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68608c33 | 1 | /* |
ad787160 C |
2 | * Copyright (c) 1992, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
68608c33 CT |
4 | * |
5 | * This software was developed by the Computer Systems Engineering group | |
6 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and | |
7 | * contributed to Berkeley. | |
8 | * | |
b480239a KB |
9 | * All advertising materials mentioning features or use of this software |
10 | * must display the following acknowledgement: | |
11 | * This product includes software developed by the University of | |
1869bdc0 | 12 | * California, Lawrence Berkeley Laboratory. |
b480239a | 13 | * |
ad787160 C |
14 | * Redistribution and use in source and binary forms, with or without |
15 | * modification, are permitted provided that the following conditions | |
16 | * are met: | |
17 | * 1. Redistributions of source code must retain the above copyright | |
18 | * notice, this list of conditions and the following disclaimer. | |
19 | * 2. Redistributions in binary form must reproduce the above copyright | |
20 | * notice, this list of conditions and the following disclaimer in the | |
21 | * documentation and/or other materials provided with the distribution. | |
22 | * 3. All advertising materials mentioning features or use of this software | |
23 | * must display the following acknowledgement: | |
24 | * This product includes software developed by the University of | |
25 | * California, Berkeley and its contributors. | |
26 | * 4. Neither the name of the University nor the names of its contributors | |
27 | * may be used to endorse or promote products derived from this software | |
28 | * without specific prior written permission. | |
29 | * | |
30 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
31 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
32 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
33 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
34 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
35 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
36 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
37 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
38 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
39 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
40 | * SUCH DAMAGE. | |
68608c33 | 41 | * |
ad787160 | 42 | * @(#)exec.h 8.1 (Berkeley) 6/11/93 |
68608c33 | 43 | * |
1869bdc0 | 44 | * from: $Header: exec.h,v 1.9 93/04/20 11:14:45 torek Exp $ |
68608c33 CT |
45 | */ |
46 | ||
47 | /* | |
48 | * __LDPGSZ is the page size used by the linker and by exec(). | |
49 | * It may be some multiple of the ``normal'' page size, so that, e.g., | |
50 | * the same binaries can be run on hardware with different page sizes | |
51 | * that otherwise use the same instruction set. It must be no larger | |
52 | * than CLBYTES (in param.h). | |
53 | */ | |
54 | #define __LDPGSZ 8192 | |
55 | ||
56 | /* Valid magic number check. */ | |
57 | #define N_BADMAG(ex) \ | |
58 | ((ex).a_magic != ZMAGIC && (ex).a_magic != NMAGIC && \ | |
59 | (ex).a_magic != OMAGIC) | |
60 | ||
61 | /* | |
62 | * N_TXTADDR is the address of the first executable instruction: that is, | |
63 | * the place the pc could begin after an a.out is loaded, in order to run | |
64 | * the instructions in that a.out. The pc will actually be set to ex.a_entry | |
65 | * but this is the first place it could possibly reference. | |
66 | * | |
67 | * On the SPARC, binaries begin at __LDPGSZ, i.e., page 1. | |
68 | */ | |
69 | #define N_TXTADDR(ex) 8192 | |
70 | ||
71 | /* Address of the bottom of the data segment. */ | |
72 | #define N_DATADDR(ex) \ | |
b36a531c CT |
73 | (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text : \ |
74 | (((ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1)))) | |
68608c33 CT |
75 | |
76 | /* | |
77 | * N_TXTOFF is the offset within an a.out file of the first executable | |
78 | * instruction: that is, the offset in the a.out of the byte that winds | |
79 | * up at N_TXTADDR. | |
80 | * | |
81 | * On the SPARC, the a.out header is included in the executable when running | |
82 | * a ZMAGIC file (but not for OMAGIC and NMAGIC). | |
83 | */ | |
84 | #define N_TXTOFF(ex) ((ex).a_magic == ZMAGIC ? 0 : sizeof(struct exec)) | |
85 | ||
86 | /* Data segment offset. */ | |
87 | #define N_DATOFF(ex) \ | |
88 | (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \ | |
b36a531c | 89 | (((ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1)))) |
68608c33 CT |
90 | |
91 | /* Symbol table offset. */ | |
92 | #define N_SYMOFF(ex) \ | |
93 | (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \ | |
94 | (ex).a_drsize) | |
95 | ||
96 | /* String table offset. */ | |
97 | #define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms) | |
98 | ||
99 | /* Description of the object file header (a.out format). */ | |
100 | struct exec { | |
101 | u_char a_dynamic:1; /* dynamically linked */ | |
102 | u_char a_toolversion:7;/* Sun toolset version XXX */ | |
103 | ||
104 | #define MID_ZERO 0 /* unknown - implementation dependent */ | |
105 | #define MID_SUN010 1 /* sun 68010/68020 binary */ | |
106 | #define MID_SUN020 2 /* sun 68020-only binary */ | |
107 | #define MID_SUN_SPARC 3 /* sparc binary */ | |
108 | #define MID_HP200 200 /* hp200 (68010) BSD binary */ | |
109 | #define MID_HP300 300 /* hp300 (68020+68881) BSD binary */ | |
110 | #define MID_HPUX 0x20C /* hp200/300 HP-UX binary */ | |
111 | #define MID_HPUX800 0x20B /* hp800 HP-UX binary */ | |
112 | u_char a_mid; /* machine ID */ | |
113 | ||
114 | #define OMAGIC 0407 /* old impure format */ | |
115 | #define NMAGIC 0410 /* read-only text */ | |
116 | #define ZMAGIC 0413 /* demand load format */ | |
117 | u_short a_magic; /* magic number */ | |
118 | ||
119 | u_long a_text; /* text segment size */ | |
120 | u_long a_data; /* initialized data size */ | |
121 | u_long a_bss; /* uninitialized data size */ | |
122 | u_long a_syms; /* symbol table size */ | |
123 | u_long a_entry; /* entry point */ | |
124 | u_long a_trsize; /* text relocation size */ | |
125 | u_long a_drsize; /* data relocation size */ | |
126 | }; | |
127 | #define a_machtype a_mid /* SUN compatibility */ |