projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 1136f72d | 1 | /* |
| 0f052032 JH |
2 | * Copyright (c) 1993 Paul Kranenburg |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by Paul Kranenburg. | |
| 16 | * 4. The name of the author may not be used to endorse or promote products | |
| 17 | * derived from this software withough specific prior written permission | |
| 18 | * | |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 | * | |
| 6a61ea88 | 30 | * $Id: md.h,v 1.8 1994/01/19 15:00:37 davidg Exp $ |
| 1136f72d PR |
31 | */ |
| 32 | ||
| 33 | ||
| 34 | #if defined(CROSS_LINKER) && defined(XHOST) && XHOST==sparc | |
| 35 | ||
| 36 | #define NEED_SWAP | |
| 37 | ||
| 38 | #endif | |
| 39 | ||
| 40 | #define MAX_ALIGNMENT (sizeof (long)) | |
| 41 | ||
| 42 | #ifdef NetBSD | |
| 43 | #define PAGSIZ __LDPGSZ | |
| 44 | #else | |
| 45 | #define PAGSIZ 4096 | |
| 46 | #endif | |
| 47 | ||
| 6a61ea88 JH |
48 | #if defined(NetBSD) || defined(CROSS_LINKER) |
| 49 | ||
| 50 | #define N_SET_FLAG(ex,f) (oldmagic || N_GETMAGIC(ex)==QMAGIC ? (0) : \ | |
| 51 | N_SETMAGIC(ex, \ | |
| 52 | N_GETMAGIC(ex), \ | |
| 53 | MID_MACHINE, \ | |
| 54 | N_GETFLAG(ex)|(f))) | |
| 55 | ||
| 56 | #define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC)) | |
| 57 | ||
| 58 | #define N_BADMID(ex) \ | |
| 59 | (N_GETMID(ex) != 0 && N_GETMID(ex) != MID_MACHINE) | |
| 60 | ||
| 61 | #endif | |
| 62 | ||
| 63 | /* | |
| 64 | * FreeBSD does it differently | |
| 65 | */ | |
| 66 | #ifdef FreeBSD | |
| 67 | #define N_SET_FLAG(ex,f) (oldmagic ? (0) : \ | |
| 68 | (netzmagic == 0 ? \ | |
| 69 | N_SETMAGIC(ex, \ | |
| 70 | N_GETMAGIC(ex), \ | |
| 71 | MID_MACHINE, \ | |
| 72 | N_GETFLAG(ex)|(f)) : \ | |
| 73 | N_SETMAGIC_NET(ex, \ | |
| 74 | N_GETMAGIC_NET(ex), \ | |
| 75 | MID_MACHINE, \ | |
| 76 | N_GETFLAG_NET(ex)|(f)) )) | |
| 77 | ||
| 78 | #define N_IS_DYNAMIC(ex) ((N_GETMAGIC_NET(ex) == ZMAGIC) ? \ | |
| 79 | ((N_GETFLAG_NET(ex) & EX_DYNAMIC)) : \ | |
| 80 | ((N_GETFLAG(ex) & EX_DYNAMIC) )) | |
| 81 | #define N_BADMID(ex) 0 | |
| 82 | #endif | |
| 1136f72d PR |
83 | |
| 84 | /* | |
| 85 | * Should be handled by a.out.h ? | |
| 86 | */ | |
| 87 | #define N_ADJUST(ex) (((ex).a_entry < PAGSIZ) ? -PAGSIZ : 0) | |
| 88 | #define TEXT_START(ex) (N_TXTADDR(ex) + N_ADJUST(ex)) | |
| 89 | #define DATA_START(ex) (N_DATADDR(ex) + N_ADJUST(ex)) | |
| 90 | ||
| 91 | #define RELOC_STATICS_THROUGH_GOT_P(r) (0) | |
| 92 | #define JMPSLOT_NEEDS_RELOC (0) | |
| 93 | ||
| 94 | #define md_got_reloc(r) (0) | |
| 95 | ||
| 96 | #define md_get_rt_segment_addend(r,a) md_get_addend(r,a) | |
| 97 | ||
| 98 | /* Width of a Global Offset Table entry */ | |
| 99 | #define GOT_ENTRY_SIZE 4 | |
| 100 | typedef long got_t; | |
| 101 | ||
| 102 | typedef struct jmpslot { | |
| 103 | u_short opcode; | |
| 104 | u_short addr[2]; | |
| 105 | u_short reloc_index; | |
| 106 | #define JMPSLOT_RELOC_MASK 0xffff | |
| 107 | } jmpslot_t; | |
| 108 | ||
| 109 | #define NOP 0x90 | |
| 110 | #define CALL 0xe890 /* NOP + CALL opcode */ | |
| 111 | #define JUMP 0xe990 /* NOP + JMP opcode */ | |
| 27b6ced7 | 112 | #define TRAP 0xcc /* INT 3 */ |
| 1136f72d PR |
113 | |
| 114 | /* | |
| 115 | * Byte swap defs for cross linking | |
| 116 | */ | |
| 117 | ||
| 118 | #if !defined(NEED_SWAP) | |
| 119 | ||
| 120 | #define md_swapin_exec_hdr(h) | |
| 121 | #define md_swapout_exec_hdr(h) | |
| 122 | #define md_swapin_symbols(s,n) | |
| 123 | #define md_swapout_symbols(s,n) | |
| 124 | #define md_swapin_zsymbols(s,n) | |
| 125 | #define md_swapout_zsymbols(s,n) | |
| 126 | #define md_swapin_reloc(r,n) | |
| 127 | #define md_swapout_reloc(r,n) | |
| 6a61ea88 JH |
128 | #define md_swapin__dynamic(l) |
| 129 | #define md_swapout__dynamic(l) | |
| 130 | #define md_swapin_section_dispatch_table(l) | |
| 131 | #define md_swapout_section_dispatch_table(l) | |
| 132 | #define md_swapin_so_debug(d) | |
| 133 | #define md_swapout_so_debug(d) | |
| 1136f72d PR |
134 | #define md_swapin_rrs_hash(f,n) |
| 135 | #define md_swapout_rrs_hash(f,n) | |
| 6a61ea88 JH |
136 | #define md_swapin_sod(l,n) |
| 137 | #define md_swapout_sod(l,n) | |
| 1136f72d PR |
138 | #define md_swapout_jmpslot(j,n) |
| 139 | #define md_swapout_got(g,n) | |
| 140 | #define md_swapin_ranlib_hdr(h,n) | |
| 141 | #define md_swapout_ranlib_hdr(h,n) | |
| 142 | ||
| 143 | #endif /* NEED_SWAP */ | |
| 144 | ||
| 145 | #ifdef CROSS_LINKER | |
| 146 | ||
| 147 | #ifdef NEED_SWAP | |
| 148 | ||
| 149 | /* Define IO byte swapping routines */ | |
| 150 | ||
| 151 | void md_swapin_exec_hdr __P((struct exec *)); | |
| 152 | void md_swapout_exec_hdr __P((struct exec *)); | |
| 153 | void md_swapin_reloc __P((struct relocation_info *, int)); | |
| 154 | void md_swapout_reloc __P((struct relocation_info *, int)); | |
| 155 | void md_swapout_jmpslot __P((jmpslot_t *, int)); | |
| 156 | ||
| 6a61ea88 JH |
157 | #define md_swapin_symbols(s,n) swap_symbols(s,n) |
| 158 | #define md_swapout_symbols(s,n) swap_symbols(s,n) | |
| 159 | #define md_swapin_zsymbols(s,n) swap_zsymbols(s,n) | |
| 160 | #define md_swapout_zsymbols(s,n) swap_zsymbols(s,n) | |
| 161 | #define md_swapin__dynamic(l) swap__dynamic(l) | |
| 162 | #define md_swapout__dynamic(l) swap__dynamic(l) | |
| 163 | #define md_swapin_section_dispatch_table(l) swap_section_dispatch_table(l) | |
| 164 | #define md_swapout_section_dispatch_table(l) swap_section_dispatch_table(l) | |
| 165 | #define md_swapin_so_debug(d) swap_so_debug(d) | |
| 166 | #define md_swapout_so_debug(d) swap_so_debug(d) | |
| 167 | #define md_swapin_rrs_hash(f,n) swap_rrs_hash(f,n) | |
| 168 | #define md_swapout_rrs_hash(f,n) swap_rrs_hash(f,n) | |
| 169 | #define md_swapin_sod(l,n) swapin_sod(l,n) | |
| 170 | #define md_swapout_sod(l,n) swapout_sod(l,n) | |
| 171 | #define md_swapout_got(g,n) swap_longs((long*)(g),n) | |
| 172 | #define md_swapin_ranlib_hdr(h,n) swap_ranlib_hdr(h,n) | |
| 173 | #define md_swapout_ranlib_hdr(h,n) swap_ranlib_hdr(h,n) | |
| 1136f72d PR |
174 | |
| 175 | #define md_swap_short(x) ( (((x) >> 8) & 0xff) | (((x) & 0xff) << 8) ) | |
| 176 | ||
| 177 | #define md_swap_long(x) ( (((x) >> 24) & 0xff ) | (((x) >> 8 ) & 0xff00 ) | \ | |
| 178 | (((x) << 8 ) & 0xff0000) | (((x) << 24) & 0xff000000)) | |
| 179 | ||
| 180 | #define get_byte(p) ( ((unsigned char *)(p))[0] ) | |
| 181 | ||
| 182 | #define get_short(p) ( ( ((unsigned char *)(p))[1] << 8) | \ | |
| 183 | ( ((unsigned char *)(p))[0] ) \ | |
| 184 | ) | |
| 185 | #define get_long(p) ( ( ((unsigned char *)(p))[3] << 24) | \ | |
| 186 | ( ((unsigned char *)(p))[2] << 16) | \ | |
| 187 | ( ((unsigned char *)(p))[1] << 8 ) | \ | |
| 188 | ( ((unsigned char *)(p))[0] ) \ | |
| 189 | ) | |
| 190 | ||
| 191 | #define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); } | |
| 192 | ||
| 193 | #define put_short(p, v) { ((unsigned char *)(p))[1] = \ | |
| 194 | ((((unsigned long)(v)) >> 8) & 0xff); \ | |
| 195 | ((unsigned char *)(p))[0] = \ | |
| 196 | ((((unsigned long)(v)) ) & 0xff); } | |
| 197 | ||
| 198 | #define put_long(p, v) { ((unsigned char *)(p))[3] = \ | |
| 199 | ((((unsigned long)(v)) >> 24) & 0xff); \ | |
| 200 | ((unsigned char *)(p))[2] = \ | |
| 201 | ((((unsigned long)(v)) >> 16) & 0xff); \ | |
| 202 | ((unsigned char *)(p))[1] = \ | |
| 203 | ((((unsigned long)(v)) >> 8) & 0xff); \ | |
| 204 | ((unsigned char *)(p))[0] = \ | |
| 205 | ((((unsigned long)(v)) ) & 0xff); } | |
| 206 | ||
| 207 | #else /* We need not swap, but must pay attention to alignment: */ | |
| 208 | ||
| 209 | #define md_swap_short(x) (x) | |
| 210 | #define md_swap_long(x) (x) | |
| 211 | ||
| 212 | #define get_byte(p) ( ((unsigned char *)(p))[0] ) | |
| 213 | ||
| 214 | #define get_short(p) ( ( ((unsigned char *)(p))[0] << 8) | \ | |
| 215 | ( ((unsigned char *)(p))[1] ) \ | |
| 216 | ) | |
| 217 | ||
| 218 | #define get_long(p) ( ( ((unsigned char *)(p))[0] << 24) | \ | |
| 219 | ( ((unsigned char *)(p))[1] << 16) | \ | |
| 220 | ( ((unsigned char *)(p))[2] << 8 ) | \ | |
| 221 | ( ((unsigned char *)(p))[3] ) \ | |
| 222 | ) | |
| 223 | ||
| 224 | ||
| 225 | #define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); } | |
| 226 | ||
| 227 | #define put_short(p, v) { ((unsigned char *)(p))[0] = \ | |
| 228 | ((((unsigned long)(v)) >> 8) & 0xff); \ | |
| 229 | ((unsigned char *)(p))[1] = \ | |
| 230 | ((((unsigned long)(v)) ) & 0xff); } | |
| 231 | ||
| 232 | #define put_long(p, v) { ((unsigned char *)(p))[0] = \ | |
| 233 | ((((unsigned long)(v)) >> 24) & 0xff); \ | |
| 234 | ((unsigned char *)(p))[1] = \ | |
| 235 | ((((unsigned long)(v)) >> 16) & 0xff); \ | |
| 236 | ((unsigned char *)(p))[2] = \ | |
| 237 | ((((unsigned long)(v)) >> 8) & 0xff); \ | |
| 238 | ((unsigned char *)(p))[3] = \ | |
| 239 | ((((unsigned long)(v)) ) & 0xff); } | |
| 240 | ||
| 241 | #endif /* NEED_SWAP */ | |
| 242 | ||
| 243 | #else /* Not a cross linker: use native */ | |
| 244 | ||
| 245 | #define md_swap_short(x) (x) | |
| 246 | #define md_swap_long(x) (x) | |
| 247 | ||
| 248 | #define get_byte(where) (*(char *)(where)) | |
| 249 | #define get_short(where) (*(short *)(where)) | |
| 250 | #define get_long(where) (*(long *)(where)) | |
| 251 | ||
| 252 | #define put_byte(where,what) (*(char *)(where) = (what)) | |
| 253 | #define put_short(where,what) (*(short *)(where) = (what)) | |
| 254 | #define put_long(where,what) (*(long *)(where) = (what)) | |
| 255 | ||
| 256 | #endif /* CROSS_LINKER */ | |
| 257 |