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annotate lwasm/pragma.c @ 81:428068681cbf

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Added nolist pragma to suppress listing output of non-code generating lines
author Lost Wizard (lost@starbug3)
date Wed, 25 May 2011 19:13:33 -0600
parents 337301ddf74a
children 8fa52c3f2970
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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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
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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22 #include <string.h>
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23 #include <ctype.h>
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24
0
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25 #include <lw_string.h>
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26 #include <lw_alloc.h>
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27
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28 #include "lwasm.h"
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29 #include "instab.h"
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30
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31 struct pragma_list
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32 {
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33 const char *str;
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34 int flag;
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35 };
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36
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37 static const struct pragma_list set_pragmas[] =
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38 {
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39 { "dollarnotlocal", PRAGMA_DOLLARNOTLOCAL },
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40 { "noindex0tonone", PRAGMA_NOINDEX0TONONE },
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41 { "undefextern", PRAGMA_UNDEFEXTERN },
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42 { "cescapes", PRAGMA_CESCAPES },
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43 { "importundefexport", PRAGMA_IMPORTUNDEFEXPORT },
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44 { "pcaspcr", PRAGMA_PCASPCR },
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cb4efc47ce9d Allow macros to shadow/override builtin operations when the "shadow" pragma is active, which is NOT the default
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45 { "shadow", PRAGMA_SHADOW },
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428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
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46 { "nolist", PRAGMA_NOLIST },
0
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47 { 0, 0 }
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48 };
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49
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50 static const struct pragma_list reset_pragmas[] =
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51 {
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52 { "nodollarnotlocal", PRAGMA_DOLLARNOTLOCAL },
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53 { "index0tonone", PRAGMA_NOINDEX0TONONE },
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54 { "noundefextern", PRAGMA_UNDEFEXTERN },
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55 { "nocescapes", PRAGMA_CESCAPES },
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56 { "noimportundefexport", PRAGMA_IMPORTUNDEFEXPORT },
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57 { "nopcaspcr", PRAGMA_PCASPCR },
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58 { "noshadow", PRAGMA_SHADOW },
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59 { "list", PRAGMA_NOLIST },
0
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60 { 0, 0 }
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61 };
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62
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63 int parse_pragma_string(asmstate_t *as, char *str, int ignoreerr)
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64 {
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65 char *p;
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66 int i;
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67 const char *np = str;
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68 int pragmas = as -> pragmas;
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69
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70 while (np)
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71 {
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72 p = lw_token(np, ',', &np);
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73 for (i = 0; set_pragmas[i].str; i++)
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74 {
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75 if (!strcasecmp(p, set_pragmas[i].str))
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76 {
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77 pragmas |= set_pragmas[i].flag;
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78 goto out;
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79 }
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80 }
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81 for (i = 0; reset_pragmas[i].str; i++)
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82 {
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83 if (!strcasecmp(p, reset_pragmas[i].str))
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84 {
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85 pragmas &= ~(reset_pragmas[i].flag);
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86 goto out;
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87 }
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88 }
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89 /* unrecognized pragma here */
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90 if (!ignoreerr)
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91 {
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92 lw_free(p);
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93 return 0;
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94 }
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95 out:
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96 lw_free(p);
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97 }
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98 as -> pragmas = pragmas;
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99 return 1;
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100 }
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101
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102 PARSEFUNC(pseudo_parse_pragma)
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103 {
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104 char *ps, *t;
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105
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106 for (t = *p; *t && !isspace(*t); t++)
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107 /* do nothing */ ;
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108
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109 ps = lw_strndup(*p, t - *p);
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110 *p = t;
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111
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112 l -> len = 0;
0
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113
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114 if (parse_pragma_string(as, ps, 0) == 0)
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115 {
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116 lwasm_register_error(as, l, "Unrecognized pragma string");
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117 }
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118 if (as -> pragmas & PRAGMA_NOLIST)
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119 l -> pragmas |= PRAGMA_NOLIST;
0
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120 lw_free(ps);
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121 }
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122
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123 PARSEFUNC(pseudo_parse_starpragma)
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124 {
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125 char *ps, *t;
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126
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127 for (t = *p; *t && !isspace(*t); t++)
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128 /* do nothing */ ;
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129
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130 ps = lw_strndup(*p, t - *p);
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131 *p = t;
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132
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133 l -> len = 0;
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134
0
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135 // *pragma must NEVER throw an error
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136 parse_pragma_string(as, ps, 1);
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137 if (as -> pragmas & PRAGMA_NOLIST)
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
Lost Wizard (lost@starbug3)
parents: 56
diff changeset
138 l -> pragmas |= PRAGMA_NOLIST;
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
139 lw_free(ps);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
140 }