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Add support for Solaris libc atomic operations 

Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>
main
Alan Coopersmith 2010-01-16 19:28:50 -08:00
parent fe7b93fb49
commit b1ce1e6bfb
2 changed files with 21 additions and 0 deletions
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6
configure.ac
View File

@ -186,6 +186,12 @@ if test "x$INTEL" != "xno"; then
AC_CHECK_HEADER([atomic_ops.h], drm_cv_atomic_primitives="libatomic-ops")
fi
# atomic functions defined in <atomic.h> & libc on Solaris
if test "x$drm_cv_atomic_primitives" = "xnone"; then
AC_CHECK_FUNC([atomic_cas_uint],
drm_cv_atomic_primitives="Solaris")
fi
])
if test "x$drm_cv_atomic_primitives" = xIntel; then
AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1,

15
intel/intel_atomic.h
View File

@ -71,6 +71,21 @@ typedef struct {
#endif
#if defined(__sun) && !defined(HAS_ATOMIC_OPS) /* Solaris & OpenSolaris */
#include <sys/atomic.h>
#define HAS_ATOMIC_OPS 1
typedef struct { uint_t atomic; } atomic_t;
# define atomic_read(x) (int) ((x)->atomic)
# define atomic_set(x, val) ((x)->atomic = (uint_t)(val))
# define atomic_inc(x) (atomic_inc_uint (&(x)->atomic))
# define atomic_dec_and_test(x) (atomic_dec_uint_nv(&(x)->atomic) == 1)
# define atomic_cmpxchg(x, oldv, newv) atomic_cas_uint (&(x)->atomic, oldv, newv)
#endif
#if ! HAS_ATOMIC_OPS
#error libdrm-intel requires atomic operations, please define them for your CPU/compiler.
#endif