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comparison old-trunk/lwlink/lwlink.h @ 339:eb230fa7d28e

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Prepare for migration to hg
author lost
date Fri, 19 Mar 2010 02:54:14 +0000
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338:e7885b3ee266 339:eb230fa7d28e
1 /*
2 lwlink.h
3 Copyright © 2009 William Astle
4
5 This file is part of LWLINK.
6
7 LWLINK is free software: you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation, either version 3 of the License, or (at your option) any later
10 version.
11
12 This program is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 more details.
16
17 You should have received a copy of the GNU General Public License along with
18 this program. If not, see <http://www.gnu.org/licenses/>.
19
20 Contains the main defs used by the linker
21 */
22
23
24 #ifndef __lwlink_h_seen__
25 #define __lwlink_h_seen__
26
27 #include "expr.h"
28
29 #define OUTPUT_DECB 0 // DECB multirecord format
30 #define OUTPUT_RAW 1 // raw sequence of bytes
31 #define OUTPUT_LWEX0 2 // LWOS LWEX binary version 0
32
33 typedef struct symtab_s symtab_t;
34 struct symtab_s
35 {
36 unsigned char *sym; // symbol name
37 int offset; // local offset
38 // int realval; // resolved value
39 symtab_t *next; // next symbol
40 };
41
42 #define RELOC_NORM 0 // all default (16 bit)
43 #define RELOC_8BIT 1 // only use the low 8 bits for the reloc
44 typedef struct reloc_s reloc_t;
45 struct reloc_s
46 {
47 int offset; // where in the section
48 int flags; // flags for the relocation
49 lw_expr_stack_t *expr; // the expression to calculate it
50 reloc_t *next; // ptr to next relocation
51 };
52
53 typedef struct fileinfo_s fileinfo_t;
54
55 #define SECTION_BSS 1
56 typedef struct
57 {
58 unsigned char *name; // name of the section
59 int flags; // section flags
60 int codesize; // size of the code
61 unsigned char *code; // pointer to the code
62 int loadaddress; // the actual load address of the section
63 int processed; // was the section processed yet?
64
65 symtab_t *localsyms; // local symbol table
66 symtab_t *exportedsyms; // exported symbols table
67
68 reloc_t *incompletes; // table of incomplete references
69
70 fileinfo_t *file; // the file we are in
71 } section_t;
72
73 struct fileinfo_s
74 {
75 char *filename;
76 unsigned char *filedata;
77 long filesize;
78 section_t *sections;
79 int nsections;
80 int islib; // set to true if the file is a "-l" option
81
82 int forced; // set to true if the file is a "forced" include
83
84 // "sub" files (like in archives or libraries)
85 int nsubs;
86 fileinfo_t **subs;
87 fileinfo_t *parent;
88 };
89
90 struct section_list
91 {
92 section_t *ptr; // ptr to section structure
93 int forceaddr; // was this force to an address by the link script?
94 };
95
96 #ifndef __link_c_seen__
97 extern struct section_list *sectlist;
98 extern int nsects;
99 #endif
100
101
102 #ifndef __lwlink_c_seen__
103
104 extern int debug_level;
105 extern int outformat;
106 extern char *outfile;
107 extern int ninputfiles;
108 extern fileinfo_t **inputfiles;
109 extern char *scriptfile;
110
111 extern int nlibdirs;
112 extern char **libdirs;
113
114 extern int nscriptls;
115 extern char **scriptls;
116
117 extern int symerr;
118
119 extern char *map_file;
120
121 #define __lwlink_E__ extern
122 #else
123 #define __lwlink_E__
124 #endif // __lwlink_c_seen__
125
126 __lwlink_E__ void add_input_file(char *fn);
127 __lwlink_E__ void add_input_library(char *fn);
128 __lwlink_E__ void add_library_search(char *fn);
129 __lwlink_E__ void add_section_base(char *fn);
130
131 #undef __lwlink_E__
132
133 struct scriptline_s
134 {
135 char *sectname; // name of section, NULL for wildcard
136 int loadat; // address to load at (or -1)
137 int noflags; // flags to NOT have
138 int yesflags; // flags to HAVE
139 };
140
141 typedef struct
142 {
143 int nlines; // number of lines in the script
144 struct scriptline_s *lines; // the parsed script lines (section)
145 int padsize; // the size to pad to, -1 for none
146 char *execsym; // entry point symbol
147 int execaddr; // execution address (entry point)
148 int stacksize; // stack size
149 } linkscript_t;
150
151 #ifndef __script_c_seen__
152 extern linkscript_t linkscript;
153 #endif
154
155 #endif //__lwlink_h_seen__