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37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
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// Copyright 2021 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 base
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import (
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"cmd/internal/obj"
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)
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var Ctxt *obj.Link
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// TODO(mdempsky): These should probably be obj.Link methods.
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// PkgLinksym returns the linker symbol for name within the given
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// package prefix. For user packages, prefix should be the package
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// path encoded with objabi.PathToPrefix.
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func PkgLinksym(prefix, name string, abi obj.ABI) *obj.LSym {
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if name == "_" {
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// TODO(mdempsky): Cleanup callers and Fatalf instead.
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return linksym(prefix, "_", abi)
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}
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return linksym(prefix, prefix+"."+name, abi)
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}
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// Linkname returns the linker symbol for the given name as it might
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// appear within a //go:linkname directive.
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func Linkname(name string, abi obj.ABI) *obj.LSym {
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return linksym("_", name, abi)
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}
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// linksym is an internal helper function for implementing the above
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// exported APIs.
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func linksym(pkg, name string, abi obj.ABI) *obj.LSym {
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return Ctxt.LookupABIInit(name, abi, func(r *obj.LSym) { r.Pkg = pkg })
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}
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