mirror of
https://github.com/reactos/reactos.git
synced 2024-06-29 01:12:06 +00:00
253 lines
5.7 KiB
ArmAsm
253 lines
5.7 KiB
ArmAsm
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* FILE: ntoskrnl/ke/powerpc/ctxhelp.S
|
|
* PURPOSE: Thread Context Switching
|
|
*
|
|
* PROGRAMMERS: arty
|
|
(i386 implementation by Alex Ionescu)
|
|
*/
|
|
|
|
/* INCLUDES ******************************************************************/
|
|
|
|
.text
|
|
.globl syscall_start
|
|
.globl syscall_end
|
|
.globl KiSystemService
|
|
syscall_start:
|
|
mtsprg0 0
|
|
mtsprg1 1
|
|
/* Save and modify srr0 */
|
|
/* Make a place to store the old srr0 and srr1 ... we may fault
|
|
* getting KiSystemService1 which will clobber them. */
|
|
lis 1,1
|
|
mfsrr0 0
|
|
stw 0,-16(1)
|
|
mfsrr1 0
|
|
stw 0,-12(1)
|
|
/* Load the target address */
|
|
lis 1,KiSystemService1@ha
|
|
addi 1,1,KiSystemService1@l
|
|
mtsrr0 1
|
|
mfsprg0 0
|
|
mfsprg1 1
|
|
rfi
|
|
syscall_end:
|
|
.space 4
|
|
|
|
.globl KiSystemService
|
|
.globl KiSystemService1
|
|
.globl kiss_proceed
|
|
.globl kiss_end
|
|
.align 8
|
|
KiSystemService1:
|
|
stwu 1,-256(1)
|
|
stw 0,16(1)
|
|
mflr 0
|
|
stw 0,264(1)
|
|
addi 1,1,16
|
|
stw 2,8(1)
|
|
stw 3,12(1)
|
|
stw 4,16(1)
|
|
stw 5,20(1)
|
|
stw 6,24(1)
|
|
stw 7,28(1)
|
|
stw 8,32(1)
|
|
stw 9,36(1)
|
|
stw 10,40(1)
|
|
stw 11,44(1)
|
|
stw 12,48(1)
|
|
stw 13,52(1)
|
|
stw 14,56(1)
|
|
stw 15,60(1)
|
|
stw 16,64(1)
|
|
stw 17,68(1)
|
|
stw 18,72(1)
|
|
stw 19,76(1)
|
|
stw 20,80(1)
|
|
stw 21,84(1)
|
|
stw 22,88(1)
|
|
stw 23,92(1)
|
|
stw 24,96(1)
|
|
stw 25,100(1)
|
|
stw 26,104(1)
|
|
stw 27,108(1)
|
|
stw 28,112(1)
|
|
stw 29,116(1)
|
|
stw 30,120(1)
|
|
stw 31,124(1)
|
|
mflr 0
|
|
stw 0,128(1)
|
|
mfctr 0
|
|
stw 0,136(1)
|
|
mfmsr 0
|
|
andi. 0,0,0xffef
|
|
mtmsr 0
|
|
lis 2,1
|
|
lwz 30,-12(2)
|
|
lwz 31,-16(2)
|
|
mfmsr 0
|
|
ori 0,0,0x10
|
|
mtmsr 0
|
|
stw 31,140(1)
|
|
stw 30,144(1)
|
|
mfdsisr 0
|
|
stw 0,148(1)
|
|
mfdar 0
|
|
stw 0,152(1)
|
|
lis 3,KiSystemService@ha
|
|
addi 3,3,KiSystemService@l
|
|
mtctr 3
|
|
mr 3,1
|
|
subi 1,1,16
|
|
bctrl
|
|
addi 1,1,16
|
|
/* Return from kernel */
|
|
lwz 3,32(1) /* Result */
|
|
lwz 0,128(1)
|
|
mtlr 0
|
|
lwz 0,140(1)
|
|
mtsrr0 0
|
|
lwz 0,144(1)
|
|
mtsrr1 0
|
|
addi 1,1,0x100 - 16
|
|
rfi
|
|
|
|
.globl KiDecrementerTrapHandler
|
|
.globl KiDecrementerTrapHandlerEnd
|
|
.globl KiDecrementerTrap
|
|
KiDecrementerTrapHandler:
|
|
mtsprg0 0
|
|
mtsprg1 1
|
|
/* Save and modify srr0 */
|
|
/* Make a place to store the old srr0 and srr1 ... we may fault
|
|
* getting KiSystemService1 which will clobber them. */
|
|
lis 1,1
|
|
mfsprg1 0
|
|
stw 0,-24(1)
|
|
mfsrr1 0
|
|
stw 0,-28(1)
|
|
mfsrr0 0
|
|
stw 0,-32(1)
|
|
/* Load the target address */
|
|
lis 1,KiDecrementerTrapUpper@ha
|
|
addi 1,1,KiDecrementerTrapUpper@l
|
|
mtsrr0 1
|
|
mfsprg0 0
|
|
mfsprg1 1
|
|
rfi
|
|
KiDecrementerTrapHandlerEnd:
|
|
.long 0
|
|
|
|
/* Decrementer needs to restore the full CPU state */
|
|
.globl KiDecrementerTrapUpper
|
|
.align 8
|
|
KiDecrementerTrapUpper:
|
|
lis 1,_kernel_trap_stack@ha
|
|
addi 1,1,_kernel_trap_stack@l
|
|
subi 1,1,0x200
|
|
stw 0,0x5c(1)
|
|
/* Stack handled a bit later */
|
|
stw 2,0x64(1)
|
|
stw 3,0x68(1)
|
|
stw 4,0x6c(1)
|
|
stw 5,0x70(1)
|
|
stw 6,0x74(1)
|
|
stw 7,0x78(1)
|
|
stw 8,0x7c(1)
|
|
stw 9,0x80(1)
|
|
stw 10,0x84(1)
|
|
stw 11,0x88(1)
|
|
stw 12,0x8c(1)
|
|
stw 13,0x90(1)
|
|
stw 14,0x94(1)
|
|
stw 15,0x98(1)
|
|
stw 16,0x9c(1)
|
|
stw 17,0xa0(1)
|
|
stw 18,0xa4(1)
|
|
stw 19,0xa8(1)
|
|
stw 20,0xac(1)
|
|
stw 21,0xb0(1)
|
|
stw 22,0xb4(1)
|
|
stw 23,0xb8(1)
|
|
stw 24,0xbc(1)
|
|
stw 25,0xc0(1)
|
|
stw 26,0xc4(1)
|
|
stw 27,0xc8(1)
|
|
stw 28,0xcc(1)
|
|
stw 29,0xd0(1)
|
|
stw 30,0xd4(1)
|
|
stw 31,0xd8(1)
|
|
mfcr 0
|
|
stw 0,0x108(1)
|
|
mfxer 0
|
|
stw 0,0x10c(1)
|
|
mflr 0
|
|
stw 0,0x118(1)
|
|
mfctr 0
|
|
stw 0,0x11c(1)
|
|
mfmsr 0
|
|
andi. 0,0,0x7fef
|
|
mtmsr 0
|
|
lis 2,1
|
|
lwz 29,-24(2) // Stack
|
|
lwz 30,-28(2) // srr1
|
|
lwz 31,-32(2) // srr0
|
|
mfmsr 0
|
|
ori 0,0,0x30
|
|
mtmsr 0
|
|
stw 29,0x60(1) // Stack
|
|
stw 30,0x110(1) // srr1
|
|
stw 31,0x114(1) // srr0
|
|
mr 3,1
|
|
subi 1,1,16
|
|
bl KiDecrementerTrap
|
|
addi 1,1,16
|
|
lwz 2,0x64(1)
|
|
lwz 3,0x68(1)
|
|
lwz 4,0x6c(1)
|
|
lwz 5,0x70(1)
|
|
lwz 6,0x74(1)
|
|
lwz 7,0x78(1)
|
|
lwz 8,0x7c(1)
|
|
lwz 9,0x80(1)
|
|
lwz 10,0x84(1)
|
|
lwz 11,0x88(1)
|
|
lwz 12,0x8c(1)
|
|
lwz 13,0x90(1)
|
|
lwz 14,0x94(1)
|
|
lwz 15,0x98(1)
|
|
lwz 16,0x9c(1)
|
|
lwz 17,0xa0(1)
|
|
lwz 18,0xa4(1)
|
|
lwz 19,0xa8(1)
|
|
lwz 20,0xac(1)
|
|
lwz 21,0xb0(1)
|
|
lwz 22,0xb4(1)
|
|
lwz 23,0xb8(1)
|
|
lwz 24,0xbc(1)
|
|
lwz 25,0xc0(1)
|
|
lwz 26,0xc4(1)
|
|
lwz 27,0xc8(1)
|
|
lwz 28,0xcc(1)
|
|
lwz 29,0xd0(1)
|
|
lwz 30,0xd4(1)
|
|
lwz 31,0xd8(1)
|
|
lwz 0,0x108(1)
|
|
mtcr 0
|
|
lwz 0,0x10c(1)
|
|
mtxer 0
|
|
lwz 0,0x110(1)
|
|
mtsrr1 0
|
|
lwz 0,0x114(1)
|
|
mtsrr0 0
|
|
lwz 0,0x118(1)
|
|
mtlr 0
|
|
lwz 0,0x11c(1)
|
|
mtctr 0
|
|
// back out r0 and r1
|
|
lwz 0,0x5c(1)
|
|
lwz 1,0x60(1)
|
|
// Bye!!1
|
|
rfi
|