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| author | Ian Lance Taylor <iant@golang.org> | 2019-04-05 11:42:37 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2019-10-21 14:07:34 +0000 |
| commit | b653c878b1ad8d1b4f8d7b04201d0cb0a4156ead (patch) | |
| tree | 3f4189ae0a4f5c61ae8fc0badf402d2016533289 /src/runtime/sys_openbsd_arm.s | |
| parent | 6917b3c839af615e22ef479b23983d186e578bd6 (diff) | |
| download | go-b653c878b1ad8d1b4f8d7b04201d0cb0a4156ead.tar.xz | |
runtime: change read and write to return negative errno value
The internal read and write functions used to return -1 on error;
change them to return a negative errno value instead.
This will be used by later CLs in this series.
For most targets this is a simplification, although for ones that call
into libc it is a complication.
Updates #27707
Change-Id: Id02bf9487f03e7e88e4f2b85e899e986738697ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/171823
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@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 16de1efd03..3736451ba2 100644 --- a/src/runtime/sys_openbsd_arm.s +++ b/src/runtime/sys_openbsd_arm.s @@ -55,7 +55,7 @@ TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0 MOVW n+8(FP), R2 // arg 3 - nbyte MOVW $3, R12 // sys_read SWI $0 - MOVW.CS $-1, R0 + SUB.CS $0, R0, R0 // caller expects negative errno MOVW R0, ret+12(FP) RET @@ -82,7 +82,7 @@ TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0 MOVW n+8(FP), R2 // arg 3 - nbyte MOVW $4, R12 // sys_write SWI $0 - MOVW.CS $-1, R0 + SUB.CS $0, R0, R0 // caller expects negative errno MOVW R0, ret+12(FP) RET |