mirror of
https://github.com/linux-sunxi/meta-sunxi.git
synced 2024-12-27 13:38:21 +01:00
0c6af07690
Fixes the following compile error with GCC 6: [...]/kernel-source/include/linux/compiler-gcc.h:103:30: fatal error: linux/compiler-gcc6.h: No such file or directory Signed-off-by: Jonathan Liu <net147@gmail.com>
277 lines
9.1 KiB
Diff
277 lines
9.1 KiB
Diff
From a66aaac889f09425ff0f3ddb27aca46ae02d6eea Mon Sep 17 00:00:00 2001
|
|
From: Joe Perches <joe@perches.com>
|
|
Date: Thu, 25 Jun 2015 15:01:02 -0700
|
|
Subject: [PATCH] compiler-gcc: integrate the various compiler-gcc[345].h files
|
|
|
|
As gcc major version numbers are going to advance rather rapidly in the
|
|
future, there's no real value in separate files for each compiler
|
|
version.
|
|
|
|
Deduplicate some of the macros #defined in each file too.
|
|
|
|
Neaten comments using normal kernel commenting style.
|
|
|
|
Upstream-Status: Backport
|
|
|
|
Signed-off-by: Joe Perches <joe@perches.com>
|
|
Cc: Andi Kleen <andi@firstfloor.org>
|
|
Cc: Michal Marek <mmarek@suse.cz>
|
|
Cc: Segher Boessenkool <segher@kernel.crashing.org>
|
|
Cc: Sasha Levin <levinsasha928@gmail.com>
|
|
Cc: Anton Blanchard <anton@samba.org>
|
|
Cc: Alan Modra <amodra@gmail.com>
|
|
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Signed-off-by: Jonathan Liu <net147@gmail.com>
|
|
---
|
|
include/linux/compiler-gcc.h | 120 ++++++++++++++++++++++++++++++++++++++++--
|
|
include/linux/compiler-gcc3.h | 23 --------
|
|
include/linux/compiler-gcc4.h | 74 --------------------------
|
|
3 files changed, 116 insertions(+), 101 deletions(-)
|
|
delete mode 100644 include/linux/compiler-gcc3.h
|
|
delete mode 100644 include/linux/compiler-gcc4.h
|
|
|
|
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
|
|
index 7970e31..727add9 100644
|
|
--- a/include/linux/compiler-gcc.h
|
|
+++ b/include/linux/compiler-gcc.h
|
|
@@ -97,10 +97,122 @@
|
|
#define __maybe_unused __attribute__((unused))
|
|
#define __always_unused __attribute__((unused))
|
|
|
|
-#define __gcc_header(x) #x
|
|
-#define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h)
|
|
-#define gcc_header(x) _gcc_header(x)
|
|
-#include gcc_header(__GNUC__)
|
|
+/* gcc version specific checks */
|
|
+
|
|
+#if GCC_VERSION < 30200
|
|
+# error Sorry, your compiler is too old - please upgrade it.
|
|
+#endif
|
|
+
|
|
+#if GCC_VERSION < 30300
|
|
+# define __used __attribute__((__unused__))
|
|
+#else
|
|
+# define __used __attribute__((__used__))
|
|
+#endif
|
|
+
|
|
+#ifdef CONFIG_GCOV_KERNEL
|
|
+# if GCC_VERSION < 30400
|
|
+# error "GCOV profiling support for gcc versions below 3.4 not included"
|
|
+# endif /* __GNUC_MINOR__ */
|
|
+#endif /* CONFIG_GCOV_KERNEL */
|
|
+
|
|
+#if GCC_VERSION >= 30400
|
|
+#define __must_check __attribute__((warn_unused_result))
|
|
+#endif
|
|
+
|
|
+#if GCC_VERSION >= 40000
|
|
+
|
|
+/* GCC 4.1.[01] miscompiles __weak */
|
|
+#ifdef __KERNEL__
|
|
+# if GCC_VERSION >= 40100 && GCC_VERSION <= 40101
|
|
+# error Your version of gcc miscompiles the __weak directive
|
|
+# endif
|
|
+#endif
|
|
+
|
|
+#define __used __attribute__((__used__))
|
|
+#define __compiler_offsetof(a, b) \
|
|
+ __builtin_offsetof(a, b)
|
|
+
|
|
+#if GCC_VERSION >= 40100 && GCC_VERSION < 40600
|
|
+# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
|
|
+#endif
|
|
+
|
|
+#if GCC_VERSION >= 40300
|
|
+/* Mark functions as cold. gcc will assume any path leading to a call
|
|
+ * to them will be unlikely. This means a lot of manual unlikely()s
|
|
+ * are unnecessary now for any paths leading to the usual suspects
|
|
+ * like BUG(), printk(), panic() etc. [but let's keep them for now for
|
|
+ * older compilers]
|
|
+ *
|
|
+ * Early snapshots of gcc 4.3 don't support this and we can't detect this
|
|
+ * in the preprocessor, but we can live with this because they're unreleased.
|
|
+ * Maketime probing would be overkill here.
|
|
+ *
|
|
+ * gcc also has a __attribute__((__hot__)) to move hot functions into
|
|
+ * a special section, but I don't see any sense in this right now in
|
|
+ * the kernel context
|
|
+ */
|
|
+#define __cold __attribute__((__cold__))
|
|
+
|
|
+#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
|
|
+
|
|
+#ifndef __CHECKER__
|
|
+# define __compiletime_warning(message) __attribute__((warning(message)))
|
|
+# define __compiletime_error(message) __attribute__((error(message)))
|
|
+#endif /* __CHECKER__ */
|
|
+#endif /* GCC_VERSION >= 40300 */
|
|
+
|
|
+#if GCC_VERSION >= 40500
|
|
+/*
|
|
+ * Mark a position in code as unreachable. This can be used to
|
|
+ * suppress control flow warnings after asm blocks that transfer
|
|
+ * control elsewhere.
|
|
+ *
|
|
+ * Early snapshots of gcc 4.5 don't support this and we can't detect
|
|
+ * this in the preprocessor, but we can live with this because they're
|
|
+ * unreleased. Really, we need to have autoconf for the kernel.
|
|
+ */
|
|
+#define unreachable() __builtin_unreachable()
|
|
+
|
|
+/* Mark a function definition as prohibited from being cloned. */
|
|
+#define __noclone __attribute__((__noclone__))
|
|
+
|
|
+#endif /* GCC_VERSION >= 40500 */
|
|
+
|
|
+#if GCC_VERSION >= 40600
|
|
+/*
|
|
+ * Tell the optimizer that something else uses this function or variable.
|
|
+ */
|
|
+#define __visible __attribute__((externally_visible))
|
|
+#endif
|
|
+
|
|
+/*
|
|
+ * GCC 'asm goto' miscompiles certain code sequences:
|
|
+ *
|
|
+ * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
|
|
+ *
|
|
+ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
|
|
+ *
|
|
+ * (asm goto is automatically volatile - the naming reflects this.)
|
|
+ */
|
|
+#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
|
|
+
|
|
+#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
|
|
+#if GCC_VERSION >= 40400
|
|
+#define __HAVE_BUILTIN_BSWAP32__
|
|
+#define __HAVE_BUILTIN_BSWAP64__
|
|
+#endif
|
|
+#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)
|
|
+#define __HAVE_BUILTIN_BSWAP16__
|
|
+#endif
|
|
+#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
|
|
+
|
|
+#if GCC_VERSION >= 50000
|
|
+#define KASAN_ABI_VERSION 4
|
|
+#elif GCC_VERSION >= 40902
|
|
+#define KASAN_ABI_VERSION 3
|
|
+#endif
|
|
+
|
|
+#endif /* gcc version >= 40000 specific checks */
|
|
|
|
#if !defined(__noclone)
|
|
#define __noclone /* not needed */
|
|
diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
|
|
deleted file mode 100644
|
|
index 37d4124..0000000
|
|
--- a/include/linux/compiler-gcc3.h
|
|
+++ /dev/null
|
|
@@ -1,23 +0,0 @@
|
|
-#ifndef __LINUX_COMPILER_H
|
|
-#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
|
|
-#endif
|
|
-
|
|
-#if __GNUC_MINOR__ < 2
|
|
-# error Sorry, your compiler is too old - please upgrade it.
|
|
-#endif
|
|
-
|
|
-#if __GNUC_MINOR__ >= 3
|
|
-# define __used __attribute__((__used__))
|
|
-#else
|
|
-# define __used __attribute__((__unused__))
|
|
-#endif
|
|
-
|
|
-#if __GNUC_MINOR__ >= 4
|
|
-#define __must_check __attribute__((warn_unused_result))
|
|
-#endif
|
|
-
|
|
-#ifdef CONFIG_GCOV_KERNEL
|
|
-# if __GNUC_MINOR__ < 4
|
|
-# error "GCOV profiling support for gcc versions below 3.4 not included"
|
|
-# endif /* __GNUC_MINOR__ */
|
|
-#endif /* CONFIG_GCOV_KERNEL */
|
|
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
|
|
deleted file mode 100644
|
|
index 91b1aa8..0000000
|
|
--- a/include/linux/compiler-gcc4.h
|
|
+++ /dev/null
|
|
@@ -1,74 +0,0 @@
|
|
-#ifndef __LINUX_COMPILER_H
|
|
-#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
|
|
-#endif
|
|
-
|
|
-/* GCC 4.1.[01] miscompiles __weak */
|
|
-#ifdef __KERNEL__
|
|
-# if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1
|
|
-# error Your version of gcc miscompiles the __weak directive
|
|
-# endif
|
|
-#endif
|
|
-
|
|
-#define __used __attribute__((__used__))
|
|
-#define __must_check __attribute__((warn_unused_result))
|
|
-#define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
|
|
-
|
|
-#if __GNUC_MINOR__ >= 3
|
|
-/* Mark functions as cold. gcc will assume any path leading to a call
|
|
- to them will be unlikely. This means a lot of manual unlikely()s
|
|
- are unnecessary now for any paths leading to the usual suspects
|
|
- like BUG(), printk(), panic() etc. [but let's keep them for now for
|
|
- older compilers]
|
|
-
|
|
- Early snapshots of gcc 4.3 don't support this and we can't detect this
|
|
- in the preprocessor, but we can live with this because they're unreleased.
|
|
- Maketime probing would be overkill here.
|
|
-
|
|
- gcc also has a __attribute__((__hot__)) to move hot functions into
|
|
- a special section, but I don't see any sense in this right now in
|
|
- the kernel context */
|
|
-#define __cold __attribute__((__cold__))
|
|
-
|
|
-#define __linktime_error(message) __attribute__((__error__(message)))
|
|
-
|
|
-/*
|
|
- * GCC 'asm goto' miscompiles certain code sequences:
|
|
- *
|
|
- * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
|
|
- *
|
|
- * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
|
|
- * Fixed in GCC 4.8.2 and later versions.
|
|
- *
|
|
- * (asm goto is automatically volatile - the naming reflects this.)
|
|
- */
|
|
-#if GCC_VERSION <= 40801
|
|
-# define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
|
|
-#else
|
|
-# define asm_volatile_goto(x...) do { asm goto(x); } while (0)
|
|
-#endif
|
|
-
|
|
-#if __GNUC_MINOR__ >= 5
|
|
-/*
|
|
- * Mark a position in code as unreachable. This can be used to
|
|
- * suppress control flow warnings after asm blocks that transfer
|
|
- * control elsewhere.
|
|
- *
|
|
- * Early snapshots of gcc 4.5 don't support this and we can't detect
|
|
- * this in the preprocessor, but we can live with this because they're
|
|
- * unreleased. Really, we need to have autoconf for the kernel.
|
|
- */
|
|
-#define unreachable() __builtin_unreachable()
|
|
-
|
|
-/* Mark a function definition as prohibited from being cloned. */
|
|
-#define __noclone __attribute__((__noclone__))
|
|
-
|
|
-#endif
|
|
-#endif
|
|
-
|
|
-#if __GNUC_MINOR__ > 0
|
|
-#define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
|
|
-#endif
|
|
-#if __GNUC_MINOR__ >= 4 && !defined(__CHECKER__)
|
|
-#define __compiletime_warning(message) __attribute__((warning(message)))
|
|
-#define __compiletime_error(message) __attribute__((error(message)))
|
|
-#endif
|
|
--
|
|
2.10.0
|
|
|