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annotate lwasm/pragma.c @ 344:55c1f9a321e9

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Add S-record output support to lwlink Thanks to a patch from Joachim Ga?ler <achim@diegasslers.de>, lwlink now has output support for S-records. This is output only - it does not add input support for S-record files.
author William Astle <lost@l-w.ca>
date Thu, 09 Apr 2015 12:27:33 -0600
parents 98f3e016cfd8
children c6d2a1f54e0c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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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
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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 #include "input.h"
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31
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32 struct pragma_list
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33 {
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34 const char *setstr;
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35 const char *resetstr;
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36 int flag;
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37 };
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38
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39 struct pragma_stack_entry
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40 {
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41 int magic; // must always be at the start of any input stack entry
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42 int flag; // the pragma flag bit
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43 char str[1]; // magic number - this will be allocated bigger
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44 // string will be what's needed to re-instate a pragma
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45 };
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46
0
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47 static const struct pragma_list set_pragmas[] =
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48 {
108
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49 { "dollarnotlocal", "nodollarnotlocal", PRAGMA_DOLLARNOTLOCAL },
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b6b8c2645f5c Add back the dollarlocal and nodollarlocal pragma strings for compatibility with the documentation.
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50 { "nodollarlocal", "dollarlocal", PRAGMA_DOLLARNOTLOCAL },
108
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51 { "noindex0tonone", "index0tonone", PRAGMA_NOINDEX0TONONE },
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52 { "undefextern", "noundefextern", PRAGMA_UNDEFEXTERN },
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53 { "cescapes", "nocescapes", PRAGMA_CESCAPES },
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54 { "importundefexport", "noimportundefexport", PRAGMA_IMPORTUNDEFEXPORT },
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55 { "pcaspcr", "nopcaspcr", PRAGMA_PCASPCR },
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56 { "shadow", "noshadow", PRAGMA_SHADOW },
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57 { "nolist", "list", PRAGMA_NOLIST },
115
344cfc25afec Added initial infrastructure for pragma autobranchlength (suggested by Ebonhand on irc)
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58 { "autobranchlength", "noautobranchlength", PRAGMA_AUTOBRANCHLENGTH },
206
080bb67d84f2 Add export pragma
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59 { "export", "noexport", PRAGMA_EXPORT },
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07e1fac76321 Added pragma to allow non case sensitive symbols
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60 { "symbolnocase", "nosymbolnocase", PRAGMA_SYMBOLNOCASE },
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61 { "nosymbolcase", "symbolcase", PRAGMA_SYMBOLNOCASE },
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5d969517db74 Added condundefzero pragma
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62 { "condundefzero", "nocondundefzero", PRAGMA_CONDUNDEFZERO },
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507f442dc71e Add support for 6800 compatibility instructions.
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63 { "6800compat", "no6800compat", PRAGMA_6800COMPAT },
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98f3e016cfd8 Add pragma to turn off forward reference optimization
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64 { "forwardrefmax", "noforwardrefmax", PRAGMA_FORWARDREFMAX },
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65 { 0, 0, 0}
0
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66 };
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67
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68 int parse_pragma_string(asmstate_t *as, char *str, int ignoreerr)
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69 {
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70 char *p;
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71 int i;
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72 const char *np = str;
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73 int pragmas = as -> pragmas;
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74
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75 while (np)
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76 {
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77 p = lw_token(np, ',', &np);
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78 debug_message(as, 200, "Setting pragma %s", p);
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79 for (i = 0; set_pragmas[i].setstr; i++)
0
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80 {
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81 if (!strcasecmp(p, set_pragmas[i].setstr))
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82 {
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83 pragmas |= set_pragmas[i].flag;
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84 goto out;
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85 }
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86 if (!strcasecmp(p, set_pragmas[i].resetstr))
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87 {
108
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88 pragmas &= ~(set_pragmas[i].flag);
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89 goto out;
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90 }
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91 }
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92 /* unrecognized pragma here */
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93 if (!ignoreerr)
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94 {
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95 lw_free(p);
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96 return 0;
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97 }
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98 out:
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99 lw_free(p);
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100 }
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101 as -> pragmas = pragmas;
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102 return 1;
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103 }
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104
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105 PARSEFUNC(pseudo_parse_pragma)
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106 {
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107 char *ps, *t;
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108
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109 for (t = *p; *t && !isspace(*t); t++)
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110 /* do nothing */ ;
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111
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112 ps = lw_strndup(*p, t - *p);
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113 *p = t;
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337301ddf74a Fixed error with pragma and *pragma directives
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114
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115 l -> len = 0;
0
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116
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117 if (parse_pragma_string(as, ps, 0) == 0)
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118 {
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119 lwasm_register_error(as, l, "Unrecognized pragma string");
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120 }
81
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
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121 if (as -> pragmas & PRAGMA_NOLIST)
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122 l -> pragmas |= PRAGMA_NOLIST;
0
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123 lw_free(ps);
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124 }
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125
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126 PARSEFUNC(pseudo_parse_starpragma)
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127 {
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128 char *ps, *t;
85
8fa52c3f2970 Make *pragma work correctly
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129
0
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130 for (t = *p; *t && !isspace(*t); t++)
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131 /* do nothing */ ;
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132
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133 ps = lw_strndup(*p, t - *p);
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diff changeset
134 *p = t;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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135
56
337301ddf74a Fixed error with pragma and *pragma directives
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parents: 53
diff changeset
136 l -> len = 0;
337301ddf74a Fixed error with pragma and *pragma directives
lost@l-w.ca
parents: 53
diff changeset
137
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
138 // *pragma must NEVER throw an error
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 parse_pragma_string(as, ps, 1);
81
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
Lost Wizard (lost@starbug3)
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diff changeset
140 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
141 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
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142 lw_free(ps);
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lost@l-w.ca
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143 }
108
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
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144
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145 static int pragma_stack_compare(input_stack_entry *e, void *d)
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146 {
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147 int flag = *((int *)d);
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148 struct pragma_stack_entry *pse = (struct pragma_stack_entry *)e;
110
38c1537857ce Pragma stack at parse stage now works
lost@l-w.ca
parents: 108
diff changeset
149
108
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diff changeset
150 if (pse -> flag == flag)
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151 return 1;
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152 return 0;
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153 }
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154
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diff changeset
155 PARSEFUNC(pseudo_parse_starpragmapop)
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156 {
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157 char *ps, *t;
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158 char *pp;
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diff changeset
159 int i;
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lost@l-w.ca
parents: 85
diff changeset
160 const char *np;
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lost@l-w.ca
parents: 85
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161 struct pragma_stack_entry *pse;
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162
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parents: 85
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163 for (t = *p; *t && !isspace(*t); t++)
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164 /* do nothing */ ;
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165
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166 ps = lw_strndup(*p, t - *p);
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167 *p = t;
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168
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diff changeset
169 l -> len = 0;
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170
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171 // *pragma stuff must never throw an error
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172 np = ps;
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173
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174 while (np)
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175 {
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176 pp = lw_token(np, ',', &np);
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177 for (i = 0; set_pragmas[i].setstr; i++)
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178 {
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179 if (!strcasecmp(pp, set_pragmas[i].setstr) || !strcasecmp(pp, set_pragmas[i].resetstr))
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180 {
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181 pse = (struct pragma_stack_entry *)input_stack_pop(as, 0x42424242, pragma_stack_compare, (void *)&(set_pragmas[i].flag));
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diff changeset
182 if (pse)
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183 {
110
38c1537857ce Pragma stack at parse stage now works
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diff changeset
184 debug_message(as, 100, "Popped pragma string %s", pse->str);
108
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diff changeset
185 parse_pragma_string(as, (char *)&(pse->str), 1);
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186 lw_free(pse);
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187 }
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188 if (set_pragmas[i].flag == PRAGMA_NOLIST)
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diff changeset
189 l -> pragmas |= PRAGMA_NOLIST;
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190 }
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191 }
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diff changeset
192 lw_free(pp);
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193 }
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194
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lost@l-w.ca
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diff changeset
195 lw_free(ps);
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parents: 85
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196 }
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197
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diff changeset
198 PARSEFUNC(pseudo_parse_starpragmapush)
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199 {
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diff changeset
200 char *ps, *t;
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lost@l-w.ca
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diff changeset
201 char *pp;
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lost@l-w.ca
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diff changeset
202 int i;
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lost@l-w.ca
parents: 85
diff changeset
203 const char *np;
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lost@l-w.ca
parents: 85
diff changeset
204 struct pragma_stack_entry *pse;
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diff changeset
205
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diff changeset
206 for (t = *p; *t && !isspace(*t); t++)
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diff changeset
207 /* do nothing */ ;
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diff changeset
208
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diff changeset
209 ps = lw_strndup(*p, t - *p);
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diff changeset
210 *p = t;
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diff changeset
211
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diff changeset
212 l -> len = 0;
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diff changeset
213
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diff changeset
214 // *pragma stuff must never throw an error
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lost@l-w.ca
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diff changeset
215 np = ps;
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diff changeset
216
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lost@l-w.ca
parents: 85
diff changeset
217 while (np)
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parents: 85
diff changeset
218 {
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diff changeset
219 pp = lw_token(np, ',', &np);
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diff changeset
220 for (i = 0; set_pragmas[i].setstr; i++)
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parents: 85
diff changeset
221 {
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parents: 85
diff changeset
222 if (!strcasecmp(pp, set_pragmas[i].setstr) || !strcasecmp(pp, set_pragmas[i].resetstr))
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parents: 85
diff changeset
223 {
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diff changeset
224 /* found set or reset pragma */
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diff changeset
225 /* push pragma state */
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parents: 85
diff changeset
226 if (as -> pragmas & (set_pragmas[i].flag))
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parents: 85
diff changeset
227 {
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diff changeset
228 /* use set string */
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lost@l-w.ca
parents: 85
diff changeset
229 t = (char *)set_pragmas[i].setstr;
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parents: 85
diff changeset
230 }
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lost@l-w.ca
parents: 85
diff changeset
231 else
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parents: 85
diff changeset
232 {
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diff changeset
233 /* use reset string */
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lost@l-w.ca
parents: 85
diff changeset
234 t = (char *)set_pragmas[i].resetstr;
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lost@l-w.ca
parents: 85
diff changeset
235 }
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parents: 85
diff changeset
236 pse = lw_alloc(sizeof(struct pragma_stack_entry) + strlen(t));
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parents: 85
diff changeset
237 pse -> flag = set_pragmas[i].flag;
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diff changeset
238 pse -> magic = 0x42424242;
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lost@l-w.ca
parents: 85
diff changeset
239 strcpy((char *)&(pse -> str), t);
110
38c1537857ce Pragma stack at parse stage now works
lost@l-w.ca
parents: 108
diff changeset
240 debug_message(as, 100, "Pushed pragma string %s", pse->str);
38c1537857ce Pragma stack at parse stage now works
lost@l-w.ca
parents: 108
diff changeset
241
108
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
lost@l-w.ca
parents: 85
diff changeset
242 input_stack_push(as, (input_stack_entry *)pse);
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lost@l-w.ca
parents: 85
diff changeset
243
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
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parents: 85
diff changeset
244 if (set_pragmas[i].flag == PRAGMA_NOLIST)
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lost@l-w.ca
parents: 85
diff changeset
245 l -> pragmas |= PRAGMA_NOLIST;
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lost@l-w.ca
parents: 85
diff changeset
246 }
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lost@l-w.ca
parents: 85
diff changeset
247 }
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
lost@l-w.ca
parents: 85
diff changeset
248 lw_free(pp);
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lost@l-w.ca
parents: 85
diff changeset
249 }
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
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parents: 85
diff changeset
250
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
lost@l-w.ca
parents: 85
diff changeset
251 lw_free(ps);
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lost@l-w.ca
parents: 85
diff changeset
252 }
9960e05cbe3a Added *pragmapush and *pragmapop; still seems to be nonfunctional
lost@l-w.ca
parents: 85
diff changeset
253