[PATCH 13/18] powerpc/64s/exception: Add INT_COMMON gas macro to generate common exception code
Nicholas Piggin
npiggin at gmail.com
Tue Jul 30 00:12:42 AEST 2019
No generated code change except BUG line number constants.
Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
arch/powerpc/kernel/exceptions-64s.S | 52 +++++++++++++++++-----------
1 file changed, 32 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 565b9c18aa0c..3d5ded748de6 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -463,6 +463,18 @@ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \
kuap_save_amr_and_lock r9, r10, cr1; \
EXCEPTION_PROLOG_COMMON_2(area, trap)
+.macro INT_COMMON vec, area, stack, kaup
+ .if \stack
+ EXCEPTION_COMMON(\area, \vec)
+ .else
+ EXCEPTION_PROLOG_COMMON_1()
+ .if \kaup
+ kuap_save_amr_and_lock r9, r10, cr1
+ .endif
+ EXCEPTION_PROLOG_COMMON_2(\area, \vec)
+ .endif
+.endm
+
/*
* Restore all registers including H/SRR0/1 saved in a stack frame of a
* standard exception.
@@ -658,7 +670,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP)
#define EXC_COMMON(name, realvec, hdlr) \
EXC_COMMON_BEGIN(name); \
- EXCEPTION_COMMON(PACA_EXGEN, realvec); \
+ INT_COMMON realvec, PACA_EXGEN, 1, 1 ; \
bl save_nvgprs; \
RECONCILE_IRQ_STATE(r10, r11); \
addi r3,r1,STACK_FRAME_OVERHEAD; \
@@ -671,7 +683,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP)
*/
#define EXC_COMMON_ASYNC(name, realvec, hdlr) \
EXC_COMMON_BEGIN(name); \
- EXCEPTION_COMMON(PACA_EXGEN, realvec); \
+ INT_COMMON realvec, PACA_EXGEN, 1, 1 ; \
FINISH_NAP; \
RECONCILE_IRQ_STATE(r10, r11); \
RUNLATCH_ON; \
@@ -852,7 +864,7 @@ EXC_COMMON_BEGIN(system_reset_common)
mr r10,r1
ld r1,PACA_NMI_EMERG_SP(r13)
subi r1,r1,INT_FRAME_SIZE
- EXCEPTION_COMMON_STACK(PACA_EXNMI, 0x100)
+ INT_COMMON 0x100, PACA_EXNMI, 0, 1
bl save_nvgprs
/*
* Set IRQS_ALL_DISABLED unconditionally so arch_irqs_disabled does
@@ -962,9 +974,8 @@ EXC_COMMON_BEGIN(machine_check_early_common)
bgt cr1,unrecoverable_mce /* Check if we hit limit of 4 */
subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */
- EXCEPTION_PROLOG_COMMON_1()
/* We don't touch AMR here, we never go to virtual mode */
- EXCEPTION_PROLOG_COMMON_2(PACA_EXMC, 0x200)
+ INT_COMMON 0x200, PACA_EXMC, 0, 0
ld r3,PACA_EXMC+EX_DAR(r13)
lwz r4,PACA_EXMC+EX_DSISR(r13)
@@ -1064,7 +1075,7 @@ EXC_COMMON_BEGIN(machine_check_common)
* Machine check is different because we use a different
* save area: PACA_EXMC instead of PACA_EXGEN.
*/
- EXCEPTION_COMMON(PACA_EXMC, 0x200)
+ INT_COMMON 0x200, PACA_EXMC, 1, 1
FINISH_NAP
RECONCILE_IRQ_STATE(r10, r11)
ld r3,PACA_EXMC+EX_DAR(r13)
@@ -1156,7 +1167,7 @@ EXC_COMMON_BEGIN(data_access_common)
* r9 - r13 are saved in paca->exgen.
* EX_DAR and EX_DSISR have saved DAR/DSISR
*/
- EXCEPTION_COMMON(PACA_EXGEN, 0x300)
+ INT_COMMON 0x300, PACA_EXGEN, 1, 1
RECONCILE_IRQ_STATE(r10, r11)
ld r12,_MSR(r1)
ld r3,PACA_EXGEN+EX_DAR(r13)
@@ -1179,7 +1190,7 @@ EXC_VIRT_BEGIN(data_access_slb, 0x4380, 0x80)
EXC_VIRT_END(data_access_slb, 0x4380, 0x80)
INT_KVM_HANDLER 0x380, EXC_STD, PACA_EXSLB, 1
EXC_COMMON_BEGIN(data_access_slb_common)
- EXCEPTION_COMMON(PACA_EXSLB, 0x380)
+ INT_COMMON 0x380, PACA_EXSLB, 1, 1
ld r4,PACA_EXSLB+EX_DAR(r13)
std r4,_DAR(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
@@ -1212,7 +1223,7 @@ EXC_VIRT_BEGIN(instruction_access, 0x4400, 0x80)
EXC_VIRT_END(instruction_access, 0x4400, 0x80)
INT_KVM_HANDLER 0x400, EXC_STD, PACA_EXGEN, 0
EXC_COMMON_BEGIN(instruction_access_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0x400)
+ INT_COMMON 0x400, PACA_EXGEN, 1, 1
RECONCILE_IRQ_STATE(r10, r11)
ld r12,_MSR(r1)
ld r3,_NIP(r1)
@@ -1235,7 +1246,7 @@ EXC_VIRT_BEGIN(instruction_access_slb, 0x4480, 0x80)
EXC_VIRT_END(instruction_access_slb, 0x4480, 0x80)
INT_KVM_HANDLER 0x480, EXC_STD, PACA_EXSLB, 0
EXC_COMMON_BEGIN(instruction_access_slb_common)
- EXCEPTION_COMMON(PACA_EXSLB, 0x480)
+ INT_COMMON 0x480, PACA_EXSLB, 1, 1
ld r4,_NIP(r1)
addi r3,r1,STACK_FRAME_OVERHEAD
BEGIN_MMU_FTR_SECTION
@@ -1277,7 +1288,7 @@ EXC_VIRT_BEGIN(alignment, 0x4600, 0x100)
EXC_VIRT_END(alignment, 0x4600, 0x100)
INT_KVM_HANDLER 0x600, EXC_STD, PACA_EXGEN, 0
EXC_COMMON_BEGIN(alignment_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0x600)
+ INT_COMMON 0x600, PACA_EXGEN, 1, 1
ld r3,PACA_EXGEN+EX_DAR(r13)
lwz r4,PACA_EXGEN+EX_DSISR(r13)
std r3,_DAR(r1)
@@ -1323,7 +1334,7 @@ EXC_COMMON_BEGIN(program_check_common)
subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */
b 3f /* Jump into the macro !! */
2:
- EXCEPTION_COMMON(PACA_EXGEN, 0x700)
+ INT_COMMON 0x700, PACA_EXGEN, 1, 1
bl save_nvgprs
RECONCILE_IRQ_STATE(r10, r11)
addi r3,r1,STACK_FRAME_OVERHEAD
@@ -1339,7 +1350,7 @@ EXC_VIRT_BEGIN(fp_unavailable, 0x4800, 0x100)
EXC_VIRT_END(fp_unavailable, 0x4800, 0x100)
INT_KVM_HANDLER 0x800, EXC_STD, PACA_EXGEN, 0
EXC_COMMON_BEGIN(fp_unavailable_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0x800)
+ INT_COMMON 0x800, PACA_EXGEN, 1, 1
bne 1f /* if from user, just load it up */
bl save_nvgprs
RECONCILE_IRQ_STATE(r10, r11)
@@ -1556,7 +1567,7 @@ EXC_VIRT_BEGIN(h_data_storage, 0x4e00, 0x20)
EXC_VIRT_END(h_data_storage, 0x4e00, 0x20)
INT_KVM_HANDLER 0xe00, EXC_HV, PACA_EXGEN, 1
EXC_COMMON_BEGIN(h_data_storage_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0xe00)
+ INT_COMMON 0xe00, PACA_EXGEN, 1, 1
bl save_nvgprs
RECONCILE_IRQ_STATE(r10, r11)
addi r3,r1,STACK_FRAME_OVERHEAD
@@ -1610,9 +1621,10 @@ EXC_COMMON_BEGIN(hmi_exception_early_common)
mr r10,r1 /* Save r1 */
ld r1,PACAEMERGSP(r13) /* Use emergency stack for realmode */
subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */
- EXCEPTION_PROLOG_COMMON_1()
+
/* We don't touch AMR here, we never go to virtual mode */
- EXCEPTION_PROLOG_COMMON_2(PACA_EXGEN, 0xe60)
+ INT_COMMON 0xe60, PACA_EXGEN, 0, 0
+
addi r3,r1,STACK_FRAME_OVERHEAD
bl hmi_exception_realmode
cmpdi cr0,r3,0
@@ -1630,7 +1642,7 @@ EXC_COMMON_BEGIN(hmi_exception_early_common)
INT_HANDLER hmi_exception, 0xe60, 0, 0, 0, EXC_HV, PACA_EXGEN, 1, 0, 0, IRQS_DISABLED, 1
EXC_COMMON_BEGIN(hmi_exception_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0xe60)
+ INT_COMMON 0xe60, PACA_EXGEN, 1, 1
FINISH_NAP
bl save_nvgprs
RECONCILE_IRQ_STATE(r10, r11)
@@ -1688,7 +1700,7 @@ EXC_VIRT_BEGIN(altivec_unavailable, 0x4f20, 0x20)
EXC_VIRT_END(altivec_unavailable, 0x4f20, 0x20)
INT_KVM_HANDLER 0xf20, EXC_STD, PACA_EXGEN, 0
EXC_COMMON_BEGIN(altivec_unavailable_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0xf20)
+ INT_COMMON 0xf20, PACA_EXGEN, 1, 1
#ifdef CONFIG_ALTIVEC
BEGIN_FTR_SECTION
beq 1f
@@ -1729,7 +1741,7 @@ EXC_VIRT_BEGIN(vsx_unavailable, 0x4f40, 0x20)
EXC_VIRT_END(vsx_unavailable, 0x4f40, 0x20)
INT_KVM_HANDLER 0xf40, EXC_STD, PACA_EXGEN, 0
EXC_COMMON_BEGIN(vsx_unavailable_common)
- EXCEPTION_COMMON(PACA_EXGEN, 0xf40)
+ INT_COMMON 0xf40, PACA_EXGEN, 1, 1
#ifdef CONFIG_VSX
BEGIN_FTR_SECTION
beq 1f
@@ -1980,7 +1992,7 @@ EXC_COMMON_BEGIN(soft_nmi_common)
mr r10,r1
ld r1,PACAEMERGSP(r13)
subi r1,r1,INT_FRAME_SIZE
- EXCEPTION_COMMON_STACK(PACA_EXGEN, 0x900)
+ INT_COMMON 0x900, PACA_EXGEN, 0, 1
bl save_nvgprs
RECONCILE_IRQ_STATE(r10, r11)
addi r3,r1,STACK_FRAME_OVERHEAD
--
2.22.0
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