mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-15 23:25:07 +00:00
Code Issues Releases Wiki Activity

powerpc/64s/exception: Expand EXCEPTION_PROLOG_COMMON_1 and 2 into caller

Browse source 
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/20190802105709.27696-32-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2019-08-02 20:56:56 +10:00 committed by Michael Ellerman
parent 5d5e0edfd5
commit 8c9fb5d4f3
1 changed files with 40 additions and 45 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

85
arch/powerpc/kernel/exceptions-64s.S
View file

@ -390,49 +390,6 @@ END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
.endm
#endif
#define EXCEPTION_PROLOG_COMMON_1() \
std r9,_CCR(r1); /* save CR in stackframe */ \
std r11,_NIP(r1); /* save SRR0 in stackframe */ \
std r12,_MSR(r1); /* save SRR1 in stackframe */ \
std r10,0(r1); /* make stack chain pointer */ \
std r0,GPR0(r1); /* save r0 in stackframe */ \
std r10,GPR1(r1); /* save r1 in stackframe */ \
/* Save original regs values from save area to stack frame. */
#define EXCEPTION_PROLOG_COMMON_2(area, trap) \
ld r9,area+EX_R9(r13); /* move r9, r10 to stackframe */ \
ld r10,area+EX_R10(r13); \
std r9,GPR9(r1); \
std r10,GPR10(r1); \
ld r9,area+EX_R11(r13); /* move r11 - r13 to stackframe */ \
ld r10,area+EX_R12(r13); \
ld r11,area+EX_R13(r13); \
std r9,GPR11(r1); \
std r10,GPR12(r1); \
std r11,GPR13(r1); \
BEGIN_FTR_SECTION_NESTED(66); \
ld r10,area+EX_CFAR(r13); \
std r10,ORIG_GPR3(r1); \
END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \
GET_CTR(r10, area); \
std r10,_CTR(r1); \
std r2,GPR2(r1); /* save r2 in stackframe */ \
SAVE_4GPRS(3, r1); /* save r3 - r6 in stackframe */ \
SAVE_2GPRS(7, r1); /* save r7, r8 in stackframe */ \
mflr r9; /* Get LR, later save to stack */ \
ld r2,PACATOC(r13); /* get kernel TOC into r2 */ \
std r9,_LINK(r1); \
lbz r10,PACAIRQSOFTMASK(r13); \
mfspr r11,SPRN_XER; /* save XER in stackframe */ \
std r10,SOFTE(r1); \
std r11,_XER(r1); \
li r9,(trap)+1; \
std r9,_TRAP(r1); /* set trap number */ \
li r10,0; \
ld r11,exception_marker@toc(r2); \
std r10,RESULT(r1); /* clear regs->result */ \
std r11,STACK_FRAME_OVERHEAD-16(r1); /* mark the frame */
/*
* 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
@ -452,7 +409,13 @@ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \
EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0
3:
.endif
EXCEPTION_PROLOG_COMMON_1()
std r9,_CCR(r1) /* save CR in stackframe */
std r11,_NIP(r1) /* save SRR0 in stackframe */
std r12,_MSR(r1) /* save SRR1 in stackframe */
std r10,0(r1) /* make stack chain pointer */
std r0,GPR0(r1) /* save r0 in stackframe */
std r10,GPR1(r1) /* save r1 in stackframe */
.if \stack
.if \kaup
@ -468,7 +431,39 @@ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \
.endif
.endif
EXCEPTION_PROLOG_COMMON_2(\area, \vec)
/* Save original regs values from save area to stack frame. */
ld r9,\area+EX_R9(r13) /* move r9, r10 to stackframe */
ld r10,\area+EX_R10(r13)
std r9,GPR9(r1)
std r10,GPR10(r1)
ld r9,\area+EX_R11(r13) /* move r11 - r13 to stackframe */
ld r10,\area+EX_R12(r13)
ld r11,\area+EX_R13(r13)
std r9,GPR11(r1)
std r10,GPR12(r1)
std r11,GPR13(r1)
BEGIN_FTR_SECTION_NESTED(66)
ld r10,\area+EX_CFAR(r13)
std r10,ORIG_GPR3(r1)
END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66)
GET_CTR(r10, \area)
std r10,_CTR(r1)
std r2,GPR2(r1) /* save r2 in stackframe */
SAVE_4GPRS(3, r1) /* save r3 - r6 in stackframe */
SAVE_2GPRS(7, r1) /* save r7, r8 in stackframe */
mflr r9 /* Get LR, later save to stack */
ld r2,PACATOC(r13) /* get kernel TOC into r2 */
std r9,_LINK(r1)
lbz r10,PACAIRQSOFTMASK(r13)
mfspr r11,SPRN_XER /* save XER in stackframe */
std r10,SOFTE(r1)
std r11,_XER(r1)
li r9,(\vec)+1
std r9,_TRAP(r1) /* set trap number */
li r10,0
ld r11,exception_marker@toc(r2)
std r10,RESULT(r1) /* clear regs->result */
std r11,STACK_FRAME_OVERHEAD-16(r1) /* mark the frame */
.if \stack
ACCOUNT_STOLEN_TIME