forked from mirrors/gotosocial
23 lines
892 B
Go
23 lines
892 B
Go
// Copyright 2009 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-GO file.
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package memory
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import (
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"syscall"
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"unsafe"
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)
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// https://cs.opensource.google/go/go/+/refs/tags/go1.17.8:src/syscall/syscall_linux_s390x.go;l=105-115
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// Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct.
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// mmap2 also requires arguments to be passed in a struct; it is currently not exposed in <asm/unistd.h>.
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func mmapSyscall(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
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mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)}
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r0, _, e1 := syscall.Syscall(syscall.SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0)
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xaddr = uintptr(r0)
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if e1 != 0 {
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err = e1
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}
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return
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}
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