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Diffstat (limited to 'arch/powerpc/include/asm/exception.h')
-rw-r--r--arch/powerpc/include/asm/exception.h42
1 files changed, 5 insertions, 37 deletions
diff --git a/arch/powerpc/include/asm/exception.h b/arch/powerpc/include/asm/exception.h
index 329148b5acc..d3d4534e3c7 100644
--- a/arch/powerpc/include/asm/exception.h
+++ b/arch/powerpc/include/asm/exception.h
@@ -53,14 +53,8 @@
* low halfword of the address, but for Kdump we need the whole low
* word.
*/
-#ifdef CONFIG_CRASH_DUMP
#define LOAD_HANDLER(reg, label) \
- oris reg,reg,(label)@h; /* virt addr of handler ... */ \
- ori reg,reg,(label)@l; /* .. and the rest */
-#else
-#define LOAD_HANDLER(reg, label) \
- ori reg,reg,(label)@l; /* virt addr of handler ... */
-#endif
+ addi reg,reg,(label)-_stext; /* virt addr of handler ... */
#define EXCEPTION_PROLOG_1(area) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
@@ -72,37 +66,12 @@
std r9,area+EX_R13(r13); \
mfcr r9
-/*
- * Equal to EXCEPTION_PROLOG_PSERIES, except that it forces 64bit mode.
- * The firmware calls the registered system_reset_fwnmi and
- * machine_check_fwnmi handlers in 32bit mode if the cpu happens to run
- * a 32bit application at the time of the event.
- * This firmware bug is present on POWER4 and JS20.
- */
-#define EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(area, label) \
- EXCEPTION_PROLOG_1(area); \
- clrrdi r12,r13,32; /* get high part of &label */ \
- mfmsr r10; \
- /* force 64bit mode */ \
- li r11,5; /* MSR_SF_LG|MSR_ISF_LG */ \
- rldimi r10,r11,61,0; /* insert into top 3 bits */ \
- /* done 64bit mode */ \
- mfspr r11,SPRN_SRR0; /* save SRR0 */ \
- LOAD_HANDLER(r12,label) \
- ori r10,r10,MSR_IR|MSR_DR|MSR_RI; \
- mtspr SPRN_SRR0,r12; \
- mfspr r12,SPRN_SRR1; /* and SRR1 */ \
- mtspr SPRN_SRR1,r10; \
- rfid; \
- b . /* prevent speculative execution */
-
#define EXCEPTION_PROLOG_PSERIES(area, label) \
EXCEPTION_PROLOG_1(area); \
- clrrdi r12,r13,32; /* get high part of &label */ \
- mfmsr r10; \
+ ld r12,PACAKBASE(r13); /* get high part of &label */ \
+ ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \
mfspr r11,SPRN_SRR0; /* save SRR0 */ \
LOAD_HANDLER(r12,label) \
- ori r10,r10,MSR_IR|MSR_DR|MSR_RI; \
mtspr SPRN_SRR0,r12; \
mfspr r12,SPRN_SRR1; /* and SRR1 */ \
mtspr SPRN_SRR1,r10; \
@@ -210,11 +179,10 @@ label##_pSeries: \
std r10,PACA_EXGEN+EX_R13(r13); \
std r11,PACA_EXGEN+EX_R11(r13); \
std r12,PACA_EXGEN+EX_R12(r13); \
- clrrdi r12,r13,32; /* get high part of &label */ \
- mfmsr r10; \
+ ld r12,PACAKBASE(r13); /* get high part of &label */ \
+ ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \
mfspr r11,SPRN_SRR0; /* save SRR0 */ \
LOAD_HANDLER(r12,label##_common) \
- ori r10,r10,MSR_IR|MSR_DR|MSR_RI; \
mtspr SPRN_SRR0,r12; \
mfspr r12,SPRN_SRR1; /* and SRR1 */ \
mtspr SPRN_SRR1,r10; \