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annotate lwasm/lwasm.h @ 347:1649bc7bda5a

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Some data oriented pseudo ops added
author lost@starbug
date Sat, 27 Mar 2010 20:16:24 -0600
parents a82c55070624
children dcd2978a7d18
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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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28
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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 };
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44
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45 enum lwasm_output_e
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46 {
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47 OUTPUT_DECB = 0, // DECB multirecord format
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48 OUTPUT_RAW, // raw sequence of bytes
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49 OUTPUT_OBJ, // proprietary object file format
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50 OUTPUT_RAWREL, // raw bytes where ORG causes a SEEK in the file
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51 OUTPUT_OS9 // os9 module target
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52 };
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53
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54 enum lwasm_target_e
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55 {
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56 TARGET_6309 = 0, // target 6309 CPU
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57 TARGET_6809 // target 6809 CPU (no 6309 ops)
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58 };
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59
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60 enum lwasm_flags_e
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61 {
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62 FLAG_NONE = 0,
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63 FLAG_LIST = 0x0001,
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64 FLAG_DEPEND = 0x0002
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65 };
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66
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67 enum lwasm_pragmas_e
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68 {
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69 PRAGMA_NONE = 0, // no pragmas in effect
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70 PRAGMA_DOLLARNOTLOCAL = 0x0001, // dollar sign does not make a symbol local
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71 PRAGMA_NOINDEX0TONONE = 0x0002, // do not change implicit 0,R to ,R
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72 PRAGMA_UNDEFEXTERN = 0x0004, // undefined symbols are considered to be external
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73 PRAGMA_CESCAPES = 0x0008, // allow C style escapes in fcc, fcs, fcn, etc.
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74 PRAGMA_IMPORTUNDEFEXPORT = 0x0010 // imports symbol if undefined upon export
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75 };
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76
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77 typedef struct lwasm_error_s lwasm_error_t;
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78 struct lwasm_error_s
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79 {
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80 char *mess; // actual error message
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81 lwasm_error_t *next; // ptr to next error
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82 };
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83
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84 struct line_expr_s
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85 {
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86 lw_expr_t expr;
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87 int id;
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88 struct line_expr_s *next;
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89 };
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90
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91 typedef struct line_s line_t;
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92 struct line_s
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93 {
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94 lw_expr_t addr; // assembly address of the line
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95 int len; // the "size" this line occupies (address space wise) (-1 if unknown)
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96 int insn; // number of insn in insn table
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97 int symset; // set if the line symbol was consumed by the instruction
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98 char *sym; // symbol, if any, on the line
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99 unsigned char *output; // output bytes
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100 int outputl; // size of output
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101 int outputbl; // size of output buffer
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102 lwasm_error_t *err; // list of errors
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103 line_t *prev; // previous line
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104 line_t *next; // next line
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105
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106 struct line_expr_s *exprs; // expressions used during parsing
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107 asmstate_t *as; // assembler state data ptr
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108 };
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109
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110 enum
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111 {
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112 symbol_flag_set = 1, // symbol was used with "set"
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113 symbol_flag_none = 0 // no flags
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114 };
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115
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116 struct symtabe
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117 {
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118 char *symbol; // the name of the symbol
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119 int context; // symbol context (-1 for global)
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120 int version; // version of the symbol (for "set")
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121 int flags; // flags for the symbol
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122 lw_expr_t value; // symbol value
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123 struct symtabe *next; // next symbol in the table
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124 };
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125
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126 typedef struct
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127 {
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128 struct symtabe *head; // start of symbol table
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129 } symtab_t;
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130
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131 typedef struct macrotab_s macrotab_t;
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132 struct macrotab_s
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133 {
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134 char *name; // name of macro
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135 char **lines; // macro lines
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136 int numlines; // number lines in macro
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137 macrotab_t *next; // next macro in list
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138 };
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139
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140 struct asmstate_s
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141 {
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142 int output_format; // output format
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143 int target; // assembly target
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144 int debug_level; // level of debugging requested
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145 int flags; // assembly flags
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146 int pragmas; // pragmas currently in effect
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147 int errorcount; // number of errors encountered
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148 int inmacro; // are we in a macro?
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149 int skipcond; // skipping a condition?
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150 int skipmacro; // are we skipping in a macro?
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151 int endseen; // have we seen an "end" pseudo?
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152 int execaddr; // address from "end"
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153
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154 line_t *line_head; // start of lines list
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155 line_t *line_tail; // tail of lines list
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156
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157 line_t *cl; // current line pointer
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158
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159 int context; // the current "context"
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160 int nextcontext; // the next available context
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161
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162 symtab_t symtab; // meta data for the symbol table
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163 macrotab_t *macros; // macro table
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164
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165 char *list_file; // name of file to list to
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166 char *output_file; // output file name
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167 lw_stringlist_t input_files; // files to assemble
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168 void *input_data; // opaque data used by the input system
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169 lw_stringlist_t include_list; // include paths
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170 lw_stack_t file_dir; // stack of the "current file" dir
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171 };
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172
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173 #ifndef ___symbol_c_seen___
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174
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175 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags);
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176 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym, int context, int version);
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177
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178 #endif
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179
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180 #ifndef ___lwasm_c_seen___
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181
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182 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...);
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183 extern int lwasm_next_context(asmstate_t *as);
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184 extern void lwasm_emit(line_t *cl, int byte);
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185 extern void lwasm_emitop(line_t *cl, int opc);
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186
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187 extern void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr);
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188 extern lw_expr_t lwasm_fetch_expr(line_t *cl, int id);
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189 extern lw_expr_t lwasm_parse_expr(asmstate_t *as, char **p);
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190 extern int lwasm_emitexpr(line_t *cl, lw_expr_t expr, int s);
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191
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192 extern void skip_operand(char **p);
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193
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194 #endif
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195
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196 #define OPLEN(op) (((op)>0xFF)?2:1)
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197
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198 #endif /* ___lwasm_h_seen___ */