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cmd/nm: print symbol sizes for windows pe executables
Fixes #6973 LGTM=r R=golang-codereviews, r CC=golang-codereviews https://golang.org/cl/88820043
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@ -9,6 +9,7 @@ package main
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import (
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"debug/pe"
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"os"
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"sort"
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)
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func peSymbols(f *os.File) []Sym {
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@ -18,6 +19,10 @@ func peSymbols(f *os.File) []Sym {
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return nil
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}
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// Build sorted list of addresses of all symbols.
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// We infer the size of a symbol by looking at where the next symbol begins.
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var addrs []uint64
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var imageBase uint64
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switch oh := p.OptionalHeader.(type) {
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case *pe.OptionalHeader32:
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@ -78,6 +83,15 @@ func peSymbols(f *os.File) []Sym {
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sym.Addr += imageBase + uint64(sect.VirtualAddress)
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}
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syms = append(syms, sym)
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addrs = append(addrs, sym.Addr)
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}
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sort.Sort(uint64s(addrs))
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for i := range syms {
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j := sort.Search(len(addrs), func(x int) bool { return addrs[x] > syms[i].Addr })
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if j < len(addrs) {
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syms[i].Size = int64(addrs[j] - syms[i].Addr)
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}
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}
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return syms
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@ -8,9 +8,13 @@ enum {
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CacheLineSize = 64,
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#ifdef GOOS_solaris
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RuntimeGogoBytes = 80,
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#else
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#ifdef GOOS_windows
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RuntimeGogoBytes = 80,
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#else
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RuntimeGogoBytes = 64,
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#endif
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#endif // Windows
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#endif // Solaris
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PhysPageSize = 4096,
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PCQuantum = 1
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};
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@ -95,10 +95,6 @@ func BenchmarkDeferMany(b *testing.B) {
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// The value reported will include the padding between runtime.gogo and the
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// next function in memory. That's fine.
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func TestRuntimeGogoBytes(t *testing.T) {
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// TODO(brainman): delete when issue 6973 is fixed.
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if GOOS == "windows" {
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t.Skip("skipping broken test on windows")
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}
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dir, err := ioutil.TempDir("", "go-build")
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if err != nil {
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t.Fatalf("failed to create temp directory: %v", err)
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