diff options
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index dfbce527c98e..4390f8d72126 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -37,10 +37,10 @@ #include <linux/smp.h> #include <linux/console.h> #include <linux/kmsg_dump.h> +#include <linux/debugfs.h> #include <asm/emulated_ops.h> #include <linux/uaccess.h> -#include <asm/debugfs.h> #include <asm/interrupt.h> #include <asm/io.h> #include <asm/machdep.h> @@ -171,7 +171,6 @@ extern void panic_flush_kmsg_start(void) extern void panic_flush_kmsg_end(void) { - printk_safe_flush_on_panic(); kmsg_dump(KMSG_DUMP_PANIC); bust_spinlocks(0); debug_locks_off(); @@ -428,7 +427,7 @@ void hv_nmi_check_nonrecoverable(struct pt_regs *regs) return; nonrecoverable: - regs_set_return_msr(regs, regs->msr & ~MSR_RI); + regs_set_unrecoverable(regs); #endif } DEFINE_INTERRUPT_HANDLER_NMI(system_reset_exception) @@ -498,7 +497,7 @@ out: die("Unrecoverable nested System Reset", regs, SIGABRT); #endif /* Must die if the interrupt is not recoverable */ - if (!(regs->msr & MSR_RI)) { + if (regs_is_unrecoverable(regs)) { /* For the reason explained in die_mce, nmi_exit before die */ nmi_exit(); die("Unrecoverable System Reset", regs, SIGABRT); @@ -550,7 +549,7 @@ static inline int check_io_access(struct pt_regs *regs) printk(KERN_DEBUG "%s bad port %lx at %p\n", (*nip & 0x100)? "OUT to": "IN from", regs->gpr[rb] - _IO_BASE, nip); - regs_set_return_msr(regs, regs->msr | MSR_RI); + regs_set_recoverable(regs); regs_set_return_ip(regs, extable_fixup(entry)); return 1; } @@ -562,7 +561,7 @@ static inline int check_io_access(struct pt_regs *regs) #ifdef CONFIG_PPC_ADV_DEBUG_REGS /* On 4xx, the reason for the machine check or program exception is in the ESR. */ -#define get_reason(regs) ((regs)->dsisr) +#define get_reason(regs) ((regs)->esr) #define REASON_FP ESR_FP #define REASON_ILLEGAL (ESR_PIL | ESR_PUO) #define REASON_PRIVILEGED ESR_PPR @@ -840,7 +839,7 @@ DEFINE_INTERRUPT_HANDLER_NMI(machine_check_exception) bail: /* Must die if the interrupt is not recoverable */ - if (!(regs->msr & MSR_RI)) + if (regs_is_unrecoverable(regs)) die_mce("Unrecoverable Machine check", regs, SIGBUS); #ifdef CONFIG_PPC_BOOK3S_64 @@ -1104,7 +1103,7 @@ DEFINE_INTERRUPT_HANDLER(RunModeException) _exception(SIGTRAP, regs, TRAP_UNK, 0); } -DEFINE_INTERRUPT_HANDLER(single_step_exception) +static void __single_step_exception(struct pt_regs *regs) { clear_single_step(regs); clear_br_trace(regs); @@ -1121,6 +1120,11 @@ DEFINE_INTERRUPT_HANDLER(single_step_exception) _exception(SIGTRAP, regs, TRAP_TRACE, regs->nip); } +DEFINE_INTERRUPT_HANDLER(single_step_exception) +{ + __single_step_exception(regs); +} + /* * After we have successfully emulated an instruction, we have to * check if the instruction was being single-stepped, and if so, @@ -1130,7 +1134,7 @@ DEFINE_INTERRUPT_HANDLER(single_step_exception) static void emulate_single_step(struct pt_regs *regs) { if (single_stepping(regs)) - single_step_exception(regs); + __single_step_exception(regs); } static inline int __parse_fpscr(unsigned long fpscr) @@ -1477,8 +1481,13 @@ static void do_program_check(struct pt_regs *regs) if (!(regs->msr & MSR_PR) && /* not user-mode */ report_bug(bugaddr, regs) == BUG_TRAP_TYPE_WARN) { - regs_add_return_ip(regs, 4); - return; + const struct exception_table_entry *entry; + + entry = search_exception_tables(bugaddr); + if (entry) { + regs_set_return_ip(regs, extable_fixup(entry) + regs->nip - bugaddr); + return; + } } _exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip); return; @@ -2267,7 +2276,7 @@ static int __init ppc_warn_emulated_init(void) struct ppc_emulated_entry *entries = (void *)&ppc_emulated; dir = debugfs_create_dir("emulated_instructions", - powerpc_debugfs_root); + arch_debugfs_dir); debugfs_create_u32("do_warn", 0644, dir, &ppc_warn_emulated); |