[PATCH v6 18/39] powerpc: DebugException remove args
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2021-01-15 17:37:45
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Like other interrupt handler conversions, switch to getting registers from the pt_regs argument. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/kernel/exceptions-64e.S | 2 -- arch/powerpc/kernel/head_40x.S | 1 + arch/powerpc/kernel/head_booke.h | 2 ++ 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 52421042a020..003999c7836c 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 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) \ /* 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 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) \ /* 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 1af52a4bce1f..6691774fe1fb 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c@@ -2000,8 +2000,10 @@ 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
--
2.23.0