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annotate lwasm/lwasm.h @ 241:d0e9dbe9afbe

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Add new heuristic for resolving instruction sizes. Add new heuristic for resolving instruction sizes. This applies to the the decision between extended and base page addressing by calculating the range of possible addresses (if reasonably knowable) and deciding on whether to force extended addressing based on that. (If the whole range is outside the direct page, extended addressing is required.)
author William Astle <lost@l-w.ca>
date Sun, 23 Sep 2012 13:06:43 -0600
parents 7c2c2239ec9c
children d4ac484d0ec6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 lwasm.h
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #ifndef ___lwasm_h_seen___
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23 #define ___lwasm_h_seen___
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24
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25 #include <lw_expr.h>
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26 #include <lw_stringlist.h>
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27 #include <lw_stack.h>
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29
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30 // these are allowed chars BELOW 0x80 for symbols
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31 // first is symbol start chars, second is anywhere in symbol
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32 #define SSYMCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_@$"
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33 #define SYMCHARS SSYMCHARS ".?0123456789"
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34
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35 typedef struct asmstate_s asmstate_t;
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36
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37 enum
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38 {
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39 lwasm_expr_linelen = 1, // length of ref'd line
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40 lwasm_expr_lineaddr = 2, // addr of ref'd line
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41 lwasm_expr_nextbp = 3, // next branch point
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42 lwasm_expr_prevbp = 4, // previous branch point
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43 lwasm_expr_syment = 5, // symbol table entry
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44 lwasm_expr_import = 6, // symbol import entry
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45 lwasm_expr_secbase = 7, // section base address
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46 lwasm_expr_linedaddr = 8, // data address of the line
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47 lwasm_expr_linedlen = 9 // data length of the line
0
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48 };
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49
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50 enum lwasm_output_e
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51 {
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52 OUTPUT_DECB = 0, // DECB multirecord format
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53 OUTPUT_RAW, // raw sequence of bytes
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54 OUTPUT_OBJ, // proprietary object file format
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55 OUTPUT_RAWREL, // raw bytes where ORG causes a SEEK in the file
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56 OUTPUT_OS9 // os9 module target
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57 };
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58
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59 enum lwasm_target_e
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60 {
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61 TARGET_6309 = 0, // target 6309 CPU
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62 TARGET_6809 // target 6809 CPU (no 6309 ops)
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63 };
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64
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65 enum lwasm_flags_e
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66 {
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67 FLAG_LIST = 0x0001,
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68 FLAG_DEPEND = 0x0002,
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69 FLAG_SYMBOLS = 0x004,
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70 FLAG_DEPENDNOERR = 0x0008,
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71 FLAG_UNICORNS = 0x0010,
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72 FLAG_NONE = 0
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73 };
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74
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75 enum lwasm_pragmas_e
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76 {
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77 PRAGMA_NONE = 0, // no pragmas in effect
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78 PRAGMA_DOLLARNOTLOCAL = 0x0001, // dollar sign does not make a symbol local
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79 PRAGMA_NOINDEX0TONONE = 0x0002, // do not change implicit 0,R to ,R
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80 PRAGMA_UNDEFEXTERN = 0x0004, // undefined symbols are considered to be external
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81 PRAGMA_CESCAPES = 0x0008, // allow C style escapes in fcc, fcs, fcn, etc.
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82 PRAGMA_IMPORTUNDEFEXPORT = 0x0010, // imports symbol if undefined upon export
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83 PRAGMA_PCASPCR = 0x0020, // treats ,PC as ,PCR instead of constant offset
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84 PRAGMA_SHADOW = 0x0040, // allow macros to shadow builtin operations
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85 PRAGMA_NOLIST = 0x0080, // don't show line in listing
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86 PRAGMA_AUTOBRANCHLENGTH = 0x0100, // automatically select proper length for relative branches
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87 PRAGMA_EXPORT = 0x0200, // export symbols by default, unless local
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88 PRAGMA_SYMBOLNOCASE = 0x400, // symbols defined under this pragma are matched case insensitively
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89 PRAGMA_CONDUNDEFZERO = 0x800 // treat undefined symbols as zero in conditionals during pass 1
0
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90 };
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91
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92
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93 enum
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94 {
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95 section_flag_bss = 1, // BSS section
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96 section_flag_constant = 2, // constants - no base offset
0
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97 section_flag_none = 0 // no flags
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98 };
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99
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100 typedef struct reloctab_s reloctab_t;
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101 struct reloctab_s
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102 {
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103 lw_expr_t offset; // offset of relocation
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104 int size; // size of relocation
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105 lw_expr_t expr; // relocation expression
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106 reloctab_t *next;
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107 };
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108
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109 typedef struct sectiontab_s sectiontab_t;
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110 struct sectiontab_s
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111 {
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112 char *name; // section name
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113 int flags; // section flags;
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114 lw_expr_t offset; // offset for next instance
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115 int oblen; // size of section output
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116 int obsize; // size of output buffer
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117 unsigned char *obytes; // output buffer
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118 reloctab_t *reloctab; // table of relocations
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119 sectiontab_t *next;
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120 };
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121
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122 typedef struct lwasm_error_s lwasm_error_t;
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123 struct lwasm_error_s
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124 {
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125 char *mess; // actual error message
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126 int charpos; // character position on line where parsing stopped
0
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127 lwasm_error_t *next; // ptr to next error
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128 };
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129
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130 struct line_expr_s
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131 {
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132 lw_expr_t expr;
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133 int id;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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134 struct line_expr_s *next;
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135 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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136
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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137 typedef struct line_s line_t;
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138
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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139 typedef struct exportlist_s exportlist_t;
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140 struct exportlist_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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141 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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142 char *symbol; // symbol to export
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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143 struct symtabe *se; // symbol table entry
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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144 line_t *line; // line the export is on
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145 exportlist_t *next; // next in the export list
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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146 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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147
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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148 typedef struct importlist_s importlist_t;
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149 struct importlist_s
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150 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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151 char *symbol; // symbol to import
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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152 importlist_t *next; // next in the import list
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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153 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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154
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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155 struct line_s
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156 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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157 lw_expr_t addr; // assembly address of the line
142
697bc543368c Implement distinction between . and * for OS9 modules
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diff changeset
158 lw_expr_t daddr; // data address of the line (os9 only)
0
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159 int len; // the "size" this line occupies (address space wise) (-1 if unknown)
142
697bc543368c Implement distinction between . and * for OS9 modules
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160 int dlen; // the data "size" this line occupies (-1 if unknown)
241
d0e9dbe9afbe Add new heuristic for resolving instruction sizes.
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parents: 226
diff changeset
161 int minlen; // minimum length
d0e9dbe9afbe Add new heuristic for resolving instruction sizes.
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parents: 226
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162 int maxlen; // maximum length
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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163 int insn; // number of insn in insn table
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164 int symset; // set if the line symbol was consumed by the instruction
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165 char *sym; // symbol, if any, on the line
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166 unsigned char *output; // output bytes
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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167 int outputl; // size of output
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168 int outputbl; // size of output buffer
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169 int dpval; // direct page value
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170 lwasm_error_t *err; // list of errors
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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171 lwasm_error_t *warn; // list of errors
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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172 line_t *prev; // previous line
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diff changeset
173 line_t *next; // next line
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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174 int inmod; // inside a module?
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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175 sectiontab_t *csect; // which section are we in?
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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176 struct line_expr_s *exprs; // expressions used during parsing
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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177 char *lstr; // string passed forward
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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178 int pb; // pass forward post byte
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 int lint; // pass forward integer
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180 int lint2; // another pass forward integer
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181 asmstate_t *as; // assembler state data ptr
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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182 int pragmas; // pragmas in effect for the line
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183 int context; // the symbol context number
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184 char *ltext; // line number
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185 char *linespec; // line spec
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 int lineno; // line number
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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187 int soff; // struct offset (for listings)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 int dshow; // data value to show (for listings)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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189 int dsize; // set to 1 for 8 bit dshow value
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 int isbrpt; // set to 1 if this line is a branch point
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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191 struct symtabe *dptr; // symbol value to display
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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192
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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193 int noexpand_start; // start of a no-expand block
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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194 int noexpand_end; // end of a no-expand block
219
afd50d6b4113 Add --preprocess option
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parents: 211
diff changeset
195 int hideline; // set if we're going to hide this line on output
0
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196 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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197
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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198 enum
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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199 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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200 symbol_flag_set = 1, // symbol was used with "set"
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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201 symbol_flag_nocheck = 2, // do not check symbol characters
81
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
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parents: 73
diff changeset
202 symbol_flag_nolist = 4, // no not show symbol in symbol table
207
07e1fac76321 Added pragma to allow non case sensitive symbols
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parents: 206
diff changeset
203 symbol_flag_nocase = 8, // do not match case of symbol
0
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204 symbol_flag_none = 0 // no flags
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205 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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206
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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207 struct symtabe
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209 char *symbol; // the name of the symbol
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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210 int context; // symbol context (-1 for global)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
211 int version; // version of the symbol (for "set")
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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212 int flags; // flags for the symbol
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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213 sectiontab_t *section; // section the symbol is defined in
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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214 lw_expr_t value; // symbol value
195
17bd59f045af Changed symbol table to use a binary tree.
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parents: 156
diff changeset
215 struct symtabe *left; // left subtree pointer
17bd59f045af Changed symbol table to use a binary tree.
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parents: 156
diff changeset
216 struct symtabe *right; // right subtree pointer
17bd59f045af Changed symbol table to use a binary tree.
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parents: 156
diff changeset
217 struct symtabe *nextver; // next lower version
0
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218 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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219
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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220 typedef struct
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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221 {
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222 struct symtabe *head; // start of symbol table
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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223 } symtab_t;
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224
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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225 typedef struct macrotab_s macrotab_t;
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226 struct macrotab_s
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227 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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228 char *name; // name of macro
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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229 char **lines; // macro lines
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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230 int numlines; // number lines in macro
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
231 int flags; // flags for the macro
0
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diff changeset
232 macrotab_t *next; // next macro in list
222
03f7192fcd20 Add --unicorns option for IDE integration
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parents: 219
diff changeset
233 line_t *definedat; // the line where the macro definition starts
0
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234 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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235
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
236 enum
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
237 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
238 macro_noexpand = 1 // set to not expland the macro by default in listing
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
239 };
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
240
0
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241 typedef struct structtab_s structtab_t;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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242 typedef struct structtab_field_s structtab_field_t;
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243
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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244 struct structtab_field_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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245 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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246 char *name; // structure field name - NULL for anonymous
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247 int size; // structure field size
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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248 structtab_t *substruct; // sub structure if there is one
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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249 structtab_field_t *next; // next field entry
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250 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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251
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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252 struct structtab_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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253 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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254 char *name; // name of structure
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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255 int size; // number of bytes taken by struct
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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256 structtab_field_t *fields; // fields in the structure
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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257 structtab_t *next; // next structure
223
211fc8038b8d More unicorn stuff - structs and macros
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parents: 222
diff changeset
258 line_t *definedat; // line where structure is defined
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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259 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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260
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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261 struct asmstate_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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262 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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263 int output_format; // output format
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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264 int target; // assembly target
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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265 int debug_level; // level of debugging requested
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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266 FILE *debug_file; // FILE * to output debug messages to
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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267 int flags; // assembly flags
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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268 int pragmas; // pragmas currently in effect
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269 int errorcount; // number of errors encountered
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270 int warningcount; // number of warnings issued
0
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271 int inmacro; // are we in a macro?
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272 int instruct; // are w in a structure?
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273 int skipcond; // skipping a condition?
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274 int skipcount; // depth of "skipping"
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275 int skipmacro; // are we skipping in a macro?
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276 int endseen; // have we seen an "end" pseudo?
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277 int execaddr; // address from "end"
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278 int inmod; // inside an os9 module?
210
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279 int undefzero; // used for handling "condundefzero"
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280 int pretendmax; // set if we need to pretend the instruction is max length
0
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281 unsigned char crc[3]; // crc accumulator
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282 int badsymerr; // throw error on undef sym if set
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283
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284 line_t *line_head; // start of lines list
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285 line_t *line_tail; // tail of lines list
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286
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287 line_t *cl; // current line pointer
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288
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289 sectiontab_t *csect; // current section
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290
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291 int context; // the current "context"
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292 int nextcontext; // the next available context
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293
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294 symtab_t symtab; // meta data for the symbol table
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295 macrotab_t *macros; // macro table
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296 sectiontab_t *sections; // section table
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297 exportlist_t *exportlist; // list of exported symbols
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298 importlist_t *importlist; // list of imported symbols
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299 char *list_file; // name of file to list to
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300 char *output_file; // output file name
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301 lw_stringlist_t input_files; // files to assemble
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302 void *input_data; // opaque data used by the input system
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303 lw_stringlist_t include_list; // include paths
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304 lw_stack_t file_dir; // stack of the "current file" dir
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305 lw_stack_t includelist;
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306
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307 structtab_t *structs; // defined structures
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308 structtab_t *cstruct; // current structure
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309 lw_expr_t savedaddr; // old address counter before struct started
0
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310 int exportcheck; // set if we need to collapse out the section base to 0
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311 int passno; // set to the current pass number
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312 int preprocess; // set if we are prepocessing
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313 int fileerr; // flags error opening file
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314 };
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315
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316 #ifndef ___symbol_c_seen___
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317
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318 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags);
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319 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym);
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320
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321 #endif
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322
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323 #ifndef ___lwasm_c_seen___
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324
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325 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...);
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326 extern void lwasm_register_warning(asmstate_t *as, line_t *cl, const char *msg, ...);
226
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327
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328 extern void lwasm_register_error_n(asmstate_t *as, line_t *cl, char *iptr, const char *msg, ...);
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329 extern void lwasm_register_warning_n(asmstate_t *as, line_t *cl, char *iptr, const char *msg, ...);
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330
0
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331 extern int lwasm_next_context(asmstate_t *as);
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332 extern void lwasm_emit(line_t *cl, int byte);
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333 extern void lwasm_emitop(line_t *cl, int opc);
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334
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335 extern void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr);
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336 extern lw_expr_t lwasm_fetch_expr(line_t *cl, int id);
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337 extern lw_expr_t lwasm_parse_expr(asmstate_t *as, char **p);
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338 extern int lwasm_emitexpr(line_t *cl, lw_expr_t expr, int s);
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339
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340 extern void skip_operand(char **p);
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341
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342 extern int lwasm_lookupreg2(const char *rlist, char **p);
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343 extern int lwasm_lookupreg3(const char *rlist, char **p);
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344
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345 extern void lwasm_show_errors(asmstate_t *as);
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346
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347 extern int lwasm_reduce_expr(asmstate_t *as, lw_expr_t expr);
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348
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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349 extern lw_expr_t lwasm_parse_cond(asmstate_t *as, char **p);
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350
241
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351 extern int lwasm_calculate_range(asmstate_t *as, lw_expr_t expr, int *min, int *max);
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352
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353 #endif
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354
0
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355 extern void debug_message(asmstate_t *as, int level, const char *fmt, ...);
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356 extern void dump_state(asmstate_t *as);
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357
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358
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359 #define OPLEN(op) (((op)>0xFF)?2:1)
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360 #define CURPRAGMA(l,p) (((l) && ((l)->pragmas & (p))) ? 1 : 0)
0
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361
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362 #endif /* ___lwasm_h_seen___ */