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(unw_flush_cache): Only uses __sync_fetch_and_add() if

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HAVE_IA64INTRIN_H is defined.  Otherwise, do non-atomic
	increment (and issue compile-time warning about it).

(Logical change 1.46)
This commit is contained in:
hp.com!davidm 2003-02-14 03:09:27 +00:00
parent 3980b80e26
commit 7372c6cc43
1 changed files with 9 additions and 2 deletions
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11
src/ia64/flush_cache-ia64.c
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@ -1,5 +1,5 @@
/* libunwind - a platform-independent unwind library /* libunwind - a platform-independent unwind library
Copyright (C) 2002 Hewlett-Packard Co Copyright (C) 2002-2003 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com> Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind. This file is part of libunwind.
@ -23,7 +23,9 @@ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <ia64intrin.h> #ifdef HAVE_IA64INTRIN_H
# include <ia64intrin.h>
#endif
#include "unwind_i.h" #include "unwind_i.h"
@ -35,5 +37,10 @@ unw_flush_cache (unw_addr_space_t as, unw_word_t lo, unw_word_t hi)
unw_flush_cache() is allowed to flush more than the requested unw_flush_cache() is allowed to flush more than the requested
range. */ range. */
#ifdef HAVE_IA64INTRIN_H
__sync_fetch_and_add(&as->cache_generation, 1); __sync_fetch_and_add(&as->cache_generation, 1);
#else
# warning unw_flush_cache(): need a way to atomically increment an integer.
++as->cache_generation;
#endif
} }