| 1 | /* ARM COFF support for BFD. |
| 2 | Copyright (C) 1998-2020 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 |
| 106 | struct 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 |
| 117 | struct 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" |