[PATCH] objtool: fix build

From: Jiri Slaby
Date: Mon Dec 05 2016 - 07:42:30 EST


0x8d opcode was handled twice. Fixed.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
tools/objtool/arch/x86/decode.c | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index ca4ede5ddd8c..6011ccbf9384 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -291,6 +291,20 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
break;
}

+ if (insn.rex_prefix.nbytes &&
+ insn.rex_prefix.bytes[0] == 0x48 &&
+ insn.modrm.nbytes && insn.modrm.bytes[0] == 0x2c &&
+ insn.sib.nbytes && insn.sib.bytes[0] == 0x24) {
+ /* lea %(rsp), %rbp */
+ *type = INSN_STACK;
+ op->dest.type = OP_DEST_REG;
+ op->dest.reg = CFI_BP;
+ op->src.type = OP_SRC_ADD;
+ op->src.reg = CFI_SP;
+ op->src.offset = 0;
+ break;
+ }
+
if (insn.rex_prefix.nbytes && insn.modrm.nbytes &&
insn.sib.nbytes && insn.rex_prefix.bytes[0] == 0x4c &&
insn.modrm.bytes[0] == 0x54 && insn.sib.bytes[0] == 0x24 &&
@@ -342,15 +356,6 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
op->src.type = OP_SRC_POP;
break;

- case 0x8d:
- if (insn.rex_prefix.nbytes &&
- insn.rex_prefix.bytes[0] == 0x48 &&
- insn.modrm.nbytes && insn.modrm.bytes[0] == 0x2c &&
- insn.sib.nbytes && insn.sib.bytes[0] == 0x24)
- /* lea %(rsp), %rbp */
- *type = INSN_FP_SETUP;
- break;
-
case 0x90:
*type = INSN_NOP;
break;
--
2.11.0