| 1 : |
anton
|
1.1
|
/* Gforth virtual machine (aka inner interpreter) |
| 2 : |
|
|
|
| 3 : |
anton
|
1.6
|
Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
| 4 : |
anton
|
1.1
|
|
| 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 : |
|
|
*/ |
| 21 : |
|
|
|
| 22 : |
|
|
#include "config.h" |
| 23 : |
|
|
#include <ctype.h> |
| 24 : |
|
|
#include <stdio.h> |
| 25 : |
|
|
#include <string.h> |
| 26 : |
|
|
#include <math.h> |
| 27 : |
pazsan
|
1.4
|
#include <assert.h> |
| 28 : |
|
|
#include <stdlib.h> |
| 29 : |
|
|
#include <errno.h> |
| 30 : |
|
|
#include "forth.h" |
| 31 : |
|
|
#include "io.h" |
| 32 : |
|
|
#include "threaded.h" |
| 33 : |
|
|
#ifndef STANDALONE |
| 34 : |
anton
|
1.1
|
#include <sys/types.h> |
| 35 : |
|
|
#include <sys/stat.h> |
| 36 : |
|
|
#include <fcntl.h> |
| 37 : |
|
|
#include <time.h> |
| 38 : |
|
|
#include <sys/time.h> |
| 39 : |
|
|
#include <unistd.h> |
| 40 : |
|
|
#include <pwd.h> |
| 41 : |
pazsan
|
1.4
|
#else |
| 42 : |
|
|
#include "systypes.h" |
| 43 : |
|
|
#endif |
| 44 : |
anton
|
1.1
|
|
| 45 : |
|
|
#if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN) /* what else? */ |
| 46 : |
|
|
#include <dlfcn.h> |
| 47 : |
|
|
#endif |
| 48 : |
pazsan
|
1.8
|
#if defined(_WIN32) |
| 49 : |
|
|
#include <windows.h> |
| 50 : |
|
|
#endif |
| 51 : |
anton
|
1.1
|
#ifdef hpux |
| 52 : |
|
|
#include <dl.h> |
| 53 : |
|
|
#endif |
| 54 : |
|
|
|
| 55 : |
|
|
#ifndef SEEK_SET |
| 56 : |
|
|
/* should be defined in stdio.h, but some systems don't have it */ |
| 57 : |
|
|
#define SEEK_SET 0 |
| 58 : |
|
|
#endif |
| 59 : |
|
|
|
| 60 : |
|
|
#define IOR(flag) ((flag)? -512-errno : 0) |
| 61 : |
|
|
|
| 62 : |
pazsan
|
1.4
|
struct F83Name { |
| 63 : |
|
|
struct F83Name *next; /* the link field for old hands */ |
| 64 : |
|
|
char countetc; |
| 65 : |
|
|
char name[0]; |
| 66 : |
|
|
}; |
| 67 : |
anton
|
1.1
|
|
| 68 : |
|
|
/* are macros for setting necessary? */ |
| 69 : |
|
|
#define F83NAME_COUNT(np) ((np)->countetc & 0x1f) |
| 70 : |
|
|
#define F83NAME_SMUDGE(np) (((np)->countetc & 0x40) != 0) |
| 71 : |
|
|
#define F83NAME_IMMEDIATE(np) (((np)->countetc & 0x20) != 0) |
| 72 : |
|
|
|
| 73 : |
|
|
Cell *SP; |
| 74 : |
|
|
Float *FP; |
| 75 : |
|
|
Address UP=NULL; |
| 76 : |
|
|
|
| 77 : |
|
|
#if 0 |
| 78 : |
|
|
/* not used currently */ |
| 79 : |
|
|
int emitcounter; |
| 80 : |
|
|
#endif |
| 81 : |
|
|
#define NULLC '\0' |
| 82 : |
|
|
|
| 83 : |
pazsan
|
1.14
|
#ifdef MEMCMP_AS_SUBROUTINE |
| 84 : |
|
|
extern int gforth_memcmp(const char * s1, const char * s2, size_t n); |
| 85 : |
anton
|
1.15
|
#define memcmp(s1,s2,n) gforth_memcmp(s1,s2,n) |
| 86 : |
pazsan
|
1.14
|
#endif |
| 87 : |
|
|
|
| 88 : |
pazsan
|
1.9
|
#ifdef HAS_FILE |
| 89 : |
anton
|
1.1
|
char *cstr(Char *from, UCell size, int clear) |
| 90 : |
|
|
/* return a C-string corresponding to the Forth string ( FROM SIZE ). |
| 91 : |
|
|
the C-string lives until the next call of cstr with CLEAR being true */ |
| 92 : |
|
|
{ |
| 93 : |
|
|
static struct cstr_buffer { |
| 94 : |
|
|
char *buffer; |
| 95 : |
|
|
size_t size; |
| 96 : |
|
|
} *buffers=NULL; |
| 97 : |
|
|
static int nbuffers=0; |
| 98 : |
|
|
static int used=0; |
| 99 : |
|
|
struct cstr_buffer *b; |
| 100 : |
|
|
|
| 101 : |
|
|
if (buffers==NULL) |
| 102 : |
|
|
buffers=malloc(0); |
| 103 : |
|
|
if (clear) |
| 104 : |
|
|
used=0; |
| 105 : |
|
|
if (used>=nbuffers) { |
| 106 : |
|
|
buffers=realloc(buffers,sizeof(struct cstr_buffer)*(used+1)); |
| 107 : |
|
|
buffers[used]=(struct cstr_buffer){malloc(0),0}; |
| 108 : |
|
|
nbuffers=used+1; |
| 109 : |
|
|
} |
| 110 : |
|
|
b=&buffers[used]; |
| 111 : |
|
|
if (size+1 > b->size) { |
| 112 : |
|
|
b->buffer = realloc(b->buffer,size+1); |
| 113 : |
|
|
b->size = size+1; |
| 114 : |
|
|
} |
| 115 : |
|
|
memcpy(b->buffer,from,size); |
| 116 : |
|
|
b->buffer[size]='\0'; |
| 117 : |
|
|
used++; |
| 118 : |
|
|
return b->buffer; |
| 119 : |
|
|
} |
| 120 : |
|
|
|
| 121 : |
|
|
char *tilde_cstr(Char *from, UCell size, int clear) |
| 122 : |
|
|
/* like cstr(), but perform tilde expansion on the string */ |
| 123 : |
|
|
{ |
| 124 : |
|
|
char *s1,*s2; |
| 125 : |
|
|
int s1_len, s2_len; |
| 126 : |
|
|
struct passwd *getpwnam (), *user_entry; |
| 127 : |
|
|
|
| 128 : |
|
|
if (size<1 || from[0]!='~') |
| 129 : |
|
|
return cstr(from, size, clear); |
| 130 : |
|
|
if (size<2 || from[1]=='/') { |
| 131 : |
|
|
s1 = (char *)getenv ("HOME"); |
| 132 : |
|
|
if(s1 == NULL) |
| 133 : |
|
|
s1 = ""; |
| 134 : |
|
|
s2 = from+1; |
| 135 : |
|
|
s2_len = size-1; |
| 136 : |
|
|
} else { |
| 137 : |
|
|
UCell i; |
| 138 : |
|
|
for (i=1; i<size && from[i]!='/'; i++) |
| 139 : |
|
|
; |
| 140 : |
anton
|
1.13
|
if (i==2 && from[1]=='+') /* deal with "~+", i.e., the wd */ |
| 141 : |
|
|
return cstr(from+3, size<3?0:size-3,clear); |
| 142 : |
anton
|
1.1
|
{ |
| 143 : |
|
|
char user[i]; |
| 144 : |
|
|
memcpy(user,from+1,i-1); |
| 145 : |
|
|
user[i-1]='\0'; |
| 146 : |
|
|
user_entry=getpwnam(user); |
| 147 : |
|
|
} |
| 148 : |
|
|
if (user_entry==NULL) |
| 149 : |
|
|
return cstr(from, size, clear); |
| 150 : |
|
|
s1 = user_entry->pw_dir; |
| 151 : |
|
|
s2 = from+i; |
| 152 : |
|
|
s2_len = size-i; |
| 153 : |
|
|
} |
| 154 : |
|
|
s1_len = strlen(s1); |
| 155 : |
|
|
if (s1_len>1 && s1[s1_len-1]=='/') |
| 156 : |
|
|
s1_len--; |
| 157 : |
|
|
{ |
| 158 : |
|
|
char path[s1_len+s2_len]; |
| 159 : |
|
|
memcpy(path,s1,s1_len); |
| 160 : |
|
|
memcpy(path+s1_len,s2,s2_len); |
| 161 : |
|
|
return cstr(path,s1_len+s2_len,clear); |
| 162 : |
|
|
} |
| 163 : |
|
|
} |
| 164 : |
pazsan
|
1.9
|
#endif |
| 165 : |
anton
|
1.1
|
|
| 166 : |
|
|
#define NEWLINE '\n' |
| 167 : |
|
|
|
| 168 : |
|
|
#ifndef HAVE_RINT |
| 169 : |
|
|
#define rint(x) floor((x)+0.5) |
| 170 : |
|
|
#endif |
| 171 : |
|
|
|
| 172 : |
pazsan
|
1.9
|
#ifdef HAS_FILE |
| 173 : |
anton
|
1.1
|
static char* fileattr[6]={"r","rb","r+","r+b","w","wb"}; |
| 174 : |
|
|
|
| 175 : |
|
|
#ifndef O_BINARY |
| 176 : |
|
|
#define O_BINARY 0 |
| 177 : |
|
|
#endif |
| 178 : |
|
|
#ifndef O_TEXT |
| 179 : |
|
|
#define O_TEXT 0 |
| 180 : |
|
|
#endif |
| 181 : |
|
|
|
| 182 : |
|
|
static int ufileattr[6]= { |
| 183 : |
|
|
O_RDONLY|O_TEXT, O_RDONLY|O_BINARY, |
| 184 : |
|
|
O_RDWR |O_TEXT, O_RDWR |O_BINARY, |
| 185 : |
|
|
O_WRONLY|O_TEXT, O_WRONLY|O_BINARY }; |
| 186 : |
pazsan
|
1.9
|
#endif |
| 187 : |
anton
|
1.1
|
|
| 188 : |
|
|
/* if machine.h has not defined explicit registers, define them as implicit */ |
| 189 : |
|
|
#ifndef IPREG |
| 190 : |
|
|
#define IPREG |
| 191 : |
|
|
#endif |
| 192 : |
|
|
#ifndef SPREG |
| 193 : |
|
|
#define SPREG |
| 194 : |
|
|
#endif |
| 195 : |
|
|
#ifndef RPREG |
| 196 : |
|
|
#define RPREG |
| 197 : |
|
|
#endif |
| 198 : |
|
|
#ifndef FPREG |
| 199 : |
|
|
#define FPREG |
| 200 : |
|
|
#endif |
| 201 : |
|
|
#ifndef LPREG |
| 202 : |
|
|
#define LPREG |
| 203 : |
|
|
#endif |
| 204 : |
|
|
#ifndef CFAREG |
| 205 : |
|
|
#define CFAREG |
| 206 : |
|
|
#endif |
| 207 : |
|
|
#ifndef UPREG |
| 208 : |
|
|
#define UPREG |
| 209 : |
|
|
#endif |
| 210 : |
|
|
#ifndef TOSREG |
| 211 : |
|
|
#define TOSREG |
| 212 : |
|
|
#endif |
| 213 : |
|
|
#ifndef FTOSREG |
| 214 : |
|
|
#define FTOSREG |
| 215 : |
|
|
#endif |
| 216 : |
|
|
|
| 217 : |
|
|
#ifndef CPU_DEP1 |
| 218 : |
|
|
# define CPU_DEP1 0 |
| 219 : |
|
|
#endif |
| 220 : |
|
|
|
| 221 : |
|
|
/* declare and compute cfa for certain threading variants */ |
| 222 : |
|
|
/* warning: this is nonsyntactical; it will not work in place of a statement */ |
| 223 : |
anton
|
1.12
|
#ifndef GETCFA |
| 224 : |
anton
|
1.1
|
#define DOCFA |
| 225 : |
|
|
#else |
| 226 : |
|
|
#define DOCFA Xt cfa; GETCFA(cfa) |
| 227 : |
|
|
#endif |
| 228 : |
|
|
|
| 229 : |
anton
|
1.10
|
#ifdef GFORTH_DEBUGGING |
| 230 : |
|
|
/* define some VM registers as global variables, so they survive exceptions; |
| 231 : |
|
|
global register variables are not up to the task (according to the |
| 232 : |
|
|
GNU C manual) */ |
| 233 : |
|
|
Xt *ip; |
| 234 : |
|
|
Cell *rp; |
| 235 : |
|
|
#endif |
| 236 : |
|
|
|
| 237 : |
anton
|
1.1
|
Label *engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0) |
| 238 : |
|
|
/* executes code at ip, if ip!=NULL |
| 239 : |
|
|
returns array of machine code labels (for use in a loader), if ip==NULL |
| 240 : |
|
|
*/ |
| 241 : |
|
|
{ |
| 242 : |
anton
|
1.10
|
#ifndef GFORTH_DEBUGGING |
| 243 : |
|
|
register Xt *ip IPREG; |
| 244 : |
|
|
register Cell *rp RPREG; |
| 245 : |
|
|
#endif |
| 246 : |
anton
|
1.1
|
register Cell *sp SPREG = sp0; |
| 247 : |
|
|
register Float *fp FPREG = fp0; |
| 248 : |
|
|
register Address lp LPREG = lp0; |
| 249 : |
|
|
#ifdef CFA_NEXT |
| 250 : |
|
|
register Xt cfa CFAREG; |
| 251 : |
|
|
#endif |
| 252 : |
anton
|
1.11
|
#ifdef MORE_VARS |
| 253 : |
|
|
MORE_VARS |
| 254 : |
|
|
#endif |
| 255 : |
anton
|
1.1
|
register Address up UPREG = UP; |
| 256 : |
|
|
IF_TOS(register Cell TOS TOSREG;) |
| 257 : |
|
|
IF_FTOS(register Float FTOS FTOSREG;) |
| 258 : |
|
|
#if defined(DOUBLY_INDIRECT) |
| 259 : |
|
|
static Label *symbols; |
| 260 : |
|
|
static void *routines[]= { |
| 261 : |
|
|
#else /* !defined(DOUBLY_INDIRECT) */ |
| 262 : |
|
|
static Label symbols[]= { |
| 263 : |
|
|
#endif /* !defined(DOUBLY_INDIRECT) */ |
| 264 : |
pazsan
|
1.4
|
(Label)&&docol, |
| 265 : |
|
|
(Label)&&docon, |
| 266 : |
|
|
(Label)&&dovar, |
| 267 : |
|
|
(Label)&&douser, |
| 268 : |
|
|
(Label)&&dodefer, |
| 269 : |
|
|
(Label)&&dofield, |
| 270 : |
|
|
(Label)&&dodoes, |
| 271 : |
anton
|
1.1
|
/* the following entry is normally unused; |
| 272 : |
|
|
it's there because its index indicates a does-handler */ |
| 273 : |
pazsan
|
1.7
|
CPU_DEP1, |
| 274 : |
anton
|
1.1
|
#include "prim_lab.i" |
| 275 : |
pazsan
|
1.4
|
(Label)0 |
| 276 : |
anton
|
1.1
|
}; |
| 277 : |
|
|
#ifdef CPU_DEP2 |
| 278 : |
|
|
CPU_DEP2 |
| 279 : |
|
|
#endif |
| 280 : |
|
|
|
| 281 : |
anton
|
1.10
|
ip = ip0; |
| 282 : |
|
|
rp = rp0; |
| 283 : |
anton
|
1.1
|
#ifdef DEBUG |
| 284 : |
|
|
fprintf(stderr,"ip=%x, sp=%x, rp=%x, fp=%x, lp=%x, up=%x\n", |
| 285 : |
|
|
(unsigned)ip,(unsigned)sp,(unsigned)rp, |
| 286 : |
|
|
(unsigned)fp,(unsigned)lp,(unsigned)up); |
| 287 : |
|
|
#endif |
| 288 : |
|
|
|
| 289 : |
|
|
if (ip == NULL) { |
| 290 : |
|
|
#if defined(DOUBLY_INDIRECT) |
| 291 : |
anton
|
1.3
|
#define MAX_SYMBOLS (sizeof(routines)/sizeof(routines[0])) |
| 292 : |
|
|
#define CODE_OFFSET (22*sizeof(Cell)) |
| 293 : |
anton
|
1.1
|
int i; |
| 294 : |
anton
|
1.3
|
Cell code_offset = offset_image? CODE_OFFSET : 0; |
| 295 : |
pazsan
|
1.7
|
|
| 296 : |
anton
|
1.3
|
symbols = (Label *)(malloc(MAX_SYMBOLS*sizeof(Cell)+CODE_OFFSET)+code_offset); |
| 297 : |
anton
|
1.1
|
for (i=0; i<DOESJUMP+1; i++) |
| 298 : |
pazsan
|
1.7
|
symbols[i] = (Label)routines[i]; |
| 299 : |
anton
|
1.1
|
for (; routines[i]!=0; i++) { |
| 300 : |
|
|
if (i>=MAX_SYMBOLS) { |
| 301 : |
|
|
fprintf(stderr,"gforth-ditc: more than %d primitives\n",MAX_SYMBOLS); |
| 302 : |
|
|
exit(1); |
| 303 : |
|
|
} |
| 304 : |
pazsan
|
1.7
|
symbols[i] = &routines[i]; |
| 305 : |
|
|
} |
| 306 : |
pazsan
|
1.5
|
#endif /* defined(DOUBLY_INDIRECT) */ |
| 307 : |
pazsan
|
1.7
|
return symbols; |
| 308 : |
|
|
} |
| 309 : |
anton
|
1.1
|
|
| 310 : |
|
|
IF_TOS(TOS = sp[0]); |
| 311 : |
|
|
IF_FTOS(FTOS = fp[0]); |
| 312 : |
pazsan
|
1.7
|
/* prep_terminal(); */ |
| 313 : |
anton
|
1.11
|
SET_IP(ip); |
| 314 : |
anton
|
1.1
|
NEXT; |
| 315 : |
|
|
|
| 316 : |
anton
|
1.11
|
|
| 317 : |
anton
|
1.1
|
#ifdef CPU_DEP3 |
| 318 : |
|
|
CPU_DEP3 |
| 319 : |
|
|
#endif |
| 320 : |
|
|
|
| 321 : |
|
|
docol: |
| 322 : |
|
|
{ |
| 323 : |
|
|
DOCFA; |
| 324 : |
|
|
#ifdef DEBUG |
| 325 : |
|
|
fprintf(stderr,"%08lx: col: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
| 326 : |
|
|
#endif |
| 327 : |
|
|
#ifdef CISC_NEXT |
| 328 : |
|
|
/* this is the simple version */ |
| 329 : |
|
|
*--rp = (Cell)ip; |
| 330 : |
anton
|
1.11
|
SET_IP((Xt *)PFA1(cfa)); |
| 331 : |
anton
|
1.1
|
NEXT; |
| 332 : |
|
|
#else |
| 333 : |
anton
|
1.11
|
/* this one is important, so we help the compiler optimizing */ |
| 334 : |
anton
|
1.1
|
{ |
| 335 : |
|
|
DEF_CA |
| 336 : |
anton
|
1.11
|
rp[-1] = (Cell)ip; |
| 337 : |
|
|
SET_IP((Xt *)PFA1(cfa)); |
| 338 : |
|
|
NEXT_P1; |
| 339 : |
|
|
rp--; |
| 340 : |
|
|
NEXT_P2; |
| 341 : |
anton
|
1.1
|
} |
| 342 : |
|
|
#endif |
| 343 : |
|
|
} |
| 344 : |
|
|
|
| 345 : |
|
|
docon: |
| 346 : |
|
|
{ |
| 347 : |
|
|
DOCFA; |
| 348 : |
|
|
#ifdef DEBUG |
| 349 : |
|
|
fprintf(stderr,"%08lx: con: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa)); |
| 350 : |
|
|
#endif |
| 351 : |
|
|
#ifdef USE_TOS |
| 352 : |
|
|
*sp-- = TOS; |
| 353 : |
|
|
TOS = *(Cell *)PFA1(cfa); |
| 354 : |
|
|
#else |
| 355 : |
|
|
*--sp = *(Cell *)PFA1(cfa); |
| 356 : |
|
|
#endif |
| 357 : |
|
|
} |
| 358 : |
|
|
NEXT_P0; |
| 359 : |
|
|
NEXT; |
| 360 : |
|
|
|
| 361 : |
|
|
dovar: |
| 362 : |
|
|
{ |
| 363 : |
|
|
DOCFA; |
| 364 : |
|
|
#ifdef DEBUG |
| 365 : |
|
|
fprintf(stderr,"%08lx: var: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
| 366 : |
|
|
#endif |
| 367 : |
|
|
#ifdef USE_TOS |
| 368 : |
|
|
*sp-- = TOS; |
| 369 : |
|
|
TOS = (Cell)PFA1(cfa); |
| 370 : |
|
|
#else |
| 371 : |
|
|
*--sp = (Cell)PFA1(cfa); |
| 372 : |
|
|
#endif |
| 373 : |
|
|
} |
| 374 : |
|
|
NEXT_P0; |
| 375 : |
|
|
NEXT; |
| 376 : |
|
|
|
| 377 : |
|
|
douser: |
| 378 : |
|
|
{ |
| 379 : |
|
|
DOCFA; |
| 380 : |
|
|
#ifdef DEBUG |
| 381 : |
|
|
fprintf(stderr,"%08lx: user: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
| 382 : |
|
|
#endif |
| 383 : |
|
|
#ifdef USE_TOS |
| 384 : |
|
|
*sp-- = TOS; |
| 385 : |
|
|
TOS = (Cell)(up+*(Cell*)PFA1(cfa)); |
| 386 : |
|
|
#else |
| 387 : |
|
|
*--sp = (Cell)(up+*(Cell*)PFA1(cfa)); |
| 388 : |
|
|
#endif |
| 389 : |
|
|
} |
| 390 : |
|
|
NEXT_P0; |
| 391 : |
|
|
NEXT; |
| 392 : |
|
|
|
| 393 : |
|
|
dodefer: |
| 394 : |
|
|
{ |
| 395 : |
|
|
DOCFA; |
| 396 : |
|
|
#ifdef DEBUG |
| 397 : |
|
|
fprintf(stderr,"%08lx: defer: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa)); |
| 398 : |
|
|
#endif |
| 399 : |
|
|
EXEC(*(Xt *)PFA1(cfa)); |
| 400 : |
|
|
} |
| 401 : |
|
|
|
| 402 : |
|
|
dofield: |
| 403 : |
|
|
{ |
| 404 : |
|
|
DOCFA; |
| 405 : |
|
|
#ifdef DEBUG |
| 406 : |
|
|
fprintf(stderr,"%08lx: field: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
| 407 : |
|
|
#endif |
| 408 : |
anton
|
1.11
|
TOS += *(Cell*)PFA1(cfa); |
| 409 : |
anton
|
1.1
|
} |
| 410 : |
|
|
NEXT_P0; |
| 411 : |
|
|
NEXT; |
| 412 : |
|
|
|
| 413 : |
|
|
dodoes: |
| 414 : |
|
|
/* this assumes the following structure: |
| 415 : |
|
|
defining-word: |
| 416 : |
|
|
|
| 417 : |
|
|
... |
| 418 : |
|
|
DOES> |
| 419 : |
|
|
(possible padding) |
| 420 : |
|
|
possibly handler: jmp dodoes |
| 421 : |
|
|
(possible branch delay slot(s)) |
| 422 : |
|
|
Forth code after DOES> |
| 423 : |
|
|
|
| 424 : |
|
|
defined word: |
| 425 : |
|
|
|
| 426 : |
|
|
cfa: address of or jump to handler OR |
| 427 : |
|
|
address of or jump to dodoes, address of DOES-code |
| 428 : |
|
|
pfa: |
| 429 : |
|
|
|
| 430 : |
|
|
*/ |
| 431 : |
|
|
{ |
| 432 : |
|
|
DOCFA; |
| 433 : |
|
|
|
| 434 : |
|
|
/* fprintf(stderr, "Got CFA %08lx at doescode %08lx/%08lx: does: %08lx\n",cfa,(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa));*/ |
| 435 : |
|
|
#ifdef DEBUG |
| 436 : |
|
|
fprintf(stderr,"%08lx/%08lx: does: %08lx\n",(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa)); |
| 437 : |
|
|
fflush(stderr); |
| 438 : |
|
|
#endif |
| 439 : |
|
|
*--rp = (Cell)ip; |
| 440 : |
|
|
/* PFA1 might collide with DOES_CODE1 here, so we use PFA */ |
| 441 : |
|
|
#ifdef USE_TOS |
| 442 : |
|
|
*sp-- = TOS; |
| 443 : |
|
|
TOS = (Cell)PFA(cfa); |
| 444 : |
|
|
#else |
| 445 : |
|
|
*--sp = (Cell)PFA(cfa); |
| 446 : |
|
|
#endif |
| 447 : |
anton
|
1.11
|
SET_IP(DOES_CODE1(cfa)); |
| 448 : |
anton
|
1.1
|
/* fprintf(stderr,"TOS = %08lx, IP=%08lx\n", TOS, IP);*/ |
| 449 : |
|
|
} |
| 450 : |
|
|
NEXT; |
| 451 : |
|
|
|
| 452 : |
|
|
#include "prim.i" |
| 453 : |
|
|
} |