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| author | David Crawshaw <crawshaw@golang.org> | 2016-08-25 21:58:45 -0400 |
|---|---|---|
| committer | David Crawshaw <crawshaw@golang.org> | 2016-09-16 14:49:13 +0000 |
| commit | eced6754c2f2ce98cb5bacbdbfcbbaa4a6a69d53 (patch) | |
| tree | 0450fbe9c27799556daef1148c816e3645c61ccc /src/runtime | |
| parent | 79167bbd9c71017e18836a3e5e40261b57012358 (diff) | |
| download | go-eced6754c2f2ce98cb5bacbdbfcbbaa4a6a69d53.tar.xz | |
cmd/link: -buildmode=plugin support for linux
This CL contains several linker changes to support creating plugins.
It collects the exported plugin symbols provided by the compiler and
includes them in the moduledata.
It treats a binary as being dynamically linked if it imports the plugin
package. This lets the dynamic linker de-duplicate symbols.
Change-Id: I099b6f38dda26306eba5c41dbe7862f5a5918d95
Reviewed-on: https://go-review.googlesource.com/27820
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/runtime')
| -rw-r--r-- | src/runtime/plugin.go | 13 | ||||
| -rw-r--r-- | src/runtime/symtab.go | 2 |
2 files changed, 15 insertions, 0 deletions
diff --git a/src/runtime/plugin.go b/src/runtime/plugin.go new file mode 100644 index 0000000000..f5f3aa2e5b --- /dev/null +++ b/src/runtime/plugin.go @@ -0,0 +1,13 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package runtime + +// A ptabEntry is generated by the compiler for each exported function +// and global variable in the main package of a plugin. It is used to +// initialize the plugin module's symbol map. +type ptabEntry struct { + name nameOff + typ typeOff +} diff --git a/src/runtime/symtab.go b/src/runtime/symtab.go index 7a37085fab..87b478a885 100644 --- a/src/runtime/symtab.go +++ b/src/runtime/symtab.go @@ -198,6 +198,8 @@ type moduledata struct { typelinks []int32 // offsets from types itablinks []*itab + ptab []ptabEntry + modulename string modulehashes []modulehash |