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Merge pull request #149 from net147/gcc6-fixes
linux-sunxi: fix compiling with GCC 6
This commit is contained in:
Enrico Butera
GitHub
commit
1a840570a9
@ -0,0 +1,276 @@
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From a66aaac889f09425ff0f3ddb27aca46ae02d6eea Mon Sep 17 00:00:00 2001
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From: Joe Perches <joe@perches.com>
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Date: Thu, 25 Jun 2015 15:01:02 -0700
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Subject: [PATCH] compiler-gcc: integrate the various compiler-gcc[345].h files
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As gcc major version numbers are going to advance rather rapidly in the
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future, there's no real value in separate files for each compiler
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|
version.
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Deduplicate some of the macros #defined in each file too.
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Neaten comments using normal kernel commenting style.
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Upstream-Status: Backport
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Signed-off-by: Joe Perches <joe@perches.com>
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Cc: Andi Kleen <andi@firstfloor.org>
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Cc: Michal Marek <mmarek@suse.cz>
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Cc: Segher Boessenkool <segher@kernel.crashing.org>
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Cc: Sasha Levin <levinsasha928@gmail.com>
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Cc: Anton Blanchard <anton@samba.org>
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Cc: Alan Modra <amodra@gmail.com>
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Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Jonathan Liu <net147@gmail.com>
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---
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include/linux/compiler-gcc.h | 120 ++++++++++++++++++++++++++++++++++++++++--
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include/linux/compiler-gcc3.h | 23 --------
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include/linux/compiler-gcc4.h | 74 --------------------------
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3 files changed, 116 insertions(+), 101 deletions(-)
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delete mode 100644 include/linux/compiler-gcc3.h
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delete mode 100644 include/linux/compiler-gcc4.h
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diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
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index 7970e31..727add9 100644
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--- a/include/linux/compiler-gcc.h
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+++ b/include/linux/compiler-gcc.h
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@@ -97,10 +97,122 @@
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#define __maybe_unused __attribute__((unused))
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#define __always_unused __attribute__((unused))
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-#define __gcc_header(x) #x
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-#define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h)
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-#define gcc_header(x) _gcc_header(x)
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-#include gcc_header(__GNUC__)
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+/* gcc version specific checks */
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+
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+#if GCC_VERSION < 30200
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+# error Sorry, your compiler is too old - please upgrade it.
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+#endif
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+
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+#if GCC_VERSION < 30300
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+# define __used __attribute__((__unused__))
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+#else
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+# define __used __attribute__((__used__))
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+#endif
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+
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+#ifdef CONFIG_GCOV_KERNEL
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|
+# if GCC_VERSION < 30400
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+# error "GCOV profiling support for gcc versions below 3.4 not included"
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|
+# endif /* __GNUC_MINOR__ */
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|
+#endif /* CONFIG_GCOV_KERNEL */
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|
+
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|
+#if GCC_VERSION >= 30400
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+#define __must_check __attribute__((warn_unused_result))
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|
+#endif
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|
+
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|
+#if GCC_VERSION >= 40000
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|
+
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|
+/* GCC 4.1.[01] miscompiles __weak */
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|
+#ifdef __KERNEL__
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|
+# if GCC_VERSION >= 40100 && GCC_VERSION <= 40101
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|
+# error Your version of gcc miscompiles the __weak directive
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|
+# endif
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|
+#endif
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|
+
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|
+#define __used __attribute__((__used__))
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|
+#define __compiler_offsetof(a, b) \
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|
+ __builtin_offsetof(a, b)
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|
+
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|
+#if GCC_VERSION >= 40100 && GCC_VERSION < 40600
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|
+# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
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|
+#endif
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|
+
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||||||
|
+#if GCC_VERSION >= 40300
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|
+/* Mark functions as cold. gcc will assume any path leading to a call
|
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|
+ * 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
|
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|
+ * 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
|
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|
+ * 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)))
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||||||
|
+# define __compiletime_error(message) __attribute__((error(message)))
|
||||||
|
+#endif /* __CHECKER__ */
|
||||||
|
+#endif /* GCC_VERSION >= 40300 */
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|
+
|
||||||
|
+#if GCC_VERSION >= 40500
|
||||||
|
+/*
|
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|
+ * Mark a position in code as unreachable. This can be used to
|
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|
+ * 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
|
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|
+ * this in the preprocessor, but we can live with this because they're
|
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|
+ * unreleased. Really, we need to have autoconf for the kernel.
|
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|
+ */
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|
+#define unreachable() __builtin_unreachable()
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|
+
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|
+/* Mark a function definition as prohibited from being cloned. */
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|
+#define __noclone __attribute__((__noclone__))
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|
+
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|
+#endif /* GCC_VERSION >= 40500 */
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|
+
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|
+#if GCC_VERSION >= 40600
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|
+/*
|
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|
+ * Tell the optimizer that something else uses this function or variable.
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||||||
|
+ */
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|
+#define __visible __attribute__((externally_visible))
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|
+#endif
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|
+
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|
+/*
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|
+ * GCC 'asm goto' miscompiles certain code sequences:
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|
+ *
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|
+ * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
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|
+ *
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|
+ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
|
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|
+ *
|
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|
+ * (asm goto is automatically volatile - the naming reflects this.)
|
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|
+ */
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|
+#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
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|
+
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|
+#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
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|
+#if GCC_VERSION >= 40400
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||||||
|
+#define __HAVE_BUILTIN_BSWAP32__
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|
+#define __HAVE_BUILTIN_BSWAP64__
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|
+#endif
|
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|
+#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)
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||||||
|
+#define __HAVE_BUILTIN_BSWAP16__
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||||||
|
+#endif
|
||||||
|
+#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
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|
+
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|
+#if GCC_VERSION >= 50000
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|
+#define KASAN_ABI_VERSION 4
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|
+#elif GCC_VERSION >= 40902
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||||||
|
+#define KASAN_ABI_VERSION 3
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|
+#endif
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|
+
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|
+#endif /* gcc version >= 40000 specific checks */
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|
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|
#if !defined(__noclone)
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|
#define __noclone /* not needed */
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|
diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
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|
deleted file mode 100644
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|
index 37d4124..0000000
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--- a/include/linux/compiler-gcc3.h
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+++ /dev/null
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|
@@ -1,23 +0,0 @@
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|
-#ifndef __LINUX_COMPILER_H
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|
-#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
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|
-#endif
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|
-
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||||||
|
-#if __GNUC_MINOR__ < 2
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|
-# error Sorry, your compiler is too old - please upgrade it.
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|
-#endif
|
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|
-
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||||||
|
-#if __GNUC_MINOR__ >= 3
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|
-# define __used __attribute__((__used__))
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|
-#else
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|
-# define __used __attribute__((__unused__))
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|
-#endif
|
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|
-
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||||||
|
-#if __GNUC_MINOR__ >= 4
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||||||
|
-#define __must_check __attribute__((warn_unused_result))
|
||||||
|
-#endif
|
||||||
|
-
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||||||
|
-#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
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|
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
|
||||||
|
|
||||||
@ -1,71 +0,0 @@
|
|||||||
Index: git/include/linux/compiler-gcc5.h
|
|
||||||
===================================================================
|
|
||||||
--- git/include/linux/compiler-gcc5.h 2015-09-19 20:11:27.999423338 +0200
|
|
||||||
+++ git/include/linux/compiler-gcc5.h 2015-09-23 10:26:05.000000000 +0200
|
|
||||||
@@ -0,0 +1,66 @@
|
|
||||||
+#ifndef __LINUX_COMPILER_H
|
|
||||||
+#error "Please don't include <linux/compiler-gcc5.h> directly, include <linux/compiler.h> instead."
|
|
||||||
+#endif
|
|
||||||
+
|
|
||||||
+#define __used __attribute__((__used__))
|
|
||||||
+#define __must_check __attribute__((warn_unused_result))
|
|
||||||
+#define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
|
|
||||||
+
|
|
||||||
+/* 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__ */
|
|
||||||
+
|
|
||||||
+/*
|
|
||||||
+ * 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__))
|
|
||||||
+
|
|
||||||
+/*
|
|
||||||
+ * Tell the optimizer that something else uses this function or variable.
|
|
||||||
+ */
|
|
||||||
+#define __visible __attribute__((externally_visible))
|
|
||||||
+
|
|
||||||
+/*
|
|
||||||
+ * 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.)
|
|
||||||
+ */
|
|
||||||
+#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
|
|
||||||
+
|
|
||||||
+#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
|
|
||||||
+#define __HAVE_BUILTIN_BSWAP32__
|
|
||||||
+#define __HAVE_BUILTIN_BSWAP64__
|
|
||||||
+#define __HAVE_BUILTIN_BSWAP16__
|
|
||||||
+#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
|
|
||||||
@ -12,7 +12,7 @@ SRCREV_pn-${PN} = "d47d367036be38c5180632ec8a3ad169a4593a88"
|
|||||||
MACHINE_KERNEL_PR_append = "a"
|
MACHINE_KERNEL_PR_append = "a"
|
||||||
|
|
||||||
SRC_URI += "git://github.com/linux-sunxi/linux-sunxi.git;branch=sunxi-3.4;protocol=git \
|
SRC_URI += "git://github.com/linux-sunxi/linux-sunxi.git;branch=sunxi-3.4;protocol=git \
|
||||||
file://0001-compiler-gcc5.patch \
|
file://0001-compiler-gcc-integrate-the-various-compiler-gcc-345-.patch \
|
||||||
file://0002-use-static-inline-in-ARM-ftrace.patch \
|
file://0002-use-static-inline-in-ARM-ftrace.patch \
|
||||||
file://0001-gcc5-fixes.patch \
|
file://0001-gcc5-fixes.patch \
|
||||||
file://defconfig \
|
file://defconfig \
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user