1 files changed, 91 insertions, 0 deletions
diff --git a/libgo/go/debug/plan9obj/plan9obj.go b/libgo/go/debug/plan9obj/plan9obj.go
new file mode 100644
index 00000000000..4e3b08f4164
--- /dev/null
+++ b/libgo/go/debug/plan9obj/plan9obj.go
@@ -0,0 +1,91 @@
+// Copyright 2014 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.
+
+/*
+ * Plan 9 a.out constants and data structures
+ */
+
+package plan9obj
+
+import (
+	"bytes"
+	"encoding/binary"
+)
+
+// Plan 9 Program header.
+type prog struct {
+	Magic uint32 /* magic number */
+	Text  uint32 /* size of text segment */
+	Data  uint32 /* size of initialized data */
+	Bss   uint32 /* size of uninitialized data */
+	Syms  uint32 /* size of symbol table */
+	Entry uint32 /* entry point */
+	Spsz  uint32 /* size of pc/sp offset table */
+	Pcsz  uint32 /* size of pc/line number table */
+}
+
+// Plan 9 symbol table entries.
+type sym struct {
+	value uint64
+	typ   byte
+	name  []byte
+}
+
+const (
+	hsize      = 4 * 8
+	_HDR_MAGIC = 0x00008000 /* header expansion */
+)
+
+func magic(f, b int) string {
+	buf := new(bytes.Buffer)
+	var i uint32 = uint32((f) | ((((4 * (b)) + 0) * (b)) + 7))
+	binary.Write(buf, binary.BigEndian, i)
+	return string(buf.Bytes())
+}
+
+var (
+	_A_MAGIC = magic(0, 8)           /* 68020 (retired) */
+	_I_MAGIC = magic(0, 11)          /* intel 386 */
+	_J_MAGIC = magic(0, 12)          /* intel 960 (retired) */
+	_K_MAGIC = magic(0, 13)          /* sparc */
+	_V_MAGIC = magic(0, 16)          /* mips 3000 BE */
+	_X_MAGIC = magic(0, 17)          /* att dsp 3210 (retired) */
+	_M_MAGIC = magic(0, 18)          /* mips 4000 BE */
+	_D_MAGIC = magic(0, 19)          /* amd 29000 (retired) */
+	_E_MAGIC = magic(0, 20)          /* arm */
+	_Q_MAGIC = magic(0, 21)          /* powerpc */
+	_N_MAGIC = magic(0, 22)          /* mips 4000 LE */
+	_L_MAGIC = magic(0, 23)          /* dec alpha (retired) */
+	_P_MAGIC = magic(0, 24)          /* mips 3000 LE */
+	_U_MAGIC = magic(0, 25)          /* sparc64 (retired) */
+	_S_MAGIC = magic(_HDR_MAGIC, 26) /* amd64 */
+	_T_MAGIC = magic(_HDR_MAGIC, 27) /* powerpc64 */
+	_R_MAGIC = magic(_HDR_MAGIC, 28) /* arm64 */
+)
+
+type ExecTable struct {
+	Magic string
+	Ptrsz int
+	Hsize uint32
+}
+
+var exectab = []ExecTable{
+	{_A_MAGIC, 4, hsize},
+	{_I_MAGIC, 4, hsize},
+	{_J_MAGIC, 4, hsize},
+	{_K_MAGIC, 4, hsize},
+	{_V_MAGIC, 4, hsize},
+	{_X_MAGIC, 4, hsize},
+	{_M_MAGIC, 4, hsize},
+	{_D_MAGIC, 4, hsize},
+	{_E_MAGIC, 4, hsize},
+	{_Q_MAGIC, 4, hsize},
+	{_N_MAGIC, 4, hsize},
+	{_L_MAGIC, 4, hsize},
+	{_P_MAGIC, 4, hsize},
+	{_U_MAGIC, 4, hsize},
+	{_S_MAGIC, 8, hsize + 8},
+	{_T_MAGIC, 8, hsize + 8},
+	{_R_MAGIC, 8, hsize + 8},
+}