diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/compiler-gcc.h')
-rw-r--r-- | ANDROID_3.4.5/include/linux/compiler-gcc.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/ANDROID_3.4.5/include/linux/compiler-gcc.h b/ANDROID_3.4.5/include/linux/compiler-gcc.h deleted file mode 100644 index e5834aa2..00000000 --- a/ANDROID_3.4.5/include/linux/compiler-gcc.h +++ /dev/null @@ -1,112 +0,0 @@ -#ifndef __LINUX_COMPILER_H -#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." -#endif - -/* - * Common definitions for all gcc versions go here. - */ - - -/* Optimization barrier */ -/* The "volatile" is due to gcc bugs */ -#define barrier() __asm__ __volatile__("": : :"memory") - -/* - * This macro obfuscates arithmetic on a variable address so that gcc - * shouldn't recognize the original var, and make assumptions about it. - * - * This is needed because the C standard makes it undefined to do - * pointer arithmetic on "objects" outside their boundaries and the - * gcc optimizers assume this is the case. In particular they - * assume such arithmetic does not wrap. - * - * A miscompilation has been observed because of this on PPC. - * To work around it we hide the relationship of the pointer and the object - * using this macro. - * - * Versions of the ppc64 compiler before 4.1 had a bug where use of - * RELOC_HIDE could trash r30. The bug can be worked around by changing - * the inline assembly constraint from =g to =r, in this particular - * case either is valid. - */ -#define RELOC_HIDE(ptr, off) \ - ({ unsigned long __ptr; \ - __asm__ ("" : "=r"(__ptr) : "0"(ptr)); \ - (typeof(ptr)) (__ptr + (off)); }) - -#ifdef __CHECKER__ -#define __must_be_array(arr) 0 -#else -/* &a[0] degrades to a pointer: a different type from an array */ -#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) -#endif - -/* - * Force always-inline if the user requests it so via the .config, - * or if gcc is too old: - */ -#if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \ - !defined(CONFIG_OPTIMIZE_INLINING) || (__GNUC__ < 4) -# define inline inline __attribute__((always_inline)) -# define __inline__ __inline__ __attribute__((always_inline)) -# define __inline __inline __attribute__((always_inline)) -#else -/* A lot of inline functions can cause havoc with function tracing */ -# define inline inline notrace -# define __inline__ __inline__ notrace -# define __inline __inline notrace -#endif - -#define __deprecated __attribute__((deprecated)) -#define __packed __attribute__((packed)) -#define __weak __attribute__((weak)) - -/* - * it doesn't make sense on ARM (currently the only user of __naked) to trace - * naked functions because then mcount is called without stack and frame pointer - * being set up and there is no chance to restore the lr register to the value - * before mcount was called. - * - * The asm() bodies of naked functions often depend on standard calling conventions, - * therefore they must be noinline and noclone. GCC 4.[56] currently fail to enforce - * this, so we must do so ourselves. See GCC PR44290. - */ -#define __naked __attribute__((naked)) noinline __noclone notrace - -#define __noreturn __attribute__((noreturn)) - -/* - * From the GCC manual: - * - * Many functions have no effects except the return value and their - * return value depends only on the parameters and/or global - * variables. Such a function can be subject to common subexpression - * elimination and loop optimization just as an arithmetic operator - * would be. - * [...] - */ -#define __pure __attribute__((pure)) -#define __aligned(x) __attribute__((aligned(x))) -#define __printf(a, b) __attribute__((format(printf, a, b))) -#define __scanf(a, b) __attribute__((format(scanf, a, b))) -#define noinline __attribute__((noinline)) -#define __attribute_const__ __attribute__((__const__)) -#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__) - -#if !defined(__noclone) -#define __noclone /* not needed */ -#endif - -/* - * A trick to suppress uninitialized variable warning without generating any - * code - */ -#define uninitialized_var(x) x = x - -#define __always_inline inline __attribute__((always_inline)) |