1: /* common header file
2:
3: Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 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: /* C interface data types */
102:
103: typedef WYDE_TYPE Wyde;
104: typedef TETRABYTE_TYPE Tetrabyte;
105: typedef unsigned WYDE_TYPE UWyde;
106: typedef unsigned TETRABYTE_TYPE UTetrabyte;
107:
108: /* Forth data types */
109: /* Cell and UCell must be the same size as a pointer */
110: #define CELL_BITS (sizeof(Cell) * CHAR_BIT)
111: #define FLAG(b) (-(b))
112: #define FILEIO(error) (FLAG(error) & -37)
113: #define FILEEXIST(error) (FLAG(error) & -38)
114:
115: #define F_TRUE (FLAG(0==0))
116: #define F_FALSE (FLAG(0!=0))
117:
118: /* define this false if you want native division */
119: #ifdef FORCE_CDIV
120: #define FLOORED_DIV 0
121: #else
122: #define FLOORED_DIV ((1%-3)>0)
123: #endif
124:
125: #ifdef BUGGY_LONG_LONG
126:
127: #define BUGGY_LL_CMP /* compares not possible */
128: #define BUGGY_LL_MUL /* multiplication not possible */
129: #define BUGGY_LL_DIV /* division not possible */
130: #define BUGGY_LL_ADD /* addition not possible */
131: #define BUGGY_LL_SHIFT /* shift not possible */
132: #define BUGGY_LL_D2F /* to float not possible */
133: #define BUGGY_LL_F2D /* from float not possible */
134: #define BUGGY_LL_SIZE /* long long "too short", so we use something else */
135:
136: typedef struct {
137: Cell hi;
138: UCell lo;
139: } DCell;
140:
141: typedef struct {
142: UCell hi;
143: UCell lo;
144: } UDCell;
145:
146: #define DHI(x) (x).hi
147: #define DLO(x) (x).lo
148: #define DHI_IS(x,y) (x).hi=(y)
149: #define DLO_IS(x,y) (x).lo=(y)
150:
151: #if SMALL_OFF_T
152: #define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
153: #define UD2OFF(ud) ((ud).lo)
154: #else /* !SMALL_OFF_T */
155: #define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
156: #define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
157: #endif /* !SMALL_OFF_T */
158: #define DZERO ((DCell){0,0})
159:
160: #else /* ! defined(BUGGY_LONG_LONG) */
161:
162: /* DCell and UDCell must be twice as large as Cell */
163: typedef DOUBLE_CELL_TYPE DCell;
164: typedef DOUBLE_UCELL_TYPE UDCell;
165:
166: #define OFF2UD(o) ((UDCell)(o))
167: #define UD2OFF(ud) ((off_t)(ud))
168: #define DZERO ((DCell)0)
169:
170: #endif /* ! defined(BUGGY_LONG_LONG) */
171:
172: typedef union {
173: struct {
174: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
175: Cell high;
176: UCell low;
177: #else
178: UCell low;
179: Cell high;
180: #endif
181: } cells;
182: DCell d;
183: UDCell ud;
184: } Double_Store;
185:
186: #ifndef BUGGY_LONG_LONG
187: #define DHI(x) ({ Double_Store _d; _d.d=(x); _d.cells.high; })
188: #define DLO(x) ({ Double_Store _d; _d.d=(x); _d.cells.low; })
189:
190: /* beware with the assignment: x is referenced twice! */
191: #define DHI_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.high=(y); (x)=_d; })
192: #define DLO_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.low =(y); (x)=_d; })
193: #endif
194:
195: #define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
196: Double_Store _d; \
197: _d.cells.low = (lo); \
198: _d.cells.high = (hi); \
199: (d_) = _d.t_; \
200: })
201:
202: #define STORE_DCELL_T(d_,lo,hi,t_) ({ \
203: Double_Store _d; \
204: _d.t_ = (d_); \
205: (lo) = _d.cells.low; \
206: (hi) = _d.cells.high; \
207: })
208:
209: #define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
210: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
211:
212: #define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
213: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
214:
215: typedef Label *Xt;
216:
217: /* PFA gives the parameter field address corresponding to a cfa */
218: #define PFA(cfa) (((Cell *)cfa)+2)
219: /* PFA1 is a special version for use just after a NEXT1 */
220: #define PFA1(cfa) PFA(cfa)
221: /* CODE_ADDRESS is the address of the code jumped to through the code field */
222: #define CODE_ADDRESS(cfa) (*(Xt)(cfa))
223:
224: /* DOES_CODE is the Forth code does jumps to */
225: #if !defined(DOUBLY_INDIRECT)
226: # define DOES_CA (symbols[DODOES])
227: #else /* defined(DOUBLY_INDIRECT) */
228: # define DOES_CA ((Label)&xts[DODOES])
229: #endif /* defined(DOUBLY_INDIRECT) */
230:
231:
232:
233: #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
234: /* MAKE_CF creates an appropriate code field at the cfa;
235: ca is the code address */
236: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
237: /* make a code field for a defining-word-defined word */
238: #define MAKE_DOES_CF(cfa,does_code) ({MAKE_CF(cfa,DOES_CA); \
239: ((Cell *)cfa)[1] = (Cell)(does_code);})
240:
241: #define CF(const) (-const-2)
242:
243: #define CF_NIL -1
244:
245: #ifndef FLUSH_ICACHE
246: #warning flush-icache probably will not work (see manual)
247: # define FLUSH_ICACHE(addr,size)
248: #warning no FLUSH_ICACHE, turning off dynamic native code by default
249: #undef NO_DYNAMIC_DEFAULT
250: #define NO_DYNAMIC_DEFAULT 1
251: #endif
252:
253: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
254: #define STACK_CACHE_DEFAULT 0
255: #else
256: #define STACK_CACHE_DEFAULT STACK_CACHE_DEFAULT_FAST
257: #endif
258:
259: #ifdef USE_FTOS
260: #define IF_fpTOS(x) x
261: #else
262: #define IF_fpTOS(x)
263: #define fpTOS (fp[0])
264: #endif
265:
266: #define IF_rpTOS(x)
267: #define rpTOS (rp[0])
268:
269: typedef struct {
270: Address base; /* base address of image (0 if relocatable) */
271: UCell checksum; /* checksum of ca's to protect against some
272: incompatible binary/executable combinations
273: (0 if relocatable) */
274: UCell image_size; /* all sizes in bytes */
275: UCell dict_size;
276: UCell data_stack_size;
277: UCell fp_stack_size;
278: UCell return_stack_size;
279: UCell locals_stack_size;
280: Xt *boot_entry; /* initial ip for booting (in BOOT) */
281: Xt *throw_entry; /* ip after signal (in THROW) */
282: Cell unused1; /* possibly tib stack size */
283: Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
284: Address data_stack_base; /* this and the following fields are initialized by the loader */
285: Address fp_stack_base;
286: Address return_stack_base;
287: Address locals_stack_base;
288: } ImageHeader;
289: /* the image-header is created in main.fs */
290:
291: struct Longname {
292: struct Longname *next; /* the link field for old hands */
293: Cell countetc;
294: char name[0];
295: };
296:
297: #define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3))
298:
299: struct Cellpair {
300: Cell n1;
301: Cell n2;
302: };
303:
304: struct Cellquad {
305: Cell n1;
306: Cell n2;
307: Cell n3;
308: Cell n4;
309: };
310:
311: #define IOR(flag) ((flag)? -512-errno : 0)
312:
313: Label *gforth_engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
314: Label *gforth_engine2(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
315: Label *gforth_engine3(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
316:
317: /* engine/prim support routines */
318: Address gforth_alloc(Cell size);
319: char *cstr(Char *from, UCell size, int clear);
320: char *tilde_cstr(Char *from, UCell size, int clear);
321: DCell timeval2us(struct timeval *tvp);
322: void cmove(Char *c_from, Char *c_to, UCell u);
323: void cmove_up(Char *c_from, Char *c_to, UCell u);
324: Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
325: struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
326: struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
327: struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
328: UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
329: struct Cellpair parse_white(Char *c_addr1, UCell u1);
330: Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
331: struct Cellquad read_line(Char *c_addr, UCell u1, Cell wfileid);
332: struct Cellpair file_status(Char *c_addr, UCell u);
333: Cell to_float(Char *c_addr, UCell u, Float *rp);
334: Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
335: void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
336: UCell lshift(UCell u1, UCell n);
337: UCell rshift(UCell u1, UCell n);
338: int gforth_system(Char *c_addr, UCell u);
339: Cell capscompare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
340:
341: /* signal handler stuff */
342: void install_signal_handlers(void);
343: typedef void Sigfunc(int);
344: Sigfunc *bsd_signal(int signo, Sigfunc *func);
345:
346: /* dblsub routines */
347: DCell dnegate(DCell d1);
348: UDCell ummul (UCell a, UCell b);
349: DCell mmul (Cell a, Cell b);
350: UDCell umdiv (UDCell u, UCell v);
351: DCell smdiv (DCell num, Cell denom);
352: DCell fmdiv (DCell num, Cell denom);
353:
354: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
355:
356: void vm_print_profile(FILE *file);
357: void vm_count_block(Xt *ip);
358:
359: /* dynamic superinstruction stuff */
360: void compile_prim1(Cell *start);
361: void finish_code(void);
362: int forget_dyncode(Address code);
363: Label decompile_code(Label prim);
364:
365: extern int offset_image;
366: extern int die_on_signal;
367: extern UCell pagesize;
368: extern ImageHeader *gforth_header;
369: extern Label *vm_prims;
370: extern Label *xts;
371: extern Cell npriminfos;
372:
373: #ifdef HAS_DEBUG
374: extern int debug;
375: #else
376: # define debug 0
377: #endif
378:
379: extern Cell *gforth_SP;
380: extern Float *gforth_FP;
381: extern Address gforth_UP;
382:
383: #ifdef HAS_FFCALL
384: extern Cell *gforth_RP;
385: extern Address gforth_LP;
386: extern void gforth_callback(Xt* fcall, void * alist);
387: #endif
388:
389: #ifdef HAS_LIBFFI
390: extern Cell *gforth_RP;
391: extern Address gforth_LP;
392: #include <ffi.h>
393: extern void gforth_callback(ffi_cif * cif, void * resp, void ** args, void * ip);
394: #endif
395:
396: #ifdef GFORTH_DEBUGGING
397: extern Xt *saved_ip;
398: extern Cell *rp;
399: #endif
400:
401: #ifdef NO_IP
402: extern Label next_code;
403: #endif
404:
405: #ifdef HAS_FILE
406: extern char* fileattr[6];
407: extern char* pfileattr[6];
408: extern int ufileattr[6];
409: #endif
410:
411: #ifdef PRINT_SUPER_LENGTHS
412: Cell prim_length(Cell prim);
413: void print_super_lengths();
414: #endif
415:
416: /* declare all the functions that are missing */
417: #ifndef HAVE_ATANH
418: extern double atanh(double r1);
419: extern double asinh(double r1);
420: extern double acosh(double r1);
421: #endif
422: #ifndef HAVE_ECVT
423: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
424: #endif
425: #ifndef HAVE_MEMMOVE
426: /* extern char *memmove(char *dest, const char *src, long n); */
427: #endif
428: #ifndef HAVE_POW10
429: extern double pow10(double x);
430: #endif
431: #ifndef HAVE_STRERROR
432: extern char *strerror(int err);
433: #endif
434: #ifndef HAVE_STRSIGNAL
435: extern char *strsignal(int sig);
436: #endif
437: #ifndef HAVE_STRTOUL
438: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
439: #endif
440:
441:
442: #define GROUP(x, n)
443: #define GROUPADD(n)
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