1/* ARM COFF support for BFD.
2   Copyright (C) 1998-2022 Free Software Foundation, Inc.
3
4   This file is part of BFD, the Binary File Descriptor library.
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 3 of the License, or
9   (at your option) any later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program; if not, write to the Free Software Foundation,
18   Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
19
20#define COFFARM 1
21
22#define L_LNNO_SIZE 2
23#define INCLUDE_COMDAT_FIELDS_IN_AUXENT
24#include "coff/external.h"
25
26/* Bits for f_flags:
27 	F_RELFLG	relocation info stripped from file
28 	F_EXEC		file is executable (no unresolved external references)
29 	F_LNNO		line numbers stripped from file
30 	F_LSYMS		local symbols stripped from file
31        F_INTERWORK     file supports switching between ARM and Thumb instruction sets
32        F_INTERWORK_SET the F_INTERWORK bit is valid
33 	F_APCS_FLOAT	code passes float arguments in float registers
34 	F_PIC		code is reentrant/position-independent
35 	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax)
36 	F_APCS_26	file uses 26 bit ARM Procedure Calling Standard
37 	F_APCS_SET	the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
38 	F_SOFT_FLOAT	code does not use floating point instructions.  */
39
40#define F_RELFLG	(0x0001)
41#define F_EXEC		(0x0002)
42#define F_LNNO		(0x0004)
43#define F_LSYMS		(0x0008)
44#define F_INTERWORK	(0x0010)
45#define F_INTERWORK_SET	(0x0020)
46#define F_APCS_FLOAT	(0x0040)
47#undef  F_AR16WR
48#define F_PIC		(0x0080)
49#define	F_AR32WR	(0x0100)
50#define F_APCS_26	(0x0400)
51#define F_APCS_SET	(0x0800)
52#define F_SOFT_FLOAT	(0x2000)
53#define F_VFP_FLOAT	(0x4000)
54
55/* Bits stored in flags field of the internal_f structure */
56
57#define F_INTERWORK	(0x0010)
58#define F_APCS_FLOAT	(0x0040)
59#define F_PIC		(0x0080)
60#define F_APCS26	(0x1000)
61#define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
62#define F_ARM_2		(0x0400)
63#define F_ARM_2a	(0x0800)
64#define F_ARM_3		(0x0c00)
65#define F_ARM_3M	(0x4000)
66#define F_ARM_4		(0x4400)
67#define F_ARM_4T	(0x4800)
68#define F_ARM_5		(0x4c00)
69
70/*
71  ARMMAGIC ought to encoded the procesor type,
72  but it is too late to change it now, instead
73  the flags field of the internal_f structure
74  is used as shown above.
75
76  XXX - NC 5/6/97.  */
77
78#define	ARMMAGIC	0xa00  /* I just made this up */
79
80#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))
81
82#define	ARMPEMAGIC	0x1c0
83#define	THUMBPEMAGIC	0x1c2
84#define	ARMV7PEMAGIC	0x1c4
85
86#undef  ARMBADMAG
87#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC) && ((x).f_magic != ARMPEMAGIC) && ((x).f_magic != THUMBPEMAGIC) && ((x).f_magic != ARMV7PEMAGIC))
88
89#define OMAGIC          0404    /* object files, eg as output */
90#define ZMAGIC          0413    /* demand load format, eg normal ld output */
91#define STMAGIC		0401	/* target shlib */
92#define SHMAGIC		0443	/* host   shlib */
93
94/* define some NT default values */
95/*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
96#define NT_SECTION_ALIGNMENT 0x1000
97#define NT_FILE_ALIGNMENT    0x200
98#define NT_DEF_RESERVE       0x100000
99#define NT_DEF_COMMIT        0x1000
100
101/* We use the .rdata section to hold read only data.  */
102#define _LIT	".rdata"
103
104/********************** RELOCATION DIRECTIVES **********************/
105#ifdef ARM_WINCE
106struct external_reloc
107{
108  char r_vaddr[4];
109  char r_symndx[4];
110  char r_type[2];
111};
112
113#define RELOC struct external_reloc
114#define RELSZ 10
115
116#else
117struct external_reloc
118{
119  char r_vaddr[4];
120  char r_symndx[4];
121  char r_type[2];
122  char r_offset[4];
123};
124
125#define RELOC struct external_reloc
126#define RELSZ 14
127#endif
128
129#define ARM_NOTE_SECTION ".note"
130