compiler-gcc2.h
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上传日期:2009-04-28
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文件大小:1k
- /* Never include this file directly. Include <linux/compiler.h> instead. */
- /* These definitions are for GCC v2.x. */
- /* Somewhere in the middle of the GCC 2.96 development cycle, we implemented
- a mechanism by which the user can annotate likely branch directions and
- expect the blocks to be reordered appropriately. Define __builtin_expect
- to nothing for earlier compilers. */
- #include <linux/compiler-gcc.h>
- #if __GNUC_MINOR__ < 96
- # define __builtin_expect(x, expected_value) (x)
- #endif
- #define __attribute_used__ __attribute__((__unused__))
- /*
- * The attribute `pure' is not implemented in GCC versions earlier
- * than 2.96.
- */
- #if __GNUC_MINOR__ >= 96
- # define __attribute_pure__ __attribute__((pure))
- # define __attribute_const__ __attribute__((__const__))
- #endif
- /* GCC 2.95.x/2.96 recognize __va_copy, but not va_copy. Actually later GCC's
- * define both va_copy and __va_copy, but the latter may go away, so limit this
- * to this header */
- #define va_copy __va_copy