1: /* common header file
2:
3: Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009 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 3
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, see http://www.gnu.org/licenses/.
19: */
20:
21: #include "config.h"
22: #include "128bit.h"
23: #include <stdio.h>
24: #include <sys/time.h>
25: #include <unistd.h>
26: #ifndef STANDALONE
27: #if defined(HAVE_LIBLTDL)
28: #include <ltdl.h>
29: #endif
30: #endif
31:
32: #if !defined(FORCE_LL) && !defined(BUGGY_LONG_LONG)
33: #define BUGGY_LONG_LONG
34: #endif
35:
36: #if defined(DOUBLY_INDIRECT)||defined(INDIRECT_THREADED)||defined(VM_PROFILING)
37: #define NO_DYNAMIC
38: #endif
39:
40: #if defined(DOUBLY_INDIRECT)
41: # undef DIRECT_THREADED
42: # undef INDIRECT_THREADED
43: # define INDIRECT_THREADED
44: #endif
45:
46: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
47: # undef USE_TOS
48: # undef USE_FTOS
49: # undef USE_NO_TOS
50: # undef USE_NO_FTOS
51: # define USE_NO_TOS
52: # define USE_NO_FTOS
53:
54: #define PRIM_I "prim.i"
55: #define PRIM_LAB_I "prim_lab.i"
56: #define PRIM_NAMES_I "prim_names.i"
57: #define PRIM_SUPEREND_I "prim_superend.i"
58: #define PRIM_NUM_I "prim_num.i"
59: #define PRIM_GRP_I "prim_grp.i"
60: #define COSTS_I "costs.i"
61: #define SUPER2_I "super2.i"
62: /* #define PROFILE_I "profile.i" */
63:
64: #else
65: /* gforth-fast or gforth-native */
66: # undef USE_TOS
67: # undef USE_FTOS
68: # undef USE_NO_TOS
69: # undef USE_NO_FTOS
70: # define USE_TOS
71:
72: #define PRIM_I "prim-fast.i"
73: #define PRIM_LAB_I "prim_lab-fast.i"
74: #define PRIM_NAMES_I "prim_names-fast.i"
75: #define PRIM_SUPEREND_I "prim_superend-fast.i"
76: #define PRIM_NUM_I "prim_num-fast.i"
77: #define PRIM_GRP_I "prim_grp-fast.i"
78: #define COSTS_I "costs-fast.i"
79: #define SUPER2_I "super2-fast.i"
80: /* profile.c uses profile.i but does not define VM_PROFILING */
81: /* #define PROFILE_I "profile-fast.i" */
82:
83: #endif
84:
85:
86:
87: #include <limits.h>
88:
89: #if defined(NeXT)
90: # include <libc.h>
91: #endif /* NeXT */
92:
93: /* symbol indexed constants */
94:
95: #define DOCOL 0
96: #define DOCON 1
97: #define DOVAR 2
98: #define DOUSER 3
99: #define DODEFER 4
100: #define DOFIELD 5
101: #define DOVAL 6
102: #define DODOES 7
103: #define DOABICODE 8
104: #define DOSEMIABICODE 9
105: #define DOER_MAX 9
106:
107: #include "machine.h"
108:
109: /* C interface data types */
110:
111: typedef WYDE_TYPE Wyde;
112: typedef TETRABYTE_TYPE Tetrabyte;
113: typedef OCTABYTE_TYPE Octabyte;
114: typedef unsigned WYDE_TYPE UWyde;
115: typedef unsigned TETRABYTE_TYPE UTetrabyte;
116: typedef unsigned OCTABYTE_TYPE UOctabyte;
117:
118: /* Forth data types */
119: /* Cell and UCell must be the same size as a pointer */
120: #define CELL_BITS (sizeof(Cell) * CHAR_BIT)
121: #define CELL_MIN (((Cell)1)<<(sizeof(Cell)*CHAR_BIT-1))
122:
123: #define HALFCELL_BITS (CELL_BITS/2)
124: #define HALFCELL_MASK ((~(UCell)0)>>HALFCELL_BITS)
125: #define UH(x) (((UCell)(x))>>HALFCELL_BITS)
126: #define LH(x) ((x)&HALFCELL_MASK)
127: #define L2U(x) (((UCell)(x))<<HALFCELL_BITS)
128: #define HIGHBIT(x) (((UCell)(x))>>(CELL_BITS-1))
129:
130: #define FLAG(b) (-(b))
131: #define FILEIO(error) (FLAG(error) & -37)
132: #define FILEEXIST(error) (FLAG(error) & -38)
133:
134: #define F_TRUE (FLAG(0==0))
135: #define F_FALSE (FLAG(0!=0))
136:
137: /* define this false if you want native division */
138: #ifdef FORCE_CDIV
139: #define FLOORED_DIV 0
140: #else
141: #define FLOORED_DIV ((1%-3)>0)
142: #endif
143:
144: #if defined(BUGGY_LONG_LONG)
145:
146: #define BUGGY_LL_CMP /* compares not possible */
147: #define BUGGY_LL_MUL /* multiplication not possible */
148: #define BUGGY_LL_DIV /* division not possible */
149: #define BUGGY_LL_ADD /* addition not possible */
150: #define BUGGY_LL_SHIFT /* shift not possible */
151: #define BUGGY_LL_D2F /* to float not possible */
152: #define BUGGY_LL_F2D /* from float not possible */
153: #define BUGGY_LL_SIZE /* long long "too short", so we use something else */
154:
155: typedef struct {
156: Cell hi;
157: UCell lo;
158: } DCell;
159:
160: typedef struct {
161: UCell hi;
162: UCell lo;
163: } UDCell;
164:
165: #define DHI(x) (x).hi
166: #define DLO(x) (x).lo
167: #define DHI_IS(x,y) (x).hi=(y)
168: #define DLO_IS(x,y) (x).lo=(y)
169:
170: #define UD2D(ud) ({UDCell _ud=(ud); (DCell){_ud.hi,_ud.lo};})
171: #define D2UD(d) ({DCell _d1=(d); (UDCell){_d1.hi,_d1.lo};})
172:
173: /* shifts by less than CELL_BITS */
174: #define DLSHIFT(d,u) ({DCell _d=(d); UCell _u=(u); \
175: ((_u==0) ? \
176: _d : \
177: (DCell){(_d.hi<<_u)|(_d.lo>>(CELL_BITS-_u)), \
178: _d.lo<<_u});})
179:
180: #define UDLSHIFT(ud,u) D2UD(DLSHIFT(UD2D(ud),u))
181:
182: #if SMALL_OFF_T
183: #define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
184: #define UD2OFF(ud) ((ud).lo)
185: #else /* !SMALL_OFF_T */
186: #define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
187: #define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
188: #endif /* !SMALL_OFF_T */
189: #define DZERO ((DCell){0,0})
190:
191: #else /* !defined(BUGGY_LONG_LONG) */
192:
193: /* DCell and UDCell must be twice as large as Cell */
194: typedef DOUBLE_CELL_TYPE DCell;
195: typedef DOUBLE_UCELL_TYPE UDCell;
196:
197: #define DHI(x) ({ Double_Store _d; _d.d=(x); _d.cells.high; })
198: #define DLO(x) ({ Double_Store _d; _d.d=(x); _d.cells.low; })
199:
200: /* beware with the assignment: x is referenced twice! */
201: #define DHI_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.high=(y); (x)=_d.d; })
202: #define DLO_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.low =(y); (x)=_d.d; })
203:
204: #define UD2D(ud) ((DCell)(ud))
205: #define D2UD(d) ((UDCell)(d))
206: #define OFF2UD(o) ((UDCell)(o))
207: #define UD2OFF(ud) ((off_t)(ud))
208: #define DZERO ((DCell)0)
209: /* shifts by less than CELL_BITS */
210: #define DLSHIFT(d,u) ((d)<<(u))
211: #define UDLSHIFT(d,u) ((d)<<(u))
212:
213: #endif /* !defined(BUGGY_LONG_LONG) */
214:
215: typedef union {
216: struct {
217: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
218: Cell high;
219: UCell low;
220: #else
221: UCell low;
222: Cell high;
223: #endif
224: } cells;
225: DCell d;
226: UDCell ud;
227: } Double_Store;
228:
229: #define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
230: Double_Store _d; \
231: _d.cells.low = (lo); \
232: _d.cells.high = (hi); \
233: (d_) = _d.t_; \
234: })
235:
236: #define STORE_DCELL_T(d_,lo,hi,t_) ({ \
237: Double_Store _d; \
238: _d.t_ = (d_); \
239: (lo) = _d.cells.low; \
240: (hi) = _d.cells.high; \
241: })
242:
243: #define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
244: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
245:
246: #define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
247: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
248:
249: typedef Label *Xt;
250:
251: /* PFA gives the parameter field address corresponding to a cfa */
252: #define PFA(cfa) (((Cell *)cfa)+2)
253: /* PFA1 is a special version for use just after a NEXT1 */
254: #define PFA1(cfa) PFA(cfa)
255: /* CODE_ADDRESS is the address of the code jumped to through the code field */
256: #define CODE_ADDRESS(cfa) (*(Xt)(cfa))
257:
258: /* DOES_CODE is the Forth code does jumps to */
259: #if !defined(DOUBLY_INDIRECT)
260: # define DOES_CA (symbols[DODOES])
261: #else /* defined(DOUBLY_INDIRECT) */
262: # define DOES_CA ((Label)&xts[DODOES])
263: #endif /* defined(DOUBLY_INDIRECT) */
264:
265:
266:
267: #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
268: /* MAKE_CF creates an appropriate code field at the cfa;
269: ca is the code address */
270: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
271: /* make a code field for a defining-word-defined word */
272:
273: #define CF(const) (-const-2)
274:
275: #define CF_NIL -1
276:
277: #ifndef FLUSH_ICACHE
278: #warning flush-icache probably will not work (see manual)
279: # define FLUSH_ICACHE(addr,size)
280: #warning no FLUSH_ICACHE, turning off dynamic native code by default
281: #undef NO_DYNAMIC_DEFAULT
282: #define NO_DYNAMIC_DEFAULT 1
283: #endif
284:
285: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
286: #define STACK_CACHE_DEFAULT 0
287: #else
288: #define STACK_CACHE_DEFAULT STACK_CACHE_DEFAULT_FAST
289: #endif
290:
291: #ifdef USE_FTOS
292: #define IF_fpTOS(x) x
293: #else
294: #define IF_fpTOS(x)
295: #define fpTOS (fp[0])
296: #endif
297:
298: #define IF_rpTOS(x)
299: #define rpTOS (rp[0])
300:
301: typedef struct {
302: Address base; /* base address of image (0 if relocatable) */
303: UCell checksum; /* checksum of ca's to protect against some
304: incompatible binary/executable combinations
305: (0 if relocatable) */
306: UCell image_size; /* all sizes in bytes */
307: UCell dict_size;
308: UCell data_stack_size;
309: UCell fp_stack_size;
310: UCell return_stack_size;
311: UCell locals_stack_size;
312: Xt *boot_entry; /* initial ip for booting (in BOOT) */
313: Xt *throw_entry; /* ip after signal (in THROW) */
314: Cell unused1; /* possibly tib stack size */
315: Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
316: Address data_stack_base; /* this and the following fields are initialized by the loader */
317: Address fp_stack_base;
318: Address return_stack_base;
319: Address locals_stack_base;
320: } ImageHeader;
321: /* the image-header is created in main.fs */
322:
323: #ifdef HAS_F83HEADERSTRING
324: struct F83Name {
325: struct F83Name *next; /* the link field for old hands */
326: char countetc;
327: char name[0];
328: };
329:
330: #define F83NAME_COUNT(np) ((np)->countetc & 0x1f)
331: #endif
332: struct Longname {
333: struct Longname *next; /* the link field for old hands */
334: Cell countetc;
335: char name[0];
336: };
337:
338: #define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<4)>>4))
339:
340: struct Cellpair {
341: Cell n1;
342: Cell n2;
343: };
344:
345: struct Cellquad {
346: Cell n1;
347: Cell n2;
348: Cell n3;
349: Cell n4;
350: };
351:
352: #define IOR(flag) ((flag)? -512-errno : 0)
353:
354: #ifdef GFORTH_DEBUGGING
355: #if defined(GLOBALS_NONRELOC)
356: /* if globals cause non-relocatable primitives, keep saved_ip and rp
357: in a structure and access it through locals */
358: typedef struct saved_regs {
359: Xt *sr_saved_ip;
360: Cell *sr_rp;
361: } saved_regs;
362: extern saved_regs saved_regs_v, *saved_regs_p;
363: #define saved_ip (saved_regs_p->sr_saved_ip)
364: #define rp (saved_regs_p->sr_rp)
365: /* for use in gforth_engine header */
366: #error sr_proto not passed in fflib.fs callbacks (solution: disable GLOBALS_NONRELOC)
367: #define sr_proto , struct saved_regs *saved_regs_p0
368: #define sr_call , saved_regs_p
369: #else /* !defined(GLOBALS_NONRELOC) */
370: extern Xt *saved_ip;
371: extern Cell *rp;
372: #define sr_proto
373: #define sr_call
374: #endif /* !defined(GLOBALS_NONRELOC) */
375: #else /* !defined(GFORTH_DEBUGGING) */
376: #define sr_proto
377: #define sr_call
378: #endif /* !defined(GFORTH_DEBUGGING) */
379:
380: Label *gforth_engine(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
381: Label *gforth_engine2(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
382: Label *gforth_engine3(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
383:
384: /* for ABI-CODE and ;ABI-CODE */
385: typedef Cell *abifunc(Cell *sp, Float **fpp);
386: typedef Cell *semiabifunc(Cell *sp, Float **fpp, Address body);
387:
388: /* engine/prim support routines */
389: Address gforth_alloc(Cell size);
390: char *cstr(Char *from, UCell size, int clear);
391: char *tilde_cstr(Char *from, UCell size, int clear);
392: Cell opencreate_file(char *s, Cell wfam, int flags, Cell *wiorp);
393: DCell timeval2us(struct timeval *tvp);
394: void cmove(Char *c_from, Char *c_to, UCell u);
395: void cmove_up(Char *c_from, Char *c_to, UCell u);
396: Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
397: struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
398: struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
399: struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
400: UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
401: struct Cellpair parse_white(Char *c_addr1, UCell u1);
402: Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
403: struct Cellquad read_line(Char *c_addr, UCell u1, FILE *wfileid);
404: struct Cellpair file_status(Char *c_addr, UCell u);
405: Cell to_float(Char *c_addr, UCell u, Float *r_p);
406: Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
407: void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
408: UCell lshift(UCell u1, UCell n);
409: UCell rshift(UCell u1, UCell n);
410: int gforth_system(Char *c_addr, UCell u);
411: void gforth_ms(UCell u);
412: UCell gforth_dlopen(Char *c_addr, UCell u);
413: Cell capscompare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
414: int gf_ungetc(int c, FILE *stream);
415: void gf_regetc(FILE *stream);
416: int gf_ungottenc(FILE *stream);
417:
418: /* signal handler stuff */
419: void install_signal_handlers(void);
420: void throw(int code);
421: /* throw codes */
422: #define BALL_DIVZERO -10
423: #define BALL_RESULTRANGE -11
424:
425: typedef void Sigfunc(int);
426: Sigfunc *bsd_signal(int signo, Sigfunc *func);
427:
428: /* dblsub routines */
429: DCell dnegate(DCell d1);
430: UDCell ummul (UCell a, UCell b);
431: DCell mmul (Cell a, Cell b);
432: UDCell umdiv (UDCell u, UCell v);
433: DCell smdiv (DCell num, Cell denom);
434: DCell fmdiv (DCell num, Cell denom);
435:
436: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
437:
438: void vm_print_profile(FILE *file);
439: void vm_count_block(Xt *ip);
440:
441: /* dynamic superinstruction stuff */
442: void compile_prim1(Cell *start);
443: void finish_code(void);
444: int forget_dyncode(Address code);
445: Label decompile_code(Label prim);
446:
447: extern int offset_image;
448: extern int die_on_signal;
449: extern int ignore_async_signals;
450: extern UCell pagesize;
451: extern ImageHeader *gforth_header;
452: extern Label *vm_prims;
453: extern Label *xts;
454: extern Cell npriminfos;
455:
456: #ifdef HAS_DEBUG
457: extern int debug;
458: #else
459: # define debug 0
460: #endif
461:
462: extern Cell *gforth_SP;
463: extern Cell *gforth_RP;
464: extern Address gforth_LP;
465: extern Float *gforth_FP;
466: extern Address gforth_UP;
467: #ifndef HAS_LINKBACK
468: extern void * gforth_pointers[];
469: #endif
470:
471: #ifdef HAS_FFCALL
472: extern Cell *gforth_RP;
473: extern Address gforth_LP;
474: extern void gforth_callback(Xt* fcall, void * alist);
475: #endif
476:
477: #ifdef NO_IP
478: extern Label next_code;
479: #endif
480:
481: #ifdef HAS_FILE
482: extern char* fileattr[6];
483: extern char* pfileattr[6];
484: extern int ufileattr[6];
485: #endif
486:
487: #ifdef PRINT_SUPER_LENGTHS
488: Cell prim_length(Cell prim);
489: void print_super_lengths();
490: #endif
491:
492: /* declare all the functions that are missing */
493: #ifndef HAVE_ATANH
494: extern double atanh(double r1);
495: extern double asinh(double r1);
496: extern double acosh(double r1);
497: #endif
498: #ifndef HAVE_ECVT
499: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
500: #endif
501: #ifndef HAVE_MEMMOVE
502: /* extern char *memmove(char *dest, const char *src, long n); */
503: #endif
504: #ifndef HAVE_POW10
505: extern double pow10(double x);
506: #endif
507: #ifndef HAVE_STRERROR
508: extern char *strerror(int err);
509: #endif
510: #ifndef HAVE_STRSIGNAL
511: extern char *strsignal(int sig);
512: #endif
513: #ifndef HAVE_STRTOUL
514: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
515: #endif
516:
517: #define GROUP(x, n)
518: #define GROUPADD(n)
519:
520: #ifdef HAVE_ENDIAN_H
521: #include <endian.h>
522: #else
523: #define BSWAP16(x) ((((x) >> 8) & 0xff | (((x) & 0xff) << 8)))
524: #define BSWAP32(x) ((BSWAP16((x) >> 16) | (BSWAP16(x) << 16)))
525: #define BSWAP64(x) ((BSWAP32((x) >> 32) | (BSWAP32(x) << 32)))
526: #ifdef WORDS_BIGENDIAN
527: #define htobe16(x) (x)
528: #define htobe32(x) (x)
529: #define htobe64(x) (x)
530: #define be16toh(x) (x)
531: #define be32toh(x) (x)
532: #define be64toh(x) (x)
533: #define htole16(x) BSWAP16(x)
534: #define htole32(x) BSWAP32(x)
535: #define htole64(x) BSWAP64(x)
536: #define le16toh(x) BSWAP16(x)
537: #define le32toh(x) BSWAP32(x)
538: #define le64toh(x) BSWAP64(x)
539: #else
540: #define htobe16(x) BSWAP16(x)
541: #define htobe32(x) BSWAP32(x)
542: #define htobe64(x) BSWAP64(x)
543: #define be16toh(x) BSWAP16(x)
544: #define be32toh(x) BSWAP32(x)
545: #define be64toh(x) BSWAP64(x)
546: #define htole16(x) (x)
547: #define htole32(x) (x)
548: #define htole64(x) (x)
549: #define le16toh(x) (x)
550: #define le32toh(x) (x)
551: #define le64toh(x) (x)
552: #endif
553: #endif
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