home *** CD-ROM | disk | FTP | other *** search
-
- /* A Bison parser, made from expread.y */
-
- #define INT 258
- #define CHAR 259
- #define FLOAT 260
- #define NAME 261
- #define TYPENAME 262
- #define STRING 263
- #define STRUCT 264
- #define UNION 265
- #define ENUM 266
- #define SIZEOF 267
- #define UNSIGNED 268
- #define COLONCOLON 269
- #define LAST 270
- #define REGNAME 271
- #define VARIABLE 272
- #define ASSIGN_MODIFY 273
- #define ABOVE_COMMA 274
- #define OR 275
- #define AND 276
- #define EQUAL 277
- #define NOTEQUAL 278
- #define LEQ 279
- #define GEQ 280
- #define LSH 281
- #define RSH 282
- #define UNARY 283
- #define INCREMENT 284
- #define DECREMENT 285
- #define ARROW 286
-
- #line 30 "expread.y"
-
- #include "defs.h"
- #include "param.h"
- #include "symtab.h"
- #include "frame.h"
- #include "expression.h"
-
- #include <stdio.h>
-
- #ifdef atarist
- extern int gcc_mshort;
- #endif
-
- extern CORE_ADDR end_of_text_addr;
- static struct expression *expout;
- static int expout_size;
- static int expout_ptr;
-
- static int yylex ();
- static yyerror ();
- static void write_exp_elt ();
- static void write_exp_string ();
- static void start_arglist ();
- static int end_arglist ();
- static void free_funcalls ();
- static char *copy_name ();
-
- /* If this is nonzero, this block is used as the lexical context
- for symbol names. */
-
- static struct block *expression_context_block;
-
- /* Number of arguments seen so far in innermost function call. */
- static int arglist_len;
-
- /* Data structure for saving values of arglist_len
- for function calls whose arguments contain other function calls. */
-
- struct funcall
- {
- struct funcall *next;
- int arglist_len;
- };
-
- struct funcall *funcall_chain;
-
- /* This kind of datum is used to represent the name
- of a symbol token. */
-
- struct stoken
- {
- char *ptr;
- int length;
- };
-
- #line 90 "expread.y"
- typedef union
- {
- long lval;
- double dval;
- struct symbol *sym;
- struct type *tval;
- struct stoken sval;
- int voidval;
- struct block *bval;
- enum exp_opcode opcode;
- struct internalvar *ivar;
- } YYSTYPE;
-
- #ifndef YYLTYPE
- typedef
- struct yyltype
- {
- int timestamp;
- int first_line;
- int first_column;
- int last_line;
- int last_column;
- char *text;
- }
- yyltype;
-
- #define YYLTYPE yyltype
- #endif
-
- #include <stdio.h>
-
- #ifndef __STDC__
- #define const
- #endif
-
-
-
- #define YYFINAL 125
- #define YYFLAG -32768
- #define YYNTBASE 56
-
- #define YYTRANSLATE(x) ((unsigned)(x) <= 286 ? yytranslate[x] : 66)
-
- static const char yytranslate[] = { 0,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 48, 2, 2, 2, 40, 27, 2, 51,
- 52, 38, 36, 19, 37, 46, 39, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 55, 2, 30,
- 21, 31, 22, 41, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 47, 2, 50, 26, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 53, 25, 54, 49, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 1, 2, 3, 4, 5,
- 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 20, 23, 24, 28, 29, 32, 33,
- 34, 35, 42, 43, 44, 45
- };
-
- static const short yyprhs[] = { 0,
- 0, 2, 4, 8, 11, 14, 17, 20, 23, 26,
- 29, 32, 35, 38, 42, 46, 51, 52, 58, 59,
- 61, 65, 70, 75, 79, 83, 87, 91, 95, 99,
- 103, 107, 111, 115, 119, 123, 127, 131, 135, 139,
- 143, 147, 151, 155, 161, 165, 169, 171, 173, 175,
- 177, 179, 181, 183, 188, 190, 192, 196, 200, 202,
- 204, 207, 209, 212, 215, 218, 221, 223
- };
-
- static const short yyrhs[] = { 57,
- 0, 58, 0, 57, 19, 58, 0, 38, 58, 0,
- 27, 58, 0, 37, 58, 0, 48, 58, 0, 49,
- 58, 0, 43, 58, 0, 44, 58, 0, 58, 43,
- 0, 58, 44, 0, 12, 58, 0, 58, 45, 65,
- 0, 58, 46, 65, 0, 58, 47, 57, 50, 0,
- 0, 58, 51, 59, 60, 52, 0, 0, 58, 0,
- 60, 19, 58, 0, 53, 63, 54, 58, 0, 51,
- 63, 52, 58, 0, 51, 57, 52, 0, 58, 41,
- 58, 0, 58, 38, 58, 0, 58, 39, 58, 0,
- 58, 40, 58, 0, 58, 36, 58, 0, 58, 37,
- 58, 0, 58, 34, 58, 0, 58, 35, 58, 0,
- 58, 28, 58, 0, 58, 29, 58, 0, 58, 32,
- 58, 0, 58, 33, 58, 0, 58, 30, 58, 0,
- 58, 31, 58, 0, 58, 27, 58, 0, 58, 26,
- 58, 0, 58, 25, 58, 0, 58, 24, 58, 0,
- 58, 23, 58, 0, 58, 22, 58, 55, 58, 0,
- 58, 21, 58, 0, 58, 18, 58, 0, 3, 0,
- 4, 0, 5, 0, 62, 0, 15, 0, 16, 0,
- 17, 0, 12, 51, 63, 52, 0, 8, 0, 65,
- 0, 61, 14, 65, 0, 61, 14, 65, 0, 6,
- 0, 64, 0, 63, 38, 0, 7, 0, 9, 65,
- 0, 10, 65, 0, 11, 65, 0, 13, 65, 0,
- 6, 0, 7, 0
- };
-
- #if YYDEBUG != 0
- static const short yyrline[] = { 0,
- 151, 155, 156, 161, 164, 167, 171, 175, 179, 183,
- 187, 191, 195, 199, 205, 211, 215, 219, 225, 228,
- 232, 236, 242, 248, 254, 258, 262, 266, 270, 274,
- 278, 282, 286, 290, 294, 298, 302, 306, 310, 314,
- 318, 322, 326, 330, 334, 338, 344, 356, 363, 370,
- 373, 379, 385, 391, 398, 404, 423, 432, 443, 487,
- 488, 493, 496, 499, 502, 505, 509, 510
- };
-
- static const char * const yytname[] = { "$",
- "error","$illegal.","INT","CHAR","FLOAT","NAME","TYPENAME","STRING","STRUCT","UNION",
- "ENUM","SIZEOF","UNSIGNED","COLONCOLON","LAST","REGNAME","VARIABLE","ASSIGN_MODIFY","','","ABOVE_COMMA",
- "'='","'?'","OR","AND","'|'","'^'","'&'","EQUAL","NOTEQUAL","'<'",
- "'>'","LEQ","GEQ","LSH","RSH","'+'","'-'","'*'","'/'","'%'",
- "'@'","UNARY","INCREMENT","DECREMENT","ARROW","'.'","'['","'!'","'~'","']'",
- "'('","')'","'{'","'}'","':'","start","exp1","exp","@1","arglist",
- "block","variable","type","typebase","name",""
- };
- #endif
-
- static const short yyr1[] = { 0,
- 56, 57, 57, 58, 58, 58, 58, 58, 58, 58,
- 58, 58, 58, 58, 58, 58, 59, 58, 60, 60,
- 60, 58, 58, 58, 58, 58, 58, 58, 58, 58,
- 58, 58, 58, 58, 58, 58, 58, 58, 58, 58,
- 58, 58, 58, 58, 58, 58, 58, 58, 58, 58,
- 58, 58, 58, 58, 58, 61, 61, 62, 62, 63,
- 63, 64, 64, 64, 64, 64, 65, 65
- };
-
- static const short yyr2[] = { 0,
- 1, 1, 3, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 3, 3, 4, 0, 5, 0, 1,
- 3, 4, 4, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 5, 3, 3, 1, 1, 1, 1,
- 1, 1, 1, 4, 1, 1, 3, 3, 1, 1,
- 2, 1, 2, 2, 2, 2, 1, 1
- };
-
- static const short yydefact[] = { 0,
- 47, 48, 49, 59, 68, 55, 0, 51, 52, 53,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
- 2, 0, 50, 56, 0, 13, 5, 6, 4, 9,
- 10, 7, 8, 62, 0, 0, 0, 0, 0, 0,
- 60, 62, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 11, 12, 0, 0,
- 0, 17, 0, 0, 67, 63, 64, 65, 66, 24,
- 61, 0, 0, 3, 46, 45, 0, 43, 42, 41,
- 40, 39, 33, 34, 37, 38, 35, 36, 31, 32,
- 29, 30, 26, 27, 28, 25, 14, 15, 0, 19,
- 58, 54, 23, 22, 0, 16, 20, 0, 44, 0,
- 18, 21, 0, 0, 0
- };
-
- static const short yydefgoto[] = { 123,
- 39, 21, 110, 118, 22, 23, 40, 41, 24
- };
-
- static const short yypact[] = { 125,
- -32768,-32768,-32768, 4,-32768,-32768, 143,-32768,-32768,-32768,
- 125, 125, 125, 125, 125, 125, 125, 74, 6, 11,
- 217, 50,-32768,-32768, 74, 456, 456, 456, 456, 456,
- 456, 456, 456, 53, 67, 67, 67, 67, -17, -26,
- -32768,-32768, -27, 125, 125, 125, 125, 125, 125, 125,
- 125, 125, 125, 125, 125, 125, 125, 125, 125, 125,
- 125, 125, 125, 125, 125, 125,-32768,-32768, 67, 67,
- 125,-32768, 67, -24,-32768,-32768,-32768,-32768,-32768,-32768,
- -32768, 125, 125, 217, 217, 217, 182, 275, 302, 328,
- 353, 377, 399, 399, 417, 417, 417, 417, 433, 433,
- 447, 447, 51, 51, 51, 456,-32768,-32768, 12, 125,
- 57, 17, 456, 456, 125,-32768, 217, -16, 247, 125,
- -32768, 217, 88, 93,-32768
- };
-
- static const short yypgoto[] = {-32768,
- 1, -7,-32768,-32768,-32768,-32768, 44,-32768, 129
- };
-
-
- #define YYLAST 507
-
-
- static const short yytable[] = { 26,
- 20, 44, 120, 27, 28, 29, 30, 31, 32, 33,
- 81, 81, 42, 81, 35, 36, 37, -67, 38, 1,
- 2, 3, 4, 5, 6, 82, 83, 112, 7, 44,
- 44, 8, 9, 10, 80, 121, 84, 85, 86, 87,
- 88, 89, 90, 91, 92, 93, 94, 95, 96, 97,
- 98, 99, 100, 101, 102, 103, 104, 105, 106, 14,
- 15, 116, 43, 73, 16, 17, -68, 18, 74, 19,
- -57, 109, 75, 5, 113, 114, 1, 2, 3, 4,
- 34, 6, 35, 36, 37, 7, 38, 124, 8, 9,
- 10, 66, 125, 67, 68, 69, 70, 71, 0, 0,
- 11, 72, 117, 0, 113, 0, 0, 119, 0, 0,
- 12, 13, 122, 0, 0, 0, 14, 15, 0, 0,
- 0, 16, 17, 0, 18, 0, 19, 1, 2, 3,
- 4, 5, 6, 0, 0, 0, 7, 0, 0, 8,
- 9, 10, 0, 0, 0, 1, 2, 3, 4, 5,
- 6, 11, 0, 0, 7, 0, 0, 8, 9, 10,
- 0, 12, 13, 76, 77, 78, 79, 14, 15, 11,
- 0, 0, 16, 17, 0, 18, 0, 19, 0, 12,
- 13, 0, 0, 0, 0, 14, 15, 0, 0, 0,
- 16, 17, 0, 25, 0, 19, 0, 107, 108, 45,
- 0, 111, 46, 47, 48, 49, 50, 51, 52, 53,
- 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
- 64, 65, 66, 0, 67, 68, 69, 70, 71, 0,
- 0, 0, 72, 0, 45, 0, 115, 46, 47, 48,
- 49, 50, 51, 52, 53, 54, 55, 56, 57, 58,
- 59, 60, 61, 62, 63, 64, 65, 66, 0, 67,
- 68, 69, 70, 71, 0, 0, 0, 72, 47, 48,
- 49, 50, 51, 52, 53, 54, 55, 56, 57, 58,
- 59, 60, 61, 62, 63, 64, 65, 66, 0, 67,
- 68, 69, 70, 71, 0, 0, 0, 72, 49, 50,
- 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
- 61, 62, 63, 64, 65, 66, 0, 67, 68, 69,
- 70, 71, 0, 0, 0, 72, 50, 51, 52, 53,
- 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
- 64, 65, 66, 0, 67, 68, 69, 70, 71, 0,
- 0, 0, 72, 51, 52, 53, 54, 55, 56, 57,
- 58, 59, 60, 61, 62, 63, 64, 65, 66, 0,
- 67, 68, 69, 70, 71, 0, 0, 0, 72, 52,
- 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
- 63, 64, 65, 66, 0, 67, 68, 69, 70, 71,
- 0, 0, 0, 72, 53, 54, 55, 56, 57, 58,
- 59, 60, 61, 62, 63, 64, 65, 66, 0, 67,
- 68, 69, 70, 71, 0, 0, 0, 72, 55, 56,
- 57, 58, 59, 60, 61, 62, 63, 64, 65, 66,
- 0, 67, 68, 69, 70, 71, 0, 0, 0, 72,
- 59, 60, 61, 62, 63, 64, 65, 66, 0, 67,
- 68, 69, 70, 71, 0, 0, 0, 72, 61, 62,
- 63, 64, 65, 66, 0, 67, 68, 69, 70, 71,
- 0, 0, 0, 72, 63, 64, 65, 66, 0, 67,
- 68, 69, 70, 71, 0, 0, 0, 72, 67, 68,
- 69, 70, 71, 0, 0, 0, 72
- };
-
- static const short yycheck[] = { 7,
- 0, 19, 19, 11, 12, 13, 14, 15, 16, 17,
- 38, 38, 7, 38, 9, 10, 11, 14, 13, 3,
- 4, 5, 6, 7, 8, 52, 54, 52, 12, 19,
- 19, 15, 16, 17, 52, 52, 44, 45, 46, 47,
- 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
- 58, 59, 60, 61, 62, 63, 64, 65, 66, 43,
- 44, 50, 19, 14, 48, 49, 14, 51, 25, 53,
- 14, 71, 6, 7, 82, 83, 3, 4, 5, 6,
- 7, 8, 9, 10, 11, 12, 13, 0, 15, 16,
- 17, 41, 0, 43, 44, 45, 46, 47, -1, -1,
- 27, 51, 110, -1, 112, -1, -1, 115, -1, -1,
- 37, 38, 120, -1, -1, -1, 43, 44, -1, -1,
- -1, 48, 49, -1, 51, -1, 53, 3, 4, 5,
- 6, 7, 8, -1, -1, -1, 12, -1, -1, 15,
- 16, 17, -1, -1, -1, 3, 4, 5, 6, 7,
- 8, 27, -1, -1, 12, -1, -1, 15, 16, 17,
- -1, 37, 38, 35, 36, 37, 38, 43, 44, 27,
- -1, -1, 48, 49, -1, 51, -1, 53, -1, 37,
- 38, -1, -1, -1, -1, 43, 44, -1, -1, -1,
- 48, 49, -1, 51, -1, 53, -1, 69, 70, 18,
- -1, 73, 21, 22, 23, 24, 25, 26, 27, 28,
- 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
- 39, 40, 41, -1, 43, 44, 45, 46, 47, -1,
- -1, -1, 51, -1, 18, -1, 55, 21, 22, 23,
- 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
- 34, 35, 36, 37, 38, 39, 40, 41, -1, 43,
- 44, 45, 46, 47, -1, -1, -1, 51, 22, 23,
- 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
- 34, 35, 36, 37, 38, 39, 40, 41, -1, 43,
- 44, 45, 46, 47, -1, -1, -1, 51, 24, 25,
- 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
- 36, 37, 38, 39, 40, 41, -1, 43, 44, 45,
- 46, 47, -1, -1, -1, 51, 25, 26, 27, 28,
- 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
- 39, 40, 41, -1, 43, 44, 45, 46, 47, -1,
- -1, -1, 51, 26, 27, 28, 29, 30, 31, 32,
- 33, 34, 35, 36, 37, 38, 39, 40, 41, -1,
- 43, 44, 45, 46, 47, -1, -1, -1, 51, 27,
- 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
- 38, 39, 40, 41, -1, 43, 44, 45, 46, 47,
- -1, -1, -1, 51, 28, 29, 30, 31, 32, 33,
- 34, 35, 36, 37, 38, 39, 40, 41, -1, 43,
- 44, 45, 46, 47, -1, -1, -1, 51, 30, 31,
- 32, 33, 34, 35, 36, 37, 38, 39, 40, 41,
- -1, 43, 44, 45, 46, 47, -1, -1, -1, 51,
- 34, 35, 36, 37, 38, 39, 40, 41, -1, 43,
- 44, 45, 46, 47, -1, -1, -1, 51, 36, 37,
- 38, 39, 40, 41, -1, 43, 44, 45, 46, 47,
- -1, -1, -1, 51, 38, 39, 40, 41, -1, 43,
- 44, 45, 46, 47, -1, -1, -1, 51, 43, 44,
- 45, 46, 47, -1, -1, -1, 51
- };
- /* -*-C-*- Note some compilers choke on comments on `#line' lines. */
- #line 3 "/net/acae127/home/bammi/lib/bison.simple"
-
- /* Skeleton output parser for bison,
- Copyright (C) 1984, 1989, 1990 Bob Corbett and Richard Stallman
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- #ifndef alloca
- #ifdef __GNUC__
- #define alloca __builtin_alloca
- #else /* Not GNU C. */
- #if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__)
- #include <alloca.h>
- #else /* Not sparc */
- #ifdef MSDOS
- #include <malloc.h>
- #endif /* MSDOS */
- #endif /* Not sparc. */
- #endif /* Not GNU C. */
- #endif /* alloca not defined. */
-
- /* This is the parser code that is written into each bison parser
- when the %semantic_parser declaration is not specified in the grammar.
- It was written by Richard Stallman by simplifying the hairy parser
- used when %semantic_parser is specified. */
-
- /* Note: there must be only one dollar sign in this file.
- It is replaced by the list of actions, each action
- as one case of the switch. */
-
- #define yyerrok (yyerrstatus = 0)
- #define yyclearin (yychar = YYEMPTY)
- #define YYEMPTY -2
- #define YYEOF 0
- #define YYACCEPT return(0)
- #define YYABORT return(1)
- #define YYERROR goto yyerrlab1
- /* Like YYERROR except do call yyerror.
- This remains here temporarily to ease the
- transition to the new meaning of YYERROR, for GCC.
- Once GCC version 2 has supplanted version 1, this can go. */
- #define YYFAIL goto yyerrlab
- #define YYRECOVERING() (!!yyerrstatus)
- #define YYBACKUP(token, value) \
- do \
- if (yychar == YYEMPTY && yylen == 1) \
- { yychar = (token), yylval = (value); \
- yychar1 = YYTRANSLATE (yychar); \
- YYPOPSTACK; \
- goto yybackup; \
- } \
- else \
- { yyerror ("syntax error: cannot back up"); YYERROR; } \
- while (0)
-
- #define YYTERROR 1
- #define YYERRCODE 256
-
- #ifndef YYPURE
- #define YYLEX yylex()
- #endif
-
- #ifdef YYPURE
- #ifdef YYLSP_NEEDED
- #define YYLEX yylex(&yylval, &yylloc)
- #else
- #define YYLEX yylex(&yylval)
- #endif
- #endif
-
- /* If nonreentrant, generate the variables here */
-
- #ifndef YYPURE
-
- int yychar; /* the lookahead symbol */
- YYSTYPE yylval; /* the semantic value of the */
- /* lookahead symbol */
-
- #ifdef YYLSP_NEEDED
- YYLTYPE yylloc; /* location data for the lookahead */
- /* symbol */
- #endif
-
- int yynerrs; /* number of parse errors so far */
- #endif /* not YYPURE */
-
- #if YYDEBUG != 0
- int yydebug; /* nonzero means print parse trace */
- /* Since this is uninitialized, it does not stop multiple parsers
- from coexisting. */
- #endif
-
- /* YYINITDEPTH indicates the initial size of the parser's stacks */
-
- #ifndef YYINITDEPTH
- #define YYINITDEPTH 200
- #endif
-
- /* YYMAXDEPTH is the maximum size the stacks can grow to
- (effective only if the built-in stack extension method is used). */
-
- #if YYMAXDEPTH == 0
- #undef YYMAXDEPTH
- #endif
-
- #ifndef YYMAXDEPTH
- #define YYMAXDEPTH 10000
- #endif
-
- #ifndef __cplusplus
-
- /* This is the most reliable way to avoid incompatibilities
- in available built-in functions on various systems. */
- static void
- __yy_bcopy (from, to, count)
- char *from;
- char *to;
- int count;
- {
- register char *f = from;
- register char *t = to;
- register int i = count;
-
- while (i-- > 0)
- *t++ = *f++;
- }
-
- #else /* __cplusplus */
-
- /* This is the most reliable way to avoid incompatibilities
- in available built-in functions on various systems. */
- static void
- __yy_bcopy (char *from, char *to, int count)
- {
- register char *f = from;
- register char *t = to;
- register int i = count;
-
- while (i-- > 0)
- *t++ = *f++;
- }
-
- #endif
-
- #line 160 "/net/acae127/home/bammi/lib/bison.simple"
- int
- yyparse()
- {
- register int yystate;
- register int yyn;
- register short *yyssp;
- register YYSTYPE *yyvsp;
- int yyerrstatus; /* number of tokens to shift before error messages enabled */
- int yychar1; /* lookahead token as an internal (translated) token number */
-
- short yyssa[YYINITDEPTH]; /* the state stack */
- YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
-
- short *yyss = yyssa; /* refer to the stacks thru separate pointers */
- YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
-
- #ifdef YYLSP_NEEDED
- YYLTYPE *yyls = yylsa;
- YYLTYPE *yylsp;
- YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
-
- #define YYPOPSTACK (yyvsp--, yysp--, yylsp--)
- #else
- #define YYPOPSTACK (yyvsp--, yysp--)
- #endif
-
- int yystacksize = YYINITDEPTH;
-
- #ifdef YYPURE
- int yychar;
- YYSTYPE yylval;
- int yynerrs;
- #ifdef YYLSP_NEEDED
- YYLTYPE yylloc;
- #endif
- #endif
-
- YYSTYPE yyval; /* the variable used to return */
- /* semantic values from the action */
- /* routines */
-
- int yylen;
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Starting parse\n");
- #endif
-
- yystate = 0;
- yyerrstatus = 0;
- yynerrs = 0;
- yychar = YYEMPTY; /* Cause a token to be read. */
-
- /* Initialize stack pointers.
- Waste one element of value and location stack
- so that they stay on the same level as the state stack. */
-
- yyssp = yyss - 1;
- yyvsp = yyvs;
- #ifdef YYLSP_NEEDED
- yylsp = yyls;
- #endif
-
- /* Push a new state, which is found in yystate . */
- /* In all cases, when you get here, the value and location stacks
- have just been pushed. so pushing a state here evens the stacks. */
- yynewstate:
-
- *++yyssp = yystate;
-
- if (yyssp >= yyss + yystacksize - 1)
- {
- /* Give user a chance to reallocate the stack */
- /* Use copies of these so that the &'s don't force the real ones into memory. */
- YYSTYPE *yyvs1 = yyvs;
- short *yyss1 = yyss;
- #ifdef YYLSP_NEEDED
- YYLTYPE *yyls1 = yyls;
- #endif
-
- /* Get the current used size of the three stacks, in elements. */
- int size = yyssp - yyss + 1;
-
- #ifdef yyoverflow
- /* Each stack pointer address is followed by the size of
- the data in use in that stack, in bytes. */
- yyoverflow("parser stack overflow",
- &yyss1, size * sizeof (*yyssp),
- &yyvs1, size * sizeof (*yyvsp),
- #ifdef YYLSP_NEEDED
- &yyls1, size * sizeof (*yylsp),
- #endif
- &yystacksize);
-
- yyss = yyss1; yyvs = yyvs1;
- #ifdef YYLSP_NEEDED
- yyls = yyls1;
- #endif
- #else /* no yyoverflow */
- /* Extend the stack our own way. */
- if (yystacksize >= YYMAXDEPTH)
- {
- yyerror("parser stack overflow");
- return 2;
- }
- yystacksize *= 2;
- if (yystacksize > YYMAXDEPTH)
- yystacksize = YYMAXDEPTH;
- yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
- __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
- yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
- __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
- #ifdef YYLSP_NEEDED
- yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
- __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
- #endif
- #endif /* no yyoverflow */
-
- yyssp = yyss + size - 1;
- yyvsp = yyvs + size - 1;
- #ifdef YYLSP_NEEDED
- yylsp = yyls + size - 1;
- #endif
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Stack size increased to %d\n", yystacksize);
- #endif
-
- if (yyssp >= yyss + yystacksize - 1)
- YYABORT;
- }
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Entering state %d\n", yystate);
- #endif
-
- yybackup:
-
- /* Do appropriate processing given the current state. */
- /* Read a lookahead token if we need one and don't already have one. */
- /* yyresume: */
-
- /* First try to decide what to do without reference to lookahead token. */
-
- yyn = yypact[yystate];
- if (yyn == YYFLAG)
- goto yydefault;
-
- /* Not known => get a lookahead token if don't already have one. */
-
- /* yychar is either YYEMPTY or YYEOF
- or a valid token in external form. */
-
- if (yychar == YYEMPTY)
- {
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Reading a token: ");
- #endif
- yychar = YYLEX;
- }
-
- /* Convert token to internal form (in yychar1) for indexing tables with */
-
- if (yychar <= 0) /* This means end of input. */
- {
- yychar1 = 0;
- yychar = YYEOF; /* Don't call YYLEX any more */
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Now at end of input.\n");
- #endif
- }
- else
- {
- yychar1 = YYTRANSLATE(yychar);
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Next token is %d (%s)\n", yychar, yytname[yychar1]);
- #endif
- }
-
- yyn += yychar1;
- if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
- goto yydefault;
-
- yyn = yytable[yyn];
-
- /* yyn is what to do for this token type in this state.
- Negative => reduce, -yyn is rule number.
- Positive => shift, yyn is new state.
- New state is final state => don't bother to shift,
- just return success.
- 0, or most negative number => error. */
-
- if (yyn < 0)
- {
- if (yyn == YYFLAG)
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
- }
- else if (yyn == 0)
- goto yyerrlab;
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
- /* Shift the lookahead token. */
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
- #endif
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != YYEOF)
- yychar = YYEMPTY;
-
- *++yyvsp = yylval;
- #ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
- #endif
-
- /* count tokens shifted since error; after three, turn off error status. */
- if (yyerrstatus) yyerrstatus--;
-
- yystate = yyn;
- goto yynewstate;
-
- /* Do the default action for the current state. */
- yydefault:
-
- yyn = yydefact[yystate];
- if (yyn == 0)
- goto yyerrlab;
-
- /* Do a reduction. yyn is the number of a rule to reduce with. */
- yyreduce:
- yylen = yyr2[yyn];
- yyval = yyvsp[1-yylen]; /* implement default value of the action */
-
- #if YYDEBUG != 0
- if (yydebug)
- {
- int i;
-
- fprintf (stderr, "Reducing via rule %d (line %d), ",
- yyn, yyrline[yyn]);
-
- /* Print the symboles being reduced, and their result. */
- for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
- fprintf (stderr, "%s ", yytname[yyrhs[i]]);
- fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
- }
- #endif
-
-
- switch (yyn) {
-
- case 3:
- #line 157 "expread.y"
- { write_exp_elt (BINOP_COMMA); ;
- break;}
- case 4:
- #line 162 "expread.y"
- { write_exp_elt (UNOP_IND); ;
- break;}
- case 5:
- #line 165 "expread.y"
- { write_exp_elt (UNOP_ADDR); ;
- break;}
- case 6:
- #line 168 "expread.y"
- { write_exp_elt (UNOP_NEG); ;
- break;}
- case 7:
- #line 172 "expread.y"
- { write_exp_elt (UNOP_ZEROP); ;
- break;}
- case 8:
- #line 176 "expread.y"
- { write_exp_elt (UNOP_LOGNOT); ;
- break;}
- case 9:
- #line 180 "expread.y"
- { write_exp_elt (UNOP_PREINCREMENT); ;
- break;}
- case 10:
- #line 184 "expread.y"
- { write_exp_elt (UNOP_PREDECREMENT); ;
- break;}
- case 11:
- #line 188 "expread.y"
- { write_exp_elt (UNOP_POSTINCREMENT); ;
- break;}
- case 12:
- #line 192 "expread.y"
- { write_exp_elt (UNOP_POSTDECREMENT); ;
- break;}
- case 13:
- #line 196 "expread.y"
- { write_exp_elt (UNOP_SIZEOF); ;
- break;}
- case 14:
- #line 200 "expread.y"
- { write_exp_elt (STRUCTOP_PTR);
- write_exp_string (yyvsp[0].sval);
- write_exp_elt (STRUCTOP_PTR); ;
- break;}
- case 15:
- #line 206 "expread.y"
- { write_exp_elt (STRUCTOP_STRUCT);
- write_exp_string (yyvsp[0].sval);
- write_exp_elt (STRUCTOP_STRUCT); ;
- break;}
- case 16:
- #line 212 "expread.y"
- { write_exp_elt (BINOP_SUBSCRIPT); ;
- break;}
- case 17:
- #line 218 "expread.y"
- { start_arglist (); ;
- break;}
- case 18:
- #line 220 "expread.y"
- { write_exp_elt (OP_FUNCALL);
- write_exp_elt (end_arglist ());
- write_exp_elt (OP_FUNCALL); ;
- break;}
- case 20:
- #line 229 "expread.y"
- { arglist_len = 1; ;
- break;}
- case 21:
- #line 233 "expread.y"
- { arglist_len++; ;
- break;}
- case 22:
- #line 237 "expread.y"
- { write_exp_elt (UNOP_MEMVAL);
- write_exp_elt (yyvsp[-2].tval);
- write_exp_elt (UNOP_MEMVAL); ;
- break;}
- case 23:
- #line 243 "expread.y"
- { write_exp_elt (UNOP_CAST);
- write_exp_elt (yyvsp[-2].tval);
- write_exp_elt (UNOP_CAST); ;
- break;}
- case 24:
- #line 249 "expread.y"
- { ;
- break;}
- case 25:
- #line 255 "expread.y"
- { write_exp_elt (BINOP_REPEAT); ;
- break;}
- case 26:
- #line 259 "expread.y"
- { write_exp_elt (BINOP_MUL); ;
- break;}
- case 27:
- #line 263 "expread.y"
- { write_exp_elt (BINOP_DIV); ;
- break;}
- case 28:
- #line 267 "expread.y"
- { write_exp_elt (BINOP_REM); ;
- break;}
- case 29:
- #line 271 "expread.y"
- { write_exp_elt (BINOP_ADD); ;
- break;}
- case 30:
- #line 275 "expread.y"
- { write_exp_elt (BINOP_SUB); ;
- break;}
- case 31:
- #line 279 "expread.y"
- { write_exp_elt (BINOP_LSH); ;
- break;}
- case 32:
- #line 283 "expread.y"
- { write_exp_elt (BINOP_RSH); ;
- break;}
- case 33:
- #line 287 "expread.y"
- { write_exp_elt (BINOP_EQUAL); ;
- break;}
- case 34:
- #line 291 "expread.y"
- { write_exp_elt (BINOP_NOTEQUAL); ;
- break;}
- case 35:
- #line 295 "expread.y"
- { write_exp_elt (BINOP_LEQ); ;
- break;}
- case 36:
- #line 299 "expread.y"
- { write_exp_elt (BINOP_GEQ); ;
- break;}
- case 37:
- #line 303 "expread.y"
- { write_exp_elt (BINOP_LESS); ;
- break;}
- case 38:
- #line 307 "expread.y"
- { write_exp_elt (BINOP_GTR); ;
- break;}
- case 39:
- #line 311 "expread.y"
- { write_exp_elt (BINOP_LOGAND); ;
- break;}
- case 40:
- #line 315 "expread.y"
- { write_exp_elt (BINOP_LOGXOR); ;
- break;}
- case 41:
- #line 319 "expread.y"
- { write_exp_elt (BINOP_LOGIOR); ;
- break;}
- case 42:
- #line 323 "expread.y"
- { write_exp_elt (BINOP_AND); ;
- break;}
- case 43:
- #line 327 "expread.y"
- { write_exp_elt (BINOP_OR); ;
- break;}
- case 44:
- #line 331 "expread.y"
- { write_exp_elt (TERNOP_COND); ;
- break;}
- case 45:
- #line 335 "expread.y"
- { write_exp_elt (BINOP_ASSIGN); ;
- break;}
- case 46:
- #line 339 "expread.y"
- { write_exp_elt (BINOP_ASSIGN_MODIFY);
- write_exp_elt (yyvsp[-1].opcode);
- write_exp_elt (BINOP_ASSIGN_MODIFY); ;
- break;}
- case 47:
- #line 345 "expread.y"
- { write_exp_elt (OP_LONG);
- #if 0
- if(gcc_mshort)
- write_exp_elt (builtin_type_short);
- else
- #endif
- write_exp_elt (builtin_type_int);
- write_exp_elt (yyvsp[0].lval);
- write_exp_elt (OP_LONG); ;
- break;}
- case 48:
- #line 357 "expread.y"
- { write_exp_elt (OP_LONG);
- write_exp_elt (builtin_type_char);
- write_exp_elt (yyvsp[0].lval);
- write_exp_elt (OP_LONG); ;
- break;}
- case 49:
- #line 364 "expread.y"
- { write_exp_elt (OP_DOUBLE);
- write_exp_elt (builtin_type_double);
- write_exp_elt (yyvsp[0].dval);
- write_exp_elt (OP_DOUBLE); ;
- break;}
- case 51:
- #line 374 "expread.y"
- { write_exp_elt (OP_LAST);
- write_exp_elt (yyvsp[0].lval);
- write_exp_elt (OP_LAST); ;
- break;}
- case 52:
- #line 380 "expread.y"
- { write_exp_elt (OP_REGISTER);
- write_exp_elt (yyvsp[0].lval);
- write_exp_elt (OP_REGISTER); ;
- break;}
- case 53:
- #line 386 "expread.y"
- { write_exp_elt (OP_INTERNALVAR);
- write_exp_elt (yyvsp[0].ivar);
- write_exp_elt (OP_INTERNALVAR); ;
- break;}
- case 54:
- #line 392 "expread.y"
- { write_exp_elt (OP_LONG);
- write_exp_elt (builtin_type_long);
- write_exp_elt ((long) TYPE_LENGTH (yyvsp[-1].tval));
- write_exp_elt (OP_LONG); ;
- break;}
- case 55:
- #line 399 "expread.y"
- { write_exp_elt (OP_STRING);
- write_exp_string (yyvsp[0].sval);
- write_exp_elt (OP_STRING); ;
- break;}
- case 56:
- #line 405 "expread.y"
- { struct symtab *tem = lookup_symtab (copy_name (yyvsp[0].sval));
- struct symbol *sym;
-
- if (tem)
- yyval.bval = BLOCKVECTOR_BLOCK (BLOCKVECTOR (tem), 1);
- else
- {
- sym = lookup_symbol (copy_name (yyvsp[0].sval),
- expression_context_block,
- VAR_NAMESPACE);
- if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
- yyval.bval = SYMBOL_BLOCK_VALUE (sym);
- else
- error ("No file or function \"%s\".",
- copy_name (yyvsp[0].sval));
- };
- break;}
- case 57:
- #line 424 "expread.y"
- { struct symbol *tem
- = lookup_symbol (copy_name (yyvsp[0].sval), yyvsp[-2].bval, VAR_NAMESPACE);
- if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
- error ("No function \"%s\" in specified context.",
- copy_name (yyvsp[0].sval));
- yyval.bval = SYMBOL_BLOCK_VALUE (tem); ;
- break;}
- case 58:
- #line 433 "expread.y"
- { struct symbol *sym;
- sym = lookup_symbol (copy_name (yyvsp[0].sval), yyvsp[-2].bval, VAR_NAMESPACE);
- if (sym == 0)
- error ("No symbol \"%s\" in specified context.",
- copy_name (yyvsp[0].sval));
- write_exp_elt (OP_VAR_VALUE);
- write_exp_elt (sym);
- write_exp_elt (OP_VAR_VALUE); ;
- break;}
- case 59:
- #line 444 "expread.y"
- { struct symbol *sym;
- sym = lookup_symbol (copy_name (yyvsp[0].sval),
- expression_context_block,
- VAR_NAMESPACE);
- if (sym)
- {
- write_exp_elt (OP_VAR_VALUE);
- write_exp_elt (sym);
- write_exp_elt (OP_VAR_VALUE);
- }
- else
- {
- register char *arg = copy_name (yyvsp[0].sval);
- register int i;
- for (i = 0; i < misc_function_count; i++)
- if (!strcmp (misc_function_vector[i].name, arg))
- break;
-
- if (i < misc_function_count)
- {
- write_exp_elt (OP_LONG);
- write_exp_elt (builtin_type_int);
- write_exp_elt (misc_function_vector[i].address);
- write_exp_elt (OP_LONG);
- write_exp_elt (UNOP_MEMVAL);
- /* write_exp_elt (builtin_type_char); */
- if(misc_function_vector[i].address <= end_of_text_addr)
- write_exp_elt
- (lookup_function_type(builtin_type_int));
- else
- write_exp_elt(builtin_type_int);
- write_exp_elt (UNOP_MEMVAL);
- }
- else
- if (symtab_list == 0)
- error ("No symbol table is loaded. Use the \"symbol-file\" command.");
- else
- error ("No symbol \"%s\" in current context.",
- copy_name (yyvsp[0].sval));
- }
- ;
- break;}
- case 61:
- #line 489 "expread.y"
- { yyval.tval = lookup_pointer_type (yyvsp[-1].tval); ;
- break;}
- case 62:
- #line 494 "expread.y"
- { yyval.tval = lookup_typename (copy_name (yyvsp[0].sval),
- expression_context_block, 0); ;
- break;}
- case 63:
- #line 497 "expread.y"
- { yyval.tval = lookup_struct (copy_name (yyvsp[0].sval),
- expression_context_block); ;
- break;}
- case 64:
- #line 500 "expread.y"
- { yyval.tval = lookup_union (copy_name (yyvsp[0].sval),
- expression_context_block); ;
- break;}
- case 65:
- #line 503 "expread.y"
- { yyval.tval = lookup_enum (copy_name (yyvsp[0].sval),
- expression_context_block); ;
- break;}
- case 66:
- #line 506 "expread.y"
- { yyval.tval = lookup_unsigned_typename (copy_name (yyvsp[0].sval)); ;
- break;}
- }
- /* the action file gets copied in in place of this dollarsign */
- #line 423 "/net/acae127/home/bammi/lib/bison.simple"
-
- yyvsp -= yylen;
- yyssp -= yylen;
- #ifdef YYLSP_NEEDED
- yylsp -= yylen;
- #endif
-
- #if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
- #endif
-
- *++yyvsp = yyval;
-
- #ifdef YYLSP_NEEDED
- yylsp++;
- if (yylen == 0)
- {
- yylsp->first_line = yylloc.first_line;
- yylsp->first_column = yylloc.first_column;
- yylsp->last_line = (yylsp-1)->last_line;
- yylsp->last_column = (yylsp-1)->last_column;
- yylsp->text = 0;
- }
- else
- {
- yylsp->last_line = (yylsp+yylen-1)->last_line;
- yylsp->last_column = (yylsp+yylen-1)->last_column;
- }
- #endif
-
- /* Now "shift" the result of the reduction.
- Determine what state that goes to,
- based on the state we popped back to
- and the rule number reduced by. */
-
- yyn = yyr1[yyn];
-
- yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
- if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
- yystate = yytable[yystate];
- else
- yystate = yydefgoto[yyn - YYNTBASE];
-
- goto yynewstate;
-
- yyerrlab: /* here on detecting error */
-
- if (! yyerrstatus)
- /* If not already recovering from an error, report this error. */
- {
- ++yynerrs;
-
- #ifdef YYERROR_VERBOSE
- yyn = yypact[yystate];
-
- if (yyn > YYFLAG && yyn < YYLAST)
- {
- int size = 0;
- char *msg;
- int x, count;
-
- count = 0;
- for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
- if (yycheck[x + yyn] == x)
- size += strlen(yytname[x]) + 15, count++;
- msg = (char *) xmalloc(size + 15);
- strcpy(msg, "parse error");
-
- if (count < 5)
- {
- count = 0;
- for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
- if (yycheck[x + yyn] == x)
- {
- strcat(msg, count == 0 ? ", expecting `" : " or `");
- strcat(msg, yytname[x]);
- strcat(msg, "'");
- count++;
- }
- }
- yyerror(msg);
- free(msg);
- }
- else
- #endif /* YYERROR_VERBOSE */
- yyerror("parse error");
- }
-
- yyerrlab1: /* here on error raised explicitly by an action */
-
- if (yyerrstatus == 3)
- {
- /* if just tried and failed to reuse lookahead token after an error, discard it. */
-
- /* return failure if at end of input */
- if (yychar == YYEOF)
- YYABORT;
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
- #endif
-
- yychar = YYEMPTY;
- }
-
- /* Else will try to reuse lookahead token
- after shifting the error token. */
-
- yyerrstatus = 3; /* Each real token shifted decrements this */
-
- goto yyerrhandle;
-
- yyerrdefault: /* current state does not do anything special for the error token. */
-
- #if 0
- /* This is wrong; only states that explicitly want error tokens
- should shift them. */
- yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
- if (yyn) goto yydefault;
- #endif
-
- yyerrpop: /* pop the current state because it cannot handle the error token */
-
- if (yyssp == yyss) YYABORT;
- yyvsp--;
- yystate = *--yyssp;
- #ifdef YYLSP_NEEDED
- yylsp--;
- #endif
-
- #if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "Error: state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
- #endif
-
- yyerrhandle:
-
- yyn = yypact[yystate];
- if (yyn == YYFLAG)
- goto yyerrdefault;
-
- yyn += YYTERROR;
- if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
- goto yyerrdefault;
-
- yyn = yytable[yyn];
- if (yyn < 0)
- {
- if (yyn == YYFLAG)
- goto yyerrpop;
- yyn = -yyn;
- goto yyreduce;
- }
- else if (yyn == 0)
- goto yyerrpop;
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
- #if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Shifting error token, ");
- #endif
-
- *++yyvsp = yylval;
- #ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
- #endif
-
- yystate = yyn;
- goto yynewstate;
- }
- #line 512 "expread.y"
-
-
- /* Begin counting arguments for a function call,
- saving the data about any containing call. */
-
- static void
- start_arglist ()
- {
- register struct funcall *new = (struct funcall *) xmalloc (sizeof (struct funcall));
-
- new->next = funcall_chain;
- new->arglist_len = arglist_len;
- arglist_len = 0;
- funcall_chain = new;
- }
-
- /* Return the number of arguments in a function call just terminated,
- and restore the data for the containing function call. */
-
- static int
- end_arglist ()
- {
- register int val = arglist_len;
- register struct funcall *call = funcall_chain;
- funcall_chain = call->next;
- arglist_len = call->arglist_len;
- free (call);
- return val;
- }
-
- /* Free everything in the funcall chain.
- Used when there is an error inside parsing. */
-
- static void
- free_funcalls ()
- {
- register struct funcall *call, *next;
-
- for (call = funcall_chain; call; call = next)
- {
- next = call->next;
- free (call);
- }
- }
-
- /* This page contains the functions for adding data to the struct expression
- being constructed. */
-
- /* Add one element to the end of the expression. */
-
- static void
- write_exp_elt (expelt)
- union exp_element expelt;
- {
- if (expout_ptr >= expout_size)
- {
- expout_size *= 2;
- expout = (struct expression *) xrealloc (expout,
- sizeof (struct expression)
- + expout_size * sizeof (union exp_element));
- }
- expout->elts[expout_ptr++] = expelt;
- }
-
- /* Add a string constant to the end of the expression.
- Follow it by its length in bytes, as a separate exp_element. */
-
- static void
- write_exp_string (str)
- struct stoken str;
- {
- register int len = str.length;
- register int lenelt
- = (len + sizeof (union exp_element)) / sizeof (union exp_element);
-
- expout_ptr += lenelt;
-
- if (expout_ptr >= expout_size)
- {
- expout_size = max (expout_size * 2, expout_ptr + 10);
- expout = (struct expression *) xrealloc (expout,
- sizeof (struct expression)
- + expout_size * sizeof (union exp_element));
- }
- bcopy (str.ptr, (char *) &expout->elts[expout_ptr - lenelt], len);
- ((char *) &expout->elts[expout_ptr - lenelt])[len] = 0;
- write_exp_elt (len);
- }
-
- /* During parsing of a C expression, the pointer to the next character
- is in this variable. */
-
- static char *lexptr;
-
- /* Tokens that refer to names do so with explicit pointer and length,
- so they can share the storage that lexptr is parsing.
-
- When it is necessary to pass a name to a function that expects
- a null-terminated string, the substring is copied out
- into a block of storage that namecopy points to.
-
- namecopy is allocated once, guaranteed big enough, for each parsing. */
-
- static char *namecopy;
-
- /* Current depth in parentheses within the expression. */
-
- static int paren_depth;
-
- /* Nonzero means stop parsing on first comma (if not within parentheses). */
-
- static int comma_terminates;
-
- /* Take care of parsing a number (anything that starts with a digit).
- Set yylval and return the token type; update lexptr.
- LEN is the number of characters in it. */
-
- /*** Needs some error checking for the float case ***/
-
- static int
- parse_number (olen)
- int olen;
- {
- register char *p = lexptr;
- register long n = 0;
- register int c;
- register int base = 10;
- register int len = olen;
- char *err_copy;
-
- extern double atof ();
-
- for (c = 0; c < len; c++)
- if (p[c] == '.')
- {
- /* It's a float since it contains a point. */
- yylval.dval = atof (p);
- lexptr += len;
- return FLOAT;
- }
-
- if (len >= 3 && (!strncmp (p, "0x", 2) || !strncmp (p, "0X", 2)))
- {
- p += 2;
- base = 16;
- len -= 2;
- }
- else if (*p == '0')
- base = 8;
-
- while (len-- > 0)
- {
- c = *p++;
- n *= base;
- if (c >= '0' && c <= '9')
- n += c - '0';
- else
- {
- if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
- if (base == 16 && c >= 'a' && c <= 'f')
- n += c - 'a' + 10;
- else if (len == 0 && c == 'l')
- ;
- else
- {
- err_copy = (char *) alloca (olen + 1);
- bcopy (lexptr, err_copy, olen);
- err_copy[olen] = 0;
- error ("Invalid number \"%s\".", err_copy);
- }
- }
- }
-
- lexptr = p;
- yylval.lval = n;
- return INT;
- }
-
- struct token
- {
- char *operator;
- int token;
- enum exp_opcode opcode;
- };
-
- static struct token tokentab3[] =
- {
- {">>=", ASSIGN_MODIFY, BINOP_RSH},
- {"<<=", ASSIGN_MODIFY, BINOP_LSH}
- };
-
- static struct token tokentab2[] =
- {
- {"+=", ASSIGN_MODIFY, BINOP_ADD},
- {"-=", ASSIGN_MODIFY, BINOP_SUB},
- {"*=", ASSIGN_MODIFY, BINOP_MUL},
- {"/=", ASSIGN_MODIFY, BINOP_DIV},
- {"%=", ASSIGN_MODIFY, BINOP_REM},
- {"|=", ASSIGN_MODIFY, BINOP_LOGIOR},
- {"&=", ASSIGN_MODIFY, BINOP_LOGAND},
- {"^=", ASSIGN_MODIFY, BINOP_LOGXOR},
- {"++", INCREMENT, BINOP_END},
- {"--", DECREMENT, BINOP_END},
- {"->", ARROW, BINOP_END},
- {"&&", AND, BINOP_END},
- {"||", OR, BINOP_END},
- {"::", COLONCOLON, BINOP_END},
- {"<<", LSH, BINOP_END},
- {">>", RSH, BINOP_END},
- {"==", EQUAL, BINOP_END},
- {"!=", NOTEQUAL, BINOP_END},
- {"<=", LEQ, BINOP_END},
- {">=", GEQ, BINOP_END}
- };
-
- /* Read one token, getting characters through lexptr. */
-
- static int
- yylex ()
- {
- register int c;
- register int namelen;
- register int i;
- register char *tokstart;
-
- retry:
-
- tokstart = lexptr;
- /* See if it is a special token of length 3. */
- for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
- if (!strncmp (tokstart, tokentab3[i].operator, 3))
- {
- lexptr += 3;
- yylval.opcode = tokentab3[i].opcode;
- return tokentab3[i].token;
- }
-
- /* See if it is a special token of length 2. */
- for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
- if (!strncmp (tokstart, tokentab2[i].operator, 2))
- {
- lexptr += 2;
- yylval.opcode = tokentab2[i].opcode;
- return tokentab2[i].token;
- }
-
- switch (c = *tokstart)
- {
- case 0:
- return 0;
-
- case ' ':
- case '\t':
- case '\n':
- lexptr++;
- goto retry;
-
- case '\'':
- lexptr++;
- c = *lexptr++;
- if (c == '\\')
- c = parse_escape (&lexptr);
- yylval.lval = c;
- c = *lexptr++;
- if (c != '\'')
- error ("Invalid character constant.");
- return CHAR;
-
- case '(':
- paren_depth++;
- lexptr++;
- return c;
-
- case ')':
- if (paren_depth == 0)
- return 0;
- paren_depth--;
- lexptr++;
- return c;
-
- case ',':
- if (comma_terminates && paren_depth == 0)
- return 0;
- lexptr++;
- return c;
-
- case '+':
- case '-':
- case '*':
- case '/':
- case '%':
- case '|':
- case '&':
- case '^':
- case '~':
- case '!':
- case '@':
- case '<':
- case '>':
- case '[':
- case ']':
- case '.':
- case '?':
- case ':':
- case '=':
- case '{':
- case '}':
- lexptr++;
- return c;
-
- case '"':
- for (namelen = 1; (c = tokstart[namelen]) != '"'; namelen++)
- if (c == '\\')
- {
- c = tokstart[++namelen];
- if (c >= '0' && c <= '9')
- {
- c = tokstart[++namelen];
- if (c >= '0' && c <= '9')
- c = tokstart[++namelen];
- }
- }
- yylval.sval.ptr = tokstart + 1;
- yylval.sval.length = namelen - 1;
- lexptr += namelen + 1;
- return STRING;
- }
- if (c >= '0' && c <= '9')
- {
- /* It's a number */
- for (namelen = 0;
- c = tokstart[namelen],
- (c == '_' || c == '$' || c == '.' || (c >= '0' && c <= '9')
- || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
- namelen++)
- ;
- return parse_number (namelen);
- }
-
- if (!(c == '_' || c == '$'
- || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')))
- error ("Invalid token in expression.");
-
- /* It is a name. See how long it is. */
-
- for (namelen = 0;
- c = tokstart[namelen],
- (c == '_' || c == '$' || (c >= '0' && c <= '9')
- || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
- namelen++)
- ;
-
- /* The token "if" terminates the expression and is NOT
- removed from the input stream. */
- if (namelen == 2 && tokstart[0] == 'i' && tokstart[1] == 'f')
- {
- return 0;
- }
-
- lexptr += namelen;
-
- /* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1)
- and $$digits (equivalent to $<-digits> if you could type that).
- Make token type LAST, and put the number (the digits) in yylval. */
-
- if (*tokstart == '$')
- {
- register int negate = 0;
- c = 1;
- /* Double dollar means negate the number and add -1 as well.
- Thus $$ alone means -1. */
- if (namelen >= 2 && tokstart[1] == '$')
- {
- negate = 1;
- c = 2;
- }
- if (c == namelen)
- {
- /* Just dollars (one or two) */
- yylval.lval = - negate;
- return LAST;
- }
- /* Is the rest of the token digits? */
- for (; c < namelen; c++)
- if (!(tokstart[c] >= '0' && tokstart[c] <= '9'))
- break;
- if (c == namelen)
- {
- yylval.lval = atoi (tokstart + 1 + negate);
- if (negate)
- yylval.lval = - yylval.lval;
- return LAST;
- }
- }
-
- /* Handle tokens that refer to machine registers:
- $ followed by a register name. */
-
- if (*tokstart == '$')
- for (c = 0; c < NUM_REGS; c++)
- if (namelen - 1 == strlen (reg_names[c])
- && !strncmp (tokstart + 1, reg_names[c], namelen - 1))
- {
- yylval.lval = c;
- return REGNAME;
- }
-
- if (namelen == 6 && !strncmp (tokstart, "struct", 6))
- {
- return STRUCT;
- }
- if (namelen == 5 && !strncmp (tokstart, "union", 5))
- {
- return UNION;
- }
- if (namelen == 4 && !strncmp (tokstart, "enum", 4))
- {
- return ENUM;
- }
- if (namelen == 6 && !strncmp (tokstart, "sizeof", 6))
- {
- return SIZEOF;
- }
- if (namelen == 8 && !strncmp (tokstart, "unsigned", 6))
- {
- return UNSIGNED;
- }
- yylval.sval.ptr = tokstart;
- yylval.sval.length = namelen;
-
- /* Any other names starting in $ are debugger internal variables. */
-
- if (*tokstart == '$')
- {
- yylval.ivar = (struct internalvar *) lookup_internalvar (copy_name (yylval.sval) + 1);
- return VARIABLE;
- }
-
- /* Use token-type TYPENAME for symbols that happen to be defined
- currently as names of types; NAME for other symbols.
- The caller is not constrained to care about the distinction. */
- if (lookup_typename (copy_name (yylval.sval), expression_context_block, 1))
- return TYPENAME;
- return NAME;
- }
-
- static
- yyerror ()
- {
- error ("Invalid syntax in expression.");
- }
-
- /* Return a null-terminated temporary copy of the name
- of a string token. */
-
- static char *
- copy_name (token)
- struct stoken token;
- {
- bcopy (token.ptr, namecopy, token.length);
- namecopy[token.length] = 0;
- return namecopy;
- }
-
- /* Reverse an expression from suffix form (in which it is constructed)
- to prefix form (in which we can conveniently print or execute it). */
-
- static void prefixify_subexp ();
-
- static void
- prefixify_expression (expr)
- register struct expression *expr;
- {
- register int len = sizeof (struct expression) +
- expr->nelts * sizeof (union exp_element);
- register struct expression *temp;
- register int inpos = expr->nelts, outpos = 0;
-
- temp = (struct expression *) alloca (len);
-
- /* Copy the original expression into temp. */
- bcopy (expr, temp, len);
-
- prefixify_subexp (temp, expr, inpos, outpos);
- }
-
- /* Return the number of exp_elements in the subexpression of EXPR
- whose last exp_element is at index ENDPOS - 1 in EXPR. */
-
- static int
- length_of_subexp (expr, endpos)
- register struct expression *expr;
- register int endpos;
- {
- register int oplen = 1;
- register int args = 0;
- register int i;
-
- if (endpos < 0)
- error ("?error in length_of_subexp");
-
- i = (int) expr->elts[endpos - 1].opcode;
-
- switch (i)
- {
- case OP_LONG:
- case OP_DOUBLE:
- oplen = 4;
- break;
-
- case OP_VAR_VALUE:
- case OP_LAST:
- case OP_REGISTER:
- case OP_INTERNALVAR:
- oplen = 3;
- break;
-
- case OP_FUNCALL:
- oplen = 3;
- args = 1 + expr->elts[endpos - 2].longconst;
- break;
-
- case UNOP_CAST:
- case UNOP_MEMVAL:
- oplen = 3;
- args = 1;
- break;
-
- case STRUCTOP_STRUCT:
- case STRUCTOP_PTR:
- args = 1;
- case OP_STRING:
- oplen = 3 + ((expr->elts[endpos - 2].longconst
- + sizeof (union exp_element))
- / sizeof (union exp_element));
-
- break;
-
- case TERNOP_COND:
- args = 3;
- break;
-
- case BINOP_ASSIGN_MODIFY:
- oplen = 3;
- args = 2;
- break;
-
- default:
- args = 1 + (i < (int) BINOP_END);
- }
-
- while (args > 0)
- {
- oplen += length_of_subexp (expr, endpos - oplen);
- args--;
- }
-
- return oplen;
- }
-
- /* Copy the subexpression ending just before index INEND in INEXPR
- into OUTEXPR, starting at index OUTBEG.
- In the process, convert it from suffix to prefix form. */
-
- static void
- prefixify_subexp (inexpr, outexpr, inend, outbeg)
- register struct expression *inexpr;
- struct expression *outexpr;
- register int inend;
- int outbeg;
- {
- register int oplen = 1;
- register int args = 0;
- register int i;
- int *arglens;
- enum exp_opcode opcode;
-
- /* Compute how long the last operation is (in OPLEN),
- and also how many preceding subexpressions serve as
- arguments for it (in ARGS). */
-
- opcode = inexpr->elts[inend - 1].opcode;
- switch (opcode)
- {
- case OP_LONG:
- case OP_DOUBLE:
- oplen = 4;
- break;
-
- case OP_VAR_VALUE:
- case OP_LAST:
- case OP_REGISTER:
- case OP_INTERNALVAR:
- oplen = 3;
- break;
-
- case OP_FUNCALL:
- oplen = 3;
- args = 1 + inexpr->elts[inend - 2].longconst;
- break;
-
- case UNOP_CAST:
- case UNOP_MEMVAL:
- oplen = 3;
- args = 1;
- break;
-
- case STRUCTOP_STRUCT:
- case STRUCTOP_PTR:
- args = 1;
- case OP_STRING:
- oplen = 3 + ((inexpr->elts[inend - 2].longconst
- + sizeof (union exp_element))
- / sizeof (union exp_element));
-
- break;
-
- case TERNOP_COND:
- args = 3;
- break;
-
- case BINOP_ASSIGN_MODIFY:
- oplen = 3;
- args = 2;
- break;
-
- default:
- args = 1 + ((int) opcode < (int) BINOP_END);
- }
-
- /* Copy the final operator itself, from the end of the input
- to the beginning of the output. */
- inend -= oplen;
- bcopy (&inexpr->elts[inend], &outexpr->elts[outbeg],
- oplen * sizeof (union exp_element));
- outbeg += oplen;
-
- /* Find the lengths of the arg subexpressions. */
- arglens = (int *) alloca (args * sizeof (int));
- for (i = args - 1; i >= 0; i--)
- {
- oplen = length_of_subexp (inexpr, inend);
- arglens[i] = oplen;
- inend -= oplen;
- }
-
- /* Now copy each subexpression, preserving the order of
- the subexpressions, but prefixifying each one.
- In this loop, inend starts at the beginning of
- the expression this level is working on
- and marches forward over the arguments.
- outbeg does similarly in the output. */
- for (i = 0; i < args; i++)
- {
- oplen = arglens[i];
- inend += oplen;
- prefixify_subexp (inexpr, outexpr, inend, outbeg);
- outbeg += oplen;
- }
- }
-
- /* This page contains the two entry points to this file. */
-
- /* Read a C expression from the string *STRINGPTR points to,
- parse it, and return a pointer to a struct expression that we malloc.
- Use block BLOCK as the lexical context for variable names;
- if BLOCK is zero, use the block of the selected stack frame.
- Meanwhile, advance *STRINGPTR to point after the expression,
- at the first nonwhite character that is not part of the expression
- (possibly a null character).
-
- If COMMA is nonzero, stop if a comma is reached. */
-
- struct expression *
- parse_c_1 (stringptr, block, comma)
- char **stringptr;
- struct block *block;
- {
- struct cleanup *old_chain;
-
- lexptr = *stringptr;
-
- paren_depth = 0;
- comma_terminates = comma;
-
- if (lexptr == 0 || *lexptr == 0)
- error_no_arg ("expression to compute");
-
- old_chain = make_cleanup (free_funcalls, 0);
- funcall_chain = 0;
-
- expression_context_block = block ? block : get_selected_block ();
-
- namecopy = (char *) alloca (strlen (lexptr) + 1);
- expout_size = 10;
- expout_ptr = 0;
- expout = (struct expression *) xmalloc (sizeof (struct expression)
- + expout_size * sizeof (union exp_element));
- make_cleanup (free_current_contents, &expout);
- if (yyparse ())
- yyerror ();
- discard_cleanups (old_chain);
- expout->nelts = expout_ptr;
- expout = (struct expression *)
- xrealloc (expout,
- sizeof (struct expression)
- + expout_ptr * sizeof (union exp_element));
- prefixify_expression (expout);
- *stringptr = lexptr;
- return expout;
- }
-
- /* Parse STRING as an expression, and complain if this fails
- to use up all of the contents of STRING. */
-
- struct expression *
- parse_c_expression (string)
- char *string;
- {
- register struct expression *exp;
- exp = parse_c_1 (&string, 0, 0);
- if (*string)
- error ("Junk after end of expression.");
- return exp;
- }
-