PPC: e500: msync is 440 only, e500 has real sync
[qemu.git] / compiler.h
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 QEMU_BUILD_BUG_ON(x) \
34 typedef char qemu_build_bug_on__##__LINE__[(x)?-1:1];
35
36 #if defined __GNUC__
37 # if !QEMU_GNUC_PREREQ(4, 4)
38 /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
39 # define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
40 # define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
41 # else
42 /* Use gnu_printf when supported (qemu uses standard format strings). */
43 # define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
44 # define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
45 # endif
46 #else
47 #define GCC_ATTR /**/
48 #define GCC_FMT_ATTR(n, m)
49 #endif
50
51 #endif /* COMPILER_H */