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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 08:18:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 08:18:43 -0700 |
| commit | 12dce6263d43daeb4e16fa4eb964c1c99fa4fa2e (patch) | |
| tree | e70a514e5fec67be191e12eba508db8ced967a4b /include/asm-mips/stacktrace.h | |
| parent | 3f2e05e90e0846c42626e3d272454f26be34a1bc (diff) | |
| parent | 04b314b2c3732bb5aa752fdbb3076de16decdab6 (diff) | |
| download | kernel-crypto-12dce6263d43daeb4e16fa4eb964c1c99fa4fa2e.tar.gz kernel-crypto-12dce6263d43daeb4e16fa4eb964c1c99fa4fa2e.tar.xz kernel-crypto-12dce6263d43daeb4e16fa4eb964c1c99fa4fa2e.zip | |
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Remove unused galileo-boars header files
[MIPS] Rename SERIAL_PORT_DEFNS for EV64120
[MIPS] Add UART IRQ number for EV64120
[MIPS] Remove excite_flash.c
[MIPS] Update i8259 resources.
[MIPS] Make unwind_stack() can dig into interrupted context
[MIPS] Stacktrace build-fix and improvement
[MIPS] QEMU: Add support for little endian mips
[MIPS] Remove __flush_icache_page
[MIPS] lockdep: update defconfigs
[MIPS] lockdep: Add STACKTRACE_SUPPORT and enable LOCKDEP_SUPPORT
[MIPS] lockdep: fix TRACE_IRQFLAGS_SUPPORT
Diffstat (limited to 'include/asm-mips/stacktrace.h')
| -rw-r--r-- | include/asm-mips/stacktrace.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-mips/stacktrace.h b/include/asm-mips/stacktrace.h new file mode 100644 index 00000000000..07f873351a8 --- /dev/null +++ b/include/asm-mips/stacktrace.h @@ -0,0 +1,44 @@ +#ifndef _ASM_STACKTRACE_H +#define _ASM_STACKTRACE_H + +#include <asm/ptrace.h> + +#ifdef CONFIG_KALLSYMS +extern int raw_show_trace; +extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, + unsigned long pc, unsigned long *ra); +#else +#define raw_show_trace 1 +#define unwind_stack(task, sp, pc, ra) 0 +#endif + +static __always_inline void prepare_frametrace(struct pt_regs *regs) +{ +#ifndef CONFIG_KALLSYMS + /* + * Remove any garbage that may be in regs (specially func + * addresses) to avoid show_raw_backtrace() to report them + */ + memset(regs, 0, sizeof(*regs)); +#endif + __asm__ __volatile__( + ".set push\n\t" + ".set noat\n\t" +#ifdef CONFIG_64BIT + "1: dla $1, 1b\n\t" + "sd $1, %0\n\t" + "sd $29, %1\n\t" + "sd $31, %2\n\t" +#else + "1: la $1, 1b\n\t" + "sw $1, %0\n\t" + "sw $29, %1\n\t" + "sw $31, %2\n\t" +#endif + ".set pop\n\t" + : "=m" (regs->cp0_epc), + "=m" (regs->regs[29]), "=m" (regs->regs[31]) + : : "memory"); +} + +#endif /* _ASM_STACKTRACE_H */ |