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cmd/cgo: split cgo_export into cgo_export_static and cgo_export_dynamic

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Also emit cgo_ldflag pragmas.

R=golang-dev, remyoudompheng, iant
CC=golang-dev
https://golang.org/cl/7530043
This commit is contained in:
Russ Cox 2013-03-06 16:57:14 -05:00
parent 56d1faa8b6
commit fb59aed60b
7 changed files with 65 additions and 23 deletions
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11
src/cmd/cgo/out.go
View file

@ -31,7 +31,12 @@ func (p *Package) writeDefs() {
fflg := creat(*objDir + "_cgo_flags")
for k, v := range p.CgoFlags {
fmt.Fprintf(fflg, "_CGO_%s=%s\n", k, v)
fmt.Fprintf(fflg, "_CGO_%s=%s\n", k, strings.Join(v, " "))
if k == "LDFLAGS" {
for _, arg := range v {
fmt.Fprintf(fc, "#pragma cgo_ldflag %q\n", arg)
}
}
}
fflg.Close()
@ -100,6 +105,7 @@ func (p *Package) writeDefs() {
fmt.Fprintf(fm, "extern char %s[];\n", n.C)
fmt.Fprintf(fm, "void *_cgohack_%s = %s;\n\n", n.C, n.C)
fmt.Fprintf(fc, "#pragma cgo_import_static %s\n", n.C)
fmt.Fprintf(fc, "extern byte *%s;\n", n.C)
cVars[n.C] = true
@ -651,8 +657,9 @@ func (p *Package) writeExports(fgo2, fc, fm *os.File) {
if fn.Recv != nil {
goname = "_cgoexpwrap" + cPrefix + "_" + fn.Recv.List[0].Names[0].Name + "_" + goname
}
fmt.Fprintf(fc, "#pragma cgo_export %s\n", goname)
fmt.Fprintf(fc, "#pragma cgo_export_dynamic %s\n", goname)
fmt.Fprintf(fc, "extern void ·%s();\n\n", goname)
fmt.Fprintf(fc, "#pragma cgo_export_static _cgoexp%s_%s\n", cPrefix, exp.ExpName)
fmt.Fprintf(fc, "#pragma textflag 7\n") // no split stack, so no use of m or g
fmt.Fprintf(fc, "void\n")
fmt.Fprintf(fc, "_cgoexp%s_%s(void *a, int32 n)\n", cPrefix, exp.ExpName)