diff options
| author | Jason Wessel <jason.wessel@windriver.com> | 2008-07-29 20:58:53 (GMT) |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-30 20:54:42 (GMT) |
| commit | 8854700115ecf8aa6f087aa915b7b6cf18090d39 (patch) | |
| tree | 3338d7aed80d715e0576783e0fecf30cc507a9a7 /include/asm-mips | |
| parent | 8d60a903d986ffa26c41f0092320a3b9da20bfaf (diff) | |
| download | linux-8854700115ecf8aa6f087aa915b7b6cf18090d39.tar.xz | |
[MIPS] kgdb: add arch support for the kernel's kgdb core
The new kgdb architecture specific handler registers and unregisters
dynamically for exceptions depending on when you configure a kgdb I/O
driver.
Aside from initializing the exceptions earlier in the boot process,
kgdb should have no impact on a device when it is compiled in so long
as an I/O module is not configured for use.
There have been quite a number of contributors during the existence of
this patch (see arch/mips/kernel/kgdb.c). Most recently Jason
re-wrote the mips kgdb logic to use the die notification handlers.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips')
| -rw-r--r-- | include/asm-mips/kdebug.h | 14 | ||||
| -rw-r--r-- | include/asm-mips/kgdb.h | 44 |
2 files changed, 57 insertions, 1 deletions
diff --git a/include/asm-mips/kdebug.h b/include/asm-mips/kdebug.h index 6ece1b0..5bf62aa 100644 --- a/include/asm-mips/kdebug.h +++ b/include/asm-mips/kdebug.h @@ -1 +1,13 @@ -#include <asm-generic/kdebug.h> +#ifndef _ASM_MIPS_KDEBUG_H +#define _ASM_MIPS_KDEBUG_H + +#include <linux/notifier.h> + +enum die_val { + DIE_OOPS = 1, + DIE_FP, + DIE_TRAP, + DIE_RI, +}; + +#endif /* _ASM_MIPS_KDEBUG_H */ diff --git a/include/asm-mips/kgdb.h b/include/asm-mips/kgdb.h new file mode 100644 index 0000000..48223b0 --- /dev/null +++ b/include/asm-mips/kgdb.h @@ -0,0 +1,44 @@ +#ifndef __ASM_KGDB_H_ +#define __ASM_KGDB_H_ + +#ifdef __KERNEL__ + +#include <asm/sgidefs.h> + +#if (_MIPS_ISA == _MIPS_ISA_MIPS1) || (_MIPS_ISA == _MIPS_ISA_MIPS2) || \ + (_MIPS_ISA == _MIPS_ISA_MIPS32) + +#define KGDB_GDB_REG_SIZE 32 + +#elif (_MIPS_ISA == _MIPS_ISA_MIPS3) || (_MIPS_ISA == _MIPS_ISA_MIPS4) || \ + (_MIPS_ISA == _MIPS_ISA_MIPS64) + +#ifdef CONFIG_32BIT +#define KGDB_GDB_REG_SIZE 32 +#else /* CONFIG_CPU_32BIT */ +#define KGDB_GDB_REG_SIZE 64 +#endif +#else +#error "Need to set KGDB_GDB_REG_SIZE for MIPS ISA" +#endif /* _MIPS_ISA */ + +#define BUFMAX 2048 +#if (KGDB_GDB_REG_SIZE == 32) +#define NUMREGBYTES (90*sizeof(u32)) +#define NUMCRITREGBYTES (12*sizeof(u32)) +#else +#define NUMREGBYTES (90*sizeof(u64)) +#define NUMCRITREGBYTES (12*sizeof(u64)) +#endif +#define BREAK_INSTR_SIZE 4 +#define CACHE_FLUSH_IS_SAFE 0 + +extern void arch_kgdb_breakpoint(void); +extern int kgdb_early_setup; +extern void *saved_vectors[32]; +extern void handle_exception(struct pt_regs *regs); +extern void breakinst(void); + +#endif /* __KERNEL__ */ + +#endif /* __ASM_KGDB_H_ */ |