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powerpc/64e: Get dear offset with _DEAR macro

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Use _DEAR to get the offset of dear register in pr_regs for 64e cpus.

Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210807010239.416055-5-sxwjean@me.com
This commit is contained in:
Xiongwei Song 2021-08-07 09:02:39 +08:00 committed by Michael Ellerman
parent 4872cbd0ca
commit d9db6e4202
2 changed files with 7 additions and 14 deletions
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13
arch/powerpc/kernel/asm-offsets.c
View file

@ -286,23 +286,16 @@ int main(void)
STACK_PT_REGS_OFFSET(_CCR, ccr);
STACK_PT_REGS_OFFSET(_XER, xer);
STACK_PT_REGS_OFFSET(_DAR, dar);
STACK_PT_REGS_OFFSET(_DEAR, dear);
STACK_PT_REGS_OFFSET(_DSISR, dsisr);
STACK_PT_REGS_OFFSET(_ESR, esr);
STACK_PT_REGS_OFFSET(ORIG_GPR3, orig_gpr3);
STACK_PT_REGS_OFFSET(RESULT, result);
STACK_PT_REGS_OFFSET(_TRAP, trap);
#ifndef CONFIG_PPC64
/*
* The PowerPC 400-class & Book-E processors have neither the DAR
* nor the DSISR SPRs. Hence, we overload them to hold the similar
* DEAR and ESR SPRs for such processors. For critical interrupts
* we use them to hold SRR0 and SRR1.
*/
STACK_PT_REGS_OFFSET(_DEAR, dar);
#else /* CONFIG_PPC64 */
#ifdef CONFIG_PPC64
STACK_PT_REGS_OFFSET(SOFTE, softe);
STACK_PT_REGS_OFFSET(_PPR, ppr);
#endif /* CONFIG_PPC64 */
#endif
#ifdef CONFIG_PPC_PKEY
STACK_PT_REGS_OFFSET(STACK_REGS_AMR, amr);

8
arch/powerpc/kernel/exceptions-64e.S
View file

@ -545,7 +545,7 @@ __end_interrupts:
PROLOG_ADDITION_2REGS)
mfspr r14,SPRN_DEAR
mfspr r15,SPRN_ESR
std r14,_DAR(r1)
std r14,_DEAR(r1)
std r15,_ESR(r1)
ld r14,PACA_EXGEN+EX_R14(r13)
ld r15,PACA_EXGEN+EX_R15(r13)
@ -558,7 +558,7 @@ __end_interrupts:
PROLOG_ADDITION_2REGS)
li r15,0
mr r14,r10
std r14,_DAR(r1)
std r14,_DEAR(r1)
std r15,_ESR(r1)
ld r14,PACA_EXGEN+EX_R14(r13)
ld r15,PACA_EXGEN+EX_R15(r13)
@ -575,7 +575,7 @@ __end_interrupts:
PROLOG_ADDITION_2REGS)
mfspr r14,SPRN_DEAR
mfspr r15,SPRN_ESR
std r14,_DAR(r1)
std r14,_DEAR(r1)
std r15,_ESR(r1)
ld r14,PACA_EXGEN+EX_R14(r13)
ld r15,PACA_EXGEN+EX_R15(r13)
@ -1057,7 +1057,7 @@ bad_stack_book3e:
std r11,_CCR(r1)
mfspr r10,SPRN_DEAR
mfspr r11,SPRN_ESR
std r10,_DAR(r1)
std r10,_DEAR(r1)
std r11,_ESR(r1)
std r0,GPR0(r1); /* save r0 in stackframe */ \
std r2,GPR2(r1); /* save r2 in stackframe */ \