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| author | Kumar Gala <galak@kernel.crashing.org> | 2007-02-06 22:55:19 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2007-02-06 22:55:19 -0600 |
| commit | 8209003547c4b1006943eac8dc6c1fb6493cafda (patch) | |
| tree | 37ed5742527d448f211c575fe714fe68846e0c40 /include/asm-powerpc | |
| parent | 8423200553113cc031caa9b147f6150a8e26545c (diff) | |
| download | kernel-crypto-8209003547c4b1006943eac8dc6c1fb6493cafda.tar.gz kernel-crypto-8209003547c4b1006943eac8dc6c1fb6493cafda.tar.xz kernel-crypto-8209003547c4b1006943eac8dc6c1fb6493cafda.zip | |
[POWERPC] Added kprobes support to ppc32
Added kprobes to ppc32 platforms that have use single_step_exception. This
excludes 4xx and anything Book-E since their debug mechanisms for single stepping
are completely different.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/kprobes.h | 7 | ||||
| -rw-r--r-- | include/asm-powerpc/sstep.h | 1 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h index 2dafa376a63..3a5dd492588 100644 --- a/include/asm-powerpc/kprobes.h +++ b/include/asm-powerpc/kprobes.h @@ -44,6 +44,7 @@ typedef unsigned int kprobe_opcode_t; #define IS_TDI(instr) (((instr) & 0xfc000000) == 0x08000000) #define IS_TWI(instr) (((instr) & 0xfc000000) == 0x0c000000) +#ifdef CONFIG_PPC64 /* * 64bit powerpc uses function descriptors. * Handle cases where: @@ -67,9 +68,13 @@ typedef unsigned int kprobe_opcode_t; } #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)((func_descr_t *)pentry) - #define is_trap(instr) (IS_TW(instr) || IS_TD(instr) || \ IS_TWI(instr) || IS_TDI(instr)) +#else +/* Use stock kprobe_lookup_name since ppc32 doesn't use function descriptors */ +#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)(pentry) +#define is_trap(instr) (IS_TW(instr) || IS_TWI(instr)) +#endif #define ARCH_SUPPORTS_KRETPROBES #define ARCH_INACTIVE_KPROBE_COUNT 1 diff --git a/include/asm-powerpc/sstep.h b/include/asm-powerpc/sstep.h index 630a9889c07..f593b0f9b62 100644 --- a/include/asm-powerpc/sstep.h +++ b/include/asm-powerpc/sstep.h @@ -21,6 +21,7 @@ struct pt_regs; */ #define IS_MTMSRD(instr) (((instr) & 0xfc0007be) == 0x7c000124) #define IS_RFID(instr) (((instr) & 0xfc0007fe) == 0x4c000024) +#define IS_RFI(instr) (((instr) & 0xfc0007fe) == 0x4c000064) /* Emulate instructions that cause a transfer of control. */ extern int emulate_step(struct pt_regs *regs, unsigned int instr); |