[444] | 1 | /* COFF information for TI COFF support. Definitions in this file should be |
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| 2 | customized in a target-specific file, and then this file included (see |
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| 3 | tic54x.h for an example). |
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| 4 | |
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| 5 | Copyright 2000, 2001, 2002, 2003, 2005, 2008, 2009, 2010 |
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| 6 | Free Software Foundation, Inc. |
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| 7 | |
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| 8 | This program is free software; you can redistribute it and/or modify |
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| 9 | it under the terms of the GNU General Public License as published by |
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| 10 | the Free Software Foundation; either version 3 of the License, or |
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| 11 | (at your option) any later version. |
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| 12 | |
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| 13 | This program is distributed in the hope that it will be useful, |
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | GNU General Public License for more details. |
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| 17 | |
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| 18 | You should have received a copy of the GNU General Public License |
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| 19 | along with this program; if not, write to the Free Software |
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| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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| 21 | MA 02110-1301, USA. */ |
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| 22 | |
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| 23 | #ifndef COFF_TI_H |
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| 24 | #define COFF_TI_H |
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| 25 | |
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| 26 | /* Note "coff/external.h is not used because TI adds extra fields to the structures. */ |
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| 27 | |
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| 28 | /********************** FILE HEADER **********************/ |
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| 29 | |
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| 30 | struct external_filehdr |
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| 31 | { |
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| 32 | char f_magic[2]; /* magic number */ |
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| 33 | char f_nscns[2]; /* number of sections */ |
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| 34 | char f_timdat[4]; /* time & date stamp */ |
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| 35 | char f_symptr[4]; /* file pointer to symtab */ |
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| 36 | char f_nsyms[4]; /* number of symtab entries */ |
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| 37 | char f_opthdr[2]; /* sizeof(optional hdr) */ |
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| 38 | char f_flags[2]; /* flags */ |
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| 39 | char f_target_id[2]; /* magic no. (TI COFF-specific) */ |
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| 40 | }; |
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| 41 | |
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| 42 | /* COFF0 has magic number in f_magic, and omits f_target_id from the file |
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| 43 | header; for later versions, f_magic is 0xC1 for COFF1 and 0xC2 for COFF2 |
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| 44 | and the target-specific magic number is found in f_target_id */ |
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| 45 | |
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| 46 | #define TICOFF0MAGIC TI_TARGET_ID |
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| 47 | #define TICOFF1MAGIC 0x00C1 |
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| 48 | #define TICOFF2MAGIC 0x00C2 |
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| 49 | #define TICOFF_AOUT_MAGIC 0x0108 /* magic number in optional header */ |
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| 50 | #define TICOFF 1 /* customize coffcode.h */ |
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| 51 | |
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| 52 | /* The target_id field changes depending on the particular CPU target */ |
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| 53 | /* for COFF0, the target id appeared in f_magic, where COFFX magic is now */ |
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| 54 | #ifndef TI_TARGET_ID |
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| 55 | #error "TI_TARGET_ID needs to be defined for your CPU" |
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| 56 | #endif |
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| 57 | |
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| 58 | /* Which bfd_arch to use... */ |
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| 59 | #ifndef TICOFF_TARGET_ARCH |
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| 60 | #error "TICOFF_TARGET_ARCH needs to be defined for your CPU" |
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| 61 | #endif |
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| 62 | |
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| 63 | #ifndef TICOFF_TARGET_MACHINE_GET |
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| 64 | #define TICOFF_TARGET_MACHINE_GET(FLAGS) 0 |
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| 65 | #endif |
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| 66 | |
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| 67 | #ifndef TICOFF_TARGET_MACHINE_SET |
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| 68 | #define TICOFF_TARGET_MACHINE_SET(FLAGSP, MACHINE) |
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| 69 | #endif |
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| 70 | |
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| 71 | /* Default to COFF2 for file output */ |
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| 72 | #ifndef TICOFF_DEFAULT_MAGIC |
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| 73 | #define TICOFF_DEFAULT_MAGIC TICOFF2MAGIC |
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| 74 | #endif |
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| 75 | |
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| 76 | /* This value is made available in the rare case where a bfd is unavailable */ |
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| 77 | #ifndef OCTETS_PER_BYTE_POWER |
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| 78 | #error "OCTETS_PER_BYTE_POWER not defined for this CPU" |
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| 79 | #else |
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| 80 | #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER) |
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| 81 | #endif |
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| 82 | |
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| 83 | /* default alignment is on a byte (not octet!) boundary */ |
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| 84 | #ifndef COFF_DEFAULT_SECTION_ALIGNMENT_POWER |
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| 85 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0 |
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| 86 | #endif |
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| 87 | |
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| 88 | /* TI COFF encodes the section alignment in the section header flags */ |
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| 89 | #define COFF_ALIGN_IN_SECTION_HEADER 1 |
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| 90 | #define COFF_ALIGN_IN_S_FLAGS 1 |
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| 91 | /* requires a power-of-two argument */ |
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| 92 | #define COFF_ENCODE_ALIGNMENT(S,X) ((S).s_flags |= (((unsigned)(X)&0xF)<<8)) |
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| 93 | /* result is a power of two */ |
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| 94 | #define COFF_DECODE_ALIGNMENT(X) (((X)>>8)&0xF) |
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| 95 | |
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| 96 | #define COFF0_P(ABFD) (bfd_coff_filhsz(ABFD) == FILHSZ_V0) |
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| 97 | #define COFF2_P(ABFD) (bfd_coff_scnhsz(ABFD) != SCNHSZ_V01) |
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| 98 | |
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| 99 | #define COFF0_BADMAG(x) ((x).f_magic != TICOFF0MAGIC) |
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| 100 | #define COFF1_BADMAG(x) ((x).f_magic != TICOFF1MAGIC || (x).f_target_id != TI_TARGET_ID) |
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| 101 | #define COFF2_BADMAG(x) ((x).f_magic != TICOFF2MAGIC || (x).f_target_id != TI_TARGET_ID) |
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| 102 | |
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| 103 | /* we need to read/write an extra field in the coff file header */ |
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| 104 | #ifndef COFF_ADJUST_FILEHDR_IN_POST |
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| 105 | #define COFF_ADJUST_FILEHDR_IN_POST(abfd, src, dst) \ |
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| 106 | do \ |
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| 107 | { \ |
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| 108 | if (!COFF0_P (abfd)) \ |
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| 109 | ((struct internal_filehdr *)(dst))->f_target_id = \ |
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| 110 | H_GET_16 (abfd, ((FILHDR *)(src))->f_target_id); \ |
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| 111 | } \ |
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| 112 | while (0) |
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| 113 | #endif |
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| 114 | |
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| 115 | #ifndef COFF_ADJUST_FILEHDR_OUT_POST |
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| 116 | #define COFF_ADJUST_FILEHDR_OUT_POST(abfd, src, dst) \ |
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| 117 | do \ |
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| 118 | { \ |
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| 119 | if (!COFF0_P (abfd)) \ |
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| 120 | H_PUT_16 (abfd, ((struct internal_filehdr *)(src))->f_target_id, \ |
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| 121 | ((FILHDR *)(dst))->f_target_id); \ |
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| 122 | } \ |
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| 123 | while (0) |
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| 124 | #endif |
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| 125 | |
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| 126 | #define FILHDR struct external_filehdr |
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| 127 | #define FILHSZ 22 |
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| 128 | #define FILHSZ_V0 20 /* COFF0 omits target_id field */ |
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| 129 | |
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| 130 | /* File header flags */ |
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| 131 | #define F_RELFLG (0x0001) |
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| 132 | #define F_EXEC (0x0002) |
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| 133 | #define F_LNNO (0x0004) |
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| 134 | #define F_VERS (0x0010) /* TMS320C4x code */ |
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| 135 | /* F_LSYMS needs to be redefined in your source file */ |
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| 136 | #define F_LSYMS_TICOFF (0x0010) /* normal COFF is 0x8 */ |
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| 137 | |
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| 138 | #define F_10 0x00 /* file built for TMS320C1x devices */ |
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| 139 | #define F_20 0x10 /* file built for TMS320C2x devices */ |
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| 140 | #define F_25 0x20 /* file built for TMS320C2x/C5x devices */ |
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| 141 | #define F_LENDIAN 0x0100 /* 16 bits/word, LSB first */ |
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| 142 | #define F_SYMMERGE 0x1000 /* duplicate symbols were removed */ |
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| 143 | |
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| 144 | /********************** OPTIONAL HEADER **********************/ |
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| 145 | |
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| 146 | |
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| 147 | typedef struct |
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| 148 | { |
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| 149 | char magic[2]; /* type of file (0x108) */ |
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| 150 | char vstamp[2]; /* version stamp */ |
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| 151 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ |
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| 152 | char dsize[4]; /* initialized data " " */ |
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| 153 | char bsize[4]; /* uninitialized data " " */ |
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| 154 | char entry[4]; /* entry pt. */ |
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| 155 | char text_start[4]; /* base of text used for this file */ |
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| 156 | char data_start[4]; /* base of data used for this file */ |
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| 157 | } |
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| 158 | AOUTHDR; |
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| 159 | |
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| 160 | |
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| 161 | #define AOUTHDRSZ 28 |
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| 162 | #define AOUTSZ 28 |
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| 163 | |
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| 164 | |
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| 165 | /********************** SECTION HEADER **********************/ |
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| 166 | /* COFF0, COFF1 */ |
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| 167 | struct external_scnhdr_v01 { |
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| 168 | char s_name[8]; /* section name */ |
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| 169 | char s_paddr[4]; /* physical address, aliased s_nlib */ |
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| 170 | char s_vaddr[4]; /* virtual address */ |
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| 171 | char s_size[4]; /* section size (in WORDS) */ |
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| 172 | char s_scnptr[4]; /* file ptr to raw data for section */ |
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| 173 | char s_relptr[4]; /* file ptr to relocation */ |
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| 174 | char s_lnnoptr[4]; /* file ptr to line numbers */ |
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| 175 | char s_nreloc[2]; /* number of relocation entries */ |
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| 176 | char s_nlnno[2]; /* number of line number entries*/ |
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| 177 | char s_flags[2]; /* flags */ |
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| 178 | char s_reserved[1]; /* reserved */ |
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| 179 | char s_page[1]; /* section page number (LOAD) */ |
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| 180 | }; |
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| 181 | |
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| 182 | /* COFF2 */ |
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| 183 | struct external_scnhdr { |
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| 184 | char s_name[8]; /* section name */ |
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| 185 | char s_paddr[4]; /* physical address, aliased s_nlib */ |
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| 186 | char s_vaddr[4]; /* virtual address */ |
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| 187 | char s_size[4]; /* section size (in WORDS) */ |
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| 188 | char s_scnptr[4]; /* file ptr to raw data for section */ |
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| 189 | char s_relptr[4]; /* file ptr to relocation */ |
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| 190 | char s_lnnoptr[4]; /* file ptr to line numbers */ |
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| 191 | char s_nreloc[4]; /* number of relocation entries */ |
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| 192 | char s_nlnno[4]; /* number of line number entries*/ |
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| 193 | char s_flags[4]; /* flags */ |
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| 194 | char s_reserved[2]; /* reserved */ |
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| 195 | char s_page[2]; /* section page number (LOAD) */ |
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| 196 | }; |
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| 197 | |
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| 198 | /* |
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| 199 | * Special section flags |
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| 200 | */ |
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| 201 | |
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| 202 | /* TI COFF defines these flags; |
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| 203 | STYP_CLINK: the section should be excluded from the final |
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| 204 | linker output if there are no references found to any symbol in the section |
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| 205 | STYP_BLOCK: the section should be blocked, i.e. if the section would cross |
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| 206 | a page boundary, it is started at a page boundary instead. |
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| 207 | TI COFF puts the section alignment power of two in the section flags |
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| 208 | e.g. 2**N is alignment, flags |= (N & 0xF) << 8 |
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| 209 | */ |
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| 210 | #define STYP_CLINK (0x4000) |
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| 211 | #define STYP_BLOCK (0x1000) |
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| 212 | #define STYP_ALIGN (0x0F00) /* TI COFF stores section alignment here */ |
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| 213 | |
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| 214 | #define SCNHDR_V01 struct external_scnhdr_v01 |
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| 215 | #define SCNHDR struct external_scnhdr |
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| 216 | #define SCNHSZ_V01 40 /* for v0 and v1 */ |
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| 217 | #define SCNHSZ 48 |
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| 218 | |
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| 219 | /* COFF2 changes the offsets and sizes of these fields |
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| 220 | Assume we're dealing with the COFF2 scnhdr structure, and adjust |
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| 221 | accordingly. Note: The GNU C versions of some of these macros |
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| 222 | are necessary in order to avoid compile time warnings triggered |
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| 223 | gcc's array bounds checking. The PUT_SCNHDR_PAGE macro also has |
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| 224 | the advantage on not evaluating LOC twice. */ |
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| 225 | |
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| 226 | #define GET_SCNHDR_NRELOC(ABFD, LOC) \ |
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| 227 | (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, LOC)) |
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| 228 | #define PUT_SCNHDR_NRELOC(ABFD, VAL, LOC) \ |
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| 229 | (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, LOC)) |
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| 230 | #ifdef __GNUC__ |
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| 231 | #define GET_SCNHDR_NLNNO(ABFD, LOC) \ |
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| 232 | ({ \ |
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| 233 | int nlnno; \ |
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| 234 | char * ptr = (LOC); \ |
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| 235 | if (COFF2_P (ABFD)) \ |
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| 236 | nlnno = H_GET_32 (ABFD, ptr); \ |
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| 237 | else \ |
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| 238 | nlnno = H_GET_16 (ABFD, ptr - 2); \ |
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| 239 | nlnno; \ |
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| 240 | }) |
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| 241 | #define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \ |
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| 242 | do \ |
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| 243 | { \ |
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| 244 | char * ptr = (LOC); \ |
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| 245 | if (COFF2_P (ABFD)) \ |
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| 246 | H_PUT_32 (ABFD, VAL, ptr); \ |
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| 247 | else \ |
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| 248 | H_PUT_16 (ABFD, VAL, ptr - 2); \ |
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| 249 | } \ |
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| 250 | while (0) |
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| 251 | #define GET_SCNHDR_FLAGS(ABFD, LOC) \ |
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| 252 | ({ \ |
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| 253 | int flags; \ |
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| 254 | char * ptr = (LOC); \ |
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| 255 | if (COFF2_P (ABFD)) \ |
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| 256 | flags = H_GET_32 (ABFD, ptr); \ |
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| 257 | else \ |
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| 258 | flags = H_GET_16 (ABFD, ptr - 4); \ |
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| 259 | flags; \ |
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| 260 | }) |
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| 261 | #define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \ |
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| 262 | do \ |
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| 263 | { \ |
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| 264 | char * ptr = (LOC); \ |
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| 265 | if (COFF2_P (ABFD)) \ |
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| 266 | H_PUT_32 (ABFD, VAL, ptr); \ |
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| 267 | else \ |
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| 268 | H_PUT_16 (ABFD, VAL, ptr - 4); \ |
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| 269 | } \ |
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| 270 | while (0) |
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| 271 | #define GET_SCNHDR_PAGE(ABFD, LOC) \ |
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| 272 | ({ \ |
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| 273 | unsigned page; \ |
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| 274 | char * ptr = (LOC); \ |
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| 275 | if (COFF2_P (ABFD)) \ |
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| 276 | page = H_GET_16 (ABFD, ptr); \ |
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| 277 | else \ |
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| 278 | page = (unsigned) H_GET_8 (ABFD, ptr - 7); \ |
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| 279 | page; \ |
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| 280 | }) |
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| 281 | /* On output, make sure that the "reserved" field is zero. */ |
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| 282 | #define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \ |
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| 283 | do \ |
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| 284 | { \ |
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| 285 | char * ptr = (LOC); \ |
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| 286 | if (COFF2_P (ABFD)) \ |
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| 287 | H_PUT_16 (ABFD, VAL, ptr); \ |
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| 288 | else \ |
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| 289 | { \ |
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| 290 | H_PUT_8 (ABFD, VAL, ptr - 7); \ |
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| 291 | H_PUT_8 (ABFD, 0, ptr - 8); \ |
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| 292 | } \ |
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| 293 | } \ |
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| 294 | while (0) |
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| 295 | #else |
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| 296 | #define GET_SCNHDR_NLNNO(ABFD, LOC) \ |
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| 297 | (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 2)) |
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| 298 | #define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \ |
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| 299 | (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 2)) |
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| 300 | #define GET_SCNHDR_FLAGS(ABFD, LOC) \ |
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| 301 | (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 4)) |
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| 302 | #define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \ |
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| 303 | (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 4)) |
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| 304 | #define GET_SCNHDR_PAGE(ABFD, LOC) \ |
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| 305 | (COFF2_P (ABFD) ? H_GET_16 (ABFD, LOC) : (unsigned) H_GET_8 (ABFD, (LOC) - 7)) |
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| 306 | /* On output, make sure that the "reserved" field is zero. */ |
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| 307 | #define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \ |
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| 308 | (COFF2_P (ABFD) \ |
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| 309 | ? H_PUT_16 (ABFD, VAL, LOC) \ |
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| 310 | : H_PUT_8 (ABFD, VAL, (LOC) - 7), H_PUT_8 (ABFD, 0, (LOC) - 8)) |
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| 311 | #endif |
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| 312 | |
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| 313 | |
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| 314 | /* TI COFF stores section size as number of bytes (address units, not octets), |
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| 315 | so adjust to be number of octets, which is what BFD expects */ |
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| 316 | #define GET_SCNHDR_SIZE(ABFD, SZP) \ |
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| 317 | (H_GET_32 (ABFD, SZP) * bfd_octets_per_byte (ABFD)) |
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| 318 | #define PUT_SCNHDR_SIZE(ABFD, SZ, SZP) \ |
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| 319 | H_PUT_32 (ABFD, (SZ) / bfd_octets_per_byte (ABFD), SZP) |
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| 320 | |
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| 321 | #define COFF_ADJUST_SCNHDR_IN_POST(ABFD, EXT, INT) \ |
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| 322 | do \ |
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| 323 | { \ |
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| 324 | ((struct internal_scnhdr *)(INT))->s_page = \ |
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| 325 | GET_SCNHDR_PAGE (ABFD, ((SCNHDR *)(EXT))->s_page); \ |
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| 326 | } \ |
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| 327 | while (0) |
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| 328 | |
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| 329 | /* The entire scnhdr may not be assigned. |
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| 330 | Ensure that everything is initialized. */ |
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| 331 | #define COFF_ADJUST_SCNHDR_OUT_PRE(ABFD, INT, EXT) \ |
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| 332 | do \ |
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| 333 | { \ |
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| 334 | memset((EXT), 0, sizeof (SCNHDR)); \ |
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| 335 | } \ |
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| 336 | while (0) |
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| 337 | |
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| 338 | /* The line number and reloc overflow checking in coff_swap_scnhdr_out in |
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| 339 | coffswap.h doesn't use PUT_X for s_nlnno and s_nreloc. |
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| 340 | Due to different sized v0/v1/v2 section headers, we have to re-write these |
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| 341 | fields. |
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| 342 | */ |
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| 343 | #define COFF_ADJUST_SCNHDR_OUT_POST(ABFD, INT, EXT) \ |
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| 344 | do \ |
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| 345 | { \ |
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| 346 | PUT_SCNHDR_NLNNO (ABFD, ((struct internal_scnhdr *)(INT))->s_nlnno, \ |
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| 347 | ((SCNHDR *)(EXT))->s_nlnno); \ |
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| 348 | PUT_SCNHDR_NRELOC (ABFD, ((struct internal_scnhdr *)(INT))->s_nreloc,\ |
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| 349 | ((SCNHDR *)(EXT))->s_nreloc); \ |
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| 350 | PUT_SCNHDR_FLAGS (ABFD, ((struct internal_scnhdr *)(INT))->s_flags, \ |
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| 351 | ((SCNHDR *)(EXT))->s_flags); \ |
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| 352 | PUT_SCNHDR_PAGE (ABFD, ((struct internal_scnhdr *)(INT))->s_page, \ |
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| 353 | ((SCNHDR *)(EXT))->s_page); \ |
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| 354 | } \ |
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| 355 | while (0) |
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| 356 | |
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| 357 | /* |
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| 358 | * names of "special" sections |
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| 359 | */ |
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| 360 | #define _TEXT ".text" |
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| 361 | #define _DATA ".data" |
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| 362 | #define _BSS ".bss" |
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| 363 | #define _CINIT ".cinit" /* initialized C data */ |
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| 364 | #define _SCONST ".const" /* constants */ |
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| 365 | #define _SWITCH ".switch" /* switch tables */ |
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| 366 | #define _STACK ".stack" /* C stack */ |
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| 367 | #define _SYSMEM ".sysmem" /* used for malloc et al. syscalls */ |
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| 368 | |
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| 369 | /********************** LINE NUMBERS **********************/ |
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| 370 | |
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| 371 | /* 1 line number entry for every "breakpointable" source line in a section. |
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| 372 | * Line numbers are grouped on a per function basis; first entry in a function |
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| 373 | * grouping will have l_lnno = 0 and in place of physical address will be the |
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| 374 | * symbol table index of the function name. |
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| 375 | */ |
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| 376 | struct external_lineno { |
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| 377 | union { |
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| 378 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ |
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| 379 | char l_paddr[4]; /* (physical) address of line number */ |
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| 380 | } l_addr; |
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| 381 | char l_lnno[2]; /* line number */ |
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| 382 | }; |
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| 383 | |
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| 384 | #define LINENO struct external_lineno |
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| 385 | #define LINESZ 6 |
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| 386 | |
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| 387 | |
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| 388 | /********************** SYMBOLS **********************/ |
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| 389 | |
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| 390 | /* NOTE: this is what a local label looks like in assembly source; what it |
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| 391 | looks like in COFF output is undefined */ |
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| 392 | #define TICOFF_LOCAL_LABEL_P(NAME) \ |
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| 393 | ((NAME[0] == '$' && NAME[1] >= '0' && NAME[1] <= '9' && NAME[2] == '\0') \ |
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| 394 | || NAME[strlen(NAME)-1] == '?') |
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| 395 | |
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| 396 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
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| 397 | #define E_FILNMLEN 14 /* # characters in a file name */ |
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| 398 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ |
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| 399 | |
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| 400 | struct external_syment |
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| 401 | { |
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| 402 | union { |
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| 403 | char e_name[E_SYMNMLEN]; |
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| 404 | struct { |
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| 405 | char e_zeroes[4]; |
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| 406 | char e_offset[4]; |
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| 407 | } e; |
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| 408 | } e; |
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| 409 | char e_value[4]; |
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| 410 | char e_scnum[2]; |
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| 411 | char e_type[2]; |
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| 412 | char e_sclass[1]; |
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| 413 | char e_numaux[1]; |
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| 414 | }; |
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| 415 | |
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| 416 | |
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| 417 | #define N_BTMASK (017) |
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| 418 | #define N_TMASK (060) |
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| 419 | #define N_BTSHFT (4) |
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| 420 | #define N_TSHIFT (2) |
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| 421 | |
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| 422 | |
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| 423 | union external_auxent { |
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| 424 | struct { |
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| 425 | char x_tagndx[4]; /* str, un, or enum tag indx */ |
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| 426 | union { |
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| 427 | struct { |
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| 428 | char x_lnno[2]; /* declaration line number */ |
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| 429 | char x_size[2]; /* str/union/array size */ |
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| 430 | } x_lnsz; |
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| 431 | char x_fsize[4]; /* size of function */ |
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| 432 | } x_misc; |
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| 433 | union { |
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| 434 | struct { /* if ISFCN, tag, or .bb */ |
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| 435 | char x_lnnoptr[4]; /* ptr to fcn line # */ |
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| 436 | char x_endndx[4]; /* entry ndx past block end */ |
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| 437 | } x_fcn; |
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| 438 | struct { /* if ISARY, up to 4 dimen. */ |
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| 439 | char x_dimen[E_DIMNUM][2]; |
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| 440 | } x_ary; |
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| 441 | } x_fcnary; |
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| 442 | char x_tvndx[2]; /* tv index */ |
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| 443 | } x_sym; |
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| 444 | |
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| 445 | union { |
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| 446 | char x_fname[E_FILNMLEN]; |
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| 447 | struct { |
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| 448 | char x_zeroes[4]; |
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| 449 | char x_offset[4]; |
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| 450 | } x_n; |
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| 451 | } x_file; |
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| 452 | |
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| 453 | struct { |
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| 454 | char x_scnlen[4]; /* section length */ |
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| 455 | char x_nreloc[2]; /* # relocation entries */ |
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| 456 | char x_nlinno[2]; /* # line numbers */ |
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| 457 | } x_scn; |
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| 458 | |
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| 459 | struct { |
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| 460 | char x_tvfill[4]; /* tv fill value */ |
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| 461 | char x_tvlen[2]; /* length of .tv */ |
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| 462 | char x_tvran[2][2]; /* tv range */ |
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| 463 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ |
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| 464 | |
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| 465 | |
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| 466 | }; |
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| 467 | |
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| 468 | #define SYMENT struct external_syment |
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| 469 | #define SYMESZ 18 |
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| 470 | #define AUXENT union external_auxent |
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| 471 | #define AUXESZ 18 |
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| 472 | |
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| 473 | /* section lengths are in target bytes (not host bytes) */ |
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| 474 | #define GET_SCN_SCNLEN(ABFD, EXT) \ |
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| 475 | (H_GET_32 (ABFD, (EXT)->x_scn.x_scnlen) * bfd_octets_per_byte (ABFD)) |
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| 476 | #define PUT_SCN_SCNLEN(ABFD, INT, EXT) \ |
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| 477 | H_PUT_32 (ABFD, (INT) / bfd_octets_per_byte (ABFD), (EXT)->x_scn.x_scnlen) |
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| 478 | |
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| 479 | /* lnsz size is in bits in COFF file, in bytes in BFD */ |
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| 480 | #define GET_LNSZ_SIZE(abfd, ext) \ |
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| 481 | (H_GET_16 (abfd, ext->x_sym.x_misc.x_lnsz.x_size) / (in_class != C_FIELD ? 8 : 1)) |
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| 482 | |
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| 483 | #define PUT_LNSZ_SIZE(abfd, in, ext) \ |
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| 484 | H_PUT_16 (abfd, ((in_class != C_FIELD) ? (in) * 8 : (in)), \ |
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| 485 | ext->x_sym.x_misc.x_lnsz.x_size) |
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| 486 | |
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| 487 | /* TI COFF stores offsets for MOS and MOU in bits; BFD expects bytes |
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| 488 | Also put the load page flag of the section into the symbol value if it's an |
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| 489 | address. */ |
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| 490 | #ifndef NEEDS_PAGE |
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| 491 | #define NEEDS_PAGE(X) 0 |
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| 492 | #define PAGE_MASK 0 |
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| 493 | #endif |
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| 494 | #define COFF_ADJUST_SYM_IN_POST(ABFD, EXT, INT) \ |
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| 495 | do \ |
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| 496 | { \ |
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| 497 | struct internal_syment *dst = (struct internal_syment *)(INT); \ |
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| 498 | if (dst->n_sclass == C_MOS || dst->n_sclass == C_MOU) \ |
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| 499 | dst->n_value /= 8; \ |
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| 500 | else if (NEEDS_PAGE (dst->n_sclass)) { \ |
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| 501 | asection *scn = coff_section_from_bfd_index (abfd, dst->n_scnum); \ |
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| 502 | dst->n_value |= (scn->lma & PAGE_MASK); \ |
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| 503 | } \ |
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| 504 | } \ |
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| 505 | while (0) |
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| 506 | |
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| 507 | #define COFF_ADJUST_SYM_OUT_POST(ABFD, INT, EXT) \ |
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| 508 | do \ |
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| 509 | { \ |
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| 510 | struct internal_syment *src = (struct internal_syment *)(INT); \ |
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| 511 | SYMENT *dst = (SYMENT *)(EXT); \ |
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| 512 | if (src->n_sclass == C_MOU || src->n_sclass == C_MOS) \ |
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| 513 | H_PUT_32 (abfd, src->n_value * 8, dst->e_value); \ |
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| 514 | else if (NEEDS_PAGE (src->n_sclass)) { \ |
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| 515 | H_PUT_32 (abfd, src->n_value &= ~PAGE_MASK, dst->e_value); \ |
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| 516 | } \ |
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| 517 | } \ |
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| 518 | while (0) |
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| 519 | |
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| 520 | /* Detect section-relative absolute symbols so they get flagged with a sym |
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| 521 | index of -1. |
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| 522 | */ |
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| 523 | #define SECTION_RELATIVE_ABSOLUTE_SYMBOL_P(RELOC, SECT) \ |
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| 524 | ((*(RELOC)->sym_ptr_ptr)->section->output_section == (SECT) \ |
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| 525 | && (RELOC)->howto->name[0] == 'A') |
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| 526 | |
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| 527 | /********************** RELOCATION DIRECTIVES **********************/ |
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| 528 | |
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| 529 | struct external_reloc_v0 |
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| 530 | { |
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| 531 | char r_vaddr[4]; |
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| 532 | char r_symndx[2]; |
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| 533 | char r_reserved[2]; |
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| 534 | char r_type[2]; |
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| 535 | }; |
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| 536 | |
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| 537 | struct external_reloc |
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| 538 | { |
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| 539 | char r_vaddr[4]; |
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| 540 | char r_symndx[4]; |
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| 541 | char r_reserved[2]; /* extended pmad byte for COFF2 */ |
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| 542 | char r_type[2]; |
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| 543 | }; |
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| 544 | |
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| 545 | #define RELOC struct external_reloc |
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| 546 | #define RELSZ_V0 10 /* FIXME -- coffcode.h needs fixing */ |
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| 547 | #define RELSZ 12 /* for COFF1/2 */ |
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| 548 | |
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| 549 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ |
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| 550 | do memset (dst->r_reserved, 0, sizeof (dst->r_reserved)); while (0) |
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| 551 | |
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| 552 | /* various relocation types. */ |
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| 553 | #define R_ABS 0x0000 /* no relocation */ |
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| 554 | #define R_REL13 0x002A /* 13-bit direct reference (???) */ |
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| 555 | #define R_PARTLS7 0x0028 /* 7 LSBs of an address */ |
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| 556 | #define R_PARTMS9 0x0029 /* 9MSBs of an address */ |
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| 557 | #define R_EXTWORD 0x002B /* 23-bit direct reference */ |
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| 558 | #define R_EXTWORD16 0x002C /* 16-bit direct reference to 23-bit addr*/ |
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| 559 | #define R_EXTWORDMS7 0x002D /* upper 7 bits of 23-bit address */ |
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| 560 | |
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| 561 | #endif /* COFF_TI_H */ |
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