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[aandrejevic] 60939: [FAST486] Fix Fast486GetCurrentPrivLevel.
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 15:27:54 2013 New Revision: 60939 URL: http://svn.reactos.org/svn/reactos?rev=60939&view=rev Log: [FAST486] Fix Fast486GetCurrentPrivLevel. Modified: branches/ntvdm/lib/fast486/common.h Modified: branches/ntvdm/lib/fast486/common.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/common.h?rev=… ============================================================================== --- branches/ntvdm/lib/fast486/common.h [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/common.h [iso-8859-1] Mon Nov 11 15:27:54 2013 @@ -167,7 +167,16 @@ INT Fast486GetCurrentPrivLevel(PFAST486_STATE State) { - return GET_SEGMENT_RPL(State->SegmentRegs[FAST486_REG_CS].Selector); + if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE) + { + /* In protected mode, return the RPL of the CS */ + return GET_SEGMENT_RPL(State->SegmentRegs[FAST486_REG_CS].Selector); + } + else + { + /* Real mode is always in supervisor mode */ + return 0; + } } #include "common.inl"

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[aandrejevic] 60938: [NTVDM] Implement the miscellaneous BIOS system service (INT 15h) handler. Implement INT 15h, AH = 88h, "Get Extended Memory Size".
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 04:00:10 2013 New Revision: 60938 URL: http://svn.reactos.org/svn/reactos?rev=60938&view=rev Log: [NTVDM] Implement the miscellaneous BIOS system service (INT 15h) handler. Implement INT 15h, AH = 88h, "Get Extended Memory Size". Modified: branches/ntvdm/subsystems/ntvdm/bios.c branches/ntvdm/subsystems/ntvdm/bios.h Modified: branches/ntvdm/subsystems/ntvdm/bios.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/bios.c?r… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/bios.c [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/bios.c [iso-8859-1] Mon Nov 11 04:00:10 2013 @@ -481,6 +481,7 @@ RegisterInt32(BIOS_VIDEO_INTERRUPT , BiosVideoService ); RegisterInt32(BIOS_EQUIPMENT_INTERRUPT, BiosEquipmentService ); RegisterInt32(BIOS_MEMORY_SIZE , BiosGetMemorySize ); + RegisterInt32(BIOS_MISC_INTERRUPT , BiosMiscService ); RegisterInt32(BIOS_KBD_INTERRUPT , BiosKeyboardService ); RegisterInt32(BIOS_TIME_INTERRUPT , BiosTimeService ); RegisterInt32(BIOS_SYS_TIMER_INTERRUPT, BiosSystemTimerInterrupt); @@ -1174,6 +1175,30 @@ { /* Return the conventional memory size in kB, typically 640 kB */ setAX(Bda->MemorySize); +} + +VOID WINAPI BiosMiscService(LPWORD Stack) +{ + switch (getAH()) + { + /* Get Extended Memory Size */ + case 0x88: + { + /* Return the number of KB of RAM after 1 MB */ + setAX((MAX_ADDRESS - 0x100000) / 1024); + + /* Clear CF */ + Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF; + + break; + } + + default: + { + DPRINT1("BIOS Function INT 15h, AH = 0x%02X NOT IMPLEMENTED\n", + getAH()); + } + } } VOID WINAPI BiosKeyboardService(LPWORD Stack) Modified: branches/ntvdm/subsystems/ntvdm/bios.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/bios.h?r… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/bios.h [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/bios.h [iso-8859-1] Mon Nov 11 04:00:10 2013 @@ -27,6 +27,7 @@ #define BIOS_VIDEO_INTERRUPT 0x10 #define BIOS_EQUIPMENT_INTERRUPT 0x11 #define BIOS_MEMORY_SIZE 0x12 +#define BIOS_MISC_INTERRUPT 0x15 #define BIOS_KBD_INTERRUPT 0x16 #define BIOS_TIME_INTERRUPT 0x1A #define BIOS_SYS_TIMER_INTERRUPT 0x1C @@ -171,6 +172,7 @@ VOID WINAPI BiosVideoService(LPWORD Stack); VOID WINAPI BiosEquipmentService(LPWORD Stack); VOID WINAPI BiosGetMemorySize(LPWORD Stack); +VOID WINAPI BiosMiscService(LPWORD Stack); VOID WINAPI BiosKeyboardService(LPWORD Stack); VOID WINAPI BiosTimeService(LPWORD Stack); VOID WINAPI BiosSystemTimerInterrupt(LPWORD Stack);

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[aandrejevic] 60937: [NTVDM] Give the virtual machine 16 MB of memory, for DOS extenders, protected mode programs, etc... EMS is still not implemented.
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 03:45:39 2013 New Revision: 60937 URL: http://svn.reactos.org/svn/reactos?rev=60937&view=rev Log: [NTVDM] Give the virtual machine 16 MB of memory, for DOS extenders, protected mode programs, etc... EMS is still not implemented. Modified: branches/ntvdm/subsystems/ntvdm/ntvdm.h Modified: branches/ntvdm/subsystems/ntvdm/ntvdm.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/ntvdm.h?… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/ntvdm.h [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/ntvdm.h [iso-8859-1] Mon Nov 11 03:45:39 2013 @@ -25,7 +25,7 @@ #define TO_LINEAR(seg, off) (((seg) << 4) + (off)) #define MAX_SEGMENT 0xFFFF #define MAX_OFFSET 0xFFFF -#define MAX_ADDRESS TO_LINEAR(MAX_SEGMENT, MAX_OFFSET) +#define MAX_ADDRESS 0x1000000 // 16 MB of RAM #define FAR_POINTER(x) \ (PVOID)((ULONG_PTR)BaseAddress + TO_LINEAR(HIWORD(x), LOWORD(x)))

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[aandrejevic] 60936: [FAST486] Fix a bug in the LDS and LES instructions.
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 03:16:07 2013 New Revision: 60936 URL: http://svn.reactos.org/svn/reactos?rev=60936&view=rev Log: [FAST486] Fix a bug in the LDS and LES instructions. Modified: branches/ntvdm/lib/fast486/opcodes.c Modified: branches/ntvdm/lib/fast486/opcodes.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/opcodes.c?rev… ============================================================================== --- branches/ntvdm/lib/fast486/opcodes.c [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/opcodes.c [iso-8859-1] Mon Nov 11 03:16:07 2013 @@ -4314,6 +4314,7 @@ OperandSize = AddressSize = State->SegmentRegs[FAST486_REG_CS].Size; + TOGGLE_OPSIZE(OperandSize); TOGGLE_ADSIZE(AddressSize); /* Get the operands */

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[aandrejevic] 60935: [FAST486] Implement the LSS instruction. Fix a bug in LFS and LGS.
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 03:14:18 2013 New Revision: 60935 URL: http://svn.reactos.org/svn/reactos?rev=60935&view=rev Log: [FAST486] Implement the LSS instruction. Fix a bug in LFS and LGS. Modified: branches/ntvdm/lib/fast486/extraops.c branches/ntvdm/lib/fast486/extraops.h Modified: branches/ntvdm/lib/fast486/extraops.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/extraops.c?re… ============================================================================== --- branches/ntvdm/lib/fast486/extraops.c [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/extraops.c [iso-8859-1] Mon Nov 11 03:14:18 2013 @@ -215,7 +215,7 @@ Fast486ExtOpcodeImul, Fast486ExtOpcodeCmpXchgByte, Fast486ExtOpcodeCmpXchg, - NULL, // TODO: OPCODE 0xB2 NOT IMPLEMENTED + Fast486ExtOpcodeLss, Fast486ExtOpcodeBtr, Fast486ExtOpcodeLfsLgs, Fast486ExtOpcodeLfsLgs, @@ -1102,6 +1102,74 @@ return TRUE; } +FAST486_OPCODE_HANDLER(Fast486ExtOpcodeLss) +{ + UCHAR FarPointer[6]; + BOOLEAN OperandSize, AddressSize; + FAST486_MOD_REG_RM ModRegRm; + + /* Make sure this is the right instruction */ + ASSERT(Opcode == 0xB2); + + OperandSize = AddressSize = State->SegmentRegs[FAST486_REG_CS].Size; + + TOGGLE_OPSIZE(OperandSize); + TOGGLE_ADSIZE(AddressSize); + + /* Get the operands */ + if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm)) + { + /* Exception occurred */ + return FALSE; + } + + if (!ModRegRm.Memory) + { + /* Invalid */ + Fast486Exception(State, FAST486_EXCEPTION_UD); + return FALSE; + } + + if (!Fast486ReadMemory(State, + (State->PrefixFlags & FAST486_PREFIX_SEG) + ? State->SegmentOverride : FAST486_REG_DS, + ModRegRm.MemoryAddress, + FALSE, + FarPointer, + OperandSize ? 6 : 4)) + { + /* Exception occurred */ + return FALSE; + } + + if (OperandSize) + { + ULONG Offset = *((PULONG)FarPointer); + USHORT Segment = *((PUSHORT)&FarPointer[sizeof(ULONG)]); + + /* Set the register to the offset */ + State->GeneralRegs[ModRegRm.Register].Long = Offset; + + /* Load the segment */ + return Fast486LoadSegment(State, + FAST486_REG_SS, + Segment); + } + else + { + USHORT Offset = *((PUSHORT)FarPointer); + USHORT Segment = *((PUSHORT)&FarPointer[sizeof(USHORT)]); + + /* Set the register to the offset */ + State->GeneralRegs[ModRegRm.Register].LowWord = Offset; + + /* Load the segment */ + return Fast486LoadSegment(State, + FAST486_REG_SS, + Segment); + } +} + FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBtr) { BOOLEAN OperandSize, AddressSize; @@ -1204,6 +1272,7 @@ OperandSize = AddressSize = State->SegmentRegs[FAST486_REG_CS].Size; + TOGGLE_OPSIZE(OperandSize); TOGGLE_ADSIZE(AddressSize); /* Get the operands */ Modified: branches/ntvdm/lib/fast486/extraops.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/extraops.h?re… ============================================================================== --- branches/ntvdm/lib/fast486/extraops.h [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/extraops.h [iso-8859-1] Mon Nov 11 03:14:18 2013 @@ -42,6 +42,7 @@ FAST486_OPCODE_HANDLER(Fast486ExtOpcodeImul); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeCmpXchgByte); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeCmpXchg); +FAST486_OPCODE_HANDLER(Fast486ExtOpcodeLss); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBtr); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeLfsLgs); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeMovzxByte);

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[hbelusca] 60934: [NTVDM]: Fix CMOS file sharing access (so that we allow multiple ntvdm running with the same cmos data).
by hbelusca＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: hbelusca Date: Mon Nov 11 02:35:06 2013 New Revision: 60934 URL: http://svn.reactos.org/svn/reactos?rev=60934&view=rev Log: [NTVDM]: Fix CMOS file sharing access (so that we allow multiple ntvdm running with the same cmos data). Modified: branches/ntvdm/subsystems/ntvdm/cmos.c branches/ntvdm/subsystems/ntvdm/cmos.h Modified: branches/ntvdm/subsystems/ntvdm/cmos.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/cmos.c?r… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/cmos.c [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/cmos.c [iso-8859-1] Mon Nov 11 02:35:06 2013 @@ -366,11 +366,11 @@ /* Clear the CMOS memory */ ZeroMemory(&CmosMemory, sizeof(CmosMemory)); - /* Always open (and if needed, create) a RAM file with exclusive access */ + /* Always open (and if needed, create) a RAM file with shared access */ SetLastError(0); // For debugging purposes hCmosRam = CreateFileW(L"cmos.ram", GENERIC_READ | GENERIC_WRITE, - 0, + FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, Modified: branches/ntvdm/subsystems/ntvdm/cmos.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/cmos.h?r… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/cmos.h [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/cmos.h [iso-8859-1] Mon Nov 11 02:35:06 2013 @@ -77,6 +77,8 @@ * See the following documentation for more information: * http://www.intel-assembler.it/portale/5/cmos-memory-map-123/cmos-memory-map… * http://wiki.osdev.org/CMOS + * http://www.walshcomptech.com/ohlandl/config/cmos_registers.html + * http://www.fysnet.net/cmosinfo.htm * http://www.bioscentral.com/misc/cmosmap.htm */ #pragma pack(push, 1)

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[aandrejevic] 60933: [NTVDM] To make debugging easier, put the interrupt handlers at offset 0x1000, and reserve 16 bytes for each. Also, move the common stub to offset 0x2000. That way the entry po...
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 02:27:29 2013 New Revision: 60933 URL: http://svn.reactos.org/svn/reactos?rev=60933&view=rev Log: [NTVDM] To make debugging easier, put the interrupt handlers at offset 0x1000, and reserve 16 bytes for each. Also, move the common stub to offset 0x2000. That way the entry point of, for example, INT 0x21 is at F000:1210. Modified: branches/ntvdm/subsystems/ntvdm/int32.c branches/ntvdm/subsystems/ntvdm/int32.h Modified: branches/ntvdm/subsystems/ntvdm/int32.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/int32.c?… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/int32.c [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/int32.c [iso-8859-1] Mon Nov 11 02:27:29 2013 @@ -131,11 +131,31 @@ LPDWORD IntVecTable = (LPDWORD)BaseAddress; LPBYTE BiosCode = (LPBYTE)SEG_OFF_TO_PTR(BiosSegment, 0); USHORT i; - WORD CommonStub, BopSeqOffset, Offset; + WORD BopSeqOffset, Offset = 0; - CommonStub = Offset = 0; + /* Generate ISR stubs and fill the IVT */ + for (i = 0x00; i <= 0xFF; i++) + { + Offset = INT_HANDLER_OFFSET + (i << 4); + IntVecTable[i] = MAKELONG(Offset, BiosSegment); + + BiosCode[Offset++] = 0xFA; // cli + + BiosCode[Offset++] = 0x6A; // push i + BiosCode[Offset++] = (UCHAR)i; + + BiosCode[Offset++] = 0x6A; // push 0 + BiosCode[Offset++] = 0x00; + + BopSeqOffset = COMMON_STUB_OFFSET - (Offset + 3); + + BiosCode[Offset++] = 0xE9; // jmp near BOP_SEQ + BiosCode[Offset++] = LOBYTE(BopSeqOffset); + BiosCode[Offset++] = HIBYTE(BopSeqOffset); + } /* Write the common stub code */ + Offset = COMMON_STUB_OFFSET; // BOP_SEQ: BiosCode[Offset++] = 0xF8; // clc @@ -162,26 +182,6 @@ BiosCode[Offset++] = 0x04; BiosCode[Offset++] = 0xCF; // iret - - /* Generate ISR stubs and fill the IVT */ - for (i = 0x00; i <= 0xFF; i++) - { - IntVecTable[i] = MAKELONG(Offset, BiosSegment); - - BiosCode[Offset++] = 0xFA; // cli - - BiosCode[Offset++] = 0x6A; // push i - BiosCode[Offset++] = (UCHAR)i; - - BiosCode[Offset++] = 0x6A; // push 0 - BiosCode[Offset++] = 0x00; - - BopSeqOffset = CommonStub - (Offset + 3); - - BiosCode[Offset++] = 0xE9; // jmp near BOP_SEQ - BiosCode[Offset++] = LOBYTE(BopSeqOffset); - BiosCode[Offset++] = HIBYTE(BopSeqOffset); - } } VOID WINAPI RegisterInt32(BYTE IntNumber, EMULATOR_INT32_PROC IntHandler) Modified: branches/ntvdm/subsystems/ntvdm/int32.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/int32.h?… ============================================================================== --- branches/ntvdm/subsystems/ntvdm/int32.h [iso-8859-1] (original) +++ branches/ntvdm/subsystems/ntvdm/int32.h [iso-8859-1] Mon Nov 11 02:27:29 2013 @@ -18,6 +18,9 @@ /* 32-bit Interrupt Identifiers */ #define EMULATOR_MAX_INT32_NUM 0xFF + 1 +#define INT_HANDLER_OFFSET 0x1000 +#define COMMON_STUB_OFFSET 0x2000 + /* FUNCTIONS ******************************************************************/ typedef VOID (WINAPI *EMULATOR_INT32_PROC)(LPWORD Stack);

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[aandrejevic] 60932: [FAST486] We don't support in-circuit emulation opcodes such as USERMOV. The 486 does not have the JMPE or POPCNT instructions.
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 01:14:24 2013 New Revision: 60932 URL: http://svn.reactos.org/svn/reactos?rev=60932&view=rev Log: [FAST486] We don't support in-circuit emulation opcodes such as USERMOV. The 486 does not have the JMPE or POPCNT instructions. Modified: branches/ntvdm/lib/fast486/extraops.c Modified: branches/ntvdm/lib/fast486/extraops.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/extraops.c?re… ============================================================================== --- branches/ntvdm/lib/fast486/extraops.c [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/extraops.c [iso-8859-1] Mon Nov 11 01:14:24 2013 @@ -53,10 +53,10 @@ NULL, // Invalid NULL, // Invalid NULL, // Invalid - NULL, // TODO: OPCODE 0x10 NOT IMPLEMENTED - NULL, // TODO: OPCODE 0x11 NOT IMPLEMENTED - NULL, // TODO: OPCODE 0x12 NOT IMPLEMENTED - NULL, // TODO: OPCODE 0x13 NOT IMPLEMENTED + NULL, // Invalid + NULL, // Invalid + NULL, // Invalid + NULL, // Invalid NULL, // Invalid NULL, // Invalid NULL, // Invalid @@ -221,7 +221,7 @@ Fast486ExtOpcodeLfsLgs, Fast486ExtOpcodeMovzxByte, Fast486ExtOpcodeMovzxWord, - NULL, // TODO: OPCODE 0xB8 NOT IMPLEMENTED + NULL, // Invalid Fast486OpcodeGroup0FB9, Fast486OpcodeGroup0FBA, Fast486ExtOpcodeBtc,

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[hbelusca] 60931: [FAST486]: Remove an extra "return TRUE; "
by hbelusca＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: hbelusca Date: Mon Nov 11 01:02:48 2013 New Revision: 60931 URL: http://svn.reactos.org/svn/reactos?rev=60931&view=rev Log: [FAST486]: Remove an extra "return TRUE;" Modified: branches/ntvdm/lib/fast486/opgroups.c Modified: branches/ntvdm/lib/fast486/opgroups.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/opgroups.c?re… ============================================================================== --- branches/ntvdm/lib/fast486/opgroups.c [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/opgroups.c [iso-8859-1] Mon Nov 11 01:02:48 2013 @@ -2004,9 +2004,6 @@ /* Return success */ return TRUE; - - return TRUE; } /* EOF */ -

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[aandrejevic] 60930: [FAST486] Implement SHLD and SHRD.
by aandrejevic＠svn.reactos.org 11 Nov '13

11 Nov '13

Author: aandrejevic Date: Mon Nov 11 00:57:59 2013 New Revision: 60930 URL: http://svn.reactos.org/svn/reactos?rev=60930&view=rev Log: [FAST486] Implement SHLD and SHRD. Modified: branches/ntvdm/lib/fast486/extraops.c branches/ntvdm/lib/fast486/extraops.h Modified: branches/ntvdm/lib/fast486/extraops.c URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/extraops.c?re… ============================================================================== --- branches/ntvdm/lib/fast486/extraops.c [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/extraops.c [iso-8859-1] Mon Nov 11 00:57:59 2013 @@ -201,16 +201,16 @@ Fast486ExtOpcodePopFs, NULL, // Invalid Fast486ExtOpcodeBitTest, - NULL, // TODO: OPCODE 0xA4 NOT IMPLEMENTED - NULL, // TODO: OPCODE 0xA5 NOT IMPLEMENTED + Fast486ExtOpcodeShld, + Fast486ExtOpcodeShld, NULL, // Invalid NULL, // Invalid Fast486ExtOpcodePushGs, Fast486ExtOpcodePopGs, NULL, // Invalid Fast486ExtOpcodeBts, - NULL, // TODO: OPCODE 0xAC NOT IMPLEMENTED - NULL, // TODO: OPCODE 0xAD NOT IMPLEMENTED + Fast486ExtOpcodeShrd, + Fast486ExtOpcodeShrd, NULL, // TODO: OPCODE 0xAE NOT IMPLEMENTED Fast486ExtOpcodeImul, Fast486ExtOpcodeCmpXchgByte, @@ -601,6 +601,98 @@ return TRUE; } +FAST486_OPCODE_HANDLER(Fast486ExtOpcodeShld) +{ + BOOLEAN OperandSize, AddressSize; + FAST486_MOD_REG_RM ModRegRm; + UCHAR Count; + + OperandSize = AddressSize = State->SegmentRegs[FAST486_REG_CS].Size; + TOGGLE_OPSIZE(OperandSize); + TOGGLE_ADSIZE(AddressSize); + + /* Make sure this is the right instruction */ + ASSERT((Opcode & 0xFE) == 0xA4); + + /* Get the operands */ + if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm)) + { + /* Exception occurred */ + return FALSE; + } + + if (Opcode == 0xA4) + { + /* Fetch the count */ + if (!Fast486FetchByte(State, &Count)) + { + /* Exception occurred */ + return FALSE; + } + } + else + { + /* The count is in CL */ + Count = State->GeneralRegs[FAST486_REG_ECX].LowByte; + } + + /* Normalize the count */ + if (OperandSize) Count &= 0x1F; + else Count &= 0x0F; + + /* Do nothing if the count is zero */ + if (Count == 0) return TRUE; + + if (OperandSize) + { + ULONG Source, Destination, Result; + + if (!Fast486ReadModrmDwordOperands(State, &ModRegRm, &Source, &Destination)) + { + /* Exception occurred */ + return FALSE; + } + + /* Calculate the result */ + Result = (Destination << Count) | (Source >> (32 - Count)); + + /* Update flags */ + State->Flags.Cf = (Destination >> (32 - Count)) & 1; + if (Count == 1) State->Flags.Of = (Result & SIGN_FLAG_LONG) + != (Destination & SIGN_FLAG_LONG); + State->Flags.Zf = (Result == 0); + State->Flags.Sf = ((Result & SIGN_FLAG_LONG) != 0); + State->Flags.Pf = Fast486CalculateParity(Result); + + /* Write back the result */ + return Fast486WriteModrmDwordOperands(State, &ModRegRm, FALSE, Result); + } + else + { + USHORT Source, Destination, Result; + + if (!Fast486ReadModrmWordOperands(State, &ModRegRm, &Source, &Destination)) + { + /* Exception occurred */ + return FALSE; + } + + /* Calculate the result */ + Result = (Destination << Count) | (Source >> (16 - Count)); + + /* Update flags */ + State->Flags.Cf = (Destination >> (16 - Count)) & 1; + if (Count == 1) State->Flags.Of = (Result & SIGN_FLAG_WORD) + != (Destination & SIGN_FLAG_WORD); + State->Flags.Zf = (Result == 0); + State->Flags.Sf = ((Result & SIGN_FLAG_WORD) != 0); + State->Flags.Pf = Fast486CalculateParity(Result); + + /* Write back the result */ + return Fast486WriteModrmWordOperands(State, &ModRegRm, FALSE, Result); + } +} + FAST486_OPCODE_HANDLER(Fast486ExtOpcodePushGs) { /* Call the internal API */ @@ -710,6 +802,98 @@ /* Return success */ return TRUE; +} + +FAST486_OPCODE_HANDLER(Fast486ExtOpcodeShrd) +{ + BOOLEAN OperandSize, AddressSize; + FAST486_MOD_REG_RM ModRegRm; + UCHAR Count; + + OperandSize = AddressSize = State->SegmentRegs[FAST486_REG_CS].Size; + TOGGLE_OPSIZE(OperandSize); + TOGGLE_ADSIZE(AddressSize); + + /* Make sure this is the right instruction */ + ASSERT((Opcode & 0xFE) == 0xAC); + + /* Get the operands */ + if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm)) + { + /* Exception occurred */ + return FALSE; + } + + if (Opcode == 0xAC) + { + /* Fetch the count */ + if (!Fast486FetchByte(State, &Count)) + { + /* Exception occurred */ + return FALSE; + } + } + else + { + /* The count is in CL */ + Count = State->GeneralRegs[FAST486_REG_ECX].LowByte; + } + + /* Normalize the count */ + if (OperandSize) Count &= 0x1F; + else Count &= 0x0F; + + /* Do nothing if the count is zero */ + if (Count == 0) return TRUE; + + if (OperandSize) + { + ULONG Source, Destination, Result; + + if (!Fast486ReadModrmDwordOperands(State, &ModRegRm, &Source, &Destination)) + { + /* Exception occurred */ + return FALSE; + } + + /* Calculate the result */ + Result = (Destination >> Count) | (Source << (32 - Count)); + + /* Update flags */ + State->Flags.Cf = (Destination >> (Count - 1)) & 1; + if (Count == 1) State->Flags.Of = (Result & SIGN_FLAG_LONG) + != (Destination & SIGN_FLAG_LONG); + State->Flags.Zf = (Result == 0); + State->Flags.Sf = ((Result & SIGN_FLAG_LONG) != 0); + State->Flags.Pf = Fast486CalculateParity(Result); + + /* Write back the result */ + return Fast486WriteModrmDwordOperands(State, &ModRegRm, FALSE, Result); + } + else + { + USHORT Source, Destination, Result; + + if (!Fast486ReadModrmWordOperands(State, &ModRegRm, &Source, &Destination)) + { + /* Exception occurred */ + return FALSE; + } + + /* Calculate the result */ + Result = (Destination >> Count) | (Source << (16 - Count)); + + /* Update flags */ + State->Flags.Cf = (Result >> (Count - 1)) & 1; + if (Count == 1) State->Flags.Of = (Result & SIGN_FLAG_WORD) + != (Destination & SIGN_FLAG_WORD); + State->Flags.Zf = (Result == 0); + State->Flags.Sf = ((Result & SIGN_FLAG_WORD) != 0); + State->Flags.Pf = Fast486CalculateParity(Result); + + /* Write back the result */ + return Fast486WriteModrmWordOperands(State, &ModRegRm, FALSE, Result); + } } FAST486_OPCODE_HANDLER(Fast486ExtOpcodeImul) Modified: branches/ntvdm/lib/fast486/extraops.h URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/fast486/extraops.h?re… ============================================================================== --- branches/ntvdm/lib/fast486/extraops.h [iso-8859-1] (original) +++ branches/ntvdm/lib/fast486/extraops.h [iso-8859-1] Mon Nov 11 00:57:59 2013 @@ -34,9 +34,11 @@ FAST486_OPCODE_HANDLER(Fast486ExtOpcodePushFs); FAST486_OPCODE_HANDLER(Fast486ExtOpcodePopFs); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBitTest); +FAST486_OPCODE_HANDLER(Fast486ExtOpcodeShld); FAST486_OPCODE_HANDLER(Fast486ExtOpcodePushGs); FAST486_OPCODE_HANDLER(Fast486ExtOpcodePopGs); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBts); +FAST486_OPCODE_HANDLER(Fast486ExtOpcodeShrd); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeImul); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeCmpXchgByte); FAST486_OPCODE_HANDLER(Fast486ExtOpcodeCmpXchg);

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