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syscall: add support for openbsd/arm64
Generated on OpenBSD 6.5. Updates #31656 Change-Id: I0a7ddeee42d982ecbc226e82dec983c63e6c836d Reviewed-on: https://go-review.googlesource.com/c/go/+/174120 Reviewed-by: Brad Fitzpatrick <[email protected]> Run-TryBot: Brad Fitzpatrick <[email protected]> TryBot-Result: Gobot Gobot <[email protected]>
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‎src/syscall/asm_openbsd_arm64.s

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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "textflag.h"
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// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
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TEXT ·Syscall(SB),NOSPLIT,$0-56
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BL runtime·entersyscall(SB)
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD $0, R3
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MOVD $0, R4
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MOVD $0, R5
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MOVD trap+0(FP), R8 // syscall number
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SVC
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+32(FP) // r1
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MOVD ZR, r2+40(FP) // r2
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MOVD R0, err+48(FP) // errno
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BL runtime·exitsyscall(SB)
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RET
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ok:
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MOVD R0, r1+32(FP) // r1
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MOVD R1, r2+40(FP) // r2
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MOVD ZR, err+48(FP) // errno
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·Syscall6(SB),NOSPLIT,$0-80
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BL runtime·entersyscall(SB)
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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MOVD trap+0(FP), R8 // syscall number
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SVC
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+56(FP) // r1
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MOVD ZR, r2+64(FP) // r2
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MOVD R0, err+72(FP) // errno
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BL runtime·exitsyscall(SB)
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RET
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ok:
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MOVD R0, r1+56(FP) // r1
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MOVD R1, r2+64(FP) // r2
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MOVD ZR, err+72(FP) // errno
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·Syscall9(SB),NOSPLIT,$0-104
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BL runtime·entersyscall(SB)
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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MOVD a7+56(FP), R6
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MOVD a8+64(FP), R7
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MOVD a9+72(FP), R8 // on stack
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MOVD R8, 8(RSP)
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MOVD trap+0(FP), R8 // syscall number
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SVC
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+80(FP) // r1
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MOVD ZR, r2+88(FP) // r2
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MOVD R0, err+96(FP) // errno
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BL runtime·exitsyscall(SB)
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RET
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ok:
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MOVD R0, r1+80(FP) // r1
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MOVD R1, r2+88(FP) // r2
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MOVD ZR, err+96(FP) // errno
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·RawSyscall(SB),NOSPLIT,$0-56
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD $0, R3
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MOVD $0, R4
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MOVD $0, R5
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MOVD trap+0(FP), R8 // syscall number
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SVC
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+32(FP) // r1
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MOVD ZR, r2+40(FP) // r2
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MOVD R0, err+48(FP) // errno
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RET
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ok:
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MOVD R0, r1+32(FP) // r1
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MOVD R1, r2+40(FP) // r2
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MOVD ZR, err+48(FP) // errno
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RET
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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MOVD trap+0(FP), R8 // syscall number
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SVC
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+56(FP) // r1
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MOVD ZR, r2+64(FP) // r2
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MOVD R0, err+72(FP) // errno
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RET
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ok:
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MOVD R0, r1+56(FP) // r1
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MOVD R1, r2+64(FP) // r2
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MOVD ZR, err+72(FP) // errno
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RET

‎src/syscall/mkall.sh

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# API consistent between platforms.
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mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
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;;
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openbsd_arm64)
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mkerrors="$mkerrors -m64"
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mksyscall="./mksyscall.pl -openbsd"
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mksysctl="./mksysctl_openbsd.pl"
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zsysctl="zsysctl_openbsd.go"
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mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"
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# Let the type of C char be signed to make the bare syscall
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# API consistent between platforms.
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mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
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;;
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plan9_386)
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mkerrors=
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mksyscall="./mksyscall.pl -l32 -plan9"

‎src/syscall/syscall_openbsd_arm64.go

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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package syscall
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func setTimespec(sec, nsec int64) Timespec {
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return Timespec{Sec: sec, Nsec: nsec}
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}
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func setTimeval(sec, usec int64) Timeval {
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return Timeval{Sec: sec, Usec: usec}
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}
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func SetKevent(k *Kevent_t, fd, mode, flags int) {
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k.Ident = uint64(fd)
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k.Filter = int16(mode)
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k.Flags = uint16(flags)
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}
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func (iov *Iovec) SetLen(length int) {
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iov.Len = uint64(length)
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}
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func (msghdr *Msghdr) SetControllen(length int) {
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msghdr.Controllen = uint32(length)
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}
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func (cmsg *Cmsghdr) SetLen(length int) {
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cmsg.Len = uint32(length)
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}
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// RTM_LOCK only exists in OpenBSD 6.3 and earlier.
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const RTM_LOCK = 0x8
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// SYS___SYSCTL only exists in OpenBSD 5.8 and earlier, when it was
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// was renamed to SYS_SYSCTL.
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const SYS___SYSCTL = SYS_SYSCTL

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