forked from KolibriOS/kolibrios
ddk: 3.17-rc1
git-svn-id: svn://kolibrios.org@5056 a494cfbc-eb01-0410-851d-a64ba20cac60
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@@ -63,6 +63,13 @@ extern void __chk_io_ptr(const volatile void __iomem *);
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# include <linux/compiler-intel.h>
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#endif
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/* Clang compiler defines __GNUC__. So we will overwrite implementations
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* coming from above header files here
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*/
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#ifdef __clang__
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#include <linux/compiler-clang.h>
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#endif
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/*
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* Generic compiler-dependent macros required for kernel
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* build go below this comment. Actual compiler/compiler version
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@@ -170,6 +177,10 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
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(typeof(ptr)) (__ptr + (off)); })
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#endif
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#ifndef OPTIMIZER_HIDE_VAR
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#define OPTIMIZER_HIDE_VAR(var) barrier()
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#endif
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/* Not-quite-unique ID. */
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#ifndef __UNIQUE_ID
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# define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __LINE__)
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@@ -298,6 +309,11 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
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# define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
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#endif
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/* Is this type a native word size -- useful for atomic operations */
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#ifndef __native_word
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# define __native_word(t) (sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
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#endif
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/* Compile time object size, -1 for unknown */
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#ifndef __compiletime_object_size
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# define __compiletime_object_size(obj) -1
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@@ -307,9 +323,18 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
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#endif
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#ifndef __compiletime_error
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# define __compiletime_error(message)
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/*
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* Sparse complains of variable sized arrays due to the temporary variable in
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* __compiletime_assert. Unfortunately we can't just expand it out to make
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* sparse see a constant array size without breaking compiletime_assert on old
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* versions of GCC (e.g. 4.2.4), so hide the array from sparse altogether.
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*/
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# ifndef __CHECKER__
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# define __compiletime_error_fallback(condition) \
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do { ((void)sizeof(char[1 - 2 * condition])); } while (0)
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#else
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# endif
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#endif
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#ifndef __compiletime_error_fallback
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# define __compiletime_error_fallback(condition) do { } while (0)
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#endif
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@@ -337,6 +362,10 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
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#define compiletime_assert(condition, msg) \
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_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
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#define compiletime_assert_atomic_type(t) \
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compiletime_assert(__native_word(t), \
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"Need native word sized stores/loads for atomicity.")
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/*
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* Prevent the compiler from merging or refetching accesses. The compiler
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* is also forbidden from reordering successive instances of ACCESS_ONCE(),
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@@ -354,7 +383,9 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
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/* Ignore/forbid kprobes attach on very low level functions marked by this attribute: */
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#ifdef CONFIG_KPROBES
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# define __kprobes __attribute__((__section__(".kprobes.text")))
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# define nokprobe_inline __always_inline
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#else
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# define __kprobes
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# define nokprobe_inline inline
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#endif
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#endif /* __LINUX_COMPILER_H */
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