Annotation of gforth/engine/forth.h, revision 1.48
1.1 anton 1: /* common header file
2:
1.47 anton 3: Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
1.1 anton 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
1.13 anton 19: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1 anton 20: */
21:
22: #include "config.h"
1.18 anton 23: #include <stdio.h>
1.35 anton 24: #include <sys/time.h>
25: #include <unistd.h>
1.1 anton 26:
1.32 anton 27: #if defined(DOUBLY_INDIRECT)||defined(INDIRECT_THREADED)||defined(VM_PROFILING)
28: #define NO_DYNAMIC
29: #endif
30:
1.1 anton 31: #if defined(DOUBLY_INDIRECT)
32: # undef DIRECT_THREADED
33: # undef INDIRECT_THREADED
34: # define INDIRECT_THREADED
35: #endif
36:
1.23 anton 37: #if defined(GFORTH_DEBUGGING)
38: # undef USE_TOS
39: # undef USE_FTOS
40: # define USE_NO_TOS
41: # define USE_NO_FTOS
42: #endif
43:
1.1 anton 44: #include <limits.h>
45:
46: #if defined(NeXT)
47: # include <libc.h>
48: #endif /* NeXT */
49:
50: /* symbol indexed constants */
51:
52: #define DOCOL 0
53: #define DOCON 1
54: #define DOVAR 2
55: #define DOUSER 3
56: #define DODEFER 4
57: #define DOFIELD 5
58: #define DODOES 6
59: #define DOESJUMP 7
60:
61: /* the size of the DOESJUMP, which resides between DOES> and the does-code */
62: #define DOES_HANDLER_SIZE (2*sizeof(Cell))
63:
1.6 jwilke 64: #include "machine.h"
1.1 anton 65:
66: /* Forth data types */
67: /* Cell and UCell must be the same size as a pointer */
68: #define CELL_BITS (sizeof(Cell) * CHAR_BIT)
69: #define FLAG(b) (-(b))
70: #define FILEIO(error) (FLAG(error) & -37)
71: #define FILEEXIST(error) (FLAG(error) & -38)
72:
73: #define F_TRUE (FLAG(0==0))
74: #define F_FALSE (FLAG(0!=0))
75:
76: #ifdef BUGGY_LONG_LONG
77: typedef struct {
78: Cell hi;
79: UCell lo;
80: } DCell;
81:
82: typedef struct {
83: UCell hi;
84: UCell lo;
85: } UDCell;
86:
1.39 anton 87: #if SMALL_OFF_T
88: #define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
89: #define UD2OFF(ud) ((ud).lo)
90: #else /* !SMALL_OFF_T */
91: #define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
1.36 anton 92: #define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
1.39 anton 93: #endif /* !SMALL_OFF_T */
1.1 anton 94: #define DZERO ((DCell){0,0})
95:
96: #else /* ! defined(BUGGY_LONG_LONG) */
97:
98: /* DCell and UDCell must be twice as large as Cell */
99: typedef DOUBLE_CELL_TYPE DCell;
100: typedef unsigned DOUBLE_CELL_TYPE UDCell;
101:
1.48 ! anton 102: #define IOR(flag) ((flag)? -512-errno : 0)
1.36 anton 103: #define OFF2UD(o) ((UDCell)(o))
104: #define UD2OFF(ud) ((off_t)(ud))
1.16 anton 105: #define DZERO ((DCell)0)
106:
107: #endif /* ! defined(BUGGY_LONG_LONG) */
108:
1.1 anton 109: typedef union {
110: struct {
1.16 anton 111: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
1.1 anton 112: Cell high;
113: UCell low;
114: #else
115: UCell low;
116: Cell high;
1.20 crook 117: #endif
1.1 anton 118: } cells;
1.16 anton 119: DCell d;
120: UDCell ud;
1.1 anton 121: } Double_Store;
122:
1.16 anton 123: #define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
1.1 anton 124: Double_Store _d; \
125: _d.cells.low = (lo); \
126: _d.cells.high = (hi); \
1.16 anton 127: (d_) = _d.t_; \
1.1 anton 128: })
129:
1.16 anton 130: #define STORE_DCELL_T(d_,lo,hi,t_) ({ \
1.1 anton 131: Double_Store _d; \
1.16 anton 132: _d.t_ = (d_); \
1.1 anton 133: (lo) = _d.cells.low; \
134: (hi) = _d.cells.high; \
135: })
136:
1.28 anton 137: #define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
138: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
1.1 anton 139:
1.28 anton 140: #define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
141: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
1.1 anton 142:
143: typedef Label *Xt;
144:
145: /* PFA gives the parameter field address corresponding to a cfa */
146: #define PFA(cfa) (((Cell *)cfa)+2)
147: /* PFA1 is a special version for use just after a NEXT1 */
148: #define PFA1(cfa) PFA(cfa)
149: /* CODE_ADDRESS is the address of the code jumped to through the code field */
150: #define CODE_ADDRESS(cfa) (*(Xt)(cfa))
151:
152: /* DOES_CODE is the Forth code does jumps to */
153: #if !defined(DOUBLY_INDIRECT)
154: # define DOES_CA (symbols[DODOES])
155: #else /* defined(DOUBLY_INDIRECT) */
1.24 anton 156: # define DOES_CA ((Label)&xts[DODOES])
1.1 anton 157: #endif /* defined(DOUBLY_INDIRECT) */
158:
159:
160:
161: #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
162: /* MAKE_CF creates an appropriate code field at the cfa;
163: ca is the code address */
164: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
165: /* make a code field for a defining-word-defined word */
166: #define MAKE_DOES_CF(cfa,does_code) ({MAKE_CF(cfa,DOES_CA); \
167: ((Cell *)cfa)[1] = (Cell)(does_code);})
168:
1.29 anton 169: #ifdef GFORTH_DEBUGGING
1.30 anton 170: #define NAME(string) { saved_ip=ip; asm(""); }
171: /* the asm here is to avoid reordering of following stuff above the
172: assignment; this is an old-style asm (no operands), and therefore
173: is treated like "asm volatile ..."; i.e., it prevents most
174: reorderings across itself. We want the assignment above first,
175: because the stack loads may already cause a stack underflow. */
1.29 anton 176: #elif DEBUG
1.1 anton 177: # define NAME(string) fprintf(stderr,"%08lx: "string"\n",(Cell)ip);
178: #else
179: # define NAME(string)
180: #endif
181:
182: #define CF(const) (-const-2)
183:
184: #define CF_NIL -1
185:
186: #ifndef FLUSH_ICACHE
187: #warning flush-icache probably will not work (see manual)
188: # define FLUSH_ICACHE(addr,size)
1.45 anton 189: #warning no FLUSH_ICACHE, turning off dynamic native code by default
190: #undef NO_DYNAMIC_DEFAULT
191: #define NO_DYNAMIC_DEFAULT 1
1.1 anton 192: #endif
193:
194: #ifdef USE_TOS
1.14 anton 195: #define IF_spTOS(x) x
1.1 anton 196: #else
1.14 anton 197: #define IF_spTOS(x)
198: #define spTOS (sp[0])
1.1 anton 199: #endif
200:
201: #ifdef USE_FTOS
1.14 anton 202: #define IF_fpTOS(x) x
1.1 anton 203: #else
1.14 anton 204: #define IF_fpTOS(x)
205: #define fpTOS (fp[0])
1.1 anton 206: #endif
207:
1.15 anton 208: #define IF_rpTOS(x)
209: #define rpTOS (rp[0])
210:
1.10 anton 211: typedef struct {
212: Address base; /* base address of image (0 if relocatable) */
213: UCell checksum; /* checksum of ca's to protect against some
214: incompatible binary/executable combinations
215: (0 if relocatable) */
216: UCell image_size; /* all sizes in bytes */
217: UCell dict_size;
218: UCell data_stack_size;
219: UCell fp_stack_size;
220: UCell return_stack_size;
221: UCell locals_stack_size;
222: Xt *boot_entry; /* initial ip for booting (in BOOT) */
223: Xt *throw_entry; /* ip after signal (in THROW) */
224: Cell unused1; /* possibly tib stack size */
1.24 anton 225: Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
1.10 anton 226: Address data_stack_base; /* this and the following fields are initialized by the loader */
227: Address fp_stack_base;
228: Address return_stack_base;
229: Address locals_stack_base;
230: } ImageHeader;
231: /* the image-header is created in main.fs */
232:
1.48 ! anton 233: struct Longname {
! 234: struct Longname *next; /* the link field for old hands */
! 235: Cell countetc;
! 236: char name[0];
! 237: };
! 238:
! 239: #define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3))
! 240:
! 241: struct Cellpair {
! 242: Cell n1;
! 243: Cell n2;
! 244: };
! 245:
! 246: struct Cellquad {
! 247: Cell n1;
! 248: Cell n2;
! 249: Cell n3;
! 250: Cell n4;
! 251: };
! 252:
1.1 anton 253: Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
1.42 anton 254: Label *engine2(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
255: Label *engine3(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
1.48 ! anton 256:
! 257: /* engine/prim support routines */
1.1 anton 258: Address my_alloc(Cell size);
1.35 anton 259: char *cstr(Char *from, UCell size, int clear);
1.11 anton 260: char *tilde_cstr(Char *from, UCell size, int clear);
1.35 anton 261: DCell timeval2us(struct timeval *tvp);
1.48 ! anton 262: void cmove(Char *c_from, Char *c_to, UCell u);
! 263: void cmove_up(Char *c_from, Char *c_to, UCell u);
! 264: Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
! 265: struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
! 266: struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
! 267: struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
! 268: UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
! 269: struct Cellpair parse_white(Char *c_addr1, UCell u1);
! 270: Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
! 271: struct Cellquad read_line(Char *c_addr, UCell u1, Cell wfileid);
! 272: struct Cellpair file_status(Char *c_addr, UCell u);
! 273: Cell to_float(Char *c_addr, UCell u, Float *rp);
! 274: Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
! 275: void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
1.1 anton 276:
277: /* dblsub routines */
278: DCell dnegate(DCell d1);
279: UDCell ummul (UCell a, UCell b);
280: DCell mmul (Cell a, Cell b);
281: UDCell umdiv (UDCell u, UCell v);
282: DCell smdiv (DCell num, Cell denom);
283: DCell fmdiv (DCell num, Cell denom);
284:
1.7 pazsan 285: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
1.1 anton 286:
1.18 anton 287: void vm_print_profile(FILE *file);
288: void vm_count_block(Xt *ip);
1.17 anton 289:
1.22 anton 290: /* dynamic superinstruction stuff */
291: Label compile_prim(Label prim);
1.33 anton 292: void compile_prim1(Cell *start);
293: void finish_code(void);
1.34 anton 294: int forget_dyncode(Address code);
295: Label decompile_code(Label prim);
1.17 anton 296:
1.1 anton 297: extern int offset_image;
1.5 anton 298: extern int die_on_signal;
1.10 anton 299: extern UCell pagesize;
300: extern ImageHeader *gforth_header;
1.19 anton 301: extern Label *vm_prims;
1.24 anton 302: extern Label *xts;
1.25 anton 303: extern Cell npriminfos;
1.2 pazsan 304:
1.31 anton 305: #ifdef HAS_DEBUG
306: extern int debug;
307: #else
308: # define debug 0
309: #endif
310:
1.35 anton 311: extern Cell *SP;
312: extern Float *FP;
313: extern Address UP;
314:
1.9 anton 315: #ifdef GFORTH_DEBUGGING
1.29 anton 316: extern Xt *saved_ip;
1.9 anton 317: extern Cell *rp;
1.35 anton 318: #endif
319:
320: #ifdef NO_IP
321: extern Label next_code;
322: #endif
323:
324: #ifdef HAS_FILE
325: extern char* fileattr[6];
326: extern char* pfileattr[6];
327: extern int ufileattr[6];
1.9 anton 328: #endif
329:
1.27 anton 330: #ifdef PRINT_SUPER_LENGTHS
331: Cell prim_length(Cell prim);
332: void print_super_lengths();
333: #endif
1.9 anton 334:
1.2 pazsan 335: /* declare all the functions that are missing */
336: #ifndef HAVE_ATANH
337: extern double atanh(double r1);
338: extern double asinh(double r1);
339: extern double acosh(double r1);
340: #endif
341: #ifndef HAVE_ECVT
1.4 anton 342: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
1.2 pazsan 343: #endif
344: #ifndef HAVE_MEMMOVE
1.3 anton 345: /* extern char *memmove(char *dest, const char *src, long n); */
1.2 pazsan 346: #endif
347: #ifndef HAVE_POW10
348: extern double pow10(double x);
349: #endif
350: #ifndef HAVE_STRERROR
351: extern char *strerror(int err);
352: #endif
353: #ifndef HAVE_STRSIGNAL
354: extern char *strsignal(int sig);
355: #endif
356: #ifndef HAVE_STRTOUL
1.3 anton 357: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
1.2 pazsan 358: #endif
359:
360:
1.37 pazsan 361: #define GROUP(x, n)
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