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 107 struct 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 118 struct 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