43BSD/contrib/icon/link/ilink.h - view

File: [CSRG BSD Unix] / 43BSD / contrib / icon / link / ilink.h
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:12:55 2018 UTC (8 years, 1 month ago) by root
Branches: MAIN, BSD
CVS tags: HEAD, BSD43

BSD 4.3

/* * External declarations for the linker. */ #include <stdio.h> #include "../h/config.h" /* * Miscellaneous external declarations. */ extern FILE *infile; /* current input file */ extern FILE *outfile; /* interpreter output file */ extern FILE *dbgfile; /* debug file */ extern char inname[]; /* input file name */ extern char outname[]; /* output file name */ extern char *pname; /* this program name (from command line) */ extern int line; /* source program line number (from ucode) */ extern char *file; /* source program file name (from ucode) */ extern int statics; /* total number of statics */ extern int dynoff; /* stack offset counter for locals */ extern int argoff; /* stack offset counter for arguments */ extern int static1; /* first static in procedure */ extern int nlocal; /* number of locals in local table */ extern int nconst; /* number of constants in constant table */ extern int nrecords; /* number of records in program */ extern int trace; /* initial setting of &trace */ extern int Dflag; /* debug flag */ extern char ixhdr[]; /* header line for direct execution */ extern char *iconx; /* location of iconx to put in #! line */ extern int hdrloc; /* location to place hdr block at */ extern struct lfile *lfiles; /* list of files to link */ extern struct lfile *getlfile(); /* * Interpreter code file header - this is written at the start of * an icode file after the start-up program (if any) and the #! line. */ struct header { int size; /* size of interpreter code */ int trace; /* initial value of &trace */ int records; /* location of record blocks */ int ftab; /* location of record/field table */ int globals; /* location of global variables */ int gnames; /* location of names of globals */ int statics; /* location of static variables */ int ident; /* location of identifier table */ } hdr; /* * Structures for symbol table entries. */ struct lentry { /* local table entry */ char *l_name; /* name of variable */ int l_flag; /* variable flags */ union { /* value field */ int staticid; /* unique id for static variables */ int offset; /* stack offset for args and locals */ struct gentry *global; /* global table entry */ } l_val; }; struct gentry { /* global table entry */ struct gentry *g_blink; /* link for bucket chain */ char *g_name; /* name of variable */ int g_flag; /* variable flags */ int g_nargs; /* number of args or fields */ int g_procid; /* procedure or record id */ int g_pc; /* position in icode of object */ }; struct centry { /* constant table entry */ int c_flag; /* type of literal flag */ union { /* value field */ long ival; /* integer */ double rval; /* real */ char *sval; /* string */ } c_val; int c_length; /* length of literal string */ int c_pc; /* position in icode of object */ }; struct ientry { /* identifier table entry */ struct ientry *i_blink; /* link for bucket chain */ char *i_name; /* pointer to string */ int i_length; /* length of string */ }; struct fentry { /* field table header entry */ struct fentry *f_blink; /* link for bucket chain */ char *f_name; /* name of field */ int f_fid; /* field id */ struct rentry *f_rlist; /* head of list of records */ }; struct rentry { /* field table record list entry */ struct rentry *r_link; /* link for list of records */ int r_recid; /* record id */ int r_fnum; /* offset of field within record */ }; /* * Structure for linked list of file names to link. */ struct lfile { struct lfile *lf_link; /* next file in list */ char *lf_name; /* name of file */ }; /* * Flag values in symbol tables. */ #define F_GLOBAL 01 /* variable declared global externally */ #define F_PROC 05 /* procedure (includes GLOBAL) */ #define F_RECORD 011 /* record (includes GLOBAL) */ #define F_DYNAMIC 020 /* variable declared local dynamic */ #define F_STATIC 040 /* variable declared local static */ #define F_BUILTIN 0101 /* identifier refers to built-in procedure */ #define F_IMPERROR 0400 /* procedure has default error */ #define F_ARGUMENT 01000 /* variable is a formal parameter */ #define F_INTLIT 02000 /* literal is an integer */ #define F_REALLIT 04000 /* literal is a real */ #define F_STRLIT 010000 /* literal is a string */ #define F_CSETLIT 020000 /* literal is a cset */ #define F_LONGLIT 040000 /* literal is a long integer */ /* * Symbol table region pointers. */ extern struct gentry **ghash; /* hash area for global table */ extern struct ientry **ihash; /* hash area for identifier table */ extern struct fentry **fhash; /* hash area for field table */ extern struct lentry *ltable; /* local table */ extern struct gentry *gtable; /* global table */ extern struct centry *ctable; /* constant table */ extern struct ientry *itable; /* identifier table */ extern struct fentry *ftable; /* field table headers */ extern struct rentry *rtable; /* field table record lists */ extern char *strings; /* string space */ extern int *labels; /* label table */ extern char *code; /* generated code space */ extern struct gentry *gfree; /* free pointer for global table */ extern struct ientry *ifree; /* free pointer for identifier table */ extern struct fentry *ffree; /* free pointer for field table headers */ extern struct rentry *rfree; /* free pointer for field table record lists */ extern char *sfree; /* free pointer for string space */ extern char *codep; /* free pointer for code space */ extern int lsize; /* size of local table */ extern int gsize; /* size of global table */ extern int csize; /* size of constant table */ extern int isize; /* size of identifier table */ extern int fsize; /* size of field table headers */ extern int rsize; /* size of field table record lists */ extern int ssize; /* size of string space */ extern int ihsize; /* size of identifier table hash area */ extern int ghsize; /* size of global table hash area */ extern int fhsize; /* size of field table hash area */ extern int maxlabels; /* maximum number of labels per procedure */ extern int maxcode; /* maximum amount of code per procedure */ extern int gmask; /* mask for global table hash */ extern int imask; /* mask for identifier table hash */ extern int fmask; /* mask for field table hash */ /* * Symbol table parameters. */ #define LSIZE 100 /* default size of local table */ #define GSIZE 200 /* default size of global table */ #define CSIZE 100 /* default size of constant table */ #define ISIZE 500 /* default size of identifier table */ #define FSIZE 100 /* default size of field table headers */ #define RSIZE 100 /* default size of field table record lists */ #define SSIZE 5000 /* default size of string space */ #define GHSIZE 64 /* default size of global table hash area */ #define IHSIZE 128 /* default size of identifier table hash area */ #define FHSIZE 32 /* default size of field table hash area */ #define MAXLABELS 500 /* default maximum number of labels/proc */ /* * Hash computation macros. */ #define ghasher(x) (((int)x)&gmask) /* for global table */ #define fhasher(x) (((int)x)&fmask) /* for field table */ /* * Machine-dependent constants. */ #ifdef VAX #define INTSIZE 32 /* # of bits in an int */ #define LOGINTSIZE 5 /* log of INTSIZE */ #define MAXCODE 10000 /* default maximum amount of code/proc */ #define OPSIZE 1 /* # of bytes for opcode */ #define OPNDSIZE 4 /* # of bytes in interpreter operands */ #define WORDSIZE sizeof(int *) /* # of bytes in a pointer (sizeof(int *)) */ #endif VAX #ifdef PORT #define INTSIZE x /* # of bits in an int */ #define LOGINTSIZE x /* log of INTSIZE */ /*#define LONGS /* longs are different from ints */ /*#define MINSHORT x /* smallest short integer */ /*#define MAXSHORT x /* largest short integer */ #define MAXCODE x /* default maximum amount of code/proc */ #define OPSIZE 1 /* # of bytes for opcode */ #define OPNDSIZE 4 /* # of bytes in interpreter operands */ #define WORDSIZE 4 /* # of bytes in a pointer (sizeof(int *)) */ #endif PORT #ifdef PDP11 #define INTSIZE 16 /* # of bits in an int */ #define LOGINTSIZE 4 /* log of INTSIZE */ #define LONGS /* longs are different from ints */ #define MINSHORT 0100000 /* smallest short integer */ #define MAXSHORT 077777 /* largest short integer */ #define MAXCODE 2000 /* default maximum amount of code/proc */ #define OPSIZE 1 /* # of bytes for opcode */ #define OPNDSIZE 2 /* # of bytes in interpreter operands */ #define WORDSIZE sizeof(int *) /* # of bytes in a pointer (sizeof(int *)) */ #endif PDP11 #define RKBLKSIZE 9*WORDSIZE /* size of record constructor block */ #define BITOFFMASK (INTSIZE-1) #define CSETSIZE (256/INTSIZE) /* number of ints to hold 256 cset bits. Use (256/INTSIZE)+1 if 256 % INTSIZE != 0 */ #define MAXHDR 1024 /* size of autoloading header */ #define HDRFILE IconxHdr /* * Cset accessing macros. The definition of setb(b,c) is the total * result of the following definitions. setb is only used in * code.c/emitcon. */ /* * Offset in word of cs bit. */ #define CSOFF(b) ((b) & BITOFFMASK) /* * Address of word of cs bit. */ #define CSPTR(b,c) ((c) + (((b)&0377) >> LOGINTSIZE)) /* * Set bit b in cset c. */ #define setb(b,c) (*CSPTR(b,c) |= (01 << CSOFF(b))) /* * Test bit b in cset c. */ #define tstb(b,c) ((*CSPTR(b,c) >> CSOFF(b)) & 01)

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