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authorJiri Kosina <jkosina@suse.cz>2022-03-23 09:58:40 +0100
committerJiri Kosina <jkosina@suse.cz>2022-03-23 09:58:40 +0100
commitb690490d6d466972ade172ee2e7f6ffa49e7e910 (patch)
tree50a93da28c9128e19eb7a3038aecf75dab6b36e1 /tools/objtool/arch/x86/decode.c
parentf97ec5d75e9261a5da78dc28a8955b7cc0c4468b (diff)
parent0f203948230720e849ad50d158adac1cd32c282f (diff)
Merge branch 'for-5.18/amd-sfh' into for-linus
- dead code elimination (Christophe JAILLET)
Diffstat (limited to 'tools/objtool/arch/x86/decode.c')
-rw-r--r--tools/objtool/arch/x86/decode.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index 4d6d7fc13255..c10ef78df050 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -531,6 +531,11 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
}
break;
+ case 0xcc:
+ /* int3 */
+ *type = INSN_TRAP;
+ break;
+
case 0xe3:
/* jecxz/jrcxz */
*type = INSN_JUMP_CONDITIONAL;
@@ -697,10 +702,10 @@ const char *arch_ret_insn(int len)
{
static const char ret[5][5] = {
{ BYTE_RET },
- { BYTE_RET, BYTES_NOP1 },
- { BYTE_RET, BYTES_NOP2 },
- { BYTE_RET, BYTES_NOP3 },
- { BYTE_RET, BYTES_NOP4 },
+ { BYTE_RET, 0xcc },
+ { BYTE_RET, 0xcc, BYTES_NOP1 },
+ { BYTE_RET, 0xcc, BYTES_NOP2 },
+ { BYTE_RET, 0xcc, BYTES_NOP3 },
};
if (len < 1 || len > 5) {