From cd2675bf65455a45b54228b7acc0c6a26a164cb6 Mon Sep 17 00:00:00 2001 From: Anil S Keshavamurthy Date: Thu, 23 Jun 2005 00:09:29 -0700 Subject: [PATCH] Kprobes/IA64: support kprobe on branch/call instructions This patch is required to support kprobe on branch/call instructions. Signed-off-by: Anil S Keshavamurthy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-ia64/kprobes.h | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'include/asm-ia64') diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h index fec3506e53f8..d30af77a0b11 100644 --- a/include/asm-ia64/kprobes.h +++ b/include/asm-ia64/kprobes.h @@ -44,6 +44,17 @@ typedef struct _bundle { #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry +#define SLOT0_OPCODE_SHIFT (37) +#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) +#define SLOT2_OPCODE_SHIFT (37) + +#define INDIRECT_CALL_OPCODE (1) +#define IP_RELATIVE_CALL_OPCODE (5) +#define IP_RELATIVE_BRANCH_OPCODE (4) +#define IP_RELATIVE_PREDICT_OPCODE (7) +#define LONG_BRANCH_OPCODE (0xC) +#define LONG_CALL_OPCODE (0xD) + typedef struct kprobe_opcode { bundle_t bundle; } kprobe_opcode_t; @@ -55,8 +66,12 @@ struct fnptr { /* Architecture specific copy of original instruction*/ struct arch_specific_insn { - /* copy of the original instruction */ + /* copy of the instruction to be emulated */ kprobe_opcode_t insn; + #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1 + #define INST_FLAG_FIX_BRANCH_REG 2 + unsigned long inst_flag; + unsigned short target_br_reg; }; /* ia64 does not need this */ -- cgit v1.2.3