// loadsys loads the definitions for the low-level runtime and unsafe functions,
// so that the compiler can generate calls to them,
// but does not make the names "runtime" or "unsafe" visible as packages.
func loadsys() {
if Debug['A'] != 0 {
return
}
block = 1
iota_ = -1000000
incannedimport = 1
importpkg = Runtimepkg
parse_import(obj.Binitr(strings.NewReader(runtimeimport)), nil)
importpkg = unsafepkg
parse_import(obj.Binitr(strings.NewReader(unsafeimport)), nil)
importpkg = nil
incannedimport = 0
}
func dumpexport() {
if buildid != "" {
exportf("build id %q\n", buildid)
}
size := 0 // size of export section without enclosing markers
if forceNewExport || newexport != 0 {
// binary export
// The linker also looks for the $$ marker - use char after $$ to distinguish format.
exportf("\n$$B\n") // indicate binary format
const verifyExport = true // enable to check format changes
if verifyExport {
// save a copy of the export data
var copy bytes.Buffer
bcopy := obj.Binitw(©)
size = Export(bcopy, Debug_export != 0)
bcopy.Flush() // flushing to bytes.Buffer cannot fail
if n, err := bout.Write(copy.Bytes()); n != size || err != nil {
Fatalf("error writing export data: got %d bytes, want %d bytes, err = %v", n, size, err)
}
// export data must contain no '$' so that we can find the end by searching for "$$"
if bytes.IndexByte(copy.Bytes(), '$') >= 0 {
Fatalf("export data contains $")
}
// verify that we can read the copied export data back in
// (use empty package map to avoid collisions)
savedPkgMap := pkgMap
savedPkgs := pkgs
pkgMap = make(map[string]*Pkg)
pkgs = nil
importpkg = mkpkg("")
Import(obj.Binitr(©)) // must not die
importpkg = nil
pkgs = savedPkgs
pkgMap = savedPkgMap
} else {
size = Export(bout, Debug_export != 0)
}
exportf("\n$$\n")
} else {
// textual export
lno := lineno
exportf("\n$$\n") // indicate textual format
exportsize = 0
exportf("package %s", localpkg.Name)
if safemode != 0 {
exportf(" safe")
}
exportf("\n")
for _, p := range pkgs {
if p.Direct {
dumppkg(p)
}
}
// exportlist grows during iteration - cannot use range
for len(exportlist) > 0 {
n := exportlist[0]
exportlist = exportlist[1:]
lineno = n.Lineno
dumpsym(n.Sym)
}
size = exportsize
exportf("\n$$\n")
lineno = lno
}
if Debug_export != 0 {
fmt.Printf("export data size = %d bytes\n", size)
}
}