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RE: [patch] use of atomic builtins for arm-linux-eabi in boehm-gc
- From: "Richard Earnshaw" <rearnsha at arm dot com>
- To: "'Matthias Klose'" <doko at ubuntu dot com>, "GCC Patches" <gcc-patches at gcc dot gnu dot org>, "GCJ-patches" <java-patches at gcc dot gnu dot org>
- Date: Wed, 9 Dec 2009 10:16:33 -0000
- Subject: RE: [patch] use of atomic builtins for arm-linux-eabi in boehm-gc
- References: <4B1F7573.8060406@ubuntu.com>
> Current trunk fails to build on arm-linux-gnueabi in boehm-gc, when
> configured
> --with-mode=thumb:
>
> /tmp/ccVpqOWm.s: Assembler messages:
> /tmp/ccVpqOWm.s:1160: Error: selected processor does not support `swp
> r3,r3,[r2]'
> /tmp/ccVpqOWm.s:2472: Error: selected processor does not support `swp
> r3,r3,[r2]'
> /tmp/ccVpqOWm.s:3232: Error: selected processor does not support `swp
> r3,r3,[r2]'
> make[5]: *** [alloc.lo] Error 1
>
> arm-linux-gnueabi now provides the atomic builtins; use them
> unconditionally (as
> libjava does).
>
> Ok for the trunk, if testing succeeds? The build on trunk configured
> with
> --with-mode=thumb fails for other reasons (PR42093), currently testing
> the patch
> for the 4.4 branch.
2009-12-09 Matthias Klose <doko@ubuntu.com>
* include/private/gc_locks.h: For __ARM_EABI__ define
GC_test_and_set GC_clear to use the atomic builtins.
OK for trunk once testing is complete.
Please also notify the upstream maintainer of boehm-gc, or this patch may
get lost in a future merge.
R.