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// 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},
}
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