diff mbox series

[RFC,07/17] objtool: arm64: Decode other system instructions

Message ID 20210120173800.1660730-8-jthierry@redhat.com
State New
Headers show
Series objtool: add base support for arm64 | expand

Commit Message

Julien Thierry Jan. 20, 2021, 5:37 p.m. UTC 
Decode ERET, BRK and NOPs

Signed-off-by: Julien Thierry <jthierry@redhat.com>
---
 tools/objtool/arch/arm64/decode.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/tools/objtool/arch/arm64/decode.c b/tools/objtool/arch/arm64/decode.c
index 924121b4b466..a4a587c400a1 100644
--- a/tools/objtool/arch/arm64/decode.c
+++ b/tools/objtool/arch/arm64/decode.c
@@ -223,6 +223,13 @@  int arch_decode_instruction(const struct elf *elf, 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_steppable_hint(insn)) {
+			*type = INSN_NOP;
+		} else if (aarch64_insn_is_brk(insn)) {
+			*immediate = aarch64_insn_decode_immediate(AARCH64_INSN_IMM_16, insn);
+			*type = INSN_BUG;
 		} else {
 			*type = INSN_OTHER;
 		}