From: Richard Henderson Date: Wed, 25 Sep 2019 21:48:41 +0000 (+0000) Subject: aarch64: Fix store-exclusive in load-operate LSE helpers X-Git-Tag: upstream/12.2.0~21647 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=88a51d68c4aaa61adb36a9cad6f25ef214bde853;p=platform%2Fupstream%2Fgcc.git aarch64: Fix store-exclusive in load-operate LSE helpers PR target/91834 * config/aarch64/lse.S (LDNM): Ensure STXR output does not overlap the inputs. From-SVN: r276133 --- diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 261ea7b..541a802 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,9 @@ +2019-09-25 Richard Henderson + + PR target/91834 + * config/aarch64/lse.S (LDNM): Ensure STXR output does not + overlap the inputs. + 2019-09-25 Shaokun Zhang * config/aarch64/sync-cache.c (__aarch64_sync_cache_range): Add support for diff --git a/libgcc/config/aarch64/lse.S b/libgcc/config/aarch64/lse.S index a5f6673..c797938 100644 --- a/libgcc/config/aarch64/lse.S +++ b/libgcc/config/aarch64/lse.S @@ -227,8 +227,8 @@ STARTFN NAME(LDNM) 8: mov s(tmp0), s(0) 0: LDXR s(0), [x1] OP s(tmp1), s(0), s(tmp0) - STXR w(tmp1), s(tmp1), [x1] - cbnz w(tmp1), 0b + STXR w(tmp2), s(tmp1), [x1] + cbnz w(tmp2), 0b ret ENDFN NAME(LDNM)