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Merge pull request #172 from twoerner/contrib/twoerner/gcc6-uboot-fix

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u-boot-sunxi: gcc6 fix
This commit is contained in:
Enrico Butera 2017-04-10 22:13:12 +02:00 committed by GitHub
commit 679053489c
2 changed files with 70 additions and 0 deletions
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1
recipes-bsp/u-boot/u-boot-sunxi.bb
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@ -21,6 +21,7 @@ UBOOT_MACHINE_meleg = "Mele_A1000G_config"
SRC_URI = " \
git://github.com/linux-sunxi/u-boot-sunxi.git;protocol=git;branch=sunxi \
file://0002-gcc5-fixes.patch \
file://0003-gcc6-fixes.patch \
"
PE = "1"

69
recipes-bsp/u-boot/u-boot-sunxi/0003-gcc6-fixes.patch Normal file
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@ -0,0 +1,69 @@
diff -urN git-ORIG/include/linux/compiler-gcc6.h git/include/linux/compiler-gcc6.h
--- git-ORIG/include/linux/compiler-gcc6.h 1969-12-31 19:00:00.000000000 -0500
+++ git/include/linux/compiler-gcc6.h 2017-04-09 19:50:16.920945874 -0400
@@ -0,0 +1,65 @@
+#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.
+ *
+ * (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 */