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/*
* This header file contains the definitions used by
* all parts of the C compiler parser (cc0)
* and the C compiler preprocessor (cpp).
* It includes the definitions of the reserved words,
* the built-in types, and so forth.
*/
#define CC0_H CC0_H
#include <stdio.h>
#include <setjmp.h>
#ifdef vax
#include "INC$LIB:mch.h"
#include "INC$LIB:host.h"
#include "INC$LIB:ops.h"
#include "INC$LIB:var.h"
#include "INC$LIB:varmch.h"
#include "INC$LIB:cc0mch.h"
#include "INC$LIB:stream.h"
#include "INC$LIB:cppmch.h"
#else
#include "mch.h"
#include "host.h"
#include "ops.h"
#include "var.h"
#include "varmch.h"
#include "cc0mch.h"
#include "stream.h"
#include "cppmch.h"
#endif
/*
* These defines adjust the sizes of the tables in the parser.
* They can be changed to just about anything,
*/
#define NHASH 67 /* Hash buckets */
#define NDIRS 32 /* Number of include directories */
#define NLEV 32 /* Nesting level of cpp constructs */
#define NDLEV 128 /* DSTACK size */
#define NDBUF 1024 /* Size of the define buffer */
#define ARG0 0200 /* Base of formals in define bodies */
#define SET0 (ARG0+NARGS) /* Base of hide set indices in text */
/* High parity characters are accepted in strings, but otherwise forbidden */
/* because they conflict with this scheme for packing macro formals and hide */
/* sets into the least space and overhead I can manage */
/*
* cpp keywords and macro classes.
* these hide at a distinct level
* in the symbol table.
*/
#define XUSER 0 /* User macro */
#define XUSERA 1 /* User macro with arguments */
#define XUFILE 2 /* Macro __FILE__ */
#define XULINE 3 /* Macro __LINE__ */
#define XUDATE 4 /* Macro __DATE__ */
#define XUTIME 5 /* Macro __TIME__ */
#define XUSTDC 6 /* Macro __STDC__ */
#define XDEFINED 8 /* User macro defined() */
#define XDEFINE 9 /* #define */
#define XINCLUDE 10 /* #include */
#define XUNDEF 11 /* #undef */
#define XLINE 12 /* #line */
#define XASSERT 13 /* #assert */
#define XERROR 14 /* #error */
#define XPRAGMA 15 /* #pragma */
#define XIF 20 /* #if is the first conditional */
#define XIFDEF 21 /* #ifdef */
#define XIFNDEF 22 /* #ifndef */
#define XELSE 23 /* #else */
#define XELIF 24 /* #elif */
#define XENDIF 25 /* #endif */
/*
* Tokens.
* Character classes.
* Other things that are C compiler parser specific.
* By convention, these begin at 100 decimal.
*/
#define DOT 100 /* . */
#define ARROW 101 /* -> */
#define SEMI 102 /* ; */
#define SHARP 103 /* # */
#define JUNK 104 /* Junk character */
#define SKIP 105 /* Whitespace */
#define LBRACE 106 /* { */
#define RBRACE 107 /* } */
#define LBRACK 108 /* [ */
#define RBRACK 109 /* ] */
#define LPAREN 110 /* ( */
#define RPAREN 111 /* ) */
#define ID 112 /* All identifiers */
#define CON 113 /* Constants */
#define QUOTE 114 /* ' */
#define STRING 115 /* " */
#define HIGH0 116 /* High parity junk, 0200..0237 */
#define HIGH1 117 /* High parity junk, 0240..0277 */
#define HIGH2 118 /* High parity junk, 0300..0337 */
#define HIGH3 119 /* High parity junk, 0340..0377 */
#define BACKDIV 120 /* Back slash */
/*
* Types.
* Classes.
* Do not change these unless you update the tables in "gcandt.c".
*/
#define INT 150 /* int */
#define CHAR 151 /* char */
#define FLOAT 152 /* float */
#define DOUBLE 153 /* double */
#define VOID 154 /* void */
#define STRUCT 155 /* struct */
#define UNION 156 /* union */
#define ENUM 157 /* enum */
#define LONG 158 /* long */
#define SHORT 159 /* short */
#define UNSIGNED 160 /* unsigned */
#define EXTERN 161 /* extern */
#define STATIC 162 /* static */
#define REGISTER 163 /* register */
#define TYPEDEF 164 /* typedef */
#define AUTO 165 /* auto */
#define CONST 166 /* const */
#define VOLATILE 167 /* volatile */
#define SIGNED 168 /* signed */
/*
* Other C reserved words.
* These are in no particular order at all.
*/
#define DEFAULT 180 /* default */
#define DO 181 /* do */
#define ELSE 182 /* else */
#define GOTO 183 /* goto */
#define IF 184 /* if */
#define RETURN 185 /* return */
#define SWITCH 186 /* switch */
#define CONTINUE 187 /* continue */
#define FOR 188 /* for */
#define WHILE 189 /* while */
#define BREAK 190 /* break */
#define CASE 191 /* case */
/* MWC proprietary keywords */
#define READONLY 200 /* readonly */
#define ALIEN 201 /* Other language interface */
/*
* Types.
*/
#define T_NONE 0 /* No type (yet) */
#define T_CHAR 1 /* Char */
#define T_UCHAR 2 /* Unsigned char */
#define T_SHORT 3 /* Short */
#define T_USHORT 4 /* Unsigned short */
#define T_INT 5 /* Int */
#define T_UINT 6 /* Unsigned int */
#define T_PTR 7 /* Pointer */
#define T_LONG 8 /* Long */
#define T_ULONG 9 /* Unsigned long */
#define T_FLOAT 10 /* Float */
#define T_DOUBLE 11 /* Double */
#define T_VOID 12 /* Void */
#define T_STRUCT 13 /* Struct */
#define T_FSTRUCT 14 /* Forward struct reference */
#define T_UNION 15 /* Union */
#define T_FUNION 16 /* Forward union reference */
#define T_ENUM 17 /* Enumeration */
#define T_FENUM 18 /* Forward enumeration reference */
#define T_LDOUBLE 19 /* Long double, should follow double NB */
/*
* Storage classes.
*/
#define C_NONE 0 /* No class */
#define C_AUTO 1 /* Auto */
#define C_SIN 2 /* Static internal */
#define C_SEX 3 /* Static external */
#define C_GDEF 4 /* Global def. */
#define C_GREF 5 /* Global ref. */
#define C_ARG 6 /* Argument */
#define C_CXT 7 /* Contextual */
#define C_LAB 8 /* Label */
#define C_FREF 9 /* Forward ref. label */
#define C_KEY 10 /* Keyword */
#define C_TYPE 11 /* Typedef name */
#define C_REG 12 /* Register */
#define C_STAG 13 /* Structure tag */
#define C_UTAG 14 /* Union tag */
#define C_ETAG 15 /* Enumeration tag */
#define C_MOS 16 /* Member of structure */
#define C_MOU 17 /* Member of union */
#define C_MOE 18 /* Member of enumeration */
#define C_PAUTO 19 /* Parametric auto */
#define C_PREG 20 /* Parametric register */
/*
* Dimensions.
* A list of these begins at the "s_dp" of a symbol
* and at the "e_dp" of an expression tree node.
*/
typedef struct dim {
struct dim *d_dp; /* Link */
short d_type; /* Type */
sizeof_t d_bound; /* Array bound */
} DIM;
#define D_PTR 0 /* Pointer */
#define D_FUNC 1 /* Function returning */
#define D_ARRAY 2 /* Array */
#define D_MOSAR 3 /* MOS array */
#define D_CONST 4 /* const modifier */
#define D_VOLATILE 5 /* volatile modifier */
/*
* An INFO structure keeps track of structure elements,
* union elements and enumeration constants.
* It is pointed to by the INFO links of symbols and expressions.
* The reference count only considers symbol usages.
*/
typedef struct {
short i_refc; /* Reference count */
short i_nsp; /* Number of symbols */
union {
sizeof_t i_data0;
int i_data1;
} i_data;
struct sym *i_sp[]; /* The symbols */
} INFO;
#define i_size i_data.i_data0 /* Structure or union size */
#define i_type i_data.i_data1 /* Base type of an enumeration */
/*
* Symbol.
* Symbols are kept in a hash table.
* Each bucket has the keywords on the front.
*/
typedef struct symbol SYM;
typedef struct token TOK;
struct symbol {
SYM *s_sp; /* Link */
int s_slevel; /* Symbol table level */
int s_value; /* Value */
int s_dline; /* Decl. line number */
char s_level; /* Block level */
char s_flag; /* Flag */
char s_width; /* Field width */
char s_offset; /* Bit offset */
char s_seg; /* Segment */
char s_class; /* Class */
char s_type; /* Type */
DIM *s_dp; /* Dimensions */
INFO *s_ip; /* Info */
char *s_id; /* Name string */
};
/* Keyword symbols occupy less space */
typedef struct {
SYM *s_sp;
int s_slevel;
int s_value;
} KEYSYM;
/* Preprocessor symbols take a little more space */
typedef struct {
SYM *s_sp;
int s_slevel;
int s_value;
int s_narg;
#if ANSI_STUPID
TOK *s_targs;
#endif
char s_body[];
} CPPSYM;
/* C symbol s_flag values */
#define S_RONLY 01 /* Readonly */
#define S_ALIEN 02 /* Other language */
#define S_USED 04 /* Used */
#define S_TAG 010 /* Tag present */
#define S_INIT 020 /* Initialized */
#define S_SYMB 040 /* Written to debug table */
/* Disjunct symbol table levels */
#define SL_CPP -2 /* Cpp tokens */
#define SL_KEY -1 /* C keywords and ops */
#define SL_VAR 0 /* Normal symbols */
#define SL_LAB 1 /* Labels */
#define SL_TAG 2 /* Tags */
#define SL_MOS 3 /* Members of structures, and up */
/* Lexical scope levels */
#define LL_EXT 0 /* Externals */
#define LL_ARG 1 /* Parameters */
#define LL_AUTO 2 /* Automatics, and up */
/*
* All tokens are hashed.
* Each unique token is the head
* of a list of symbol buckets.
*/
struct token {
TOK *t_tp;
SYM *t_sym;
char t_id[];
};
/*
* Macro expansion stack.
*/
typedef struct {
char ds_type; /* Type of stack item */
char ds_char; /* Ungotten char or temp */
char *ds_ptr; /* Pointer to string */
} DSTACK;
#define DS_FILE 0 /* Dstack is at source file level */
#define DS_UNGET 1 /* Dstack is ungotten character */
#define DS_FUNGET 2 /* Dstack is ungotten file character */
#define DS_STRNG 3 /* Dstack is normal string to read */
#define DS_PARAM 4 /* Dstack is parameter to be expanded */
#define DS_SHARP 5 /* Dstack is parameter to stringize */
#define DS_SHARP2 6 /* Dstack is parameter to glue */
#define DS_DPUTP 7 /* Dstack is pushed dputp pointer */
#define DS_NAME 8 /* Dstack is pushed name of macro */
#define DS_IEOF 9 /* Dstack is internal end of file */
#define DS_UFILE 10 /* Dstack is __FILE__ to expand */
/*
* Macro hide set structure.
*/
typedef struct hideset HIDESET;
typedef struct hidemem HIDEMEM;
struct hideset {
HIDESET *h_next_set;
HIDEMEM *h_this_set;
};
struct hidemem {
HIDEMEM *h_next_mem;
TOK *h_this_mem;
};
/*
* Conditional stack.
* One of these is allocated when a #if* line
* is encountered to store the state of the
* conditional block until the matching #endif
* is found.
*/
typedef struct {
int c_op; /* Last operator seen in block */
int c_state; /* Has any block been true */
} CSTACK;
/*
* Include pushdown stack entry.
* One of these is allocated when a #include line
* is encountered to hold the file name, the line number
* and the FILE pointer of the old source file.
*/
typedef struct {
FILE *i_fp; /* Saved FILE pointer */
int i_line; /* Saved line */
TOK *i_file; /* Saved file name */
CSTACK *i_cstackp; /* Saved conditional stack state */
} ISTACK;
/*
* These structures keep track of the labels and constants for switches.
* It is used by code in the statement reader "stat.c".
*/
typedef struct {
int sc_lab; /* Label number */
ival_t sc_val; /* Value */
} SCASE;
typedef struct {
int sb_ncase; /* # of cases */
int sb_dlab; /* Default label */
SCASE sb_case[]; /* Adjustable array */
} SBLOCK;
/*
* Tree nodes.
* All tree nodes are the same size.
* A node of any type may be changed into a node of any other type.
* The madness with the defines and the dots is just niceness
* in the wake of wishing to compile under both Bell and UCB structure rules.
*/
typedef struct tree TREE;
struct tree
{
short t_op; /* Opcode */
short t_type; /* Internal type (T_) */
DIM *t_dp; /* DIM list */
INFO *t_ip; /* INFO if aggregate */
union {
struct {
TREE *t_xlp;
union {
TREE *t_xrp;
struct {
char t_xfw;
char t_xfb;
} t_1;
} t_2;
} t_3;
ival_t t_xival;
lval_t t_xlval;
dval_t t_xdval;
sizeof_t t_xzval;
struct {
sizeof_t t_xoffs;
int t_xseg;
union {
int t_xlab;
SYM *t_xsp;
} t_4;
} t_5;
short t_xreg;
} t_6;
};
#define t_lp t_6.t_3.t_xlp /* Left link */
#define t_rp t_6.t_3.t_2.t_xrp /* Right link */
#define t_width t_6.t_3.t_2.t_1.t_xfw /* Field width, bits */
#define t_base t_6.t_3.t_2.t_1.t_xfb /* Field base bit */
#define t_ival t_6.t_xival /* ICON value */
#define t_lval t_6.t_xlval /* LCON value */
#define t_dval t_6.t_xdval /* DCON value */
#define t_zval t_6.t_xzval /* ZCON value */
#define t_reg t_6.t_xreg /* Register code */
#define t_offs t_6.t_5.t_xoffs /* Label offset */
#define t_seg t_6.t_5.t_xseg /* Segment */
#define t_label t_6.t_5.t_4.t_xlab /* Label # */
#define t_sp t_6.t_5.t_4.t_xsp /* Global symbol link */
/*
* Opdope flag bits.
*/
#define PRIO 037 /* Priority */
#define NSTL 040 /* No structures on left */
#define RAS 0100 /* Right associative */
#define RLVL 0200 /* Require lvalue on left */
#define NFLT 0400 /* No floats */
#define NPTR 01000 /* No pointers on right */
#define NPTL 02000 /* No pointers on left */
#define RTOR 04000 /* Require truth value on right */
#define RTOL 010000 /* Require truth value on left */
#define ASGN 020000 /* Assignment op */
#define NSTR 040000 /* No structures on right */
/*
* Conversion dope bits.
*/
#define GOAL 077 /* Goal type */
#define CVRA 0100 /* Convert right on assignment */
#define CVR 0200 /* Convert right */
#define CVL 0400 /* Convert left */
#define GTL 01000 /* Goal type from left */
#define GTR 02000 /* Goal type from right */
#define UREL 04000 /* Unsigned relation check needed */
#define CARA 010000 /* Cast right on assignment */
/*
* cpp variables.
*/
extern char dbuf[NDBUF], *dputp, *dpshp;
extern DSTACK dstack[], *dstackp, *dlistp;
extern ISTACK istack[], *istackp;
extern CSTACK cstack[], *cstackp;
extern HIDESET *hidefree, *hidesets;
extern int cstate;
extern int lastchar;
extern int instring;
extern int notskip;
extern int ndirs;
extern char *incdirs[];
extern char deftrue[];
extern char deffalse[];
extern long curtime;
/*
* Functions and variables.
*/
extern int mysizes[];
extern SYM *cfsym;
extern int cflab;
extern char id[];
extern unsigned idhash;
extern unsigned idhide;
extern int idsize;
extern TOK *idp;
extern TOK *hash0[];
extern int llex;
extern int lsym;
extern int s;
extern ival_t ival;
extern lval_t lval;
extern dval_t dval;
extern short tval;
extern int line;
extern char file[];
extern TOK *tfile;
extern unsigned char ct[];
extern TOK *newtoken();
extern SYM *newsym();
extern CPPSYM *newcpp();
extern DIM *dupldim();
extern DIM *tackdim();
extern INFO *newinfo();
extern char *new();
extern int nerr;
extern char *passname;
extern int nargs;
extern SYM *args[];
extern TREE *expr();
extern int incpp;
extern int ininit;
extern int incase;
extern char *talloc();
extern TREE *transform();
extern short opdope[];
extern short cvdope[];
extern TREE *pexpr();
extern DIM *tdalloc();
extern TREE *build();
extern TREE *charray();
extern TREE *chfun();
extern TREE *bicon();
extern TREE *bzcon();
extern TREE *bid();
extern TREE *bcvt();
extern TREE *bconvert();
extern TREE *term();
extern TREE *tree();
extern TREE *bstring();
extern char mytypes[];
extern TREE *fold0();
extern SYM *deflookup();
extern SYM *reflookup();
extern SYM *moslookup();
extern SYM *fakedef();
extern SYM *taglookup();
extern SYM *fixlevel();
extern SYM *declare();
extern long fieldalign();
extern sizeof_t ssize();
extern sizeof_t tsize();
extern sizeof_t sdsize();
extern sizeof_t tidsize();
extern sizeof_t psize();
extern sizeof_t getbound();
extern sizeof_t szcheck(); /* mch - object size check */
extern TREE *cast(); /* cast declarator reader */
extern int oldseg;
extern int mnamef;
extern int labgen;
extern int cblab;
extern int cclab;
extern SBLOCK *sbp;
extern FILE *ifp;
extern FILE *ofp; /* Output file */
#if OVERLAID
extern jmp_buf death; /* Fatal errors */
#endif
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