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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-01-30 23:08:18 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-02-09 00:02:09 +1100 |
| commit | 18722ecf9efdc6a7ca933a3e5a83cc9dba375847 (patch) | |
| tree | 970d7874ee29cca06580ca9508a36c2d9ba348c7 | |
| parent | b4ced8031000b832d845dd17994e0fa1b8310496 (diff) | |
| download | lwn-18722ecf9efdc6a7ca933a3e5a83cc9dba375847.tar.gz lwn-18722ecf9efdc6a7ca933a3e5a83cc9dba375847.zip | |
powerpc: do_break get registers from regs
Similar to the previous patch this makes interrupt handler function
types more regular so they can be wrapped with the next patch.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-9-npiggin@gmail.com
| -rw-r--r-- | arch/powerpc/include/asm/debug.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_8xx.S | 5 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 7 |
3 files changed, 6 insertions, 9 deletions
diff --git a/arch/powerpc/include/asm/debug.h b/arch/powerpc/include/asm/debug.h index ec57daf87f40..0550eceab3ca 100644 --- a/arch/powerpc/include/asm/debug.h +++ b/arch/powerpc/include/asm/debug.h @@ -52,8 +52,7 @@ extern void do_send_trap(struct pt_regs *regs, unsigned long address, unsigned long error_code, int brkpt); #else -extern void do_break(struct pt_regs *regs, unsigned long address, - unsigned long error_code); +void do_break(struct pt_regs *regs); #endif #endif /* _ASM_POWERPC_DEBUG_H */ diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 0b2c247cfdff..7869db974185 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -364,10 +364,9 @@ do_databreakpoint: addi r3,r1,STACK_FRAME_OVERHEAD mfspr r4,SPRN_BAR stw r4,_DAR(r11) -#ifdef CONFIG_VMAP_STACK - lwz r5,_DSISR(r11) -#else +#ifndef CONFIG_VMAP_STACK mfspr r5,SPRN_DSISR + stw r5,_DSISR(r11) #endif EXC_XFER_STD(0x1c00, do_break) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index a66f435dabbf..4f0f81e9420b 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -659,11 +659,10 @@ static void do_break_handler(struct pt_regs *regs) } } -void do_break (struct pt_regs *regs, unsigned long address, - unsigned long error_code) +void do_break(struct pt_regs *regs) { current->thread.trap_nr = TRAP_HWBKPT; - if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code, + if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, regs->dsisr, 11, SIGSEGV) == NOTIFY_STOP) return; @@ -681,7 +680,7 @@ void do_break (struct pt_regs *regs, unsigned long address, do_break_handler(regs); /* Deliver the signal to userspace */ - force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address); + force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)regs->dar); } #endif /* CONFIG_PPC_ADV_DEBUG_REGS */ |