From: madvenka@linux.microsoft.com
To: jpoimboe@redhat.com, peterz@infradead.org,
chenzhongjin@huawei.com, mark.rutland@arm.com,
broonie@kernel.org, nobuta.keiya@fujitsu.com,
sjitindarsingh@gmail.com, catalin.marinas@arm.com,
will@kernel.org, jamorris@linux.microsoft.com,
linux-arm-kernel@lists.infradead.org,
live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
madvenka@linux.microsoft.com
Subject: [RFC PATCH v3 09/22] objtool: arm64: Add basic definitions and compile
Date: Thu, 2 Feb 2023 01:40:23 -0600 [thread overview]
Message-ID: <20230202074036.507249-10-madvenka@linux.microsoft.com> (raw)
In-Reply-To: <20230202074036.507249-1-madvenka@linux.microsoft.com>
From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>
Add CFI definitions and Endianness for ARM64.
Add DYNAMIC_CHECK option for ARM64.
Provide stubs for arch_decode_instructions() and check() just to get
Objtool to build on ARM64.
Signed-off-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
---
tools/objtool/Build | 1 +
tools/objtool/Makefile | 6 +++++-
tools/objtool/arch/arm64/Build | 1 +
tools/objtool/arch/arm64/decode.c | 21 +++++++++++++++++++
.../arch/arm64/include/arch/cfi_regs.h | 13 ++++++++++++
.../arch/arm64/include/arch/endianness.h | 9 ++++++++
tools/objtool/dcheck.c | 16 ++++++++++++++
7 files changed, 66 insertions(+), 1 deletion(-)
create mode 100644 tools/objtool/arch/arm64/Build
create mode 100644 tools/objtool/arch/arm64/decode.c
create mode 100644 tools/objtool/arch/arm64/include/arch/cfi_regs.h
create mode 100644 tools/objtool/arch/arm64/include/arch/endianness.h
create mode 100644 tools/objtool/dcheck.c
diff --git a/tools/objtool/Build b/tools/objtool/Build
index 974290dc4aac..fb0846b7d95e 100644
--- a/tools/objtool/Build
+++ b/tools/objtool/Build
@@ -4,6 +4,7 @@ objtool-y += weak.o
objtool-$(STATIC_CHECK) += check.o
objtool-$(STATIC_CHECK) += special.o
+objtool-$(DYNAMIC_CHECK) += dcheck.o
objtool-y += builtin-check.o
objtool-y += cfi.o
objtool-y += insn.o
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index 797d1ea02db0..92583b82eb78 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -46,7 +46,11 @@ ifeq ($(SRCARCH),x86)
STATIC_CHECK := y
endif
-export BUILD_ORC STATIC_CHECK
+ifeq ($(SRCARCH),arm64)
+ DYNAMIC_CHECK := y
+endif
+
+export BUILD_ORC STATIC_CHECK DYNAMIC_CHECK
export srctree OUTPUT CFLAGS SRCARCH AWK
include $(srctree)/tools/build/Makefile.include
diff --git a/tools/objtool/arch/arm64/Build b/tools/objtool/arch/arm64/Build
new file mode 100644
index 000000000000..3ff1f00c6a47
--- /dev/null
+++ b/tools/objtool/arch/arm64/Build
@@ -0,0 +1 @@
+objtool-y += decode.o
diff --git a/tools/objtool/arch/arm64/decode.c b/tools/objtool/arch/arm64/decode.c
new file mode 100644
index 000000000000..69f851337537
--- /dev/null
+++ b/tools/objtool/arch/arm64/decode.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Author: Madhavan T. Venkataraman (madvenka@linux.microsoft.com)
+ *
+ * Copyright (C) 2022 Microsoft Corporation
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <objtool/check.h>
+
+int arch_decode_instruction(struct objtool_file *file,
+ const struct section *sec,
+ unsigned long offset, unsigned int maxlen,
+ unsigned int *len, enum insn_type *type,
+ unsigned long *immediate,
+ struct list_head *ops_list)
+{
+ return 0;
+}
diff --git a/tools/objtool/arch/arm64/include/arch/cfi_regs.h b/tools/objtool/arch/arm64/include/arch/cfi_regs.h
new file mode 100644
index 000000000000..cff3b04d7248
--- /dev/null
+++ b/tools/objtool/arch/arm64/include/arch/cfi_regs.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _OBJTOOL_CFI_REGS_H
+#define _OBJTOOL_CFI_REGS_H
+
+#define CFI_FP 29
+#define CFI_BP CFI_FP
+#define CFI_RA 30
+#define CFI_SP 31
+
+#define CFI_NUM_REGS 32
+
+#endif /* _OBJTOOL_CFI_REGS_H */
diff --git a/tools/objtool/arch/arm64/include/arch/endianness.h b/tools/objtool/arch/arm64/include/arch/endianness.h
new file mode 100644
index 000000000000..7c362527da20
--- /dev/null
+++ b/tools/objtool/arch/arm64/include/arch/endianness.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _ARCH_ENDIANNESS_H
+#define _ARCH_ENDIANNESS_H
+
+#include <endian.h>
+
+#define __TARGET_BYTE_ORDER __LITTLE_ENDIAN
+
+#endif /* _ARCH_ENDIANNESS_H */
diff --git a/tools/objtool/dcheck.c b/tools/objtool/dcheck.c
new file mode 100644
index 000000000000..e2098c9ad282
--- /dev/null
+++ b/tools/objtool/dcheck.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <sys/mman.h>
+
+#include <objtool/objtool.h>
+
+int check(struct objtool_file *file)
+{
+ return 0;
+}
--
2.25.1
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next prev parent reply other threads:[~2023-02-02 7:46 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <0337266cf19f4c98388e3f6d09f590d9de258dc7>
2023-02-02 7:40 ` [RFC PATCH v3 00/22] arm64: livepatch: Use ORC for dynamic frame pointer validation madvenka
2023-02-02 7:40 ` [RFC PATCH v3 01/22] objtool: Reorganize CFI code madvenka
2023-02-02 7:40 ` [RFC PATCH v3 02/22] objtool: Reorganize instruction-related code madvenka
2023-02-02 7:40 ` [RFC PATCH v3 03/22] objtool: Move decode_instructions() to a separate file madvenka
2023-02-02 7:40 ` [RFC PATCH v3 04/22] objtool: Reorganize Unwind hint code madvenka
2023-02-02 7:40 ` [RFC PATCH v3 05/22] objtool: Reorganize ORC types madvenka
2023-02-18 9:30 ` Suraj Jitindar Singh
2023-03-06 16:45 ` Madhavan T. Venkataraman
2023-02-02 7:40 ` [RFC PATCH v3 06/22] objtool: Reorganize ORC code madvenka
2023-02-02 7:40 ` [RFC PATCH v3 07/22] objtool: Reorganize ORC kernel code madvenka
2023-02-02 7:40 ` [RFC PATCH v3 08/22] objtool: Introduce STATIC_CHECK madvenka
2023-02-02 7:40 ` madvenka [this message]
2023-02-02 7:40 ` [RFC PATCH v3 10/22] objtool: arm64: Implement decoder for Dynamic FP validation madvenka
2023-02-02 7:40 ` [RFC PATCH v3 11/22] objtool: arm64: Invoke the decoder madvenka
2023-02-02 7:40 ` [RFC PATCH v3 12/22] objtool: arm64: Compute destinations for call and jump instructions madvenka
2023-02-02 7:40 ` [RFC PATCH v3 13/22] objtool: arm64: Walk instructions and compute CFI for each instruction madvenka
2023-02-02 7:40 ` [RFC PATCH v3 14/22] objtool: arm64: Generate ORC data from CFI for object files madvenka
2023-02-02 7:40 ` [RFC PATCH v3 15/22] objtool: arm64: Add unwind hint support madvenka
2023-02-02 7:40 ` [RFC PATCH v3 16/22] arm64: Add unwind hints to exception handlers madvenka
2023-02-02 7:40 ` [RFC PATCH v3 17/22] arm64: Add kernel and module support for ORC madvenka
2023-02-02 7:40 ` [RFC PATCH v3 18/22] arm64: Build the kernel with ORC information madvenka
2023-02-10 7:52 ` Tomohiro Misono (Fujitsu)
2023-02-11 4:34 ` Madhavan T. Venkataraman
2023-02-02 7:40 ` [RFC PATCH v3 19/22] arm64: unwinder: Add a reliability check in the unwinder based on ORC madvenka
2023-02-23 4:07 ` Suraj Jitindar Singh
2023-03-06 16:52 ` Madhavan T. Venkataraman
2023-02-02 7:40 ` [RFC PATCH v3 20/22] arm64: Define HAVE_DYNAMIC_FTRACE_WITH_ARGS madvenka
2023-02-02 7:40 ` [RFC PATCH v3 21/22] arm64: Define TIF_PATCH_PENDING for livepatch madvenka
2023-02-02 7:40 ` [RFC PATCH v3 22/22] arm64: Enable livepatch for ARM64 madvenka
2023-03-01 3:12 ` [RFC PATCH v3 00/22] arm64: livepatch: Use ORC for dynamic frame pointer validation Tomohiro Misono (Fujitsu)
2023-03-02 16:23 ` Petr Mladek
2023-03-03 9:40 ` Tomohiro Misono (Fujitsu)
2023-03-06 16:58 ` Madhavan T. Venkataraman
2023-03-06 16:57 ` Madhavan T. Venkataraman
2023-03-23 17:17 ` Mark Rutland
2023-04-08 3:40 ` Madhavan T. Venkataraman
2023-04-11 13:25 ` Mark Rutland
2023-04-12 4:17 ` Josh Poimboeuf
2023-04-12 4:48 ` Madhavan T. Venkataraman
2023-04-12 4:50 ` Madhavan T. Venkataraman
2023-04-12 5:01 ` Josh Poimboeuf
2023-04-12 14:50 ` Madhavan T. Venkataraman
2023-04-12 15:52 ` Josh Poimboeuf
2023-04-13 14:59 ` Madhavan T. Venkataraman
2023-04-13 16:30 ` Josh Poimboeuf
2023-04-15 4:27 ` Madhavan T. Venkataraman
2023-04-15 5:05 ` Josh Poimboeuf
2023-04-15 16:15 ` Madhavan T. Venkataraman
2023-04-16 8:21 ` Indu Bhagat
2023-04-13 17:04 ` Nick Desaulniers
2023-04-13 18:15 ` Jose E. Marchesi
2023-04-15 4:14 ` Madhavan T. Venkataraman
2023-12-14 20:49 ` ARM64 Livepatch based on SFrame Madhavan T. Venkataraman
2023-12-15 13:04 ` Mark Rutland
2023-12-15 15:15 ` Madhavan T. Venkataraman
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