Change to -std=gnu11.
Replace QEMU_GENERIC with _Generic. Remove configure detect of _Static_assert. -----BEGIN PGP SIGNATURE----- iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmDJVLAdHHJpY2hhcmQu aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV8ZqggAvFjHlhJM/eAcRSVu kw7dZ6ntbQABMvovsTa+pl3oNpy+z6i54L+HRGmuioEc8jZWjcpT7dswLFuTxy6s eQST0zPfu18Vu6kVzxep9BLxsGdO1FItu5xgPG5Dm9KWzod7ZZ1hp1QzEmnRkFpx fgnpTDDcstm7jokMzigipijdOrnwnDBHuKIP/pQzevA07IuaoBhRs/KxCHbM/BTz vgm/aYdVk7HB1595fwGR7pHALs31A5hNTUv8wcNlwKeli9tmg+u3b4Pwgc4EQAn+ ZAC+hqU8d6XLLVBC+Xs8ko4aoygUbNxWGX9TJ5U+73gB8Hfh4MsPRoXeMFH+fah2 UNsPTA== =yFhD -----END PGP SIGNATURE----- Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-c11-20210615' into staging Change to -std=gnu11. Replace QEMU_GENERIC with _Generic. Remove configure detect of _Static_assert. # gpg: Signature made Wed 16 Jun 2021 02:32:32 BST # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full] # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * remotes/rth-gitlab/tags/pull-c11-20210615: configure: Remove probe for _Static_assert qemu/compiler: Remove QEMU_GENERIC include/qemu/lockable: Use _Generic instead of QEMU_GENERIC util: Use unique type for QemuRecMutex in thread-posix.h util: Pass file+line to qemu_rec_mutex_unlock_impl util: Use real functions for thread-posix QemuRecMutex softfloat: Use _Generic instead of QEMU_GENERIC configure: Use -std=gnu11 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
commit
18e53dff93
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@ -159,7 +159,7 @@ update_cxxflags() {
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# options which some versions of GCC's C++ compiler complain about
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# because they only make sense for C programs.
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QEMU_CXXFLAGS="$QEMU_CXXFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
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CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu99/-std=gnu++11/)
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CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
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for arg in $QEMU_CFLAGS; do
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case $arg in
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-Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
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@ -538,7 +538,7 @@ QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
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QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
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# Flags that are needed during configure but later taken care of by Meson
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CONFIGURE_CFLAGS="-std=gnu99 -Wall"
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CONFIGURE_CFLAGS="-std=gnu11 -Wall"
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CONFIGURE_LDFLAGS=
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@ -5090,20 +5090,6 @@ if compile_prog "" "" ; then
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have_sysmacros=yes
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fi
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##########################################
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# check for _Static_assert()
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have_static_assert=no
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cat > $TMPC << EOF
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_Static_assert(1, "success");
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int main(void) {
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return 0;
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}
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EOF
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if compile_prog "" "" ; then
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have_static_assert=yes
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fi
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##########################################
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# check for utmpx.h, it is missing e.g. on OpenBSD
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@ -6035,10 +6021,6 @@ if test "$have_sysmacros" = "yes" ; then
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echo "CONFIG_SYSMACROS=y" >> $config_host_mak
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fi
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if test "$have_static_assert" = "yes" ; then
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echo "CONFIG_STATIC_ASSERT=y" >> $config_host_mak
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fi
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if test "$have_utmpx" = "yes" ; then
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echo "HAVE_UTMPX=y" >> $config_host_mak
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fi
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@ -686,11 +686,13 @@ static float128 float128_pack_raw(const FloatParts128 *p)
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#include "softfloat-specialize.c.inc"
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#define PARTS_GENERIC_64_128(NAME, P) \
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QEMU_GENERIC(P, (FloatParts128 *, parts128_##NAME), parts64_##NAME)
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_Generic((P), FloatParts64 *: parts64_##NAME, \
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FloatParts128 *: parts128_##NAME)
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#define PARTS_GENERIC_64_128_256(NAME, P) \
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QEMU_GENERIC(P, (FloatParts256 *, parts256_##NAME), \
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(FloatParts128 *, parts128_##NAME), parts64_##NAME)
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_Generic((P), FloatParts64 *: parts64_##NAME, \
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FloatParts128 *: parts128_##NAME, \
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FloatParts256 *: parts256_##NAME)
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#define parts_default_nan(P, S) PARTS_GENERIC_64_128(default_nan, P)(P, S)
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#define parts_silence_nan(P, S) PARTS_GENERIC_64_128(silence_nan, P)(P, S)
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@ -892,11 +894,13 @@ static void parts128_log2(FloatParts128 *a, float_status *s, const FloatFmt *f);
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*/
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#define FRAC_GENERIC_64_128(NAME, P) \
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QEMU_GENERIC(P, (FloatParts128 *, frac128_##NAME), frac64_##NAME)
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_Generic((P), FloatParts64 *: frac64_##NAME, \
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FloatParts128 *: frac128_##NAME)
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#define FRAC_GENERIC_64_128_256(NAME, P) \
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QEMU_GENERIC(P, (FloatParts256 *, frac256_##NAME), \
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(FloatParts128 *, frac128_##NAME), frac64_##NAME)
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_Generic((P), FloatParts64 *: frac64_##NAME, \
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FloatParts128 *: frac128_##NAME, \
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FloatParts256 *: frac256_##NAME)
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static bool frac64_add(FloatParts64 *r, FloatParts64 *a, FloatParts64 *b)
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{
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|
|
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@ -72,18 +72,7 @@
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int:(x) ? -1 : 1; \
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}
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/* QEMU_BUILD_BUG_MSG() emits the message given if _Static_assert is
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* supported; otherwise, it will be omitted from the compiler error
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* message (but as it remains present in the source code, it can still
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* be useful when debugging). */
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#if defined(CONFIG_STATIC_ASSERT)
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#define QEMU_BUILD_BUG_MSG(x, msg) _Static_assert(!(x), msg)
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#elif defined(__COUNTER__)
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#define QEMU_BUILD_BUG_MSG(x, msg) typedef QEMU_BUILD_BUG_ON_STRUCT(x) \
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glue(qemu_build_bug_on__, __COUNTER__) __attribute__((unused))
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#else
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#define QEMU_BUILD_BUG_MSG(x, msg)
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#endif
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#define QEMU_BUILD_BUG_ON(x) QEMU_BUILD_BUG_MSG(x, "not expecting: " #x)
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@ -173,46 +162,6 @@
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#define QEMU_ALWAYS_INLINE
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#endif
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/* Implement C11 _Generic via GCC builtins. Example:
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*
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* QEMU_GENERIC(x, (float, sinf), (long double, sinl), sin) (x)
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*
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* The first argument is the discriminator. The last is the default value.
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* The middle ones are tuples in "(type, expansion)" format.
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*/
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/* First, find out the number of generic cases. */
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#define QEMU_GENERIC(x, ...) \
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QEMU_GENERIC_(typeof(x), __VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
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/* There will be extra arguments, but they are not used. */
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#define QEMU_GENERIC_(x, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, count, ...) \
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QEMU_GENERIC##count(x, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
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|
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/* Two more helper macros, this time to extract items from a parenthesized
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* list.
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*/
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#define QEMU_FIRST_(a, b) a
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#define QEMU_SECOND_(a, b) b
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/* ... and a final one for the common part of the "recursion". */
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#define QEMU_GENERIC_IF(x, type_then, else_) \
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__builtin_choose_expr(__builtin_types_compatible_p(x, \
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QEMU_FIRST_ type_then), \
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QEMU_SECOND_ type_then, else_)
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/* CPP poor man's "recursion". */
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#define QEMU_GENERIC1(x, a0, ...) (a0)
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#define QEMU_GENERIC2(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC1(x, __VA_ARGS__))
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#define QEMU_GENERIC3(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC2(x, __VA_ARGS__))
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#define QEMU_GENERIC4(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC3(x, __VA_ARGS__))
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#define QEMU_GENERIC5(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC4(x, __VA_ARGS__))
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#define QEMU_GENERIC6(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC5(x, __VA_ARGS__))
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#define QEMU_GENERIC7(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC6(x, __VA_ARGS__))
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#define QEMU_GENERIC8(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC7(x, __VA_ARGS__))
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#define QEMU_GENERIC9(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC8(x, __VA_ARGS__))
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#define QEMU_GENERIC10(x, a0, ...) QEMU_GENERIC_IF(x, a0, QEMU_GENERIC9(x, __VA_ARGS__))
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||||
|
||||
/**
|
||||
* qemu_build_not_reached()
|
||||
*
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||||
|
|
|
|||
|
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@ -24,79 +24,71 @@ struct QemuLockable {
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QemuLockUnlockFunc *unlock;
|
||||
};
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/* This function gives an error if an invalid, non-NULL pointer type is passed
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||||
* to QEMU_MAKE_LOCKABLE. For optimized builds, we can rely on dead-code elimination
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||||
* from the compiler, and give the errors already at link time.
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||||
*/
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||||
#if defined(__OPTIMIZE__) && !defined(__SANITIZE_ADDRESS__)
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void unknown_lock_type(void *);
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#else
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static inline void unknown_lock_type(void *unused)
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||||
{
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abort();
|
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}
|
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#endif
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static inline __attribute__((__always_inline__)) QemuLockable *
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qemu_make_lockable(void *x, QemuLockable *lockable)
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{
|
||||
/* We cannot test this in a macro, otherwise we get compiler
|
||||
/*
|
||||
* We cannot test this in a macro, otherwise we get compiler
|
||||
* warnings like "the address of 'm' will always evaluate as 'true'".
|
||||
*/
|
||||
return x ? lockable : NULL;
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}
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||||
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||||
/* Auxiliary macros to simplify QEMU_MAKE_LOCABLE. */
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#define QEMU_LOCK_FUNC(x) ((QemuLockUnlockFunc *) \
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QEMU_GENERIC(x, \
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(QemuMutex *, qemu_mutex_lock), \
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(QemuRecMutex *, qemu_rec_mutex_lock), \
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(CoMutex *, qemu_co_mutex_lock), \
|
||||
(QemuSpin *, qemu_spin_lock), \
|
||||
unknown_lock_type))
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||||
static inline __attribute__((__always_inline__)) QemuLockable *
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qemu_null_lockable(void *x)
|
||||
{
|
||||
if (x != NULL) {
|
||||
qemu_build_not_reached();
|
||||
}
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return NULL;
|
||||
}
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#define QEMU_UNLOCK_FUNC(x) ((QemuLockUnlockFunc *) \
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QEMU_GENERIC(x, \
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(QemuMutex *, qemu_mutex_unlock), \
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(QemuRecMutex *, qemu_rec_mutex_unlock), \
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(CoMutex *, qemu_co_mutex_unlock), \
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(QemuSpin *, qemu_spin_unlock), \
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unknown_lock_type))
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||||
|
||||
/* In C, compound literals have the lifetime of an automatic variable.
|
||||
/*
|
||||
* In C, compound literals have the lifetime of an automatic variable.
|
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* In C++ it would be different, but then C++ wouldn't need QemuLockable
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* either...
|
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*/
|
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#define QEMU_MAKE_LOCKABLE_(x) (&(QemuLockable) { \
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.object = (x), \
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.lock = QEMU_LOCK_FUNC(x), \
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.unlock = QEMU_UNLOCK_FUNC(x), \
|
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#define QML_OBJ_(x, name) (&(QemuLockable) { \
|
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.object = (x), \
|
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.lock = (QemuLockUnlockFunc *) qemu_ ## name ## _lock, \
|
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.unlock = (QemuLockUnlockFunc *) qemu_ ## name ## _unlock \
|
||||
})
|
||||
|
||||
/* QEMU_MAKE_LOCKABLE - Make a polymorphic QemuLockable
|
||||
/**
|
||||
* QEMU_MAKE_LOCKABLE - Make a polymorphic QemuLockable
|
||||
*
|
||||
* @x: a lock object (currently one of QemuMutex, QemuRecMutex, CoMutex, QemuSpin).
|
||||
* @x: a lock object (currently one of QemuMutex, QemuRecMutex,
|
||||
* CoMutex, QemuSpin).
|
||||
*
|
||||
* Returns a QemuLockable object that can be passed around
|
||||
* to a function that can operate with locks of any kind, or
|
||||
* NULL if @x is %NULL.
|
||||
*/
|
||||
#define QEMU_MAKE_LOCKABLE(x) \
|
||||
QEMU_GENERIC(x, \
|
||||
(QemuLockable *, (x)), \
|
||||
qemu_make_lockable((x), QEMU_MAKE_LOCKABLE_(x)))
|
||||
|
||||
/* QEMU_MAKE_LOCKABLE_NONNULL - Make a polymorphic QemuLockable
|
||||
*
|
||||
* @x: a lock object (currently one of QemuMutex, QemuRecMutex, CoMutex, QemuSpin).
|
||||
* Note the special case for void *, so that we may pass "NULL".
|
||||
*/
|
||||
#define QEMU_MAKE_LOCKABLE(x) \
|
||||
_Generic((x), QemuLockable *: (x), \
|
||||
void *: qemu_null_lockable(x), \
|
||||
QemuMutex *: qemu_make_lockable(x, QML_OBJ_(x, mutex)), \
|
||||
QemuRecMutex *: qemu_make_lockable(x, QML_OBJ_(x, rec_mutex)), \
|
||||
CoMutex *: qemu_make_lockable(x, QML_OBJ_(x, co_mutex)), \
|
||||
QemuSpin *: qemu_make_lockable(x, QML_OBJ_(x, spin)))
|
||||
|
||||
/**
|
||||
* QEMU_MAKE_LOCKABLE_NONNULL - Make a polymorphic QemuLockable
|
||||
*
|
||||
* @x: a lock object (currently one of QemuMutex, QemuRecMutex,
|
||||
* CoMutex, QemuSpin).
|
||||
*
|
||||
* Returns a QemuLockable object that can be passed around
|
||||
* to a function that can operate with locks of any kind.
|
||||
*/
|
||||
#define QEMU_MAKE_LOCKABLE_NONNULL(x) \
|
||||
QEMU_GENERIC(x, \
|
||||
(QemuLockable *, (x)), \
|
||||
QEMU_MAKE_LOCKABLE_(x))
|
||||
#define QEMU_MAKE_LOCKABLE_NONNULL(x) \
|
||||
_Generic((x), QemuLockable *: (x), \
|
||||
QemuMutex *: QML_OBJ_(x, mutex), \
|
||||
QemuRecMutex *: QML_OBJ_(x, rec_mutex), \
|
||||
CoMutex *: QML_OBJ_(x, co_mutex), \
|
||||
QemuSpin *: QML_OBJ_(x, spin))
|
||||
|
||||
static inline void qemu_lockable_lock(QemuLockable *x)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -4,12 +4,6 @@
|
|||
#include <pthread.h>
|
||||
#include <semaphore.h>
|
||||
|
||||
typedef QemuMutex QemuRecMutex;
|
||||
#define qemu_rec_mutex_destroy qemu_mutex_destroy
|
||||
#define qemu_rec_mutex_lock_impl qemu_mutex_lock_impl
|
||||
#define qemu_rec_mutex_trylock_impl qemu_mutex_trylock_impl
|
||||
#define qemu_rec_mutex_unlock qemu_mutex_unlock
|
||||
|
||||
struct QemuMutex {
|
||||
pthread_mutex_t lock;
|
||||
#ifdef CONFIG_DEBUG_MUTEX
|
||||
|
|
@ -19,6 +13,14 @@ struct QemuMutex {
|
|||
bool initialized;
|
||||
};
|
||||
|
||||
/*
|
||||
* QemuRecMutex cannot be a typedef of QemuMutex lest we have two
|
||||
* compatible cases in _Generic. See qemu/lockable.h.
|
||||
*/
|
||||
typedef struct QemuRecMutex {
|
||||
QemuMutex m;
|
||||
} QemuRecMutex;
|
||||
|
||||
struct QemuCond {
|
||||
pthread_cond_t cond;
|
||||
bool initialized;
|
||||
|
|
|
|||
|
|
@ -18,12 +18,6 @@ struct QemuRecMutex {
|
|||
bool initialized;
|
||||
};
|
||||
|
||||
void qemu_rec_mutex_destroy(QemuRecMutex *mutex);
|
||||
void qemu_rec_mutex_lock_impl(QemuRecMutex *mutex, const char *file, int line);
|
||||
int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file,
|
||||
int line);
|
||||
void qemu_rec_mutex_unlock(QemuRecMutex *mutex);
|
||||
|
||||
struct QemuCond {
|
||||
CONDITION_VARIABLE var;
|
||||
bool initialized;
|
||||
|
|
|
|||
|
|
@ -28,6 +28,12 @@ int qemu_mutex_trylock_impl(QemuMutex *mutex, const char *file, const int line);
|
|||
void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line);
|
||||
void qemu_mutex_unlock_impl(QemuMutex *mutex, const char *file, const int line);
|
||||
|
||||
void qemu_rec_mutex_init(QemuRecMutex *mutex);
|
||||
void qemu_rec_mutex_destroy(QemuRecMutex *mutex);
|
||||
void qemu_rec_mutex_lock_impl(QemuRecMutex *mutex, const char *file, int line);
|
||||
int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file, int line);
|
||||
void qemu_rec_mutex_unlock_impl(QemuRecMutex *mutex, const char *file, int line);
|
||||
|
||||
typedef void (*QemuMutexLockFunc)(QemuMutex *m, const char *f, int l);
|
||||
typedef int (*QemuMutexTrylockFunc)(QemuMutex *m, const char *f, int l);
|
||||
typedef void (*QemuRecMutexLockFunc)(QemuRecMutex *m, const char *f, int l);
|
||||
|
|
@ -104,6 +110,9 @@ extern QemuCondTimedWaitFunc qemu_cond_timedwait_func;
|
|||
#define qemu_mutex_unlock(mutex) \
|
||||
qemu_mutex_unlock_impl(mutex, __FILE__, __LINE__)
|
||||
|
||||
#define qemu_rec_mutex_unlock(mutex) \
|
||||
qemu_rec_mutex_unlock_impl(mutex, __FILE__, __LINE__)
|
||||
|
||||
static inline void (qemu_mutex_lock)(QemuMutex *mutex)
|
||||
{
|
||||
qemu_mutex_lock(mutex);
|
||||
|
|
@ -129,8 +138,10 @@ static inline int (qemu_rec_mutex_trylock)(QemuRecMutex *mutex)
|
|||
return qemu_rec_mutex_trylock(mutex);
|
||||
}
|
||||
|
||||
/* Prototypes for other functions are in thread-posix.h/thread-win32.h. */
|
||||
void qemu_rec_mutex_init(QemuRecMutex *mutex);
|
||||
static inline void (qemu_rec_mutex_unlock)(QemuRecMutex *mutex)
|
||||
{
|
||||
qemu_rec_mutex_unlock(mutex);
|
||||
}
|
||||
|
||||
void qemu_cond_init(QemuCond *cond);
|
||||
void qemu_cond_destroy(QemuCond *cond);
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
project('qemu', ['c'], meson_version: '>=0.55.0',
|
||||
default_options: ['warning_level=1', 'c_std=gnu99', 'cpp_std=gnu++11', 'b_colorout=auto'] +
|
||||
default_options: ['warning_level=1', 'c_std=gnu11', 'cpp_std=gnu++11', 'b_colorout=auto'] +
|
||||
(meson.version().version_compare('>=0.56.0') ? [ 'b_staticpic=false' ] : []),
|
||||
version: run_command('head', meson.source_root() / 'VERSION').stdout().strip())
|
||||
|
||||
|
|
|
|||
|
|
@ -116,12 +116,32 @@ void qemu_rec_mutex_init(QemuRecMutex *mutex)
|
|||
|
||||
pthread_mutexattr_init(&attr);
|
||||
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
|
||||
err = pthread_mutex_init(&mutex->lock, &attr);
|
||||
err = pthread_mutex_init(&mutex->m.lock, &attr);
|
||||
pthread_mutexattr_destroy(&attr);
|
||||
if (err) {
|
||||
error_exit(err, __func__);
|
||||
}
|
||||
mutex->initialized = true;
|
||||
mutex->m.initialized = true;
|
||||
}
|
||||
|
||||
void qemu_rec_mutex_destroy(QemuRecMutex *mutex)
|
||||
{
|
||||
qemu_mutex_destroy(&mutex->m);
|
||||
}
|
||||
|
||||
void qemu_rec_mutex_lock_impl(QemuRecMutex *mutex, const char *file, int line)
|
||||
{
|
||||
qemu_mutex_lock_impl(&mutex->m, file, line);
|
||||
}
|
||||
|
||||
int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file, int line)
|
||||
{
|
||||
return qemu_mutex_trylock_impl(&mutex->m, file, line);
|
||||
}
|
||||
|
||||
void qemu_rec_mutex_unlock_impl(QemuRecMutex *mutex, const char *file, int line)
|
||||
{
|
||||
qemu_mutex_unlock_impl(&mutex->m, file, line);
|
||||
}
|
||||
|
||||
void qemu_cond_init(QemuCond *cond)
|
||||
|
|
|
|||
|
|
@ -105,7 +105,7 @@ int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file, int line)
|
|||
return !TryEnterCriticalSection(&mutex->lock);
|
||||
}
|
||||
|
||||
void qemu_rec_mutex_unlock(QemuRecMutex *mutex)
|
||||
void qemu_rec_mutex_unlock_impl(QemuRecMutex *mutex, const char *file, int line)
|
||||
{
|
||||
assert(mutex->initialized);
|
||||
LeaveCriticalSection(&mutex->lock);
|
||||
|
|
|
|||
Loading…
Reference in New Issue