BSD 4_2 release

[unix-history] / usr / src / lib / mip / mfile1

/*      @(#)mfile1      4.2     (Berkeley)      83/04/04        */

# include "macdefs"
# include "manifest"

/*      storage classes  */
# define SNULL 0
# define AUTO 1
# define EXTERN 2
# define STATIC 3
# define REGISTER 4
# define EXTDEF 5
# define LABEL 6
# define ULABEL 7
# define MOS 8
# define PARAM 9
# define STNAME 10
# define MOU 11
# define UNAME 12
# define TYPEDEF 13
# define FORTRAN 14
# define ENAME 15
# define MOE 16
# define UFORTRAN 17
# define USTATIC 18
       /* field size is ORed in */
# define FIELD 0100
# define FLDSIZ 077
# ifndef BUG1
extern char *scnames();
# endif

/*      location counters */
# define PROG 0
# define DATA 1
# define ADATA 2
# define STRNG 3
# define ISTRNG 4
# define STAB 5


/* symbol table flags */
# define SMOS 01
# define SHIDDEN 02
# define SHIDES 04
# define SSET 010
# define SREF 020
# define SNONUNIQ 040
# define STAG 0100

# ifndef FIXDEF
# define FIXDEF(p)
#endif
# ifndef FIXARG
# define FIXARG(p)
# endif
# ifndef FIXSTRUCT
# define FIXSTRUCT(a,b)
# endif

       /* alignment of initialized quantities */
# ifndef AL_INIT
#       define  AL_INIT ALINT
# endif

struct symtab {
#ifndef FLEXNAMES
       char sname[NCHNAM];
#else
       char *sname;
#endif
       TWORD stype;  /* type word */

       char sclass;  /* storage class */
       char slevel;  /* scope level */
       char sflags;  /* flags for set, use, hidden, mos, etc. */
       int offset;  /* offset or value */
       short dimoff; /* offset into the dimension table */
       short sizoff; /* offset into the size table */
       short suse;  /* line number of last use of the variable */
       };


# ifdef ONEPASS
/* NOPREF must be defined for use in first pass tree machine */
# define NOPREF 020000  /* no preference for register assignment */
#else

union ndu {
       struct {
               int op;
               TWORD type;
               int cdim, csiz;
               }fn; /* front node */
       struct {
               int op;
               TWORD type;
               int cdim, csiz;
               NODE *left;
               NODE * right;
               }in; /* interior node */
       
       struct {
               /* this structure is the same as above,
                  but is used when a value, rather than
                  address, is kept in +left */
               int op;
               TWORD type;
               int cdim, csiz;
               CONSZ lval;
               int rval;
               }tn; /* terminal node */
       
       struct {
               /* this structure is used when a floating point constant
                  is being computed */
               int op;
               TWORD type;
               int cdim, csiz;
               double dval;
               }fpn; /* floating point node */

       };
# endif

struct sw {
       CONSZ sval;
       int slab;
       };

extern struct sw swtab[];
extern struct sw *swp;
extern int swx;

extern int ftnno;
extern int blevel;
extern int instruct, stwart;

extern int lineno, nerrors;
typedef union {
       int intval;
       NODE * nodep;
       } YYSTYPE;
extern YYSTYPE yylval;

extern CONSZ lastcon;
extern double dcon;

extern char ftitle[];
extern char ititle[];
extern struct symtab stab[];
extern int curftn;
extern int curclass;
extern int curdim;
extern int dimtab[];
extern int paramstk[];
extern int paramno;
extern int autooff, argoff, strucoff;
extern int regvar;
extern int minrvar;
extern int brkflag;
extern char yytext[];

extern int strflg;

extern OFFSZ inoff;

extern int reached;

/*      tunnel to buildtree for name id's */

extern int idname;

extern NODE node[];
extern NODE *lastfree;

extern int cflag, hflag, pflag;

/* various labels */
extern int brklab;
extern int contlab;
extern int flostat;
extern int retlab;
extern int retstat;
extern int asavbc[], *psavbc;

/*      flags used in structures/unions */

# define SEENAME 01
# define INSTRUCT 02
# define INUNION 04
# define FUNNYNAME 010
# define TAGNAME 020

/*      flags used in the (elementary) flow analysis ... */

# define FBRK 02
# define FCONT 04
# define FDEF 010
# define FLOOP 020

/*      flags used for return status */

# define RETVAL 1
# define NRETVAL 2

/*      used to mark a constant with no name field */

# define NONAME 040000

       /* mark an offset which is undefined */

# define NOOFFSET (-10201)

/*      declarations of various functions */

extern NODE
       *buildtree(),
       *bdty(),
       *mkty(),
       *rstruct(),
       *dclstruct(),
       *getstr(),
       *tymerge(),
       *stref(),
       *offcon(),
       *bcon(),
       *bpsize(),
       *convert(),
       *pconvert(),
       *oconvert(),
       *ptmatch(),
       *tymatch(),
       *makety(),
       *block(),
       *doszof(),
       *talloc(),
       *optim(),
       *strargs(),
       *clocal();

OFFSZ   tsize(),
       psize();

TWORD   types();


double atof();

char *exname(), *exdcon();

# define checkst(x)

# ifndef CHARCAST
/* to make character constants into character connstants */
/* this is a macro to defend against cross-compilers, etc. */
# define CHARCAST(x) (char)(x)
# endif

# define BCSZ 100 /* size of the table to save break and continue labels */
# define SYMTSZ 3000 /* size of the symbol table (was 500) */
# define DIMTABSZ 4200 /* size of the dimension/size table (was 800) */
# define PARAMSZ 300 /* size of the parameter stack */
# define SWITSZ 500 /* size of switch table */
/*      special interfaces for yacc alone */
/*      These serve as abbreviations of 2 or more ops:
       ASOP    =, = ops
       RELOP   LE,LT,GE,GT
       EQUOP   EQ,NE
       DIVOP   DIV,MOD
       SHIFTOP LS,RS
       ICOP    ICR,DECR
       UNOP    NOT,COMPL
       STROP   DOT,STREF

       */
# define ASOP 25
# define RELOP 26
# define EQUOP 27
# define DIVOP 28
# define SHIFTOP 29
# define INCOP 30
# define UNOP 31
# define STROP 32

# define LP 50
# define RP 51
# define LC 52
# define RC 53