1/* public domain */ 2 3#ifndef COMPILER_H 4#define COMPILER_H 5 6#include "config-host.h" 7 8/*---------------------------------------------------------------------------- 9| The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler. 10| The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h. 11*----------------------------------------------------------------------------*/ 12#if defined(__GNUC__) && defined(__GNUC_MINOR__) 13# define QEMU_GNUC_PREREQ(maj, min) \ 14 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) 15#else 16# define QEMU_GNUC_PREREQ(maj, min) 0 17#endif 18 19#define QEMU_NORETURN __attribute__ ((__noreturn__)) 20 21#if QEMU_GNUC_PREREQ(3, 4) 22#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) 23#else 24#define QEMU_WARN_UNUSED_RESULT 25#endif 26 27#if defined(_WIN32) 28# define QEMU_PACKED __attribute__((gcc_struct, packed)) 29#else 30# define QEMU_PACKED __attribute__((packed)) 31#endif 32 33#define cat(x,y) x ## y 34#define cat2(x,y) cat(x,y) 35#define QEMU_BUILD_BUG_ON(x) \ 36 typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused)); 37 38#if defined __GNUC__ 39# if !QEMU_GNUC_PREREQ(4, 4) 40 /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */ 41# define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m))) 42# else 43 /* Use gnu_printf when supported (qemu uses standard format strings). */ 44# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m))) 45# if defined(_WIN32) 46 /* Map __printf__ to __gnu_printf__ because we want standard format strings 47 * even when MinGW or GLib include files use __printf__. */ 48# define __printf__ __gnu_printf__ 49# endif 50# endif 51#else 52#define GCC_FMT_ATTR(n, m) 53#endif 54 55#endif /* COMPILER_H */ 56