[PATCH v5 05/33] objtool: arm64: Decode other system instructions
From: Chen Zhongjin <hidden>
Date: 2022-06-22 15:53:02
Also in:
linux-arch, linux-arm-kernel, linux-kbuild, live-patching, lkml
Subsystem:
objtool, the rest · Maintainers:
Josh Poimboeuf, Peter Zijlstra, Linus Torvalds
Decode ERET, BRK and NOPs Signed-off-by: Julien Thierry <redacted> Signed-off-by: Chen Zhongjin <redacted> --- 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