coff_machdep.h revision 1.2
1 /* $NetBSD: coff_machdep.h,v 1.2 2000/01/02 13:39:51 msaitoh Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Scott Bartram 5 * All rights reserved. 6 * 7 * adapted from sys/sys/exec_ecoff.h 8 * based on Intel iBCS2 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _SH3_COFF_MACHDEP_H_ 34 #define _SH3_COFF_MACHDEP_H_ 35 36 /* 37 * COFF file header 38 */ 39 40 struct coff_filehdr { 41 u_short f_magic; /* magic number */ 42 u_short f_nscns; /* # of sections */ 43 long f_timdat; /* timestamp */ 44 long f_symptr; /* file offset of symbol table */ 45 long f_nsyms; /* # of symbol table entries */ 46 u_short f_opthdr; /* size of optional header */ 47 u_short f_flags; /* flags */ 48 }; 49 50 /* f_magic flags */ 51 #define COFF_MAGIC_SH3_BIG 0x500 52 #define COFF_MAGIC_SH3_LITTLE 0x550 53 54 /* f_flags */ 55 #define COFF_F_RELFLG 0x1 56 #define COFF_F_EXEC 0x2 57 #define COFF_F_LNNO 0x4 58 #define COFF_F_LSYMS 0x8 59 #define COFF_F_SWABD 0x40 60 #define COFF_F_AR16WR 0x80 61 #define COFF_F_AR32WR 0x100 62 #define COFF_F_AR32W 0x200 63 64 /* 65 * COFF system header 66 */ 67 68 struct coff_aouthdr { 69 short a_magic; 70 short a_vstamp; 71 long a_tsize; 72 long a_dsize; 73 long a_bsize; 74 long a_entry; 75 long a_tstart; 76 long a_dstart; 77 }; 78 79 /* magic */ 80 #define COFF_OMAGIC 0444 /* text not write-protected; data seg 81 is contiguous with text */ 82 #define COFF_NMAGIC 0410 /* text is write-protected; data starts 83 at next seg following text */ 84 #define COFF_ZMAGIC 0000 /* text and data segs are aligned for 85 direct paging */ 86 #define COFF_SMAGIC 0443 /* shared lib */ 87 88 /* 89 * COFF section header 90 */ 91 92 struct coff_scnhdr { 93 char s_name[8]; 94 long s_paddr; 95 long s_vaddr; 96 long s_size; 97 long s_scnptr; 98 long s_relptr; 99 long s_lnnoptr; 100 u_short s_nreloc; 101 u_short s_nlnno; 102 long s_flags; 103 }; 104 105 /* s_flags */ 106 #define COFF_STYP_REG 0x00 107 #define COFF_STYP_DSECT 0x01 108 #define COFF_STYP_NOLOAD 0x02 109 #define COFF_STYP_GROUP 0x04 110 #define COFF_STYP_PAD 0x08 111 #define COFF_STYP_COPY 0x10 112 #define COFF_STYP_TEXT 0x20 113 #define COFF_STYP_DATA 0x40 114 #define COFF_STYP_BSS 0x80 115 #define COFF_STYP_INFO 0x200 116 #define COFF_STYP_OVER 0x400 117 #define COFF_STYP_SHLIB 0x800 118 119 /* 120 * COFF shared library header 121 */ 122 123 struct coff_slhdr { 124 long entry_len; /* in words */ 125 long path_index; /* in words */ 126 char sl_name[1]; 127 }; 128 129 struct coff_exechdr { 130 struct coff_filehdr f; 131 struct coff_aouthdr a; 132 }; 133 134 #define COFF_ROUND(val, by) (((val) + by - 1) & ~(by - 1)) 135 136 #define COFF_ALIGN(a) ((a) & ~(COFF_LDPGSZ - 1)) 137 138 #define COFF_HDR_SIZE \ 139 (sizeof(struct coff_filehdr) + sizeof(struct coff_aouthdr)) 140 141 #define COFF_BLOCK_ALIGN(ap, value) \ 142 ((ap)->a_magic == COFF_ZMAGIC ? COFF_ROUND(value, COFF_LDPGSZ) : \ 143 value) 144 145 #define COFF_TXTOFF(fp, ap) \ 146 ((ap)->a_magic == COFF_ZMAGIC ? 0 : \ 147 COFF_ROUND(COFF_HDR_SIZE + (fp)->f_nscns * \ 148 sizeof(struct coff_scnhdr), \ 149 COFF_SEGMENT_ALIGNMENT(fp, ap))) 150 151 #define COFF_DATOFF(fp, ap) \ 152 (COFF_BLOCK_ALIGN(ap, COFF_TXTOFF(fp, ap) + (ap)->a_tsize)) 153 154 #define COFF_SEGMENT_ALIGN(fp, ap, value) \ 155 (COFF_ROUND(value, ((ap)->a_magic == COFF_ZMAGIC ? COFF_LDPGSZ : \ 156 COFF_SEGMENT_ALIGNMENT(fp, ap)))) 157 158 #define COFF_LDPGSZ 4096 159 160 #define COFF_SEGMENT_ALIGNMENT(fp, ap) \ 161 (((fp)->f_flags & COFF_F_EXEC) == 0 ? 4 : 16) 162 163 #ifndef BYTE_ORDER 164 #error Define BYTE_ORDER! 165 #endif 166 167 #if BYTE_ORDER == BIG_ENDIAN 168 #define COFF_BADMAG(ex) ((ex)->f_magic != COFF_MAGIC_SH3_BIG) 169 #endif 170 #if BYTE_ORDER == LITTLE_ENDIAN 171 #define COFF_BADMAG(ex) ((ex)->f_magic != COFF_MAGIC_SH3_LITTLE) 172 #endif 173 174 #define IBCS2_HIGH_SYSCALL(n) (((n) & 0x7f) == 0x28) 175 #define IBCS2_CVT_HIGH_SYSCALL(n) (((n) >> 8) + 128) 176 177 #ifdef DEBUG_COFF 178 #define DPRINTF(a) printf a; 179 #else 180 #define DPRINTF(a) 181 #endif 182 183 #define COFF_ES_SYMNMLEN 8 184 #define COFF_ES_SYMENTSZ 18 185 186 struct external_syment { 187 union { 188 char e_name[COFF_ES_SYMNMLEN]; 189 struct { 190 char e_zeroes[4]; 191 char e_offset[4]; 192 } e; 193 } e; 194 char e_value[4]; 195 char e_scnum[2]; 196 char e_type[2]; 197 char e_sclass[1]; 198 char e_numaux[1]; 199 }; 200 201 #endif /* !_SH3_COFF_MACHDEP_H_ */ 202 203
Indexes created Sun Sep 28 16:09:52 GMT 2025