[tkreuzer] 45047: [HAL] - Move x86 emulator definitions into their own header - Fix handling of the real mode IDT in x86BiosCall - Implement HalpBiosDisplayReset - Fix a copy paste error
11 Jan
2010
11 Jan
'10
7:29 p.m.
Author: tkreuzer
Date: Mon Jan 11 20:29:16 2010
New Revision: 45047
URL: http://svn.reactos.org/svn/reactos?rev=45047&view=rev
Log:
[HAL]
- Move x86 emulator definitions into their own header
- Fix handling of the real mode IDT in x86BiosCall
- Implement HalpBiosDisplayReset
- Fix a copy paste error
Added:
branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86emu.h (with props)
Modified:
branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86bios.c
Modified: branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86bios.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/hal/h…
==============================================================================
--- branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86bios.c [iso-8859-1]
(original)
+++ branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86bios.c [iso-8859-1] Mon
Jan 11 20:29:16 2010
@@ -12,6 +12,8 @@
//#define NDEBUG
#include <debug.h>
+#include "x86emu.h"
+
/* This page serves as fallback for pages used by Mm */
#define DEFAULT_PAGE 0x21
@@ -20,6 +22,24 @@
BOOLEAN x86BiosIsInitialized;
LONG x86BiosBufferIsAllocated = 0;
PUCHAR x86BiosMemoryMapping;
+
+
+VOID
+NTAPI
+DbgDumpPage(PUCHAR MemBuffer, USHORT Segment)
+{
+ ULONG x, y, Offset;
+
+ for (y = 0; y < 0x100; y++)
+ {
+ for (x = 0; x < 0x10; x++)
+ {
+ Offset = Segment * 16 + y * 16 + x;
+ DbgPrint("%02x ", MemBuffer[Offset]);
+ }
+ DbgPrint("\n");
+ }
+}
VOID
NTAPI
@@ -62,7 +82,7 @@
{
/* Check if the memory type is firmware */
if (Descriptor->MemoryType != LoaderFirmwarePermanent &&
- Descriptor->MemoryType != LoaderFirmwarePermanent)
+ Descriptor->MemoryType != LoaderSpecialMemory)
{
/* It's something else, so don't use it! */
Last = min(Descriptor->BasePage + Descriptor->PageCount, 0x100);
@@ -82,13 +102,16 @@
ASSERT(x86BiosMemoryMapping);
DPRINT1("memory: %p, %p\n", *(PVOID*)x86BiosMemoryMapping,
*(PVOID*)(x86BiosMemoryMapping + 8));
+ //DbgDumpPage(x86BiosMemoryMapping, 0xc351);
x86BiosIsInitialized = TRUE;
-}
-
-NTSTATUS
-NTAPI
-x86BiosAllocateBuffer (
+
+ HalpBiosDisplayReset();
+}
+
+NTSTATUS
+NTAPI
+x86BiosAllocateBuffer(
ULONG *Size,
USHORT *Segment,
USHORT *Offset)
@@ -117,7 +140,7 @@
NTSTATUS
NTAPI
-x86BiosFreeBuffer (
+x86BiosFreeBuffer(
USHORT Segment,
USHORT Offset)
{
@@ -141,7 +164,7 @@
NTSTATUS
NTAPI
-x86BiosReadMemory (
+x86BiosReadMemory(
USHORT Segment,
USHORT Offset,
PVOID Buffer,
@@ -168,7 +191,7 @@
NTSTATUS
NTAPI
-x86BiosWriteMemory (
+x86BiosWriteMemory(
USHORT Segment,
USHORT Offset,
PVOID Buffer,
@@ -193,97 +216,18 @@
return STATUS_SUCCESS;
}
-typedef struct
-{
- union
- {
- ULONG Eax;
- USHORT Ax;
- struct
- {
- UCHAR Al;
- UCHAR Ah;
- };
- };
- union
- {
- ULONG Ecx;
- USHORT Cx;
- struct
- {
- UCHAR Cl;
- UCHAR Ch;
- };
- };
- union
- {
- ULONG Edx;
- USHORT Dx;
- struct
- {
- UCHAR Dl;
- UCHAR Dh;
- };
- };
- union
- {
- ULONG Ebx;
- USHORT Bx;
- struct
- {
- UCHAR Bl;
- UCHAR Bh;
- };
- };
- ULONG Ebp;
- ULONG Esi;
- ULONG Edi;
- USHORT SegDs;
- USHORT SegEs;
-
- /* Extended */
- union
- {
- ULONG Eip;
- USHORT Ip;
- };
-
- union
- {
- ULONG Esp;
- USHORT Sp;
- };
-
-} X86_REGISTERS, *PX86_REGISTERS;
-
-enum
-{
- X86_VMFLAGS_RETURN_ON_IRET = 1,
-};
-
-typedef struct
-{
- union
- {
- X86_BIOS_REGISTERS BiosRegisters;
- X86_REGISTERS Registers;
- };
-
- struct
- {
- ULONG ReturnOnIret:1;
- } Flags;
-
- PVOID MemBuffer;
-} X86_VM_STATE, *PX86_VM_STATE;
-
BOOLEAN
NTAPI
-x86BiosCall (
+x86BiosCall(
ULONG InterruptNumber,
X86_BIOS_REGISTERS *Registers)
{
X86_VM_STATE VmState;
+ struct
+ {
+ USHORT Ip;
+ USHORT SegCs;
+ } *InterrupTable;
/* Zero the VmState */
RtlZeroMemory(&VmState, sizeof(VmState));
@@ -294,9 +238,18 @@
/* Set the physical memory buffer */
VmState.MemBuffer = x86BiosMemoryMapping;
+ /* Set Eflags */
+ VmState.Registers.Eflags.Long = 0; // FIXME
+
+ /* Setup stack */
+ VmState.Registers.SegSs = 0; // FIXME
+ VmState.Registers.Sp = 0x2000 - 2; // FIXME
+
/* Initialize IP from the interrupt vector table */
- VmState.Registers.Ip = ((PUSHORT)x86BiosMemoryMapping)[InterruptNumber];
-
+ InterrupTable = (PVOID)x86BiosMemoryMapping;
+ VmState.Registers.SegCs = InterrupTable[InterruptNumber].SegCs;
+ VmState.Registers.Eip = InterrupTable[InterruptNumber].Ip;
+
/* Make the function return on IRET */
VmState.Flags.ReturnOnIret = 1;
@@ -313,7 +266,24 @@
NTAPI
HalpBiosDisplayReset(VOID)
{
- UNIMPLEMENTED;
+ X86_BIOS_REGISTERS Registers;
+ ULONG OldEflags;
+
+ /* Save flags and disable interrupts */
+ OldEflags = __readeflags();
+ _disable();
+
+ /* Set AH = 0 (Set video mode), AL = 0x12 (640x480x16 vga) */
+ Registers.Eax = 0x12;
+
+ /* Call INT 0x10 */
+ x86BiosCall(0x10, &Registers);
+
+ // FIXME: check result
+
+ /* Restore previous flags */
+ __writeeflags(OldEflags);
+
return TRUE;
}
Added: branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86emu.h
URL:
http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/hal/h…
==============================================================================
--- branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86emu.h (added)
+++ branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86emu.h [iso-8859-1] Mon
Jan 11 20:29:16 2010
@@ -1,0 +1,221 @@
+
+typedef union
+{
+ USHORT Short;
+ ULONG Long;
+ struct
+ {
+ ULONG Cf:1;
+ ULONG Pf:1;
+ ULONG Af:1;
+ ULONG Zf:1;
+ ULONG Sf:1;
+ ULONG Tf:1;
+ ULONG If:1;
+ ULONG Df:1;
+ ULONG Of:1;
+ ULONG Iopl:3;
+ ULONG Nt:1;
+ ULONG Rf:1;
+ ULONG Vm:1;
+ ULONG Ac:1;
+ ULONG Vif:1;
+ ULONG Vip:1;
+ ULONG Id:1;
+ };
+} EFLAGS;
+
+typedef union
+{
+ ULONG Dword;
+ USHORT Word;
+ UCHAR Byte;
+ struct
+ {
+ UCHAR Low;
+ UCHAR High;
+ };
+} REGU;
+
+typedef union
+{
+ struct
+ {
+ UCHAR mod:2;
+ UCHAR reg:3;
+ UCHAR rm:3;
+ };
+ UCHAR Byte;
+} MODRM;
+
+typedef struct
+{
+ union
+ {
+ ULONG Eax;
+ USHORT Ax;
+ struct
+ {
+ UCHAR Al;
+ UCHAR Ah;
+ };
+ };
+ union
+ {
+ ULONG Ecx;
+ USHORT Cx;
+ struct
+ {
+ UCHAR Cl;
+ UCHAR Ch;
+ };
+ };
+ union
+ {
+ ULONG Edx;
+ USHORT Dx;
+ struct
+ {
+ UCHAR Dl;
+ UCHAR Dh;
+ };
+ };
+ union
+ {
+ ULONG Ebx;
+ USHORT Bx;
+ struct
+ {
+ UCHAR Bl;
+ UCHAR Bh;
+ };
+ };
+ union
+ {
+ ULONG Ebp;
+ USHORT Bp;
+ };
+ union
+ {
+ ULONG Esi;
+ USHORT Si;
+ };
+ union
+ {
+ ULONG Edi;
+ USHORT Di;
+ };
+ union
+ {
+ struct
+ {
+ ULONG ReservedDsMBZ:4;
+ ULONG SegDs:16;
+ };
+ ULONG ShiftedDs;
+ };
+ union
+ {
+ struct
+ {
+ ULONG ReservedEsMBZ:4;
+ ULONG SegEs:16;
+ };
+ ULONG ShiftedEs;
+ };
+
+ /* Extended */
+ union
+ {
+ struct
+ {
+ ULONG ReservedCsMBZ:4;
+ ULONG SegCs:16;
+ };
+ ULONG ShiftedCs;
+ };
+ union
+ {
+ struct
+ {
+ ULONG ReservedSsMBZ:4;
+ ULONG SegSs:16;
+ };
+ ULONG ShiftedSs;
+ };
+
+ union
+ {
+ struct
+ {
+ ULONG ReservedMsMBZ:4;
+ ULONG SegMs:16;
+ };
+ ULONG ShiftedMs;
+ };
+
+ union
+ {
+ ULONG Eip;
+ USHORT Ip;
+ };
+
+ union
+ {
+ ULONG Esp;
+ USHORT Sp;
+ };
+
+ EFLAGS Eflags;
+
+} X86_REGISTERS, *PX86_REGISTERS;
+
+enum
+{
+ X86_VMFLAGS_RETURN_ON_IRET = 1,
+};
+
+typedef struct
+{
+ union
+ {
+ X86_BIOS_REGISTERS BiosRegisters;
+ X86_REGISTERS Registers;
+ REGU IndexedRegisters[8];
+ };
+
+ struct
+ {
+ ULONG ReturnOnIret:1;
+ } Flags;
+
+ PVOID MemBuffer;
+
+#if 1
+ PCHAR Mnemonic;
+ PCHAR DstReg;
+ PCHAR SrcReg;
+ ULONG SrcEncodung;
+ ULONG DstEncoding;
+ ULONG Length;
+#endif
+} X86_VM_STATE, *PX86_VM_STATE;
+
+enum
+{
+ PREFIX_SIZE_OVERRIDE = 0x010001,
+ PREFIX_ADDRESS_OVERRIDE = 0x020002,
+ PREFIX_SEGMENT_CS = 0x040004,
+ PREFIX_SEGMENT_DS = 0x040008,
+ PREFIX_SEGMENT_ES = 0x040010,
+ PREFIX_SEGMNET_FS = 0x040020,
+ PREFIX_SEGMENT_GS = 0x040040,
+ PREFIX_SEGMENT_SS = 0x040080,
+ PREFIX_LOCK = 0x080100,
+ PREFIX_REP = 0x100200,
+} PREFIX_STATE;
+
+
+VOID
+NTAPI
+x86Emulator(PX86_VM_STATE VmState);
Propchange: branches/ros-amd64-bringup/reactos/hal/halx86/generic/amd64/x86emu.h
------------------------------------------------------------------------------
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