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| author | Ian Lance Taylor <iant@golang.org> | 2017-10-14 08:46:50 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2017-10-16 17:15:39 +0000 |
| commit | 5ddd3d588c589ae644cadd2d8e5341669dae888e (patch) | |
| tree | eab9782878dbde71023a87ecc238753e3f9f4740 /src/runtime/sys_openbsd_arm.s | |
| parent | 001fe1d57a357225316d67f1516fde9e2c378bb0 (diff) | |
| download | go-5ddd3d588c589ae644cadd2d8e5341669dae888e.tar.gz go-5ddd3d588c589ae644cadd2d8e5341669dae888e.zip | |
runtime: fix use of STREX in various exitThread implementations
STREX does not permit using the same register for the value to store
and the place where the result is returned. Also the code was wrong
anyhow if the first store failed.
Fixes #22248
Change-Id: I96013497410058514ffcb771c76c86faa1ec559b
Reviewed-on: https://go-review.googlesource.com/70911
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Diffstat (limited to 'src/runtime/sys_openbsd_arm.s')
| -rw-r--r-- | src/runtime/sys_openbsd_arm.s | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/runtime/sys_openbsd_arm.s b/src/runtime/sys_openbsd_arm.s index c6e9e4ec17..0b77d121f4 100644 --- a/src/runtime/sys_openbsd_arm.s +++ b/src/runtime/sys_openbsd_arm.s @@ -26,10 +26,10 @@ TEXT runtime·exit(SB),NOSPLIT,$-4 TEXT runtime·exitThread(SB),NOSPLIT,$0-4 MOVW wait+0(FP), R0 // We're done using the stack. - MOVW $0, R1 + MOVW $0, R2 storeloop: LDREX (R0), R4 // loads R4 - STREX R1, (R0), R1 // stores R2 + STREX R2, (R0), R1 // stores R2 CMP $0, R1 BNE storeloop MOVW $0, R0 // arg 1 - notdead |