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325
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1 /*
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2 pragma.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 #include <config.h>
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23
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24 #include <lw_string.h>
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25
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26 #include "lwasm.h"
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27
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28 struct pragma_list
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29 {
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30 const char *str;
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31 int flag;
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32 };
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33
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34 static const struct pragma_list set_pragmas[] =
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35 {
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36 { "dollarnotlocal", PRAGMA_DOLLARNOTLOCAL },
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37 { "noindex0tonone", PRAGMA_NOINDEX0TONONE },
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38 { "undefextern", PRAGMA_UNDEFEXTERN },
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39 { "cescapes", PRAGMA_CESCAPES },
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40 { "importundefexport", PRAGMA_IMPORTUNDEFEXPORT },
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41 { 0, 0 }
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42 };
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43
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44 static const struct pragma_list reset_pragmas[] =
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45 {
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46 { "nodollarnotlocal", PRAGMA_DOLLARNOTLOCAL },
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47 { "index0tonone", PRAGMA_NOINDEX0TONONE },
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48 { "noundefextern", PRAGMA_UNDEFEXTERN },
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49 { "nocescapes", PRAGMA_CESCAPES },
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50 { "noimportundefexport", PRAGMA_IMPORTUNDEFEXPORT },
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51 { 0, 0 }
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52 };
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53
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54 int parse_pragma_string(asmstate_t *as, char *str)
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55 {
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56 char *p;
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57 int i;
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58 const char *np = str;
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59 int pragmas = as -> pragmas;
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60
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61 while (np)
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62 {
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63 p = lw_token(np, ',', &np);
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64 for (i = 0; set_pragmas[i].str; i++)
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65 {
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66 if (!strcasecmp(p, set_pragmas[i].str))
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67 {
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68 pragmas |= set_pragmas[i].flag;
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69 goto out;
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70 }
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71 }
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72 for (i = 0; reset_pragmas[i].str; i++)
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73 {
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74 if (!strcasecmp(p, reset_pragmas[i].str))
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75 {
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76 pragmas &= ~(reset_pragmas[i].flag);
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77 goto out;
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78 }
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79 }
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80 /* unrecognized pragma here */
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81 lw_free(p);
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82 return 0;
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83
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84 out:
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85 lw_free(p);
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86 }
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87 as -> pragmas = pragmas;
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88 return 1;
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89 }
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