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powerpc/64s/exception: consolidate EXCEPTION_PROLOG_2 with _NORI variant

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Switch to a gas macro that conditionally expands the RI clearing
instruction.

No generated code change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin
2019-06-22 23:15:12 +10:00
committed by Michael Ellerman
parent 4508a74a63
commit bd7b6d1334
2 changed files with 17 additions and 38 deletions
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43
arch/powerpc/include/asm/exception-64s.h
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@@ -323,32 +323,11 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define EXCEPTION_PROLOG_1(area, extra, vec) \
_EXCEPTION_PROLOG_1(area, extra, vec)
.macro EXCEPTION_PROLOG_2 label, hsrr
ld r10,PACAKMSR(r13) /* get MSR value for kernel */
.if \hsrr
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
.else
mfspr r11,SPRN_SRR0 /* save SRR0 */
.endif
LOAD_HANDLER(r12,\label\())
.if \hsrr
mtspr SPRN_HSRR0,r12
mfspr r12,SPRN_HSRR1 /* and HSRR1 */
mtspr SPRN_HSRR1,r10
HRFI_TO_KERNEL
.else
mtspr SPRN_SRR0,r12
mfspr r12,SPRN_SRR1 /* and SRR1 */
mtspr SPRN_SRR1,r10
RFI_TO_KERNEL
.endif
b . /* prevent speculative execution */
.endm
/* _NORI variant keeps MSR_RI clear */
.macro EXCEPTION_PROLOG_2_NORI label, hsrr
.macro EXCEPTION_PROLOG_2 label, hsrr, set_ri
ld r10,PACAKMSR(r13) /* get MSR value for kernel */
.if ! \set_ri
xori r10,r10,MSR_RI /* Clear MSR_RI */
.endif
.if \hsrr
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
.else
@@ -373,7 +352,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(area); \
EXCEPTION_PROLOG_1(area, extra, vec); \
EXCEPTION_PROLOG_2 label, h
EXCEPTION_PROLOG_2 label, h, 1
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/*
@@ -442,7 +421,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define EXCEPTION_PROLOG_NORI(area, label, h, extra, vec) \
EXCEPTION_PROLOG_0(area); \
EXCEPTION_PROLOG_1(area, extra, vec); \
EXCEPTION_PROLOG_2_NORI label, h
EXCEPTION_PROLOG_2 label, h, 0
#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
.macro KVMTEST hsrr, n
@@ -599,14 +578,14 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define STD_EXCEPTION_OOL(vec, label) \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec); \
EXCEPTION_PROLOG_2 label, EXC_STD
EXCEPTION_PROLOG_2 label, EXC_STD, 1
#define STD_EXCEPTION_HV(loc, vec, label) \
EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_HV, KVMTEST_HV, vec)
#define STD_EXCEPTION_HV_OOL(vec, label) \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec); \
EXCEPTION_PROLOG_2 label, EXC_HV
EXCEPTION_PROLOG_2 label, EXC_HV, 1
#define STD_RELON_EXCEPTION(loc, vec, label) \
/* No guest interrupts come through here */ \
@@ -670,21 +649,21 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(PACA_EXGEN); \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask); \
EXCEPTION_PROLOG_2 label, h
EXCEPTION_PROLOG_2 label, h, 1
#define MASKABLE_EXCEPTION(vec, label, bitmask) \
__MASKABLE_EXCEPTION(vec, label, EXC_STD, SOFTEN_TEST_PR, bitmask)
#define MASKABLE_EXCEPTION_OOL(vec, label, bitmask) \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec, bitmask);\
EXCEPTION_PROLOG_2 label, EXC_STD
EXCEPTION_PROLOG_2 label, EXC_STD, 1
#define MASKABLE_EXCEPTION_HV(vec, label, bitmask) \
__MASKABLE_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask)
#define MASKABLE_EXCEPTION_HV_OOL(vec, label, bitmask) \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\
EXCEPTION_PROLOG_2 label, EXC_HV
EXCEPTION_PROLOG_2 label, EXC_HV, 1
#define __MASKABLE_RELON_EXCEPTION(vec, label, h, extra, bitmask) \
SET_SCRATCH0(r13); /* save r13 */ \
@@ -697,7 +676,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define MASKABLE_RELON_EXCEPTION_OOL(vec, label, bitmask) \
MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_PR, vec, bitmask);\
EXCEPTION_PROLOG_2 label, EXC_STD
EXCEPTION_PROLOG_2 label, EXC_STD, 1
#define MASKABLE_RELON_EXCEPTION_HV(vec, label, bitmask) \
__MASKABLE_RELON_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask)