176 lines
3 KiB
C
176 lines
3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <unistd.h>
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#include <em.h>
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#include "astring.h"
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#define NCPS 8 /* chars per symbol */
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#define HSHSIZ 400 /* hash table size */
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#define SWSIZ 230 /* switch table size */
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#define CMSIZ 40 /* symbol stack size */
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#define SSIZE 20 /* operator and precedence stack size */
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#define OSSIZ 300*8 /* space for expression tree */
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#define EOS 04 /* end of string marker */
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/*
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* Holds a B symbol.
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* class is one of the storage classes below.
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* offset is used depending on class.
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*/
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struct hshtab {
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int class;
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int offset;
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int dim;
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struct hshtab *next;
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char name[NCPS+1];
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};
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struct tnode {
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int op;
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int value;
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struct tnode *tr1;
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struct tnode *tr2;
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};
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struct swtab {
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int swlab;
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int swval;
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};
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extern int wordsize;
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extern const char* modulename;
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int paramsize;
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struct hshtab hshtab[HSHSIZ];
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int hshused;
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int eof;
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int peekc;
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char ctab[128];
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struct hshtab *bsym;
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struct hshtab *paraml, *parame;
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int cval;
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int isn;
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char symbuf[NCPS+1];
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FILE *sbufp;
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int stack;
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struct tnode **cp;
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int *space;
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int ospace[OSSIZ];
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int retlab;
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int nerror;
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struct swtab swtab[SWSIZ];
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struct swtab *swp;
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int deflab;
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extern int contlab;
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extern int brklab;
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extern int opdope[];
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extern int line;
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extern int peeksym, peeksym2;
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void error(char *s, ...);
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void printtoken(int tok, FILE *out);
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struct tnode * block(int op, int value, struct tnode *tr1, struct tnode *tr2);
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void rcexpr(struct tnode *tr);
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void cbranch(struct tnode *t, int lab);
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void jump(int lab);
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void fnlabel(int l);
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void tonativeaddr(void);
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void fromnativeaddr(void);
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char* manglename(char* name, char prefix);
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#define EOFC 0
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#define SEMI 1
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#define LBRACE 2
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#define RBRACE 3
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#define LBRACK 4
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#define RBRACK 5
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#define LPARN 6
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#define RPARN 7
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#define COLON 8
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#define COMMA 9
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#define HASH 10
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#define MCALL 15
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#define CALL 16
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#define DECBEF 17
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#define INCBEF 18
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#define DECAFT 19
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#define INCAFT 20
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#define EXCLA 21
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#define NEG 22
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#define AMPER 23
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#define STAR 24
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#define QUEST 25
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#define NOT 26
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#define PLUS 30
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#define MINUS 31
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#define MOD 32
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#define TIMES 33
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#define DIVIDE 34
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#define OR 35
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#define AND 36
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#define LSHIFT 37
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#define RSHIFT 38
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#define EQUAL 39
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#define NEQUAL 40
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#define LESSEQ 41
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#define LESS 42
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#define GREATEQ 43
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#define GREAT 44
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#define EOR 45
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#define ASSIGN 49
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#define ASPLUS 50
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#define ASMINUS 51
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#define ASMOD 52
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#define ASTIMES 53
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#define ASDIV 54
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#define ASOR 55
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#define ASAND 56
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#define ASLSH 57
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#define ASRSH 58
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#define ASEQUAL 59
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#define ASNEQL 60
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#define ASLEQ 61
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#define ASLESS 62
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#define ASGTQ 63
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#define ASGREAT 64
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#define ASEOR 65
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#define CON 70
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#define STRING 71
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#define NAME 72
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#define KEYW 73
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#define SQUOTE 121
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#define DQUOTE 122
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#define NEWLN 123
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#define SPACE 124
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#define LETTER 125
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#define DIGIT 126
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#define UNKN 127
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#define SEOF 200
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/* storage classes */
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#define AUTO 1
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#define EXTERN 2
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#define INTERN 3
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#define ARG 4
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#define KEYWF 5
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/* keywords */
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#define CASE 3
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#define IF 4
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#define ELSE 5
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#define WHILE 6
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#define SWITCH 7
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#define GOTO 8
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#define RETURN 9
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#define DEFAULT 10
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#define BREAK 11
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