Hi gc (2010.05.20_22:13:14_+0200) > Debian has been carrying a patch porting libgc to avr32 since August > 2009 [0], which as far as I know has never been forwarded to you.
Whoops, looks like that patch was incomplete [0]. Here's an updated version [1] from the Debian avr32 porter. SR [0]: http://buildd.debian-ports.org/fetch.php?pkg=libatomic-ops&arch=avr32&ver=7.2~alpha5%2Bcvs20100523-1&stamp=1275228178&file=log&as=raw [1]: http://files.brad-smith.co.uk/atomic-ops_avr32.h.txt -- Stefano Rivera http://tumbleweed.org.za/ H: +27 21 465 6908 C: +27 72 419 8559 UCT: x3127
Index: libatomic_ops/src/atomic_ops/sysdeps/gcc/avr32.h
===================================================================
RCS file: /cvsroot/bdwgc/bdwgc/libatomic_ops/src/atomic_ops/sysdeps/gcc/avr32.h,v
retrieving revision 1.1
diff -u -a -p -r1.1 avr32.h
--- libatomic_ops/src/atomic_ops/sysdeps/gcc/avr32.h 21 May 2010 16:01:36 -0000 1.1
+++ libatomic_ops/src/atomic_ops/sysdeps/gcc/avr32.h 30 May 2010 14:26:09 -0000
@@ -29,16 +29,39 @@
#include "../test_and_set_t_is_ao_t.h"
AO_INLINE AO_TS_VAL_t
-AO_test_and_set(volatile AO_TS_t *addr)
+AO_test_and_set_full(volatile AO_TS_t *addr)
{
- int ret;
+ register unsigned long int ret;
__asm__ __volatile__(
- "xchg %[old], %[mem], %[newv]"
- : [old] "=&r"(ret)
- : [mem] "r"(addr), [newv] "r"(1)
+ "xchg %[oldval], %[mem], %[newval]"
+ : [oldval] "=&r"(ret)
+ : [mem] "r"(addr), [newval] "r"(1)
: "memory");
return ret;
}
-#define AO_HAVE_test_and_set
+#define AO_HAVE_test_and_set_full
+
+AO_INLINE AO_TS_VAL_t
+AO_compare_and_swap(volatile AO_TS_t *addr, long int oldval,
+ long int newval)
+{
+ register long int ret;
+
+ __asm__ __volatile__(
+ "1: ssrf 5\n"
+ " ld.w %[res], %[mem]\n"
+ " eor %[res], %[oldval]\n"
+ " brne 2f\n"
+ " stcond %[mem], %[newval]\n"
+ " brne 1b\n"
+ "2:\n"
+ : [res] "=&r"(ret), [mem] "=m"(*addr)
+ : "m"(*addr), [newval] "r"(newval), [oldval] "r"(oldval)
+ : "cc", "memory");
+
+ return ret;
+}
+
+#define AO_HAVE_compare_and_swap
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