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cmd/cgo: mangle names before rewriting calls

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Move name mangling before rewriting calls rather than after.
This is in preparation for later changes.

Change-Id: I74bc351f4290dad7ebf6d0d361bb684087786053
Reviewed-on: https://go-review.googlesource.com/c/142881
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-10-16 18:18:40 -07:00
parent 5ddec24888
commit 19b264e7bf
1 changed files with 22 additions and 17 deletions
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39
src/cmd/cgo/gcc.go
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@ -188,6 +188,7 @@ func (p *Package) Translate(f *File) {
break
}
}
p.prepareNames(f)
if p.rewriteCalls(f) {
// Add `import _cgo_unsafe "unsafe"` after the package statement.
f.Edit.Insert(f.offset(f.AST.Name.End()), "; import _cgo_unsafe \"unsafe\"")
@ -679,6 +680,27 @@ func (p *Package) recordTypedefs1(dtype dwarf.Type, visited map[dwarf.Type]bool)
}
}
// prepareNames finalizes the Kind field of not-type names and sets
// the mangled name of all names.
func (p *Package) prepareNames(f *File) {
for _, n := range f.Name {
if n.Kind == "not-type" {
if n.Define == "" {
n.Kind = "var"
} else {
n.Kind = "macro"
n.FuncType = &FuncType{
Result: n.Type,
Go: &ast.FuncType{
Results: &ast.FieldList{List: []*ast.Field{{Type: n.Type.Go}}},
},
}
}
}
p.mangleName(n)
}
}
// mangleName does name mangling to translate names
// from the original Go source files to the names
// used in the final Go files generated by cgo.
@ -1130,24 +1152,7 @@ func (p *Package) rewriteRef(f *File) {
// code for them.
functions := make(map[string]bool)
// Assign mangled names.
for _, n := range f.Name {
if n.Kind == "not-type" {
if n.Define == "" {
n.Kind = "var"
} else {
n.Kind = "macro"
n.FuncType = &FuncType{
Result: n.Type,
Go: &ast.FuncType{
Results: &ast.FieldList{List: []*ast.Field{{Type: n.Type.Go}}},
},
}
}
}
if n.Mangle == "" {
p.mangleName(n)
}
if n.Kind == "func" {
functions[n.Go] = false
}