mirror of
https://github.com/golang/go
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9d968cb47b
Change-Id: I5917bea8bb35b0e725dcc56a68f3a70137cfc180 Reviewed-on: https://go-review.googlesource.com/9387 Reviewed-by: Ian Lance Taylor <iant@golang.org>
86 lines
2.5 KiB
Go
86 lines
2.5 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 libcFunc uintptr
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var asmsysvicall6 libcFunc
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//go:noescape
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func sigfwd(fn uintptr, sig uint32, info *siginfo, ctx unsafe.Pointer)
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//go:nosplit
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func sysvicall0(fn *libcFunc) uintptr {
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libcall := &getg().m.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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libcall := &getg().m.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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libcall := &getg().m.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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libcall := &getg().m.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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libcall := &getg().m.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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libcall := &getg().m.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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libcall := &getg().m.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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