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