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vmgen-related changes:
in prims2x:
  Conversion macros for single items now take 2 arguments
  Converting from two items to a type has changed order
  argument printing for disassembler disabled (for now)
  disassembler now also uses VM_IS_INST
in Gforth and vmgen-ex: adapted to work with changed prims2x
new: vmgen-ex2: uses union for Cell instead of casting (lots of
   changes compared to vmgen-ex)

    1: /* common header file
    2: 
    3:   Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
    4: 
    5:   This file is part of Gforth.
    6: 
    7:   Gforth is free software; you can redistribute it and/or
    8:   modify it under the terms of the GNU General Public License
    9:   as published by the Free Software Foundation; either version 2
   10:   of the License, or (at your option) any later version.
   11: 
   12:   This program is distributed in the hope that it will be useful,
   13:   but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15:   GNU General Public License for more details.
   16: 
   17:   You should have received a copy of the GNU General Public License
   18:   along with this program; if not, write to the Free Software
   19:   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: */
   21: 
   22: #define _GNU_SOURCE
   23: 
   24: #include "config.h"
   25: #include <stdio.h>
   26: 
   27: #if defined(DOUBLY_INDIRECT)
   28: #  undef DIRECT_THREADED
   29: #  undef INDIRECT_THREADED
   30: #  define INDIRECT_THREADED
   31: #endif
   32: 
   33: #if defined(GFORTH_DEBUGGING)
   34: #  undef USE_TOS
   35: #  undef USE_FTOS
   36: #  define USE_NO_TOS
   37: #  define USE_NO_FTOS
   38: #endif
   39: 
   40: #include <limits.h>
   41: 
   42: #if defined(NeXT)
   43: #  include <libc.h>
   44: #endif /* NeXT */
   45: 
   46: /* symbol indexed constants */
   47: 
   48: #define DOCOL	0
   49: #define DOCON	1
   50: #define DOVAR	2
   51: #define DOUSER	3
   52: #define DODEFER	4
   53: #define DOFIELD	5
   54: #define DODOES	6
   55: #define DOESJUMP	7
   56: 
   57: /* the size of the DOESJUMP, which resides between DOES> and the does-code */
   58: #define DOES_HANDLER_SIZE	(2*sizeof(Cell))
   59: 
   60: #include "machine.h"
   61: 
   62: /* Forth data types */
   63: /* Cell and UCell must be the same size as a pointer */
   64: #define CELL_BITS	(sizeof(Cell) * CHAR_BIT)
   65: #define FLAG(b) (-(b))
   66: #define FILEIO(error)	(FLAG(error) & -37)
   67: #define FILEEXIST(error)	(FLAG(error) & -38)
   68: 
   69: #define F_TRUE (FLAG(0==0))
   70: #define F_FALSE (FLAG(0!=0))
   71: 
   72: #ifdef BUGGY_LONG_LONG
   73: typedef struct {
   74:   Cell hi;
   75:   UCell lo;
   76: } DCell;
   77: 
   78: typedef struct {
   79:   UCell hi;
   80:   UCell lo;
   81: } UDCell;
   82: 
   83: #define LONG2UD(l)	({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(l); _ud;})
   84: #define UD2LONG(ud)	((long)(ud.lo))
   85: #define DZERO		((DCell){0,0})
   86: 
   87: #else /* ! defined(BUGGY_LONG_LONG) */
   88: 
   89: /* DCell and UDCell must be twice as large as Cell */
   90: typedef DOUBLE_CELL_TYPE DCell;
   91: typedef unsigned DOUBLE_CELL_TYPE UDCell;
   92: 
   93: #define LONG2UD(l)	((UDCell)(l))
   94: #define UD2LONG(ud)	((long)(ud))
   95: #define DZERO		((DCell)0)
   96: 
   97: #endif /* ! defined(BUGGY_LONG_LONG) */
   98: 
   99: typedef union {
  100:   struct {
  101: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
  102:     Cell high;
  103:     UCell low;
  104: #else
  105:     UCell low;
  106:     Cell high;
  107: #endif
  108:   } cells;
  109:   DCell d;
  110:   UDCell ud;
  111: } Double_Store;
  112: 
  113: #define FETCH_DCELL_T(d_,lo,hi,t_)	({ \
  114: 				     Double_Store _d; \
  115: 				     _d.cells.low = (lo); \
  116: 				     _d.cells.high = (hi); \
  117: 				     (d_) = _d.t_; \
  118: 				 })
  119: 
  120: #define STORE_DCELL_T(d_,lo,hi,t_)	({ \
  121: 				     Double_Store _d; \
  122: 				     _d.t_ = (d_); \
  123: 				     (lo) = _d.cells.low; \
  124: 				     (hi) = _d.cells.high; \
  125: 				 })
  126: 
  127: #define vm_twoCell2d(lo,hi,d_)  FETCH_DCELL_T(d_,lo,hi,d);
  128: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
  129: 
  130: #define vm_d2twoCell(d_,lo,hi)  STORE_DCELL_T(d_,lo,hi,d);
  131: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
  132: 
  133: typedef Label *Xt;
  134: 
  135: /* PFA gives the parameter field address corresponding to a cfa */
  136: #define PFA(cfa)	(((Cell *)cfa)+2)
  137: /* PFA1 is a special version for use just after a NEXT1 */
  138: #define PFA1(cfa)	PFA(cfa)
  139: /* CODE_ADDRESS is the address of the code jumped to through the code field */
  140: #define CODE_ADDRESS(cfa)	(*(Xt)(cfa))
  141: 
  142: /* DOES_CODE is the Forth code does jumps to */
  143: #if !defined(DOUBLY_INDIRECT)
  144: #  define DOES_CA (symbols[DODOES])
  145: #else /* defined(DOUBLY_INDIRECT) */
  146: #  define DOES_CA ((Label)&xts[DODOES])
  147: #endif /* defined(DOUBLY_INDIRECT) */
  148: 
  149: 
  150: 
  151: #define DOES_CODE(cfa)	({Xt _cfa=(Xt)(cfa); \
  152: 			  (Xt *)(_cfa[0]==DOES_CA ? _cfa[1] : NULL);})
  153: #define DOES_CODE1(cfa)	((Xt *)(cfa[1]))
  154: /* MAKE_CF creates an appropriate code field at the cfa;
  155:    ca is the code address */
  156: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
  157: /* make a code field for a defining-word-defined word */
  158: #define MAKE_DOES_CF(cfa,does_code)  ({MAKE_CF(cfa,DOES_CA);	\
  159: 				       ((Cell *)cfa)[1] = (Cell)(does_code);})
  160: /* the does handler resides between DOES> and the following Forth code */
  161: /* not needed in indirect threaded code */
  162: #if defined(DOUBLY_INDIRECT)
  163: #define MAKE_DOES_HANDLER(addr)	MAKE_CF(addr, ((Label)&symbols[DOESJUMP]))
  164: #else /* !defined(DOUBLY_INDIRECT) */
  165: #define MAKE_DOES_HANDLER(addr)	0
  166: #endif /* !defined(DOUBLY_INDIRECT) */
  167: 
  168: #ifdef DEBUG
  169: #	define	NAME(string)	fprintf(stderr,"%08lx: "string"\n",(Cell)ip);
  170: #else
  171: #	define	NAME(string)
  172: #endif
  173: 
  174: #define CF(const)	(-const-2)
  175: 
  176: #define CF_NIL	-1
  177: 
  178: #ifndef FLUSH_ICACHE
  179: #warning flush-icache probably will not work (see manual)
  180: #	define FLUSH_ICACHE(addr,size)
  181: #endif
  182: 
  183: #ifdef USE_TOS
  184: #define IF_spTOS(x) x
  185: #else
  186: #define IF_spTOS(x)
  187: #define spTOS (sp[0])
  188: #endif
  189: 
  190: #ifdef USE_FTOS
  191: #define IF_fpTOS(x) x
  192: #else
  193: #define IF_fpTOS(x)
  194: #define fpTOS (fp[0])
  195: #endif
  196: 
  197: #define IF_rpTOS(x)
  198: #define rpTOS (rp[0])
  199: 
  200: typedef struct {
  201:   Address base;		/* base address of image (0 if relocatable) */
  202:   UCell checksum;	/* checksum of ca's to protect against some
  203: 			   incompatible	binary/executable combinations
  204: 			   (0 if relocatable) */
  205:   UCell image_size;	/* all sizes in bytes */
  206:   UCell dict_size;
  207:   UCell data_stack_size;
  208:   UCell fp_stack_size;
  209:   UCell return_stack_size;
  210:   UCell locals_stack_size;
  211:   Xt *boot_entry;	/* initial ip for booting (in BOOT) */
  212:   Xt *throw_entry;	/* ip after signal (in THROW) */
  213:   Cell unused1;		/* possibly tib stack size */
  214:   Label *xt_base;         /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
  215:   Address data_stack_base; /* this and the following fields are initialized by the loader */
  216:   Address fp_stack_base;
  217:   Address return_stack_base;
  218:   Address locals_stack_base;
  219: } ImageHeader;
  220: /* the image-header is created in main.fs */
  221: 
  222: Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
  223: Address my_alloc(Cell size);
  224: char *tilde_cstr(Char *from, UCell size, int clear);
  225: 
  226: /* dblsub routines */
  227: DCell dnegate(DCell d1);
  228: UDCell ummul (UCell a, UCell b);
  229: DCell mmul (Cell a, Cell b);
  230: UDCell umdiv (UDCell u, UCell v);
  231: DCell smdiv (DCell num, Cell denom);
  232: DCell fmdiv (DCell num, Cell denom);
  233: 
  234: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
  235: 
  236: /* peephole routines */
  237: 
  238: Xt *primtable(Label symbols[], Cell size);
  239: Cell prepare_peephole_table(Xt xts[]);
  240: Xt peephole_opt(Xt xt1, Xt xt2, Cell peeptable);
  241: void vm_print_profile(FILE *file);
  242: void vm_count_block(Xt *ip);
  243: 
  244: /* dynamic superinstruction stuff */
  245: Label compile_prim(Label prim);
  246: 
  247: extern int offset_image;
  248: extern int die_on_signal;
  249: extern UCell pagesize;
  250: extern ImageHeader *gforth_header;
  251: extern Label *vm_prims;
  252: extern Label *xts;
  253: extern Cell npriminfos;
  254: 
  255: #ifdef GFORTH_DEBUGGING
  256: extern Xt *ip;
  257: extern Cell *rp;
  258: #endif
  259: 
  260: #ifdef PRINT_SUPER_LENGTHS
  261: Cell prim_length(Cell prim);
  262: void print_super_lengths();
  263: #endif
  264: 
  265: /* declare all the functions that are missing */
  266: #ifndef HAVE_ATANH
  267: extern double atanh(double r1);
  268: extern double asinh(double r1);
  269: extern double acosh(double r1);
  270: #endif
  271: #ifndef HAVE_ECVT
  272: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
  273: #endif
  274: #ifndef HAVE_MEMMOVE
  275: /* extern char *memmove(char *dest, const char *src, long n); */
  276: #endif
  277: #ifndef HAVE_POW10
  278: extern double pow10(double x);
  279: #endif
  280: #ifndef HAVE_STRERROR
  281: extern char *strerror(int err);
  282: #endif
  283: #ifndef HAVE_STRSIGNAL
  284: extern char *strsignal(int sig);
  285: #endif
  286: #ifndef HAVE_STRTOUL
  287: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
  288: #endif
  289: 
  290: 
  291: #define GROUP(x)