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| author |   Nicholas Piggin <npiggin@gmail.com> | 2019-08-02 20:56:55 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 11:14:58 +1000 |
| commit | 5d5e0edfd5fa2a60d0f9b8d6ece1a5ce51aae3b5 (patch) | |
| tree | 2bd378c9cff278844f99104739e441572434543d /arch/powerpc/kernel/exceptions-64s.S | |
| parent | powerpc/64s/exception: Add INT_COMMON gas macro to generate common exception code (diff) | |
| download | linux-dev-5d5e0edfd5fa2a60d0f9b8d6ece1a5ce51aae3b5.tar.xz linux-dev-5d5e0edfd5fa2a60d0f9b8d6ece1a5ce51aae3b5.zip | |
powerpc/64s/exception: Expand EXCEPTION_COMMON macro into caller
No generated code change except BUG line number constants.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-31-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 7829a6ad99aa..492786604b10 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -437,41 +437,41 @@ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \ * On entry r13 points to the paca, r9-r13 are saved in the paca, * r9 contains the saved CR, r11 and r12 contain the saved SRR0 and * SRR1, and relocation is on. + * + * If stack=0, then the stack is already set in r1, and r1 is saved in r10. + * PPR save and CPU accounting is not done for the !stack case (XXX why not?) */ -#define EXCEPTION_COMMON(area, trap) \ - andi. r10,r12,MSR_PR; /* See if coming from user */ \ - mr r10,r1; /* Save r1 */ \ - subi r1,r1,INT_FRAME_SIZE; /* alloc frame on kernel stack */ \ - beq- 1f; \ - ld r1,PACAKSAVE(r13); /* kernel stack to use */ \ -1: tdgei r1,-INT_FRAME_SIZE; /* trap if r1 is in userspace */ \ - EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0; \ -3: EXCEPTION_PROLOG_COMMON_1(); \ - kuap_save_amr_and_lock r9, r10, cr1, cr0; \ - beq 4f; /* if from kernel mode */ \ - ACCOUNT_CPU_USER_ENTRY(r13, r9, r10); \ - SAVE_PPR(area, r9); \ -4: EXCEPTION_PROLOG_COMMON_2(area, trap); \ - ACCOUNT_STOLEN_TIME - -/* - * Exception where stack is already set in r1, r1 is saved in r10. - * PPR save and CPU accounting is not done (for some reason). - */ -#define EXCEPTION_COMMON_STACK(area, trap) \ - EXCEPTION_PROLOG_COMMON_1(); \ - 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 + andi. r10,r12,MSR_PR /* See if coming from user */ + mr r10,r1 /* Save r1 */ + subi r1,r1,INT_FRAME_SIZE /* alloc frame on kernel stack */ + beq- 1f + ld r1,PACAKSAVE(r13) /* kernel stack to use */ +1: tdgei r1,-INT_FRAME_SIZE /* trap if r1 is in userspace */ + EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0 +3: + .endif EXCEPTION_PROLOG_COMMON_1() + + .if \stack + .if \kaup + kuap_save_amr_and_lock r9, r10, cr1, cr0 + .endif + beq 4f /* if from kernel mode */ + ACCOUNT_CPU_USER_ENTRY(r13, r9, r10) + SAVE_PPR(\area, r9) +4: + .else .if \kaup kuap_save_amr_and_lock r9, r10, cr1 .endif + .endif + EXCEPTION_PROLOG_COMMON_2(\area, \vec) + + .if \stack + ACCOUNT_STOLEN_TIME .endif .endm |