arm.h revision 1.1.1.2 
1/* ARM COFF support for BFD.
2   Copyright 1998, 1999, 2000, 2002, 2003, 2010, 2013
3   Free Software Foundation, Inc.
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 3 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 Foundation,
19   Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
20
21#define COFFARM 1
22
23#define L_LNNO_SIZE 2
24#define INCLUDE_COMDAT_FIELDS_IN_AUXENT
25#include "coff/external.h"
26
27/* Bits for f_flags:
28 	F_RELFLG	relocation info stripped from file
29 	F_EXEC		file is executable (no unresolved external references)
30 	F_LNNO		line numbers stripped from file
31 	F_LSYMS		local symbols stripped from file
32        F_INTERWORK     file supports switching between ARM and Thumb instruction sets
33        F_INTERWORK_SET the F_INTERWORK bit is valid
34 	F_APCS_FLOAT	code passes float arguments in float registers
35 	F_PIC		code is reentrant/position-independent
36 	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax)
37 	F_APCS_26	file uses 26 bit ARM Procedure Calling Standard
38 	F_APCS_SET	the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
39 	F_SOFT_FLOAT	code does not use floating point instructions.  */
40
41#define F_RELFLG	(0x0001)
42#define F_EXEC		(0x0002)
43#define F_LNNO		(0x0004)
44#define F_LSYMS		(0x0008)
45#define F_INTERWORK	(0x0010)
46#define F_INTERWORK_SET	(0x0020)
47#define F_APCS_FLOAT	(0x0040)
48#undef  F_AR16WR
49#define F_PIC		(0x0080)
50#define	F_AR32WR	(0x0100)
51#define F_APCS_26	(0x0400)
52#define F_APCS_SET	(0x0800)
53#define F_SOFT_FLOAT	(0x2000)
54#define F_VFP_FLOAT	(0x4000)
55
56/* Bits stored in flags field of the internal_f structure */
57
58#define F_INTERWORK	(0x0010)
59#define F_APCS_FLOAT	(0x0040)
60#define F_PIC		(0x0080)
61#define F_APCS26	(0x1000)
62#define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
63#define F_ARM_2		(0x0400)
64#define F_ARM_2a	(0x0800)
65#define F_ARM_3		(0x0c00)
66#define F_ARM_3M	(0x4000)
67#define F_ARM_4		(0x4400)
68#define F_ARM_4T	(0x4800)
69#define F_ARM_5		(0x4c00)
70
71/*
72  ARMMAGIC ought to encoded the procesor type,
73  but it is too late to change it now, instead
74  the flags field of the internal_f structure
75  is used as shown above.
76
77  XXX - NC 5/6/97.  */
78
79#define	ARMMAGIC	0xa00  /* I just made this up */
80
81#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))
82
83#define	ARMPEMAGIC	0x1c0
84#define	THUMBPEMAGIC	0x1c2
85#define	ARMV7PEMAGIC	0x1c4
86
87#undef  ARMBADMAG
88#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC) && ((x).f_magic != ARMPEMAGIC) && ((x).f_magic != THUMBPEMAGIC) && ((x).f_magic != ARMV7PEMAGIC))
89
90#define OMAGIC          0404    /* object files, eg as output */
91#define ZMAGIC          0413    /* demand load format, eg normal ld output */
92#define STMAGIC		0401	/* target shlib */
93#define SHMAGIC		0443	/* host   shlib */
94
95/* define some NT default values */
96/*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
97#define NT_SECTION_ALIGNMENT 0x1000
98#define NT_FILE_ALIGNMENT    0x200
99#define NT_DEF_RESERVE       0x100000
100#define NT_DEF_COMMIT        0x1000
101
102/* We use the .rdata section to hold read only data.  */
103#define _LIT	".rdata"
104
105/********************** RELOCATION DIRECTIVES **********************/
106#ifdef ARM_WINCE
107struct external_reloc
108{
109  char r_vaddr[4];
110  char r_symndx[4];
111  char r_type[2];
112};
113
114#define RELOC struct external_reloc
115#define RELSZ 10
116
117#else
118struct external_reloc
119{
120  char r_vaddr[4];
121  char r_symndx[4];
122  char r_type[2];
123  char r_offset[4];
124};
125
126#define RELOC struct external_reloc
127#define RELSZ 14
128#endif
129
130#define ARM_NOTE_SECTION ".note"
131