Annotation of gforth/engine/forth.h, revision 1.104
1.1 anton 1: /* common header file
2:
1.99 anton 3: Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008 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
1.89 anton 9: as published by the Free Software Foundation, either version 3
1.1 anton 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
1.89 anton 18: along with this program; if not, see http://www.gnu.org/licenses/.
1.1 anton 19: */
20:
21: #include "config.h"
1.90 anton 22: #include "128bit.h"
1.18 anton 23: #include <stdio.h>
1.35 anton 24: #include <sys/time.h>
25: #include <unistd.h>
1.95 pazsan 26: #ifndef STANDALONE
1.103 anton 27: #if defined(HAVE_LIBLTDL)
1.87 anton 28: #include <ltdl.h>
1.95 pazsan 29: #endif
1.103 anton 30: #endif
1.1 anton 31:
1.93 anton 32: #if !defined(FORCE_LL) && !defined(BUGGY_LONG_LONG)
33: #define BUGGY_LONG_LONG
34: #endif
35:
1.32 anton 36: #if defined(DOUBLY_INDIRECT)||defined(INDIRECT_THREADED)||defined(VM_PROFILING)
37: #define NO_DYNAMIC
38: #endif
39:
1.1 anton 40: #if defined(DOUBLY_INDIRECT)
41: # undef DIRECT_THREADED
42: # undef INDIRECT_THREADED
43: # define INDIRECT_THREADED
44: #endif
45:
1.57 anton 46: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
1.23 anton 47: # undef USE_TOS
48: # undef USE_FTOS
1.56 anton 49: # undef USE_NO_TOS
50: # undef USE_NO_FTOS
1.23 anton 51: # define USE_NO_TOS
52: # define USE_NO_FTOS
1.57 anton 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"
1.58 anton 62: /* #define PROFILE_I "profile.i" */
1.57 anton 63:
64: #else
65: /* gforth-fast or gforth-native */
1.59 anton 66: # undef USE_TOS
67: # undef USE_FTOS
68: # undef USE_NO_TOS
69: # undef USE_NO_FTOS
70: # define USE_TOS
1.57 anton 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"
1.58 anton 80: /* profile.c uses profile.i but does not define VM_PROFILING */
81: /* #define PROFILE_I "profile-fast.i" */
1.57 anton 82:
1.23 anton 83: #endif
1.57 anton 84:
85:
1.23 anton 86:
1.1 anton 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
1.86 pazsan 101: #define DOVAL 6
102: #define DODOES 7
103: #define DOESJUMP 8
1.1 anton 104:
105: /* the size of the DOESJUMP, which resides between DOES> and the does-code */
106: #define DOES_HANDLER_SIZE (2*sizeof(Cell))
107:
1.6 jwilke 108: #include "machine.h"
1.1 anton 109:
1.68 pazsan 110: /* C interface data types */
111:
112: typedef WYDE_TYPE Wyde;
113: typedef TETRABYTE_TYPE Tetrabyte;
114: typedef unsigned WYDE_TYPE UWyde;
115: typedef unsigned TETRABYTE_TYPE UTetrabyte;
116:
1.1 anton 117: /* Forth data types */
118: /* Cell and UCell must be the same size as a pointer */
119: #define CELL_BITS (sizeof(Cell) * CHAR_BIT)
1.77 anton 120: #define CELL_MIN (((Cell)1)<<(sizeof(Cell)*CHAR_BIT-1))
1.78 anton 121:
122: #define HALFCELL_BITS (CELL_BITS/2)
123: #define HALFCELL_MASK ((~(UCell)0)>>HALFCELL_BITS)
124: #define UH(x) (((UCell)(x))>>HALFCELL_BITS)
125: #define LH(x) ((x)&HALFCELL_MASK)
126: #define L2U(x) (((UCell)(x))<<HALFCELL_BITS)
127: #define HIGHBIT(x) (((UCell)(x))>>(CELL_BITS-1))
128:
1.1 anton 129: #define FLAG(b) (-(b))
130: #define FILEIO(error) (FLAG(error) & -37)
131: #define FILEEXIST(error) (FLAG(error) & -38)
132:
133: #define F_TRUE (FLAG(0==0))
134: #define F_FALSE (FLAG(0!=0))
135:
1.65 pazsan 136: /* define this false if you want native division */
1.66 pazsan 137: #ifdef FORCE_CDIV
138: #define FLOORED_DIV 0
139: #else
1.65 pazsan 140: #define FLOORED_DIV ((1%-3)>0)
1.66 pazsan 141: #endif
1.65 pazsan 142:
1.93 anton 143: #if defined(BUGGY_LONG_LONG)
1.64 pazsan 144:
145: #define BUGGY_LL_CMP /* compares not possible */
146: #define BUGGY_LL_MUL /* multiplication not possible */
147: #define BUGGY_LL_DIV /* division not possible */
148: #define BUGGY_LL_ADD /* addition not possible */
149: #define BUGGY_LL_SHIFT /* shift not possible */
150: #define BUGGY_LL_D2F /* to float not possible */
151: #define BUGGY_LL_F2D /* from float not possible */
152: #define BUGGY_LL_SIZE /* long long "too short", so we use something else */
153:
1.1 anton 154: typedef struct {
155: Cell hi;
156: UCell lo;
157: } DCell;
158:
159: typedef struct {
160: UCell hi;
161: UCell lo;
162: } UDCell;
163:
1.64 pazsan 164: #define DHI(x) (x).hi
165: #define DLO(x) (x).lo
166: #define DHI_IS(x,y) (x).hi=(y)
167: #define DLO_IS(x,y) (x).lo=(y)
168:
1.78 anton 169: #define UD2D(ud) ({UDCell _ud=(ud); (DCell){_ud.hi,_ud.lo};})
1.80 anton 170: #define D2UD(d) ({DCell _d1=(d); (UDCell){_d1.hi,_d1.lo};})
171:
172: /* shifts by less than CELL_BITS */
1.104 ! anton 173: #define DLSHIFT(d,u) ({DCell _d=(d); UCell _u=(u); \
! 174: ((_u==0) ? \
! 175: _d : \
! 176: (DCell){(_d.hi<<_u)|(_d.lo>>(CELL_BITS-_u)), \
! 177: _d.lo<<_u});})
! 178:
1.80 anton 179: #define UDLSHIFT(ud,u) D2UD(DLSHIFT(UD2D(ud),u))
1.78 anton 180:
1.39 anton 181: #if SMALL_OFF_T
182: #define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
183: #define UD2OFF(ud) ((ud).lo)
184: #else /* !SMALL_OFF_T */
185: #define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
1.36 anton 186: #define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
1.39 anton 187: #endif /* !SMALL_OFF_T */
1.1 anton 188: #define DZERO ((DCell){0,0})
189:
1.93 anton 190: #else /* !defined(BUGGY_LONG_LONG) */
1.1 anton 191:
192: /* DCell and UDCell must be twice as large as Cell */
193: typedef DOUBLE_CELL_TYPE DCell;
1.63 pazsan 194: typedef DOUBLE_UCELL_TYPE UDCell;
1.1 anton 195:
1.93 anton 196: #define DHI(x) ({ Double_Store _d; _d.d=(x); _d.cells.high; })
197: #define DLO(x) ({ Double_Store _d; _d.d=(x); _d.cells.low; })
198:
199: /* beware with the assignment: x is referenced twice! */
200: #define DHI_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.high=(y); (x)=_d.d; })
201: #define DLO_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.low =(y); (x)=_d.d; })
202:
203: #define UD2D(ud) ((DCell)(ud))
204: #define D2UD(d) ((UDCell)(d))
1.36 anton 205: #define OFF2UD(o) ((UDCell)(o))
206: #define UD2OFF(ud) ((off_t)(ud))
1.16 anton 207: #define DZERO ((DCell)0)
1.80 anton 208: /* shifts by less than CELL_BITS */
209: #define DLSHIFT(d,u) ((d)<<(u))
210: #define UDLSHIFT(d,u) ((d)<<(u))
1.16 anton 211:
1.93 anton 212: #endif /* !defined(BUGGY_LONG_LONG) */
1.16 anton 213:
1.1 anton 214: typedef union {
215: struct {
1.16 anton 216: #if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
1.1 anton 217: Cell high;
218: UCell low;
219: #else
220: UCell low;
221: Cell high;
1.20 crook 222: #endif
1.1 anton 223: } cells;
1.16 anton 224: DCell d;
225: UDCell ud;
1.1 anton 226: } Double_Store;
1.64 pazsan 227:
1.16 anton 228: #define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
1.1 anton 229: Double_Store _d; \
230: _d.cells.low = (lo); \
231: _d.cells.high = (hi); \
1.16 anton 232: (d_) = _d.t_; \
1.1 anton 233: })
234:
1.16 anton 235: #define STORE_DCELL_T(d_,lo,hi,t_) ({ \
1.1 anton 236: Double_Store _d; \
1.16 anton 237: _d.t_ = (d_); \
1.1 anton 238: (lo) = _d.cells.low; \
239: (hi) = _d.cells.high; \
240: })
241:
1.28 anton 242: #define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
243: #define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
1.1 anton 244:
1.28 anton 245: #define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
246: #define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
1.1 anton 247:
248: typedef Label *Xt;
249:
250: /* PFA gives the parameter field address corresponding to a cfa */
251: #define PFA(cfa) (((Cell *)cfa)+2)
252: /* PFA1 is a special version for use just after a NEXT1 */
253: #define PFA1(cfa) PFA(cfa)
254: /* CODE_ADDRESS is the address of the code jumped to through the code field */
255: #define CODE_ADDRESS(cfa) (*(Xt)(cfa))
256:
257: /* DOES_CODE is the Forth code does jumps to */
258: #if !defined(DOUBLY_INDIRECT)
259: # define DOES_CA (symbols[DODOES])
260: #else /* defined(DOUBLY_INDIRECT) */
1.24 anton 261: # define DOES_CA ((Label)&xts[DODOES])
1.1 anton 262: #endif /* defined(DOUBLY_INDIRECT) */
263:
264:
265:
266: #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
267: /* MAKE_CF creates an appropriate code field at the cfa;
268: ca is the code address */
269: #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
270: /* make a code field for a defining-word-defined word */
271: #define MAKE_DOES_CF(cfa,does_code) ({MAKE_CF(cfa,DOES_CA); \
272: ((Cell *)cfa)[1] = (Cell)(does_code);})
273:
274: #define CF(const) (-const-2)
275:
276: #define CF_NIL -1
277:
278: #ifndef FLUSH_ICACHE
279: #warning flush-icache probably will not work (see manual)
280: # define FLUSH_ICACHE(addr,size)
1.45 anton 281: #warning no FLUSH_ICACHE, turning off dynamic native code by default
282: #undef NO_DYNAMIC_DEFAULT
283: #define NO_DYNAMIC_DEFAULT 1
1.1 anton 284: #endif
285:
1.67 anton 286: #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
287: #define STACK_CACHE_DEFAULT 0
1.1 anton 288: #else
1.67 anton 289: #define STACK_CACHE_DEFAULT STACK_CACHE_DEFAULT_FAST
1.1 anton 290: #endif
291:
292: #ifdef USE_FTOS
1.14 anton 293: #define IF_fpTOS(x) x
1.1 anton 294: #else
1.14 anton 295: #define IF_fpTOS(x)
296: #define fpTOS (fp[0])
1.1 anton 297: #endif
298:
1.15 anton 299: #define IF_rpTOS(x)
300: #define rpTOS (rp[0])
301:
1.10 anton 302: typedef struct {
303: Address base; /* base address of image (0 if relocatable) */
304: UCell checksum; /* checksum of ca's to protect against some
305: incompatible binary/executable combinations
306: (0 if relocatable) */
307: UCell image_size; /* all sizes in bytes */
308: UCell dict_size;
309: UCell data_stack_size;
310: UCell fp_stack_size;
311: UCell return_stack_size;
312: UCell locals_stack_size;
313: Xt *boot_entry; /* initial ip for booting (in BOOT) */
314: Xt *throw_entry; /* ip after signal (in THROW) */
315: Cell unused1; /* possibly tib stack size */
1.24 anton 316: Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
1.10 anton 317: Address data_stack_base; /* this and the following fields are initialized by the loader */
318: Address fp_stack_base;
319: Address return_stack_base;
320: Address locals_stack_base;
321: } ImageHeader;
322: /* the image-header is created in main.fs */
323:
1.82 pazsan 324: #ifdef HAS_F83HEADERSTRING
325: struct F83Name {
326: struct F83Name *next; /* the link field for old hands */
327: char countetc;
328: char name[0];
329: };
330:
331: #define F83NAME_COUNT(np) ((np)->countetc & 0x1f)
332: #endif
1.48 anton 333: struct Longname {
334: struct Longname *next; /* the link field for old hands */
335: Cell countetc;
336: char name[0];
337: };
338:
339: #define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3))
340:
341: struct Cellpair {
342: Cell n1;
343: Cell n2;
344: };
345:
346: struct Cellquad {
347: Cell n1;
348: Cell n2;
349: Cell n3;
350: Cell n4;
351: };
1.49 anton 352:
353: #define IOR(flag) ((flag)? -512-errno : 0)
1.48 anton 354:
1.91 anton 355: #ifdef GFORTH_DEBUGGING
356: #if defined(GLOBALS_NONRELOC)
357: /* if globals cause non-relocatable primitives, keep saved_ip and rp
358: in a structure and access it through locals */
359: typedef struct saved_regs {
360: Xt *sr_saved_ip;
361: Cell *sr_rp;
362: } saved_regs;
363: extern saved_regs saved_regs_v, *saved_regs_p;
364: #define saved_ip (saved_regs_p->sr_saved_ip)
365: #define rp (saved_regs_p->sr_rp)
366: /* for use in gforth_engine header */
1.94 anton 367: #error sr_proto not passed in fflib.fs callbacks (solution: disable GLOBALS_NONRELOC)
1.92 anton 368: #define sr_proto , struct saved_regs *saved_regs_p0
1.91 anton 369: #define sr_call , saved_regs_p
370: #else /* !defined(GLOBALS_NONRELOC) */
371: extern Xt *saved_ip;
372: extern Cell *rp;
373: #define sr_proto
374: #define sr_call
375: #endif /* !defined(GLOBALS_NONRELOC) */
376: #else /* !defined(GFORTH_DEBUGGING) */
377: #define sr_proto
378: #define sr_call
379: #endif /* !defined(GFORTH_DEBUGGING) */
380:
381: Label *gforth_engine(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
382: Label *gforth_engine2(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
383: Label *gforth_engine3(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
1.48 anton 384:
385: /* engine/prim support routines */
1.71 pazsan 386: Address gforth_alloc(Cell size);
1.35 anton 387: char *cstr(Char *from, UCell size, int clear);
1.11 anton 388: char *tilde_cstr(Char *from, UCell size, int clear);
1.85 anton 389: Cell opencreate_file(char *s, Cell wfam, int flags, Cell *wiorp);
1.35 anton 390: DCell timeval2us(struct timeval *tvp);
1.48 anton 391: void cmove(Char *c_from, Char *c_to, UCell u);
392: void cmove_up(Char *c_from, Char *c_to, UCell u);
393: Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
394: struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
395: struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
396: struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
397: UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
398: struct Cellpair parse_white(Char *c_addr1, UCell u1);
399: Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
400: struct Cellquad read_line(Char *c_addr, UCell u1, Cell wfileid);
401: struct Cellpair file_status(Char *c_addr, UCell u);
1.91 anton 402: Cell to_float(Char *c_addr, UCell u, Float *r_p);
1.48 anton 403: Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
404: void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
1.60 pazsan 405: UCell lshift(UCell u1, UCell n);
406: UCell rshift(UCell u1, UCell n);
1.61 anton 407: int gforth_system(Char *c_addr, UCell u);
1.83 anton 408: void gforth_ms(UCell u);
1.102 pazsan 409: UCell gforth_dlopen(Char *c_addr, UCell u);
1.72 pazsan 410: Cell capscompare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
1.1 anton 411:
1.50 anton 412: /* signal handler stuff */
413: void install_signal_handlers(void);
1.75 anton 414: void throw(int code);
1.76 anton 415: /* throw codes */
416: #define BALL_DIVZERO -10
417: #define BALL_RESULTRANGE -11
418:
1.50 anton 419: typedef void Sigfunc(int);
420: Sigfunc *bsd_signal(int signo, Sigfunc *func);
421:
1.1 anton 422: /* dblsub routines */
423: DCell dnegate(DCell d1);
424: UDCell ummul (UCell a, UCell b);
425: DCell mmul (Cell a, Cell b);
426: UDCell umdiv (UDCell u, UCell v);
427: DCell smdiv (DCell num, Cell denom);
428: DCell fmdiv (DCell num, Cell denom);
429:
1.7 pazsan 430: Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
1.1 anton 431:
1.18 anton 432: void vm_print_profile(FILE *file);
433: void vm_count_block(Xt *ip);
1.17 anton 434:
1.22 anton 435: /* dynamic superinstruction stuff */
1.33 anton 436: void compile_prim1(Cell *start);
437: void finish_code(void);
1.34 anton 438: int forget_dyncode(Address code);
439: Label decompile_code(Label prim);
1.17 anton 440:
1.1 anton 441: extern int offset_image;
1.5 anton 442: extern int die_on_signal;
1.74 anton 443: extern int ignore_async_signals;
1.10 anton 444: extern UCell pagesize;
445: extern ImageHeader *gforth_header;
1.19 anton 446: extern Label *vm_prims;
1.24 anton 447: extern Label *xts;
1.25 anton 448: extern Cell npriminfos;
1.2 pazsan 449:
1.31 anton 450: #ifdef HAS_DEBUG
451: extern int debug;
452: #else
453: # define debug 0
454: #endif
455:
1.71 pazsan 456: extern Cell *gforth_SP;
1.100 pazsan 457: extern Cell *gforth_RP;
458: extern Address gforth_LP;
1.71 pazsan 459: extern Float *gforth_FP;
460: extern Address gforth_UP;
1.101 pazsan 461: #ifndef HAS_LINKBACK
462: extern void * gforth_pointers[];
463: #endif
1.35 anton 464:
1.53 pazsan 465: #ifdef HAS_FFCALL
1.71 pazsan 466: extern Cell *gforth_RP;
467: extern Address gforth_LP;
468: extern void gforth_callback(Xt* fcall, void * alist);
1.53 pazsan 469: #endif
470:
1.35 anton 471: #ifdef NO_IP
472: extern Label next_code;
473: #endif
474:
475: #ifdef HAS_FILE
476: extern char* fileattr[6];
477: extern char* pfileattr[6];
478: extern int ufileattr[6];
1.9 anton 479: #endif
480:
1.27 anton 481: #ifdef PRINT_SUPER_LENGTHS
482: Cell prim_length(Cell prim);
483: void print_super_lengths();
484: #endif
1.9 anton 485:
1.2 pazsan 486: /* declare all the functions that are missing */
487: #ifndef HAVE_ATANH
488: extern double atanh(double r1);
489: extern double asinh(double r1);
490: extern double acosh(double r1);
491: #endif
492: #ifndef HAVE_ECVT
1.4 anton 493: /* extern char* ecvt(double x, int len, int* exp, int* sign);*/
1.2 pazsan 494: #endif
495: #ifndef HAVE_MEMMOVE
1.3 anton 496: /* extern char *memmove(char *dest, const char *src, long n); */
1.2 pazsan 497: #endif
498: #ifndef HAVE_POW10
499: extern double pow10(double x);
500: #endif
501: #ifndef HAVE_STRERROR
502: extern char *strerror(int err);
503: #endif
504: #ifndef HAVE_STRSIGNAL
505: extern char *strsignal(int sig);
506: #endif
507: #ifndef HAVE_STRTOUL
1.3 anton 508: extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
1.2 pazsan 509: #endif
510:
1.37 pazsan 511: #define GROUP(x, n)
1.53 pazsan 512: #define GROUPADD(n)
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