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

[Julien Thierry]

Decode ERET, BRK and NOPs

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

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;
                }
-- 
2.25.4