xtensa.h revision 130561 
1/* Xtensa ELF support for BFD.
2   Copyright 2003 Free Software Foundation, Inc.
3   Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
4
5   This file is part of BFD, the Binary File Descriptor library.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 2 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software
19   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
20   USA.  */
21
22/* This file holds definitions specific to the Xtensa ELF ABI.  */
23
24#ifndef _ELF_XTENSA_H
25#define _ELF_XTENSA_H
26
27#include "elf/reloc-macros.h"
28
29/* Relocations.  */
30START_RELOC_NUMBERS (elf_xtensa_reloc_type)
31     RELOC_NUMBER (R_XTENSA_NONE, 0)
32     RELOC_NUMBER (R_XTENSA_32, 1)
33     RELOC_NUMBER (R_XTENSA_RTLD, 2)
34     RELOC_NUMBER (R_XTENSA_GLOB_DAT, 3)
35     RELOC_NUMBER (R_XTENSA_JMP_SLOT, 4)
36     RELOC_NUMBER (R_XTENSA_RELATIVE, 5)
37     RELOC_NUMBER (R_XTENSA_PLT, 6)
38     RELOC_NUMBER (R_XTENSA_OP0, 8)
39     RELOC_NUMBER (R_XTENSA_OP1, 9)
40     RELOC_NUMBER (R_XTENSA_OP2, 10)
41     RELOC_NUMBER (R_XTENSA_ASM_EXPAND, 11)
42     RELOC_NUMBER (R_XTENSA_ASM_SIMPLIFY, 12)
43     RELOC_NUMBER (R_XTENSA_GNU_VTINHERIT, 15)
44     RELOC_NUMBER (R_XTENSA_GNU_VTENTRY, 16)
45END_RELOC_NUMBERS (R_XTENSA_max)
46
47/* Processor-specific flags for the ELF header e_flags field.  */
48
49/* Four-bit Xtensa machine type field.  */
50#define EF_XTENSA_MACH			0x0000000f
51
52/* Various CPU types.  */
53#define E_XTENSA_MACH			0x00000000
54
55/* Leave bits 0xf0 alone in case we ever have more than 16 cpu types.
56   Highly unlikely, but what the heck.  */
57
58#define EF_XTENSA_XT_INSN		0x00000100
59#define EF_XTENSA_XT_LIT		0x00000200
60
61
62/* Processor-specific dynamic array tags.  */
63
64/* Offset of the table that records the GOT location(s).  */
65#define DT_XTENSA_GOT_LOC_OFF		0x70000000
66
67/* Number of entries in the GOT location table.  */
68#define DT_XTENSA_GOT_LOC_SZ		0x70000001
69
70
71/* Definitions for instruction and literal property tables.  The
72   tables for ".gnu.linkonce.*" sections are placed in the following
73   sections:
74
75   instruction tables:	.gnu.linkonce.x.*
76   literal tables:	.gnu.linkonce.p.*
77*/
78
79#define XTENSA_INSN_SEC_NAME ".xt.insn"
80#define XTENSA_LIT_SEC_NAME  ".xt.lit"
81
82typedef struct property_table_entry_t
83{
84  bfd_vma address;
85  bfd_vma size;
86} property_table_entry;
87
88#endif /* _ELF_XTENSA_H */
89