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| author | Jon Medhurst <tixy@yxit.co.uk> | 2011-06-09 15:05:51 +0200 |
|---|---|---|
| committer | Tixy <tixy@medhuaa1.miniserver.com> | 2011-07-13 19:32:42 +0200 |
| commit | e2960317d4581689bf80dbad4d75e7a59f11a3f7 (patch) | |
| tree | 1a80fc69624bd87d1e2393c3a67ce15dc1c17daf /arch/arm/include | |
| parent | ARM: kprobes: Add hooks to override singlestep() (diff) | |
| download | linux-e2960317d4581689bf80dbad4d75e7a59f11a3f7.tar.xz linux-e2960317d4581689bf80dbad4d75e7a59f11a3f7.zip | |
ARM: kprobes: Extend arch_specific_insn to add pointer to emulated instruction
When we come to emulating Thumb instructions then, to interwork
correctly, the code on in the instruction slot must be invoked with a
function pointer which has the least significant bit set. Rather that
set this by hand in every Thumb emulation function we will add a new
field for this purpose to arch_specific_insn, called insn_fn.
This also enables us to seamlessly share emulation functions between ARM
and Thumb code.
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/kprobes.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kprobes.h b/arch/arm/include/asm/kprobes.h index 1e9ff56d40c7..feec86768f9c 100644 --- a/arch/arm/include/asm/kprobes.h +++ b/arch/arm/include/asm/kprobes.h @@ -34,6 +34,7 @@ struct kprobe; typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *); typedef unsigned long (kprobe_check_cc)(unsigned long); typedef void (kprobe_insn_singlestep_t)(struct kprobe *, struct pt_regs *); +typedef void (kprobe_insn_fn_t)(void); /* Architecture specific copy of original instruction. */ struct arch_specific_insn { @@ -41,6 +42,7 @@ struct arch_specific_insn { kprobe_insn_handler_t *insn_handler; kprobe_check_cc *insn_check_cc; kprobe_insn_singlestep_t *insn_singlestep; + kprobe_insn_fn_t *insn_fn; }; struct prev_kprobe { |