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Cherry Mui
a76c4d0a00
In Go 1.17 we will introduce a register-based ABI on some platforms, as well as ABI wrappers to bridge the ABIs. For Darwin syscall wrappers, it needs to be called directly, instead of through wrappers. Currently, it is written as that the syscall functions are defined in assembly and their addresses are taken from Go using funcPC. In Go 1.17 this will result in the address of the ABI wrapper, which is undesired. In the syscall package in the standard library we changed to use a compiler intrinsic internal/abi.FuncPCABI0 to take the address of the syscall function. But that is not available to this repo and not available in older versions of Go. Here we take a different approach: taking the address directly from assembly. This also ensures we get the address of the defined syscall function, not the ABI wrapper. Updates golang/go#45702. Change-Id: Ia7480d0fb0ca4fb9bf2f36d2deb1e3e5e4eb8284 Reviewed-on: https://go-review.googlesource.com/c/sys/+/317894 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
41 lines
1.0 KiB
Go
41 lines
1.0 KiB
Go
// go run mksyscall.go -tags darwin,amd64,go1.13 syscall_darwin.1_13.go
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// Code generated by the command above; see README.md. DO NOT EDIT.
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//go:build darwin && amd64 && go1.13
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// +build darwin,amd64,go1.13
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package unix
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import (
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"syscall"
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"unsafe"
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)
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var _ syscall.Errno
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// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
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func closedir(dir uintptr) (err error) {
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_, _, e1 := syscall_syscall(libc_closedir_trampoline_addr, uintptr(dir), 0, 0)
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if e1 != 0 {
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err = errnoErr(e1)
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}
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return
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}
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var libc_closedir_trampoline_addr uintptr
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//go:cgo_import_dynamic libc_closedir closedir "/usr/lib/libSystem.B.dylib"
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// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
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func readdir_r(dir uintptr, entry *Dirent, result **Dirent) (res Errno) {
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r0, _, _ := syscall_syscall(libc_readdir_r_trampoline_addr, uintptr(dir), uintptr(unsafe.Pointer(entry)), uintptr(unsafe.Pointer(result)))
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res = Errno(r0)
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return
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}
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var libc_readdir_r_trampoline_addr uintptr
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//go:cgo_import_dynamic libc_readdir_r readdir_r "/usr/lib/libSystem.B.dylib"
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