1 /* ARM COFF support for BFD. 2 Copyright (C) 1998-2014 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" 130
