From: Chen Zhongjin <chenzhongjin@huawei.com>
To: <linux-kernel@vger.kernel.org>, <linux-arch@vger.kernel.org>,
<linuxppc-dev@lists.ozlabs.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kbuild@vger.kernel.org>, <live-patching@vger.kernel.org>
Cc: <jpoimboe@kernel.org>, <peterz@infradead.org>,
<catalin.marinas@arm.com>, <will@kernel.org>,
<masahiroy@kernel.org>, <michal.lkml@markovi.net>,
<ndesaulniers@google.com>, <mark.rutland@arm.com>,
<pasha.tatashin@soleen.com>, <broonie@kernel.org>,
<chenzhongjin@huawei.com>, <rmk+kernel@armlinux.org.uk>,
<madvenka@linux.microsoft.com>, <christophe.leroy@csgroup.eu>,
<daniel.thompson@linaro.org>
Subject: [PATCH v6 04/33] objtool: arm64: Decode jump and call related instructions
Date: Thu, 23 Jun 2022 09:48:48 +0800 [thread overview]
Message-ID: <20220623014917.199563-5-chenzhongjin@huawei.com> (raw)
In-Reply-To: <20220623014917.199563-1-chenzhongjin@huawei.com>
Decode branch, branch and link (aarch64's call) and return instructions.
Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
---
tools/objtool/arch/arm64/decode.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/tools/objtool/arch/arm64/decode.c b/tools/objtool/arch/arm64/decode.c
index d8c32703874d..40ada17d0842 100644
--- a/tools/objtool/arch/arm64/decode.c
+++ b/tools/objtool/arch/arm64/decode.c
@@ -212,6 +212,27 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
}
}
break;
+ case AARCH64_INSN_CLS_BR_SYS:
+ if (aarch64_insn_is_ret(insn) &&
+ aarch64_insn_decode_register(AARCH64_INSN_REGTYPE_RN, insn)
+ == AARCH64_INSN_REG_LR) {
+ *type = INSN_RETURN;
+ } else if (aarch64_insn_is_bl(insn)) {
+ *type = INSN_CALL;
+ *immediate = aarch64_get_branch_offset(insn);
+ } else if (aarch64_insn_is_blr(insn)) {
+ *type = INSN_CALL_DYNAMIC;
+ } else if (aarch64_insn_is_b(insn)) {
+ *type = INSN_JUMP_UNCONDITIONAL;
+ *immediate = aarch64_get_branch_offset(insn);
+ } else if (aarch64_insn_is_br(insn)) {
+ *type = INSN_JUMP_DYNAMIC;
+ } else if (aarch64_insn_is_branch_imm(insn)) {
+ /* Remaining branch opcodes are conditional */
+ *type = INSN_JUMP_CONDITIONAL;
+ *immediate = aarch64_get_branch_offset(insn);
+ }
+ break;
default:
break;
}
--
2.17.1
next prev parent reply other threads:[~2022-06-23 1:52 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-23 1:48 [PATCH v5 00/33] objtool: add base support for arm64 Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 01/33] tools: arm64: Make aarch64 instruction decoder available to tools Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 02/33] objtool: arm64: Add base definition for arm64 backend Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 03/33] objtool: arm64: Decode add/sub instructions Chen Zhongjin
2022-06-23 1:48 ` Chen Zhongjin [this message]
2022-06-23 1:48 ` [PATCH v6 05/33] objtool: arm64: Decode other system instructions Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 06/33] objtool: arm64: Decode load/store instructions Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 07/33] objtool: arm64: Decode LDR instructions Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 08/33] objtool: arm64: Accept non-instruction data in code sections Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 09/33] objtool: check: Support data in text section Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 10/33] objtool: arm64: Handle supported relocations in alternatives Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 11/33] objtool: arm64: Ignore replacement section for alternative callback Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 12/33] objtool: arm64: Enable stack validation for arm64 Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 13/33] objtool: arm64: Enable ORC " Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 14/33] objtool: arm64: Add annotate_reachable() for objtools Chen Zhongjin
2022-06-23 1:48 ` [PATCH v6 15/33] arm64: bug: Add reachable annotation to warning macros Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 16/33] arm64: kgdb: Add reachable annotation after kgdb brk Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 17/33] objtool: arm64: Add unwind_hint support Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 18/33] arm64: Change symbol type annotations Chen Zhongjin
2022-06-29 17:47 ` Mark Brown
2022-06-30 2:41 ` Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 19/33] arm64: Annotate unwind_hint for symbols with empty stack Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 20/33] arm64: entry: Annotate unwind_hint for entry Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 21/33] arm64: kvm: Annotate unwind_hint for hyp entry Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 22/33] arm64: efi-header: Mark efi header as data Chen Zhongjin
2022-06-29 18:03 ` Mark Brown
2022-06-23 1:49 ` [PATCH v6 23/33] arm64: head: Mark constants " Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 24/33] arm64: proc: Mark constant " Chen Zhongjin
2022-06-29 18:06 ` Mark Brown
2022-06-23 1:49 ` [PATCH v6 25/33] arm64: crypto: " Chen Zhongjin
2022-06-29 18:20 ` Mark Brown
2022-06-23 1:49 ` [PATCH v6 26/33] arm64: crypto: Remove unnecessary stackframe Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 27/33] arm64: Set intra-function call annotations Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 28/33] arm64: sleep: Properly set frame pointer before call Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 29/33] arm64: compat: Move VDSO code to .rodata section Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 30/33] arm64: entry: Align stack size for alternative Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 31/33] arm64: kernel: Skip validation of proton-pack.c Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 32/33] arm64: irq-gic: Replace unreachable() with -EINVAL Chen Zhongjin
2022-06-23 8:13 ` Marc Zyngier
2022-06-24 1:24 ` Chen Zhongjin
2022-06-23 1:49 ` [PATCH v6 33/33] objtool: revert c_file fallthrough detection for arm64 Chen Zhongjin
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