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| author | Paul Mundt <lethal@linux-sh.org> | 2007-03-08 19:41:21 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@hera.kernel.org> | 2007-05-07 02:10:53 +0000 |
| commit | fa69151173b1fc6fa3ced0edd5c2ea83b5d32bc1 (patch) | |
| tree | e7af97ccddc06d54dd6d6982a64cbf4982693379 /arch/sh/kernel/traps.c | |
| parent | 45ed285b54930767937deb0eaf718b1d08c3c475 (diff) | |
| download | linux-fa69151173b1fc6fa3ced0edd5c2ea83b5d32bc1.tar.bz2 | |
sh: generic BUG() support.
Wire up GENERIC_BUG for SH. This moves off of the special bug
frame and on to the generic struct bug_entry. Roughly the same
semantics are retained, and we can kill off some of the verbose
BUG() reporting code.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/traps.c')
| -rw-r--r-- | arch/sh/kernel/traps.c | 54 |
1 files changed, 20 insertions, 34 deletions
diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c index e9f168f60f95..77107838271f 100644 --- a/arch/sh/kernel/traps.c +++ b/arch/sh/kernel/traps.c @@ -18,6 +18,7 @@ #include <linux/module.h> #include <linux/kallsyms.h> #include <linux/io.h> +#include <linux/bug.h> #include <linux/debug_locks.h> #include <linux/limits.h> #include <asm/system.h> @@ -130,40 +131,6 @@ static int die_if_no_fixup(const char * str, struct pt_regs * regs, long err) return -EFAULT; } -#ifdef CONFIG_BUG -#ifdef CONFIG_DEBUG_BUGVERBOSE -static inline void do_bug_verbose(struct pt_regs *regs) -{ - struct bug_frame f; - long len; - - if (__copy_from_user(&f, (const void __user *)regs->pc, - sizeof(struct bug_frame))) - return; - - len = __strnlen_user(f.file, PATH_MAX) - 1; - if (unlikely(len < 0 || len >= PATH_MAX)) - f.file = "<bad filename>"; - len = __strnlen_user(f.func, PATH_MAX) - 1; - if (unlikely(len < 0 || len >= PATH_MAX)) - f.func = "<bad function>"; - - printk(KERN_ALERT "kernel BUG in %s() at %s:%d!\n", - f.func, f.file, f.line); -} -#else -static inline void do_bug_verbose(struct pt_regs *regs) -{ -} -#endif /* CONFIG_DEBUG_BUGVERBOSE */ - -void handle_BUG(struct pt_regs *regs) -{ - do_bug_verbose(regs); - die("Kernel BUG", regs, TRAPA_BUG_OPCODE & 0xff); -} -#endif /* CONFIG_BUG */ - /* * handle an instruction that does an unaligned memory access by emulating the * desired behaviour @@ -888,6 +855,25 @@ void __init trap_init(void) per_cpu_trap_init(); } +#ifdef CONFIG_BUG +void handle_BUG(struct pt_regs *regs) +{ + enum bug_trap_type tt; + tt = report_bug(regs->pc); + if (tt == BUG_TRAP_TYPE_WARN) { + regs->pc += 2; + return; + } + + die("Kernel BUG", regs, TRAPA_BUG_OPCODE & 0xff); +} + +int is_valid_bugaddr(unsigned long addr) +{ + return addr >= PAGE_OFFSET; +} +#endif + void show_trace(struct task_struct *tsk, unsigned long *sp, struct pt_regs *regs) { |