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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5191 | serge | 1 | /* ECOFF support on Alpha machines. |
| 2 | coff/ecoff.h must be included before this file. |
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| 3 | |||
| 6324 | serge | 4 | Copyright (C) 2001-2015 Free Software Foundation, Inc. |
| 5191 | serge | 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 3 of the License, or |
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| 9 | (at your option) any later version. |
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| 10 | |||
| 11 | This program is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |||
| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with this program; if not, write to the Free Software |
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| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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| 19 | MA 02110-1301, USA. */ |
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| 20 | |||
| 21 | /********************** FILE HEADER **********************/ |
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| 22 | |||
| 23 | struct external_filehdr |
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| 24 | { |
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| 25 | unsigned char f_magic[2]; /* magic number */ |
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| 26 | unsigned char f_nscns[2]; /* number of sections */ |
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| 27 | unsigned char f_timdat[4]; /* time & date stamp */ |
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| 28 | unsigned char f_symptr[8]; /* file pointer to symtab */ |
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| 29 | unsigned char f_nsyms[4]; /* number of symtab entries */ |
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| 30 | unsigned char f_opthdr[2]; /* sizeof(optional hdr) */ |
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| 31 | unsigned char f_flags[2]; /* flags */ |
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| 32 | }; |
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| 33 | |||
| 34 | /* Magic numbers are defined in coff/ecoff.h. */ |
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| 35 | #define ALPHA_ECOFF_BADMAG(x) \ |
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| 36 | ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD) |
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| 37 | |||
| 38 | #define ALPHA_ECOFF_COMPRESSEDMAG(x) \ |
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| 39 | ((x).f_magic == ALPHA_MAGIC_COMPRESSED) |
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| 40 | |||
| 41 | /* The object type is encoded in the f_flags. */ |
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| 42 | #define F_ALPHA_OBJECT_TYPE_MASK 0x3000 |
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| 43 | #define F_ALPHA_NO_SHARED 0x1000 |
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| 44 | #define F_ALPHA_SHARABLE 0x2000 |
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| 45 | #define F_ALPHA_CALL_SHARED 0x3000 |
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| 46 | |||
| 47 | #define FILHDR struct external_filehdr |
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| 48 | #define FILHSZ 24 |
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| 49 | |||
| 50 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
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| 51 | |||
| 52 | typedef struct external_aouthdr |
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| 53 | { |
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| 54 | unsigned char magic[2]; /* type of file */ |
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| 55 | unsigned char vstamp[2]; /* version stamp */ |
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| 56 | unsigned char bldrev[2]; /* ?? */ |
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| 57 | unsigned char padding[2]; /* pad to quadword boundary */ |
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| 58 | unsigned char tsize[8]; /* text size in bytes */ |
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| 59 | unsigned char dsize[8]; /* initialized data " " */ |
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| 60 | unsigned char bsize[8]; /* uninitialized data " " */ |
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| 61 | unsigned char entry[8]; /* entry pt. */ |
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| 62 | unsigned char text_start[8]; /* base of text used for this file */ |
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| 63 | unsigned char data_start[8]; /* base of data used for this file */ |
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| 64 | unsigned char bss_start[8]; /* base of bss used for this file */ |
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| 65 | unsigned char gprmask[4]; /* bitmask of general registers used */ |
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| 66 | unsigned char fprmask[4]; /* bitmask of floating point registers used */ |
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| 67 | unsigned char gp_value[8]; /* value for gp register */ |
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| 68 | } AOUTHDR; |
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| 69 | |||
| 70 | /* compute size of a header */ |
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| 71 | |||
| 72 | #define AOUTSZ 80 |
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| 73 | #define AOUTHDRSZ 80 |
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| 74 | |||
| 75 | /********************** SECTION HEADER **********************/ |
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| 76 | |||
| 77 | struct external_scnhdr |
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| 78 | { |
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| 79 | unsigned char s_name[8]; /* section name */ |
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| 80 | unsigned char s_paddr[8]; /* physical address, aliased s_nlib */ |
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| 81 | unsigned char s_vaddr[8]; /* virtual address */ |
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| 82 | unsigned char s_size[8]; /* section size */ |
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| 83 | unsigned char s_scnptr[8]; /* file ptr to raw data for section */ |
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| 84 | unsigned char s_relptr[8]; /* file ptr to relocation */ |
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| 85 | unsigned char s_lnnoptr[8]; /* file ptr to line numbers */ |
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| 86 | unsigned char s_nreloc[2]; /* number of relocation entries */ |
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| 87 | unsigned char s_nlnno[2]; /* number of line number entries*/ |
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| 88 | unsigned char s_flags[4]; /* flags */ |
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| 89 | }; |
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| 90 | |||
| 91 | #define SCNHDR struct external_scnhdr |
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| 92 | #define SCNHSZ 64 |
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| 93 | |||
| 94 | /********************** RELOCATION DIRECTIVES **********************/ |
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| 95 | |||
| 96 | struct external_reloc |
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| 97 | { |
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| 98 | unsigned char r_vaddr[8]; |
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| 99 | unsigned char r_symndx[4]; |
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| 100 | unsigned char r_bits[4]; |
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| 101 | }; |
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| 102 | |||
| 103 | #define RELOC struct external_reloc |
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| 104 | #define RELSZ 16 |
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| 105 | |||
| 106 | /* Constants to unpack the r_bits field. The Alpha seems to always be |
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| 107 | little endian, so I haven't bothered to define big endian variants |
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| 108 | of these. */ |
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| 109 | |||
| 110 | #define RELOC_BITS0_TYPE_LITTLE 0xff |
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| 111 | #define RELOC_BITS0_TYPE_SH_LITTLE 0 |
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| 112 | |||
| 113 | #define RELOC_BITS1_EXTERN_LITTLE 0x01 |
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| 114 | |||
| 115 | #define RELOC_BITS1_OFFSET_LITTLE 0x7e |
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| 116 | #define RELOC_BITS1_OFFSET_SH_LITTLE 1 |
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| 117 | |||
| 118 | #define RELOC_BITS1_RESERVED_LITTLE 0x80 |
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| 119 | #define RELOC_BITS1_RESERVED_SH_LITTLE 7 |
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| 120 | #define RELOC_BITS2_RESERVED_LITTLE 0xff |
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| 121 | #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1 |
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| 122 | #define RELOC_BITS3_RESERVED_LITTLE 0x03 |
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| 123 | #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9 |
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| 124 | |||
| 125 | #define RELOC_BITS3_SIZE_LITTLE 0xfc |
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| 126 | #define RELOC_BITS3_SIZE_SH_LITTLE 2 |
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| 127 | |||
| 128 | /* The r_type field in a reloc is one of the following values. */ |
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| 129 | #define ALPHA_R_IGNORE 0 |
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| 130 | #define ALPHA_R_REFLONG 1 |
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| 131 | #define ALPHA_R_REFQUAD 2 |
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| 132 | #define ALPHA_R_GPREL32 3 |
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| 133 | #define ALPHA_R_LITERAL 4 |
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| 134 | #define ALPHA_R_LITUSE 5 |
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| 135 | #define ALPHA_R_GPDISP 6 |
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| 136 | #define ALPHA_R_BRADDR 7 |
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| 137 | #define ALPHA_R_HINT 8 |
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| 138 | #define ALPHA_R_SREL16 9 |
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| 139 | #define ALPHA_R_SREL32 10 |
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| 140 | #define ALPHA_R_SREL64 11 |
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| 141 | #define ALPHA_R_OP_PUSH 12 |
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| 142 | #define ALPHA_R_OP_STORE 13 |
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| 143 | #define ALPHA_R_OP_PSUB 14 |
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| 144 | #define ALPHA_R_OP_PRSHIFT 15 |
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| 145 | #define ALPHA_R_GPVALUE 16 |
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| 146 | #define ALPHA_R_GPRELHIGH 17 |
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| 147 | #define ALPHA_R_GPRELLOW 18 |
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| 148 | #define ALPHA_R_IMMED 19 |
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| 149 | |||
| 150 | /* Overloaded reloc value used by Net- and OpenBSD. */ |
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| 151 | #define ALPHA_R_LITERALSLEAZY 17 |
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| 152 | |||
| 153 | /* With ALPHA_R_LITUSE, the r_size field is one of the following values. */ |
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| 154 | #define ALPHA_R_LU_BASE 1 |
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| 155 | #define ALPHA_R_LU_BYTOFF 2 |
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| 156 | #define ALPHA_R_LU_JSR 3 |
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| 157 | |||
| 158 | /* With ALPHA_R_IMMED, the r_size field is one of the following values. */ |
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| 159 | #define ALPHA_R_IMMED_GP_16 1 |
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| 160 | #define ALPHA_R_IMMED_GP_HI32 2 |
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| 161 | #define ALPHA_R_IMMED_SCN_HI32 3 |
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| 162 | #define ALPHA_R_IMMED_BR_HI32 4 |
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| 163 | #define ALPHA_R_IMMED_LO32 5 |
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| 164 | |||
| 165 | /********************** SYMBOLIC INFORMATION **********************/ |
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| 166 | |||
| 167 | /* Written by John Gilmore. */ |
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| 168 | |||
| 169 | /* ECOFF uses COFF-like section structures, but its own symbol format. |
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| 170 | This file defines the symbol format in fields whose size and alignment |
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| 171 | will not vary on different host systems. */ |
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| 172 | |||
| 173 | /* File header as a set of bytes */ |
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| 174 | |||
| 175 | struct hdr_ext |
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| 176 | { |
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| 177 | unsigned char h_magic[2]; |
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| 178 | unsigned char h_vstamp[2]; |
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| 179 | unsigned char h_ilineMax[4]; |
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| 180 | unsigned char h_idnMax[4]; |
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| 181 | unsigned char h_ipdMax[4]; |
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| 182 | unsigned char h_isymMax[4]; |
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| 183 | unsigned char h_ioptMax[4]; |
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| 184 | unsigned char h_iauxMax[4]; |
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| 185 | unsigned char h_issMax[4]; |
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| 186 | unsigned char h_issExtMax[4]; |
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| 187 | unsigned char h_ifdMax[4]; |
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| 188 | unsigned char h_crfd[4]; |
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| 189 | unsigned char h_iextMax[4]; |
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| 190 | unsigned char h_cbLine[8]; |
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| 191 | unsigned char h_cbLineOffset[8]; |
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| 192 | unsigned char h_cbDnOffset[8]; |
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| 193 | unsigned char h_cbPdOffset[8]; |
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| 194 | unsigned char h_cbSymOffset[8]; |
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| 195 | unsigned char h_cbOptOffset[8]; |
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| 196 | unsigned char h_cbAuxOffset[8]; |
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| 197 | unsigned char h_cbSsOffset[8]; |
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| 198 | unsigned char h_cbSsExtOffset[8]; |
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| 199 | unsigned char h_cbFdOffset[8]; |
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| 200 | unsigned char h_cbRfdOffset[8]; |
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| 201 | unsigned char h_cbExtOffset[8]; |
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| 202 | }; |
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| 203 | |||
| 204 | /* File descriptor external record */ |
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| 205 | |||
| 206 | struct fdr_ext |
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| 207 | { |
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| 208 | unsigned char f_adr[8]; |
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| 209 | unsigned char f_cbLineOffset[8]; |
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| 210 | unsigned char f_cbLine[8]; |
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| 211 | unsigned char f_cbSs[8]; |
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| 212 | unsigned char f_rss[4]; |
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| 213 | unsigned char f_issBase[4]; |
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| 214 | unsigned char f_isymBase[4]; |
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| 215 | unsigned char f_csym[4]; |
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| 216 | unsigned char f_ilineBase[4]; |
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| 217 | unsigned char f_cline[4]; |
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| 218 | unsigned char f_ioptBase[4]; |
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| 219 | unsigned char f_copt[4]; |
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| 220 | unsigned char f_ipdFirst[4]; |
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| 221 | unsigned char f_cpd[4]; |
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| 222 | unsigned char f_iauxBase[4]; |
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| 223 | unsigned char f_caux[4]; |
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| 224 | unsigned char f_rfdBase[4]; |
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| 225 | unsigned char f_crfd[4]; |
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| 226 | unsigned char f_bits1[1]; |
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| 227 | unsigned char f_bits2[3]; |
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| 228 | unsigned char f_padding[4]; |
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| 229 | }; |
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| 230 | |||
| 231 | #define FDR_BITS1_LANG_BIG 0xF8 |
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| 232 | #define FDR_BITS1_LANG_SH_BIG 3 |
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| 233 | #define FDR_BITS1_LANG_LITTLE 0x1F |
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| 234 | #define FDR_BITS1_LANG_SH_LITTLE 0 |
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| 235 | |||
| 236 | #define FDR_BITS1_FMERGE_BIG 0x04 |
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| 237 | #define FDR_BITS1_FMERGE_LITTLE 0x20 |
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| 238 | |||
| 239 | #define FDR_BITS1_FREADIN_BIG 0x02 |
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| 240 | #define FDR_BITS1_FREADIN_LITTLE 0x40 |
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| 241 | |||
| 242 | #define FDR_BITS1_FBIGENDIAN_BIG 0x01 |
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| 243 | #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80 |
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| 244 | |||
| 245 | #define FDR_BITS2_GLEVEL_BIG 0xC0 |
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| 246 | #define FDR_BITS2_GLEVEL_SH_BIG 6 |
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| 247 | #define FDR_BITS2_GLEVEL_LITTLE 0x03 |
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| 248 | #define FDR_BITS2_GLEVEL_SH_LITTLE 0 |
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| 249 | |||
| 250 | /* We ignore the `reserved' field in bits2. */ |
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| 251 | |||
| 252 | /* Procedure descriptor external record */ |
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| 253 | |||
| 254 | struct pdr_ext { |
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| 255 | unsigned char p_adr[8]; |
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| 256 | unsigned char p_cbLineOffset[8]; |
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| 257 | unsigned char p_isym[4]; |
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| 258 | unsigned char p_iline[4]; |
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| 259 | unsigned char p_regmask[4]; |
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| 260 | unsigned char p_regoffset[4]; |
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| 261 | unsigned char p_iopt[4]; |
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| 262 | unsigned char p_fregmask[4]; |
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| 263 | unsigned char p_fregoffset[4]; |
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| 264 | unsigned char p_frameoffset[4]; |
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| 265 | unsigned char p_lnLow[4]; |
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| 266 | unsigned char p_lnHigh[4]; |
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| 267 | unsigned char p_gp_prologue[1]; |
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| 268 | unsigned char p_bits1[1]; |
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| 269 | unsigned char p_bits2[1]; |
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| 270 | unsigned char p_localoff[1]; |
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| 271 | unsigned char p_framereg[2]; |
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| 272 | unsigned char p_pcreg[2]; |
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| 273 | }; |
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| 274 | |||
| 275 | #define PDR_BITS1_GP_USED_BIG 0x80 |
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| 276 | #define PDR_BITS1_REG_FRAME_BIG 0x40 |
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| 277 | #define PDR_BITS1_PROF_BIG 0x20 |
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| 278 | #define PDR_BITS1_RESERVED_BIG 0x1f |
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| 279 | #define PDR_BITS1_RESERVED_SH_LEFT_BIG 8 |
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| 280 | #define PDR_BITS2_RESERVED_BIG 0xff |
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| 281 | #define PDR_BITS2_RESERVED_SH_BIG 0 |
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| 282 | |||
| 283 | #define PDR_BITS1_GP_USED_LITTLE 0x01 |
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| 284 | #define PDR_BITS1_REG_FRAME_LITTLE 0x02 |
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| 285 | #define PDR_BITS1_PROF_LITTLE 0x04 |
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| 286 | #define PDR_BITS1_RESERVED_LITTLE 0xf8 |
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| 287 | #define PDR_BITS1_RESERVED_SH_LITTLE 3 |
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| 288 | #define PDR_BITS2_RESERVED_LITTLE 0xff |
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| 289 | #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5 |
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| 290 | |||
| 291 | /* Line numbers */ |
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| 292 | |||
| 293 | struct line_ext { |
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| 294 | unsigned char l_line[4]; |
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| 295 | }; |
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| 296 | |||
| 297 | /* Symbol external record */ |
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| 298 | |||
| 299 | struct sym_ext { |
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| 300 | unsigned char s_value[8]; |
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| 301 | unsigned char s_iss[4]; |
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| 302 | unsigned char s_bits1[1]; |
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| 303 | unsigned char s_bits2[1]; |
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| 304 | unsigned char s_bits3[1]; |
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| 305 | unsigned char s_bits4[1]; |
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| 306 | }; |
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| 307 | |||
| 308 | #define SYM_BITS1_ST_BIG 0xFC |
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| 309 | #define SYM_BITS1_ST_SH_BIG 2 |
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| 310 | #define SYM_BITS1_ST_LITTLE 0x3F |
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| 311 | #define SYM_BITS1_ST_SH_LITTLE 0 |
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| 312 | |||
| 313 | #define SYM_BITS1_SC_BIG 0x03 |
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| 314 | #define SYM_BITS1_SC_SH_LEFT_BIG 3 |
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| 315 | #define SYM_BITS1_SC_LITTLE 0xC0 |
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| 316 | #define SYM_BITS1_SC_SH_LITTLE 6 |
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| 317 | |||
| 318 | #define SYM_BITS2_SC_BIG 0xE0 |
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| 319 | #define SYM_BITS2_SC_SH_BIG 5 |
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| 320 | #define SYM_BITS2_SC_LITTLE 0x07 |
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| 321 | #define SYM_BITS2_SC_SH_LEFT_LITTLE 2 |
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| 322 | |||
| 323 | #define SYM_BITS2_RESERVED_BIG 0x10 |
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| 324 | #define SYM_BITS2_RESERVED_LITTLE 0x08 |
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| 325 | |||
| 326 | #define SYM_BITS2_INDEX_BIG 0x0F |
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| 327 | #define SYM_BITS2_INDEX_SH_LEFT_BIG 16 |
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| 328 | #define SYM_BITS2_INDEX_LITTLE 0xF0 |
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| 329 | #define SYM_BITS2_INDEX_SH_LITTLE 4 |
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| 330 | |||
| 331 | #define SYM_BITS3_INDEX_SH_LEFT_BIG 8 |
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| 332 | #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4 |
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| 333 | |||
| 334 | #define SYM_BITS4_INDEX_SH_LEFT_BIG 0 |
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| 335 | #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12 |
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| 336 | |||
| 337 | /* External symbol external record */ |
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| 338 | |||
| 339 | struct ext_ext { |
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| 340 | struct sym_ext es_asym; |
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| 341 | unsigned char es_bits1[1]; |
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| 342 | unsigned char es_bits2[3]; |
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| 343 | unsigned char es_ifd[4]; |
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| 344 | }; |
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| 345 | |||
| 346 | #define EXT_BITS1_JMPTBL_BIG 0x80 |
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| 347 | #define EXT_BITS1_JMPTBL_LITTLE 0x01 |
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| 348 | |||
| 349 | #define EXT_BITS1_COBOL_MAIN_BIG 0x40 |
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| 350 | #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02 |
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| 351 | |||
| 352 | #define EXT_BITS1_WEAKEXT_BIG 0x20 |
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| 353 | #define EXT_BITS1_WEAKEXT_LITTLE 0x04 |
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| 354 | |||
| 355 | /* Dense numbers external record */ |
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| 356 | |||
| 357 | struct dnr_ext { |
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| 358 | unsigned char d_rfd[4]; |
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| 359 | unsigned char d_index[4]; |
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| 360 | }; |
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| 361 | |||
| 362 | /* Relative file descriptor */ |
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| 363 | |||
| 364 | struct rfd_ext { |
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| 365 | unsigned char rfd[4]; |
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| 366 | }; |
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| 367 | |||
| 368 | /* Optimizer symbol external record */ |
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| 369 | |||
| 370 | struct opt_ext { |
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| 371 | unsigned char o_bits1[1]; |
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| 372 | unsigned char o_bits2[1]; |
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| 373 | unsigned char o_bits3[1]; |
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| 374 | unsigned char o_bits4[1]; |
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| 375 | struct rndx_ext o_rndx; |
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| 376 | unsigned char o_offset[4]; |
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| 377 | }; |
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| 378 | |||
| 379 | #define OPT_BITS2_VALUE_SH_LEFT_BIG 16 |
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| 380 | #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0 |
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| 381 | |||
| 382 | #define OPT_BITS3_VALUE_SH_LEFT_BIG 8 |
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| 383 | #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8 |
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| 384 | |||
| 385 | #define OPT_BITS4_VALUE_SH_LEFT_BIG 0 |
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| 386 | #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16 |