Messages in this thread Patch in this message |  | | | Date | Mon, 7 Aug 2006 17:30:24 +0530 | | From | Ananth N Mavinakayanahalli <> | | Subject | [PATCH 2/3] Kprobes: Define retval helper |
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From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Add the KPROBE_RETVAL macro to help extract the return value on different architectures, while using function-return probes. --- Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Prasanna S.P <prasanna@in.ibm.com>
--- include/asm-i386/kprobes.h | 2 ++ include/asm-ia64/kprobes.h | 2 ++ include/asm-powerpc/kprobes.h | 2 ++ include/asm-x86_64/kprobes.h | 2 ++ 4 files changed, 8 insertions(+) Index: linux-2.6.18-rc3/include/asm-i386/kprobes.h =================================================================== --- linux-2.6.18-rc3.orig/include/asm-i386/kprobes.h +++ linux-2.6.18-rc3/include/asm-i386/kprobes.h @@ -46,6 +46,8 @@ typedef u8 kprobe_opcode_t; #define ARCH_SUPPORTS_KRETPROBES #define ARCH_INACTIVE_KPROBE_COUNT 0 +#define KPROBE_RETVAL(regs) regs->eax + void arch_remove_kprobe(struct kprobe *p); void kretprobe_trampoline(void); Index: linux-2.6.18-rc3/include/asm-ia64/kprobes.h =================================================================== --- linux-2.6.18-rc3.orig/include/asm-ia64/kprobes.h +++ linux-2.6.18-rc3/include/asm-ia64/kprobes.h @@ -84,6 +84,8 @@ struct kprobe_ctlblk { #define ARCH_SUPPORTS_KRETPROBES #define ARCH_INACTIVE_KPROBE_COUNT 1 +#define KPROBE_RETVAL(regs) regs->r8 + #define SLOT0_OPCODE_SHIFT (37) #define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) #define SLOT2_OPCODE_SHIFT (37) Index: linux-2.6.18-rc3/include/asm-powerpc/kprobes.h =================================================================== --- linux-2.6.18-rc3.orig/include/asm-powerpc/kprobes.h +++ linux-2.6.18-rc3/include/asm-powerpc/kprobes.h @@ -54,6 +54,8 @@ typedef unsigned int kprobe_opcode_t; #define ARCH_SUPPORTS_KRETPROBES #define ARCH_INACTIVE_KPROBE_COUNT 1 +#define KPROBE_RETVAL(regs) regs->gpr[3] + void kretprobe_trampoline(void); extern void arch_remove_kprobe(struct kprobe *p); Index: linux-2.6.18-rc3/include/asm-x86_64/kprobes.h =================================================================== --- linux-2.6.18-rc3.orig/include/asm-x86_64/kprobes.h +++ linux-2.6.18-rc3/include/asm-x86_64/kprobes.h @@ -45,6 +45,8 @@ typedef u8 kprobe_opcode_t; #define ARCH_SUPPORTS_KRETPROBES #define ARCH_INACTIVE_KPROBE_COUNT 1 +#define KPROBE_RETVAL(regs) regs->rax + void kretprobe_trampoline(void); extern void arch_remove_kprobe(struct kprobe *p); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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