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Wed, 03 Mar 2021 09:09:48 -0800 (PST) X-Google-Smtp-Source: ABdhPJymKaluuUCFes6NHXOE2N47/QKR9U3zwNzo7E6dxQ5WJmOp4zuKApsjHT396I53VvTpkEr8TQ== X-Received: by 2002:adf:ef4c:: with SMTP id c12mr28585953wrp.112.1614791388102; Wed, 03 Mar 2021 09:09:48 -0800 (PST) Received: from redfedo.redhat.com ([2a01:cb14:499:3d00:cd47:f651:9d80:157a]) by smtp.gmail.com with ESMTPSA id r7sm33066226wre.25.2021.03.03.09.09.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Mar 2021 09:09:47 -0800 (PST) From: Julien Thierry To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, ardb@kernel.org, masahiroy@kernel.org, jpoimboe@redhat.com, peterz@infradead.org, ycote@redhat.com, Julien Thierry Subject: [RFC PATCH v2 07/13] objtool: arm64: Decode other system instructions Date: Wed, 3 Mar 2021 18:09:26 +0100 Message-Id: <20210303170932.1838634-8-jthierry@redhat.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20210303170932.1838634-1-jthierry@redhat.com> References: <20210303170932.1838634-1-jthierry@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jthierry@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Decode ERET, BRK and NOPs Signed-off-by: Julien Thierry --- 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 983f16b8b2af..3008dcbb5e64 100644 --- a/tools/objtool/arch/arm64/decode.c +++ b/tools/objtool/arch/arm64/decode.c @@ -233,6 +233,13 @@ 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; }