linux-kernel - [PATCH v3 03/10] objtool: Move macros describing structures to arch-dependent code

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Date:   Fri,  4 Sep 2020 16:30:21 +0100
From:   Julien Thierry <jthierry@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     jpoimboe@...hat.com, peterz@...radead.org, mbenes@...e.cz,
        raphael.gault@....com, benh@...nel.crashing.org,
        Julien Thierry <jthierry@...hat.com>
Subject: [PATCH v3 03/10] objtool: Move macros describing structures to arch-dependent code

Some macros are defined to describe the size and layout of structures
exception_table_entry, jump_entry and alt_instr. These values can vary
from one architecture to another.

Have the values be defined by arch specific code.

Suggested-by: Raphael Gault <raphael.gault@....com>
Reviewed-by: Miroslav Benes <mbenes@...e.cz>
Signed-off-by: Julien Thierry <jthierry@...hat.com>
---
 tools/objtool/arch/x86/include/arch_special.h | 20 +++++++++++++++++++
 tools/objtool/special.c                       | 16 +--------------
 2 files changed, 21 insertions(+), 15 deletions(-)
 create mode 100644 tools/objtool/arch/x86/include/arch_special.h

diff --git a/tools/objtool/arch/x86/include/arch_special.h b/tools/objtool/arch/x86/include/arch_special.h
new file mode 100644
index 000000000000..d818b2bffa02
--- /dev/null
+++ b/tools/objtool/arch/x86/include/arch_special.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _X86_ARCH_SPECIAL_H
+#define _X86_ARCH_SPECIAL_H
+
+#define EX_ENTRY_SIZE		12
+#define EX_ORIG_OFFSET		0
+#define EX_NEW_OFFSET		4
+
+#define JUMP_ENTRY_SIZE		16
+#define JUMP_ORIG_OFFSET	0
+#define JUMP_NEW_OFFSET		4
+
+#define ALT_ENTRY_SIZE		13
+#define ALT_ORIG_OFFSET		0
+#define ALT_NEW_OFFSET		4
+#define ALT_FEATURE_OFFSET	8
+#define ALT_ORIG_LEN_OFFSET	10
+#define ALT_NEW_LEN_OFFSET	11
+
+#endif /* _X86_ARCH_SPECIAL_H */
diff --git a/tools/objtool/special.c b/tools/objtool/special.c
index e893f1e48e44..b04f395de5de 100644
--- a/tools/objtool/special.c
+++ b/tools/objtool/special.c
@@ -14,21 +14,7 @@
 #include "builtin.h"
 #include "special.h"
 #include "warn.h"
-
-#define EX_ENTRY_SIZE		12
-#define EX_ORIG_OFFSET		0
-#define EX_NEW_OFFSET		4
-
-#define JUMP_ENTRY_SIZE		16
-#define JUMP_ORIG_OFFSET	0
-#define JUMP_NEW_OFFSET		4
-
-#define ALT_ENTRY_SIZE		13
-#define ALT_ORIG_OFFSET		0
-#define ALT_NEW_OFFSET		4
-#define ALT_FEATURE_OFFSET	8
-#define ALT_ORIG_LEN_OFFSET	10
-#define ALT_NEW_LEN_OFFSET	11
+#include "arch_special.h"
 
 #define X86_FEATURE_POPCNT (4*32+23)
 #define X86_FEATURE_SMAP   (9*32+20)
-- 
2.21.3