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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_linux_mipsx.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_linux_mipsx.s')
| -rw-r--r-- | src/runtime/sys_linux_mipsx.s | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/runtime/sys_linux_mipsx.s b/src/runtime/sys_linux_mipsx.s index 77f932f50a..3c405c264e 100644 --- a/src/runtime/sys_linux_mipsx.s +++ b/src/runtime/sys_linux_mipsx.s @@ -95,7 +95,7 @@ TEXT runtime·write1(SB),NOSPLIT,$0-16 MOVW $SYS_write, R2 SYSCALL BEQ R7, 2(PC) - MOVW $-1, R2 + SUBU R2, R0, R2 // caller expects negative errno MOVW R2, ret+12(FP) RET @@ -106,7 +106,7 @@ TEXT runtime·read(SB),NOSPLIT,$0-16 MOVW $SYS_read, R2 SYSCALL BEQ R7, 2(PC) - MOVW $-1, R2 + SUBU R2, R0, R2 // caller expects negative errno MOVW R2, ret+12(FP) RET |