1: /* common header file
2:
3: Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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: #include "config.h"
23: #include <stdio.h>
24: #include <sys/time.h>
25: #include <unistd.h>
26:
27: #if defined(DOUBLY_INDIRECT)||defined(INDIRECT_THREADED)||defined(VM_PROFILING)
28: #define NO_DYNAMIC
29: #endif
30:
31: #if defined(DOUBLY_INDIRECT)
32: # undef DIRECT_THREADED
33: # undef INDIRECT_THREADED
34: # define INDIRECT_THREADED
35: #endif
36:
37: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
38: # undef USE_TOS
39: # undef USE_FTOS
40: # undef USE_NO_TOS
41: # undef USE_NO_FTOS
42: # define USE_NO_TOS
43: # define USE_NO_FTOS
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"
53: /* #define PROFILE_I "profile.i" */
54:
55: #else
56: /* gforth-fast or gforth-native */
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
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"
72: /* profile.c uses profile.i but does not define VM_PROFILING */
73: /* #define PROFILE_I "profile-fast.i" */
74:
75: #endif
76:
77:
78:
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:
99: #include "machine.h"
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:
111: #ifdef BUGGY_LONG_LONG
112:
113: #define BUGGY_LL_CMP /* compares not possible */
114: #define BUGGY_LL_MUL /* multiplication not possible */
115: #define BUGGY_LL_DIV /* division not possible */
116: #define BUGGY_LL_ADD /* addition not possible */
117: #define BUGGY_LL_SHIFT /* shift not possible */
118: #define BUGGY_LL_D2F /* to float not possible */
119: #define BUGGY_LL_F2D /* from float not possible */
120: #define BUGGY_LL_SIZE /* long long "too short", so we use something else */
121:
122: typedef struct {
123: Cell hi;
124: UCell lo;
125: } DCell;
126:
127: typedef struct {
128: UCell hi;
129: UCell lo;
130: } UDCell;
131:
132: #define DHI(x) (x).hi
133: #define DLO(x) (x).lo
134: #define DHI_IS(x,y) (x).hi=(y)
135: #define DLO_IS(x,y) (x).lo=(y)
136:
137: #if SMALL_OFF_T
138: #define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
139: #define UD2OFF(ud) ((ud).lo)
140: #else /* !SMALL_OFF_T */
141: #define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
142: #define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
143: #endif /* !SMALL_OFF_T */
144: #define DZERO ((DCell){0,0})
145:
146: #else /* ! defined(BUGGY_LONG_LONG) */
147:
148: /* DCell and UDCell must be twice as large as Cell */
149: typedef DOUBLE_CELL_TYPE DCell;
150: typedef DOUBLE_UCELL_TYPE UDCell;
151:
152: #define OFF2UD(o) ((UDCell)(o))
153: #define UD2OFF(ud) ((off_t)(ud))
154: #define DZERO ((DCell)0)
155:
156: #endif /* ! defined(BUGGY_LONG_LONG) */
157:
158: typedef union {
159: struct {
160: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
161: Cell high;
162: UCell low;
163: #else
164: UCell low;
165: Cell high;
166: #endif
167: } cells;
168: DCell d;
169: UDCell ud;
170: } Double_Store;
171:
172: #ifndef BUGGY_LONG_LONG
173: #define DHI(x) ({ Double_Store _d; _d.d=(x); _d.cells.high; })
174: #define DLO(x) ({ Double_Store _d; _d.d=(x); _d.cells.low; })
175:
176: /* beware with the assignment: x is referenced twice! */
177: #define DHI_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.high=(y); (x)=_d; })
178: #define DLO_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.low =(y); (x)=_d; })
179: #endif
180:
181: #define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
182: Double_Store _d; \
183: _d.cells.low = (lo); \
184: _d.cells.high = (hi); \
185: (d_) = _d.t_; \
186: })
187:
188: #define STORE_DCELL_T(d_,lo,hi,t_) ({ \
189: Double_Store _d; \
190: _d.t_ = (d_); \
191: (lo) = _d.cells.low; \
192: (hi) = _d.cells.high; \
193: })
194:
195: #define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
196: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
197:
198: #define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
199: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
200:
201: typedef Label *Xt;
202:
203: /* PFA gives the parameter field address corresponding to a cfa */
204: #define PFA(cfa) (((Cell *)cfa)+2)
205: /* PFA1 is a special version for use just after a NEXT1 */
206: #define PFA1(cfa) PFA(cfa)
207: /* CODE_ADDRESS is the address of the code jumped to through the code field */
208: #define CODE_ADDRESS(cfa) (*(Xt)(cfa))
209:
210: /* DOES_CODE is the Forth code does jumps to */
211: #if !defined(DOUBLY_INDIRECT)
212: # define DOES_CA (symbols[DODOES])
213: #else /* defined(DOUBLY_INDIRECT) */
214: # define DOES_CA ((Label)&xts[DODOES])
215: #endif /* defined(DOUBLY_INDIRECT) */
216:
217:
218:
219: #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
220: /* MAKE_CF creates an appropriate code field at the cfa;
221: ca is the code address */
222: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
223: /* make a code field for a defining-word-defined word */
224: #define MAKE_DOES_CF(cfa,does_code) ({MAKE_CF(cfa,DOES_CA); \
225: ((Cell *)cfa)[1] = (Cell)(does_code);})
226:
227: #define CF(const) (-const-2)
228:
229: #define CF_NIL -1
230:
231: #ifndef FLUSH_ICACHE
232: #warning flush-icache probably will not work (see manual)
233: # define FLUSH_ICACHE(addr,size)
234: #warning no FLUSH_ICACHE, turning off dynamic native code by default
235: #undef NO_DYNAMIC_DEFAULT
236: #define NO_DYNAMIC_DEFAULT 1
237: #endif
238:
239: #ifdef USE_TOS
240: #define IF_spTOS(x) x
241: #else
242: #define IF_spTOS(x)
243: #define spTOS (sp[0])
244: #endif
245:
246: #ifdef USE_FTOS
247: #define IF_fpTOS(x) x
248: #else
249: #define IF_fpTOS(x)
250: #define fpTOS (fp[0])
251: #endif
252:
253: #define IF_rpTOS(x)
254: #define rpTOS (rp[0])
255:
256: typedef struct {
257: Address base; /* base address of image (0 if relocatable) */
258: UCell checksum; /* checksum of ca's to protect against some
259: incompatible binary/executable combinations
260: (0 if relocatable) */
261: UCell image_size; /* all sizes in bytes */
262: UCell dict_size;
263: UCell data_stack_size;
264: UCell fp_stack_size;
265: UCell return_stack_size;
266: UCell locals_stack_size;
267: Xt *boot_entry; /* initial ip for booting (in BOOT) */
268: Xt *throw_entry; /* ip after signal (in THROW) */
269: Cell unused1; /* possibly tib stack size */
270: Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
271: Address data_stack_base; /* this and the following fields are initialized by the loader */
272: Address fp_stack_base;
273: Address return_stack_base;
274: Address locals_stack_base;
275: } ImageHeader;
276: /* the image-header is created in main.fs */
277:
278: struct Longname {
279: struct Longname *next; /* the link field for old hands */
280: Cell countetc;
281: char name[0];
282: };
283:
284: #define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3))
285:
286: struct Cellpair {
287: Cell n1;
288: Cell n2;
289: };
290:
291: struct Cellquad {
292: Cell n1;
293: Cell n2;
294: Cell n3;
295: Cell n4;
296: };
297:
298: #define IOR(flag) ((flag)? -512-errno : 0)
299:
300: Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
301: Label *engine2(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
302: Label *engine3(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
303:
304: /* engine/prim support routines */
305: Address my_alloc(Cell size);
306: char *cstr(Char *from, UCell size, int clear);
307: char *tilde_cstr(Char *from, UCell size, int clear);
308: DCell timeval2us(struct timeval *tvp);
309: void cmove(Char *c_from, Char *c_to, UCell u);
310: void cmove_up(Char *c_from, Char *c_to, UCell u);
311: Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
312: struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
313: struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
314: struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
315: UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
316: struct Cellpair parse_white(Char *c_addr1, UCell u1);
317: Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
318: struct Cellquad read_line(Char *c_addr, UCell u1, Cell wfileid);
319: struct Cellpair file_status(Char *c_addr, UCell u);
320: Cell to_float(Char *c_addr, UCell u, Float *rp);
321: Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
322: void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
323: UCell lshift(UCell u1, UCell n);
324: UCell rshift(UCell u1, UCell n);
325: int gforth_system(Char *c_addr, UCell u);
326:
327:
328: /* signal handler stuff */
329: void install_signal_handlers(void);
330: typedef void Sigfunc(int);
331: Sigfunc *bsd_signal(int signo, Sigfunc *func);
332:
333: /* dblsub routines */
334: DCell dnegate(DCell d1);
335: UDCell ummul (UCell a, UCell b);
336: DCell mmul (Cell a, Cell b);
337: UDCell umdiv (UDCell u, UCell v);
338: DCell smdiv (DCell num, Cell denom);
339: DCell fmdiv (DCell num, Cell denom);
340:
341: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
342:
343: void vm_print_profile(FILE *file);
344: void vm_count_block(Xt *ip);
345:
346: /* dynamic superinstruction stuff */
347: void compile_prim1(Cell *start);
348: void finish_code(void);
349: int forget_dyncode(Address code);
350: Label decompile_code(Label prim);
351:
352: extern int offset_image;
353: extern int die_on_signal;
354: extern UCell pagesize;
355: extern ImageHeader *gforth_header;
356: extern Label *vm_prims;
357: extern Label *xts;
358: extern Cell npriminfos;
359:
360: #ifdef HAS_DEBUG
361: extern int debug;
362: #else
363: # define debug 0
364: #endif
365:
366: extern Cell *SP;
367: extern Float *FP;
368: extern Address UP;
369:
370: #ifdef HAS_FFCALL
371: extern Cell *RP;
372: extern Address LP;
373: extern void engine_callback(Xt* fcall, void * alist);
374: #endif
375:
376: #ifdef GFORTH_DEBUGGING
377: extern Xt *saved_ip;
378: extern Cell *rp;
379: #endif
380:
381: #ifdef NO_IP
382: extern Label next_code;
383: #endif
384:
385: #ifdef HAS_FILE
386: extern char* fileattr[6];
387: extern char* pfileattr[6];
388: extern int ufileattr[6];
389: #endif
390:
391: #ifdef PRINT_SUPER_LENGTHS
392: Cell prim_length(Cell prim);
393: void print_super_lengths();
394: #endif
395:
396: /* declare all the functions that are missing */
397: #ifndef HAVE_ATANH
398: extern double atanh(double r1);
399: extern double asinh(double r1);
400: extern double acosh(double r1);
401: #endif
402: #ifndef HAVE_ECVT
403: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
404: #endif
405: #ifndef HAVE_MEMMOVE
406: /* extern char *memmove(char *dest, const char *src, long n); */
407: #endif
408: #ifndef HAVE_POW10
409: extern double pow10(double x);
410: #endif
411: #ifndef HAVE_STRERROR
412: extern char *strerror(int err);
413: #endif
414: #ifndef HAVE_STRSIGNAL
415: extern char *strsignal(int sig);
416: #endif
417: #ifndef HAVE_STRTOUL
418: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
419: #endif
420:
421:
422: #define GROUP(x, n)
423: #define GROUPADD(n)
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