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[NTOS]: Put ASM macros back since the HAL also uses them.
svn path=/trunk/; revision=45041
This commit is contained in:
Sir Richard
parent
2efed8ef89
commit
9da88c7fda
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@ -113,6 +113,28 @@
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.asciz \Reason
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.endm
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//
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// @name UNHANDLED_V86_PATH
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//
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// This macro prints out that the current code path is for unhandled VDM support
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//
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// @param None
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//
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// @remark None.
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//
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.macro UNHANDLED_V86_PATH
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/* Get EIP */
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call $+5
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/* Print debug message */
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push offset _V86UnhandledMsg
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call _DbgPrint
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add esp, 8
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/* Loop indefinitely */
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jmp $
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.endm
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//
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// @name IDT
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//
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@ -254,6 +276,58 @@ _HalpHardwareInterrupt&Number:
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.endr
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.endm
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//
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// @name INVALID_V86_OPCODE
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//
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// This macro creates one or more entries for unhandled V86 Opcodes
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// in the V86 Opcode Table.
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//
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// @param count.
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// Number of entries to generate.
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//
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// @remark None.
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//
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.macro INVALID_V86_OPCODE count
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.rept \count
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.byte 0
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.endr
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.endm
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//
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// @name GENERATE_PREFIX_HANDLER
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//
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// This macro creates a prefix opcode handler.
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//
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// @param None.
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//
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// @remark None.
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//
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.macro GENERATE_PREFIX_HANDLER Name
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.func Opcode&Name&PrefixV86
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_Opcode&Name&PrefixV86:
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or ebx, PREFIX_FLAG_&Name
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jmp _OpcodeGenericPrefixV86
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.endfunc
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.endm
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//
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// @name INVALID_V86_OPCODE
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//
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// This macro prints out visible message and hangs the computer.
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//
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// @param None.
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//
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// @remark Temporary debugging use.
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//
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.macro UNHANDLED_V86_OPCODE
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/* Print debug message, breakpoint and freeze */
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push ecx
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push offset V86DebugMsg
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call _DbgPrint
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add esp, 8
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jmp $
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.endm
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//
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// @name TRAP_FIXUPS
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//
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@ -450,6 +524,96 @@ V86_&Label:
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2:
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.endm
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//
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// @name TRAP_PROLOG
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//
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// This macro creates a standard trap entry prologue.
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// It should be used for entry into any kernel trap (KiTrapXx), but not for
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// system calls, which require special handling.
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//
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// @param Label
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// Identifying name of the caller function; will be used to append
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// to the name V86 and DR helper functions, which must already exist.
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//
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// @remark Use as follows:
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// _KiTrap00:
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// /* Push fake error code */
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// push 0
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//
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// /* Enter common prologue */
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// TRAP_PROLOG(0)
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//
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// /* Handle trap */
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// <Your Trap Code Here>
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//
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.macro TRAP_PROLOG Label EndLabel
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/* Just to be safe, clear out the HIWORD, since it's reserved */
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mov word ptr [esp+2], 0
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/* Save the non-volatiles */
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push ebp
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push ebx
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push esi
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push edi
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/* Save FS and set it to PCR */
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push fs
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mov ebx, KGDT_R0_PCR
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.byte 0x66
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mov fs, bx
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/* Save exception list and bogus previous mode */
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push fs:[KPCR_EXCEPTION_LIST]
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push -1
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/* Save volatiles and segment registers */
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push eax
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push ecx
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push edx
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push ds
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push es
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push gs
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/* Set the R3 data segment */
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mov ax, KGDT_R3_DATA + RPL_MASK
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/* Skip debug registers and debug stuff */
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sub esp, 0x30
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/* Load the segment registers */
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.byte 0x66
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mov ds, ax
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.byte 0x66
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mov es, ax
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/* Check if this interrupt happened in 16-bit mode */
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cmp esp, 0x10000
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jb _Ki16BitStackException
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/* Set up frame */
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mov ebp, esp
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/* Check if this was from V86 Mode */
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test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
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jnz V86_&Label
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V86_&EndLabel:
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/* Get current thread */
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mov ecx, fs:[KPCR_CURRENT_THREAD]
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cld
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/* Flush DR7 */
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and dword ptr [ebp+KTRAP_FRAME_DR7], 0
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/* Check if the thread was being debugged */
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test byte ptr [ecx+KTHREAD_DEBUG_ACTIVE], 0xFF
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jnz Dr_&Label
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/* Set the Trap Frame Debug Header */
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Dr_&EndLabel:
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SET_TF_DEBUG_HEADER
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.endm
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//
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// @name INT_PROLOG
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//
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@ -734,6 +898,164 @@ Dr_&EndLabel:
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sti
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.endm
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//
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// @name V86_TRAP_PROLOG
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//
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// This macro creates a V86 Trap entry prologue.
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// It should be used for entry into any fast-system call (KiGetTickCount,
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// KiCallbackReturn, KiRaiseAssertion) and the generic system call handler
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// (KiSystemService)
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//
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// @param Label
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// Unique label identifying the name of the caller function; will be
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// used to append to the name of the DR helper function, which must
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// already exist.
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//
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// @remark None.
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//
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.macro V86_TRAP_PROLOG Label EndLabel
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/* Skip everything to the error code */
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sub esp, KTRAP_FRAME_ERROR_CODE
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/* Clear the error code */
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mov word ptr [esp+KTRAP_FRAME_ERROR_CODE+2], 0
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/* Save the registers we'll trample */
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mov [esp+KTRAP_FRAME_EBX], ebx
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mov [esp+KTRAP_FRAME_EAX], eax
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mov [esp+KTRAP_FRAME_EBP], ebp
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mov [esp+KTRAP_FRAME_ESI], esi
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mov [esp+KTRAP_FRAME_EDI], edi
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/* Save PCR and Ring 3 segments */
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mov ebx, KGDT_R0_PCR
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mov eax, KGDT_R3_DATA + RPL_MASK
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/* Save ECX and EDX too */
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mov [esp+KTRAP_FRAME_ECX], ecx
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mov [esp+KTRAP_FRAME_EDX], edx
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/* Set debugging markers */
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mov dword ptr [esp+KTRAP_FRAME_PREVIOUS_MODE], -1
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mov dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
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/* Now set segments (use OVERRIDE, 0x66) */
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.byte 0x66
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mov fs, bx
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.byte 0x66
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mov ds, ax
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.byte 0x66
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mov es, ax
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/* Set the trap frame in the stack and clear the direction flag */
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mov ebp, esp
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cld
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/* Save the exception list */
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mov eax, fs:[KPCR_EXCEPTION_LIST]
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mov [esp+KTRAP_FRAME_EXCEPTION_LIST], eax
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/* Check if we need debugging */
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mov eax, dr7
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test eax, ~DR7_RESERVED_MASK
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mov [esp+KTRAP_FRAME_DR7], eax
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jnz Dr_&Label
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Dr_&EndLabel:
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.endm
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//
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// @name V86_TRAP_EPILOG
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//
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// This macro creates an epilogue for leaving V86 traps
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//
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// @param None.
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//
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// @remark None.
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//
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.macro V86_TRAP_EPILOG
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/* Get the current thread and make it unalerted */
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ExitBegin:
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mov ebx, PCR[KPCR_CURRENT_THREAD]
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mov byte ptr [ebx+KTHREAD_ALERTED], 0
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/* Check if it has User-mode APCs pending */
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cmp byte ptr [ebx+KTHREAD_PENDING_USER_APC], 0
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jne PendingUserApc
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/* It doesn't, pop the frame */
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add esp, KTRAP_FRAME_EDX
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pop edx
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pop ecx
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pop eax
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/* Check if DR registers should be restored */
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test dword ptr [ebp+KTRAP_FRAME_DR7], ~DR7_RESERVED_MASK
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jnz V86DebugRestore
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/* Finish popping the rest of the frame, and return to P-mode */
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V86DebugContinue:
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add esp, 12
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pop edi
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pop esi
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pop ebx
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pop ebp
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add esp, 4
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iretd
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V86DebugRestore:
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/* Get DR0, 1 */
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xor ebx, ebx
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mov esi, [ebp+KTRAP_FRAME_DR0]
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mov edi, [ebp+KTRAP_FRAME_DR1]
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/* Clear DR 7 */
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mov dr7, ebx
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/* Get DR2 and load DR0-2 */
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mov ebx, [ebp+KTRAP_FRAME_DR2]
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mov dr0, esi
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mov dr1, edi
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mov dr2, ebx
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/* Get DR3-7 */
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mov esi, [ebp+KTRAP_FRAME_DR0]
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mov edi, [ebp+KTRAP_FRAME_DR1]
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mov ebx, [ebp+KTRAP_FRAME_DR7]
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/* Load them */
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mov dr3, esi
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mov dr6, edi
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mov dr7, ebx
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jmp V86DebugContinue
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PendingUserApc:
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/* Raise to APC level */
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mov ecx, APC_LEVEL
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call @KfRaiseIrql@4
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/* Save KIRQL and deliver APCs */
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push eax
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sti
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push ebp
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push 0
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push UserMode
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call _KiDeliverApc@12
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/* Restore IRQL */
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pop ecx
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call @KfLowerIrql@4
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cli
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/* Check if we're not in V86 anymore */
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test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
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jnz ExitBegin
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.endm
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//
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// @name TRAP_EPILOG
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//
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