WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ppc32/src/exception.S

+#
 # Copyright (C) 2006 Martin Decky
 # All rights reserved.
+#
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
+#
 # - Redistributions of source code must retain the above copyright
 #   notice, this list of conditions and the following disclaimer.
 # - Redistributions in binary form must reproduce the above copyright
 #   notice, this list of conditions and the following disclaimer in the
 #   documentation and/or other materials provided with the distribution.
 # - The name of the author may not be used to endorse or promote products
 #   derived from this software without specific prior written permission.
+#
 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
 #include <arch/asm/regname.h>
 #include <arch/mm/page.h>
 .section K_UNMAPPED_TEXT_START, "ax"
 .macro CONTEXT_STORE
 	# save R12 in SPRG1, backup CR in R12
 	# save SP in SPRG2
 	mtsprg1 r12
 	mfcr r12
 	mtsprg2 sp
 	# check whether SP is in kernel
 	andis. sp, sp, 0x8000
 	bne 1f
 		# stack is in user-space
 		mfsprg0 sp
 	b 2f
 :
 		# stack is in kernel
 		mfsprg2 sp
 		subis sp, sp, 0x8000
 :
 	subi sp, sp, 160
 	stw r0, 8(sp)
 	stw r2, 12(sp)
 	stw r3, 16(sp)
 	stw r4, 20(sp)
 	stw r5, 24(sp)
 	stw r6, 28(sp)
 	stw r7, 32(sp)
 	stw r8, 36(sp)
 	stw r9, 40(sp)
 	stw r10, 44(sp)
 	stw r11, 48(sp)
 	stw r13, 52(sp)
 	stw r14, 56(sp)
 	stw r15, 60(sp)
 	stw r16, 64(sp)
 	stw r17, 68(sp)
 	stw r18, 72(sp)
 	stw r19, 76(sp)
 	stw r20, 80(sp)
 	stw r21, 84(sp)
 	stw r22, 88(sp)
 	stw r23, 92(sp)
 	stw r24, 96(sp)
 	stw r25, 100(sp)
 	stw r26, 104(sp)
 	stw r27, 108(sp)
 	stw r28, 112(sp)
 	stw r29, 116(sp)
 	stw r30, 120(sp)
 	stw r31, 124(sp)
 	stw r12, 128(sp)
 	mfsrr0 r12
 	stw r12, 132(sp)
 	mfsrr1 r12
 	stw r12, 136(sp)
 	mflr r12
 	stw r12, 140(sp)
 	mfctr r12
 	stw r12, 144(sp)
 	mfxer r12
 	stw r12, 148(sp)
 	mfsprg1 r12
 	stw r12, 152(sp)
 	mfsprg2 r12
 	stw r12, 156(sp)
 .endm
 .org 0x060
 jump_to_kernel:
 	lis r12, iret@ha
 	addi r12, r12, iret@l
 	mtlr r12
 	mfmsr r12
 	ori r12, r12, (msr_ir | msr_dr)@l
 	mtsrr1 r12
 	addis sp, sp, 0x8000
 	mr r4, sp
 	addi r4, r4, 8
 	rfi
 jump_to_kernel_syscall:
 	lis r12, syscall_handler@ha
 	addi r12, r12, syscall_handler@l
 	mtsrr0 r12
 	lis r12, iret_syscall@ha
 	addi r12, r12, iret_syscall@l
 	mtlr r12
 	mfmsr r12
 	ori r12, r12, (msr_ir | msr_dr)@l
 	mtsrr1 r12
 	addis sp, sp, 0x8000
 	rfi
 .org 0x100
 .global exc_system_reset
 exc_system_reset:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 0
-	b exc_system_reset
+	b jump_to_kernel
 .org 0x200
 .global exc_machine_check
 exc_machine_check:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 1
-	b exc_machine_check
+	b jump_to_kernel
 .org 0x300
 .global exc_data_storage
 exc_data_storage:
 	CONTEXT_STORE
-	lis r12, pht_refill@ha
+	lis r12, exc_dispatch@ha
-	addi r12, r12, pht_refill@l
+	addi r12, r12, exc_dispatch@l
 	mtsrr0 r12
-	li r3, 1
+	li r3, 2
 	b jump_to_kernel
 .org 0x400
 .global exc_instruction_storage
 exc_instruction_storage:
 	CONTEXT_STORE
-	lis r12, pht_refill@ha
+	lis r12, exc_dispatch@ha
-	addi r12, r12, pht_refill@l
+	addi r12, r12, exc_dispatch@l
 	mtsrr0 r12
-	li r3, 0
+	li r3, 3
 	b jump_to_kernel
 .org 0x500
 .global exc_external
 exc_external:
 	CONTEXT_STORE
-	lis r12, extint_handler@ha
+	lis r12, exc_dispatch@ha
-	addi r12, r12, extint_handler@l
+	addi r12, r12, exc_dispatch@l
 	mtsrr0 r12
-	li r3, 0
+	li r3, 4
 	b jump_to_kernel
 .org 0x600
 .global exc_alignment
 exc_alignment:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 5
-	b exc_alignment
+	b jump_to_kernel
 .org 0x700
 .global exc_program
 exc_program:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 6
-	b exc_program
+	b jump_to_kernel
 .org 0x800
 .global exc_fp_unavailable
 exc_fp_unavailable:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 7
-	b exc_fp_unavailable
+	b jump_to_kernel
 .org 0x900
 .global exc_decrementer
 exc_decrementer:
 	CONTEXT_STORE
 	lis r12, exc_dispatch@ha
 	addi r12, r12, exc_dispatch@l
 	mtsrr0 r12
-	li r3, 10
+	li r3, 8
 	b jump_to_kernel
 .org 0xa00
 .global exc_reserved0
 exc_reserved0:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 9
-	b exc_reserved0
+	b jump_to_kernel
 .org 0xb00
 .global exc_reserved1
 exc_reserved1:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 10
-	b exc_reserved1
+	b jump_to_kernel
 .org 0xc00
 .global exc_syscall
 exc_syscall:
 	CONTEXT_STORE
 	b jump_to_kernel_syscall
 .org 0xd00
 .global exc_trace
 exc_trace:
+	CONTEXT_STORE
+	lis r12, exc_dispatch@ha
+	addi r12, r12, exc_dispatch@l
+	mtsrr0 r12
+	li r3, 12
-	b exc_trace
+	b jump_to_kernel

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ppc32/src/exception.S – Rev 1480 → 1609