Annotation of gforth/engine/main.c, revision 1.176
1.1 anton 1: /* command line interpretation, image loading etc. for Gforth
2:
3:
1.170 anton 4: Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
1.1 anton 5:
6: This file is part of Gforth.
7:
8: Gforth is free software; you can redistribute it and/or
9: modify it under the terms of the GNU General Public License
10: as published by the Free Software Foundation; either version 2
11: of the License, or (at your option) any later version.
12:
13: This program is distributed in the hope that it will be useful,
14: but WITHOUT ANY WARRANTY; without even the implied warranty of
15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: GNU General Public License for more details.
17:
18: You should have received a copy of the GNU General Public License
19: along with this program; if not, write to the Free Software
1.40 anton 20: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1 anton 21: */
22:
23: #include "config.h"
1.82 anton 24: #include "forth.h"
1.1 anton 25: #include <errno.h>
26: #include <ctype.h>
27: #include <stdio.h>
1.2 pazsan 28: #include <unistd.h>
1.1 anton 29: #include <string.h>
30: #include <math.h>
31: #include <sys/types.h>
1.32 pazsan 32: #ifndef STANDALONE
1.1 anton 33: #include <sys/stat.h>
1.32 pazsan 34: #endif
1.1 anton 35: #include <fcntl.h>
36: #include <assert.h>
37: #include <stdlib.h>
1.102 anton 38: #include <signal.h>
1.11 pazsan 39: #ifndef STANDALONE
1.1 anton 40: #if HAVE_SYS_MMAN_H
41: #include <sys/mman.h>
42: #endif
1.11 pazsan 43: #endif
1.1 anton 44: #include "io.h"
45: #include "getopt.h"
1.11 pazsan 46: #ifdef STANDALONE
1.174 pazsan 47: /* #include <systypes.h> */
1.11 pazsan 48: #endif
1.1 anton 49:
1.121 anton 50: typedef enum prim_num {
1.119 anton 51: /* definitions of N_execute etc. */
1.126 anton 52: #include PRIM_NUM_I
1.119 anton 53: N_START_SUPER
1.121 anton 54: } PrimNum;
1.119 anton 55:
1.79 anton 56: /* global variables for engine.c
57: We put them here because engine.c is compiled several times in
58: different ways for the same engine. */
1.161 pazsan 59: Cell *gforth_SP;
60: Float *gforth_FP;
61: Address gforth_UP=NULL;
1.79 anton 62:
1.115 pazsan 63: #ifdef HAS_FFCALL
1.161 pazsan 64: Cell *gforth_RP;
65: Address gforth_LP;
1.115 pazsan 66:
67: #include <callback.h>
68:
1.161 pazsan 69: va_alist gforth_clist;
1.115 pazsan 70:
1.161 pazsan 71: void gforth_callback(Xt* fcall, void * alist)
1.115 pazsan 72: {
1.140 pazsan 73: /* save global valiables */
1.161 pazsan 74: Cell *rp = gforth_RP;
75: Cell *sp = gforth_SP;
76: Float *fp = gforth_FP;
77: Address lp = gforth_LP;
1.168 pazsan 78: va_alist clist = gforth_clist;
1.140 pazsan 79:
1.161 pazsan 80: gforth_clist = (va_alist)alist;
1.140 pazsan 81:
1.161 pazsan 82: gforth_engine(fcall, sp, rp, fp, lp);
1.140 pazsan 83:
84: /* restore global variables */
1.161 pazsan 85: gforth_RP = rp;
86: gforth_SP = sp;
87: gforth_FP = fp;
88: gforth_LP = lp;
1.168 pazsan 89: gforth_clist = clist;
1.115 pazsan 90: }
91: #endif
92:
1.153 pazsan 93: #ifdef HAS_LIBFFI
1.161 pazsan 94: Cell *gforth_RP;
95: Address gforth_LP;
1.153 pazsan 96:
97: #include <ffi.h>
98:
1.164 pazsan 99: void ** gforth_clist;
100: void * gforth_ritem;
1.153 pazsan 101:
1.162 pazsan 102: void gforth_callback(ffi_cif * cif, void * resp, void ** args, void * ip)
1.153 pazsan 103: {
1.161 pazsan 104: Cell *rp = gforth_RP;
105: Cell *sp = gforth_SP;
106: Float *fp = gforth_FP;
107: Address lp = gforth_LP;
1.168 pazsan 108: void ** clist = gforth_clist;
109: void * ritem = gforth_ritem;
1.153 pazsan 110:
1.164 pazsan 111: gforth_clist = args;
112: gforth_ritem = resp;
1.153 pazsan 113:
1.164 pazsan 114: gforth_engine((Xt *)ip, sp, rp, fp, lp);
1.153 pazsan 115:
116: /* restore global variables */
1.161 pazsan 117: gforth_RP = rp;
118: gforth_SP = sp;
119: gforth_FP = fp;
120: gforth_LP = lp;
1.168 pazsan 121: gforth_clist = clist;
122: gforth_ritem = ritem;
1.153 pazsan 123: }
124: #endif
125:
1.79 anton 126: #ifdef GFORTH_DEBUGGING
127: /* define some VM registers as global variables, so they survive exceptions;
128: global register variables are not up to the task (according to the
129: GNU C manual) */
130: Xt *saved_ip;
131: Cell *rp;
132: #endif
133:
134: #ifdef NO_IP
135: Label next_code;
136: #endif
137:
138: #ifdef HAS_FILE
139: char* fileattr[6]={"rb","rb","r+b","r+b","wb","wb"};
140: char* pfileattr[6]={"r","r","r+","r+","w","w"};
141:
142: #ifndef O_BINARY
143: #define O_BINARY 0
144: #endif
145: #ifndef O_TEXT
146: #define O_TEXT 0
147: #endif
148:
149: int ufileattr[6]= {
150: O_RDONLY|O_BINARY, O_RDONLY|O_BINARY,
151: O_RDWR |O_BINARY, O_RDWR |O_BINARY,
152: O_WRONLY|O_BINARY, O_WRONLY|O_BINARY };
153: #endif
154: /* end global vars for engine.c */
155:
1.1 anton 156: #define PRIM_VERSION 1
157: /* increment this whenever the primitives change in an incompatible way */
158:
1.14 pazsan 159: #ifndef DEFAULTPATH
1.39 anton 160: # define DEFAULTPATH "."
1.14 pazsan 161: #endif
162:
1.1 anton 163: #ifdef MSDOS
164: jmp_buf throw_jmp_buf;
165: #endif
166:
1.56 anton 167: #if defined(DOUBLY_INDIRECT)
168: # define CFA(n) ({Cell _n = (n); ((Cell)(((_n & 0x4000) ? symbols : xts)+(_n&~0x4000UL)));})
1.1 anton 169: #else
1.56 anton 170: # define CFA(n) ((Cell)(symbols+((n)&~0x4000UL)))
1.1 anton 171: #endif
172:
173: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
174:
175: static UCell dictsize=0;
176: static UCell dsize=0;
177: static UCell rsize=0;
178: static UCell fsize=0;
179: static UCell lsize=0;
180: int offset_image=0;
1.4 anton 181: int die_on_signal=0;
1.169 anton 182: int ignore_async_signals=0;
1.13 pazsan 183: #ifndef INCLUDE_IMAGE
1.1 anton 184: static int clear_dictionary=0;
1.24 anton 185: UCell pagesize=1;
1.22 pazsan 186: char *progname;
187: #else
188: char *progname = "gforth";
189: int optind = 1;
1.13 pazsan 190: #endif
1.31 pazsan 191:
1.167 anton 192: #define CODE_BLOCK_SIZE (512*1024) /* !! overflow handling for -native */
1.48 anton 193: Address code_area=0;
1.73 anton 194: Cell code_area_size = CODE_BLOCK_SIZE;
1.75 anton 195: Address code_here=NULL+CODE_BLOCK_SIZE; /* does for code-area what HERE
196: does for the dictionary */
1.100 anton 197: Address start_flush=NULL; /* start of unflushed code */
1.74 anton 198: Cell last_jump=0; /* if the last prim was compiled without jump, this
199: is it's number, otherwise this contains 0 */
1.48 anton 200:
1.60 anton 201: static int no_super=0; /* true if compile_prim should not fuse prims */
1.81 anton 202: static int no_dynamic=NO_DYNAMIC_DEFAULT; /* if true, no code is generated
203: dynamically */
1.110 anton 204: static int print_metrics=0; /* if true, print metrics on exit */
1.171 anton 205: static int static_super_number = 0; /* number of ss used if available */
206: /* disabled because of tpa */
1.152 anton 207: #define MAX_STATE 9 /* maximum number of states */
1.125 anton 208: static int maxstates = MAX_STATE; /* number of states for stack caching */
1.110 anton 209: static int ss_greedy = 0; /* if true: use greedy, not optimal ss selection */
1.144 pazsan 210: static int diag = 0; /* if true: print diagnostic informations */
1.158 anton 211: static int tpa_noequiv = 0; /* if true: no state equivalence checking */
212: static int tpa_noautomaton = 0; /* if true: no tree parsing automaton */
213: static int tpa_trace = 0; /* if true: data for line graph of new states etc. */
1.144 pazsan 214: static int relocs = 0;
215: static int nonrelocs = 0;
1.60 anton 216:
1.30 pazsan 217: #ifdef HAS_DEBUG
1.68 anton 218: int debug=0;
1.144 pazsan 219: # define debugp(x...) if (debug) fprintf(x);
1.31 pazsan 220: #else
221: # define perror(x...)
222: # define fprintf(x...)
1.144 pazsan 223: # define debugp(x...)
1.30 pazsan 224: #endif
1.31 pazsan 225:
1.24 anton 226: ImageHeader *gforth_header;
1.43 anton 227: Label *vm_prims;
1.53 anton 228: #ifdef DOUBLY_INDIRECT
229: Label *xts; /* same content as vm_prims, but should only be used for xts */
230: #endif
1.1 anton 231:
1.125 anton 232: #ifndef NO_DYNAMIC
233: #define MAX_IMMARGS 2
234:
235: typedef struct {
236: Label start; /* NULL if not relocatable */
237: Cell length; /* only includes the jump iff superend is true*/
238: Cell restlength; /* length of the rest (i.e., the jump or (on superend) 0) */
239: char superend; /* true if primitive ends superinstruction, i.e.,
240: unconditional branch, execute, etc. */
241: Cell nimmargs;
242: struct immarg {
243: Cell offset; /* offset of immarg within prim */
244: char rel; /* true if immarg is relative */
245: } immargs[MAX_IMMARGS];
246: } PrimInfo;
247:
248: PrimInfo *priminfos;
249: PrimInfo **decomp_prims;
250:
1.139 anton 251: const char const* const prim_names[]={
252: #include PRIM_NAMES_I
253: };
254:
1.148 anton 255: void init_ss_cost(void);
256:
1.125 anton 257: static int is_relocatable(int p)
258: {
259: return !no_dynamic && priminfos[p].start != NULL;
260: }
261: #else /* defined(NO_DYNAMIC) */
262: static int is_relocatable(int p)
263: {
264: return 0;
265: }
266: #endif /* defined(NO_DYNAMIC) */
267:
1.30 pazsan 268: #ifdef MEMCMP_AS_SUBROUTINE
269: int gforth_memcmp(const char * s1, const char * s2, size_t n)
270: {
271: return memcmp(s1, s2, n);
272: }
273: #endif
274:
1.125 anton 275: static Cell max(Cell a, Cell b)
276: {
277: return a>b?a:b;
278: }
279:
280: static Cell min(Cell a, Cell b)
281: {
282: return a<b?a:b;
283: }
284:
1.175 pazsan 285: #ifndef STANDALONE
1.1 anton 286: /* image file format:
1.15 pazsan 287: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 288: * padding to a multiple of 8
1.84 anton 289: * magic: "Gforth3x" means format 0.6,
1.15 pazsan 290: * where x is a byte with
291: * bit 7: reserved = 0
292: * bit 6:5: address unit size 2^n octets
293: * bit 4:3: character size 2^n octets
294: * bit 2:1: cell size 2^n octets
295: * bit 0: endian, big=0, little=1.
296: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 297: * padding to max alignment (no padding necessary on current machines)
1.24 anton 298: * ImageHeader structure (see forth.h)
1.1 anton 299: * data (size in ImageHeader.image_size)
300: * tags ((if relocatable, 1 bit/data cell)
301: *
302: * tag==1 means that the corresponding word is an address;
303: * If the word is >=0, the address is within the image;
304: * addresses within the image are given relative to the start of the image.
305: * If the word =-1 (CF_NIL), the address is NIL,
306: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
307: * If the word =CF(DODOES), it's a DOES> CFA
308: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
309: * possibly containing a jump to dodoes)
1.51 anton 310: * If the word is <CF(DOESJUMP) and bit 14 is set, it's the xt of a primitive
311: * If the word is <CF(DOESJUMP) and bit 14 is clear,
312: * it's the threaded code of a primitive
1.85 pazsan 313: * bits 13..9 of a primitive token state which group the primitive belongs to,
314: * bits 8..0 of a primitive token index into the group
1.1 anton 315: */
316:
1.115 pazsan 317: Cell groups[32] = {
1.85 pazsan 318: 0,
1.121 anton 319: 0
1.90 anton 320: #undef GROUP
1.115 pazsan 321: #undef GROUPADD
322: #define GROUPADD(n) +n
323: #define GROUP(x, n) , 0
1.126 anton 324: #include PRIM_GRP_I
1.90 anton 325: #undef GROUP
1.115 pazsan 326: #undef GROUPADD
1.85 pazsan 327: #define GROUP(x, n)
1.115 pazsan 328: #define GROUPADD(n)
1.85 pazsan 329: };
330:
1.161 pazsan 331: static unsigned char *branch_targets(Cell *image, const unsigned char *bitstring,
1.125 anton 332: int size, Cell base)
333: /* produce a bitmask marking all the branch targets */
334: {
1.130 anton 335: int i=0, j, k, steps=(((size-1)/sizeof(Cell))/RELINFOBITS)+1;
1.125 anton 336: Cell token;
337: unsigned char bits;
1.130 anton 338: unsigned char *result=malloc(steps);
339:
340: memset(result, 0, steps);
341: for(k=0; k<steps; k++) {
1.125 anton 342: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.130 anton 343: if(bits & (1U << (RELINFOBITS-1))) {
344: assert(i*sizeof(Cell) < size);
1.125 anton 345: token=image[i];
346: if (token>=base) { /* relocatable address */
347: UCell bitnum=(token-base)/sizeof(Cell);
1.154 anton 348: if (bitnum/RELINFOBITS < (UCell)steps)
349: result[bitnum/RELINFOBITS] |= 1U << ((~bitnum)&(RELINFOBITS-1));
1.125 anton 350: }
351: }
352: }
353: }
354: return result;
355: }
356:
1.162 pazsan 357: void gforth_relocate(Cell *image, const Char *bitstring,
358: UCell size, Cell base, Label symbols[])
1.1 anton 359: {
1.130 anton 360: int i=0, j, k, steps=(((size-1)/sizeof(Cell))/RELINFOBITS)+1;
1.11 pazsan 361: Cell token;
1.1 anton 362: char bits;
1.37 anton 363: Cell max_symbols;
1.46 jwilke 364: /*
1.85 pazsan 365: * A virtual start address that's the real start address minus
1.46 jwilke 366: * the one in the image
367: */
1.45 jwilke 368: Cell *start = (Cell * ) (((void *) image) - ((void *) base));
1.125 anton 369: unsigned char *targets = branch_targets(image, bitstring, size, base);
1.1 anton 370:
1.85 pazsan 371: /* group index into table */
1.115 pazsan 372: if(groups[31]==0) {
373: int groupsum=0;
374: for(i=0; i<32; i++) {
375: groupsum += groups[i];
376: groups[i] = groupsum;
377: /* printf("group[%d]=%d\n",i,groupsum); */
378: }
379: i=0;
380: }
1.46 jwilke 381:
382: /* printf("relocating to %x[%x] start=%x base=%x\n", image, size, start, base); */
1.37 anton 383:
1.121 anton 384: for (max_symbols=0; symbols[max_symbols]!=0; max_symbols++)
1.37 anton 385: ;
1.47 anton 386: max_symbols--;
1.35 pazsan 387:
1.130 anton 388: for(k=0; k<steps; k++) {
1.13 pazsan 389: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 390: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.130 anton 391: if(bits & (1U << (RELINFOBITS-1))) {
392: assert(i*sizeof(Cell) < size);
1.35 pazsan 393: /* fprintf(stderr,"relocate: image[%d]=%d of %d\n", i, image[i], size/sizeof(Cell)); */
1.45 jwilke 394: token=image[i];
1.85 pazsan 395: if(token<0) {
396: int group = (-token & 0x3E00) >> 9;
397: if(group == 0) {
398: switch(token|0x4000) {
1.1 anton 399: case CF_NIL : image[i]=0; break;
400: #if !defined(DOUBLY_INDIRECT)
401: case CF(DOCOL) :
402: case CF(DOVAR) :
403: case CF(DOCON) :
404: case CF(DOUSER) :
405: case CF(DODEFER) :
1.11 pazsan 406: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.92 anton 407: case CF(DOESJUMP): image[i]=0; break;
1.1 anton 408: #endif /* !defined(DOUBLY_INDIRECT) */
409: case CF(DODOES) :
1.45 jwilke 410: MAKE_DOES_CF(image+i,(Xt *)(image[i+1]+((Cell)start)));
1.1 anton 411: break;
1.85 pazsan 412: default : /* backward compatibility */
1.56 anton 413: /* printf("Code field generation image[%x]:=CFA(%x)\n",
1.1 anton 414: i, CF(image[i])); */
1.55 anton 415: if (CF((token | 0x4000))<max_symbols) {
1.56 anton 416: image[i]=(Cell)CFA(CF(token));
417: #ifdef DIRECT_THREADED
1.125 anton 418: if ((token & 0x4000) == 0) { /* threade code, no CFA */
419: if (targets[k] & (1U<<(RELINFOBITS-1-j)))
420: compile_prim1(0);
1.70 anton 421: compile_prim1(&image[i]);
1.125 anton 422: }
1.56 anton 423: #endif
1.55 anton 424: } else
1.115 pazsan 425: fprintf(stderr,"Primitive %ld used in this image at $%lx (offset $%x) is not implemented by this\n engine (%s); executing this code will crash.\n",(long)CF(token),(long)&image[i], i, PACKAGE_VERSION);
1.1 anton 426: }
1.85 pazsan 427: } else {
428: int tok = -token & 0x1FF;
429: if (tok < (groups[group+1]-groups[group])) {
430: #if defined(DOUBLY_INDIRECT)
431: image[i]=(Cell)CFA(((groups[group]+tok) | (CF(token) & 0x4000)));
432: #else
433: image[i]=(Cell)CFA((groups[group]+tok));
434: #endif
435: #ifdef DIRECT_THREADED
1.125 anton 436: if ((token & 0x4000) == 0) { /* threade code, no CFA */
437: if (targets[k] & (1U<<(RELINFOBITS-1-j)))
438: compile_prim1(0);
1.85 pazsan 439: compile_prim1(&image[i]);
1.125 anton 440: }
1.85 pazsan 441: #endif
442: } else
1.115 pazsan 443: fprintf(stderr,"Primitive %lx, %d of group %d used in this image at $%lx (offset $%x) is not implemented by this\n engine (%s); executing this code will crash.\n", (long)-token, tok, group, (long)&image[i],i,PACKAGE_VERSION);
1.85 pazsan 444: }
445: } else {
1.101 anton 446: /* if base is > 0: 0 is a null reference so don't adjust*/
1.45 jwilke 447: if (token>=base) {
448: image[i]+=(Cell)start;
449: }
1.46 jwilke 450: }
1.1 anton 451: }
452: }
1.31 pazsan 453: }
1.125 anton 454: free(targets);
1.70 anton 455: finish_code();
1.26 jwilke 456: ((ImageHeader*)(image))->base = (Address) image;
1.1 anton 457: }
458:
1.162 pazsan 459: #ifndef DOUBLY_INDIRECT
1.161 pazsan 460: static UCell checksum(Label symbols[])
1.1 anton 461: {
462: UCell r=PRIM_VERSION;
463: Cell i;
464:
465: for (i=DOCOL; i<=DOESJUMP; i++) {
466: r ^= (UCell)(symbols[i]);
467: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
468: }
469: #ifdef DIRECT_THREADED
470: /* we have to consider all the primitives */
471: for (; symbols[i]!=(Label)0; i++) {
472: r ^= (UCell)(symbols[i]);
473: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
474: }
475: #else
476: /* in indirect threaded code all primitives are accessed through the
477: symbols table, so we just have to put the base address of symbols
478: in the checksum */
479: r ^= (UCell)symbols;
480: #endif
481: return r;
482: }
1.162 pazsan 483: #endif
1.1 anton 484:
1.161 pazsan 485: static Address verbose_malloc(Cell size)
1.3 anton 486: {
487: Address r;
488: /* leave a little room (64B) for stack underflows */
489: if ((r = malloc(size+64))==NULL) {
490: perror(progname);
491: exit(1);
492: }
493: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
1.144 pazsan 494: debugp(stderr, "malloc succeeds, address=$%lx\n", (long)r);
1.3 anton 495: return r;
496: }
497:
1.33 anton 498: static Address next_address=0;
1.161 pazsan 499: static void after_alloc(Address r, Cell size)
1.33 anton 500: {
501: if (r != (Address)-1) {
1.144 pazsan 502: debugp(stderr, "success, address=$%lx\n", (long) r);
1.173 anton 503: #if 0
504: /* not needed now that we protect the stacks with mprotect */
1.33 anton 505: if (pagesize != 1)
506: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
1.173 anton 507: #endif
1.33 anton 508: } else {
1.144 pazsan 509: debugp(stderr, "failed: %s\n", strerror(errno));
1.33 anton 510: }
511: }
512:
1.34 anton 513: #ifndef MAP_FAILED
514: #define MAP_FAILED ((Address) -1)
515: #endif
516: #ifndef MAP_FILE
517: # define MAP_FILE 0
518: #endif
519: #ifndef MAP_PRIVATE
520: # define MAP_PRIVATE 0
521: #endif
1.91 anton 522: #if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
523: # define MAP_ANON MAP_ANONYMOUS
524: #endif
1.34 anton 525:
526: #if defined(HAVE_MMAP)
527: static Address alloc_mmap(Cell size)
1.1 anton 528: {
529: Address r;
530:
531: #if defined(MAP_ANON)
1.144 pazsan 532: debugp(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
1.34 anton 533: r = mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
1.1 anton 534: #else /* !defined(MAP_ANON) */
1.17 anton 535: /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
536: apparently defaults) */
1.1 anton 537: static int dev_zero=-1;
538:
539: if (dev_zero == -1)
540: dev_zero = open("/dev/zero", O_RDONLY);
541: if (dev_zero == -1) {
1.34 anton 542: r = MAP_FAILED;
1.144 pazsan 543: debugp(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
1.1 anton 544: strerror(errno));
545: } else {
1.144 pazsan 546: debugp(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
1.1 anton 547: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
548: }
549: #endif /* !defined(MAP_ANON) */
1.34 anton 550: after_alloc(r, size);
551: return r;
552: }
1.172 anton 553:
554: static void page_noaccess(Address a)
555: {
556: /* try mprotect first; with munmap the page might be allocated later */
557: debugp(stderr, "try mprotect(%p,%ld,PROT_NONE); ", a, (long)pagesize);
558: if (mprotect(a, pagesize, PROT_NONE)==0) {
559: debugp(stderr, "ok\n");
560: return;
561: }
562: debugp(stderr, "failed: %s\n", strerror(errno));
563: debugp(stderr, "try munmap(%p,%ld); ", a, (long)pagesize);
564: if (munmap(a,pagesize)==0) {
565: debugp(stderr, "ok\n");
566: return;
567: }
568: debugp(stderr, "failed: %s\n", strerror(errno));
569: }
570:
1.173 anton 571: static size_t wholepage(size_t n)
1.172 anton 572: {
573: return (n+pagesize-1)&~(pagesize-1);
574: }
1.34 anton 575: #endif
576:
1.161 pazsan 577: Address gforth_alloc(Cell size)
1.34 anton 578: {
579: #if HAVE_MMAP
580: Address r;
581:
582: r=alloc_mmap(size);
1.117 anton 583: if (r!=(Address)MAP_FAILED)
1.1 anton 584: return r;
585: #endif /* HAVE_MMAP */
1.3 anton 586: /* use malloc as fallback */
587: return verbose_malloc(size);
1.1 anton 588: }
589:
1.161 pazsan 590: static Address dict_alloc_read(FILE *file, Cell imagesize, Cell dictsize, Cell offset)
1.33 anton 591: {
1.34 anton 592: Address image = MAP_FAILED;
1.33 anton 593:
1.56 anton 594: #if defined(HAVE_MMAP)
1.33 anton 595: if (offset==0) {
1.34 anton 596: image=alloc_mmap(dictsize);
1.150 anton 597: if (image != (Address)MAP_FAILED) {
598: Address image1;
599: debugp(stderr,"try mmap($%lx, $%lx, ..., MAP_FIXED|MAP_FILE, imagefile, 0); ", (long)image, (long)imagesize);
600: image1 = mmap(image, imagesize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FIXED|MAP_FILE|MAP_PRIVATE, fileno(file), 0);
601: after_alloc(image1,dictsize);
602: if (image1 == (Address)MAP_FAILED)
603: goto read_image;
604: }
1.33 anton 605: }
1.56 anton 606: #endif /* defined(HAVE_MMAP) */
1.117 anton 607: if (image == (Address)MAP_FAILED) {
1.161 pazsan 608: image = gforth_alloc(dictsize+offset)+offset;
1.149 anton 609: read_image:
1.33 anton 610: rewind(file); /* fseek(imagefile,0L,SEEK_SET); */
1.34 anton 611: fread(image, 1, imagesize, file);
1.33 anton 612: }
613: return image;
614: }
1.175 pazsan 615: #endif
1.33 anton 616:
1.10 pazsan 617: void set_stack_sizes(ImageHeader * header)
618: {
619: if (dictsize==0)
620: dictsize = header->dict_size;
621: if (dsize==0)
622: dsize = header->data_stack_size;
623: if (rsize==0)
624: rsize = header->return_stack_size;
625: if (fsize==0)
626: fsize = header->fp_stack_size;
627: if (lsize==0)
628: lsize = header->locals_stack_size;
629: dictsize=maxaligned(dictsize);
630: dsize=maxaligned(dsize);
631: rsize=maxaligned(rsize);
632: lsize=maxaligned(lsize);
633: fsize=maxaligned(fsize);
634: }
635:
1.173 anton 636: void alloc_stacks(ImageHeader * h)
1.10 pazsan 637: {
1.173 anton 638: h->dict_size=dictsize;
639: h->data_stack_size=dsize;
640: h->fp_stack_size=fsize;
641: h->return_stack_size=rsize;
642: h->locals_stack_size=lsize;
1.10 pazsan 643:
1.176 ! pazsan 644: #if defined(HAVE_MMAP) && !defined(STANDALONE)
1.172 anton 645: if (pagesize > 1) {
1.173 anton 646: size_t p = pagesize;
647: size_t totalsize =
648: wholepage(dsize)+wholepage(fsize)+wholepage(rsize)+wholepage(lsize)+5*p;
1.172 anton 649: Address a = alloc_mmap(totalsize);
650: if (a != (Address)MAP_FAILED) {
1.173 anton 651: page_noaccess(a); a+=p; h-> data_stack_base=a; a+=wholepage(dsize);
652: page_noaccess(a); a+=p; h-> fp_stack_base=a; a+=wholepage(fsize);
653: page_noaccess(a); a+=p; h->return_stack_base=a; a+=wholepage(rsize);
654: page_noaccess(a); a+=p; h->locals_stack_base=a; a+=wholepage(lsize);
1.172 anton 655: page_noaccess(a);
656: debugp(stderr,"stack addresses: d=%p f=%p r=%p l=%p\n",
1.173 anton 657: h->data_stack_base,
658: h->fp_stack_base,
659: h->return_stack_base,
660: h->locals_stack_base);
1.172 anton 661: return;
662: }
663: }
664: #endif
1.173 anton 665: h->data_stack_base=gforth_alloc(dsize);
666: h->fp_stack_base=gforth_alloc(fsize);
667: h->return_stack_base=gforth_alloc(rsize);
668: h->locals_stack_base=gforth_alloc(lsize);
1.10 pazsan 669: }
670:
1.161 pazsan 671: #warning You can ignore the warnings about clobbered variables in gforth_go
672: int gforth_go(Address image, int stack, Cell *entries)
1.11 pazsan 673: {
1.38 anton 674: volatile ImageHeader *image_header = (ImageHeader *)image;
1.18 anton 675: Cell *sp0=(Cell*)(image_header->data_stack_base + dsize);
1.44 pazsan 676: Cell *rp0=(Cell *)(image_header->return_stack_base + rsize);
1.18 anton 677: Float *fp0=(Float *)(image_header->fp_stack_base + fsize);
1.44 pazsan 678: #ifdef GFORTH_DEBUGGING
1.38 anton 679: volatile Cell *orig_rp0=rp0;
1.44 pazsan 680: #endif
1.18 anton 681: Address lp0=image_header->locals_stack_base + lsize;
682: Xt *ip0=(Xt *)(image_header->boot_entry);
1.13 pazsan 683: #ifdef SYSSIGNALS
1.11 pazsan 684: int throw_code;
1.13 pazsan 685: #endif
1.11 pazsan 686:
687: /* ensure that the cached elements (if any) are accessible */
1.151 anton 688: #if !(defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING))
689: sp0 -= 8; /* make stuff below bottom accessible for stack caching */
690: #endif
1.41 anton 691: IF_fpTOS(fp0--);
1.11 pazsan 692:
693: for(;stack>0;stack--)
1.18 anton 694: *--sp0=entries[stack-1];
1.11 pazsan 695:
1.30 pazsan 696: #ifdef SYSSIGNALS
1.11 pazsan 697: get_winsize();
698:
699: install_signal_handlers(); /* right place? */
700:
701: if ((throw_code=setjmp(throw_jmp_buf))) {
1.152 anton 702: static Cell signal_data_stack[24];
703: static Cell signal_return_stack[16];
1.11 pazsan 704: static Float signal_fp_stack[1];
1.13 pazsan 705:
1.152 anton 706: signal_data_stack[15]=throw_code;
1.18 anton 707:
708: #ifdef GFORTH_DEBUGGING
1.144 pazsan 709: debugp(stderr,"\ncaught signal, throwing exception %d, ip=%p rp=%p\n",
1.97 anton 710: throw_code, saved_ip, rp);
1.38 anton 711: if (rp <= orig_rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
1.18 anton 712: /* no rstack overflow or underflow */
713: rp0 = rp;
1.63 anton 714: *--rp0 = (Cell)saved_ip;
1.18 anton 715: }
716: else /* I love non-syntactic ifdefs :-) */
1.152 anton 717: rp0 = signal_return_stack+16;
1.97 anton 718: #else /* !defined(GFORTH_DEBUGGING) */
1.144 pazsan 719: debugp(stderr,"\ncaught signal, throwing exception %d\n", throw_code);
1.152 anton 720: rp0 = signal_return_stack+16;
1.97 anton 721: #endif /* !defined(GFORTH_DEBUGGING) */
1.25 anton 722: /* fprintf(stderr, "rp=$%x\n",rp0);*/
1.11 pazsan 723:
1.164 pazsan 724: return((int)(Cell)gforth_engine(image_header->throw_entry, signal_data_stack+15,
1.18 anton 725: rp0, signal_fp_stack, 0));
1.11 pazsan 726: }
1.13 pazsan 727: #endif
1.11 pazsan 728:
1.164 pazsan 729: return((int)(Cell)gforth_engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 730: }
731:
1.30 pazsan 732: #ifndef INCLUDE_IMAGE
1.161 pazsan 733: static void print_sizes(Cell sizebyte)
1.21 anton 734: /* print size information */
735: {
736: static char* endianstring[]= { " big","little" };
737:
738: fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n",
739: endianstring[sizebyte & 1],
740: 1 << ((sizebyte >> 1) & 3),
741: 1 << ((sizebyte >> 3) & 3),
742: 1 << ((sizebyte >> 5) & 3));
743: }
744:
1.106 anton 745: /* static superinstruction stuff */
746:
1.141 anton 747: struct cost { /* super_info might be a more accurate name */
1.106 anton 748: char loads; /* number of stack loads */
749: char stores; /* number of stack stores */
750: char updates; /* number of stack pointer updates */
1.123 anton 751: char branch; /* is it a branch (SET_IP) */
1.125 anton 752: unsigned char state_in; /* state on entry */
753: unsigned char state_out; /* state on exit */
1.142 anton 754: unsigned char imm_ops; /* number of immediate operands */
1.123 anton 755: short offset; /* offset into super2 table */
1.125 anton 756: unsigned char length; /* number of components */
1.106 anton 757: };
758:
1.121 anton 759: PrimNum super2[] = {
1.126 anton 760: #include SUPER2_I
1.106 anton 761: };
762:
763: struct cost super_costs[] = {
1.126 anton 764: #include COSTS_I
1.106 anton 765: };
766:
1.125 anton 767: struct super_state {
768: struct super_state *next;
769: PrimNum super;
770: };
771:
1.106 anton 772: #define HASH_SIZE 256
773:
774: struct super_table_entry {
775: struct super_table_entry *next;
1.121 anton 776: PrimNum *start;
1.106 anton 777: short length;
1.125 anton 778: struct super_state *ss_list; /* list of supers */
1.106 anton 779: } *super_table[HASH_SIZE];
780: int max_super=2;
781:
1.125 anton 782: struct super_state *state_transitions=NULL;
783:
1.161 pazsan 784: static int hash_super(PrimNum *start, int length)
1.106 anton 785: {
786: int i, r;
787:
788: for (i=0, r=0; i<length; i++) {
789: r <<= 1;
790: r += start[i];
791: }
792: return r & (HASH_SIZE-1);
793: }
794:
1.161 pazsan 795: static struct super_state **lookup_super(PrimNum *start, int length)
1.106 anton 796: {
797: int hash=hash_super(start,length);
798: struct super_table_entry *p = super_table[hash];
799:
1.125 anton 800: /* assert(length >= 2); */
1.106 anton 801: for (; p!=NULL; p = p->next) {
802: if (length == p->length &&
1.121 anton 803: memcmp((char *)p->start, (char *)start, length*sizeof(PrimNum))==0)
1.125 anton 804: return &(p->ss_list);
1.106 anton 805: }
1.125 anton 806: return NULL;
1.106 anton 807: }
808:
1.161 pazsan 809: static void prepare_super_table()
1.106 anton 810: {
811: int i;
1.109 anton 812: int nsupers = 0;
1.106 anton 813:
814: for (i=0; i<sizeof(super_costs)/sizeof(super_costs[0]); i++) {
815: struct cost *c = &super_costs[i];
1.125 anton 816: if ((c->length < 2 || nsupers < static_super_number) &&
817: c->state_in < maxstates && c->state_out < maxstates) {
818: struct super_state **ss_listp= lookup_super(super2+c->offset, c->length);
819: struct super_state *ss = malloc(sizeof(struct super_state));
820: ss->super= i;
821: if (c->offset==N_noop && i != N_noop) {
822: if (is_relocatable(i)) {
823: ss->next = state_transitions;
824: state_transitions = ss;
825: }
826: } else if (ss_listp != NULL) {
827: ss->next = *ss_listp;
828: *ss_listp = ss;
829: } else {
830: int hash = hash_super(super2+c->offset, c->length);
831: struct super_table_entry **p = &super_table[hash];
832: struct super_table_entry *e = malloc(sizeof(struct super_table_entry));
833: ss->next = NULL;
834: e->next = *p;
835: e->start = super2 + c->offset;
836: e->length = c->length;
837: e->ss_list = ss;
838: *p = e;
839: }
1.106 anton 840: if (c->length > max_super)
841: max_super = c->length;
1.125 anton 842: if (c->length >= 2)
843: nsupers++;
1.106 anton 844: }
845: }
1.144 pazsan 846: debugp(stderr, "Using %d static superinsts\n", nsupers);
1.106 anton 847: }
848:
849: /* dynamic replication/superinstruction stuff */
850:
1.69 anton 851: #ifndef NO_DYNAMIC
1.161 pazsan 852: static int compare_priminfo_length(const void *_a, const void *_b)
1.76 anton 853: {
1.90 anton 854: PrimInfo **a = (PrimInfo **)_a;
855: PrimInfo **b = (PrimInfo **)_b;
1.77 anton 856: Cell diff = (*a)->length - (*b)->length;
857: if (diff)
858: return diff;
859: else /* break ties by start address; thus the decompiler produces
860: the earliest primitive with the same code (e.g. noop instead
861: of (char) and @ instead of >code-address */
862: return (*b)->start - (*a)->start;
1.76 anton 863: }
1.112 anton 864: #endif /* !defined(NO_DYNAMIC) */
1.76 anton 865:
1.125 anton 866: static char MAYBE_UNUSED superend[]={
1.126 anton 867: #include PRIM_SUPEREND_I
1.106 anton 868: };
1.107 anton 869:
870: Cell npriminfos=0;
1.76 anton 871:
1.146 anton 872: Label goto_start;
873: Cell goto_len;
874:
1.162 pazsan 875: #ifndef NO_DYNAMIC
1.161 pazsan 876: static int compare_labels(const void *pa, const void *pb)
1.113 anton 877: {
1.114 anton 878: Label a = *(Label *)pa;
879: Label b = *(Label *)pb;
880: return a-b;
881: }
1.162 pazsan 882: #endif
1.113 anton 883:
1.161 pazsan 884: static Label bsearch_next(Label key, Label *a, UCell n)
1.114 anton 885: /* a is sorted; return the label >=key that is the closest in a;
886: return NULL if there is no label in a >=key */
887: {
888: int mid = (n-1)/2;
889: if (n<1)
890: return NULL;
891: if (n == 1) {
892: if (a[0] < key)
893: return NULL;
894: else
895: return a[0];
896: }
897: if (a[mid] < key)
898: return bsearch_next(key, a+mid+1, n-mid-1);
899: else
900: return bsearch_next(key, a, mid+1);
1.113 anton 901: }
902:
1.161 pazsan 903: static void check_prims(Label symbols1[])
1.47 anton 904: {
905: int i;
1.90 anton 906: #ifndef NO_DYNAMIC
1.146 anton 907: Label *symbols2, *symbols3, *ends1, *ends1j, *ends1jsorted, *goto_p;
1.119 anton 908: int nends1j;
1.90 anton 909: #endif
1.47 anton 910:
1.66 anton 911: if (debug)
912: #ifdef __VERSION__
913: fprintf(stderr, "Compiled with gcc-" __VERSION__ "\n");
914: #else
915: #define xstr(s) str(s)
916: #define str(s) #s
917: fprintf(stderr, "Compiled with gcc-" xstr(__GNUC__) "." xstr(__GNUC_MINOR__) "\n");
918: #endif
1.121 anton 919: for (i=0; symbols1[i]!=0; i++)
1.47 anton 920: ;
1.55 anton 921: npriminfos = i;
1.70 anton 922:
923: #ifndef NO_DYNAMIC
1.66 anton 924: if (no_dynamic)
925: return;
1.164 pazsan 926: symbols2=gforth_engine2(0,0,0,0,0);
1.70 anton 927: #if NO_IP
1.164 pazsan 928: symbols3=gforth_engine3(0,0,0,0,0);
1.70 anton 929: #else
930: symbols3=symbols1;
931: #endif
1.121 anton 932: ends1 = symbols1+i+1;
1.119 anton 933: ends1j = ends1+i;
1.146 anton 934: goto_p = ends1j+i+1; /* goto_p[0]==before; ...[1]==after;*/
1.121 anton 935: nends1j = i+1;
1.119 anton 936: ends1jsorted = (Label *)alloca(nends1j*sizeof(Label));
937: memcpy(ends1jsorted,ends1j,nends1j*sizeof(Label));
938: qsort(ends1jsorted, nends1j, sizeof(Label), compare_labels);
1.146 anton 939:
940: /* check whether the "goto *" is relocatable */
941: goto_len = goto_p[1]-goto_p[0];
942: debugp(stderr, "goto * %p %p len=%ld\n",
943: goto_p[0],symbols2[goto_p-symbols1],goto_len);
944: if (memcmp(goto_p[0],symbols2[goto_p-symbols1],goto_len)!=0) { /* unequal */
945: no_dynamic=1;
946: debugp(stderr," not relocatable, disabling dynamic code generation\n");
1.148 anton 947: init_ss_cost();
1.146 anton 948: return;
949: }
950: goto_start = goto_p[0];
1.113 anton 951:
1.47 anton 952: priminfos = calloc(i,sizeof(PrimInfo));
1.121 anton 953: for (i=0; symbols1[i]!=0; i++) {
1.70 anton 954: int prim_len = ends1[i]-symbols1[i];
1.47 anton 955: PrimInfo *pi=&priminfos[i];
1.154 anton 956: struct cost *sc=&super_costs[i];
1.70 anton 957: int j=0;
958: char *s1 = (char *)symbols1[i];
959: char *s2 = (char *)symbols2[i];
960: char *s3 = (char *)symbols3[i];
1.119 anton 961: Label endlabel = bsearch_next(symbols1[i]+1,ends1jsorted,nends1j);
1.70 anton 962:
963: pi->start = s1;
1.121 anton 964: pi->superend = superend[i]|no_super;
1.147 anton 965: pi->length = prim_len;
1.113 anton 966: pi->restlength = endlabel - symbols1[i] - pi->length;
1.70 anton 967: pi->nimmargs = 0;
1.144 pazsan 968: relocs++;
1.154 anton 969: debugp(stderr, "%-15s %d-%d %4d %p %p %p len=%3ld rest=%2ld send=%1d",
970: prim_names[i], sc->state_in, sc->state_out,
971: i, s1, s2, s3, (long)(pi->length), (long)(pi->restlength),
972: pi->superend);
1.114 anton 973: if (endlabel == NULL) {
974: pi->start = NULL; /* not relocatable */
1.122 anton 975: if (pi->length<0) pi->length=100;
1.144 pazsan 976: debugp(stderr,"\n non_reloc: no J label > start found\n");
977: relocs--;
978: nonrelocs++;
1.114 anton 979: continue;
980: }
981: if (ends1[i] > endlabel && !pi->superend) {
1.113 anton 982: pi->start = NULL; /* not relocatable */
1.122 anton 983: pi->length = endlabel-symbols1[i];
1.144 pazsan 984: debugp(stderr,"\n non_reloc: there is a J label before the K label (restlength<0)\n");
985: relocs--;
986: nonrelocs++;
1.113 anton 987: continue;
988: }
1.114 anton 989: if (ends1[i] < pi->start && !pi->superend) {
1.113 anton 990: pi->start = NULL; /* not relocatable */
1.122 anton 991: pi->length = endlabel-symbols1[i];
1.144 pazsan 992: debugp(stderr,"\n non_reloc: K label before I label (length<0)\n");
993: relocs--;
994: nonrelocs++;
1.113 anton 995: continue;
996: }
1.138 anton 997: assert(pi->length>=0);
1.113 anton 998: assert(pi->restlength >=0);
1.74 anton 999: while (j<(pi->length+pi->restlength)) {
1.70 anton 1000: if (s1[j]==s3[j]) {
1001: if (s1[j] != s2[j]) {
1002: pi->start = NULL; /* not relocatable */
1.144 pazsan 1003: debugp(stderr,"\n non_reloc: engine1!=engine2 offset %3d",j);
1.74 anton 1004: /* assert(j<prim_len); */
1.144 pazsan 1005: relocs--;
1006: nonrelocs++;
1.70 anton 1007: break;
1008: }
1009: j++;
1010: } else {
1011: struct immarg *ia=&pi->immargs[pi->nimmargs];
1012:
1013: pi->nimmargs++;
1014: ia->offset=j;
1015: if ((~*(Cell *)&(s1[j]))==*(Cell *)&(s3[j])) {
1016: ia->rel=0;
1.144 pazsan 1017: debugp(stderr,"\n absolute immarg: offset %3d",j);
1.70 anton 1018: } else if ((&(s1[j]))+(*(Cell *)&(s1[j]))+4 ==
1019: symbols1[DOESJUMP+1]) {
1020: ia->rel=1;
1.144 pazsan 1021: debugp(stderr,"\n relative immarg: offset %3d",j);
1.70 anton 1022: } else {
1023: pi->start = NULL; /* not relocatable */
1.144 pazsan 1024: debugp(stderr,"\n non_reloc: engine1!=engine3 offset %3d",j);
1.74 anton 1025: /* assert(j<prim_len);*/
1.144 pazsan 1026: relocs--;
1027: nonrelocs++;
1.70 anton 1028: break;
1029: }
1030: j+=4;
1.47 anton 1031: }
1032: }
1.144 pazsan 1033: debugp(stderr,"\n");
1.70 anton 1034: }
1.76 anton 1035: decomp_prims = calloc(i,sizeof(PrimInfo *));
1036: for (i=DOESJUMP+1; i<npriminfos; i++)
1037: decomp_prims[i] = &(priminfos[i]);
1038: qsort(decomp_prims+DOESJUMP+1, npriminfos-DOESJUMP-1, sizeof(PrimInfo *),
1039: compare_priminfo_length);
1.70 anton 1040: #endif
1041: }
1042:
1.161 pazsan 1043: static void flush_to_here(void)
1.74 anton 1044: {
1.93 anton 1045: #ifndef NO_DYNAMIC
1.100 anton 1046: if (start_flush)
1047: FLUSH_ICACHE(start_flush, code_here-start_flush);
1.74 anton 1048: start_flush=code_here;
1.93 anton 1049: #endif
1.74 anton 1050: }
1051:
1.93 anton 1052: #ifndef NO_DYNAMIC
1.161 pazsan 1053: static void append_jump(void)
1.74 anton 1054: {
1055: if (last_jump) {
1056: PrimInfo *pi = &priminfos[last_jump];
1057:
1058: memcpy(code_here, pi->start+pi->length, pi->restlength);
1059: code_here += pi->restlength;
1.147 anton 1060: memcpy(code_here, goto_start, goto_len);
1061: code_here += goto_len;
1.74 anton 1062: last_jump=0;
1063: }
1064: }
1065:
1.75 anton 1066: /* Gforth remembers all code blocks in this list. On forgetting (by
1067: executing a marker) the code blocks are not freed (because Gforth does
1068: not remember how they were allocated; hmm, remembering that might be
1069: easier and cleaner). Instead, code_here etc. are reset to the old
1070: value, and the "forgotten" code blocks are reused when they are
1071: needed. */
1072:
1073: struct code_block_list {
1074: struct code_block_list *next;
1075: Address block;
1076: Cell size;
1077: } *code_block_list=NULL, **next_code_blockp=&code_block_list;
1078:
1.161 pazsan 1079: static Address append_prim(Cell p)
1.74 anton 1080: {
1081: PrimInfo *pi = &priminfos[p];
1082: Address old_code_here = code_here;
1083:
1.159 anton 1084: if (code_area+code_area_size < code_here+pi->length+pi->restlength+goto_len) {
1.75 anton 1085: struct code_block_list *p;
1.74 anton 1086: append_jump();
1.93 anton 1087: flush_to_here();
1.75 anton 1088: if (*next_code_blockp == NULL) {
1.161 pazsan 1089: code_here = start_flush = code_area = gforth_alloc(code_area_size);
1.75 anton 1090: p = (struct code_block_list *)malloc(sizeof(struct code_block_list));
1091: *next_code_blockp = p;
1092: p->next = NULL;
1093: p->block = code_here;
1094: p->size = code_area_size;
1095: } else {
1096: p = *next_code_blockp;
1097: code_here = start_flush = code_area = p->block;
1098: }
1.74 anton 1099: old_code_here = code_here;
1.75 anton 1100: next_code_blockp = &(p->next);
1.74 anton 1101: }
1102: memcpy(code_here, pi->start, pi->length);
1103: code_here += pi->length;
1104: return old_code_here;
1105: }
1106: #endif
1.75 anton 1107:
1.176 ! pazsan 1108: #ifdef STANDALONE
! 1109: Address gforth_alloc(Cell size)
! 1110: {
! 1111: Address r;
! 1112: /* leave a little room (64B) for stack underflows */
! 1113: if ((r = malloc(size+64))==NULL) {
! 1114: perror(progname);
! 1115: exit(1);
! 1116: }
! 1117: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
! 1118: debugp(stderr, "malloc succeeds, address=$%lx\n", (long)r);
! 1119: return r;
! 1120: }
! 1121: #endif
! 1122:
1.75 anton 1123: int forget_dyncode(Address code)
1124: {
1125: #ifdef NO_DYNAMIC
1126: return -1;
1127: #else
1128: struct code_block_list *p, **pp;
1129:
1130: for (pp=&code_block_list, p=*pp; p!=NULL; pp=&(p->next), p=*pp) {
1131: if (code >= p->block && code < p->block+p->size) {
1132: next_code_blockp = &(p->next);
1133: code_here = start_flush = code;
1134: code_area = p->block;
1135: last_jump = 0;
1136: return -1;
1137: }
1138: }
1.78 anton 1139: return -no_dynamic;
1.75 anton 1140: #endif /* !defined(NO_DYNAMIC) */
1141: }
1142:
1.161 pazsan 1143: static long dyncodesize(void)
1.104 anton 1144: {
1145: #ifndef NO_DYNAMIC
1.106 anton 1146: struct code_block_list *p;
1.104 anton 1147: long size=0;
1148: for (p=code_block_list; p!=NULL; p=p->next) {
1149: if (code_here >= p->block && code_here < p->block+p->size)
1150: return size + (code_here - p->block);
1151: else
1152: size += p->size;
1153: }
1154: #endif /* !defined(NO_DYNAMIC) */
1155: return 0;
1156: }
1157:
1.90 anton 1158: Label decompile_code(Label _code)
1.75 anton 1159: {
1.76 anton 1160: #ifdef NO_DYNAMIC
1.90 anton 1161: return _code;
1.76 anton 1162: #else /* !defined(NO_DYNAMIC) */
1163: Cell i;
1.77 anton 1164: struct code_block_list *p;
1.90 anton 1165: Address code=_code;
1.76 anton 1166:
1.77 anton 1167: /* first, check if we are in code at all */
1168: for (p = code_block_list;; p = p->next) {
1169: if (p == NULL)
1170: return code;
1171: if (code >= p->block && code < p->block+p->size)
1172: break;
1173: }
1.76 anton 1174: /* reverse order because NOOP might match other prims */
1175: for (i=npriminfos-1; i>DOESJUMP; i--) {
1176: PrimInfo *pi=decomp_prims[i];
1177: if (pi->start==code || (pi->start && memcmp(code,pi->start,pi->length)==0))
1.121 anton 1178: return vm_prims[super2[super_costs[pi-priminfos].offset]];
1.118 anton 1179: /* return pi->start;*/
1.76 anton 1180: }
1181: return code;
1182: #endif /* !defined(NO_DYNAMIC) */
1.75 anton 1183: }
1.74 anton 1184:
1.70 anton 1185: #ifdef NO_IP
1186: int nbranchinfos=0;
1187:
1188: struct branchinfo {
1.136 anton 1189: Label **targetpp; /* **(bi->targetpp) is the target */
1.70 anton 1190: Cell *addressptr; /* store the target here */
1191: } branchinfos[100000];
1192:
1193: int ndoesexecinfos=0;
1194: struct doesexecinfo {
1195: int branchinfo; /* fix the targetptr of branchinfos[...->branchinfo] */
1.136 anton 1196: Label *targetp; /*target for branch (because this is not in threaded code)*/
1.70 anton 1197: Cell *xt; /* cfa of word whose does-code needs calling */
1198: } doesexecinfos[10000];
1199:
1.161 pazsan 1200: static void set_rel_target(Cell *source, Label target)
1.70 anton 1201: {
1202: *source = ((Cell)target)-(((Cell)source)+4);
1203: }
1204:
1.161 pazsan 1205: static void register_branchinfo(Label source, Cell *targetpp)
1.70 anton 1206: {
1207: struct branchinfo *bi = &(branchinfos[nbranchinfos]);
1.136 anton 1208: bi->targetpp = (Label **)targetpp;
1.70 anton 1209: bi->addressptr = (Cell *)source;
1210: nbranchinfos++;
1211: }
1212:
1.161 pazsan 1213: static Address compile_prim1arg(PrimNum p, Cell **argp)
1.70 anton 1214: {
1.133 anton 1215: Address old_code_here=append_prim(p);
1.70 anton 1216:
1.74 anton 1217: assert(vm_prims[p]==priminfos[p].start);
1.133 anton 1218: *argp = (Cell*)(old_code_here+priminfos[p].immargs[0].offset);
1219: return old_code_here;
1.70 anton 1220: }
1221:
1.161 pazsan 1222: static Address compile_call2(Cell *targetpp, Cell **next_code_targetp)
1.70 anton 1223: {
1.73 anton 1224: PrimInfo *pi = &priminfos[N_call2];
1.74 anton 1225: Address old_code_here = append_prim(N_call2);
1.70 anton 1226:
1.134 anton 1227: *next_code_targetp = (Cell *)(old_code_here + pi->immargs[0].offset);
1.136 anton 1228: register_branchinfo(old_code_here + pi->immargs[1].offset, targetpp);
1.134 anton 1229: return old_code_here;
1.70 anton 1230: }
1231: #endif
1232:
1233: void finish_code(void)
1234: {
1235: #ifdef NO_IP
1236: Cell i;
1237:
1238: compile_prim1(NULL);
1239: for (i=0; i<ndoesexecinfos; i++) {
1240: struct doesexecinfo *dei = &doesexecinfos[i];
1.136 anton 1241: dei->targetp = (Label *)DOES_CODE1((dei->xt));
1242: branchinfos[dei->branchinfo].targetpp = &(dei->targetp);
1.70 anton 1243: }
1244: ndoesexecinfos = 0;
1245: for (i=0; i<nbranchinfos; i++) {
1246: struct branchinfo *bi=&branchinfos[i];
1.136 anton 1247: set_rel_target(bi->addressptr, **(bi->targetpp));
1.70 anton 1248: }
1249: nbranchinfos = 0;
1.128 anton 1250: #else
1251: compile_prim1(NULL);
1.48 anton 1252: #endif
1.93 anton 1253: flush_to_here();
1.48 anton 1254: }
1255:
1.162 pazsan 1256: #if !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED))
1.128 anton 1257: #ifdef NO_IP
1.161 pazsan 1258: static Cell compile_prim_dyn(PrimNum p, Cell *tcp)
1.128 anton 1259: /* compile prim #p dynamically (mod flags etc.) and return start
1260: address of generated code for putting it into the threaded
1261: code. This function is only called if all the associated
1262: inline arguments of p are already in place (at tcp[1] etc.) */
1263: {
1264: PrimInfo *pi=&priminfos[p];
1265: Cell *next_code_target=NULL;
1.135 anton 1266: Address codeaddr;
1267: Address primstart;
1.128 anton 1268:
1269: assert(p<npriminfos);
1270: if (p==N_execute || p==N_perform || p==N_lit_perform) {
1.134 anton 1271: codeaddr = compile_prim1arg(N_set_next_code, &next_code_target);
1.135 anton 1272: primstart = append_prim(p);
1273: goto other_prim;
1274: } else if (p==N_call) {
1.136 anton 1275: codeaddr = compile_call2(tcp+1, &next_code_target);
1.128 anton 1276: } else if (p==N_does_exec) {
1277: struct doesexecinfo *dei = &doesexecinfos[ndoesexecinfos++];
1.133 anton 1278: Cell *arg;
1279: codeaddr = compile_prim1arg(N_lit,&arg);
1280: *arg = (Cell)PFA(tcp[1]);
1.128 anton 1281: /* we cannot determine the callee now (last_start[1] may be a
1282: forward reference), so just register an arbitrary target, and
1283: register in dei that we need to fix this before resolving
1284: branches */
1285: dei->branchinfo = nbranchinfos;
1286: dei->xt = (Cell *)(tcp[1]);
1.134 anton 1287: compile_call2(0, &next_code_target);
1.128 anton 1288: } else if (!is_relocatable(p)) {
1.133 anton 1289: Cell *branch_target;
1290: codeaddr = compile_prim1arg(N_set_next_code, &next_code_target);
1291: compile_prim1arg(N_branch,&branch_target);
1292: set_rel_target(branch_target,vm_prims[p]);
1.128 anton 1293: } else {
1294: unsigned j;
1.135 anton 1295:
1296: codeaddr = primstart = append_prim(p);
1297: other_prim:
1.128 anton 1298: for (j=0; j<pi->nimmargs; j++) {
1299: struct immarg *ia = &(pi->immargs[j]);
1.136 anton 1300: Cell *argp = tcp + pi->nimmargs - j;
1301: Cell argval = *argp; /* !! specific to prims */
1.128 anton 1302: if (ia->rel) { /* !! assumption: relative refs are branches */
1.136 anton 1303: register_branchinfo(primstart + ia->offset, argp);
1.128 anton 1304: } else /* plain argument */
1.135 anton 1305: *(Cell *)(primstart + ia->offset) = argval;
1.128 anton 1306: }
1307: }
1308: if (next_code_target!=NULL)
1309: *next_code_target = (Cell)code_here;
1.135 anton 1310: return (Cell)codeaddr;
1.128 anton 1311: }
1312: #else /* !defined(NO_IP) */
1.161 pazsan 1313: static Cell compile_prim_dyn(PrimNum p, Cell *tcp)
1.128 anton 1314: /* compile prim #p dynamically (mod flags etc.) and return start
1315: address of generated code for putting it into the threaded code */
1.108 anton 1316: {
1.121 anton 1317: Cell static_prim = (Cell)vm_prims[p];
1.108 anton 1318: #if defined(NO_DYNAMIC)
1319: return static_prim;
1320: #else /* !defined(NO_DYNAMIC) */
1321: Address old_code_here;
1322:
1323: if (no_dynamic)
1324: return static_prim;
1.125 anton 1325: if (p>=npriminfos || !is_relocatable(p)) {
1.108 anton 1326: append_jump();
1327: return static_prim;
1328: }
1329: old_code_here = append_prim(p);
1.147 anton 1330: last_jump = p;
1331: if (priminfos[p].superend)
1332: append_jump();
1.108 anton 1333: return (Cell)old_code_here;
1334: #endif /* !defined(NO_DYNAMIC) */
1335: }
1.128 anton 1336: #endif /* !defined(NO_IP) */
1.162 pazsan 1337: #endif
1.70 anton 1338:
1.109 anton 1339: #ifndef NO_DYNAMIC
1.161 pazsan 1340: static int cost_codesize(int prim)
1.109 anton 1341: {
1.121 anton 1342: return priminfos[prim].length;
1.109 anton 1343: }
1344: #endif
1345:
1.161 pazsan 1346: static int cost_ls(int prim)
1.109 anton 1347: {
1348: struct cost *c = super_costs+prim;
1349:
1350: return c->loads + c->stores;
1351: }
1352:
1.161 pazsan 1353: static int cost_lsu(int prim)
1.109 anton 1354: {
1355: struct cost *c = super_costs+prim;
1356:
1357: return c->loads + c->stores + c->updates;
1358: }
1359:
1.161 pazsan 1360: static int cost_nexts(int prim)
1.109 anton 1361: {
1362: return 1;
1363: }
1364:
1365: typedef int Costfunc(int);
1366: Costfunc *ss_cost = /* cost function for optimize_bb */
1367: #ifdef NO_DYNAMIC
1368: cost_lsu;
1369: #else
1370: cost_codesize;
1371: #endif
1372:
1.110 anton 1373: struct {
1374: Costfunc *costfunc;
1375: char *metricname;
1376: long sum;
1377: } cost_sums[] = {
1378: #ifndef NO_DYNAMIC
1379: { cost_codesize, "codesize", 0 },
1380: #endif
1381: { cost_ls, "ls", 0 },
1382: { cost_lsu, "lsu", 0 },
1383: { cost_nexts, "nexts", 0 }
1384: };
1385:
1.148 anton 1386: #ifndef NO_DYNAMIC
1387: void init_ss_cost(void) {
1388: if (no_dynamic && ss_cost == cost_codesize) {
1389: ss_cost = cost_nexts;
1390: cost_sums[0] = cost_sums[1]; /* don't use cost_codesize for print-metrics */
1391: debugp(stderr, "--no-dynamic conflicts with --ss-min-codesize, reverting to --ss-min-nexts\n");
1392: }
1393: }
1394: #endif
1395:
1.106 anton 1396: #define MAX_BB 128 /* maximum number of instructions in BB */
1.125 anton 1397: #define INF_COST 1000000 /* infinite cost */
1398: #define CANONICAL_STATE 0
1399:
1400: struct waypoint {
1401: int cost; /* the cost from here to the end */
1402: PrimNum inst; /* the inst used from here to the next waypoint */
1403: char relocatable; /* the last non-transition was relocatable */
1404: char no_transition; /* don't use the next transition (relocatability)
1405: * or this transition (does not change state) */
1406: };
1407:
1.156 anton 1408: struct tpa_state { /* tree parsing automaton (like) state */
1.155 anton 1409: /* labeling is back-to-front */
1410: struct waypoint *inst; /* in front of instruction */
1411: struct waypoint *trans; /* in front of instruction and transition */
1412: };
1413:
1.156 anton 1414: struct tpa_state *termstate = NULL; /* initialized in loader() */
1.155 anton 1415:
1.158 anton 1416: /* statistics about tree parsing (lazyburg) stuff */
1417: long lb_basic_blocks = 0;
1418: long lb_labeler_steps = 0;
1419: long lb_labeler_automaton = 0;
1420: long lb_labeler_dynprog = 0;
1421: long lb_newstate_equiv = 0;
1422: long lb_newstate_new = 0;
1423: long lb_applicable_base_rules = 0;
1424: long lb_applicable_chain_rules = 0;
1425:
1.162 pazsan 1426: #if !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED))
1.161 pazsan 1427: static void init_waypoints(struct waypoint ws[])
1.125 anton 1428: {
1429: int k;
1430:
1431: for (k=0; k<maxstates; k++)
1432: ws[k].cost=INF_COST;
1433: }
1.106 anton 1434:
1.161 pazsan 1435: static struct tpa_state *empty_tpa_state()
1.155 anton 1436: {
1.156 anton 1437: struct tpa_state *s = malloc(sizeof(struct tpa_state));
1.155 anton 1438:
1.157 anton 1439: s->inst = calloc(maxstates,sizeof(struct waypoint));
1.155 anton 1440: init_waypoints(s->inst);
1.157 anton 1441: s->trans = calloc(maxstates,sizeof(struct waypoint));
1.155 anton 1442: /* init_waypoints(s->trans);*/
1443: return s;
1444: }
1445:
1.161 pazsan 1446: static void transitions(struct tpa_state *t)
1.107 anton 1447: {
1.125 anton 1448: int k;
1449: struct super_state *l;
1450:
1451: for (k=0; k<maxstates; k++) {
1.155 anton 1452: t->trans[k] = t->inst[k];
1453: t->trans[k].no_transition = 1;
1.125 anton 1454: }
1455: for (l = state_transitions; l != NULL; l = l->next) {
1456: PrimNum s = l->super;
1457: int jcost;
1458: struct cost *c=super_costs+s;
1.155 anton 1459: struct waypoint *wi=&(t->trans[c->state_in]);
1460: struct waypoint *wo=&(t->inst[c->state_out]);
1.158 anton 1461: lb_applicable_chain_rules++;
1.125 anton 1462: if (wo->cost == INF_COST)
1463: continue;
1464: jcost = wo->cost + ss_cost(s);
1465: if (jcost <= wi->cost) {
1466: wi->cost = jcost;
1467: wi->inst = s;
1468: wi->relocatable = wo->relocatable;
1469: wi->no_transition = 0;
1470: /* if (ss_greedy) wi->cost = wo->cost ? */
1471: }
1472: }
1473: }
1.107 anton 1474:
1.161 pazsan 1475: static struct tpa_state *make_termstate()
1.155 anton 1476: {
1.157 anton 1477: struct tpa_state *s = empty_tpa_state();
1.155 anton 1478:
1479: s->inst[CANONICAL_STATE].cost = 0;
1480: transitions(s);
1481: return s;
1482: }
1.162 pazsan 1483: #endif
1.155 anton 1484:
1.156 anton 1485: #define TPA_SIZE 16384
1486:
1487: struct tpa_entry {
1488: struct tpa_entry *next;
1489: PrimNum inst;
1490: struct tpa_state *state_behind; /* note: brack-to-front labeling */
1491: struct tpa_state *state_infront; /* note: brack-to-front labeling */
1492: } *tpa_table[TPA_SIZE];
1493:
1.162 pazsan 1494: #if !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED))
1.161 pazsan 1495: static Cell hash_tpa(PrimNum p, struct tpa_state *t)
1.156 anton 1496: {
1497: UCell it = (UCell )t;
1498: return (p+it+(it>>14))&(TPA_SIZE-1);
1499: }
1500:
1.161 pazsan 1501: static struct tpa_state **lookup_tpa(PrimNum p, struct tpa_state *t2)
1.156 anton 1502: {
1503: int hash=hash_tpa(p, t2);
1504: struct tpa_entry *te = tpa_table[hash];
1505:
1.158 anton 1506: if (tpa_noautomaton) {
1507: static struct tpa_state *t;
1508: t = NULL;
1509: return &t;
1510: }
1.156 anton 1511: for (; te!=NULL; te = te->next) {
1512: if (p == te->inst && t2 == te->state_behind)
1513: return &(te->state_infront);
1514: }
1515: te = (struct tpa_entry *)malloc(sizeof(struct tpa_entry));
1516: te->next = tpa_table[hash];
1517: te->inst = p;
1518: te->state_behind = t2;
1519: te->state_infront = NULL;
1520: tpa_table[hash] = te;
1521: return &(te->state_infront);
1522: }
1523:
1.161 pazsan 1524: static void tpa_state_normalize(struct tpa_state *t)
1.157 anton 1525: {
1526: /* normalize so cost of canonical state=0; this may result in
1527: negative states for some states */
1528: int d = t->inst[CANONICAL_STATE].cost;
1529: int i;
1530:
1531: for (i=0; i<maxstates; i++) {
1532: if (t->inst[i].cost != INF_COST)
1533: t->inst[i].cost -= d;
1534: if (t->trans[i].cost != INF_COST)
1535: t->trans[i].cost -= d;
1536: }
1537: }
1538:
1.161 pazsan 1539: static int tpa_state_equivalent(struct tpa_state *t1, struct tpa_state *t2)
1.157 anton 1540: {
1541: return (memcmp(t1->inst, t2->inst, maxstates*sizeof(struct waypoint)) == 0 &&
1542: memcmp(t1->trans,t2->trans,maxstates*sizeof(struct waypoint)) == 0);
1543: }
1.162 pazsan 1544: #endif
1.157 anton 1545:
1546: struct tpa_state_entry {
1547: struct tpa_state_entry *next;
1548: struct tpa_state *state;
1549: } *tpa_state_table[TPA_SIZE];
1550:
1.163 pazsan 1551: #if !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED))
1.161 pazsan 1552: static Cell hash_tpa_state(struct tpa_state *t)
1.157 anton 1553: {
1554: int *ti = (int *)(t->inst);
1555: int *tt = (int *)(t->trans);
1556: int r=0;
1557: int i;
1558:
1559: for (i=0; ti+i < (int *)(t->inst+maxstates); i++)
1560: r += ti[i]+tt[i];
1561: return (r+(r>>14)+(r>>22)) & (TPA_SIZE-1);
1562: }
1563:
1.161 pazsan 1564: static struct tpa_state *lookup_tpa_state(struct tpa_state *t)
1.157 anton 1565: {
1566: Cell hash = hash_tpa_state(t);
1567: struct tpa_state_entry *te = tpa_state_table[hash];
1568: struct tpa_state_entry *tn;
1569:
1.158 anton 1570: if (!tpa_noequiv) {
1571: for (; te!=NULL; te = te->next) {
1572: if (tpa_state_equivalent(t, te->state)) {
1573: lb_newstate_equiv++;
1574: free(t->inst);
1575: free(t->trans);
1576: free(t);
1577: return te->state;
1578: }
1.157 anton 1579: }
1.158 anton 1580: tn = (struct tpa_state_entry *)malloc(sizeof(struct tpa_state_entry));
1581: tn->next = te;
1582: tn->state = t;
1583: tpa_state_table[hash] = tn;
1584: }
1585: lb_newstate_new++;
1586: if (tpa_trace)
1587: fprintf(stderr, "%ld %ld lb_states\n", lb_labeler_steps, lb_newstate_new);
1.157 anton 1588: return t;
1589: }
1590:
1.125 anton 1591: /* use dynamic programming to find the shortest paths within the basic
1592: block origs[0..ninsts-1] and rewrite the instructions pointed to by
1593: instps to use it */
1.161 pazsan 1594: static void optimize_rewrite(Cell *instps[], PrimNum origs[], int ninsts)
1.125 anton 1595: {
1596: int i,j;
1.156 anton 1597: struct tpa_state *ts[ninsts+1];
1.125 anton 1598: int nextdyn, nextstate, no_transition;
1599:
1.158 anton 1600: lb_basic_blocks++;
1.155 anton 1601: ts[ninsts] = termstate;
1.107 anton 1602: for (i=ninsts-1; i>=0; i--) {
1.156 anton 1603: struct tpa_state **tp = lookup_tpa(origs[i],ts[i+1]);
1604: struct tpa_state *t = *tp;
1.158 anton 1605: lb_labeler_steps++;
1606: if (t) {
1.156 anton 1607: ts[i] = t;
1.158 anton 1608: lb_labeler_automaton++;
1609: }
1.156 anton 1610: else {
1.158 anton 1611: lb_labeler_dynprog++;
1.156 anton 1612: ts[i] = empty_tpa_state();
1613: for (j=1; j<=max_super && i+j<=ninsts; j++) {
1614: struct super_state **superp = lookup_super(origs+i, j);
1615: if (superp!=NULL) {
1616: struct super_state *supers = *superp;
1617: for (; supers!=NULL; supers = supers->next) {
1618: PrimNum s = supers->super;
1619: int jcost;
1620: struct cost *c=super_costs+s;
1621: struct waypoint *wi=&(ts[i]->inst[c->state_in]);
1622: struct waypoint *wo=&(ts[i+j]->trans[c->state_out]);
1623: int no_transition = wo->no_transition;
1.158 anton 1624: lb_applicable_base_rules++;
1.156 anton 1625: if (!(is_relocatable(s)) && !wo->relocatable) {
1626: wo=&(ts[i+j]->inst[c->state_out]);
1627: no_transition=1;
1628: }
1629: if (wo->cost == INF_COST)
1630: continue;
1631: jcost = wo->cost + ss_cost(s);
1632: if (jcost <= wi->cost) {
1633: wi->cost = jcost;
1634: wi->inst = s;
1635: wi->relocatable = is_relocatable(s);
1636: wi->no_transition = no_transition;
1637: /* if (ss_greedy) wi->cost = wo->cost ? */
1638: }
1.125 anton 1639: }
1.107 anton 1640: }
1641: }
1.156 anton 1642: transitions(ts[i]);
1.157 anton 1643: tpa_state_normalize(ts[i]);
1644: *tp = ts[i] = lookup_tpa_state(ts[i]);
1.158 anton 1645: if (tpa_trace)
1646: fprintf(stderr, "%ld %ld lb_table_entries\n", lb_labeler_steps, lb_labeler_dynprog);
1.107 anton 1647: }
1.125 anton 1648: }
1649: /* now rewrite the instructions */
1650: nextdyn=0;
1651: nextstate=CANONICAL_STATE;
1.155 anton 1652: no_transition = ((!ts[0]->trans[nextstate].relocatable)
1653: ||ts[0]->trans[nextstate].no_transition);
1.125 anton 1654: for (i=0; i<ninsts; i++) {
1655: Cell tc=0, tc2;
1656: if (i==nextdyn) {
1657: if (!no_transition) {
1658: /* process trans */
1.155 anton 1659: PrimNum p = ts[i]->trans[nextstate].inst;
1.125 anton 1660: struct cost *c = super_costs+p;
1.155 anton 1661: assert(ts[i]->trans[nextstate].cost != INF_COST);
1.125 anton 1662: assert(c->state_in==nextstate);
1.128 anton 1663: tc = compile_prim_dyn(p,NULL);
1.125 anton 1664: nextstate = c->state_out;
1665: }
1666: {
1667: /* process inst */
1.155 anton 1668: PrimNum p = ts[i]->inst[nextstate].inst;
1.125 anton 1669: struct cost *c=super_costs+p;
1670: assert(c->state_in==nextstate);
1.155 anton 1671: assert(ts[i]->inst[nextstate].cost != INF_COST);
1.125 anton 1672: #if defined(GFORTH_DEBUGGING)
1673: assert(p == origs[i]);
1674: #endif
1.128 anton 1675: tc2 = compile_prim_dyn(p,instps[i]);
1.125 anton 1676: if (no_transition || !is_relocatable(p))
1677: /* !! actually what we care about is if and where
1678: * compile_prim_dyn() puts NEXTs */
1679: tc=tc2;
1.155 anton 1680: no_transition = ts[i]->inst[nextstate].no_transition;
1.125 anton 1681: nextstate = c->state_out;
1682: nextdyn += c->length;
1683: }
1684: } else {
1685: #if defined(GFORTH_DEBUGGING)
1686: assert(0);
1687: #endif
1688: tc=0;
1.155 anton 1689: /* tc= (Cell)vm_prims[ts[i]->inst[CANONICAL_STATE].inst]; */
1.125 anton 1690: }
1691: *(instps[i]) = tc;
1692: }
1693: if (!no_transition) {
1.155 anton 1694: PrimNum p = ts[i]->trans[nextstate].inst;
1.125 anton 1695: struct cost *c = super_costs+p;
1696: assert(c->state_in==nextstate);
1.155 anton 1697: assert(ts[i]->trans[nextstate].cost != INF_COST);
1.125 anton 1698: assert(i==nextdyn);
1.128 anton 1699: (void)compile_prim_dyn(p,NULL);
1.125 anton 1700: nextstate = c->state_out;
1.107 anton 1701: }
1.125 anton 1702: assert(nextstate==CANONICAL_STATE);
1.107 anton 1703: }
1.162 pazsan 1704: #endif
1.107 anton 1705:
1.105 anton 1706: /* compile *start, possibly rewriting it into a static and/or dynamic
1707: superinstruction */
1708: void compile_prim1(Cell *start)
1.70 anton 1709: {
1.108 anton 1710: #if defined(DOUBLY_INDIRECT)
1.125 anton 1711: Label prim;
1712:
1713: if (start==NULL)
1714: return;
1715: prim = (Label)*start;
1.108 anton 1716: if (prim<((Label)(xts+DOESJUMP)) || prim>((Label)(xts+npriminfos))) {
1717: fprintf(stderr,"compile_prim encountered xt %p\n", prim);
1718: *start=(Cell)prim;
1719: return;
1720: } else {
1721: *start = (Cell)(prim-((Label)xts)+((Label)vm_prims));
1722: return;
1723: }
1724: #elif defined(INDIRECT_THREADED)
1725: return;
1.112 anton 1726: #else /* !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED)) */
1.128 anton 1727: /* !! does not work, for unknown reasons; but something like this is
1728: probably needed to ensure that we don't call compile_prim_dyn
1729: before the inline arguments are there */
1730: static Cell *instps[MAX_BB];
1731: static PrimNum origs[MAX_BB];
1732: static int ninsts=0;
1733: PrimNum prim_num;
1734:
1735: if (start==NULL || ninsts >= MAX_BB ||
1736: (ninsts>0 && superend[origs[ninsts-1]])) {
1737: /* after bb, or at the start of the next bb */
1738: optimize_rewrite(instps,origs,ninsts);
1739: /* fprintf(stderr,"optimize_rewrite(...,%d)\n",ninsts); */
1740: ninsts=0;
1741: if (start==NULL)
1742: return;
1743: }
1744: prim_num = ((Xt)*start)-vm_prims;
1745: if(prim_num >= npriminfos) {
1746: optimize_rewrite(instps,origs,ninsts);
1.129 anton 1747: /* fprintf(stderr,"optimize_rewrite(...,%d)\n",ninsts);*/
1.128 anton 1748: ninsts=0;
1749: return;
1750: }
1751: assert(ninsts<MAX_BB);
1752: instps[ninsts] = start;
1753: origs[ninsts] = prim_num;
1754: ninsts++;
1.112 anton 1755: #endif /* !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED)) */
1.47 anton 1756: }
1757:
1.176 ! pazsan 1758: #ifndef STANDALONE
1.161 pazsan 1759: Address gforth_loader(FILE *imagefile, char* filename)
1.1 anton 1760: /* returns the address of the image proper (after the preamble) */
1761: {
1762: ImageHeader header;
1763: Address image;
1764: Address imp; /* image+preamble */
1.17 anton 1765: Char magic[8];
1766: char magic7; /* size byte of magic number */
1.1 anton 1767: Cell preamblesize=0;
1.6 pazsan 1768: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 1769: UCell check_sum;
1.15 pazsan 1770: Cell ausize = ((RELINFOBITS == 8) ? 0 :
1771: (RELINFOBITS == 16) ? 1 :
1772: (RELINFOBITS == 32) ? 2 : 3);
1773: Cell charsize = ((sizeof(Char) == 1) ? 0 :
1774: (sizeof(Char) == 2) ? 1 :
1775: (sizeof(Char) == 4) ? 2 : 3) + ausize;
1776: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
1777: (sizeof(Cell) == 2) ? 1 :
1778: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 anton 1779: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
1780: #ifdef WORDS_BIGENDIAN
1781: 0
1782: #else
1783: 1
1784: #endif
1785: ;
1.1 anton 1786:
1.164 pazsan 1787: vm_prims = gforth_engine(0,0,0,0,0);
1.47 anton 1788: check_prims(vm_prims);
1.106 anton 1789: prepare_super_table();
1.1 anton 1790: #ifndef DOUBLY_INDIRECT
1.59 anton 1791: #ifdef PRINT_SUPER_LENGTHS
1792: print_super_lengths();
1793: #endif
1.43 anton 1794: check_sum = checksum(vm_prims);
1.1 anton 1795: #else /* defined(DOUBLY_INDIRECT) */
1.43 anton 1796: check_sum = (UCell)vm_prims;
1.1 anton 1797: #endif /* defined(DOUBLY_INDIRECT) */
1.155 anton 1798: #if !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED))
1799: termstate = make_termstate();
1800: #endif /* !(defined(DOUBLY_INDIRECT) || defined(INDIRECT_THREADED)) */
1.10 pazsan 1801:
1802: do {
1803: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.84 anton 1804: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.6) image.\n",
1.10 pazsan 1805: progname, filename);
1806: exit(1);
1.1 anton 1807: }
1.10 pazsan 1808: preamblesize+=8;
1.84 anton 1809: } while(memcmp(magic,"Gforth3",7));
1.17 anton 1810: magic7 = magic[7];
1.1 anton 1811: if (debug) {
1.17 anton 1812: magic[7]='\0';
1.21 anton 1813: fprintf(stderr,"Magic found: %s ", magic);
1814: print_sizes(magic7);
1.1 anton 1815: }
1816:
1.21 anton 1817: if (magic7 != sizebyte)
1818: {
1819: fprintf(stderr,"This image is: ");
1820: print_sizes(magic7);
1821: fprintf(stderr,"whereas the machine is ");
1822: print_sizes(sizebyte);
1.1 anton 1823: exit(-2);
1824: };
1825:
1826: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 1827:
1828: set_stack_sizes(&header);
1.1 anton 1829:
1830: #if HAVE_GETPAGESIZE
1831: pagesize=getpagesize(); /* Linux/GNU libc offers this */
1832: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
1833: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
1834: #elif PAGESIZE
1835: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
1836: #endif
1.144 pazsan 1837: debugp(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 1838:
1.34 anton 1839: image = dict_alloc_read(imagefile, preamblesize+header.image_size,
1840: preamblesize+dictsize, data_offset);
1.33 anton 1841: imp=image+preamblesize;
1.57 anton 1842: alloc_stacks((ImageHeader *)imp);
1.1 anton 1843: if (clear_dictionary)
1.33 anton 1844: memset(imp+header.image_size, 0, dictsize-header.image_size);
1.90 anton 1845: if(header.base==0 || header.base == (Address)0x100) {
1.1 anton 1846: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
1.162 pazsan 1847: Char reloc_bits[reloc_size];
1.33 anton 1848: fseek(imagefile, preamblesize+header.image_size, SEEK_SET);
1.10 pazsan 1849: fread(reloc_bits, 1, reloc_size, imagefile);
1.161 pazsan 1850: gforth_relocate((Cell *)imp, reloc_bits, header.image_size, (Cell)header.base, vm_prims);
1.1 anton 1851: #if 0
1852: { /* let's see what the relocator did */
1853: FILE *snapshot=fopen("snapshot.fi","wb");
1854: fwrite(image,1,imagesize,snapshot);
1855: fclose(snapshot);
1856: }
1857: #endif
1.46 jwilke 1858: }
1859: else if(header.base!=imp) {
1860: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
1861: progname, (unsigned long)header.base, (unsigned long)imp);
1862: exit(1);
1.1 anton 1863: }
1864: if (header.checksum==0)
1865: ((ImageHeader *)imp)->checksum=check_sum;
1866: else if (header.checksum != check_sum) {
1867: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
1868: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
1869: exit(1);
1870: }
1.53 anton 1871: #ifdef DOUBLY_INDIRECT
1872: ((ImageHeader *)imp)->xt_base = xts;
1873: #endif
1.1 anton 1874: fclose(imagefile);
1875:
1.56 anton 1876: /* unnecessary, except maybe for CODE words */
1877: /* FLUSH_ICACHE(imp, header.image_size);*/
1.1 anton 1878:
1879: return imp;
1880: }
1.176 ! pazsan 1881: #endif
1.1 anton 1882:
1.72 anton 1883: /* pointer to last '/' or '\' in file, 0 if there is none. */
1.161 pazsan 1884: static char *onlypath(char *filename)
1.10 pazsan 1885: {
1.72 anton 1886: return strrchr(filename, DIRSEP);
1.1 anton 1887: }
1888:
1.161 pazsan 1889: static FILE *openimage(char *fullfilename)
1.10 pazsan 1890: {
1891: FILE *image_file;
1.162 pazsan 1892: char * expfilename = tilde_cstr((Char *)fullfilename, strlen(fullfilename), 1);
1.10 pazsan 1893:
1.28 anton 1894: image_file=fopen(expfilename,"rb");
1.1 anton 1895: if (image_file!=NULL && debug)
1.28 anton 1896: fprintf(stderr, "Opened image file: %s\n", expfilename);
1.10 pazsan 1897: return image_file;
1.1 anton 1898: }
1899:
1.28 anton 1900: /* try to open image file concat(path[0:len],imagename) */
1.161 pazsan 1901: static FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 1902: {
1903: int dirlen=len;
1.162 pazsan 1904: char fullfilename[dirlen+strlen((char *)imagename)+2];
1.10 pazsan 1905:
1.1 anton 1906: memcpy(fullfilename, path, dirlen);
1.71 pazsan 1907: if (fullfilename[dirlen-1]!=DIRSEP)
1908: fullfilename[dirlen++]=DIRSEP;
1.1 anton 1909: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 1910: return openimage(fullfilename);
1.1 anton 1911: }
1912:
1.161 pazsan 1913: static FILE * open_image_file(char * imagename, char * path)
1.1 anton 1914: {
1.10 pazsan 1915: FILE * image_file=NULL;
1.28 anton 1916: char *origpath=path;
1.10 pazsan 1917:
1.71 pazsan 1918: if(strchr(imagename, DIRSEP)==NULL) {
1.10 pazsan 1919: /* first check the directory where the exe file is in !! 01may97jaw */
1920: if (onlypath(progname))
1.72 anton 1921: image_file=checkimage(progname, onlypath(progname)-progname, imagename);
1.10 pazsan 1922: if (!image_file)
1923: do {
1924: char *pend=strchr(path, PATHSEP);
1925: if (pend==NULL)
1926: pend=path+strlen(path);
1927: if (strlen(path)==0) break;
1928: image_file=checkimage(path, pend-path, imagename);
1929: path=pend+(*pend==PATHSEP);
1930: } while (image_file==NULL);
1931: } else {
1932: image_file=openimage(imagename);
1933: }
1.1 anton 1934:
1.10 pazsan 1935: if (!image_file) {
1936: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
1.28 anton 1937: progname, imagename, origpath);
1.10 pazsan 1938: exit(1);
1.7 anton 1939: }
1940:
1.10 pazsan 1941: return image_file;
1942: }
1.11 pazsan 1943: #endif
1944:
1945: #ifdef HAS_OS
1.161 pazsan 1946: static UCell convsize(char *s, UCell elemsize)
1.11 pazsan 1947: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
1948: of bytes. the letter at the end indicates the unit, where e stands
1949: for the element size. default is e */
1950: {
1951: char *endp;
1952: UCell n,m;
1953:
1954: m = elemsize;
1955: n = strtoul(s,&endp,0);
1956: if (endp!=NULL) {
1957: if (strcmp(endp,"b")==0)
1958: m=1;
1959: else if (strcmp(endp,"k")==0)
1960: m=1024;
1961: else if (strcmp(endp,"M")==0)
1962: m=1024*1024;
1963: else if (strcmp(endp,"G")==0)
1964: m=1024*1024*1024;
1965: else if (strcmp(endp,"T")==0) {
1966: #if (SIZEOF_CHAR_P > 4)
1.24 anton 1967: m=1024L*1024*1024*1024;
1.11 pazsan 1968: #else
1969: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
1970: exit(1);
1971: #endif
1972: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
1973: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
1974: exit(1);
1975: }
1976: }
1977: return n*m;
1978: }
1.10 pazsan 1979:
1.109 anton 1980: enum {
1981: ss_number = 256,
1.125 anton 1982: ss_states,
1.109 anton 1983: ss_min_codesize,
1984: ss_min_ls,
1985: ss_min_lsu,
1986: ss_min_nexts,
1987: };
1988:
1.10 pazsan 1989: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
1990: {
1991: int c;
1992:
1.1 anton 1993: opterr=0;
1994: while (1) {
1995: int option_index=0;
1996: static struct option opts[] = {
1.29 anton 1997: {"appl-image", required_argument, NULL, 'a'},
1.1 anton 1998: {"image-file", required_argument, NULL, 'i'},
1999: {"dictionary-size", required_argument, NULL, 'm'},
2000: {"data-stack-size", required_argument, NULL, 'd'},
2001: {"return-stack-size", required_argument, NULL, 'r'},
2002: {"fp-stack-size", required_argument, NULL, 'f'},
2003: {"locals-stack-size", required_argument, NULL, 'l'},
2004: {"path", required_argument, NULL, 'p'},
2005: {"version", no_argument, NULL, 'v'},
2006: {"help", no_argument, NULL, 'h'},
2007: /* put something != 0 into offset_image */
2008: {"offset-image", no_argument, &offset_image, 1},
2009: {"no-offset-im", no_argument, &offset_image, 0},
2010: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 2011: {"die-on-signal", no_argument, &die_on_signal, 1},
1.169 anton 2012: {"ignore-async-signals", no_argument, &ignore_async_signals, 1},
1.1 anton 2013: {"debug", no_argument, &debug, 1},
1.144 pazsan 2014: {"diag", no_argument, &diag, 1},
1.60 anton 2015: {"no-super", no_argument, &no_super, 1},
2016: {"no-dynamic", no_argument, &no_dynamic, 1},
1.66 anton 2017: {"dynamic", no_argument, &no_dynamic, 0},
1.110 anton 2018: {"print-metrics", no_argument, &print_metrics, 1},
1.109 anton 2019: {"ss-number", required_argument, NULL, ss_number},
1.125 anton 2020: {"ss-states", required_argument, NULL, ss_states},
1.109 anton 2021: #ifndef NO_DYNAMIC
2022: {"ss-min-codesize", no_argument, NULL, ss_min_codesize},
2023: #endif
2024: {"ss-min-ls", no_argument, NULL, ss_min_ls},
2025: {"ss-min-lsu", no_argument, NULL, ss_min_lsu},
2026: {"ss-min-nexts", no_argument, NULL, ss_min_nexts},
1.110 anton 2027: {"ss-greedy", no_argument, &ss_greedy, 1},
1.158 anton 2028: {"tpa-noequiv", no_argument, &tpa_noequiv, 1},
2029: {"tpa-noautomaton", no_argument, &tpa_noautomaton, 1},
2030: {"tpa-trace", no_argument, &tpa_trace, 1},
1.1 anton 2031: {0,0,0,0}
2032: /* no-init-file, no-rc? */
2033: };
2034:
1.36 pazsan 2035: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vhoncsx", opts, &option_index);
1.1 anton 2036:
2037: switch (c) {
1.29 anton 2038: case EOF: return;
2039: case '?': optind--; return;
2040: case 'a': *imagename = optarg; return;
1.10 pazsan 2041: case 'i': *imagename = optarg; break;
1.1 anton 2042: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
2043: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
2044: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
2045: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
2046: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 2047: case 'p': *path = optarg; break;
1.36 pazsan 2048: case 'o': offset_image = 1; break;
2049: case 'n': offset_image = 0; break;
2050: case 'c': clear_dictionary = 1; break;
2051: case 's': die_on_signal = 1; break;
2052: case 'x': debug = 1; break;
1.83 anton 2053: case 'v': fputs(PACKAGE_STRING"\n", stderr); exit(0);
1.109 anton 2054: case ss_number: static_super_number = atoi(optarg); break;
1.125 anton 2055: case ss_states: maxstates = max(min(atoi(optarg),MAX_STATE),1); break;
1.109 anton 2056: #ifndef NO_DYNAMIC
2057: case ss_min_codesize: ss_cost = cost_codesize; break;
2058: #endif
2059: case ss_min_ls: ss_cost = cost_ls; break;
2060: case ss_min_lsu: ss_cost = cost_lsu; break;
2061: case ss_min_nexts: ss_cost = cost_nexts; break;
1.1 anton 2062: case 'h':
1.29 anton 2063: fprintf(stderr, "Usage: %s [engine options] ['--'] [image arguments]\n\
1.1 anton 2064: Engine Options:\n\
1.29 anton 2065: --appl-image FILE equivalent to '--image-file=FILE --'\n\
1.10 pazsan 2066: --clear-dictionary Initialize the dictionary with 0 bytes\n\
2067: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
2068: --debug Print debugging information during startup\n\
1.144 pazsan 2069: --diag Print diagnostic information during startup\n\
1.169 anton 2070: --die-on-signal exit instead of THROWing some signals\n\
1.66 anton 2071: --dynamic use dynamic native code\n\
1.10 pazsan 2072: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
2073: -h, --help Print this message and exit\n\
1.169 anton 2074: --ignore-async-signals ignore instead of THROWing async. signals\n\
1.10 pazsan 2075: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
2076: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
2077: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
1.60 anton 2078: --no-dynamic Use only statically compiled primitives\n\
1.10 pazsan 2079: --no-offset-im Load image at normal position\n\
1.60 anton 2080: --no-super No dynamically formed superinstructions\n\
1.10 pazsan 2081: --offset-image Load image at a different position\n\
2082: -p PATH, --path=PATH Search path for finding image and sources\n\
1.110 anton 2083: --print-metrics Print some code generation metrics on exit\n\
1.10 pazsan 2084: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
1.111 anton 2085: --ss-greedy greedy, not optimal superinst selection\n\
2086: --ss-min-codesize select superinsts for smallest native code\n\
2087: --ss-min-ls minimize loads and stores\n\
2088: --ss-min-lsu minimize loads, stores, and pointer updates\n\
2089: --ss-min-nexts minimize the number of static superinsts\n\
2090: --ss-number=N use N static superinsts (default max)\n\
1.125 anton 2091: --ss-states=N N states for stack caching (default max)\n\
1.158 anton 2092: --tpa-noequiv automaton without state equivalence\n\
2093: --tpa-noautomaton dynamic programming only\n\
2094: --tpa-trace report new states etc.\n\
1.66 anton 2095: -v, --version Print engine version and exit\n\
1.1 anton 2096: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 2097: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
2098: argv[0]);
2099: optind--;
2100: return;
1.1 anton 2101: }
2102: }
1.10 pazsan 2103: }
1.11 pazsan 2104: #endif
1.10 pazsan 2105:
1.161 pazsan 2106: static void print_diag()
1.144 pazsan 2107: {
2108:
1.153 pazsan 2109: #if !defined(HAVE_GETRUSAGE) || (!defined(HAS_FFCALL) && !defined(HAS_LIBFFI))
1.145 pazsan 2110: fprintf(stderr, "*** missing functionality ***\n"
1.144 pazsan 2111: #ifndef HAVE_GETRUSAGE
2112: " no getrusage -> CPUTIME broken\n"
2113: #endif
1.153 pazsan 2114: #if !defined(HAS_FFCALL) && !defined(HAS_LIBFFI)
1.144 pazsan 2115: " no ffcall -> only old-style foreign function calls (no fflib.fs)\n"
2116: #endif
2117: );
2118: #endif
2119: if((relocs < nonrelocs) ||
2120: #if defined(BUGGY_LL_CMP) || defined(BUGGY_LL_MUL) || defined(BUGGY_LL_DIV) || defined(BUGGY_LL_ADD) || defined(BUGGY_LL_SHIFT) || defined(BUGGY_LL_D2F) || defined(BUGGY_LL_F2D)
2121: 1
2122: #else
2123: 0
2124: #endif
2125: )
2126: debugp(stderr, "relocs: %d:%d\n", relocs, nonrelocs);
1.165 pazsan 2127: fprintf(stderr, "*** %sperformance problems ***\n%s",
2128: #if defined(BUGGY_LL_CMP) || defined(BUGGY_LL_MUL) || defined(BUGGY_LL_DIV) || defined(BUGGY_LL_ADD) || defined(BUGGY_LL_SHIFT) || defined(BUGGY_LL_D2F) || defined(BUGGY_LL_F2D) || !defined(FORCE_REG) || defined(BUGGY_LONG_LONG)
2129: "",
2130: #else
2131: "no ",
2132: #endif
1.144 pazsan 2133: #if defined(BUGGY_LL_CMP) || defined(BUGGY_LL_MUL) || defined(BUGGY_LL_DIV) || defined(BUGGY_LL_ADD) || defined(BUGGY_LL_SHIFT) || defined(BUGGY_LL_D2F) || defined(BUGGY_LL_F2D)
2134: " double-cell integer type buggy ->\n "
2135: #ifdef BUGGY_LL_CMP
2136: "CMP, "
2137: #endif
2138: #ifdef BUGGY_LL_MUL
2139: "MUL, "
2140: #endif
2141: #ifdef BUGGY_LL_DIV
2142: "DIV, "
2143: #endif
2144: #ifdef BUGGY_LL_ADD
2145: "ADD, "
2146: #endif
2147: #ifdef BUGGY_LL_SHIFT
2148: "SHIFT, "
2149: #endif
2150: #ifdef BUGGY_LL_D2F
2151: "D2F, "
2152: #endif
2153: #ifdef BUGGY_LL_F2D
2154: "F2D, "
2155: #endif
2156: "\b\b slow\n"
1.145 pazsan 2157: #endif
2158: #ifndef FORCE_REG
2159: " automatic register allocation: performance degradation possible\n"
2160: #endif
2161: #if !defined(FORCE_REG) || defined(BUGGY_LONG_LONG)
2162: "*** Suggested remedy: try ./configure"
2163: #ifndef FORCE_REG
2164: " --enable-force-reg"
2165: #endif
2166: #ifdef BUGGY_LONG_LONG
2167: " --enable-force-ll"
2168: #endif
2169: "\n"
1.166 pazsan 2170: #else
2171: ""
1.144 pazsan 2172: #endif
2173: ,
2174: (relocs < nonrelocs) ? " gcc PR 15242 -> no dynamic code generation (use gcc-2.95 instead)\n" : "");
2175: }
2176:
1.10 pazsan 2177: #ifdef INCLUDE_IMAGE
2178: extern Cell image[];
2179: extern const char reloc_bits[];
2180: #endif
1.67 pazsan 2181:
1.10 pazsan 2182: int main(int argc, char **argv, char **env)
2183: {
1.30 pazsan 2184: #ifdef HAS_OS
1.10 pazsan 2185: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.30 pazsan 2186: #else
2187: char *path = DEFAULTPATH;
2188: #endif
1.13 pazsan 2189: #ifndef INCLUDE_IMAGE
1.10 pazsan 2190: char *imagename="gforth.fi";
2191: FILE *image_file;
2192: Address image;
2193: #endif
2194: int retvalue;
2195:
1.56 anton 2196: #if defined(i386) && defined(ALIGNMENT_CHECK)
1.10 pazsan 2197: /* turn on alignment checks on the 486.
2198: * on the 386 this should have no effect. */
2199: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
2200: /* this is unusable with Linux' libc.4.6.27, because this library is
2201: not alignment-clean; we would have to replace some library
2202: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
2203: the stack FP-aligned. */
2204: #endif
2205:
2206: /* buffering of the user output device */
1.11 pazsan 2207: #ifdef _IONBF
1.10 pazsan 2208: if (isatty(fileno(stdout))) {
2209: fflush(stdout);
2210: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 2211: }
1.11 pazsan 2212: #endif
1.1 anton 2213:
1.10 pazsan 2214: progname = argv[0];
2215:
1.11 pazsan 2216: #ifdef HAS_OS
1.10 pazsan 2217: gforth_args(argc, argv, &path, &imagename);
1.109 anton 2218: #ifndef NO_DYNAMIC
1.148 anton 2219: init_ss_cost();
1.109 anton 2220: #endif /* !defined(NO_DYNAMIC) */
2221: #endif /* defined(HAS_OS) */
1.10 pazsan 2222:
1.175 pazsan 2223: #ifdef STANDALONE
2224: image = gforth_engine(0, 0, 0, 0, 0);
1.10 pazsan 2225: alloc_stacks((ImageHeader *)image);
2226: #else
2227: image_file = open_image_file(imagename, path);
1.161 pazsan 2228: image = gforth_loader(image_file, imagename);
1.10 pazsan 2229: #endif
1.24 anton 2230: gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */
1.1 anton 2231:
1.144 pazsan 2232: if (diag)
2233: print_diag();
1.1 anton 2234: {
1.10 pazsan 2235: char path2[strlen(path)+1];
1.1 anton 2236: char *p1, *p2;
2237: Cell environ[]= {
2238: (Cell)argc-(optind-1),
2239: (Cell)(argv+(optind-1)),
1.10 pazsan 2240: (Cell)strlen(path),
1.1 anton 2241: (Cell)path2};
2242: argv[optind-1] = progname;
2243: /*
2244: for (i=0; i<environ[0]; i++)
2245: printf("%s\n", ((char **)(environ[1]))[i]);
2246: */
2247: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 2248: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 2249: if (*p1==PATHSEP)
2250: *p2 = '\0';
2251: else
2252: *p2 = *p1;
2253: *p2='\0';
1.161 pazsan 2254: retvalue = gforth_go(image, 4, environ);
1.102 anton 2255: #ifdef SIGPIPE
2256: bsd_signal(SIGPIPE, SIG_IGN);
2257: #endif
1.42 anton 2258: #ifdef VM_PROFILING
2259: vm_print_profile(stderr);
2260: #endif
1.1 anton 2261: deprep_terminal();
1.104 anton 2262: }
1.110 anton 2263: if (print_metrics) {
2264: int i;
2265: fprintf(stderr, "code size = %8ld\n", dyncodesize());
2266: for (i=0; i<sizeof(cost_sums)/sizeof(cost_sums[0]); i++)
2267: fprintf(stderr, "metric %8s: %8ld\n",
2268: cost_sums[i].metricname, cost_sums[i].sum);
1.158 anton 2269: fprintf(stderr,"lb_basic_blocks = %ld\n", lb_basic_blocks);
2270: fprintf(stderr,"lb_labeler_steps = %ld\n", lb_labeler_steps);
2271: fprintf(stderr,"lb_labeler_automaton = %ld\n", lb_labeler_automaton);
2272: fprintf(stderr,"lb_labeler_dynprog = %ld\n", lb_labeler_dynprog);
2273: fprintf(stderr,"lb_newstate_equiv = %ld\n", lb_newstate_equiv);
2274: fprintf(stderr,"lb_newstate_new = %ld\n", lb_newstate_new);
2275: fprintf(stderr,"lb_applicable_base_rules = %ld\n", lb_applicable_base_rules);
2276: fprintf(stderr,"lb_applicable_chain_rules = %ld\n", lb_applicable_chain_rules);
2277: }
2278: if (tpa_trace) {
2279: fprintf(stderr, "%ld %ld lb_states\n", lb_labeler_steps, lb_newstate_new);
2280: fprintf(stderr, "%ld %ld lb_table_entries\n", lb_labeler_steps, lb_labeler_dynprog);
1.1 anton 2281: }
1.13 pazsan 2282: return retvalue;
1.1 anton 2283: }
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