Changeset 91d5ad6 in mainline for arch/ppc32/src/exception.S

Timestamp:

2006-03-15T00:55:05Z (19 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

286e03d

Parents:

d1e414c

Message:

ppc32: basic exception and interrupt handling

File:

• arch/ppc32/src/exception.S (modified) (2 diffs)

arch/ppc32/src/exception.S

@@ -28 +28 @@
 
 #include <arch/asm/regname.h>
-#include <arch/asm/spr.h>
+#include <arch/mm/page.h>
 
 .section K_UNMAPPED_TEXT_START, "ax"
@@ -85 +85 @@
 .global exc_decrementer
 exc_decrementer:
+        mtspr sprg1, sp
+        
+        subis sp, sp, 0x8000
+        
+        subi sp, sp, 144
+        stw r0, 0(sp)
+        stw r2, 4(sp)
+        stw r3, 8(sp)
+        stw r4, 12(sp)
+        stw r5, 16(sp)
+        stw r6, 20(sp)
+        stw r7, 24(sp)
+        stw r8, 28(sp)
+        stw r9, 32(sp)
+        stw r10, 36(sp)
+        stw r11, 40(sp)
+        stw r12, 44(sp)
+        stw r13, 48(sp)
+        stw r14, 52(sp)
+        stw r15, 56(sp)
+        stw r16, 60(sp)
+        stw r17, 64(sp)
+        stw r18, 68(sp)
+        stw r19, 72(sp)
+        stw r20, 76(sp)
+        stw r21, 80(sp)
+        stw r22, 84(sp)
+        stw r23, 88(sp)
+        stw r24, 92(sp)
+        stw r25, 96(sp)
+        stw r26, 100(sp)
+        stw r27, 104(sp)
+        stw r28, 108(sp)
+        stw r29, 112(sp)
+        stw r30, 116(sp)
+        stw r31, 120(sp)
+        
+        mfspr r3, srr0
+        stw r3, 124(sp)
+        
+        mfspr r3, srr1
+        stw r3, 128(sp)
+        
+        mflr r3
+        stw r3, 132(sp)
+        
+        mfcr r3
+        stw r3, 136(sp)
+        
+        mfctr r3
+        stw r3, 140(sp)
+        
+        mfxer r3
+        stw r3, 144(sp)
+
+        lis r3, exc_dispatch@ha
+        addi r3, r3, exc_dispatch@l
+        mtspr srr0, r3
+        
+        mfmsr r3
+        ori r3, r3, (msr_ir | msr_dr)@l
+        mtspr srr1, r3
+        
+        lis r3, iret@ha
+        addi r3, r3, iret@l
+        mtlr r3
+        
+        addis sp, sp, 0x8000
+        li r3, 10
         rfi
-        b exc_decrementer
 
 .org 0xa00