PVOID)0xA0000, 0x20000); + + if (VgaMiscRegister & VGA_MISC_RAM_ENABLED) + { + UCHAR MemoryMap = (VgaGcRegisters[VGA_GC_MISC_REG] >> 2) & 0x03; + + /* Register a memory hook */ + MemInstallFastMemoryHook((PVOID)MemoryBase[MemoryMap], + MemorySize[MemoryMap], + VgaReadMemory, + VgaWriteMemory); + } + break; }
@@ -1946,7 +1968,7 @@ VgaVerticalRetrace(0); }
-VOID NTAPI VgaReadMemory(ULONG Address, PVOID Buffer, ULONG Size) +VOID FASTCALL VgaReadMemory(ULONG Address, PVOID Buffer, ULONG Size) { DWORD i, j; DWORD VideoAddress; @@ -2007,7 +2029,7 @@ VgaLatchRegisters[3] = VgaMemory[(3 * VGA_BANK_SIZE) + LOWORD(VideoAddress)]; }
-BOOLEAN NTAPI VgaWriteMemory(ULONG Address, PVOID Buffer, ULONG Size) +BOOLEAN FASTCALL VgaWriteMemory(ULONG Address, PVOID Buffer, ULONG Size) { DWORD i, j; DWORD VideoAddress; @@ -2177,9 +2199,6 @@
/* Clear the VGA memory */ VgaClearMemory(); - - /* Register the memory hook */ - MemInstallFastMemoryHook((PVOID)0xA0000, 0x20000, VgaReadMemory, VgaWriteMemory);
/* Register the I/O Ports */ RegisterIoPort(0x3CC, VgaReadPort, NULL); // VGA_MISC_READ
Modified: trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/hardw... ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.h [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/vga.h [iso-8859-1] Fri Jun 12 16:25:23 2015 @@ -256,6 +256,8 @@
COORD VgaGetDisplayResolution(VOID); VOID VgaRefreshDisplay(VOID); +VOID FASTCALL VgaReadMemory(ULONG Address, PVOID Buffer, ULONG Size); +BOOLEAN FASTCALL VgaWriteMemory(ULONG Address, PVOID Buffer, ULONG Size); VOID VgaWriteFont(UINT FontNumber, CONST UCHAR *FontData, UINT Height); VOID VgaClearMemory(VOID); BOOLEAN VgaGetDoubleVisionState(PBOOLEAN Horizontal, PBOOLEAN Vertical);
Modified: trunk/reactos/subsystems/mvdm/ntvdm/memory.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/memor... ============================================================================== --- trunk/reactos/subsystems/mvdm/ntvdm/memory.h [iso-8859-1] (original) +++ trunk/reactos/subsystems/mvdm/ntvdm/memory.h [iso-8859-1] Fri Jun 12 16:25:23 2015 @@ -14,7 +14,7 @@ #define TOTAL_PAGES (MAX_ADDRESS / PAGE_SIZE)
typedef VOID -(WINAPI *PMEMORY_READ_HANDLER) +(FASTCALL *PMEMORY_READ_HANDLER) ( ULONG Address, PVOID Buffer, @@ -22,7 +22,7 @@ );
typedef BOOLEAN -(WINAPI *PMEMORY_WRITE_HANDLER) +(FASTCALL *PMEMORY_WRITE_HANDLER) ( ULONG Address, PVOID Buffer,
-
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