86d1e36f29
This should work on all byte addressable host systems using GCC/clang to build. The QEMU slirp code has been pried out of QEMU and stubs have been created to solve where the current slirp is entangled with the QEMU code. Ths slirp/simh directory contains all the necessary include and glue files to make this useful. Everything in the slirp directory is unmodified QEMU code.
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/* public domain */
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#ifndef COMPILER_H
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#define COMPILER_H
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#include "config-host.h"
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/*----------------------------------------------------------------------------
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| The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler.
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| The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h.
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*----------------------------------------------------------------------------*/
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#if defined(__GNUC__) && defined(__GNUC_MINOR__)
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# define QEMU_GNUC_PREREQ(maj, min) \
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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#else
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# define QEMU_GNUC_PREREQ(maj, min) 0
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#endif
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#if defined(__GNUC__)
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#define QEMU_NORETURN __attribute__ ((__noreturn__))
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#else
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#define QEMU_NORETURN
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#endif
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#if QEMU_GNUC_PREREQ(3, 4)
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#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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#else
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#define QEMU_WARN_UNUSED_RESULT
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#endif
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#if QEMU_GNUC_PREREQ(4, 0)
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#define QEMU_SENTINEL __attribute__((sentinel))
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#else
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#define QEMU_SENTINEL
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#endif
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#if QEMU_GNUC_PREREQ(4, 3)
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#define QEMU_ARTIFICIAL __attribute__((always_inline, artificial))
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#else
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#define QEMU_ARTIFICIAL
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#endif
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#ifdef _MSC_VER
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# define PACKED_BEGIN __pragma( pack(push, 1) )
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# define PACKED_END __pragma( pack(pop) )
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# define QEMU_PACKED
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#else
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# define PACKED_BEGIN
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#if defined(_WIN32)
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# define PACKED_END __attribute__((gcc_struct, packed))
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# define QEMU_PACKED __attribute__((gcc_struct, packed))
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#else
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# define PACKED_END __attribute__((packed))
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# define QEMU_PACKED __attribute__((packed))
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#endif
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#endif
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#ifndef glue
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#define xglue(x, y) x ## y
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#define glue(x, y) xglue(x, y)
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#define stringify(s) tostring(s)
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#define tostring(s) #s
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#endif
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#ifndef likely
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#if __GNUC__ < 3
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#define __builtin_expect(x, n) (x)
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#endif
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#endif
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#ifndef container_of
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#define container_of(ptr, type, member) \
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((type *) ((char *)(ptr) - offsetof(type, member)))
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#endif
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/* Convert from a base type to a parent type, with compile time checking. */
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#ifdef __GNUC__
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#define DO_UPCAST(type, field, dev) ( __extension__ ( { \
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char __attribute__((unused)) offset_must_be_zero[ \
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-offsetof(type, field)]; \
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container_of(dev, type, field);}))
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#else
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#define DO_UPCAST(type, field, dev) container_of(dev, type, field)
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#endif
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#define typeof_field(type, field) typeof(((type *)0)->field)
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#define type_check(t1,t2) ((t1*)0 - (t2*)0)
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#ifndef always_inline
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#if !((__GNUC__ < 3) || defined(__APPLE__))
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#ifdef __OPTIMIZE__
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#undef inline
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#define inline __attribute__ (( always_inline )) __inline__
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#endif
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#endif
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#else
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#undef inline
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#define inline always_inline
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#endif
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#ifdef _MSC_VER
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#undef inline
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#define inline __inline
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#endif
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#define QEMU_BUILD_BUG_ON(x) \
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typedef char glue(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused));
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#if defined __GNUC__
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# if !QEMU_GNUC_PREREQ(4, 4)
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/* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
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# define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
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# else
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/* Use gnu_printf when supported (qemu uses standard format strings). */
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# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
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# if defined(_WIN32)
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/* Map __printf__ to __gnu_printf__ because we want standard format strings
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* even when MinGW or GLib include files use __printf__. */
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# define __printf__ __gnu_printf__
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# endif
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# endif
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#else
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#define GCC_FMT_ATTR(n, m)
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#endif
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#endif /* COMPILER_H */
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