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
