Annotation of gforth/engine/forth.h, revision 1.65
1.1 anton 1: /* common header file
2:
1.62 anton 3: Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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:
1.57 anton 37: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
1.23 anton 38: # undef USE_TOS
39: # undef USE_FTOS
1.56 anton 40: # undef USE_NO_TOS
41: # undef USE_NO_FTOS
1.23 anton 42: # define USE_NO_TOS
43: # define USE_NO_FTOS
1.57 anton 44:
45: #define PRIM_I "prim.i"
46: #define PRIM_LAB_I "prim_lab.i"
47: #define PRIM_NAMES_I "prim_names.i"
48: #define PRIM_SUPEREND_I "prim_superend.i"
49: #define PRIM_NUM_I "prim_num.i"
50: #define PRIM_GRP_I "prim_grp.i"
51: #define COSTS_I "costs.i"
52: #define SUPER2_I "super2.i"
1.58 anton 53: /* #define PROFILE_I "profile.i" */
1.57 anton 54:
55: #else
56: /* gforth-fast or gforth-native */
1.59 anton 57: # undef USE_TOS
58: # undef USE_FTOS
59: # undef USE_NO_TOS
60: # undef USE_NO_FTOS
61: # define USE_TOS
62: # define USE_NO_FTOS
1.57 anton 63:
64: #define PRIM_I "prim-fast.i"
65: #define PRIM_LAB_I "prim_lab-fast.i"
66: #define PRIM_NAMES_I "prim_names-fast.i"
67: #define PRIM_SUPEREND_I "prim_superend-fast.i"
68: #define PRIM_NUM_I "prim_num-fast.i"
69: #define PRIM_GRP_I "prim_grp-fast.i"
70: #define COSTS_I "costs-fast.i"
71: #define SUPER2_I "super2-fast.i"
1.58 anton 72: /* profile.c uses profile.i but does not define VM_PROFILING */
73: /* #define PROFILE_I "profile-fast.i" */
1.57 anton 74:
1.23 anton 75: #endif
1.57 anton 76:
77:
1.23 anton 78:
1.1 anton 79: #include <limits.h>
80:
81: #if defined(NeXT)
82: # include <libc.h>
83: #endif /* NeXT */
84:
85: /* symbol indexed constants */
86:
87: #define DOCOL 0
88: #define DOCON 1
89: #define DOVAR 2
90: #define DOUSER 3
91: #define DODEFER 4
92: #define DOFIELD 5
93: #define DODOES 6
94: #define DOESJUMP 7
95:
96: /* the size of the DOESJUMP, which resides between DOES> and the does-code */
97: #define DOES_HANDLER_SIZE (2*sizeof(Cell))
98:
1.6 jwilke 99: #include "machine.h"
1.1 anton 100:
101: /* Forth data types */
102: /* Cell and UCell must be the same size as a pointer */
103: #define CELL_BITS (sizeof(Cell) * CHAR_BIT)
104: #define FLAG(b) (-(b))
105: #define FILEIO(error) (FLAG(error) & -37)
106: #define FILEEXIST(error) (FLAG(error) & -38)
107:
108: #define F_TRUE (FLAG(0==0))
109: #define F_FALSE (FLAG(0!=0))
110:
1.65 ! pazsan 111: /* define this false if you want native division */
! 112: #define FLOORED_DIV ((1%-3)>0)
! 113:
1.1 anton 114: #ifdef BUGGY_LONG_LONG
1.64 pazsan 115:
116: #define BUGGY_LL_CMP /* compares not possible */
117: #define BUGGY_LL_MUL /* multiplication not possible */
118: #define BUGGY_LL_DIV /* division not possible */
119: #define BUGGY_LL_ADD /* addition not possible */
120: #define BUGGY_LL_SHIFT /* shift not possible */
121: #define BUGGY_LL_D2F /* to float not possible */
122: #define BUGGY_LL_F2D /* from float not possible */
123: #define BUGGY_LL_SIZE /* long long "too short", so we use something else */
124:
1.1 anton 125: typedef struct {
126: Cell hi;
127: UCell lo;
128: } DCell;
129:
130: typedef struct {
131: UCell hi;
132: UCell lo;
133: } UDCell;
134:
1.64 pazsan 135: #define DHI(x) (x).hi
136: #define DLO(x) (x).lo
137: #define DHI_IS(x,y) (x).hi=(y)
138: #define DLO_IS(x,y) (x).lo=(y)
139:
1.39 anton 140: #if SMALL_OFF_T
141: #define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
142: #define UD2OFF(ud) ((ud).lo)
143: #else /* !SMALL_OFF_T */
144: #define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
1.36 anton 145: #define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
1.39 anton 146: #endif /* !SMALL_OFF_T */
1.1 anton 147: #define DZERO ((DCell){0,0})
148:
149: #else /* ! defined(BUGGY_LONG_LONG) */
150:
151: /* DCell and UDCell must be twice as large as Cell */
152: typedef DOUBLE_CELL_TYPE DCell;
1.63 pazsan 153: typedef DOUBLE_UCELL_TYPE UDCell;
1.1 anton 154:
1.36 anton 155: #define OFF2UD(o) ((UDCell)(o))
156: #define UD2OFF(ud) ((off_t)(ud))
1.16 anton 157: #define DZERO ((DCell)0)
158:
159: #endif /* ! defined(BUGGY_LONG_LONG) */
160:
1.1 anton 161: typedef union {
162: struct {
1.16 anton 163: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
1.1 anton 164: Cell high;
165: UCell low;
166: #else
167: UCell low;
168: Cell high;
1.20 crook 169: #endif
1.1 anton 170: } cells;
1.16 anton 171: DCell d;
172: UDCell ud;
1.1 anton 173: } Double_Store;
1.64 pazsan 174:
175: #ifndef BUGGY_LONG_LONG
176: #define DHI(x) ({ Double_Store _d; _d.d=(x); _d.cells.high; })
177: #define DLO(x) ({ Double_Store _d; _d.d=(x); _d.cells.low; })
178:
179: /* beware with the assignment: x is referenced twice! */
180: #define DHI_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.high=(y); (x)=_d; })
181: #define DLO_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.low =(y); (x)=_d; })
182: #endif
1.1 anton 183:
1.16 anton 184: #define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
1.1 anton 185: Double_Store _d; \
186: _d.cells.low = (lo); \
187: _d.cells.high = (hi); \
1.16 anton 188: (d_) = _d.t_; \
1.1 anton 189: })
190:
1.16 anton 191: #define STORE_DCELL_T(d_,lo,hi,t_) ({ \
1.1 anton 192: Double_Store _d; \
1.16 anton 193: _d.t_ = (d_); \
1.1 anton 194: (lo) = _d.cells.low; \
195: (hi) = _d.cells.high; \
196: })
197:
1.28 anton 198: #define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
199: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
1.1 anton 200:
1.28 anton 201: #define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
202: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
1.1 anton 203:
204: typedef Label *Xt;
205:
206: /* PFA gives the parameter field address corresponding to a cfa */
207: #define PFA(cfa) (((Cell *)cfa)+2)
208: /* PFA1 is a special version for use just after a NEXT1 */
209: #define PFA1(cfa) PFA(cfa)
210: /* CODE_ADDRESS is the address of the code jumped to through the code field */
211: #define CODE_ADDRESS(cfa) (*(Xt)(cfa))
212:
213: /* DOES_CODE is the Forth code does jumps to */
214: #if !defined(DOUBLY_INDIRECT)
215: # define DOES_CA (symbols[DODOES])
216: #else /* defined(DOUBLY_INDIRECT) */
1.24 anton 217: # define DOES_CA ((Label)&xts[DODOES])
1.1 anton 218: #endif /* defined(DOUBLY_INDIRECT) */
219:
220:
221:
222: #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
223: /* MAKE_CF creates an appropriate code field at the cfa;
224: ca is the code address */
225: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
226: /* make a code field for a defining-word-defined word */
227: #define MAKE_DOES_CF(cfa,does_code) ({MAKE_CF(cfa,DOES_CA); \
228: ((Cell *)cfa)[1] = (Cell)(does_code);})
229:
230: #define CF(const) (-const-2)
231:
232: #define CF_NIL -1
233:
234: #ifndef FLUSH_ICACHE
235: #warning flush-icache probably will not work (see manual)
236: # define FLUSH_ICACHE(addr,size)
1.45 anton 237: #warning no FLUSH_ICACHE, turning off dynamic native code by default
238: #undef NO_DYNAMIC_DEFAULT
239: #define NO_DYNAMIC_DEFAULT 1
1.1 anton 240: #endif
241:
242: #ifdef USE_TOS
1.14 anton 243: #define IF_spTOS(x) x
1.1 anton 244: #else
1.14 anton 245: #define IF_spTOS(x)
246: #define spTOS (sp[0])
1.1 anton 247: #endif
248:
249: #ifdef USE_FTOS
1.14 anton 250: #define IF_fpTOS(x) x
1.1 anton 251: #else
1.14 anton 252: #define IF_fpTOS(x)
253: #define fpTOS (fp[0])
1.1 anton 254: #endif
255:
1.15 anton 256: #define IF_rpTOS(x)
257: #define rpTOS (rp[0])
258:
1.10 anton 259: typedef struct {
260: Address base; /* base address of image (0 if relocatable) */
261: UCell checksum; /* checksum of ca's to protect against some
262: incompatible binary/executable combinations
263: (0 if relocatable) */
264: UCell image_size; /* all sizes in bytes */
265: UCell dict_size;
266: UCell data_stack_size;
267: UCell fp_stack_size;
268: UCell return_stack_size;
269: UCell locals_stack_size;
270: Xt *boot_entry; /* initial ip for booting (in BOOT) */
271: Xt *throw_entry; /* ip after signal (in THROW) */
272: Cell unused1; /* possibly tib stack size */
1.24 anton 273: Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
1.10 anton 274: Address data_stack_base; /* this and the following fields are initialized by the loader */
275: Address fp_stack_base;
276: Address return_stack_base;
277: Address locals_stack_base;
278: } ImageHeader;
279: /* the image-header is created in main.fs */
280:
1.48 anton 281: struct Longname {
282: struct Longname *next; /* the link field for old hands */
283: Cell countetc;
284: char name[0];
285: };
286:
287: #define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3))
288:
289: struct Cellpair {
290: Cell n1;
291: Cell n2;
292: };
293:
294: struct Cellquad {
295: Cell n1;
296: Cell n2;
297: Cell n3;
298: Cell n4;
299: };
1.49 anton 300:
301: #define IOR(flag) ((flag)? -512-errno : 0)
1.48 anton 302:
1.1 anton 303: Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
1.42 anton 304: Label *engine2(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
305: Label *engine3(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
1.48 anton 306:
307: /* engine/prim support routines */
1.1 anton 308: Address my_alloc(Cell size);
1.35 anton 309: char *cstr(Char *from, UCell size, int clear);
1.11 anton 310: char *tilde_cstr(Char *from, UCell size, int clear);
1.35 anton 311: DCell timeval2us(struct timeval *tvp);
1.48 anton 312: void cmove(Char *c_from, Char *c_to, UCell u);
313: void cmove_up(Char *c_from, Char *c_to, UCell u);
314: Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
315: struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
316: struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
317: struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
318: UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
319: struct Cellpair parse_white(Char *c_addr1, UCell u1);
320: Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
321: struct Cellquad read_line(Char *c_addr, UCell u1, Cell wfileid);
322: struct Cellpair file_status(Char *c_addr, UCell u);
323: Cell to_float(Char *c_addr, UCell u, Float *rp);
324: Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
325: void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
1.60 pazsan 326: UCell lshift(UCell u1, UCell n);
327: UCell rshift(UCell u1, UCell n);
1.61 anton 328: int gforth_system(Char *c_addr, UCell u);
1.60 pazsan 329:
1.1 anton 330:
1.50 anton 331: /* signal handler stuff */
332: void install_signal_handlers(void);
333: typedef void Sigfunc(int);
334: Sigfunc *bsd_signal(int signo, Sigfunc *func);
335:
1.1 anton 336: /* dblsub routines */
337: DCell dnegate(DCell d1);
338: UDCell ummul (UCell a, UCell b);
339: DCell mmul (Cell a, Cell b);
340: UDCell umdiv (UDCell u, UCell v);
341: DCell smdiv (DCell num, Cell denom);
342: DCell fmdiv (DCell num, Cell denom);
343:
1.7 pazsan 344: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
1.1 anton 345:
1.18 anton 346: void vm_print_profile(FILE *file);
347: void vm_count_block(Xt *ip);
1.17 anton 348:
1.22 anton 349: /* dynamic superinstruction stuff */
1.33 anton 350: void compile_prim1(Cell *start);
351: void finish_code(void);
1.34 anton 352: int forget_dyncode(Address code);
353: Label decompile_code(Label prim);
1.17 anton 354:
1.1 anton 355: extern int offset_image;
1.5 anton 356: extern int die_on_signal;
1.10 anton 357: extern UCell pagesize;
358: extern ImageHeader *gforth_header;
1.19 anton 359: extern Label *vm_prims;
1.24 anton 360: extern Label *xts;
1.25 anton 361: extern Cell npriminfos;
1.2 pazsan 362:
1.31 anton 363: #ifdef HAS_DEBUG
364: extern int debug;
365: #else
366: # define debug 0
367: #endif
368:
1.35 anton 369: extern Cell *SP;
370: extern Float *FP;
371: extern Address UP;
372:
1.53 pazsan 373: #ifdef HAS_FFCALL
374: extern Cell *RP;
375: extern Address LP;
1.54 pazsan 376: extern void engine_callback(Xt* fcall, void * alist);
1.53 pazsan 377: #endif
378:
1.9 anton 379: #ifdef GFORTH_DEBUGGING
1.29 anton 380: extern Xt *saved_ip;
1.9 anton 381: extern Cell *rp;
1.35 anton 382: #endif
383:
384: #ifdef NO_IP
385: extern Label next_code;
386: #endif
387:
388: #ifdef HAS_FILE
389: extern char* fileattr[6];
390: extern char* pfileattr[6];
391: extern int ufileattr[6];
1.9 anton 392: #endif
393:
1.27 anton 394: #ifdef PRINT_SUPER_LENGTHS
395: Cell prim_length(Cell prim);
396: void print_super_lengths();
397: #endif
1.9 anton 398:
1.2 pazsan 399: /* declare all the functions that are missing */
400: #ifndef HAVE_ATANH
401: extern double atanh(double r1);
402: extern double asinh(double r1);
403: extern double acosh(double r1);
404: #endif
405: #ifndef HAVE_ECVT
1.4 anton 406: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
1.2 pazsan 407: #endif
408: #ifndef HAVE_MEMMOVE
1.3 anton 409: /* extern char *memmove(char *dest, const char *src, long n); */
1.2 pazsan 410: #endif
411: #ifndef HAVE_POW10
412: extern double pow10(double x);
413: #endif
414: #ifndef HAVE_STRERROR
415: extern char *strerror(int err);
416: #endif
417: #ifndef HAVE_STRSIGNAL
418: extern char *strsignal(int sig);
419: #endif
420: #ifndef HAVE_STRTOUL
1.3 anton 421: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
1.2 pazsan 422: #endif
423:
424:
1.37 pazsan 425: #define GROUP(x, n)
1.53 pazsan 426: #define GROUPADD(n)
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