modernc.org/memory@v1.8.0/mmap_linux_64.go (about)

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE-GO file.
     4  
     5  //go:build linux && (amd64 || arm64 || mips64 || mips64le || riscv64 || ppc64le || loong64)
     6  // +build linux
     7  // +build amd64 arm64 mips64 mips64le riscv64 ppc64le loong64
     8  
     9  package memory
    10  
    11  import (
    12  	"syscall"
    13  )
    14  
    15  // Function syscall.mmap is same for linux/amd64, linux/arm64, linux/mips64,
    16  // linux/mips64le and linux/riscv64.
    17  
    18  // https://cs.opensource.google/go/go/+/refs/tags/go1.17.8:src/syscall/zsyscall_linux_amd64.go;l=1575-1584
    19  func mmapSyscall(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
    20  	r0, _, e1 := syscall.Syscall6(syscall.SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset))
    21  	xaddr = uintptr(r0)
    22  	if e1 != 0 {
    23  		err = e1
    24  	}
    25  	return
    26  }