[sir_richard] 45272: [HAL]: Rewrite all V8086-related code in C instead of ASM. Delete v86.s. Makes uses of new macros and developments in NTOS, but should now only end up getting called at shutdown and for bugchecks.
Author: sir_richard Date: Tue Jan 26 20:41:31 2010 New Revision: 45272
URL: http://svn.reactos.org/svn/reactos?rev=45272&view=rev Log: [HAL]: Rewrite all V8086-related code in C instead of ASM. Delete v86.s. Makes uses of new macros and developments in NTOS, but should now only end up getting called at shutdown and for bugchecks.
Removed: trunk/reactos/hal/halx86/generic/v86.s Modified: trunk/reactos/hal/halx86/generic/bios.c trunk/reactos/hal/halx86/hal_generic.rbuild trunk/reactos/hal/halx86/include/halp.h
Modified: trunk/reactos/hal/halx86/generic/bios.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/bios.c?r... ============================================================================== --- trunk/reactos/hal/halx86/generic/bios.c [iso-8859-1] (original) +++ trunk/reactos/hal/halx86/generic/bios.c [iso-8859-1] Tue Jan 26 20:41:31 2010 @@ -40,6 +40,270 @@ PUSHORT HalpSavedIoMap; USHORT HalpSavedIoMapData[32][2]; ULONG HalpSavedIoMapEntries; + +/* Where the protected mode stack is */ +ULONG_PTR HalpSavedEsp; + +/* Where the real mode code ends */ +extern PVOID HalpRealModeEnd; + +/* REAL MODE CODE AND STACK START HERE ****************************************/ + +VOID +DECLSPEC_NORETURN +HalpRealModeStart(VOID) +{ + /* Do the video BIOS interrupt */ + HalpCallBiosInterrupt(VIDEO_SERVICES, (SET_VIDEO_MODE << 8) | (GRAPHICS_MODE_12)); + + /* Issue the BOP */ + KiIssueBop(); + + /* We want the stack to be inside this function so we can map real mode */ + HalpRealModeStack(sizeof(ULONG), PAGE_SIZE / 2); + UNREACHABLE; +} + +/* REAL MODE CODE AND STACK END HERE ******************************************/ + +/* V86 OPCODE HANDLERS ********************************************************/ + +BOOLEAN +FASTCALL +HalpOpcodeInvalid(IN PHAL_BIOS_FRAME BiosFrame) +{ + /* Print error message */ + DPRINT1("HAL: An invalid V86 opcode was encountered at address %x:%x\n", + BiosFrame->SegCs, BiosFrame->Eip); + + /* Break */ + DbgBreakPoint(); + return FALSE; +} + +BOOLEAN +FASTCALL +HalpPushInt(IN PHAL_BIOS_FRAME BiosFrame, + IN ULONG Interrupt) +{ + PUSHORT Stack; + ULONG Eip; + + /* Calculate stack address (SP) */ + Stack = (PUSHORT)(BiosFrame->SsBase + (BiosFrame->Esp & 0xFFFF)); + + /* Push EFlags */ + Stack--; + *Stack = BiosFrame->EFlags & 0xFFFF; + + /* Push CS */ + Stack--; + *Stack = BiosFrame->SegCs & 0xFFFF; + + /* Push IP */ + Stack--; + *Stack = BiosFrame->Eip & 0xFFFF; + + /* Compute new CS:IP from the IVT address for this interrupt entry */ + Eip = *(PULONG)(Interrupt * 4); + BiosFrame->Eip = Eip & 0xFFFF; + BiosFrame->SegCs = Eip >> 16; + + /* Update stack address */ + BiosFrame->Esp = (ULONG_PTR)Stack & 0xFFFF; + + /* Update CS to linear */ + BiosFrame->CsBase = BiosFrame->SegCs << 4; + BiosFrame->CsLimit = 0xFFFF; + BiosFrame->CsFlags = 0; + + /* We're done */ + return TRUE; +} + +BOOLEAN +FASTCALL +HalpOpcodeINTnn(IN PHAL_BIOS_FRAME BiosFrame) +{ + UCHAR Interrupt; + PKTRAP_FRAME TrapFrame; + + /* Convert SS to linear */ + BiosFrame->SsBase = BiosFrame->SegSs << 4; + BiosFrame->SsLimit = 0xFFFF; + BiosFrame->SsFlags = 0; + + /* Increase EIP and validate */ + BiosFrame->Eip++; + if (BiosFrame->Eip > BiosFrame->CsLimit) return FALSE; + + /* Read interrupt number */ + Interrupt = *(PUCHAR)(BiosFrame->CsBase + BiosFrame->Eip); + + /* Increase EIP and push the interrupt */ + BiosFrame->Eip++; + if (HalpPushInt(BiosFrame, Interrupt)) + { + /* Update the trap frame */ + TrapFrame = BiosFrame->TrapFrame; + TrapFrame->HardwareSegSs = BiosFrame->SegSs; + TrapFrame->HardwareEsp = BiosFrame->Esp; + TrapFrame->SegCs = BiosFrame->SegCs; + TrapFrame->EFlags = BiosFrame->EFlags; + + /* Success */ + return TRUE; + } + + /* Failure */ + return FALSE; +} + +BOOLEAN +FASTCALL +HalpDispatchV86Opcode(IN PKTRAP_FRAME TrapFrame) +{ + UCHAR Instruction; + HAL_BIOS_FRAME BiosFrame; + + /* Fill out the BIOS frame */ + BiosFrame.TrapFrame = TrapFrame; + BiosFrame.SegSs = TrapFrame->HardwareSegSs; + BiosFrame.Esp = TrapFrame->HardwareEsp; + BiosFrame.EFlags = TrapFrame->EFlags; + BiosFrame.SegCs = TrapFrame->SegCs; + BiosFrame.Eip = TrapFrame->Eip; + BiosFrame.Prefix = 0; + + /* Convert CS to linear */ + BiosFrame.CsBase = BiosFrame.SegCs << 4; + BiosFrame.CsLimit = 0xFFFF; + BiosFrame.CsFlags = 0; + + /* Validate IP */ + if (BiosFrame.Eip > BiosFrame.CsLimit) return FALSE; + + /* Read IP */ + Instruction = *(PUCHAR)(BiosFrame.CsBase + BiosFrame.Eip); + if (Instruction != 0xCD) + { + /* We only support INT */ + HalpOpcodeInvalid(&BiosFrame); + return FALSE; + } + + /* Handle the interrupt */ + if (HalpOpcodeINTnn(&BiosFrame)) + { + /* Update EIP */ + TrapFrame->Eip = BiosFrame.Eip; + + /* We're done */ + return TRUE; + } + + /* Failure */ + return FALSE; +} + +/* V86 TRAP HANDLERS **********************************************************/ + +VOID +FASTCALL +DECLSPEC_NORETURN +HalpTrap0DHandler(IN PKTRAP_FRAME TrapFrame) +{ + /* Enter the trap */ + KiEnterTrap(TrapFrame); + + /* Check if this is a V86 trap */ + if (TrapFrame->EFlags & EFLAGS_V86_MASK) + { + /* Dispatch the opcode and exit the trap */ + HalpDispatchV86Opcode(TrapFrame); + KiEoiHelper(TrapFrame); + } + + /* Strange, it isn't! This can happen during NMI */ + DPRINT1("HAL: Trap0D while not in V86 mode\n"); + while (TRUE); +} + +KiTrap(HalpTrap0D, 0); + +VOID +DECLSPEC_NORETURN +HalpTrap06(VOID) +{ + PKTRAP_FRAME TrapFrame; + + /* Restore ES/DS to known good values first */ + Ke386SetEs(KGDT_R3_DATA | RPL_MASK); + Ke386SetDs(KGDT_R3_DATA | RPL_MASK); + + /* Read trap frame address */ + TrapFrame = (PKTRAP_FRAME)HalpSavedEsp; + + /* Restore segments from the trap frame */ + Ke386SetGs(TrapFrame->SegGs); + Ke386SetFs(TrapFrame->SegFs); + Ke386SetEs(TrapFrame->SegEs); + Ke386SetDs(TrapFrame->SegDs); + + /* Restore EFlags */ + __writeeflags(TrapFrame->EFlags); + + /* Exit the V86 mode trap frame */ + KiCallReturn(TrapFrame); +} + +/* V8086 ENTER ****************************************************************/ + +VOID +FASTCALL +DECLSPEC_NORETURN +HalpBiosCallHandler(IN PKTRAP_FRAME TrapFrame) +{ + /* Must be volatile so it doesn't get optimized away! */ + volatile KTRAP_FRAME V86TrapFrame; + ULONG_PTR StackOffset, CodeOffset; + + /* Fill out the quick-n-dirty trap frame */ + TrapFrame->EFlags = __readeflags(); + TrapFrame->SegGs = Ke386GetGs(); + TrapFrame->SegFs = Ke386GetFs(); + TrapFrame->SegEs = Ke386GetEs(); + TrapFrame->SegDs = Ke386GetDs(); + + /* Our stack (the frame) */ + HalpSavedEsp = (ULONG_PTR)TrapFrame; + + /* Kill alignment faults */ + __writecr0(__readcr0() & ~CR0_AM); + + /* Set new stack address */ + KeGetPcr()->TSS->Esp0 = HalpSavedEsp - sizeof(FX_SAVE_AREA); + + /* Compute segmented IP and SP offsets */ + StackOffset = (ULONG_PTR)&HalpRealModeEnd - 4 - (ULONG_PTR)HalpRealModeStart; + CodeOffset = (ULONG_PTR)HalpRealModeStart & 0xFFF; + + /* Now build the V86 trap frame */ + V86TrapFrame.V86Es = 0; + V86TrapFrame.V86Ds = 0; + V86TrapFrame.V86Gs = 0; + V86TrapFrame.V86Fs = 0; + V86TrapFrame.HardwareSegSs = 0x2000; + V86TrapFrame.HardwareEsp = StackOffset + CodeOffset; + V86TrapFrame.EFlags = __readeflags() | EFLAGS_V86_MASK | EFLAGS_IOPL; + V86TrapFrame.SegCs = 0x2000; + V86TrapFrame.Eip = CodeOffset; + + /* Exit to V86 mode */ + KiDirectTrapReturn((PKTRAP_FRAME)&V86TrapFrame); +} + +KiTrampoline(HalpBiosCall, KI_PUSH_FAKE_ERROR_CODE | KI_NONVOLATILES_ONLY);
/* FUNCTIONS ******************************************************************/
Removed: trunk/reactos/hal/halx86/generic/v86.s URL: http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/v86.s?re... ============================================================================== --- trunk/reactos/hal/halx86/generic/v86.s [iso-8859-1] (original) +++ trunk/reactos/hal/halx86/generic/v86.s (removed) @@ -1,435 +1,0 @@ -/* - * FILE: hal/halx86/generic/bios.S - * COPYRIGHT: See COPYING in the top level directory - * PURPOSE: V8086 Real-Mode BIOS Thunking - * PROGRAMMER: Alex Ionescu (alex@relsoft.net) - */ - -/* INCLUDES ******************************************************************/ - -#include <asm.h> -#include <internal/i386/asmmacro.S> -.intel_syntax noprefix - -// -// HAL BIOS Frame -// -#define HALP_BIOS_FRAME_SS 0x00 -#define HALP_BIOS_FRAME_ESP 0x04 -#define HALP_BIOS_FRAME_EFLAGS 0x08 -#define HALP_BIOS_FRAME_CS 0x0C -#define HALP_BIOS_FRAME_EIP 0x10 -#define HALP_BIOS_FRAME_TRAP_FRAME 0x14 -#define HALP_BIOS_FRAME_CS_LIMIT 0x18 -#define HALP_BIOS_FRAME_CS_BASE 0x1C -#define HALP_BIOS_FRAME_CS_FLAGS 0x20 -#define HALP_BIOS_FRAME_SS_LIMIT 0x24 -#define HALP_BIOS_FRAME_SS_BASE 0x28 -#define HALP_BIOS_FRAME_SS_FLAGS 0x2C -#define HALP_BIOS_FRAME_PREFIX 0x30 -#define HALP_BIOS_FRAME_LENGTH 0x34 - -/* GLOBALS *******************************************************************/ - -_HalpSavedEsp: - .long 0 - -_InvalidMsg: - .asciz "HAL: An invalid V86 opcode was encountered at address %x:%x\n" - -_InvalidGpfMsg: - .asciz "HAL: Trap0D while not in V86 mode\n" - -_UnhandledMsg: - .asciz "\n\x7\x7!!! Unhandled or Unexpected Code at line: %lx [%s]!!!\n" - -/* FUNCTIONS *****************************************************************/ - -.globl _HalpBiosCall@0 -.func HalpBiosCall@0 -_HalpBiosCall@0: - - /* Set up stack pointer */ - push ebp - mov ebp, esp - - /* Build a trap frame */ - pushfd - push edi - push esi - push ebx - push ds - push es - push fs - push gs - push offset _HalpRealModeEnd - - /* Save the stack */ - mov _HalpSavedEsp, esp - - /* Turn off alignment faults */ - mov eax, cr0 - and eax, ~CR0_AM - mov cr0, eax - - /* Setup a new stack */ - mov esi, fs:KPCR_TSS - mov eax, esp - sub eax, NPX_FRAME_LENGTH - mov [esi+KTSS_ESP0], eax - - /* Save V86 registers */ - push 0 - push 0 - push 0 - push 0 - push 0x2000 - - /* Get linear delta between stack and code */ - mov eax, offset _HalpRealModeEnd-4 - sub eax, offset _HalpRealModeStart - - /* Get offset of code */ - mov edx, offset _HalpRealModeStart - and edx, 0xFFF - - /* Add offset to linear address and save the new V86 SP */ - add eax, edx - push eax - - /* Start building interrupt frame. Setup V86 EFLAGS and IOPL 3 */ - pushfd - or dword ptr [esp], EFLAGS_V86_MASK - or dword ptr [esp], 0x3000 - - /* Push the CS and IP */ - push 0x2000 - push edx - - /* Do the interrupt return (jump to V86 mode) */ - iretd - -.globl _HalpRealModeStart -_HalpRealModeStart: - - /* Set mode 13 */ - mov ax, 0x12 - .byte 0 - .byte 0 - - /* Do the interrupt */ - int 0x10 - - /* BOP to exit V86 mode */ - .byte 0xC4 - .byte 0xC4 - - /* The stack lives here */ -.align 4 - .space 2048 -.globl _HalpRealModeEnd -_HalpRealModeEnd: - - /* We're back, clean up the trap frame */ - pop gs - pop fs - pop es - pop ds - pop ebx - pop esi - pop edi - popfd - - /* Return to caller */ - pop ebp - ret 0 -.endfunc - -.globl _HalpOpcodeInvalid@0 -.func HalpOpcodeInvalid@0 -_HalpOpcodeInvalid@0: - - /* This should never happen -- is the IOPM damaged? */ - push [esi+HALP_BIOS_FRAME_EIP] - push [esi+HALP_BIOS_FRAME_CS] - push offset _InvalidMsg - call _DbgPrint - add esp, 12 - - /* Break */ - int 3 - - /* Nothing to return */ - xor eax, eax - ret 0 -.endfunc - -.globl _HalpPushInt@0 -.func HalpPushInt@0 -_HalpPushInt@0: - - /* Save EBX */ - push ebx - - /* Get SS offset and base */ - mov edx, [esi+HALP_BIOS_FRAME_ESP] - mov ebx, [esi+HALP_BIOS_FRAME_SS_BASE] - - /* Convert to 16-bits */ - and edx, 0xFFFF - sub dx, 2 - - /* Get EFLAGS and write them into the linear address of SP */ - mov ax, word ptr [esi+HALP_BIOS_FRAME_EFLAGS] - mov [ebx+edx], ax - sub dx, 2 - - /* Get CS segment and write it into SP */ - mov ax, word ptr [esi+HALP_BIOS_FRAME_CS] - mov [ebx+edx], ax - sub dx, 2 - - /* Get IP and write it into SP */ - mov ax, word ptr [esi+HALP_BIOS_FRAME_EIP] - mov [ebx+edx], ax - - /* Get new IP value (the interrupt ID is in ECX, so this is in the IVT) */ - mov eax, [ecx*4] - push eax - - /* Now save the new IP */ - movzx eax, ax - mov [esi+HALP_BIOS_FRAME_EIP], eax - - /* Save the new CS of this IP */ - pop eax - shr eax, 16 - mov [esi+HALP_BIOS_FRAME_CS], eax - - /* Update the stack pointer after our manual interrupt frame construction */ - mov word ptr [esi+HALP_BIOS_FRAME_ESP], dx - - /* Get CS and convert it to linear format */ - mov eax, [esi+HALP_BIOS_FRAME_CS] - shl eax, 4 - mov [esi+HALP_BIOS_FRAME_CS_BASE], eax - mov dword ptr [esi+HALP_BIOS_FRAME_CS_LIMIT], 0xFFFF - mov dword ptr [esi+HALP_BIOS_FRAME_CS_FLAGS], 0 - - /* Return success and restore EBX */ - mov eax, 1 - pop ebx - ret 0 -.endfunc - -.globl _HalpOpcodeINTnn@0 -.func HalpOpcodeINTnn@0 -_HalpOpcodeINTnn@0: - - /* Save non-volatiles and stack */ - push ebp - push esi - push ebx - - /* Get SS and convert it to linear format */ - mov eax, [esi+HALP_BIOS_FRAME_SS] - shl eax, 4 - mov [esi+HALP_BIOS_FRAME_SS_BASE], eax - mov dword ptr [esi+HALP_BIOS_FRAME_SS_LIMIT], 0xFFFF - mov dword ptr [esi+HALP_BIOS_FRAME_SS_FLAGS], 0 - - /* Increase IP and check if we're past the CS limit */ - inc dword ptr [esi+HALP_BIOS_FRAME_EIP] - mov edi, [esi+HALP_BIOS_FRAME_EIP] - cmp edi, [esi+HALP_BIOS_FRAME_CS_LIMIT] - ja EipLimitReached - - /* Convert IP to linear address and read the interrupt number */ - add edi, [esi+HALP_BIOS_FRAME_CS_BASE] - movzx ecx, byte ptr [edi] - - /* Increase EIP and do the interrupt, check for status */ - inc dword ptr [esi+HALP_BIOS_FRAME_EIP] - call _HalpPushInt@0 - test eax, 0xFFFF - jz Done - - /* Update the trap frame */ - mov ebp, [esi+HALP_BIOS_FRAME_TRAP_FRAME] - mov eax, [esi+HALP_BIOS_FRAME_SS] - mov [ebp+KTRAP_FRAME_SS], eax - mov eax, [esi+HALP_BIOS_FRAME_ESP] - mov [ebp+KTRAP_FRAME_ESP], eax - mov eax, [esi+HALP_BIOS_FRAME_CS] - mov [ebp+KTRAP_FRAME_CS], eax - mov eax, [esi+HALP_BIOS_FRAME_EFLAGS] - mov [ebp+KTRAP_FRAME_EFLAGS], eax - - /* Set success code */ - mov eax, 1 - -Done: - /* Restore volatiles */ - pop ebx - pop edi - pop ebp - ret 0 - -EipLimitReached: - /* Set failure code */ - xor eax, eax - jmp Done -.endfunc - -.globl _HalpDispatchV86Opcode@0 -.func HalpDispatchV86Opcode@0 -_HalpDispatchV86Opcode@0: - - /* Make space for the HAL BIOS Frame on the stack */ - push ebp - mov ebp, esp - sub esp, HALP_BIOS_FRAME_LENGTH - - /* Save non-volatiles */ - push esi - push edi - - /* Save pointer to the trap frame */ - mov esi, [ebp] - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_TRAP_FRAME], esi - - /* Save SS */ - movzx eax, word ptr [esi+KTRAP_FRAME_SS] - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_SS], eax - - /* Save ESP */ - mov eax, [esi+KTRAP_FRAME_ESP] - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_ESP], eax - - /* Save EFLAGS */ - mov eax, [esi+KTRAP_FRAME_EFLAGS] - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_EFLAGS], eax - - /* Save CS */ - movzx eax, word ptr [esi+KTRAP_FRAME_CS] - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_CS], eax - - /* Save EIP */ - mov eax, [esi+KTRAP_FRAME_EIP] - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_EIP], eax - - /* No prefix */ - xor eax, eax - mov [ebp-HALP_BIOS_FRAME_LENGTH+HALP_BIOS_FRAME_PREFIX], eax - - /* Set pointer to HAL BIOS Frame */ - lea esi, [ebp-HALP_BIOS_FRAME_LENGTH] - - /* Convert CS to linear format */ - mov eax, [esi+HALP_BIOS_FRAME_CS] - shl eax, 4 - mov [esi+HALP_BIOS_FRAME_CS_BASE], eax - mov dword ptr [esi+HALP_BIOS_FRAME_CS_LIMIT], 0xFFFF - mov dword ptr [esi+HALP_BIOS_FRAME_CS_FLAGS], 0 - - /* Make sure IP is within the CS Limit */ - mov edi, [esi+HALP_BIOS_FRAME_EIP] - cmp edi, [esi+HALP_BIOS_FRAME_CS_LIMIT] - ja DispatchError - - /* Convert IP to linear address and read the opcode */ - add edi, [esi+HALP_BIOS_FRAME_CS_BASE] - mov dl, [edi] - - /* We only deal with interrupts */ - cmp dl, 0xCD - je DispatchInt - - /* Anything else is invalid */ - call _HalpOpcodeInvalid@0 - jmp DispatchError - -DispatchInt: - /* Handle dispatching the interrupt */ - call _HalpOpcodeINTnn@0 - test eax, 0xFFFF - jz DispatchReturn - - /* Update the trap frame EIP */ - mov edi, [ebp-0x20] - mov eax, [ebp-0x24] - mov [edi+KTRAP_FRAME_EIP], eax - - /* Set success code */ - mov eax, 1 - -DispatchReturn: - /* Restore registers and return */ - pop edi - pop esi - mov esp, ebp - pop ebp - ret 0 - -DispatchError: - /* Set failure code and return */ - xor eax, eax - jmp DispatchReturn -.endfunc - -.func Ki16BitStackException -_Ki16BitStackException: - - /* Save stack */ - push ss - push esp - - /* Go to kernel mode thread stack */ - mov eax, PCR[KPCR_CURRENT_THREAD] - add esp, [eax+KTHREAD_INITIAL_STACK] - - /* Switch to good stack segment */ - UNHANDLED_PATH "16-Bit Stack" -.endfunc - -.globl _HalpTrap0D@0 -.func HalpTrap0D@0 -TRAP_FIXUPS htd_a, htd_t, DoFixupV86, DoFixupAbios -_HalpTrap0D@0: - - /* Enter trap */ - TRAP_PROLOG htd_a, htd_t - - /* Check if this is a V86 trap */ - test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK - jnz DoDispatch - - /* This is weird -- but might happen during an NMI */ - push offset _InvalidGpfMsg - call _DbgPrint - add esp, 4 - - /* Loop forever */ - jmp $ - -DoDispatch: - /* Handle the opcode */ - call _HalpDispatchV86Opcode@0 - - /* Exit the interrupt */ - jmp _Kei386EoiHelper@0 -.endfunc - -.globl _HalpTrap06@0 -.func HalpTrap06@0 -_HalpTrap06@0: - - /* Restore DS/ES segments */ - mov eax, KGDT_R3_DATA | RPL_MASK - mov ds, ax - mov es, ax - - /* Restore ESP and return */ - mov esp, _HalpSavedEsp - ret 0 -.endfunc
Modified: trunk/reactos/hal/halx86/hal_generic.rbuild URL: http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/hal_generic.rbui... ============================================================================== --- trunk/reactos/hal/halx86/hal_generic.rbuild [iso-8859-1] (original) +++ trunk/reactos/hal/halx86/hal_generic.rbuild [iso-8859-1] Tue Jan 26 20:41:31 2010 @@ -29,7 +29,6 @@ <file>systimer.S</file> <file>timer.c</file> <file>usage.c</file> - <file>v86.s</file> </directory> <directory name="include"> <pch>hal.h</pch>
Modified: trunk/reactos/hal/halx86/include/halp.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/include/halp.h?r... ============================================================================== --- trunk/reactos/hal/halx86/include/halp.h [iso-8859-1] (original) +++ trunk/reactos/hal/halx86/include/halp.h [iso-8859-1] Tue Jan 26 20:41:31 2010 @@ -4,6 +4,23 @@
#ifndef __INTERNAL_HAL_HAL_H #define __INTERNAL_HAL_HAL_H + +typedef struct _HAL_BIOS_FRAME +{ + ULONG SegSs; + ULONG Esp; + ULONG EFlags; + ULONG SegCs; + ULONG Eip; + PKTRAP_FRAME TrapFrame; + ULONG CsLimit; + ULONG CsBase; + ULONG CsFlags; + ULONG SsLimit; + ULONG SsBase; + ULONG SsFlags; + ULONG Prefix; +} HAL_BIOS_FRAME, *PHAL_BIOS_FRAME;
#define HAL_APC_REQUEST 0 #define HAL_DPC_REQUEST 1 @@ -27,6 +44,59 @@ (((bcd & 0xF0) >> 4) * 10 + (bcd & 0x0F)) #define INT_BCD(int) \ (UCHAR)(((int / 10) << 4) + (int % 10)) + +// +// BIOS Interrupts +// +#define VIDEO_SERVICES 0x10 + +// +// Operations for INT 10h (in AH) +// +#define SET_VIDEO_MODE 0x00 + +// +// Video Modes for INT10h AH=00 (in AL) +// +#define GRAPHICS_MODE_12 0x12 /* 80x30 8x16 640x480 16/256K */ + +// +// Generates a 16-bit (real-mode or Virtual 8086) BIOS interrupt with a given AX */ +// +VOID +FORCEINLINE +HalpCallBiosInterrupt(IN ULONG Interrupt, + IN ULONG Ax) +{ + __asm__ __volatile__ + ( + ".byte 0x66\n" + "movl $%c[v], %%eax\n" + "int $%c[i]\n" + : + : [v] "i"(Ax), + [i] "i"(Interrupt) + ); +} + +// +// Constructs a stack of the given size and alignment in the real-mode .text region */ +// +VOID +FORCEINLINE +HalpRealModeStack(IN ULONG Alignment, + IN ULONG Size) +{ + __asm__ __volatile__ + ( + ".align %c[v]\n" + ".space %c[i]\n" + ".globl _HalpRealModeEnd\n_HalpRealModeEnd:\n" + : + : [v] "i"(Alignment), + [i] "i"(Size) + ); +}
// // Commonly stated as being 1.19318MHz @@ -557,24 +627,6 @@ VOID );
-VOID -NTAPI -HalpBiosCall( - VOID -); - -VOID -NTAPI -HalpTrap0D( - VOID -); - -VOID -NTAPI -HalpTrap06( - VOID -); - // // Processor Halt Routine // @@ -716,9 +768,6 @@
extern BOOLEAN HalpNMIInProgress;
-extern PVOID HalpRealModeStart; -extern PVOID HalpRealModeEnd; - extern ADDRESS_USAGE HalpDefaultIoSpace;
extern KSPIN_LOCK HalpSystemHardwareLock;
-
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