Annotation of sys/sys/exec_aout.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: exec_aout.h,v 1.22 2006/10/06 20:58:17 miod Exp $ */
! 2: /* $NetBSD: exec_aout.h,v 1.15 1996/05/18 17:20:54 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1993, 1994 Christopher G. Demetriou
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by Christopher G. Demetriou.
! 19: * 4. The name of the author may not be used to endorse or promote products
! 20: * derived from this software without specific prior written permission
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: */
! 33:
! 34: #ifndef N_PAGSIZ
! 35: #define N_PAGSIZ(ex) (__LDPGSZ)
! 36: #endif
! 37:
! 38: /*
! 39: * Header prepended to each a.out file.
! 40: * only manipulate the a_midmag field via the
! 41: * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below.
! 42: */
! 43: struct exec {
! 44: u_int32_t a_midmag; /* htonl(flags<<26|mid<<16|magic) */
! 45: u_int32_t a_text; /* text segment size */
! 46: u_int32_t a_data; /* initialized data size */
! 47: u_int32_t a_bss; /* uninitialized data size */
! 48: u_int32_t a_syms; /* symbol table size */
! 49: u_int32_t a_entry; /* entry point */
! 50: u_int32_t a_trsize; /* text relocation size */
! 51: u_int32_t a_drsize; /* data relocation size */
! 52: };
! 53:
! 54: /* a_magic */
! 55: #define OMAGIC 0407 /* old impure format */
! 56: #define NMAGIC 0410 /* read-only text */
! 57: #define ZMAGIC 0413 /* demand load format */
! 58: #define QMAGIC 0314 /* "compact" demand load format; deprecated */
! 59:
! 60: /*
! 61: * a_mid - keep sorted in numerical order for sanity's sake
! 62: * ensure that: 0 < mid < 0x3ff
! 63: */
! 64: #define MID_ZERO 0 /* unknown - implementation dependent */
! 65: #define MID_SUN010 1 /* sun 68010/68020 binary */
! 66: #define MID_SUN020 2 /* sun 68020-only binary */
! 67: #define MID_PC386 100 /* 386 PC binary. (so quoth BFD) */
! 68: #define MID_ROMPAOS 104 /* old IBM RT */
! 69: #define MID_I386 134 /* i386 BSD binary */
! 70: #define MID_M68K 135 /* m68k BSD binary with 8K page sizes */
! 71: #define MID_M68K4K 136 /* DO NOT USE: m68k BSD binary with 4K page sizes */
! 72: #define MID_NS32532 137 /* ns32532 */
! 73: #define MID_SPARC 138 /* sparc */
! 74: #define MID_PMAX 139 /* pmax */
! 75: #define MID_VAX1K 140 /* vax 1k page size */
! 76: #define MID_ALPHA 141 /* Alpha BSD binary */
! 77: #define MID_MIPS 142 /* big-endian MIPS */
! 78: #define MID_ARM6 143 /* ARM6 */
! 79: #define MID_SH3 145 /* SH3 */
! 80: #define MID_POWERPC 149 /* big-endian PowerPC */
! 81: #define MID_VAX 150 /* vax */
! 82: #define MID_SPARC64 151 /* LP64 sparc */
! 83: #define MID_MIPS2 152 /* MIPS2 */
! 84: #define MID_M88K 153 /* m88k BSD binary */
! 85: #define MID_HPPA 154 /* hppa */
! 86: #define MID_AMD64 157 /* AMD64 */
! 87: #define MID_MIPS64 158 /* big-endian MIPS64 */
! 88: #define MID_HP200 200 /* hp200 (68010) BSD binary */
! 89: #define MID_HP300 300 /* hp300 (68020+68881) BSD binary */
! 90: #define MID_HPUX 0x20C /* hp200/300 HP-UX binary */
! 91: #define MID_HPUX800 0x20B /* hp800 HP-UX binary pa1.0 */
! 92: #define MID_HPPA11 0x210 /* hp700 HP-UX binary pa1.1 */
! 93: #define MID_HPPA20 0x214 /* hp700 HP-UX binary pa2.0 */
! 94:
! 95: /*
! 96: * a_flags
! 97: */
! 98: #define EX_DYNAMIC 0x20
! 99: #define EX_PIC 0x10
! 100: #define EX_DPMASK 0x30
! 101: /*
! 102: * Interpretation of the (a_flags & EX_DPMASK) bits:
! 103: *
! 104: * 00 traditional executable or object file
! 105: * 01 object file contains PIC code (set by `as -k')
! 106: * 10 dynamic executable
! 107: * 11 position independent executable image
! 108: * (eg. a shared library)
! 109: *
! 110: */
! 111:
! 112: /*
! 113: * The a.out structure's a_midmag field is a network-byteorder encoding
! 114: * of this int
! 115: * FFFFFFmmmmmmmmmmMMMMMMMMMMMMMMMM
! 116: * Where `F' is 6 bits of flag like EX_DYNAMIC,
! 117: * `m' is 10 bits of machine-id like MID_I386, and
! 118: * `M' is 16 bits worth of magic number, ie. ZMAGIC.
! 119: * The macros below will set/get the needed fields.
! 120: */
! 121: #define N_GETMAGIC(ex) \
! 122: ( (((ex).a_midmag)&0xffff0000) ? (ntohl(((ex).a_midmag))&0xffff) : ((ex).a_midmag))
! 123: #define N_GETMAGIC2(ex) \
! 124: ( (((ex).a_midmag)&0xffff0000) ? (ntohl(((ex).a_midmag))&0xffff) : \
! 125: (((ex).a_midmag) | 0x10000) )
! 126: #define N_GETMID(ex) \
! 127: ( (((ex).a_midmag)&0xffff0000) ? ((ntohl(((ex).a_midmag))>>16)&0x03ff) : MID_ZERO )
! 128: #define N_GETFLAG(ex) \
! 129: ( (((ex).a_midmag)&0xffff0000) ? ((ntohl(((ex).a_midmag))>>26)&0x3f) : 0 )
! 130: #define N_SETMAGIC(ex,mag,mid,flag) \
! 131: ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
! 132: (((mag)&0xffff)) ) )
! 133:
! 134: #define N_ALIGN(ex,x) \
! 135: (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC ? \
! 136: ((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x))
! 137:
! 138: /* Valid magic number check. */
! 139: #define N_BADMAG(ex) \
! 140: (N_GETMAGIC(ex) != NMAGIC && N_GETMAGIC(ex) != OMAGIC && \
! 141: N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC)
! 142:
! 143: /* Address of the bottom of the text segment. */
! 144: #define N_TXTADDR(ex) (N_GETMAGIC2(ex) == (ZMAGIC|0x10000) ? 0 : __LDPGSZ)
! 145:
! 146: /* Address of the bottom of the data segment. */
! 147: #define N_DATADDR(ex) \
! 148: (N_GETMAGIC(ex) == OMAGIC ? N_TXTADDR(ex) + (ex).a_text : \
! 149: (N_TXTADDR(ex) + (ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1))
! 150:
! 151: /* Address of the bottom of the bss segment. */
! 152: #define N_BSSADDR(ex) \
! 153: (N_DATADDR(ex) + (ex).a_data)
! 154:
! 155: /* Text segment offset. */
! 156: #define N_TXTOFF(ex) \
! 157: ( N_GETMAGIC2(ex)==ZMAGIC || N_GETMAGIC2(ex)==(QMAGIC|0x10000) ? \
! 158: 0 : (N_GETMAGIC2(ex)==(ZMAGIC|0x10000) ? __LDPGSZ : \
! 159: sizeof(struct exec)) )
! 160:
! 161: /* Data segment offset. */
! 162: #define N_DATOFF(ex) \
! 163: N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
! 164:
! 165: /* Text relocation table offset. */
! 166: #define N_TRELOFF(ex) \
! 167: (N_DATOFF(ex) + (ex).a_data)
! 168:
! 169: /* Data relocation table offset. */
! 170: #define N_DRELOFF(ex) \
! 171: (N_TRELOFF(ex) + (ex).a_trsize)
! 172:
! 173: /* Symbol table offset. */
! 174: #define N_SYMOFF(ex) \
! 175: (N_DRELOFF(ex) + (ex).a_drsize)
! 176:
! 177: /* String table offset. */
! 178: #define N_STROFF(ex) \
! 179: (N_SYMOFF(ex) + (ex).a_syms)
! 180:
! 181:
! 182: #ifdef _KERNEL
! 183:
! 184: /* the "a.out" format's entry in the exec switch */
! 185: int exec_aout_makecmds(struct proc *, struct exec_package *);
! 186:
! 187: /* functions which prepare various a.out executable types */
! 188: /*
! 189: * MI portion
! 190: */
! 191: int exec_aout_prep_zmagic(struct proc *, struct exec_package *);
! 192: int exec_aout_prep_nmagic(struct proc *, struct exec_package *);
! 193: int exec_aout_prep_omagic(struct proc *, struct exec_package *);
! 194:
! 195: /* For compatibility modules */
! 196: int exec_aout_prep_oldzmagic(struct proc *, struct exec_package *);
! 197: int exec_aout_prep_oldnmagic(struct proc *, struct exec_package *);
! 198: int exec_aout_prep_oldomagic(struct proc *, struct exec_package *);
! 199:
! 200: /*
! 201: * MD portion
! 202: */
! 203: #if !defined(cpu_exec_aout_makecmds)
! 204: int cpu_exec_aout_makecmds(struct proc *, struct exec_package *);
! 205: #endif
! 206:
! 207: #endif /* _KERNEL */
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