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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-01-30 14:08:19 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-02-08 14:02:09 +0100 |
| commit | 755d664174463791489dddf34c33308b61de68c3 (patch) | |
| tree | 2a7a39f2ba853818043fa35cfedb6f2250359ff9 | |
| parent | powerpc: do_break get registers from regs (diff) | |
| download | linux-755d664174463791489dddf34c33308b61de68c3.tar.xz linux-755d664174463791489dddf34c33308b61de68c3.zip | |
powerpc: DebugException remove args
Like other interrupt handler conversions, switch to getting registers
from the pt_regs argument.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-10-npiggin@gmail.com
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_40x.S | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 4 |
4 files changed, 6 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 43e71d86dcbf..1a7291daadfd 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -791,7 +791,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) EXCEPTION_COMMON_CRIT(0xd00) std r14,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD - mr r4,r14 ld r14,PACA_EXCRIT+EX_R14(r13) ld r15,PACA_EXCRIT+EX_R15(r13) bl save_nvgprs @@ -864,7 +863,6 @@ kernel_dbg_exc: INTS_DISABLE std r14,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD - mr r4,r14 ld r14,PACA_EXDBG+EX_R14(r13) ld r15,PACA_EXDBG+EX_R15(r13) bl save_nvgprs diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S index 3c5577ac4dc8..24724a7dad49 100644 --- a/arch/powerpc/kernel/head_40x.S +++ b/arch/powerpc/kernel/head_40x.S @@ -476,6 +476,7 @@ _ENTRY(saved_ksp_limit) /* continue normal handling for a critical exception... */ 2: mfspr r4,SPRN_DBSR + stw r4,_ESR(r11) /* DebugException takes DBSR in _ESR */ addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_TEMPLATE(DebugException, 0x2002, \ (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \ diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index 0fbdacc7fab7..bf33af714d11 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -406,6 +406,7 @@ label: \ /* continue normal handling for a debug exception... */ \ 2: mfspr r4,SPRN_DBSR; \ + stw r4,_ESR(r11); /* DebugException takes DBSR in _ESR */\ addi r3,r1,STACK_FRAME_OVERHEAD; \ EXC_XFER_TEMPLATE(DebugException, 0x2008, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), debug_transfer_to_handler, ret_from_debug_exc) @@ -459,6 +460,7 @@ label: \ /* continue normal handling for a critical exception... */ \ 2: mfspr r4,SPRN_DBSR; \ + stw r4,_ESR(r11); /* DebugException takes DBSR in _ESR */\ addi r3,r1,STACK_FRAME_OVERHEAD; \ EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), crit_transfer_to_handler, ret_from_crit_exc) diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 1c77b1a8f7c9..dfb0d3325f4b 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -1957,8 +1957,10 @@ static void handle_debug(struct pt_regs *regs, unsigned long debug_status) mtspr(SPRN_DBCR0, current->thread.debug.dbcr0); } -void DebugException(struct pt_regs *regs, unsigned long debug_status) +void DebugException(struct pt_regs *regs) { + unsigned long debug_status = regs->dsisr; + current->thread.debug.dbsr = debug_status; /* Hack alert: On BookE, Branch Taken stops on the branch itself, while |