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1.1 root 1: /* (-lgl
2: * COHERENT Version 3.2.2
3: * Copyright (c) 1982, 1992 by Mark Williams Company.
4: * All rights reserved. May not be copied without permission.
5: -lgl) */
6: /*
7: * l.out.h
8: * This defines the format of the 'l.out' file
9: * (assembler output, linkage editor input and output).
10: * It also gives the namelist structure for the nlist routine.
11: */
12:
13: #ifndef L_OUT_H
14: #define L_OUT_H L_OUT_H
15:
16: #include <sys/types.h>
17:
18: #define NCPLN 16 /* Chars in loader name */
19: #define NLSEG 9 /* No. of segments */
20: #define NXSEG 6 /* No. of segments used by exec */
21: #define L_MAGIC 0407 /* Magic number */
22:
23: /*
24: * Header.
25: * This lives at the front of the file and gives control information
26: * and the sizes of the other segments of the file.
27: */
28: struct ldheader {
29: short l_magic; /* Magic number */
30: short l_flag; /* Flags */
31: short l_machine; /* Type of target machine */
32: unsigned short l_entry; /* Entrypoint */
33: fsize_t l_ssize[NLSEG]; /* Segment sizes */
34: };
35:
36: /* Flags. */
37: #define LF_SHR 01 /* Bound shared */
38: #define LF_SEP 02 /* Bound separated */
39: #define LF_NRB 04 /* No reloc. bits */
40: #define LF_KER 010 /* Loadable driver */
41:
42: #define LF_286 0 /* dummy mode [386/exec.c] */
43: #define LF_386 0x80000000 /* dummy mode [386/exec.c] */
44:
45: /* Formats. */
46: #define AFMT "%06o" /* Address */
47:
48: /* Machines. */
49: #include <mtype.h>
50:
51: /* Segments. */
52: #define L_SHRI 0 /* Shared Instruction space */
53: #define L_PRVI 1 /* Private Instruction space */
54: #define L_BSSI 2 /* Uninitialized Instruction */
55: #define L_SHRD 3 /* Shared Data space */
56: #define L_PRVD 4 /* Private Data space */
57: #define L_BSSD 5 /* Uninitialized Data space */
58: #define L_DEBUG 6 /* Debug tables */
59: #define L_SYM 7 /* Symbols */
60: #define L_REL 8 /* Relocation */
61: #define L_ABS 9 /* Absolute (symbol table) */
62: #define L_REF 10 /* Reference (symbol table) */
63:
64: /*
65: * Symbols.
66: * These live in the 'L_SYM' section of the file;
67: * the size of this section determines the number of symbols.
68: */
69: struct ldsym {
70: char ls_id[NCPLN]; /* Symbol name */
71: short ls_type; /* Global + Seg. */
72: unsigned short ls_addr; /* Value of symbol */
73: };
74:
75: /*
76: * The nlist structure for the nlist routine.
77: */
78: struct nlist {
79: char n_name[NCPLN]; /* Symbol name */
80: short n_type; /* Type flag */
81: unsigned short n_value; /* Value */
82: };
83:
84: #define L_GLOBAL 020
85:
86: /*
87: * Relocation.
88: * Relocation is a byte stream.
89: * The first is an opcode.
90: * The next two bytes are the address of relocation.
91: */
92:
93: #define LR_SEG 017 /* Seg., L_SYM => Sym. based */
94: #define LR_PCR 020 /* PC Rel. flag */
95: #define LR_OP 0340 /* Opcode */
96:
97: #define LR_BYTE (0<<5) /* Rel. a byte */
98: #define LR_WORD (1<<5) /* Rel. a word */
99:
100: #endif
101:
102: /* end of l.out.h */
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