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annotate lwasm/lwasm.c @ 375:3498b2d88376

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Added export list to object output
author lost@starbug
date Mon, 26 Apr 2010 17:14:04 -0600
parents d99322ef6f21
children 91c0fe026940
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1 /*
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2 lwasm.c
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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
344
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22 #define ___lwasm_c_seen___
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23
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24 #include <config.h>
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25
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26 #include <stdio.h>
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27 #include <stdarg.h>
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28 #include <string.h>
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29
337
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30 #include <lw_expr.h>
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31 #include <lw_alloc.h>
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32 #include <lw_string.h>
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33
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34 #include "lwasm.h"
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35
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36 void lwasm_register_error(asmstate_t *as, line_t *l, const char *msg, ...);
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37
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38 int lwasm_expr_exportable(asmstate_t *as, lw_expr_t expr)
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39 {
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40 return 0;
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41 }
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42
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43 int lwasm_expr_exportval(asmstate_t *as, lw_expr_t expr)
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44 {
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45 return 0;
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46 }
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47
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48 lw_expr_t lwasm_evaluate_var(char *var, void *priv)
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49 {
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50 asmstate_t *as = (asmstate_t *)priv;
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51 lw_expr_t e;
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52 importlist_t *im;
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53 struct symtabe *s;
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54
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55 s = lookup_symbol(as, as -> cl, var);
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56 if (s)
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57 {
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58 e = lw_expr_build(lw_expr_type_special, lwasm_expr_syment, s);
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59 return e;
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60 }
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61
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62 // undefined here is undefied unless output is object
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63 if (as -> output_format != OUTPUT_OBJ)
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64 goto nomatch;
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65
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66 // check for import
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67 for (im = as -> importlist; im; im = im -> next)
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68 {
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69 if (!strcmp(im -> symbol, var))
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70 break;
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71 }
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72
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73 // check for "undefined" to import automatically
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74 if (!im && CURPRAGMA(as -> cl, PRAGMA_UNDEFEXTERN))
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75 {
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76 im = lw_alloc(sizeof(importlist_t));
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77 im -> symbol = lw_strdup(var);
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78 im -> next = as -> importlist;
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79 as -> importlist = im;
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80 }
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81
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82 if (!im)
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83 goto nomatch;
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84
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85 e = lw_expr_build(lw_expr_type_special, lwasm_expr_import, im);
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86 return e;
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87
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88 nomatch:
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89 if (as -> badsymerr)
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90 {
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91 lwasm_register_error(as, as -> cl, "Undefined symbol %s", var);
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92 }
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93 return NULL;
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94 }
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95
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96 lw_expr_t lwasm_evaluate_special(int t, void *ptr, void *priv)
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97 {
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98 switch (t)
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99 {
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100 case lwasm_expr_secbase:
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101 {
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102 line_t *cl = ptr;
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103 if (cl -> as -> exportcheck && ptr == cl -> as -> csect)
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104 return lw_expr_build(lw_expr_type_int, 0);
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105 return NULL;
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106 }
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107
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108 case lwasm_expr_linelen:
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109 {
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110 line_t *cl = ptr;
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111 if (cl -> len == -1)
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112 return NULL;
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113 return lw_expr_build(lw_expr_type_int, cl -> len);
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114 }
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115 break;
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116
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117 case lwasm_expr_lineaddr:
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118 {
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119 line_t *cl = ptr;
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120 if (cl -> addr)
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121 return lw_expr_copy(cl -> addr);
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122 else
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123 return NULL;
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124 }
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125
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126 case lwasm_expr_syment:
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127 {
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9c24d9d485b9 Much bugfixing
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128 struct symtabe *sym = ptr;
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129 return lw_expr_copy(sym -> value);
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130 }
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131
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132 case lwasm_expr_import:
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133 {
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134 return NULL;
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135 }
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136
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137 case lwasm_expr_nextbp:
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138 {
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139 return NULL;
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140 }
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141
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142 case lwasm_expr_prevbp:
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143 {
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144 return NULL;
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145 }
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146 }
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147 return NULL;
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148 }
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149
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150 void lwasm_register_error(asmstate_t *as, line_t *l, const char *msg, ...)
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151 {
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152 lwasm_error_t *e;
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153 va_list args;
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154 char errbuff[1024];
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155 int r;
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156
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157 if (!l)
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158 return;
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159
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160 va_start(args, msg);
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161
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162 e = lw_alloc(sizeof(lwasm_error_t));
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163
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164 e -> next = l -> err;
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165 l -> err = e;
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166
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167 as -> errorcount++;
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168
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169 r = vsnprintf(errbuff, 1024, msg, args);
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170 e -> mess = lw_strdup(errbuff);
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171
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172 va_end(args);
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173 }
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174
351
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175 void lwasm_register_warning(asmstate_t *as, line_t *l, const char *msg, ...)
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176 {
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177 lwasm_error_t *e;
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178 va_list args;
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179 char errbuff[1024];
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180 int r;
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181
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182 if (!l)
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183 return;
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184
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185 va_start(args, msg);
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186
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187 e = lw_alloc(sizeof(lwasm_error_t));
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188
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189 e -> next = l -> err;
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190 l -> err = e;
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191
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diff changeset
192 as -> errorcount++;
4dba8c7e242c conditional pseudo ops added
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parents: 348
diff changeset
193
4dba8c7e242c conditional pseudo ops added
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parents: 348
diff changeset
194 r = vsnprintf(errbuff, 1024, msg, args);
4dba8c7e242c conditional pseudo ops added
lost@starbug
parents: 348
diff changeset
195 e -> mess = lw_strdup(errbuff);
4dba8c7e242c conditional pseudo ops added
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parents: 348
diff changeset
196
4dba8c7e242c conditional pseudo ops added
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parents: 348
diff changeset
197 va_end(args);
4dba8c7e242c conditional pseudo ops added
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parents: 348
diff changeset
198 }
4dba8c7e242c conditional pseudo ops added
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parents: 348
diff changeset
199
345
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
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parents: 344
diff changeset
200 int lwasm_next_context(asmstate_t *as)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
lost@starbug
parents: 344
diff changeset
201 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
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parents: 344
diff changeset
202 int r;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
lost@starbug
parents: 344
diff changeset
203 r = as -> nextcontext;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
lost@starbug
parents: 344
diff changeset
204 as -> nextcontext++;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
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parents: 344
diff changeset
205 return r;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols
lost@starbug
parents: 344
diff changeset
206 }
346
a82c55070624 Added expression parsing infrastructure and misc fixes
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parents: 345
diff changeset
207
a82c55070624 Added expression parsing infrastructure and misc fixes
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parents: 345
diff changeset
208 void lwasm_emit(line_t *cl, int byte)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
209 {
374
d99322ef6f21 Stage 1: actually do output
lost@starbug
parents: 371
diff changeset
210 if (cl -> outputl < 0)
d99322ef6f21 Stage 1: actually do output
lost@starbug
parents: 371
diff changeset
211 cl -> outputl = 0;
d99322ef6f21 Stage 1: actually do output
lost@starbug
parents: 371
diff changeset
212
346
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
213 if (cl -> outputl == cl -> outputbl)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
214 {
a82c55070624 Added expression parsing infrastructure and misc fixes
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parents: 345
diff changeset
215 cl -> output = lw_realloc(cl -> output, cl -> outputbl + 8);
a82c55070624 Added expression parsing infrastructure and misc fixes
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parents: 345
diff changeset
216 cl -> outputbl += 8;
a82c55070624 Added expression parsing infrastructure and misc fixes
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parents: 345
diff changeset
217 }
a82c55070624 Added expression parsing infrastructure and misc fixes
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parents: 345
diff changeset
218 cl -> output[cl -> outputl++] = byte & 0xff;
354
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
219
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
220 if (cl -> inmod)
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
221 {
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
222 asmstate_t *as = cl -> as;
60568b123281 Added os9 opcodes and ERROR
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parents: 351
diff changeset
223 // update module CRC
60568b123281 Added os9 opcodes and ERROR
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parents: 351
diff changeset
224 // this is a direct transliteration from the nitros9 asm source
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
225 // to C; it can, no doubt, be optimized for 32 bit processing
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
226 byte &= 0xff;
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
227
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
228 byte ^= (as -> crc)[0];
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
229 (as -> crc)[0] = (as -> crc)[1];
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
230 (as -> crc)[1] = (as -> crc)[2];
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
231 (as -> crc)[1] ^= (byte >> 7);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
232 (as -> crc)[2] = (byte << 1);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
233 (as -> crc)[1] ^= (byte >> 2);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
234 (as -> crc)[2] ^= (byte << 6);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
235 byte ^= (byte << 1);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
236 byte ^= (byte << 2);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
237 byte ^= (byte << 4);
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
238 if (byte & 0x80)
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
239 {
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
240 (as -> crc)[0] ^= 0x80;
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
241 (as -> crc)[2] ^= 0x21;
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
242 }
60568b123281 Added os9 opcodes and ERROR
lost@starbug
parents: 351
diff changeset
243 }
346
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
244 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
245
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
246 void lwasm_emitop(line_t *cl, int opc)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
247 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
248 if (opc > 0x100)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
249 lwasm_emit(cl, opc >> 8);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
250 lwasm_emit(cl, opc);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
251 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
252
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
253 lw_expr_t lwasm_parse_term(char **p, void *priv)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
254 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
255 asmstate_t *as = priv;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
256 int val;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
257
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
258 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
259 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
260
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
261 if (**p == '*' || (
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
262 **p == '.'
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
263 && !((*p)[1] >= 'A' && (*p)[1] <= 'Z')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
264 && !((*p)[1] >= 'a' && (*p)[1] <= 'z')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
265 && !((*p)[1] >= '0' && (*p)[1] <= '9')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
266 ))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
267 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
268 // special "symbol" for current line addr (*, .)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
269 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
270 return lw_expr_build(lw_expr_type_special, lwasm_expr_lineaddr, as -> cl);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
271 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
272
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
273 // branch points
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
274 if (**p == '<')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
275 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
276 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
277 return lw_expr_build(lw_expr_type_special, lwasm_expr_prevbp, as -> cl);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
278 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
279 if (**p == '>')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
280 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
281 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
282 return lw_expr_build(lw_expr_type_special, lwasm_expr_nextbp, as -> cl);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
283 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
284
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
285 // double ascii constant
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
286 if (**p == '"')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
287 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
288 int v;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
289 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
290 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
291 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
292 if (!*((*p)+1))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
293 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
294 v = (unsigned char)**p << 8 | (unsigned char)*((*p)+1);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
295 (*p) += 2;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
296 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
297 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
298
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
299 if (**p == '\'')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
300 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
301 int v;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
302
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
303 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
304 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
305 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
306
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
307 v = (unsigned char)**p;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
308 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
309 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
310 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
311
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
312 if (**p == '&')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
313 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
314 // decimal constant
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
315 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
316 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
317
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
318 if (!strchr("0123456789", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
319 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
320
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
321 while (**p && strchr("0123456789", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
322 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
323 val = val * 10 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
324 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
325 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
326 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
327 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
328
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
329 if (**p == '%')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
330 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
331 // binary constant
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
332 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
333 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
334
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
335 if (**p != '0' && **p != '1')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
336 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
337
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
338 while (**p && (**p == '0' || **p == '1'))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
339 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
340 val = val * 2 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
341 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
342 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
343 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
344 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
345
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
346 if (**p == '$')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
347 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
348 // hexadecimal constant
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
349 int v = 0, v2;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
350 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
351
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
352 if (!strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
353 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
354
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
355 while (**p && strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
356 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
357 v2 = toupper(**p) - '0';
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
358 if (v2 > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
359 v2 -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
360 val = val * 16 + v2;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
361 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
362 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
363 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
364 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
365
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
366 if (**p == '0' && (*((*p)+1) == 'x' || *((*p)+1) == 'X'))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
367 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
368 // hexadecimal constant, C style
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
369 int v = 0, v2;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
370 (*p)+=2;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
371
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
372 if (!strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
373 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
374
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
375 while (**p && strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
376 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
377 v2 = toupper(**p) - '0';
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
378 if (v2 > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
379 v2 -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
380 val = val * 16 + v2;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
381 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
382 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
383 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
384 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
385
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
386 if (**p == '@' && (*((*p)+1) >= '0' && *((*p)+1) <= '7'))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
387 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
388 // octal constant
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
389 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
390 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
391
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
392 if (!strchr("01234567", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
393 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
394
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
395 while (**p && strchr("01234567", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
396 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
397 val = val * 8 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
398 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
399 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
400 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
401 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
402
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
403
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
404 // symbol or bare decimal or suffix constant here
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
405 do
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
406 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
407 int havedol = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
408 int l = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
409
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
410 while ((*p)[l] && strchr(SYMCHARS, (*p)[l]))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
411 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
412 if ((*p)[l] == '$')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
413 havedol = 1;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
414 l++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
415 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
416 if (l == 0)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
417 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
418
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
419 if (havedol || **p < '0' || **p > '9')
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
420 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
421 // have a symbol here
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
422 char *sym;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
423 lw_expr_t term;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
424
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
425 sym = lw_strndup(*p, l);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
426 (*p) += l;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
427 term = lw_expr_build(lw_expr_type_var, sym);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
428 lw_free(sym);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
429 return term;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
430 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
431 } while (0);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
432
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
433 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
434 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
435
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
436 // we have a numeric constant here, either decimal or postfix base notation
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
437 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
438 int decval = 0, binval = 0, hexval = 0, octval = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
439 int valtype = 15; // 1 = bin, 2 = oct, 4 = dec, 8 = hex
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
440 int bindone = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
441 int val;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
442 int dval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
443
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
444 while (1)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
445 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
446 if (!**p || !strchr("0123456789ABCDEFabcdefqhoQHO", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
447 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
448 // we can legally be bin or decimal here
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
449 if (bindone)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
450 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
451 // just finished a binary value
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
452 val = binval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
453 break;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
454 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
455 else if (valtype & 4)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
456 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
457 val = decval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
458 break;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
459 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
460 else
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
461 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
462 // bad value
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
463 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
464 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
465 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
466
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
467 dval = toupper(**p);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
468 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
469
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
470 if (bindone)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
471 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
472 // any characters past "B" means it is not binary
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
473 bindone = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
474 valtype &= 14;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
475 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
476
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
477 switch (dval)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
478 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
479 case 'Q':
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
480 case 'O':
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
481 if (valtype & 2)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
482 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
483 val = octval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
484 valtype = -1;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
485 break;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
486 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
487 else
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
488 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
489 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
490 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
491 /* can't get here */
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
492
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
493 case 'H':
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
494 if (valtype & 8)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
495 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
496 val = hexval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
497 valtype = -1;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
498 break;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
499 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
500 else
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
501 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
502 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
503 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
504 /* can't get here */
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
505
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
506 case 'B':
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
507 // this is a bit of a sticky one since B may be a
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
508 // hex number instead of the end of a binary number
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
509 // so it falls through to the digit case
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
510 if (valtype & 1)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
511 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
512 // could still be binary of hex
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
513 bindone = 1;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
514 valtype = 9;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
515 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
516 /* fall through intented */
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
517
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
518 default:
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
519 // digit
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
520 dval -= '0';
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
521 if (dval > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
522 dval -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
523 if (valtype & 8)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
524 hexval = hexval * 16 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
525 if (valtype & 4)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
526 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
527 if (dval > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
528 valtype &= 11;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
529 else
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
530 decval = decval * 10 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
531 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
532 if (valtype & 2)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
533 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
534 if (dval > 7)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
535 valtype &= 13;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
536 else
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
537 octval = octval * 8 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
538 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
539 if (valtype & 1)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
540 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
541 if (dval > 1)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
542 valtype &= 14;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
543 else
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
544 binval = binval * 2 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
545 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
546 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
547 if (valtype == -1)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
548 break;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
549
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
550 // return if no more valid types
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
551 if (valtype == 0)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
552 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
553
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
554 val = decval; // in case we fall through
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
555 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
556
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
557 // get here if we have a value
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
558 return lw_expr_build(lw_expr_type_int, val);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
559 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
560 // can't get here
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
561 }
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
562
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
563 lw_expr_t lwasm_parse_expr(asmstate_t *as, char **p)
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
564 {
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
565 lw_expr_t e;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
566
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
567 e = lw_expr_parse(p, as);
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
568
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
569 return e;
a82c55070624 Added expression parsing infrastructure and misc fixes
lost@starbug
parents: 345
diff changeset
570 }
347
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
571
363
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
572 int lwasm_reduce_expr(asmstate_t *as, lw_expr_t expr)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
573 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
574 lw_expr_simplify(expr, as);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
575 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
576
347
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
577 void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr)
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
578 {
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
579 struct line_expr_s *e;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
580
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
581 for (e = cl -> exprs; e; e = e -> next)
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
582 {
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
583 if (e -> id == id)
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
584 {
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
585 lw_expr_destroy(e -> expr);
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
586 e -> expr = expr;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
587 return;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
588 }
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
589 }
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
590
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
591 e = lw_alloc(sizeof(struct line_expr_s));
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
592 e -> expr = expr;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
593 e -> id = id;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
594 e -> next = cl -> exprs;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
595 cl -> exprs = e;
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
596 }
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
597
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
598 lw_expr_t lwasm_fetch_expr(line_t *cl, int id)
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
599 {
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
600 struct line_expr_s *e;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
601
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
602 for (e = cl -> exprs; e; e = e -> next)
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
603 {
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
604 if (e -> id == id)
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
605 {
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
606 return e -> expr;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
607 }
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
608 }
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
609 return NULL;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
610 }
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
611
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
612 void skip_operand(char **p)
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
613 {
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
614 for (; **p && !isspace(**p); (*p)++)
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
615 /* do nothing */ ;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
616 }
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
617
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
618 int lwasm_emitexpr(line_t *l, lw_expr_t expr, int size)
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
619 {
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
620 int v;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
621
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
622 if (lw_expr_istype(expr, lw_expr_type_int))
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
623 {
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
624 v = lw_expr_intval(expr);
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
625 }
348
11a95c6414b4 Added third func to instab to split resolve and emit logic
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parents: 347
diff changeset
626 // handle external/cross-section/incomplete references here
347
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
627 else
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
628 {
374
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
629 if (l -> as -> output_format == OUTPUT_OBJ)
d99322ef6f21 Stage 1: actually do output
lost@starbug
parents: 371
diff changeset
630 {
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
631 reloctab_t *re;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
632
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
633 // add "expression" record to section table
d99322ef6f21 Stage 1: actually do output
lost@starbug
parents: 371
diff changeset
634 v = lw_expr_intval(l -> addr) + l -> outputl;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
635 re = lw_alloc(sizeof(reloctab_t));
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
636 re -> next = l -> csect -> reloctab;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
637 l -> csect -> reloctab = re;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
638 re -> offset = v;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
639 re -> size = size;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
640 re -> expr = lw_expr_copy(expr);
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
641
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
642 for (v = 0; v < size; v++)
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
643 lwasm_emit(l, 0);
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
644 return 0;
d99322ef6f21 Stage 1: actually do output
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parents: 371
diff changeset
645 }
347
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
646 lwasm_register_error(l -> as, l, "Expression not fully resolved");
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
647 return -1;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
648 }
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
649
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
650 switch (size)
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
651 {
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
652 case 4:
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
653 lwasm_emit(l, v >> 24);
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
654 lwasm_emit(l, v >> 16);
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
655 /* fallthrough intended */
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
656
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
657 case 2:
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
658 lwasm_emit(l, v >> 8);
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
659 /* fallthrough intended */
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
660
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
661 case 1:
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
662 lwasm_emit(l, v);
1649bc7bda5a Some data oriented pseudo ops added
lost@starbug
parents: 346
diff changeset
663 }
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
664
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
665 return 0;
1649bc7bda5a Some data oriented pseudo ops added
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parents: 346
diff changeset
666 }
357
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
667
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
668 int lwasm_lookupreg2(const char *regs, char **p)
0cf4948d53b4 Checkpoint - adding actual cpu instructions
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parents: 354
diff changeset
669 {
0cf4948d53b4 Checkpoint - adding actual cpu instructions
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parents: 354
diff changeset
670 int rval = 0;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
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parents: 354
diff changeset
671
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
672 while (*regs)
0cf4948d53b4 Checkpoint - adding actual cpu instructions
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parents: 354
diff changeset
673 {
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
674 if (toupper(**p) == *regs)
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
675 {
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
676 if (regs[1] == ' ' && !isalpha(*(*p + 1)))
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
677 break;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
678 if (toupper(*(*p + 1)) == regs[1])
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
679 break;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
680 }
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
681 regs += 2;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
682 rval++;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
683 }
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
684 if (!*regs)
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
685 return -1;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
686 if (regs[1] == ' ')
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
687 (*p)++;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
688 else
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
689 (*p) += 2;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
690 return rval;
0cf4948d53b4 Checkpoint - adding actual cpu instructions
lost@starbug
parents: 354
diff changeset
691 }
359
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
692
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
693 int lwasm_lookupreg3(const char *regs, char **p)
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
694 {
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
695 int rval = 0;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
696
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
697 while (*regs)
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
698 {
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
699 if (toupper(**p) == *regs)
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
700 {
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
701 if (regs[1] == ' ' && !isalpha(*(*p + 1)))
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
702 break;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
703 if (toupper(*(*p + 1)) == regs[1])
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
704 {
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
705 if (regs[2] == ' ' && !isalpha(*(*p + 2)))
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
706 break;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
707 if (toupper(*(*p + 2)) == regs[2])
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
708 break;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
709 }
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
710 }
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
711 regs += 3;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
712 rval++;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
713 }
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
714 if (!*regs)
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
715 return -1;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
716 if (regs[1] == ' ')
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
717 (*p)++;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
718 else if (regs[2] == ' ')
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
719 (*p) += 2;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
720 else
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
721 (*p) += 3;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
722 return rval;
f50a54d0293a Indexed part 1
lost@starbug
parents: 357
diff changeset
723 }
363
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
724
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
725 void lwasm_show_errors(asmstate_t *as)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
726 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
727 fprintf(stderr, "Errors encountered. FIXME - print out errors.\n");
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents: 359
diff changeset
728 }