runtime: correct assembly for openbsd/arm64
Correct the pipe and pipe2 implementations by using the correct RSP offsets,
used to store and return the file descriptor array.
Fix setNonblock by using the correct immediate value for O_NONBLOCK and
replace EOR (exclusive OR) with ORR.
Also correct the write1 implementation, which has a uintptr value for the fd
argument.
Change-Id: Ibca77af44b649e8bb330ca54f9c36a7a8b0f9cea
Reviewed-on: https://go-review.googlesource.com/c/go/+/212765
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
diff --git a/src/runtime/sys_openbsd_arm64.s b/src/runtime/sys_openbsd_arm64.s
index 8e1a5bc..839aa57 100644
--- a/src/runtime/sys_openbsd_arm64.s
+++ b/src/runtime/sys_openbsd_arm64.s
@@ -65,7 +65,7 @@
// func pipe() (r, w int32, errno int32)
TEXT runtime·pipe(SB),NOSPLIT|NOFRAME,$0-12
- MOVD RSP, R0
+ MOVD $r+0(FP), R0
MOVW $0, R1
MOVD $101, R8 // sys_pipe2
SVC
@@ -76,7 +76,7 @@
// func pipe2(flags int32) (r, w int32, errno int32)
TEXT runtime·pipe2(SB),NOSPLIT|NOFRAME,$0-20
- ADD $8, RSP, R0
+ MOVD $r+8(FP), R0
MOVW flags+0(FP), R1
MOVD $101, R8 // sys_pipe2
SVC
@@ -86,7 +86,7 @@
RET
TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0
- MOVW fd+0(FP), R0 // arg 1 - fd
+ MOVD fd+0(FP), R0 // arg 1 - fd
MOVD p+8(FP), R1 // arg 2 - buf
MOVW n+16(FP), R2 // arg 3 - nbyte
MOVD $4, R8 // sys_write
@@ -428,8 +428,8 @@
MOVD $0, R2 // arg 3
MOVD $92, R8 // sys_fcntl
SVC
- MOVD $0x800, R2 // O_NONBLOCK
- EOR R0, R2 // arg 3 - flags
+ MOVD $4, R2 // O_NONBLOCK
+ ORR R0, R2 // arg 3 - flags
MOVW fd+0(FP), R0 // arg 1 - fd
MOVD $4, R1 // arg 2 - cmd (F_SETFL)
MOVD $92, R8 // sys_fcntl
