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Basic macro processor ported forward; added context break handling for local symbols
author lost@starbug
date Thu, 25 Mar 2010 23:17:54 -0600
parents 0215a0fbf61b
children a82c55070624
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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
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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
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29 #include <lw_expr.h>
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30 #include <lw_alloc.h>
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31 #include <lw_string.h>
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32
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33 #include "lwasm.h"
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34
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35 lw_expr_t lwasm_evaluate_var(char *var)
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36 {
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37 return NULL;
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38 }
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39
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40 lw_expr_t lwasm_evaluate_special(int t, void *ptr)
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41 {
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42 switch (t)
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43 {
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44 case lwasm_expr_linelen:
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45 {
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46 line_t *cl = ptr;
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47 if (cl -> len == -1)
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48 return NULL;
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49 return lw_expr_build(lw_expr_type_int, cl -> len);
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50 }
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51 break;
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52 }
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53 return NULL;
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54 }
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55
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56 void lwasm_register_error(asmstate_t *as, line_t *l, const char *msg, ...)
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57 {
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58 lwasm_error_t *e;
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59 va_list args;
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60 char errbuff[1024];
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61 int r;
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62
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63 if (!l)
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64 return;
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65
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66 va_start(args, msg);
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67
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68 e = lw_alloc(sizeof(lwasm_error_t));
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69
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70 e -> next = l -> err;
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71 l -> err = e;
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72
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73 as -> errorcount++;
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74
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75 r = vsnprintf(errbuff, 1024, msg, args);
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76 e -> mess = lw_strdup(errbuff);
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77
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78 va_end(args);
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79 }
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80
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81 int lwasm_next_context(asmstate_t *as)
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82 {
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83 int r;
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84 r = as -> nextcontext;
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85 as -> nextcontext++;
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86 return r;
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87 }