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https://github.com/golang/go
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519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
// Copyright 2014 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 runtime
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import "unsafe"
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type mts struct {
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tv_sec int64
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tv_nsec int64
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}
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type mscratch struct {
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v [6]uintptr
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}
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type mOS struct {
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waitsema uintptr // semaphore for parking on locks
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perrno *int32 // pointer to tls errno
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// these are here because they are too large to be on the stack
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// of low-level NOSPLIT functions.
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//LibCall libcall;
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ts mts
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scratch mscratch
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}
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type libcFunc uintptr
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var asmsysvicall6 libcFunc
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//go:nosplit
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func sysvicall0(fn *libcFunc) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 0
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libcall.args = uintptr(unsafe.Pointer(fn)) // it's unused but must be non-nil, otherwise crashes
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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//go:nosplit
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func sysvicall1(fn *libcFunc, a1 uintptr) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 1
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// TODO(rsc): Why is noescape necessary here and below?
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libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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//go:nosplit
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func sysvicall2(fn *libcFunc, a1, a2 uintptr) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 2
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libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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//go:nosplit
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func sysvicall3(fn *libcFunc, a1, a2, a3 uintptr) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 3
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libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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//go:nosplit
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func sysvicall4(fn *libcFunc, a1, a2, a3, a4 uintptr) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 4
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libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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//go:nosplit
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func sysvicall5(fn *libcFunc, a1, a2, a3, a4, a5 uintptr) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 5
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libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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//go:nosplit
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func sysvicall6(fn *libcFunc, a1, a2, a3, a4, a5, a6 uintptr) uintptr {
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var libcall libcall
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libcall.fn = uintptr(unsafe.Pointer(fn))
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libcall.n = 6
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libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
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asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(&libcall))
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return libcall.r1
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}
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