Research V6 development

[unix-history] / usr / source / c / c1h.c

/*
*      C pass 2 header
*/

#define swsiz   200
#define ossiz   500

struct  tnode {
       int     op;
       int     type;
       int     degree;
       struct  tnode *tr1, *tr2;
};

struct  bnode {
       int     bop;
       struct  tnode *btree;
       int     lbl;
       int     cond;
};

struct  tname {
       int     nop;
       int     ntype;
       int     elsize;
       char    class;
       char    regno;
       int     offset;
       int     nloc;
};

/*
* for field selections
*/
struct tsel {
       int     op;
       int     type;
       int     degree;
       struct  tnode *tr1;
       char    flen;
       char    bitoffs;
};

struct  tconst {
       int     cop;
       int     ctype;
       int     cdeg;
       int     value;
};

struct  optab {
       char    tabdeg1;
       char    tabtyp1;
       char    tabdeg2;
       char    tabtyp2;
       char    *tabstring;
};

struct  table {
       int     tabop;
       struct  optab *tabp;
};

struct  instab {
       int     iop;
       char    *str1;
       char    *str2;
};

struct  swtab {
       int     swlab;
       int     swval;
};

char    maprel[];
char    notrel[];
int     nreg;
int     isn;
int     namsiz;
int     line;
char    ascbuf[518];
int     nerror;
struct  table   cctab[];
struct  table   efftab[];
struct  table   regtab[];
struct  table   sptab[];
struct  table   lsptab[];
struct  instab  instab[];
struct  instab  branchtab[];
int     opdope[];
char    *opntab[];
int     nstack;
int     nfloat;
int     *spacep;
int     treespace[ossiz];
int     eolflg;
struct tconst czero, cone, fczero;

/*
       operators
*/
#define EOF     0
#define SEMI    1
#define LBRACE  2
#define RBRACE  3
#define LBRACK  4
#define RBRACK  5
#define LPARN   6
#define RPARN   7
#define COLON   8
#define COMMA   9
#define FSEL    10

#define KEYW    19
#define NAME    20
#define CON     21
#define STRING  22
#define FCON    23
#define SFCON   24

#define AUTOI   27
#define AUTOD   28
#define INCBEF  30
#define DECBEF  31
#define INCAFT  32
#define DECAFT  33
#define EXCLA   34
#define AMPER   35
#define STAR    36
#define NEG     37
#define COMPL   38

#define DOT     39
#define PLUS    40
#define MINUS   41
#define TIMES   42
#define DIVIDE  43
#define MOD     44
#define RSHIFT  45
#define LSHIFT  46
#define AND     47
#define NAND    55
#define OR      48
#define EXOR    49
#define ARROW   50
#define ITOF    51
#define FTOI    52
#define LOGAND  53
#define LOGOR   54
#define FTOL    56
#define LTOF    57
#define ITOL    58
#define LTOI    59

#define EQUAL   60
#define NEQUAL  61
#define LESSEQ  62
#define LESS    63
#define GREATEQ 64
#define GREAT   65
#define LESSEQP 66
#define LESSP   67
#define GREATQP 68
#define GREATP  69

#define ASPLUS  70
#define ASMINUS 71
#define ASTIMES 72
#define ASDIV   73
#define ASMOD   74
#define ASRSH   75
#define ASLSH   76
#define ASSAND  77
#define ASOR    78
#define ASXOR   79
#define ASSIGN  80
#define TAND    81
#define LTIMES  82
#define LDIV    83
#define LMOD    84
#define ASSNAND 85
#define LASTIMES 86
#define LASDIV  87
#define LASMOD  88

#define QUEST   90
#define LLSHIFT 91
#define ASLSHL  92
#define CALL1   98
#define CALL2   99
#define CALL    100
#define MCALL   101
#define JUMP    102
#define CBRANCH 103
#define INIT    104
#define SETREG  105
#define LOAD    106
#define RFORCE  110

/*
* Intermediate code operators
*/
#define BRANCH  111
#define LABEL   112
#define NLABEL  113
#define RLABEL  114
#define BDATA   200
#define WDATA   201
#define PROG    202
#define DATA    203
#define BSS     204
#define CSPACE  205
#define SSPACE  206
#define SYMDEF  207
#define SAVE    208
#define RETRN   209
#define EVEN    210
#define PROFIL  212
#define SWIT    213
#define EXPR    214
#define SNAME   215
#define RNAME   216
#define ANAME   217
#define NULL    218

/*
*      types
*/
#define INT     0
#define CHAR    1
#define FLOAT   2
#define DOUBLE  3
#define STRUCT  4
#define RSTRUCT 5
#define LONG    6

#define TYLEN   2
#define TYPE    07
#define XTYPE   (03<<3)
#define PTR     010
#define FUNC    020
#define ARRAY   030

/*
       storage classes
*/
#define KEYWC   1
#define MOS     10
#define AUTO    11
#define EXTERN  12
#define STATIC  13
#define REG     14
#define STRTAG  15
#define ARG     16
#define OFFS    20
#define XOFFS   21
#define SOFFS   22

/*
       Flag    bits
*/

#define BINARY  01
#define LVALUE  02
#define RELAT   04
#define ASSGOP  010
#define LWORD   020
#define RWORD   040
#define COMMUTE 0100
#define RASSOC  0200
#define LEAF    0400
#define CNVRT   01000