--- trunk/reactos/ntoskrnl/ke/i386/syscall.S 2005-07-03 21:35:41 UTC (rev 16400)
+++ trunk/reactos/ntoskrnl/ke/i386/syscall.S 2005-07-03 21:37:16 UTC (rev 16401)
@@ -25,16 +25,16 @@
.globl _KiDebugService
_KiFastCallEntry:
-
+
/* Set FS to PCR */
movl $PCR_SELECTOR, %ecx
movw %cx, %fs
-
+
/* Set the current stack to Kernel Stack */
movl %fs:KPCR_TSS, %ecx
movl %ss:KTSS_ESP0(%ecx), %ecx
movl %ecx, %esp
-
+
/* Set up a fake INT Stack. */
pushl $USER_DS
pushl %edx /* Ring 3 SS:ESP */
@@ -42,13 +42,13 @@
orl $X86_EFLAGS_IF, (%esp) /* Re-enable IRQs in EFLAGS, to fake INT */
pushl $USER_CS
pushl $KUSER_SHARED_SYSCALL_RET
-
+
/* User Parameter List */
add $8, %edx
-
+
_KiSystemService:
- /*
+ /*
* Construct a trap frame on the stack.
* The following are already on the stack.
*/
@@ -63,11 +63,11 @@
pushl %esi // + 0x20
pushl %edi // + 0x24
pushl %fs // + 0x28
-
+
/* Load PCR Selector into fs */
movw $PCR_SELECTOR, %bx
movw %bx, %fs
-
+
/* Save the previous exception list */
pushl %fs:KPCR_EXCEPTION_LIST // + 0x2C
@@ -79,7 +79,7 @@
/* Save the old previous mode */
pushl %ss:KTHREAD_PREVIOUS_MODE(%esi) // + 0x30
-
+
/* Set the new previous mode based on the saved CS selector */
movl 0x24(%esp), %ebx
andl $1, %ebx
@@ -120,7 +120,7 @@
movl %ebp, KTHREAD_TRAP_FRAME(%esi)
CheckValidCall:
-
+
#ifdef DBG
/*
* GDB thinks the function starts here and
@@ -139,29 +139,29 @@
shrl $8, %edi
andl $0x10, %edi
movl %edi, %ecx
-
+
/* Now add the thread's base system table to the offset */
addl KTHREAD_SERVICE_TABLE(%esi), %edi
-
+
/* Get the true syscall ID and check it */
movl %eax, %ebx
andl $0x0FFF, %eax
cmpl 8(%edi), %eax
-
+
/* Invalid ID, try to load Win32K Table */
jnb KiBBTUnexpectedRange
/* Users's current stack frame pointer is source */
movl %edx, %esi
-
+
/* Allocate room for argument list from kernel stack */
movl 12(%edi), %ecx
movb (%ecx, %eax), %cl
movzx %cl, %ecx
-
+
/* Allocate space on our stack */
subl %ecx, %esp
-
+
/* Get pointer to function */
movl (%edi), %edi
movl (%edi, %eax, 4), %eax
@@ -193,25 +193,25 @@
/* Get the Current Thread */
cli
movl %fs:KPCR_CURRENT_THREAD, %esi
-
+
/* Deliver APCs only if we were called from user mode */
testb $1, KTRAP_FRAME_CS(%esp)
je KiRosTrapReturn
-
+
/* And only if any are actually pending */
cmpb $0, KTHREAD_PENDING_USER_APC(%esi)
je KiRosTrapReturn
-
+
/* Save pointer to Trap Frame */
movl %esp, %ebx
-
+
/* Raise IRQL to APC_LEVEL */
movl $1, %ecx
call @KfRaiseIrql@4
-
+
/* Save old IRQL */
pushl %eax
-
+
/* Deliver APCs */
sti
pushl %ebx
@@ -219,13 +219,13 @@
pushl $UserMode
call _KiDeliverApc@12
cli
-
+
/* Return to old IRQL */
popl %ecx
call @KfLowerIrql@4
-
+
KiRosTrapReturn:
-
+
/* Skip debug information and unsaved registers */
addl $0x30, %esp // + 0x48
popl %gs // + 0x44
@@ -252,11 +252,11 @@
/* Check if previous CS is from user-mode */
testl $1, 4(%esp)
-
+
/* It is, so use Fast Exit */
jnz FastRet
-
- /*
+
+ /*
* Restore what the stub pushed, and return back to it.
* Note that we were CALLed, so the first thing on our stack is the ret EIP!
*/
@@ -264,9 +264,9 @@
pop %ecx // + 0x08
popf // + 0x04
jmp *%edx
-
+
IntRet:
-
+
iret
FastRet:
@@ -278,15 +278,15 @@
/* Restore FS to TIB */
mov $TEB_SELECTOR, %ecx
mov %ecx, %fs
-
+
/* We will be cleaning up the stack ourselves */
popl %edx /* New Ring 3 EIP */
add $0x4, %esp /* Skip Ring 3 DS */
andl $~X86_EFLAGS_IF, (%esp) /* Remove IRQ hack from EFLAGS */
popfl /* Restore old EFLAGS */
- popl %ecx /* Old Ring 3 SS:ESP */
-
- /*
+ popl %ecx /* Old Ring 3 SS:ESP */
+
+ /*
* At this point:
* ECX points to the old User Stack.
* EDX points to the instruction to execute in usermode after the sysenter
@@ -306,41 +306,41 @@
call _KiServiceCheck
popl %eax
popl %edx
-
+
/* Try the Call again */
jmp CheckValidCall
-
+
InvalidCall:
/* Invalid System Call */
movl $0xC000001C, %eax /* STATUS_INVALID_SYSTEM_SERVICE */
movl %eax, KTRAP_FRAME_EAX(%ebp)
jmp _KiServiceExit
-
+
_KiServiceExit2:
/* Get the Current Thread */
cli
movl %fs:KPCR_CURRENT_THREAD, %esi
-
+
/* Deliver APCs only if we were called from user mode */
testb $1, KTRAP_FRAME_CS(%esp)
je KiRosTrapReturn
-
+
/* And only if any are actually pending */
cmpb $0, KTHREAD_PENDING_USER_APC(%esi)
je KiRosTrapReturn
-
+
/* Save pointer to Trap Frame */
movl %esp, %ebx
-
+
/* Raise IRQL to APC_LEVEL */
movl $1, %ecx
call @KfRaiseIrql@4
-
+
/* Save old IRQL */
pushl %eax
-
+
/* Deliver APCs */
sti
pushl %ebx
@@ -348,14 +348,14 @@
pushl $UserMode
call _KiDeliverApc@12
cli
-
+
/* Return to old IRQL */
popl %ecx
call @KfLowerIrql@4
-
+
/* Skip useless Debug Data */
addl $0x18, %esp // + 0x74
-
+
/* Restore Debug Registers */
popl %eax // + 0x5C
movl %eax, %dr0
@@ -369,7 +369,7 @@
movl %eax, %dr6
popl %eax // + 0x48
movl %eax, %dr7
-
+
/* Restore Registers */
popl %gs // + 0x44
popl %es // + 0x40
@@ -393,12 +393,12 @@
popl %ebp // + 0x14
add $4, %esp // + 0x10
- /* Return to user-mode */
+ /* Return to user-mode */
iret
-
+
.intel_syntax noprefix
_KiDebugService:
-
+
/* Create the Trap Frame */
push 0
push ebp
@@ -406,18 +406,18 @@
push esi
push edi
push fs
-
+
/* Switch to correct FS */
mov bx, PCR_SELECTOR
mov fs, bx
-
+
/* Save Exception List */
push fs:[KPCR_EXCEPTION_LIST]
-
+
/* Use Old Previous Mode */
mov ebx, fs:[KPCR_CURRENT_THREAD]
push [ebx+KTHREAD_PREVIOUS_MODE]
-
+
/* Continue building the Trap Frame */
push eax
push ecx
@@ -425,28 +425,28 @@
push ds
push es
push gs
-
+
/* Switch Segments to Kernel */
mov bx, KERNEL_DS
mov ds, bx
mov es, bx
-
+
/* Save Debug Registers */
mov ebx, eax
- mov eax, dr7
+ mov eax, dr7
push eax
- mov eax, dr6
+ mov eax, dr6
push eax
- mov eax, dr3
+ mov eax, dr3
push eax
- mov eax, dr2
+ mov eax, dr2
push eax
- mov eax, dr1
+ mov eax, dr1
push eax
- mov eax, dr0
+ mov eax, dr0
push eax
mov eax, ebx
-
+
/* Skip useless debug data */
sub esp, 0x18
@@ -455,6 +455,6 @@
push ecx
push eax
call _KdpServiceDispatcher@12
-
+
/* Exit through common routine */
jmp _KiServiceExit2
--- trunk/reactos/ntoskrnl/ke/i386/tlbflush.S 2005-07-03 21:35:41 UTC (rev 16400)
+++ trunk/reactos/ntoskrnl/ke/i386/tlbflush.S 2005-07-03 21:37:16 UTC (rev 16401)
@@ -1,7 +1,8 @@
-/* i386-specific implemetation of Translation Buffer Flushing
+/*
+ * i386-specific implemetation of Translation Buffer Flushing
* Written By: Alex Ionescu <alex@relsoft.net>
* Reference: IA-32 Intel« Architecture Software Developer's Manual, Volume 3: System Programming Guide,
- * Chapter 10 - Memory Cache Control. Section 10.9 - Invalidating the Translation Lookaside Buffers
+ * Chapter 10 - Memory Cache Control. Section 10.9 - Invalidating the Translation Lookaside Buffers
*/
#include <internal/i386/ke.h>
@@ -9,24 +10,20 @@
.globl _KeFlushCurrentTb@0
_KeFlushCurrentTb@0:
- /* Check for global page support */
- testb $0xff, (_Ke386GlobalPagesEnabled)
- jz .L1
+ /* Check for global page support */
+ testb $0xff, (_Ke386GlobalPagesEnabled)
+ jz .L1
- /* Modifying the PSE, PGE or PAE Flag in CR4 causes the TLB to be flushed */
- movl %cr4, %eax
- andl $~X86_CR4_PGE, %eax
- movl %eax, %cr4
- orl $X86_CR4_PGE, %eax
- movl %eax, %cr4
-
- ret
+ /* Modifying the PSE, PGE or PAE Flag in CR4 causes the TLB to be flushed */
+ movl %cr4, %eax
+ andl $~X86_CR4_PGE, %eax
+ movl %eax, %cr4
+ orl $X86_CR4_PGE, %eax
+ movl %eax, %cr4
+ ret
.L1:
/* the old way ... */
- movl %cr3, %eax
- movl %eax, %cr3
- ret
-
-
-
+ movl %cr3, %eax
+ movl %eax, %cr3
+ ret