1f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner/* public domain */ 2f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 3f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#ifndef COMPILER_H 4f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define COMPILER_H 5f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 6f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#include "config-host.h" 7f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 8f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner/*---------------------------------------------------------------------------- 9f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner| The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler. 10f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner| The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h. 11f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner*----------------------------------------------------------------------------*/ 12f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#if defined(__GNUC__) && defined(__GNUC_MINOR__) 13f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define QEMU_GNUC_PREREQ(maj, min) \ 14f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) 15f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#else 16f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define QEMU_GNUC_PREREQ(maj, min) 0 17f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#endif 18f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 19f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define QEMU_NORETURN __attribute__ ((__noreturn__)) 20f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 21f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#if QEMU_GNUC_PREREQ(3, 4) 22f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) 23f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#else 24f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define QEMU_WARN_UNUSED_RESULT 25f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#endif 26f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 27f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#if defined(_WIN32) 28f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define QEMU_PACKED __attribute__((gcc_struct, packed)) 29f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#else 30f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define QEMU_PACKED __attribute__((packed)) 31f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#endif 32f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 33f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define cat(x,y) x ## y 34f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define cat2(x,y) cat(x,y) 35f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define QEMU_BUILD_BUG_ON(x) \ 36f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused)); 37f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 38f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#if defined __GNUC__ 39f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# if !QEMU_GNUC_PREREQ(4, 4) 40f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */ 41f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m))) 42f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# else 43f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner /* Use gnu_printf when supported (qemu uses standard format strings). */ 44f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m))) 45f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# if defined(_WIN32) 46f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner /* Map __printf__ to __gnu_printf__ because we want standard format strings 47f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner * even when MinGW or GLib include files use __printf__. */ 48f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# define __printf__ __gnu_printf__ 49f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# endif 50f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner# endif 51f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#else 52f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#define GCC_FMT_ATTR(n, m) 53f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#endif 54f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner 55f6669d7bf05c4abb8f95862e82322ec4689251f4David 'Digit' Turner#endif /* COMPILER_H */ 56