pike.git/src/interpret.h:0612446159531b1132065066af62b661bfacc745

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 /*\ ||| This file a part of Pike, and is copyright by Fredrik Hubinette ||| Pike is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/ /* * $Id: interpret.h,v 1.84 2001/05/16 23:35:52 hubbe Exp $ */ #ifndef INTERPRET_H #define INTERPRET_H #include "global.h" #include "program.h" #include "pike_error.h" struct Pike_interpreter { /* Swapped variables */ struct svalue *stack_pointer; struct svalue *evaluator_stack; struct svalue **mark_stack_pointer; struct svalue **mark_stack; struct pike_frame *frame_pointer; int evaluator_stack_malloced; int mark_stack_malloced; JMP_BUF *recoveries; #ifdef PIKE_THREADS struct object * thread_id; #endif char *stack_top; DO_IF_SECURITY(struct object *current_creds;) int svalue_stack_margin; int c_stack_margin; #ifdef PROFILING #ifdef HAVE_GETHRTIME long long accounted_time; long long time_base; #endif char *stack_bottom; #endif #ifdef THREAD_TRACE int t_flag; #endif /* THREAD_TRACE */ }; #ifndef STRUCT_FRAME_DECLARED #define STRUCT_FRAME_DECLARED #endif struct pike_frame { INT32 refs; /* must be first */ INT32 args; unsigned INT16 fun; INT16 num_locals; INT16 num_args; unsigned INT16 flags; INT16 ident; struct pike_frame *next; struct pike_frame *scope; unsigned char *pc; struct svalue *locals; /* This is <= locals, and this is where the * return value should go. */ struct svalue *save_sp; /* This tells us the current level of * svalues on the stack that can be discarded once the * current function is done with them */ struct svalue *expendible; struct svalue **save_mark_sp; struct svalue **mark_sp_base; struct object *current_object; DO_IF_SECURITY(struct object *current_creds;) #if defined(PROFILING) && defined(HAVE_GETHRTIME) long long children_base; long long start_time; INT32 self_time_base; #endif struct inherit context; char *current_storage; }; #define PIKE_FRAME_RETURN_INTERNAL 1 #define PIKE_FRAME_RETURN_POP 2 #define PIKE_FRAME_MALLOCED_LOCALS 0x8000 struct external_variable_context { struct object *o; struct inherit *inherit; int parent_identifier; }; #ifdef PIKE_DEBUG #define debug_check_stack() do{if(Pike_sp<Pike_interpreter.evaluator_stack)fatal("Stack error.\n");}while(0) #define check__positive(X,Y) if((X)<0) fatal Y #include "pike_error.h" #else #define check__positive(X,Y) #define debug_check_stack() #endif #define low_stack_check(X) \ (Pike_sp - Pike_interpreter.evaluator_stack + \ Pike_interpreter.svalue_stack_margin + (X) >= Pike_stack_size) PMOD_EXPORT const char *Pike_check_stack_errmsg; #define check_stack(X) do { \ if(low_stack_check(X)) \ ((void (*)(const char *, ...))Pike_error)( \ Pike_check_stack_errmsg, \ PTRDIFF_T_TO_LONG(Pike_sp - Pike_interpreter.evaluator_stack), \ PTRDIFF_T_TO_LONG(Pike_stack_size), \ PTRDIFF_T_TO_LONG(X)); \ }while(0) PMOD_EXPORT const char *Pike_check_mark_stack_errmsg; #define check_mark_stack(X) do { \ if(Pike_mark_sp - Pike_interpreter.mark_stack + (X) >= Pike_stack_size) \ ((void (*)(const char*, ...))Pike_error)(Pike_check_mark_stack_errmsg); \ }while(0) PMOD_EXPORT const char *Pike_check_c_stack_errmsg; #define check_c_stack(X) do { \ ptrdiff_t x_= ((char *)&x_) + \ STACK_DIRECTION * (Pike_interpreter.c_stack_margin + (X)) - \ Pike_interpreter.stack_top ; \ x_*=STACK_DIRECTION; \ if(x_>0) \ ((void (*)(const char*, ...))low_error)(Pike_check_c_stack_errmsg); \ }while(0) #define fatal_check_c_stack(X) do { \ ptrdiff_t x_= \ ((char *)&x_) + STACK_DIRECTION * (X) - Pike_interpreter.stack_top ; \ x_*=STACK_DIRECTION; \ if(x_>0) { \ ((void (*)(const char*, ...))fatal)(Pike_check_c_stack_errmsg); \ } \ }while(0) #define pop_stack() do{ free_svalue(--Pike_sp); debug_check_stack(); }while(0) #ifdef __ECL #define MAYBE_CAST_TO_LONG(X) (X) #else /* !__ECL */ #define MAYBE_CAST_TO_LONG(X) ((long)(X)) #endif /* __ECL */ #define pop_n_elems(X) \ do { ptrdiff_t x_=(X); if(x_) { \ check__positive(x_, ("Popping negative number of args.... (%ld) \n", \ MAYBE_CAST_TO_LONG(x_))); \ Pike_sp -= x_; debug_check_stack(); \ free_svalues(Pike_sp, x_, BIT_MIXED); \ } } while (0) #define stack_pop_n_elems_keep_top(X) \ do { struct svalue s=Pike_sp[-1]; Pike_sp[-1]=Pike_sp[-1-(X)]; Pike_sp[-1-(X)]=s; \ pop_n_elems(X); } while (0) #define push_program(P) do{ struct program *_=(P); debug_malloc_touch(_); Pike_sp->u.program=_; Pike_sp++->type=PIKE_T_PROGRAM; }while(0) #define push_int(I) do{ INT_TYPE _=(I); Pike_sp->u.integer=_;Pike_sp->type=PIKE_T_INT;Pike_sp++->subtype=NUMBER_NUMBER; }while(0) #define push_mapping(M) do{ struct mapping *_=(M); debug_malloc_touch(_); Pike_sp->u.mapping=_; Pike_sp++->type=PIKE_T_MAPPING; }while(0) #define push_array(A) do{ struct array *_=(A); debug_malloc_touch(_); Pike_sp->u.array=_ ;Pike_sp++->type=PIKE_T_ARRAY; }while(0) #define push_multiset(L) do{ struct multiset *_=(L); debug_malloc_touch(_); Pike_sp->u.multiset=_; Pike_sp++->type=PIKE_T_MULTISET; }while(0) #define push_string(S) do{ struct pike_string *_=(S); debug_malloc_touch(_); Pike_sp->subtype=0; Pike_sp->u.string=_; Pike_sp++->type=PIKE_T_STRING; }while(0) #define push_type_value(S) do{ struct pike_type *_=(S); debug_malloc_touch(_); Pike_sp->u.type=_; Pike_sp++->type=PIKE_T_TYPE; }while(0) #define push_object(O) do{ struct object *_=(O); debug_malloc_touch(_); Pike_sp->u.object=_; Pike_sp++->type=PIKE_T_OBJECT; }while(0) #define push_float(F) do{ FLOAT_TYPE _=(F); Pike_sp->u.float_number=_; Pike_sp++->type=PIKE_T_FLOAT; }while(0) #define push_text(T) push_string(make_shared_string((T))) #define push_constant_text(T) do{ Pike_sp->subtype=0; MAKE_CONSTANT_SHARED_STRING(Pike_sp->u.string,T); Pike_sp++->type=PIKE_T_STRING; }while(0) #define ref_push_program(P) do{ struct program *_=(P); debug_malloc_touch(_); _->refs++; Pike_sp->u.program=_; Pike_sp++->type=PIKE_T_PROGRAM; }while(0) #define ref_push_mapping(M) do{ struct mapping *_=(M); debug_malloc_touch(_); _->refs++; Pike_sp->u.mapping=_; Pike_sp++->type=PIKE_T_MAPPING; }while(0) #define ref_push_array(A) do{ struct array *_=(A); debug_malloc_touch(_); _->refs++; Pike_sp->u.array=_ ;Pike_sp++->type=PIKE_T_ARRAY; }while(0) #define ref_push_multiset(L) do{ struct multiset *_=(L); debug_malloc_touch(_); _->refs++; Pike_sp->u.multiset=_; Pike_sp++->type=PIKE_T_MULTISET; }while(0) #define ref_push_string(S) do{ struct pike_string *_=(S); debug_malloc_touch(_); _->refs++; Pike_sp->subtype=0; Pike_sp->u.string=_; Pike_sp++->type=PIKE_T_STRING; }while(0) #define ref_push_type_value(S) do{ struct pike_type *_=(S); debug_malloc_touch(_); _->refs++; Pike_sp->u.type=_; Pike_sp++->type=PIKE_T_TYPE; }while(0) #define ref_push_object(O) do{ struct object *_=(O); debug_malloc_touch(_); _->refs++; Pike_sp->u.object=_; Pike_sp++->type=PIKE_T_OBJECT; }while(0) #define push_svalue(S) do { const struct svalue *_=(S); assign_svalue_no_free(Pike_sp,_); Pike_sp++; }while(0) #define stack_dup() push_svalue(Pike_sp-1) #define stack_swap() do { struct svalue _=Pike_sp[-1]; Pike_sp[-1]=Pike_sp[-2]; Pike_sp[-2]=_; } while(0) #define stack_pop_to_no_free(X) (*(X)=*--Pike_sp) #define stack_pop_to(X) do { struct svalue *_=(X); free_svalue(_); stack_pop_to_no_free(_); }while(0) /* This pops a number of arguments from the stack but keeps the top * element on top. Used for popping the arguments while keeping the * return value. */ #define stack_unlink(X) do { if(X) { free_svalue(Pike_sp-(X)-1); Pike_sp[-(X)-1]=Pike_sp[-1]; Pike_sp--; pop_n_elems(X-1); } }while(0) #define free_pike_frame(F) do{ struct pike_frame *f_=(F); debug_malloc_touch(f_); if(!--f_->refs) really_free_pike_frame(f_); }while(0) #define POP_PIKE_FRAME() do { \ struct pike_frame *tmp_=Pike_fp->next; \ if(!--Pike_fp->refs) \ { \ really_free_pike_frame(Pike_fp); \ }else{ \ DO_IF_DEBUG(if( Pike_fp->locals + Pike_fp->num_locals > Pike_sp || Pike_sp < Pike_fp->expendible) fatal("Stack failure in POP_PIKE_FRAME %p+%d=%p %p %p!\n",Pike_fp->locals,Pike_fp->num_locals,Pike_fp->locals+Pike_fp->num_locals,Pike_sp,Pike_fp->expendible)); \ debug_malloc_touch(Pike_fp); \ if(Pike_fp->num_locals) \ { \ struct svalue *s=(struct svalue *)xalloc(sizeof(struct svalue)* \ Pike_fp->num_locals); \ assign_svalues_no_free(s,Pike_fp->locals,Pike_fp->num_locals,BIT_MIXED); \ Pike_fp->locals=s; \ Pike_fp->flags|=PIKE_FRAME_MALLOCED_LOCALS; \ }else{ \ Pike_fp->locals=0; \ } \ Pike_fp->next=0; \ } \ Pike_fp=tmp_; \ }while(0) enum apply_type { APPLY_STACK, /* The function is the first argument */ APPLY_SVALUE, /* arg1 points to an svalue containing the function */ APPLY_LOW /* arg1 is the object pointer,(int)arg2 the function */ }; #define APPLY_MASTER(FUN,ARGS) \ do{ \ static int fun_, master_cnt=0; \ struct object *master_ob=master(); \ if(master_cnt != master_ob->prog->id) \ { \ fun_=find_identifier(FUN,master_ob->prog); \ master_cnt = master_ob->prog->id; \ } \ apply_low(master_ob, fun_, ARGS); \ }while(0) #define SAFE_APPLY_MASTER(FUN,ARGS) \ do{ \ static int fun_, master_cnt=0; \ struct object *master_ob=master(); \ if(master_cnt != master_ob->prog->id) \ { \ fun_=find_identifier(FUN,master_ob->prog); \ master_cnt = master_ob->prog->id; \ } \ safe_apply_low(master_ob, fun_, ARGS); \ }while(0) #define check_threads_etc() \ call_callback(& evaluator_callbacks, (void *)0) #ifdef PIKE_DEBUG #define fast_check_threads_etc(X) do { \ static int div_; if(d_flag || !(div_++& ((1<<(X))-1))) check_threads_etc(); } while(0) #else #define fast_check_threads_etc(X) do { \ static int div_; if(!(div_++& ((1<<(X))-1))) check_threads_etc(); } while(0) #endif #include "block_alloc_h.h" /* Prototypes begin here */ void push_sp_mark(void); ptrdiff_t pop_sp_mark(void); PMOD_EXPORT void init_interpreter(void); void lvalue_to_svalue_no_free(struct svalue *to,struct svalue *lval); PMOD_EXPORT void assign_lvalue(struct svalue *lval,struct svalue *from); PMOD_EXPORT union anything *get_pointer_if_this_type(struct svalue *lval, TYPE_T t); void print_return_value(void); void reset_evaluator(void); struct backlog; void dump_backlog(void); BLOCK_ALLOC(pike_frame,128) PMOD_EXPORT void find_external_context(struct external_variable_context *loc, int arg2); int low_mega_apply(enum apply_type type, INT32 args, void *arg1, void *arg2); void low_return(void); void unlink_previous_frame(void); void mega_apply(enum apply_type type, INT32 args, void *arg1, void *arg2); PMOD_EXPORT void f_call_function(INT32 args); PMOD_EXPORT void call_handle_error(void); PMOD_EXPORT int apply_low_safe_and_stupid(struct object *o, INT32 offset); PMOD_EXPORT void safe_apply_low(struct object *o,int fun,int args); PMOD_EXPORT void safe_apply(struct object *o, char *fun ,INT32 args); PMOD_EXPORT void apply_lfun(struct object *o, int fun, int args); PMOD_EXPORT void apply_shared(struct object *o, struct pike_string *fun, int args); PMOD_EXPORT void apply(struct object *o, char *fun, int args); PMOD_EXPORT void apply_svalue(struct svalue *s, INT32 args); PMOD_EXPORT void slow_check_stack(void); PMOD_EXPORT void custom_check_stack(ptrdiff_t amount, const char *fmt, ...) ATTRIBUTE((format (printf, 2, 3))); PMOD_EXPORT void cleanup_interpret(void); void really_clean_up_interpret(void); /* Prototypes end here */ /* These need to be after the prototypes, * to avoid implicit declaration of mega_apply(). */ #ifdef __ECL static inline void apply_low(struct object *o, ptrdiff_t fun, INT32 args) { mega_apply(APPLY_LOW, args, (void*)o, (void*)fun); } static inline void strict_apply_svalue(struct svalue *sval, INT32 args) { mega_apply(APPLY_SVALUE, args, (void*)sval, 0); } #else /* !__ECL */ #define apply_low(O,FUN,ARGS) \ mega_apply(APPLY_LOW, (ARGS), (void*)(O),(void*)(ptrdiff_t)(FUN)) #define strict_apply_svalue(SVAL,ARGS) \ mega_apply(APPLY_SVALUE, (ARGS), (void*)(SVAL),0) #endif /* __ECL */ PMOD_EXPORT extern int d_flag; /* really in main.c */ PMOD_EXPORT extern int Pike_stack_size; PMOD_EXPORT struct callback; PMOD_EXPORT extern struct callback_list evaluator_callbacks; PMOD_EXPORT extern void call_callback(struct callback_list *, void *); /* Things to try: * we could reduce thread swapping to a pointer operation if * we do something like: * #define Pike_interpreter (*Pike_interpreter_pointer) * * Since global variables are usually accessed through indirection * anyways, it might not make any speed differance. * * The above define could also be used to facilitate dynamic loading * on Win32.. */ PMOD_EXPORT extern struct Pike_interpreter Pike_interpreter; #define Pike_sp Pike_interpreter.stack_pointer #define Pike_fp Pike_interpreter.frame_pointer #define Pike_mark_sp Pike_interpreter.mark_stack_pointer #ifdef PIKE_THREADS #define Pike_thread_id Pike_interpreter.thread_id #endif #ifndef NO_PIKE_SHORTHAND /* Shouldn't this be in Pike_interpreter? - Hubbe */ #define sp Pike_sp #define fp Pike_fp #define mark_sp Pike_mark_sp #endif /* !NO_PIKE_SHORTHAND */ #define CURRENT_STORAGE (dmalloc_touch(struct pike_frame *,Pike_fp)->current_storage) #endif

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