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Rev | Author | Line No. | Line |
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5131 | clevermous | 1 | /* |
2 | Copyright (C) 1996-1997 Id Software, Inc. |
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3 | |||
4 | This program is free software; you can redistribute it and/or |
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5 | modify it under the terms of the GNU General Public License |
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6 | as published by the Free Software Foundation; either version 2 |
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7 | of the License, or (at your option) any later version. |
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8 | |||
9 | This program is distributed in the hope that it will be useful, |
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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12 | |||
13 | See the GNU General Public License for more details. |
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14 | |||
15 | You should have received a copy of the GNU General Public License |
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16 | along with this program; if not, write to the Free Software |
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17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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18 | |||
19 | */ |
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20 | |||
21 | #include "quakedef.h" |
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22 | |||
23 | |||
24 | /* |
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25 | |||
26 | */ |
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27 | |||
28 | typedef struct |
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29 | { |
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30 | int s; |
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31 | dfunction_t *f; |
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32 | } prstack_t; |
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33 | |||
34 | #define MAX_STACK_DEPTH 32 |
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35 | prstack_t pr_stack[MAX_STACK_DEPTH]; |
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36 | int pr_depth; |
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37 | |||
38 | #define LOCALSTACK_SIZE 2048 |
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39 | int localstack[LOCALSTACK_SIZE]; |
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40 | int localstack_used; |
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41 | |||
42 | |||
43 | qboolean pr_trace; |
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44 | dfunction_t *pr_xfunction; |
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45 | int pr_xstatement; |
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46 | |||
47 | |||
48 | int pr_argc; |
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49 | |||
50 | char *pr_opnames[] = |
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51 | { |
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52 | "DONE", |
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53 | |||
54 | "MUL_F", |
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55 | "MUL_V", |
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56 | "MUL_FV", |
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57 | "MUL_VF", |
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58 | |||
59 | "DIV", |
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60 | |||
61 | "ADD_F", |
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62 | "ADD_V", |
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63 | |||
64 | "SUB_F", |
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65 | "SUB_V", |
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66 | |||
67 | "EQ_F", |
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68 | "EQ_V", |
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69 | "EQ_S", |
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70 | "EQ_E", |
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71 | "EQ_FNC", |
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72 | |||
73 | "NE_F", |
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74 | "NE_V", |
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75 | "NE_S", |
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76 | "NE_E", |
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77 | "NE_FNC", |
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78 | |||
79 | "LE", |
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80 | "GE", |
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81 | "LT", |
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82 | "GT", |
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83 | |||
84 | "INDIRECT", |
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85 | "INDIRECT", |
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86 | "INDIRECT", |
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87 | "INDIRECT", |
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88 | "INDIRECT", |
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89 | "INDIRECT", |
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90 | |||
91 | "ADDRESS", |
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92 | |||
93 | "STORE_F", |
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94 | "STORE_V", |
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95 | "STORE_S", |
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96 | "STORE_ENT", |
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97 | "STORE_FLD", |
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98 | "STORE_FNC", |
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99 | |||
100 | "STOREP_F", |
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101 | "STOREP_V", |
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102 | "STOREP_S", |
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103 | "STOREP_ENT", |
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104 | "STOREP_FLD", |
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105 | "STOREP_FNC", |
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106 | |||
107 | "RETURN", |
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108 | |||
109 | "NOT_F", |
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110 | "NOT_V", |
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111 | "NOT_S", |
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112 | "NOT_ENT", |
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113 | "NOT_FNC", |
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114 | |||
115 | "IF", |
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116 | "IFNOT", |
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117 | |||
118 | "CALL0", |
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119 | "CALL1", |
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120 | "CALL2", |
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121 | "CALL3", |
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122 | "CALL4", |
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123 | "CALL5", |
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124 | "CALL6", |
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125 | "CALL7", |
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126 | "CALL8", |
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127 | |||
128 | "STATE", |
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129 | |||
130 | "GOTO", |
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131 | |||
132 | "AND", |
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133 | "OR", |
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134 | |||
135 | "BITAND", |
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136 | "BITOR" |
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137 | }; |
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138 | |||
139 | char *PR_GlobalString (int ofs); |
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140 | char *PR_GlobalStringNoContents (int ofs); |
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141 | |||
142 | |||
143 | //============================================================================= |
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144 | |||
145 | /* |
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146 | ================= |
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147 | PR_PrintStatement |
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148 | ================= |
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149 | */ |
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150 | void PR_PrintStatement (dstatement_t *s) |
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151 | { |
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152 | int i; |
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153 | |||
154 | if ( (unsigned)s->op < sizeof(pr_opnames)/sizeof(pr_opnames[0])) |
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155 | { |
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156 | Con_Printf ("%s ", pr_opnames[s->op]); |
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157 | i = strlen(pr_opnames[s->op]); |
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158 | for ( ; i<10 ; i++) |
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159 | Con_Printf (" "); |
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160 | } |
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161 | |||
162 | if (s->op == OP_IF || s->op == OP_IFNOT) |
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163 | Con_Printf ("%sbranch %i",PR_GlobalString(s->a),s->b); |
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164 | else if (s->op == OP_GOTO) |
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165 | { |
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166 | Con_Printf ("branch %i",s->a); |
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167 | } |
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168 | else if ( (unsigned)(s->op - OP_STORE_F) < 6) |
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169 | { |
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170 | Con_Printf ("%s",PR_GlobalString(s->a)); |
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171 | Con_Printf ("%s", PR_GlobalStringNoContents(s->b)); |
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172 | } |
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173 | else |
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174 | { |
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175 | if (s->a) |
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176 | Con_Printf ("%s",PR_GlobalString(s->a)); |
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177 | if (s->b) |
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178 | Con_Printf ("%s",PR_GlobalString(s->b)); |
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179 | if (s->c) |
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180 | Con_Printf ("%s", PR_GlobalStringNoContents(s->c)); |
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181 | } |
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182 | Con_Printf ("\n"); |
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183 | } |
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184 | |||
185 | /* |
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186 | ============ |
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187 | PR_StackTrace |
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188 | ============ |
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189 | */ |
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190 | void PR_StackTrace (void) |
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191 | { |
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192 | dfunction_t *f; |
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193 | int i; |
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194 | |||
195 | if (pr_depth == 0) |
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196 | { |
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197 | Con_Printf (" |
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198 | return; |
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199 | } |
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200 | |||
201 | pr_stack[pr_depth].f = pr_xfunction; |
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202 | for (i=pr_depth ; i>=0 ; i--) |
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203 | { |
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204 | f = pr_stack[i].f; |
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205 | |||
206 | if (!f) |
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207 | { |
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208 | Con_Printf (" |
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209 | } |
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210 | else |
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211 | Con_Printf ("%12s : %s\n", pr_strings + f->s_file, pr_strings + f->s_name); |
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212 | } |
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213 | } |
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214 | |||
215 | |||
216 | /* |
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217 | ============ |
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218 | PR_Profile_f |
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219 | |||
220 | ============ |
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221 | */ |
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222 | void PR_Profile_f (void) |
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223 | { |
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224 | dfunction_t *f, *best; |
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225 | int max; |
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226 | int num; |
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227 | int i; |
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228 | |||
229 | num = 0; |
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230 | do |
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231 | { |
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232 | max = 0; |
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233 | best = NULL; |
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234 | for (i=0 ; i |
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235 | { |
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236 | f = &pr_functions[i]; |
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237 | if (f->profile > max) |
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238 | { |
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239 | max = f->profile; |
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240 | best = f; |
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241 | } |
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242 | } |
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243 | if (best) |
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244 | { |
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245 | if (num < 10) |
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246 | Con_Printf ("%7i %s\n", best->profile, pr_strings+best->s_name); |
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247 | num++; |
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248 | best->profile = 0; |
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249 | } |
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250 | } while (best); |
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251 | } |
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252 | |||
253 | |||
254 | /* |
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255 | ============ |
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256 | PR_RunError |
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257 | |||
258 | Aborts the currently executing function |
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259 | ============ |
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260 | */ |
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261 | void PR_RunError (char *error, ...) |
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262 | { |
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263 | va_list argptr; |
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264 | char string[1024]; |
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265 | |||
266 | va_start (argptr,error); |
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267 | vsprintf (string,error,argptr); |
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268 | va_end (argptr); |
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269 | |||
270 | PR_PrintStatement (pr_statements + pr_xstatement); |
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271 | PR_StackTrace (); |
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272 | Con_Printf ("%s\n", string); |
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273 | |||
274 | pr_depth = 0; // dump the stack so host_error can shutdown functions |
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275 | |||
276 | Host_Error ("Program error"); |
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277 | } |
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278 | |||
279 | /* |
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280 | ============================================================================ |
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281 | PR_ExecuteProgram |
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282 | |||
283 | The interpretation main loop |
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284 | ============================================================================ |
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285 | */ |
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286 | |||
287 | /* |
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288 | ==================== |
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289 | PR_EnterFunction |
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290 | |||
291 | Returns the new program statement counter |
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292 | ==================== |
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293 | */ |
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294 | int PR_EnterFunction (dfunction_t *f) |
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295 | { |
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296 | int i, j, c, o; |
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297 | |||
298 | pr_stack[pr_depth].s = pr_xstatement; |
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299 | pr_stack[pr_depth].f = pr_xfunction; |
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300 | pr_depth++; |
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301 | if (pr_depth >= MAX_STACK_DEPTH) |
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302 | PR_RunError ("stack overflow"); |
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303 | |||
304 | // save off any locals that the new function steps on |
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305 | c = f->locals; |
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306 | if (localstack_used + c > LOCALSTACK_SIZE) |
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307 | PR_RunError ("PR_ExecuteProgram: locals stack overflow\n"); |
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308 | |||
309 | for (i=0 ; i < c ; i++) |
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310 | localstack[localstack_used+i] = ((int *)pr_globals)[f->parm_start + i]; |
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311 | localstack_used += c; |
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312 | |||
313 | // copy parameters |
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314 | o = f->parm_start; |
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315 | for (i=0 ; i |
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316 | { |
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317 | for (j=0 ; j |
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318 | { |
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319 | ((int *)pr_globals)[o] = ((int *)pr_globals)[OFS_PARM0+i*3+j]; |
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320 | o++; |
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321 | } |
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322 | } |
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323 | |||
324 | pr_xfunction = f; |
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325 | return f->first_statement - 1; // offset the s++ |
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326 | } |
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327 | |||
328 | /* |
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329 | ==================== |
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330 | PR_LeaveFunction |
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331 | ==================== |
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332 | */ |
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333 | int PR_LeaveFunction (void) |
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334 | { |
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335 | int i, c; |
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336 | |||
337 | if (pr_depth <= 0) |
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338 | Sys_Error ("prog stack underflow"); |
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339 | |||
340 | // restore locals from the stack |
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341 | c = pr_xfunction->locals; |
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342 | localstack_used -= c; |
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343 | if (localstack_used < 0) |
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344 | PR_RunError ("PR_ExecuteProgram: locals stack underflow\n"); |
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345 | |||
346 | for (i=0 ; i < c ; i++) |
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347 | ((int *)pr_globals)[pr_xfunction->parm_start + i] = localstack[localstack_used+i]; |
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348 | |||
349 | // up stack |
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350 | pr_depth--; |
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351 | pr_xfunction = pr_stack[pr_depth].f; |
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352 | return pr_stack[pr_depth].s; |
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353 | } |
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354 | |||
355 | |||
356 | /* |
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357 | ==================== |
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358 | PR_ExecuteProgram |
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359 | ==================== |
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360 | */ |
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361 | void PR_ExecuteProgram (func_t fnum) |
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362 | { |
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363 | eval_t *a, *b, *c; |
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364 | int s; |
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365 | dstatement_t *st; |
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366 | dfunction_t *f, *newf; |
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367 | int runaway; |
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368 | int i; |
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369 | edict_t *ed; |
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370 | int exitdepth; |
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371 | eval_t *ptr; |
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372 | |||
373 | if (!fnum || fnum >= progs->numfunctions) |
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374 | { |
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375 | if (pr_global_struct->self) |
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376 | ED_Print (PROG_TO_EDICT(pr_global_struct->self)); |
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377 | Host_Error ("PR_ExecuteProgram: NULL function"); |
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378 | } |
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379 | |||
380 | f = &pr_functions[fnum]; |
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381 | |||
382 | runaway = 100000; |
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383 | pr_trace = false; |
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384 | |||
385 | // make a stack frame |
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386 | exitdepth = pr_depth; |
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387 | |||
388 | s = PR_EnterFunction (f); |
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389 | |||
390 | while (1) |
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391 | { |
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392 | s++; // next statement |
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393 | |||
394 | st = &pr_statements[s]; |
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395 | a = (eval_t *)&pr_globals[st->a]; |
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396 | b = (eval_t *)&pr_globals[st->b]; |
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397 | c = (eval_t *)&pr_globals[st->c]; |
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398 | |||
399 | if (!--runaway) |
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400 | PR_RunError ("runaway loop error"); |
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401 | |||
402 | pr_xfunction->profile++; |
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403 | pr_xstatement = s; |
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404 | |||
405 | if (pr_trace) |
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406 | PR_PrintStatement (st); |
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407 | |||
408 | switch (st->op) |
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409 | { |
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410 | case OP_ADD_F: |
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411 | c->_float = a->_float + b->_float; |
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412 | break; |
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413 | case OP_ADD_V: |
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414 | c->vector[0] = a->vector[0] + b->vector[0]; |
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415 | c->vector[1] = a->vector[1] + b->vector[1]; |
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416 | c->vector[2] = a->vector[2] + b->vector[2]; |
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417 | break; |
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418 | |||
419 | case OP_SUB_F: |
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420 | c->_float = a->_float - b->_float; |
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421 | break; |
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422 | case OP_SUB_V: |
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423 | c->vector[0] = a->vector[0] - b->vector[0]; |
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424 | c->vector[1] = a->vector[1] - b->vector[1]; |
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425 | c->vector[2] = a->vector[2] - b->vector[2]; |
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426 | break; |
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427 | |||
428 | case OP_MUL_F: |
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429 | c->_float = a->_float * b->_float; |
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430 | break; |
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431 | case OP_MUL_V: |
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432 | c->_float = a->vector[0]*b->vector[0] |
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433 | + a->vector[1]*b->vector[1] |
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434 | + a->vector[2]*b->vector[2]; |
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435 | break; |
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436 | case OP_MUL_FV: |
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437 | c->vector[0] = a->_float * b->vector[0]; |
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438 | c->vector[1] = a->_float * b->vector[1]; |
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439 | c->vector[2] = a->_float * b->vector[2]; |
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440 | break; |
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441 | case OP_MUL_VF: |
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442 | c->vector[0] = b->_float * a->vector[0]; |
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443 | c->vector[1] = b->_float * a->vector[1]; |
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444 | c->vector[2] = b->_float * a->vector[2]; |
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445 | break; |
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446 | |||
447 | case OP_DIV_F: |
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448 | c->_float = a->_float / b->_float; |
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449 | break; |
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450 | |||
451 | case OP_BITAND: |
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452 | c->_float = (int)a->_float & (int)b->_float; |
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453 | break; |
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454 | |||
455 | case OP_BITOR: |
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456 | c->_float = (int)a->_float | (int)b->_float; |
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457 | break; |
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458 | |||
459 | |||
460 | case OP_GE: |
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461 | c->_float = a->_float >= b->_float; |
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462 | break; |
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463 | case OP_LE: |
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464 | c->_float = a->_float <= b->_float; |
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465 | break; |
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466 | case OP_GT: |
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467 | c->_float = a->_float > b->_float; |
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468 | break; |
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469 | case OP_LT: |
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470 | c->_float = a->_float < b->_float; |
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471 | break; |
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472 | case OP_AND: |
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473 | c->_float = a->_float && b->_float; |
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474 | break; |
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475 | case OP_OR: |
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476 | c->_float = a->_float || b->_float; |
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477 | break; |
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478 | |||
479 | case OP_NOT_F: |
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480 | c->_float = !a->_float; |
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481 | break; |
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482 | case OP_NOT_V: |
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483 | c->_float = !a->vector[0] && !a->vector[1] && !a->vector[2]; |
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484 | break; |
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485 | case OP_NOT_S: |
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486 | c->_float = !a->string || !pr_strings[a->string]; |
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487 | break; |
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488 | case OP_NOT_FNC: |
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489 | c->_float = !a->function; |
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490 | break; |
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491 | case OP_NOT_ENT: |
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492 | c->_float = (PROG_TO_EDICT(a->edict) == sv.edicts); |
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493 | break; |
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494 | |||
495 | case OP_EQ_F: |
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496 | c->_float = a->_float == b->_float; |
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497 | break; |
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498 | case OP_EQ_V: |
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499 | c->_float = (a->vector[0] == b->vector[0]) && |
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500 | (a->vector[1] == b->vector[1]) && |
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501 | (a->vector[2] == b->vector[2]); |
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502 | break; |
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503 | case OP_EQ_S: |
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504 | c->_float = !strcmp(pr_strings+a->string,pr_strings+b->string); |
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505 | break; |
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506 | case OP_EQ_E: |
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507 | c->_float = a->_int == b->_int; |
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508 | break; |
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509 | case OP_EQ_FNC: |
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510 | c->_float = a->function == b->function; |
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511 | break; |
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512 | |||
513 | |||
514 | case OP_NE_F: |
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515 | c->_float = a->_float != b->_float; |
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516 | break; |
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517 | case OP_NE_V: |
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518 | c->_float = (a->vector[0] != b->vector[0]) || |
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519 | (a->vector[1] != b->vector[1]) || |
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520 | (a->vector[2] != b->vector[2]); |
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521 | break; |
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522 | case OP_NE_S: |
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523 | c->_float = strcmp(pr_strings+a->string,pr_strings+b->string); |
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524 | break; |
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525 | case OP_NE_E: |
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526 | c->_float = a->_int != b->_int; |
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527 | break; |
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528 | case OP_NE_FNC: |
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529 | c->_float = a->function != b->function; |
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530 | break; |
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531 | |||
532 | //================== |
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533 | case OP_STORE_F: |
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534 | case OP_STORE_ENT: |
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535 | case OP_STORE_FLD: // integers |
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536 | case OP_STORE_S: |
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537 | case OP_STORE_FNC: // pointers |
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538 | b->_int = a->_int; |
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539 | break; |
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540 | case OP_STORE_V: |
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541 | b->vector[0] = a->vector[0]; |
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542 | b->vector[1] = a->vector[1]; |
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543 | b->vector[2] = a->vector[2]; |
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544 | break; |
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545 | |||
546 | case OP_STOREP_F: |
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547 | case OP_STOREP_ENT: |
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548 | case OP_STOREP_FLD: // integers |
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549 | case OP_STOREP_S: |
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550 | case OP_STOREP_FNC: // pointers |
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551 | ptr = (eval_t *)((byte *)sv.edicts + b->_int); |
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552 | ptr->_int = a->_int; |
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553 | break; |
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554 | case OP_STOREP_V: |
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555 | ptr = (eval_t *)((byte *)sv.edicts + b->_int); |
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556 | ptr->vector[0] = a->vector[0]; |
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557 | ptr->vector[1] = a->vector[1]; |
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558 | ptr->vector[2] = a->vector[2]; |
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559 | break; |
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560 | |||
561 | case OP_ADDRESS: |
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562 | ed = PROG_TO_EDICT(a->edict); |
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563 | #ifdef PARANOID |
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564 | NUM_FOR_EDICT(ed); // make sure it's in range |
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565 | #endif |
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566 | if (ed == (edict_t *)sv.edicts && sv.state == ss_active) |
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567 | PR_RunError ("assignment to world entity"); |
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568 | c->_int = (byte *)((int *)&ed->v + b->_int) - (byte *)sv.edicts; |
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569 | break; |
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570 | |||
571 | case OP_LOAD_F: |
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572 | case OP_LOAD_FLD: |
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573 | case OP_LOAD_ENT: |
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574 | case OP_LOAD_S: |
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575 | case OP_LOAD_FNC: |
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576 | ed = PROG_TO_EDICT(a->edict); |
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577 | #ifdef PARANOID |
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578 | NUM_FOR_EDICT(ed); // make sure it's in range |
||
579 | #endif |
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580 | a = (eval_t *)((int *)&ed->v + b->_int); |
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581 | c->_int = a->_int; |
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582 | break; |
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583 | |||
584 | case OP_LOAD_V: |
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585 | ed = PROG_TO_EDICT(a->edict); |
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586 | #ifdef PARANOID |
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587 | NUM_FOR_EDICT(ed); // make sure it's in range |
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588 | #endif |
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589 | a = (eval_t *)((int *)&ed->v + b->_int); |
||
590 | c->vector[0] = a->vector[0]; |
||
591 | c->vector[1] = a->vector[1]; |
||
592 | c->vector[2] = a->vector[2]; |
||
593 | break; |
||
594 | |||
595 | //================== |
||
596 | |||
597 | case OP_IFNOT: |
||
598 | if (!a->_int) |
||
599 | s += st->b - 1; // offset the s++ |
||
600 | break; |
||
601 | |||
602 | case OP_IF: |
||
603 | if (a->_int) |
||
604 | s += st->b - 1; // offset the s++ |
||
605 | break; |
||
606 | |||
607 | case OP_GOTO: |
||
608 | s += st->a - 1; // offset the s++ |
||
609 | break; |
||
610 | |||
611 | case OP_CALL0: |
||
612 | case OP_CALL1: |
||
613 | case OP_CALL2: |
||
614 | case OP_CALL3: |
||
615 | case OP_CALL4: |
||
616 | case OP_CALL5: |
||
617 | case OP_CALL6: |
||
618 | case OP_CALL7: |
||
619 | case OP_CALL8: |
||
620 | pr_argc = st->op - OP_CALL0; |
||
621 | if (!a->function) |
||
622 | PR_RunError ("NULL function"); |
||
623 | |||
624 | newf = &pr_functions[a->function]; |
||
625 | |||
626 | if (newf->first_statement < 0) |
||
627 | { // negative statements are built in functions |
||
628 | i = -newf->first_statement; |
||
629 | if (i >= pr_numbuiltins) |
||
630 | PR_RunError ("Bad builtin call number"); |
||
631 | pr_builtins[i] (); |
||
632 | break; |
||
633 | } |
||
634 | |||
635 | s = PR_EnterFunction (newf); |
||
636 | break; |
||
637 | |||
638 | case OP_DONE: |
||
639 | case OP_RETURN: |
||
640 | pr_globals[OFS_RETURN] = pr_globals[st->a]; |
||
641 | pr_globals[OFS_RETURN+1] = pr_globals[st->a+1]; |
||
642 | pr_globals[OFS_RETURN+2] = pr_globals[st->a+2]; |
||
643 | |||
644 | s = PR_LeaveFunction (); |
||
645 | if (pr_depth == exitdepth) |
||
646 | return; // all done |
||
647 | break; |
||
648 | |||
649 | case OP_STATE: |
||
650 | ed = PROG_TO_EDICT(pr_global_struct->self); |
||
651 | #ifdef FPS_20 |
||
652 | ed->v.nextthink = pr_global_struct->time + 0.05; |
||
653 | #else |
||
654 | ed->v.nextthink = pr_global_struct->time + 0.1; |
||
655 | #endif |
||
656 | if (a->_float != ed->v.frame) |
||
657 | { |
||
658 | ed->v.frame = a->_float; |
||
659 | } |
||
660 | ed->v.think = b->function; |
||
661 | break; |
||
662 | |||
663 | default: |
||
664 | PR_RunError ("Bad opcode %i", st->op); |
||
665 | } |
||
666 | } |
||
667 | |||
668 | }>>=>>>=>>>>10>> |