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[POWERPC] Split out iSeries specific exception macros

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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell
2007-08-22 13:48:37 +10:00
committed by Paul Mackerras
parent dc8f571a26
commit 7180e3e636
3 changed files with 78 additions and 66 deletions
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71
include/asm-powerpc/exception.h
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@@ -62,6 +62,16 @@
ori reg,reg,(label)@l; /* virt addr of handler ... */
#endif
#define EXCEPTION_PROLOG_1(area) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
std r9,area+EX_R9(r13); /* save r9 - r12 */ \
std r10,area+EX_R10(r13); \
std r11,area+EX_R11(r13); \
std r12,area+EX_R12(r13); \
mfspr r9,SPRN_SPRG1; \
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
@@ -70,14 +80,7 @@
* This firmware bug is present on POWER4 and JS20.
*/
#define EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(area, label) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
std r9,area+EX_R9(r13); /* save r9 - r12 */ \
std r10,area+EX_R10(r13); \
std r11,area+EX_R11(r13); \
std r12,area+EX_R12(r13); \
mfspr r9,SPRN_SPRG1; \
std r9,area+EX_R13(r13); \
mfcr r9; \
EXCEPTION_PROLOG_1(area); \
clrrdi r12,r13,32; /* get high part of &label */ \
mfmsr r10; \
/* force 64bit mode */ \
@@ -94,14 +97,7 @@
b . /* prevent speculative execution */
#define EXCEPTION_PROLOG_PSERIES(area, label) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
std r9,area+EX_R9(r13); /* save r9 - r12 */ \
std r10,area+EX_R10(r13); \
std r11,area+EX_R11(r13); \
std r12,area+EX_R12(r13); \
mfspr r9,SPRN_SPRG1; \
std r9,area+EX_R13(r13); \
mfcr r9; \
EXCEPTION_PROLOG_1(area); \
clrrdi r12,r13,32; /* get high part of &label */ \
mfmsr r10; \
mfspr r11,SPRN_SRR0; /* save SRR0 */ \
@@ -113,28 +109,6 @@
rfid; \
b . /* prevent speculative execution */
/*
* This is the start of the interrupt handlers for iSeries
* This code runs with relocation on.
*/
#define EXCEPTION_PROLOG_ISERIES_1(area) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
std r9,area+EX_R9(r13); /* save r9 - r12 */ \
std r10,area+EX_R10(r13); \
std r11,area+EX_R11(r13); \
std r12,area+EX_R12(r13); \
mfspr r9,SPRN_SPRG1; \
std r9,area+EX_R13(r13); \
mfcr r9
#define EXCEPTION_PROLOG_ISERIES_2 \
mfmsr r10; \
ld r12,PACALPPACAPTR(r13); \
ld r11,LPPACASRR0(r12); \
ld r12,LPPACASRR1(r12); \
ori r10,r10,MSR_RI; \
mtmsrd r10,1
/*
* The common exception prolog is used for all except a few exceptions
* such as a segment miss on a kernel address. We have to be prepared
@@ -247,27 +221,6 @@ label##_pSeries: \
rfid; \
b . /* prevent speculative execution */
#define STD_EXCEPTION_ISERIES(n, label, area) \
.globl label##_iSeries; \
label##_iSeries: \
HMT_MEDIUM; \
mtspr SPRN_SPRG1,r13; /* save r13 */ \
EXCEPTION_PROLOG_ISERIES_1(area); \
EXCEPTION_PROLOG_ISERIES_2; \
b label##_common
#define MASKABLE_EXCEPTION_ISERIES(n, label) \
.globl label##_iSeries; \
label##_iSeries: \
HMT_MEDIUM; \
mtspr SPRN_SPRG1,r13; /* save r13 */ \
EXCEPTION_PROLOG_ISERIES_1(PACA_EXGEN); \
lbz r10,PACASOFTIRQEN(r13); \
cmpwi 0,r10,0; \
beq- label##_iSeries_masked; \
EXCEPTION_PROLOG_ISERIES_2; \
b label##_common; \
#ifdef CONFIG_PPC_ISERIES
#define DISABLE_INTS \
li r11,0; \