Author: sir_richard
Date: Mon Jan 11 07:41:19 2010
New Revision: 45041
URL: http://svn.reactos.org/svn/reactos?rev=45041&view=rev
Log:
[NTOS]: Put ASM macros back since the HAL also uses them.
Modified:
trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
Modified: trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S?rev=45041&r1=45040&r2=45041&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S [iso-8859-1]
(original)
+++ trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S [iso-8859-1] Mon
Jan 11 07:41:19 2010
@@ -114,6 +114,28 @@
.endm
//
+// @name UNHANDLED_V86_PATH
+//
+// This macro prints out that the current code path is for unhandled VDM
support
+//
+// @param None
+//
+// @remark None.
+//
+.macro UNHANDLED_V86_PATH
+ /* Get EIP */
+ call $+5
+
+ /* Print debug message */
+ push offset _V86UnhandledMsg
+ call _DbgPrint
+ add esp, 8
+
+ /* Loop indefinitely */
+ jmp $
+.endm
+
+//
// @name IDT
//
// This macro creates an IDT entry for the given handler
@@ -255,6 +277,58 @@
.endm
//
+// @name INVALID_V86_OPCODE
+//
+// This macro creates one or more entries for unhandled V86 Opcodes
+// in the V86 Opcode Table.
+//
+// @param count.
+// Number of entries to generate.
+//
+// @remark None.
+//
+.macro INVALID_V86_OPCODE count
+ .rept \count
+ .byte 0
+ .endr
+.endm
+
+//
+// @name GENERATE_PREFIX_HANDLER
+//
+// This macro creates a prefix opcode handler.
+//
+// @param None.
+//
+// @remark None.
+//
+.macro GENERATE_PREFIX_HANDLER Name
+.func Opcode&Name&PrefixV86
+_Opcode&Name&PrefixV86:
+ or ebx, PREFIX_FLAG_&Name
+ jmp _OpcodeGenericPrefixV86
+.endfunc
+.endm
+
+//
+// @name INVALID_V86_OPCODE
+//
+// This macro prints out visible message and hangs the computer.
+//
+// @param None.
+//
+// @remark Temporary debugging use.
+//
+.macro UNHANDLED_V86_OPCODE
+ /* Print debug message, breakpoint and freeze */
+ push ecx
+ push offset V86DebugMsg
+ call _DbgPrint
+ add esp, 8
+ jmp $
+.endm
+
+//
// @name TRAP_FIXUPS
//
// This macro contains out-of-line code for various Trap Frame Fixups, such as:
@@ -448,6 +522,96 @@
cli
jmp 1b
2:
+.endm
+
+//
+// @name TRAP_PROLOG
+//
+// This macro creates a standard trap entry prologue.
+// It should be used for entry into any kernel trap (KiTrapXx), but not for
+// system calls, which require special handling.
+//
+// @param Label
+// Identifying name of the caller function; will be used to append
+// to the name V86 and DR helper functions, which must already exist.
+//
+// @remark Use as follows:
+// _KiTrap00:
+// /* Push fake error code */
+// push 0
+//
+// /* Enter common prologue */
+// TRAP_PROLOG(0)
+//
+// /* Handle trap */
+// <Your Trap Code Here>
+//
+.macro TRAP_PROLOG Label EndLabel
+ /* Just to be safe, clear out the HIWORD, since it's reserved */
+ mov word ptr [esp+2], 0
+
+ /* Save the non-volatiles */
+ push ebp
+ push ebx
+ push esi
+ push edi
+
+ /* Save FS and set it to PCR */
+ push fs
+ mov ebx, KGDT_R0_PCR
+ .byte 0x66
+ mov fs, bx
+
+ /* Save exception list and bogus previous mode */
+ push fs:[KPCR_EXCEPTION_LIST]
+ push -1
+
+ /* Save volatiles and segment registers */
+ push eax
+ push ecx
+ push edx
+ push ds
+ push es
+ push gs
+
+ /* Set the R3 data segment */
+ mov ax, KGDT_R3_DATA + RPL_MASK
+
+ /* Skip debug registers and debug stuff */
+ sub esp, 0x30
+
+ /* Load the segment registers */
+ .byte 0x66
+ mov ds, ax
+ .byte 0x66
+ mov es, ax
+
+ /* Check if this interrupt happened in 16-bit mode */
+ cmp esp, 0x10000
+ jb _Ki16BitStackException
+
+ /* Set up frame */
+ mov ebp, esp
+
+ /* Check if this was from V86 Mode */
+ test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
+ jnz V86_&Label
+
+V86_&EndLabel:
+ /* Get current thread */
+ mov ecx, fs:[KPCR_CURRENT_THREAD]
+ cld
+
+ /* Flush DR7 */
+ and dword ptr [ebp+KTRAP_FRAME_DR7], 0
+
+ /* Check if the thread was being debugged */
+ test byte ptr [ecx+KTHREAD_DEBUG_ACTIVE], 0xFF
+ jnz Dr_&Label
+
+ /* Set the Trap Frame Debug Header */
+Dr_&EndLabel:
+ SET_TF_DEBUG_HEADER
.endm
//
@@ -735,6 +899,164 @@
.endm
//
+// @name V86_TRAP_PROLOG
+//
+// This macro creates a V86 Trap entry prologue.
+// It should be used for entry into any fast-system call (KiGetTickCount,
+// KiCallbackReturn, KiRaiseAssertion) and the generic system call handler
+// (KiSystemService)
+//
+// @param Label
+// Unique label identifying the name of the caller function; will be
+// used to append to the name of the DR helper function, which must
+// already exist.
+//
+// @remark None.
+//
+.macro V86_TRAP_PROLOG Label EndLabel
+
+ /* Skip everything to the error code */
+ sub esp, KTRAP_FRAME_ERROR_CODE
+
+ /* Clear the error code */
+ mov word ptr [esp+KTRAP_FRAME_ERROR_CODE+2], 0
+
+ /* Save the registers we'll trample */
+ mov [esp+KTRAP_FRAME_EBX], ebx
+ mov [esp+KTRAP_FRAME_EAX], eax
+ mov [esp+KTRAP_FRAME_EBP], ebp
+ mov [esp+KTRAP_FRAME_ESI], esi
+ mov [esp+KTRAP_FRAME_EDI], edi
+
+ /* Save PCR and Ring 3 segments */
+ mov ebx, KGDT_R0_PCR
+ mov eax, KGDT_R3_DATA + RPL_MASK
+
+ /* Save ECX and EDX too */
+ mov [esp+KTRAP_FRAME_ECX], ecx
+ mov [esp+KTRAP_FRAME_EDX], edx
+
+ /* Set debugging markers */
+ mov dword ptr [esp+KTRAP_FRAME_PREVIOUS_MODE], -1
+ mov dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
+
+ /* Now set segments (use OVERRIDE, 0x66) */
+ .byte 0x66
+ mov fs, bx
+ .byte 0x66
+ mov ds, ax
+ .byte 0x66
+ mov es, ax
+
+ /* Set the trap frame in the stack and clear the direction flag */
+ mov ebp, esp
+ cld
+
+ /* Save the exception list */
+ mov eax, fs:[KPCR_EXCEPTION_LIST]
+ mov [esp+KTRAP_FRAME_EXCEPTION_LIST], eax
+
+ /* Check if we need debugging */
+ mov eax, dr7
+ test eax, ~DR7_RESERVED_MASK
+ mov [esp+KTRAP_FRAME_DR7], eax
+ jnz Dr_&Label
+
+Dr_&EndLabel:
+.endm
+
+//
+// @name V86_TRAP_EPILOG
+//
+// This macro creates an epilogue for leaving V86 traps
+//
+// @param None.
+//
+// @remark None.
+//
+.macro V86_TRAP_EPILOG
+
+ /* Get the current thread and make it unalerted */
+ExitBegin:
+ mov ebx, PCR[KPCR_CURRENT_THREAD]
+ mov byte ptr [ebx+KTHREAD_ALERTED], 0
+
+ /* Check if it has User-mode APCs pending */
+ cmp byte ptr [ebx+KTHREAD_PENDING_USER_APC], 0
+ jne PendingUserApc
+
+ /* It doesn't, pop the frame */
+ add esp, KTRAP_FRAME_EDX
+ pop edx
+ pop ecx
+ pop eax
+
+ /* Check if DR registers should be restored */
+ test dword ptr [ebp+KTRAP_FRAME_DR7], ~DR7_RESERVED_MASK
+ jnz V86DebugRestore
+
+ /* Finish popping the rest of the frame, and return to P-mode */
+V86DebugContinue:
+ add esp, 12
+ pop edi
+ pop esi
+ pop ebx
+ pop ebp
+ add esp, 4
+ iretd
+
+V86DebugRestore:
+
+ /* Get DR0, 1 */
+ xor ebx, ebx
+ mov esi, [ebp+KTRAP_FRAME_DR0]
+ mov edi, [ebp+KTRAP_FRAME_DR1]
+
+ /* Clear DR 7 */
+ mov dr7, ebx
+
+ /* Get DR2 and load DR0-2 */
+ mov ebx, [ebp+KTRAP_FRAME_DR2]
+ mov dr0, esi
+ mov dr1, edi
+ mov dr2, ebx
+
+ /* Get DR3-7 */
+ mov esi, [ebp+KTRAP_FRAME_DR0]
+ mov edi, [ebp+KTRAP_FRAME_DR1]
+ mov ebx, [ebp+KTRAP_FRAME_DR7]
+
+ /* Load them */
+ mov dr3, esi
+ mov dr6, edi
+ mov dr7, ebx
+ jmp V86DebugContinue
+
+PendingUserApc:
+
+ /* Raise to APC level */
+ mov ecx, APC_LEVEL
+ call @kfraisei...@4
+
+ /* Save KIRQL and deliver APCs */
+ push eax
+ sti
+ push ebp
+ push 0
+ push UserMode
+ call _kideliver...@12
+
+ /* Restore IRQL */
+ pop ecx
+ call @kfloweri...@4
+ cli
+
+ /* Check if we're not in V86 anymore */
+ test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
+ jnz ExitBegin
+.endm
+
+//
// @name TRAP_EPILOG
//
// This macro creates an epilogue for leaving any system trap.
