| /* public domain */ |
| |
| #ifndef COMPILER_H |
| #define COMPILER_H |
| |
| #include "config-host.h" |
| |
| /*---------------------------------------------------------------------------- |
| | The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler. |
| | The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h. |
| *----------------------------------------------------------------------------*/ |
| #if defined(__GNUC__) && defined(__GNUC_MINOR__) |
| # define QEMU_GNUC_PREREQ(maj, min) \ |
| ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) |
| #else |
| # define QEMU_GNUC_PREREQ(maj, min) 0 |
| #endif |
| |
| #define QEMU_NORETURN __attribute__ ((__noreturn__)) |
| |
| #if QEMU_GNUC_PREREQ(3, 4) |
| #define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) |
| #else |
| #define QEMU_WARN_UNUSED_RESULT |
| #endif |
| |
| #if defined(_WIN32) |
| # define QEMU_PACKED __attribute__((gcc_struct, packed)) |
| #else |
| # define QEMU_PACKED __attribute__((packed)) |
| #endif |
| |
| #define cat(x,y) x ## y |
| #define cat2(x,y) cat(x,y) |
| #define QEMU_BUILD_BUG_ON(x) \ |
| typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused)); |
| |
| #if defined __GNUC__ |
| # if !QEMU_GNUC_PREREQ(4, 4) |
| /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */ |
| # define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m))) |
| # else |
| /* Use gnu_printf when supported (qemu uses standard format strings). */ |
| # define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m))) |
| # if defined(_WIN32) |
| /* Map __printf__ to __gnu_printf__ because we want standard format strings |
| * even when MinGW or GLib include files use __printf__. */ |
| # define __printf__ __gnu_printf__ |
| # endif |
| # endif |
| #else |
| #define GCC_FMT_ATTR(n, m) |
| #endif |
| |
| #endif /* COMPILER_H */ |