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Subject[PATCH v6 05/33] objtool: arm64: Decode other system instructions
Date
Decode ERET, BRK and NOPs

Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
---
tools/objtool/arch/arm64/decode.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/tools/objtool/arch/arm64/decode.c b/tools/objtool/arch/arm64/decode.c
index 40ada17d0842..19840862f3aa 100644
--- a/tools/objtool/arch/arm64/decode.c
+++ b/tools/objtool/arch/arm64/decode.c
@@ -231,6 +231,14 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
/* Remaining branch opcodes are conditional */
*type = INSN_JUMP_CONDITIONAL;
*immediate = aarch64_get_branch_offset(insn);
+ } else if (aarch64_insn_is_eret(insn)) {
+ *type = INSN_CONTEXT_SWITCH;
+ } else if (aarch64_insn_is_hint(insn) ||
+ aarch64_insn_is_barrier(insn)) {
+ *type = INSN_NOP;
+ } else if (aarch64_insn_is_brk(insn)) {
+ *type = INSN_BUG;
+ *immediate = aarch64_insn_decode_immediate(AARCH64_INSN_IMM_16, insn);
}
break;
default:
--
2.17.1
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