diff options
author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-23 23:08:43 +0200 |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-23 23:08:43 +0200 |
commit | d7a4b414eed51f1653bb05ebe84122bf9a7ae18b (patch) | |
tree | bd6603a0c27de4c138a1767871897e9cd3e1a1d2 /arch/sh/kernel/traps.c | |
parent | 1f0ab40976460bc4673fa204ce917a725185d8f2 (diff) | |
parent | a724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff) |
Merge commit 'linus/master' into tracing/kprobes
Conflicts:
kernel/trace/Makefile
kernel/trace/trace.h
kernel/trace/trace_event_types.h
kernel/trace/trace_export.c
Merge reason:
Sync with latest significant tracing core changes.
Diffstat (limited to 'arch/sh/kernel/traps.c')
-rw-r--r-- | arch/sh/kernel/traps.c | 45 |
1 files changed, 41 insertions, 4 deletions
diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c index b3e0067db35..a8396f36bd1 100644 --- a/arch/sh/kernel/traps.c +++ b/arch/sh/kernel/traps.c @@ -5,18 +5,33 @@ #include <linux/signal.h> #include <linux/sched.h> #include <linux/uaccess.h> +#include <linux/hardirq.h> +#include <asm/unwinder.h> #include <asm/system.h> #ifdef CONFIG_BUG -static void handle_BUG(struct pt_regs *regs) +void handle_BUG(struct pt_regs *regs) { + const struct bug_entry *bug; + unsigned long bugaddr = regs->pc; enum bug_trap_type tt; - tt = report_bug(regs->pc, regs); + + if (!is_valid_bugaddr(bugaddr)) + goto invalid; + + bug = find_bug(bugaddr); + + /* Switch unwinders when unwind_stack() is called */ + if (bug->flags & BUGFLAG_UNWINDER) + unwinder_faulted = 1; + + tt = report_bug(bugaddr, regs); if (tt == BUG_TRAP_TYPE_WARN) { - regs->pc += instruction_size(regs->pc); + regs->pc += instruction_size(bugaddr); return; } +invalid: die("Kernel BUG", regs, TRAPA_BUG_OPCODE & 0xff); } @@ -28,8 +43,10 @@ int is_valid_bugaddr(unsigned long addr) return 0; if (probe_kernel_address((insn_size_t *)addr, opcode)) return 0; + if (opcode == TRAPA_BUG_OPCODE) + return 1; - return opcode == TRAPA_BUG_OPCODE; + return 0; } #endif @@ -75,3 +92,23 @@ BUILD_TRAP_HANDLER(bug) force_sig(SIGTRAP, current); } + +BUILD_TRAP_HANDLER(nmi) +{ + TRAP_HANDLER_DECL; + + nmi_enter(); + + switch (notify_die(DIE_NMI, "NMI", regs, 0, vec & 0xff, SIGINT)) { + case NOTIFY_OK: + case NOTIFY_STOP: + break; + case NOTIFY_BAD: + die("Fatal Non-Maskable Interrupt", regs, SIGINT); + default: + printk(KERN_ALERT "Got NMI, but nobody cared. Ignoring...\n"); + break; + } + + nmi_exit(); +} |