Annotation of gforth/prim, revision 1.202

1.1       anton       1: \ Gforth primitives
                      2: 
1.184     anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 Free Software Foundation, Inc.
1.1       anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
                      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
1.63      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
                     21: 
                     22: \ WARNING: This file is processed by m4. Make sure your identifiers
                     23: \ don't collide with m4's (e.g. by undefining them).
                     24: \ 
                     25: \ 
                     26: \ 
                     27: \ This file contains primitive specifications in the following format:
                     28: \ 
1.47      anton      29: \ forth name   ( stack effect )        category        [pronunciation]
1.1       anton      30: \ [""glossary entry""]
                     31: \ C code
                     32: \ [:
                     33: \ Forth code]
                     34: \ 
1.47      anton      35: \ Note: Fields in brackets are optional.  Word specifications have to
                     36: \ be separated by at least one empty line
1.1       anton      37: \
                     38: \ Both pronounciation and stack items (in the stack effect) must
1.48      anton      39: \ conform to the C identifier syntax or the C compiler will complain.
                     40: \ If you don't have a pronounciation field, the Forth name is used,
                     41: \ and has to conform to the C identifier syntax.
1.1       anton      42: \ 
                     43: \ These specifications are automatically translated into C-code for the
                     44: \ interpreter and into some other files. I hope that your C compiler has
                     45: \ decent optimization, otherwise the automatically generated code will
                     46: \ be somewhat slow. The Forth version of the code is included for manual
                     47: \ compilers, so they will need to compile only the important words.
                     48: \ 
                     49: \ Note that stack pointer adjustment is performed according to stack
                     50: \ effect by automatically generated code and NEXT is automatically
                     51: \ appended to the C code. Also, you can use the names in the stack
                     52: \ effect in the C code. Stack access is automatic. One exception: if
                     53: \ your code does not fall through, the results are not stored into the
                     54: \ stack. Use different names on both sides of the '--', if you change a
                     55: \ value (some stores to the stack are optimized away).
1.93      anton      56: \
                     57: \ For superinstructions the syntax is:
                     58: \
                     59: \ forth-name [/ c-name] = forth-name forth-name ...
                     60: \
1.1       anton      61: \ 
                     62: \ The stack variables have the following types:
                     63: \ 
                     64: \ name matches type
                     65: \ f.*          Bool
                     66: \ c.*          Char
1.93      anton      67: \ [nw].*       Cell
1.1       anton      68: \ u.*          UCell
                     69: \ d.*          DCell
                     70: \ ud.*         UDCell
                     71: \ r.*          Float
                     72: \ a_.*         Cell *
                     73: \ c_.*         Char *
                     74: \ f_.*         Float *
                     75: \ df_.*                DFloat *
                     76: \ sf_.*                SFloat *
                     77: \ xt.*         XT
                     78: \ f83name.*    F83Name *
1.67      anton      79: 
1.79      anton      80: \E stack data-stack   sp Cell
                     81: \E stack fp-stack     fp Float
                     82: \E stack return-stack rp Cell
                     83: \E
1.67      anton      84: \E get-current prefixes set-current
                     85: \E 
                     86: \E s" Bool"            single data-stack type-prefix f
                     87: \E s" Char"            single data-stack type-prefix c
                     88: \E s" Cell"            single data-stack type-prefix n
                     89: \E s" Cell"            single data-stack type-prefix w
                     90: \E s" UCell"           single data-stack type-prefix u
                     91: \E s" DCell"           double data-stack type-prefix d
                     92: \E s" UDCell"          double data-stack type-prefix ud
                     93: \E s" Float"           single fp-stack   type-prefix r
                     94: \E s" Cell *"          single data-stack type-prefix a_
                     95: \E s" Char *"          single data-stack type-prefix c_
                     96: \E s" Float *"         single data-stack type-prefix f_
                     97: \E s" DFloat *"                single data-stack type-prefix df_
                     98: \E s" SFloat *"                single data-stack type-prefix sf_
                     99: \E s" Xt"              single data-stack type-prefix xt
                    100: \E s" struct F83Name *"        single data-stack type-prefix f83name
1.71      anton     101: \E s" struct Longname *" single data-stack type-prefix longname
1.67      anton     102: \E 
1.172     anton     103: \E data-stack   stack-prefix S:
                    104: \E fp-stack     stack-prefix F:
1.67      anton     105: \E return-stack stack-prefix R:
                    106: \E inst-stream  stack-prefix #
                    107: \E 
                    108: \E set-current
1.97      anton     109: \E store-optimization on
1.109     anton     110: \E ' noop tail-nextp2 ! \ now INST_TAIL just stores, but does not jump
1.128     anton     111: \E
                    112: \E include-skipped-insts on \ static superinsts include cells for components
                    113: \E                          \ useful for dynamic programming and
                    114: \E                          \ superinsts across entry points
1.67      anton     115: 
1.1       anton     116: \ 
                    117: \ 
                    118: \ 
                    119: \ In addition the following names can be used:
                    120: \ ip   the instruction pointer
                    121: \ sp   the data stack pointer
                    122: \ rp   the parameter stack pointer
                    123: \ lp   the locals stack pointer
                    124: \ NEXT executes NEXT
                    125: \ cfa  
                    126: \ NEXT1        executes NEXT1
                    127: \ FLAG(x)      makes a Forth flag from a C flag
                    128: \ 
                    129: \ 
                    130: \ 
                    131: \ Percentages in comments are from Koopmans book: average/maximum use
                    132: \ (taken from four, not very representative benchmarks)
                    133: \ 
                    134: \ 
                    135: \ 
                    136: \ To do:
                    137: \ 
                    138: \ throw execute, cfa and NEXT1 out?
                    139: \ macroize *ip, ip++, *ip++ (pipelining)?
                    140: 
1.145     anton     141: \ Stack caching setup
                    142: 
1.173     anton     143: ifdef(`STACK_CACHE_FILE', `include(STACK_CACHE_FILE)', `include(cache0.vmg)')
1.145     anton     144: 
1.1       anton     145: \ these m4 macros would collide with identifiers
                    146: undefine(`index')
                    147: undefine(`shift')
1.78      pazsan    148: undefine(`symbols')
1.1       anton     149: 
1.140     anton     150: \F 0 [if]
                    151: 
1.139     anton     152: \ run-time routines for non-primitives.  They are defined as
                    153: \ primitives, because that simplifies things.
                    154: 
                    155: (docol)        ( -- R:a_retaddr )      gforth-internal paren_docol
                    156: ""run-time routine for colon definitions""
1.148     anton     157: #ifdef NO_IP
                    158: a_retaddr = next_code;
                    159: INST_TAIL;
                    160: goto **(Label *)PFA(CFA);
                    161: #else /* !defined(NO_IP) */
1.141     anton     162: a_retaddr = (Cell *)IP;
1.139     anton     163: SET_IP((Xt *)PFA(CFA));
1.148     anton     164: #endif /* !defined(NO_IP) */
1.139     anton     165: 
                    166: (docon) ( -- w )       gforth-internal paren_docon
                    167: ""run-time routine for constants""
                    168: w = *(Cell *)PFA(CFA);
1.148     anton     169: #ifdef NO_IP
                    170: INST_TAIL;
                    171: goto *next_code;
                    172: #endif /* defined(NO_IP) */
1.139     anton     173: 
                    174: (dovar) ( -- a_body )  gforth-internal paren_dovar
                    175: ""run-time routine for variables and CREATEd words""
                    176: a_body = PFA(CFA);
1.148     anton     177: #ifdef NO_IP
                    178: INST_TAIL;
                    179: goto *next_code;
                    180: #endif /* defined(NO_IP) */
1.139     anton     181: 
                    182: (douser) ( -- a_user ) gforth-internal paren_douser
                    183: ""run-time routine for constants""
                    184: a_user = (Cell *)(up+*(Cell *)PFA(CFA));
1.148     anton     185: #ifdef NO_IP
                    186: INST_TAIL;
                    187: goto *next_code;
                    188: #endif /* defined(NO_IP) */
1.139     anton     189: 
                    190: (dodefer) ( -- )       gforth-internal paren_dodefer
                    191: ""run-time routine for deferred words""
1.148     anton     192: #ifndef NO_IP
1.141     anton     193: ip=IP; /* undo any ip updating that may have been performed by NEXT_P0 */
1.148     anton     194: #endif /* !defined(NO_IP) */
1.141     anton     195: SUPER_END; /* !! probably unnecessary and may lead to measurement errors */
1.161     anton     196: VM_JUMP(EXEC1(*(Xt *)PFA(CFA)));
1.139     anton     197: 
                    198: (dofield) ( n1 -- n2 ) gforth-internal paren_field
                    199: ""run-time routine for fields""
                    200: n2 = n1 + *(Cell *)PFA(CFA);
1.148     anton     201: #ifdef NO_IP
                    202: INST_TAIL;
                    203: goto *next_code;
                    204: #endif /* defined(NO_IP) */
1.139     anton     205: 
                    206: (dodoes) ( -- a_body R:a_retaddr )     gforth-internal paren_dodoes
                    207: ""run-time routine for @code{does>}-defined words""
1.148     anton     208: #ifdef NO_IP
                    209: a_retaddr = next_code;
                    210: a_body = PFA(CFA);
                    211: INST_TAIL;
                    212: goto **(Label *)DOES_CODE1(CFA);
                    213: #else /* !defined(NO_IP) */
1.141     anton     214: a_retaddr = (Cell *)IP;
1.139     anton     215: a_body = PFA(CFA);
                    216: SET_IP(DOES_CODE1(CFA));
1.148     anton     217: #endif /* !defined(NO_IP) */
1.139     anton     218: 
                    219: (does-handler) ( -- )  gforth-internal paren_does_handler
                    220: ""just a slot to have an encoding for the DOESJUMP, 
                    221: which is no longer used anyway (!! eliminate this)""
1.140     anton     222: 
                    223: \F [endif]
1.139     anton     224: 
1.83      pazsan    225: \g control
                    226: 
1.47      anton     227: noop   ( -- )          gforth
1.1       anton     228: :
                    229:  ;
                    230: 
1.112     pazsan    231: call   ( #a_callee -- R:a_retaddr )    new
                    232: ""Call callee (a variant of docol with inline argument).""
                    233: #ifdef NO_IP
1.148     anton     234: assert(0);
1.112     pazsan    235: INST_TAIL;
                    236: JUMP(a_callee);
                    237: #else
                    238: #ifdef DEBUG
                    239:     {
                    240:       CFA_TO_NAME((((Cell *)a_callee)-2));
                    241:       fprintf(stderr,"%08lx: call %08lx %.*s\n",(Cell)ip,(Cell)a_callee,
                    242:              len,name);
                    243:     }
                    244: #endif
                    245: a_retaddr = (Cell *)IP;
                    246: SET_IP((Xt *)a_callee);
                    247: #endif
1.1       anton     248: 
1.47      anton     249: execute        ( xt -- )               core
1.29      crook     250: ""Perform the semantics represented by the execution token, @i{xt}.""
1.102     anton     251: #ifndef NO_IP
1.1       anton     252: ip=IP;
1.102     anton     253: #endif
1.76      anton     254: SUPER_END;
1.161     anton     255: VM_JUMP(EXEC1(xt));
1.1       anton     256: 
1.47      anton     257: perform        ( a_addr -- )   gforth
1.55      anton     258: ""@code{@@ execute}.""
1.1       anton     259: /* and pfe */
1.102     anton     260: #ifndef NO_IP
1.1       anton     261: ip=IP;
1.102     anton     262: #endif
1.76      anton     263: SUPER_END;
1.161     anton     264: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.1       anton     265: :
                    266:  @ execute ;
                    267: 
1.112     pazsan    268: ;s     ( R:w -- )              gforth  semis
                    269: ""The primitive compiled by @code{EXIT}.""
                    270: #ifdef NO_IP
                    271: INST_TAIL;
                    272: goto *(void *)w;
                    273: #else
                    274: SET_IP((Xt *)w);
                    275: #endif
                    276: 
                    277: unloop ( R:w1 R:w2 -- )        core
                    278: /* !! alias for 2rdrop */
                    279: :
                    280:  r> rdrop rdrop >r ;
                    281: 
                    282: lit-perform    ( #a_addr -- )  new     lit_perform
                    283: #ifndef NO_IP
                    284: ip=IP;
                    285: #endif
                    286: SUPER_END;
1.161     anton     287: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.112     pazsan    288: 
                    289: does-exec ( #a_cfa -- R:nest a_pfa )   new     does_exec
                    290: #ifdef NO_IP
                    291: /* compiled to LIT CALL by compile_prim */
                    292: assert(0);
                    293: #else
                    294: a_pfa = PFA(a_cfa);
                    295: nest = (Cell)IP;
                    296: #ifdef DEBUG
                    297:     {
                    298:       CFA_TO_NAME(a_cfa);
                    299:       fprintf(stderr,"%08lx: does %08lx %.*s\n",
                    300:              (Cell)ip,(Cell)a_cfa,len,name);
                    301:     }
                    302: #endif
                    303: SET_IP(DOES_CODE1(a_cfa));
                    304: #endif
                    305: 
1.15      pazsan    306: \+glocals
1.1       anton     307: 
1.112     pazsan    308: branch-lp+!# ( #a_target #nlocals -- ) gforth  branch_lp_plus_store_number
1.1       anton     309: /* this will probably not be used */
1.68      anton     310: lp += nlocals;
1.112     pazsan    311: #ifdef NO_IP
                    312: INST_TAIL;
                    313: JUMP(a_target);
                    314: #else
                    315: SET_IP((Xt *)a_target);
                    316: #endif
1.1       anton     317: 
1.15      pazsan    318: \+
1.1       anton     319: 
1.112     pazsan    320: branch ( #a_target -- )        gforth
                    321: #ifdef NO_IP
                    322: INST_TAIL;
                    323: JUMP(a_target);
                    324: #else
                    325: SET_IP((Xt *)a_target);
                    326: #endif
1.1       anton     327: :
1.112     pazsan    328:  r> @ >r ;
1.1       anton     329: 
1.112     pazsan    330: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     331: \ this is non-syntactical: code must open a brace that is closed by the macro
1.159     anton     332: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
                    333: \ this is non-syntactical: code must open a brace that is closed by the macro
1.1       anton     334: define(condbranch,
1.159     anton     335: $1 ( `#'a_target $2 ) $3
                    336: $4     #ifdef NO_IP
                    337: INST_TAIL;
                    338: #endif
                    339: $5     #ifdef NO_IP
                    340: JUMP(a_target);
                    341: #else
                    342: SET_IP((Xt *)a_target);
                    343: #endif
                    344: }
                    345: $6
                    346: 
                    347: \+glocals
                    348: 
                    349: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    350: $4     #ifdef NO_IP
                    351: INST_TAIL;
                    352: #endif
                    353: $5     lp += nlocals;
                    354: #ifdef NO_IP
                    355: JUMP(a_target);
                    356: #else
                    357: SET_IP((Xt *)a_target);
                    358: #endif
                    359: }
                    360: 
                    361: \+
                    362: )
                    363: 
                    364: \ version that generates two jumps (not good for PR 15242 workaround)
                    365: define(condbranch_twojump,
1.112     pazsan    366: $1 ( `#'a_target $2 ) $3
                    367: $4     #ifdef NO_IP
1.96      anton     368: INST_TAIL;
1.112     pazsan    369: #endif
                    370: $5     #ifdef NO_IP
                    371: JUMP(a_target);
                    372: #else
                    373: SET_IP((Xt *)a_target);
                    374: INST_TAIL; NEXT_P2;
                    375: #endif
1.1       anton     376: }
1.87      anton     377: SUPER_CONTINUE;
1.112     pazsan    378: $6
1.1       anton     379: 
1.15      pazsan    380: \+glocals
1.1       anton     381: 
1.112     pazsan    382: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    383: $4     #ifdef NO_IP
1.96      anton     384: INST_TAIL;
1.112     pazsan    385: #endif
                    386: $5     lp += nlocals;
                    387: #ifdef NO_IP
                    388: JUMP(a_target);
                    389: #else
                    390: SET_IP((Xt *)a_target);
                    391: INST_TAIL; NEXT_P2;
                    392: #endif
1.1       anton     393: }
1.87      anton     394: SUPER_CONTINUE;
1.1       anton     395: 
1.15      pazsan    396: \+
1.1       anton     397: )
                    398: 
1.68      anton     399: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    400: ,if (f==0) {
1.5       jwilke    401: ,:
1.112     pazsan    402:  0= dup 0=          \ !f f
                    403:  r> tuck cell+      \ !f branchoffset f IP+
                    404:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    405:  >r ;)
1.1       anton     406: 
                    407: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    408: \ is only used in if's (yet)
                    409: 
1.15      pazsan    410: \+xconds
1.1       anton     411: 
1.172     anton     412: ?dup-?branch   ( #a_target f -- S:... )        new     question_dupe_question_branch
1.1       anton     413: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    414: if (f==0) {
1.112     pazsan    415: #ifdef NO_IP
                    416: INST_TAIL;
                    417: JUMP(a_target);
                    418: #else
                    419: SET_IP((Xt *)a_target);
                    420: #endif
1.174     anton     421: } else {
1.172     anton     422: sp--;
                    423: sp[0]=f;
1.174     anton     424: }
1.1       anton     425: 
1.172     anton     426: ?dup-0=-?branch ( #a_target f -- S:... ) new   question_dupe_zero_equals_question_branch
1.1       anton     427: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    428: if (f!=0) {
                    429:   sp--;
1.172     anton     430:   sp[0]=f;
1.112     pazsan    431: #ifdef NO_IP
                    432:   JUMP(a_target);
                    433: #else
                    434:   SET_IP((Xt *)a_target);
                    435: #endif
1.1       anton     436: }
                    437: 
1.15      pazsan    438: \+
1.31      jwilke    439: \fhas? skiploopprims 0= [IF]
1.1       anton     440: 
1.68      anton     441: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     442: n2=n1-1;
1.112     pazsan    443: ,if (n1) {
1.1       anton     444: ,:
                    445:  r> r> dup 1- >r
1.112     pazsan    446:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     447: 
1.68      anton     448: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     449: n2=n1+1;
1.112     pazsan    450: ,if (n2 != nlimit) {
1.1       anton     451: ,:
                    452:  r> r> 1+ r> 2dup =
                    453:  IF >r 1- >r cell+ >r
1.112     pazsan    454:  ELSE >r >r @ >r THEN ;)
1.1       anton     455: 
1.68      anton     456: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     457: /* !! check this thoroughly */
                    458: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    459: /* dependent upon two's complement arithmetic */
1.65      anton     460: Cell olddiff = n1-nlimit;
                    461: n2=n1+n;       
1.149     anton     462: ,if (((olddiff^(olddiff+n))    /* the limit is not crossed */
                    463:      &(olddiff^n))            /* OR it is a wrap-around effect */
                    464:     >=0) { /* & is used to avoid having two branches for gforth-native */
1.1       anton     465: ,:
                    466:  r> swap
                    467:  r> r> 2dup - >r
                    468:  2 pick r@ + r@ xor 0< 0=
                    469:  3 pick r> xor 0< 0= or
1.112     pazsan    470:  IF    >r + >r @ >r
1.1       anton     471:  ELSE  >r >r drop cell+ >r THEN ;)
                    472: 
1.15      pazsan    473: \+xconds
1.1       anton     474: 
1.68      anton     475: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     476: UCell olddiff = n1-nlimit;
                    477: n2=n1-u;
1.112     pazsan    478: ,if (olddiff>u) {
1.1       anton     479: ,)
                    480: 
1.68      anton     481: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     482: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    483: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    484: version of (+LOOP).""
                    485: /* !! check this thoroughly */
1.65      anton     486: Cell diff = n1-nlimit;
1.1       anton     487: Cell newdiff = diff+n;
                    488: if (n<0) {
                    489:     diff = -diff;
                    490:     newdiff = -newdiff;
                    491: }
1.65      anton     492: n2=n1+n;
1.149     anton     493: ,if (((~diff)|newdiff)<0) { /* use | to avoid two branches for gforth-native */
1.1       anton     494: ,)
                    495: 
1.15      pazsan    496: \+
1.1       anton     497: 
1.112     pazsan    498: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     499: /* or (for) = >r -- collides with unloop! */
1.65      anton     500: nlimit=0;
1.1       anton     501: :
                    502:  r> swap 0 >r >r >r ;
                    503: 
1.112     pazsan    504: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     505: :
                    506:  r> swap rot >r >r >r ;
                    507: 
1.112     pazsan    508: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    509: #ifdef NO_IP
                    510:     INST_TAIL;
                    511: #endif
1.1       anton     512: if (nstart == nlimit) {
1.112     pazsan    513: #ifdef NO_IP
                    514:     JUMP(a_target);
                    515: #else
                    516:     SET_IP((Xt *)a_target);
                    517: #endif
1.1       anton     518: }
                    519: :
                    520:   2dup =
                    521:   IF   r> swap rot >r >r
1.112     pazsan    522:        @ >r
1.1       anton     523:   ELSE r> swap rot >r >r
                    524:        cell+ >r
                    525:   THEN ;                               \ --> CORE-EXT
                    526: 
1.15      pazsan    527: \+xconds
1.1       anton     528: 
1.112     pazsan    529: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    530: #ifdef NO_IP
                    531:     INST_TAIL;
                    532: #endif
1.1       anton     533: if (nstart >= nlimit) {
1.112     pazsan    534: #ifdef NO_IP
                    535:     JUMP(a_target);
                    536: #else
                    537:     SET_IP((Xt *)a_target);
                    538: #endif
1.1       anton     539: }
                    540: :
                    541:  swap 2dup
                    542:  r> swap >r swap >r
                    543:  >=
                    544:  IF
1.112     pazsan    545:      @
1.1       anton     546:  ELSE
                    547:      cell+
                    548:  THEN  >r ;
                    549: 
1.112     pazsan    550: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    551: #ifdef NO_IP
                    552:     INST_TAIL;
                    553: #endif
1.1       anton     554: if (ustart >= ulimit) {
1.112     pazsan    555: #ifdef NO_IP
                    556: JUMP(a_target);
                    557: #else
                    558: SET_IP((Xt *)a_target);
                    559: #endif
1.1       anton     560: }
                    561: :
                    562:  swap 2dup
                    563:  r> swap >r swap >r
                    564:  u>=
                    565:  IF
1.112     pazsan    566:      @
1.1       anton     567:  ELSE
                    568:      cell+
                    569:  THEN  >r ;
                    570: 
1.112     pazsan    571: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    572: #ifdef NO_IP
                    573:     INST_TAIL;
                    574: #endif
1.1       anton     575: if (nstart <= nlimit) {
1.112     pazsan    576: #ifdef NO_IP
                    577: JUMP(a_target);
                    578: #else
                    579: SET_IP((Xt *)a_target);
                    580: #endif
1.1       anton     581: }
                    582: :
                    583:  swap 2dup
                    584:  r> swap >r swap >r
                    585:  <=
                    586:  IF
1.112     pazsan    587:      @
1.1       anton     588:  ELSE
                    589:      cell+
                    590:  THEN  >r ;
                    591: 
1.112     pazsan    592: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    593: #ifdef NO_IP
                    594:     INST_TAIL;
                    595: #endif
1.1       anton     596: if (ustart <= ulimit) {
1.112     pazsan    597: #ifdef NO_IP
                    598: JUMP(a_target);
                    599: #else
                    600: SET_IP((Xt *)a_target);
                    601: #endif
1.1       anton     602: }
                    603: :
                    604:  swap 2dup
                    605:  r> swap >r swap >r
                    606:  u<=
                    607:  IF
1.112     pazsan    608:      @
1.1       anton     609:  ELSE
                    610:      cell+
                    611:  THEN  >r ;
                    612: 
1.15      pazsan    613: \+
1.1       anton     614: 
1.5       jwilke    615: \ don't make any assumptions where the return stack is!!
                    616: \ implement this in machine code if it should run quickly!
                    617: 
1.65      anton     618: i      ( R:n -- R:n n )                core
1.1       anton     619: :
1.5       jwilke    620: \ rp@ cell+ @ ;
                    621:   r> r> tuck >r >r ;
1.1       anton     622: 
1.65      anton     623: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     624: :
1.5       jwilke    625: \ rp@ cell+ cell+ @ ;
                    626:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    627: variable itmp
1.1       anton     628: 
1.65      anton     629: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     630: :
1.5       jwilke    631: \ rp@ cell+ cell+ cell+ @ ;
                    632:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    633: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     634: 
1.65      anton     635: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     636: :
1.5       jwilke    637: \ rp@ [ 5 cells ] Literal + @ ;
                    638:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    639: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    640: 
                    641: \f[THEN]
1.1       anton     642: 
                    643: \ digit is high-level: 0/0%
                    644: 
1.83      pazsan    645: \g strings
                    646: 
1.47      anton     647: move   ( c_from c_to ucount -- )               core
1.52      anton     648: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     649: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     650: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     651: memmove(c_to,c_from,ucount);
                    652: /* make an Ifdef for bsd and others? */
                    653: :
                    654:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    655: 
1.47      anton     656: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     657: ""Copy the contents of @i{ucount} characters from data space at
                    658: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    659: from low address to high address; i.e., for overlapping areas it is
                    660: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     661: cmove(c_from,c_to,u);
1.1       anton     662: :
                    663:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    664: 
1.47      anton     665: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     666: ""Copy the contents of @i{ucount} characters from data space at
                    667: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    668: from high address to low address; i.e., for overlapping areas it is
                    669: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     670: cmove_up(c_from,c_to,u);
1.1       anton     671: :
                    672:  dup 0= IF  drop 2drop exit  THEN
                    673:  rot over + -rot bounds swap 1-
                    674:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    675: 
1.47      anton     676: fill   ( c_addr u c -- )       core
1.52      anton     677: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     678: memset(c_addr,c,u);
                    679: :
                    680:  -rot bounds
                    681:  ?DO  dup I c!  LOOP  drop ;
                    682: 
1.47      anton     683: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     684: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    685: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     686: is 1. Currently this is based on the machine's character
1.26      crook     687: comparison. In the future, this may change to consider the current
1.1       anton     688: locale and its collation order.""
1.46      pazsan    689: /* close ' to keep fontify happy */ 
1.125     anton     690: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     691: :
1.43      pazsan    692:  rot 2dup swap - >r min swap -text dup
                    693:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    694: : -text ( c_addr1 u c_addr2 -- n )
                    695:  swap bounds
                    696:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    697:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    698: : sgn ( n -- -1/0/1 )
                    699:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     700: 
1.125     anton     701: \ -text is only used by replaced primitives now; move it elsewhere
                    702: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    703: \ n = memcmp(c_addr1, c_addr2, u);
                    704: \ if (n<0)
                    705: \   n = -1;
                    706: \ else if (n>0)
                    707: \   n = 1;
                    708: \ :
                    709: \  swap bounds
                    710: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    711: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    712: \ : sgn ( n -- -1/0/1 )
                    713: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     714: 
1.47      anton     715: toupper        ( c1 -- c2 )    gforth
1.29      crook     716: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     717: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     718: c2 = toupper(c1);
                    719: :
                    720:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    721: 
1.188     pazsan    722: capscompare    ( c_addr1 u1 c_addr2 u2 -- n )  string
                    723: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    724: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
                    725: is 1. Currently this is based on the machine's character
                    726: comparison. In the future, this may change to consider the current
                    727: locale and its collation order.""
                    728: /* close ' to keep fontify happy */ 
                    729: n = capscompare(c_addr1, u1, c_addr2, u2);
                    730: 
1.47      anton     731: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     732: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     733: characters from the start of the string.""
1.1       anton     734: c_addr2 = c_addr1+n;
                    735: u2 = u1-n;
                    736: :
                    737:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    738: 
1.83      pazsan    739: \g arith
                    740: 
1.112     pazsan    741: lit    ( #w -- w )             gforth
                    742: :
                    743:  r> dup @ swap cell+ >r ;
                    744: 
1.47      anton     745: +      ( n1 n2 -- n )          core    plus
1.1       anton     746: n = n1+n2;
                    747: 
1.112     pazsan    748: \ lit+ / lit_plus = lit +
                    749: 
                    750: lit+   ( n1 #n2 -- n )         new     lit_plus
                    751: n=n1+n2;
                    752: 
1.1       anton     753: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     754: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     755: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     756: n = n1+n3;
                    757: :
                    758:  rot + swap ;
                    759: 
1.47      anton     760: -      ( n1 n2 -- n )          core    minus
1.1       anton     761: n = n1-n2;
                    762: :
                    763:  negate + ;
                    764: 
1.47      anton     765: negate ( n1 -- n2 )            core
1.1       anton     766: /* use minus as alias */
                    767: n2 = -n1;
                    768: :
                    769:  invert 1+ ;
                    770: 
1.47      anton     771: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     772: n2 = n1+1;
                    773: :
                    774:  1 + ;
                    775: 
1.47      anton     776: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     777: n2 = n1-1;
                    778: :
                    779:  1 - ;
                    780: 
1.47      anton     781: max    ( n1 n2 -- n )  core
1.1       anton     782: if (n1<n2)
                    783:   n = n2;
                    784: else
                    785:   n = n1;
                    786: :
                    787:  2dup < IF swap THEN drop ;
                    788: 
1.47      anton     789: min    ( n1 n2 -- n )  core
1.1       anton     790: if (n1<n2)
                    791:   n = n1;
                    792: else
                    793:   n = n2;
                    794: :
                    795:  2dup > IF swap THEN drop ;
                    796: 
1.52      anton     797: abs    ( n -- u )      core
                    798: if (n<0)
                    799:   u = -n;
1.1       anton     800: else
1.52      anton     801:   u = n;
1.1       anton     802: :
                    803:  dup 0< IF negate THEN ;
                    804: 
1.47      anton     805: *      ( n1 n2 -- n )          core    star
1.1       anton     806: n = n1*n2;
                    807: :
                    808:  um* drop ;
                    809: 
1.47      anton     810: /      ( n1 n2 -- n )          core    slash
1.1       anton     811: n = n1/n2;
1.200     anton     812: if (CHECK_DIVISION_SW && n2 == 0)
1.198     anton     813:   throw(BALL_DIVZERO);
1.200     anton     814: if (CHECK_DIVISION_SW && n2 == -1 && n1 == CELL_MIN)
1.198     anton     815:   throw(BALL_RESULTRANGE);
1.197     anton     816: if (FLOORED_DIV && ((n1^n2) < 0) && (n1%n2 != 0))
                    817:   n--;
1.1       anton     818: :
                    819:  /mod nip ;
                    820: 
1.47      anton     821: mod    ( n1 n2 -- n )          core
1.1       anton     822: n = n1%n2;
1.200     anton     823: if (CHECK_DIVISION_SW && n2 == 0)
1.198     anton     824:   throw(BALL_DIVZERO);
1.200     anton     825: if (CHECK_DIVISION_SW && n2 == -1 && n1 == CELL_MIN)
1.198     anton     826:   throw(BALL_RESULTRANGE);
1.169     pazsan    827: if(FLOORED_DIV && ((n1^n2) < 0) && n!=0) n += n2;
1.1       anton     828: :
                    829:  /mod drop ;
                    830: 
1.47      anton     831: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     832: n4 = n1/n2;
                    833: n3 = n1%n2; /* !! is this correct? look into C standard! */
1.200     anton     834: if (CHECK_DIVISION_SW && n2 == 0)
1.198     anton     835:   throw(BALL_DIVZERO);
1.200     anton     836: if (CHECK_DIVISION_SW && n2 == -1 && n1 == CELL_MIN)
1.198     anton     837:   throw(BALL_RESULTRANGE);
1.169     pazsan    838: if (FLOORED_DIV && ((n1^n2) < 0) && n3!=0) {
1.162     pazsan    839:   n4--;
                    840:   n3+=n2;
                    841: }
1.1       anton     842: :
                    843:  >r s>d r> fm/mod ;
                    844: 
1.162     pazsan    845: */mod  ( n1 n2 n3 -- n4 n5 )   core    star_slash_mod
                    846: ""n1*n2=n3*n5+n4, with the intermediate result (n1*n2) being double.""
                    847: #ifdef BUGGY_LL_MUL
                    848: DCell d = mmul(n1,n2);
                    849: #else
                    850: DCell d = (DCell)n1 * (DCell)n2;
                    851: #endif
1.202   ! anton     852: #ifdef ASM_SM_SLASH_REM
        !           853: ASM_SM_SLASH_REM(DLO(d), DHI(d), n3, n4, n5);
        !           854: if (((DHI(d)^n3)<0) && n4!=0) {
        !           855:   if (CHECK_DIVISION && n5 == CELL_MIN)
        !           856:     throw(BALL_RESULTRANGE);
        !           857:   n5--;
        !           858:   n4+=n3;
        !           859: }
        !           860: #else
1.162     pazsan    861: DCell r = fmdiv(d,n3);
                    862: n4=DHI(r);
                    863: n5=DLO(r);
                    864: #endif
                    865: :
                    866:  >r m* r> fm/mod ;
                    867: 
                    868: */     ( n1 n2 n3 -- n4 )      core    star_slash
                    869: ""n4=(n1*n2)/n3, with the intermediate result being double.""
                    870: #ifdef BUGGY_LL_MUL
                    871: DCell d = mmul(n1,n2);
                    872: #else
                    873: DCell d = (DCell)n1 * (DCell)n2;
                    874: #endif
1.202   ! anton     875: #ifdef ASM_SM_SLASH_REM
        !           876: Cell remainder;
        !           877: ASM_SM_SLASH_REM(DLO(d), DHI(d), n3, remainder, n4);
        !           878: if (((DHI(d)^n3)<0) && remainder!=0) {
        !           879:   if (CHECK_DIVISION && n4 == CELL_MIN)
        !           880:     throw(BALL_RESULTRANGE);
        !           881:   n4--;
        !           882: }
        !           883: #else
1.162     pazsan    884: DCell r = fmdiv(d,n3);
1.168     pazsan    885: n4=DLO(r);
1.162     pazsan    886: #endif
                    887: :
                    888:  */mod nip ;
                    889: 
1.47      anton     890: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     891: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     892: n2 = 2*n1;
                    893: :
                    894:  dup + ;
                    895: 
1.47      anton     896: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     897: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    898: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     899: n2 = n1>>1;
                    900: :
                    901:  dup MINI and IF 1 ELSE 0 THEN
1.187     pazsan    902:  [ bits/char cell * 1- ] literal 
1.5       jwilke    903:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     904:      IF 1 ELSE 0 THEN or r> swap
                    905:  LOOP nip ;
                    906: 
1.47      anton     907: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     908: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.201     anton     909: #ifdef ASM_SM_SLASH_REM
1.158     pazsan    910: #ifdef BUGGY_LL_DIV
1.165     anton     911: ASM_SM_SLASH_REM(d1.lo, d1.hi, n1, n2, n3);
1.169     pazsan    912: if (((DHI(d1)^n1)<0) && n2!=0) {
1.200     anton     913:   if (CHECK_DIVISION && n3 == CELL_MIN)
1.198     anton     914:     throw(BALL_RESULTRANGE);
1.165     anton     915:   n3--;
                    916:   n2+=n1;
                    917: }
1.1       anton     918: #else
1.166     anton     919: ASM_SM_SLASH_REM4(d1, n1, n2, n3);
1.169     pazsan    920: if (((DHI(d1)^n1)<0) && n2!=0) {
1.200     anton     921:   if (CHECK_DIVISION && n3 == CELL_MIN)
1.198     anton     922:     throw(BALL_RESULTRANGE);
1.166     anton     923:   n3--;
                    924:   n2+=n1;
                    925: }
1.1       anton     926: #endif
1.201     anton     927: #else /* !defined(ASM_SM_SLASH_REM) */
                    928: DCell r = fmdiv(d1,n1);
                    929: n2=DHI(r);
                    930: n3=DLO(r);
                    931: #endif /* !defined(ADM_SM_SLASH_REM) */
1.1       anton     932: :
                    933:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    934:  over       0< IF  tuck + swap  THEN
                    935:  um/mod
                    936:  r> 0< IF  swap negate swap  THEN ;
                    937: 
1.47      anton     938: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     939: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.158     pazsan    940: #ifdef BUGGY_LL_DIV
1.165     anton     941: #ifdef ASM_SM_SLASH_REM
                    942: ASM_SM_SLASH_REM(d1.lo, d1.hi, n1, n2, n3);
                    943: #else /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     944: DCell r = smdiv(d1,n1);
1.162     pazsan    945: n2=DHI(r);
                    946: n3=DLO(r);
1.165     anton     947: #endif /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     948: #else
1.166     anton     949: #ifdef ASM_SM_SLASH_REM4
                    950: ASM_SM_SLASH_REM4(d1, n1, n2, n3);
                    951: #else /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     952: /* assumes that the processor uses either floored or symmetric division */
1.198     anton     953: DCell d3 = d1/n1;
1.1       anton     954: n2 = d1%n1;
1.200     anton     955: if (CHECK_DIVISION_SW && n1 == 0)
1.198     anton     956:   throw(BALL_DIVZERO);
1.1       anton     957: /* note that this 1%-3<0 is optimized by the compiler */
1.169     pazsan    958: if (1%-3<0 && ((DHI(d1)^n1)<0) && n2!=0) {
1.198     anton     959:   d3++;
1.1       anton     960:   n2-=n1;
                    961: }
1.198     anton     962: n3 = d3;
1.200     anton     963: if (CHECK_DIVISION && d3 != n3)
1.198     anton     964:   throw(BALL_RESULTRANGE);
1.166     anton     965: #endif /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     966: #endif
                    967: :
                    968:  over >r dup >r abs -rot
                    969:  dabs rot um/mod
                    970:  r> r@ xor 0< IF       negate       THEN
                    971:  r>        0< IF  swap negate swap  THEN ;
                    972: 
1.47      anton     973: m*     ( n1 n2 -- d )          core    m_star
1.158     pazsan    974: #ifdef BUGGY_LL_MUL
1.1       anton     975: d = mmul(n1,n2);
                    976: #else
                    977: d = (DCell)n1 * (DCell)n2;
                    978: #endif
                    979: :
                    980:  2dup      0< and >r
                    981:  2dup swap 0< and >r
                    982:  um* r> - r> - ;
                    983: 
1.47      anton     984: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     985: /* use u* as alias */
1.158     pazsan    986: #ifdef BUGGY_LL_MUL
1.1       anton     987: ud = ummul(u1,u2);
                    988: #else
                    989: ud = (UDCell)u1 * (UDCell)u2;
                    990: #endif
                    991: :
1.137     pazsan    992:    0 -rot dup [ 8 cells ] literal -
1.1       anton     993:    DO
1.137     pazsan    994:        dup 0< I' and d2*+ drop
                    995:    LOOP ;
1.1       anton     996: : d2*+ ( ud n -- ud+n c )
                    997:    over MINI
                    998:    and >r >r 2dup d+ swap r> + swap r> ;
                    999: 
1.47      anton    1000: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton    1001: ""ud=u3*u1+u2, u1>u2>=0""
1.158     pazsan   1002: #ifdef BUGGY_LL_DIV
1.165     anton    1003: #ifdef ASM_UM_SLASH_MOD
                   1004: ASM_UM_SLASH_MOD(ud.lo, ud.hi, u1, u2, u3);
                   1005: #else /* !defined(ASM_UM_SLASH_MOD) */
1.1       anton    1006: UDCell r = umdiv(ud,u1);
1.162     pazsan   1007: u2=DHI(r);
                   1008: u3=DLO(r);
1.165     anton    1009: #endif /* !defined(ASM_UM_SLASH_MOD) */
1.1       anton    1010: #else
1.166     anton    1011: #ifdef ASM_UM_SLASH_MOD4
1.167     anton    1012: ASM_UM_SLASH_MOD4(ud, u1, u2, u3);
1.166     anton    1013: #else /* !defined(ASM_UM_SLASH_MOD4) */
1.198     anton    1014: UDCell ud3 = ud/u1;
1.1       anton    1015: u2 = ud%u1;
1.200     anton    1016: if (CHECK_DIVISION_SW && u1 == 0)
1.198     anton    1017:   throw(BALL_DIVZERO);
                   1018: u3 = ud3;
1.200     anton    1019: if (CHECK_DIVISION && ud3 != u3)
1.198     anton    1020:   throw(BALL_RESULTRANGE);
1.166     anton    1021: #endif /* !defined(ASM_UM_SLASH_MOD4) */
1.1       anton    1022: #endif
                   1023: :
                   1024:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke   1025:    ?DO /modstep
1.1       anton    1026:    LOOP drop swap 1 rshift or swap ;
                   1027: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke   1028:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton    1029: : d2*+ ( ud n -- ud+n c )
                   1030:    over MINI
                   1031:    and >r >r 2dup d+ swap r> + swap r> ;
                   1032: 
1.47      anton    1033: m+     ( d1 n -- d2 )          double          m_plus
1.158     pazsan   1034: #ifdef BUGGY_LL_ADD
                   1035: DLO_IS(d2, DLO(d1)+n);
                   1036: DHI_IS(d2, DHI(d1) - (n<0) + (DLO(d2)<DLO(d1)));
1.1       anton    1037: #else
                   1038: d2 = d1+n;
                   1039: #endif
                   1040: :
                   1041:  s>d d+ ;
                   1042: 
1.47      anton    1043: d+     ( d1 d2 -- d )          double  d_plus
1.158     pazsan   1044: #ifdef BUGGY_LL_ADD
                   1045: DLO_IS(d, DLO(d1) + DLO(d2));
                   1046: DHI_IS(d, DHI(d1) + DHI(d2) + (d.lo<DLO(d1)));
1.1       anton    1047: #else
                   1048: d = d1+d2;
                   1049: #endif
                   1050: :
                   1051:  rot + >r tuck + swap over u> r> swap - ;
                   1052: 
1.47      anton    1053: d-     ( d1 d2 -- d )          double          d_minus
1.158     pazsan   1054: #ifdef BUGGY_LL_ADD
                   1055: DLO_IS(d, DLO(d1) - DLO(d2));
                   1056: DHI_IS(d, DHI(d1)-DHI(d2)-(DLO(d1)<DLO(d2)));
1.1       anton    1057: #else
                   1058: d = d1-d2;
                   1059: #endif
                   1060: :
                   1061:  dnegate d+ ;
                   1062: 
1.47      anton    1063: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton    1064: /* use dminus as alias */
1.158     pazsan   1065: #ifdef BUGGY_LL_ADD
1.1       anton    1066: d2 = dnegate(d1);
                   1067: #else
                   1068: d2 = -d1;
                   1069: #endif
                   1070: :
                   1071:  invert swap negate tuck 0= - ;
                   1072: 
1.47      anton    1073: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton    1074: ""Shift left by 1; also works on unsigned numbers""
1.158     pazsan   1075: #ifdef BUGGY_LL_SHIFT
                   1076: DLO_IS(d2, DLO(d1)<<1);
                   1077: DHI_IS(d2, (DHI(d1)<<1) | (DLO(d1)>>(CELL_BITS-1)));
1.1       anton    1078: #else
                   1079: d2 = 2*d1;
                   1080: #endif
                   1081: :
                   1082:  2dup d+ ;
                   1083: 
1.47      anton    1084: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton    1085: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                   1086: division by 2.""
1.158     pazsan   1087: #ifdef BUGGY_LL_SHIFT
                   1088: DHI_IS(d2, DHI(d1)>>1);
                   1089: DLO_IS(d2, (DLO(d1)>>1) | (DHI(d1)<<(CELL_BITS-1)));
1.1       anton    1090: #else
                   1091: d2 = d1>>1;
                   1092: #endif
                   1093: :
                   1094:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                   1095:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                   1096: 
1.47      anton    1097: and    ( w1 w2 -- w )          core
1.1       anton    1098: w = w1&w2;
                   1099: 
1.47      anton    1100: or     ( w1 w2 -- w )          core
1.1       anton    1101: w = w1|w2;
                   1102: :
                   1103:  invert swap invert and invert ;
                   1104: 
1.47      anton    1105: xor    ( w1 w2 -- w )          core    x_or
1.1       anton    1106: w = w1^w2;
                   1107: 
1.47      anton    1108: invert ( w1 -- w2 )            core
1.1       anton    1109: w2 = ~w1;
                   1110: :
                   1111:  MAXU xor ;
                   1112: 
1.47      anton    1113: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton    1114: ""Logical shift right by @i{n} bits.""
1.154     pazsan   1115: #ifdef BROKEN_SHIFT
                   1116:   u2 = rshift(u1, n);
                   1117: #else
                   1118:   u2 = u1 >> n;
                   1119: #endif
1.1       anton    1120: :
                   1121:     0 ?DO 2/ MAXI and LOOP ;
                   1122: 
1.47      anton    1123: lshift ( u1 n -- u2 )          core    l_shift
1.154     pazsan   1124: #ifdef BROKEN_SHIFT
                   1125:   u2 = lshift(u1, n);
                   1126: #else
                   1127:   u2 = u1 << n;
                   1128: #endif
1.1       anton    1129: :
                   1130:     0 ?DO 2* LOOP ;
                   1131: 
1.110     pazsan   1132: \g compare
                   1133: 
1.1       anton    1134: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1135: define(comparisons,
1.47      anton    1136: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1137: f = FLAG($4==$5);
                   1138: :
                   1139:     [ char $1x char 0 = [IF]
                   1140:        ] IF false ELSE true THEN [
                   1141:     [ELSE]
                   1142:        ] xor 0= [
                   1143:     [THEN] ] ;
                   1144: 
1.47      anton    1145: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1146: f = FLAG($4!=$5);
                   1147: :
                   1148:     [ char $1x char 0 = [IF]
                   1149:        ] IF true ELSE false THEN [
                   1150:     [ELSE]
                   1151:        ] xor 0<> [
                   1152:     [THEN] ] ;
                   1153: 
1.47      anton    1154: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1155: f = FLAG($4<$5);
                   1156: :
                   1157:     [ char $1x char 0 = [IF]
                   1158:        ] MINI and 0<> [
                   1159:     [ELSE] char $1x char u = [IF]
                   1160:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                   1161:        [ELSE]
                   1162:            ] MINI xor >r MINI xor r> u< [
                   1163:        [THEN]
                   1164:     [THEN] ] ;
                   1165: 
1.47      anton    1166: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1167: f = FLAG($4>$5);
                   1168: :
                   1169:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1170:     $1< ;
                   1171: 
1.47      anton    1172: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1173: f = FLAG($4<=$5);
                   1174: :
                   1175:     $1> 0= ;
                   1176: 
1.47      anton    1177: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1178: f = FLAG($4>=$5);
                   1179: :
                   1180:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1181:     $1<= ;
                   1182: 
                   1183: )
                   1184: 
                   1185: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1186: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1187: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1188: 
                   1189: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1190: define(dcomparisons,
1.47      anton    1191: $1=    ( $2 -- f )             $6      $3equals
1.158     pazsan   1192: #ifdef BUGGY_LL_CMP
1.1       anton    1193: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1194: #else
                   1195: f = FLAG($4==$5);
                   1196: #endif
                   1197: 
1.47      anton    1198: $1<>   ( $2 -- f )             $7      $3not_equals
1.158     pazsan   1199: #ifdef BUGGY_LL_CMP
1.1       anton    1200: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1201: #else
                   1202: f = FLAG($4!=$5);
                   1203: #endif
                   1204: 
1.47      anton    1205: $1<    ( $2 -- f )             $8      $3less_than
1.158     pazsan   1206: #ifdef BUGGY_LL_CMP
1.1       anton    1207: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1208: #else
                   1209: f = FLAG($4<$5);
                   1210: #endif
                   1211: 
1.47      anton    1212: $1>    ( $2 -- f )             $9      $3greater_than
1.158     pazsan   1213: #ifdef BUGGY_LL_CMP
1.1       anton    1214: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1215: #else
                   1216: f = FLAG($4>$5);
                   1217: #endif
                   1218: 
1.47      anton    1219: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.158     pazsan   1220: #ifdef BUGGY_LL_CMP
1.1       anton    1221: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1222: #else
                   1223: f = FLAG($4<=$5);
                   1224: #endif
                   1225: 
1.47      anton    1226: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.158     pazsan   1227: #ifdef BUGGY_LL_CMP
1.1       anton    1228: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1229: #else
                   1230: f = FLAG($4>=$5);
                   1231: #endif
                   1232: 
                   1233: )
                   1234: 
1.15      pazsan   1235: \+dcomps
1.1       anton    1236: 
                   1237: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1238: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1239: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1240: 
1.15      pazsan   1241: \+
1.1       anton    1242: 
1.47      anton    1243: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1244: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1245: unsigned and signed numbers (but not a mixture).  Another way to think
                   1246: about this word is to consider the numbers as a circle (wrapping
                   1247: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1248: min-n for signed numbers); now consider the range from u2 towards
                   1249: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1250: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1251: f = FLAG(u1-u2 < u3-u2);
                   1252: :
                   1253:  over - >r - r> u< ;
                   1254: 
1.112     pazsan   1255: \g stack
                   1256: 
                   1257: useraddr       ( #u -- a_addr )        new
                   1258: a_addr = (Cell *)(up+u);
                   1259: 
                   1260: up!    ( a_addr -- )   gforth  up_store
1.190     pazsan   1261: gforth_UP=up=(Address)a_addr;
1.112     pazsan   1262: :
                   1263:  up ! ;
                   1264: Variable UP
                   1265: 
1.172     anton    1266: sp@    ( S:... -- a_addr )             gforth          sp_fetch
                   1267: a_addr = sp;
1.1       anton    1268: 
1.172     anton    1269: sp!    ( a_addr -- S:... )             gforth          sp_store
1.1       anton    1270: sp = a_addr;
                   1271: 
1.47      anton    1272: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1273: a_addr = rp;
                   1274: 
1.47      anton    1275: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1276: rp = a_addr;
                   1277: 
1.15      pazsan   1278: \+floating
1.1       anton    1279: 
1.172     anton    1280: fp@    ( f:... -- f_addr )     gforth  fp_fetch
1.1       anton    1281: f_addr = fp;
                   1282: 
1.172     anton    1283: fp!    ( f_addr -- f:... )     gforth  fp_store
1.1       anton    1284: fp = f_addr;
                   1285: 
1.15      pazsan   1286: \+
1.1       anton    1287: 
1.65      anton    1288: >r     ( w -- R:w )            core    to_r
1.1       anton    1289: :
                   1290:  (>r) ;
                   1291: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1292: 
1.65      anton    1293: r>     ( R:w -- w )            core    r_from
1.1       anton    1294: :
                   1295:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1296: Create (rdrop) ' ;s A,
                   1297: 
1.65      anton    1298: rdrop  ( R:w -- )              gforth
1.1       anton    1299: :
                   1300:  r> r> drop >r ;
                   1301: 
1.136     pazsan   1302: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1303: :
                   1304:  swap r> swap >r swap >r >r ;
                   1305: 
1.136     pazsan   1306: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1307: :
                   1308:  r> r> swap r> swap >r swap ;
                   1309: 
1.136     pazsan   1310: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1311: :
                   1312:  i' j ;
                   1313: 
1.136     pazsan   1314: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1315: :
                   1316:  r> r> drop r> drop >r ;
                   1317: 
1.47      anton    1318: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1319: :
                   1320:  sp@ cell+ @ ;
                   1321: 
1.47      anton    1322: drop   ( w -- )                core
1.1       anton    1323: :
                   1324:  IF THEN ;
                   1325: 
1.47      anton    1326: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1327: :
                   1328:  >r (swap) ! r> (swap) @ ;
                   1329: Variable (swap)
                   1330: 
1.47      anton    1331: dup    ( w -- w w )            core    dupe
1.1       anton    1332: :
                   1333:  sp@ @ ;
                   1334: 
1.47      anton    1335: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1336: :
                   1337: [ defined? (swap) [IF] ]
                   1338:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1339: Variable (rot)
                   1340: [ELSE] ]
                   1341:     >r swap r> swap ;
                   1342: [THEN]
                   1343: 
1.47      anton    1344: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1345: :
                   1346:  rot rot ;
                   1347: 
1.47      anton    1348: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1349: :
1.6       jwilke   1350:  swap drop ;
1.1       anton    1351: 
1.47      anton    1352: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1353: :
                   1354:  swap over ;
                   1355: 
1.172     anton    1356: ?dup   ( w -- S:... w )        core    question_dupe
1.52      anton    1357: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1358: @code{dup} if w is nonzero.""
1.1       anton    1359: if (w!=0) {
                   1360:   *--sp = w;
                   1361: }
                   1362: :
                   1363:  dup IF dup THEN ;
                   1364: 
1.172     anton    1365: pick   ( S:... u -- S:... w )          core-ext
1.52      anton    1366: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.172     anton    1367: w = sp[u];
1.1       anton    1368: :
                   1369:  1+ cells sp@ + @ ;
                   1370: 
1.47      anton    1371: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1372: :
                   1373:  drop drop ;
                   1374: 
1.47      anton    1375: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1376: :
                   1377:  over over ;
                   1378: 
1.47      anton    1379: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1380: :
                   1381:  3 pick 3 pick ;
                   1382: 
1.47      anton    1383: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1384: :
                   1385:  rot >r rot r> ;
                   1386: 
1.47      anton    1387: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1388: :
                   1389:  >r >r 2swap r> r> 2swap ;
                   1390: 
1.47      anton    1391: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1392: :
                   1393:  2swap 2drop ;
                   1394: 
1.47      anton    1395: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1396: :
                   1397:  2swap 2over ;
                   1398: 
                   1399: \ toggle is high-level: 0.11/0.42%
                   1400: 
1.110     pazsan   1401: \g memory
                   1402: 
1.47      anton    1403: @      ( a_addr -- w )         core    fetch
1.52      anton    1404: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1405: w = *a_addr;
                   1406: 
1.112     pazsan   1407: \ lit@ / lit_fetch = lit @
                   1408: 
                   1409: lit@           ( #a_addr -- w ) new    lit_fetch
                   1410: w = *a_addr;
                   1411: 
1.47      anton    1412: !      ( w a_addr -- )         core    store
1.52      anton    1413: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1414: *a_addr = w;
                   1415: 
1.47      anton    1416: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1417: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1418: *a_addr += n;
                   1419: :
                   1420:  tuck @ + swap ! ;
                   1421: 
1.47      anton    1422: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1423: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1424: c = *c_addr;
                   1425: :
                   1426: [ bigendian [IF] ]
                   1427:     [ cell>bit 4 = [IF] ]
                   1428:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1429:        IF  $FF and  ELSE  8>>  THEN  ;
                   1430:     [ [ELSE] ]
                   1431:        dup [ cell 1- ] literal and
                   1432:        tuck - @ swap [ cell 1- ] literal xor
                   1433:        0 ?DO 8>> LOOP $FF and
                   1434:     [ [THEN] ]
                   1435: [ [ELSE] ]
                   1436:     [ cell>bit 4 = [IF] ]
                   1437:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1438:        IF  8>>  ELSE  $FF and  THEN
                   1439:     [ [ELSE] ]
                   1440:        dup [ cell  1- ] literal and 
                   1441:        tuck - @ swap
                   1442:        0 ?DO 8>> LOOP 255 and
                   1443:     [ [THEN] ]
                   1444: [ [THEN] ]
                   1445: ;
                   1446: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1447: 
1.47      anton    1448: c!     ( c c_addr -- )         core    c_store
1.52      anton    1449: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1450: *c_addr = c;
                   1451: :
                   1452: [ bigendian [IF] ]
                   1453:     [ cell>bit 4 = [IF] ]
                   1454:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1455:        dup -2 and @ over 1 and cells masks + @ and
                   1456:        r> or swap -2 and ! ;
                   1457:        Create masks $00FF , $FF00 ,
                   1458:     [ELSE] ]
                   1459:        dup [ cell 1- ] literal and dup 
                   1460:        [ cell 1- ] literal xor >r
                   1461:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1462:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1463:     [THEN]
                   1464: [ELSE] ]
                   1465:     [ cell>bit 4 = [IF] ]
                   1466:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1467:        dup -2 and @ over 1 and cells masks + @ and
                   1468:        r> or swap -2 and ! ;
                   1469:        Create masks $FF00 , $00FF ,
                   1470:     [ELSE] ]
                   1471:        dup [ cell 1- ] literal and dup >r
                   1472:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1473:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1474:     [THEN]
                   1475: [THEN]
                   1476: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1477: 
1.47      anton    1478: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1479: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1480: a_addr[0] = w2;
                   1481: a_addr[1] = w1;
                   1482: :
                   1483:  tuck ! cell+ ! ;
                   1484: 
1.47      anton    1485: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1486: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1487: the content of the next cell.""
1.1       anton    1488: w2 = a_addr[0];
                   1489: w1 = a_addr[1];
                   1490: :
                   1491:  dup cell+ @ swap @ ;
                   1492: 
1.47      anton    1493: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1494: ""@code{1 cells +}""
1.1       anton    1495: a_addr2 = a_addr1+1;
                   1496: :
                   1497:  cell + ;
                   1498: 
1.47      anton    1499: cells  ( n1 -- n2 )            core
1.52      anton    1500: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1501: n2 = n1 * sizeof(Cell);
                   1502: :
                   1503:  [ cell
                   1504:  2/ dup [IF] ] 2* [ [THEN]
                   1505:  2/ dup [IF] ] 2* [ [THEN]
                   1506:  2/ dup [IF] ] 2* [ [THEN]
                   1507:  2/ dup [IF] ] 2* [ [THEN]
                   1508:  drop ] ;
                   1509: 
1.47      anton    1510: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1511: ""@code{1 chars +}.""
1.1       anton    1512: c_addr2 = c_addr1 + 1;
                   1513: :
                   1514:  1+ ;
                   1515: 
1.47      anton    1516: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1517: n2 = n1 * sizeof(Char);
                   1518: :
                   1519:  ;
                   1520: 
1.47      anton    1521: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1522: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1523: counted string at @i{c-addr1}.""
1.1       anton    1524: u = *c_addr1;
                   1525: c_addr2 = c_addr1+1;
                   1526: :
                   1527:  dup 1+ swap c@ ;
                   1528: 
1.110     pazsan   1529: \g compiler
                   1530: 
1.138     pazsan   1531: \+f83headerstring
                   1532: 
                   1533: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1534: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1535:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1536:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1537:     break;
                   1538: f83name2=f83name1;
                   1539: :
                   1540:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1541:        >r 2dup r@ cell+ char+ capscomp  0=
                   1542:        IF  2drop r>  EXIT  THEN
                   1543:        r> @
                   1544:     REPEAT  THEN  nip nip ;
                   1545: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1546:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1547: : capscomp ( c_addr1 u c_addr2 -- n )
                   1548:  swap bounds
                   1549:  ?DO  dup c@ I c@ <>
                   1550:      IF  dup c@ toupper I c@ toupper =
                   1551:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1552:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1553: : sgn ( n -- -1/0/1 )
                   1554:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1555: 
                   1556: \-
                   1557: 
1.112     pazsan   1558: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1559: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1560: :
1.112     pazsan   1561:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1562:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1563:        IF  2drop r>  EXIT  THEN
                   1564:        r> @
                   1565:     REPEAT  THEN  nip nip ;
1.112     pazsan   1566: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1567:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   1568: : capscomp ( c_addr1 u c_addr2 -- n )
                   1569:  swap bounds
                   1570:  ?DO  dup c@ I c@ <>
                   1571:      IF  dup c@ toupper I c@ toupper =
                   1572:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1573:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1574: : sgn ( n -- -1/0/1 )
                   1575:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1576: 
1.15      pazsan   1577: \+hash
1.1       anton    1578: 
1.112     pazsan   1579: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1580: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1581: :
                   1582:  BEGIN  dup  WHILE
1.112     pazsan   1583:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1584:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1585:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1586:        rdrop r>
                   1587:  REPEAT nip nip ;
                   1588: 
1.112     pazsan   1589: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1590: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1591: longname2 = tablelfind(c_addr, u, a_addr);
1.1       anton    1592: :
                   1593:  BEGIN  dup  WHILE
1.112     pazsan   1594:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1595:         IF  2dup r@ cell+ cell+ -text 0=
1.1       anton    1596:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1597:        rdrop r>
                   1598:  REPEAT nip nip ;
1.138     pazsan   1599: : -text ( c_addr1 u c_addr2 -- n )
                   1600:  swap bounds
                   1601:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1602:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1603: : sgn ( n -- -1/0/1 )
                   1604:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1605: 
1.47      anton    1606: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1607: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1608: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1609: :
                   1610:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1611:  tuck - 2swap r> 0 2swap bounds
                   1612:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1613:       I c@ toupper xor
                   1614:       over and  LOOP
                   1615:  nip nip nip ;
                   1616: Create rot-values
                   1617:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1618:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1619:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1620:   7 c, 5 c, 5 c,
1.138     pazsan   1621: 
                   1622: \+
1.1       anton    1623: 
1.15      pazsan   1624: \+
1.1       anton    1625: 
1.47      anton    1626: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1627: struct Cellpair r=parse_white(c_addr1, u1);
                   1628: c_addr2 = (Char *)(r.n1);
                   1629: u2 = r.n2;
1.1       anton    1630: :
                   1631:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1632:  REPEAT  THEN  2dup
                   1633:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1634:  REPEAT  THEN  nip - ;
                   1635: 
1.47      anton    1636: aligned        ( c_addr -- a_addr )    core
1.29      crook    1637: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1638: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1639: :
                   1640:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1641: 
1.47      anton    1642: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1643: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1644: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1645: :
                   1646:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1647: 
1.35      jwilke   1648: \ threading stuff is currently only interesting if we have a compiler
                   1649: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1650: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1651: ""0 if the engine is direct threaded. Note that this may change during
                   1652: the lifetime of an image.""
                   1653: #if defined(DOUBLY_INDIRECT)
                   1654: n=2;
                   1655: #else
                   1656: # if defined(DIRECT_THREADED)
                   1657: n=0;
                   1658: # else
                   1659: n=1;
                   1660: # endif
                   1661: #endif
                   1662: :
                   1663:  1 ;
1.28      jwilke   1664: 
1.35      jwilke   1665: \f[THEN]
1.1       anton    1666: 
1.83      pazsan   1667: \g hostos
                   1668: 
1.192     anton    1669: key-file       ( wfileid -- c )                gforth  paren_key_file
1.193     anton    1670: ""Read one character @i{c} from @i{wfileid}.  This word disables
                   1671: buffering for @i{wfileid}.  If you want to read characters from a
                   1672: terminal in non-canonical (raw) mode, you have to put the terminal in
                   1673: non-canonical mode yourself (using the C interface); the exception is
                   1674: @code{stdin}: Gforth automatically puts it into non-canonical mode.""
1.17      pazsan   1675: #ifdef HAS_FILE
1.1       anton    1676: fflush(stdout);
1.192     anton    1677: c = key((FILE*)wfileid);
1.17      pazsan   1678: #else
1.192     anton    1679: c = key(stdin);
1.17      pazsan   1680: #endif
1.1       anton    1681: 
1.192     anton    1682: key?-file      ( wfileid -- f )                gforth  key_q_file
                   1683: ""@i{f} is true if at least one character can be read from @i{wfileid}
1.193     anton    1684: without blocking.  If you also want to use @code{read-file} or
                   1685: @code{read-line} on the file, you have to call @code{key?-file} or
                   1686: @code{key-file} first (these two words disable buffering).""
1.17      pazsan   1687: #ifdef HAS_FILE
1.1       anton    1688: fflush(stdout);
1.192     anton    1689: f = key_query((FILE*)wfileid);
1.17      pazsan   1690: #else
1.192     anton    1691: f = key_query(stdin);
1.17      pazsan   1692: #endif
                   1693: 
                   1694: \+os
1.12      pazsan   1695: 
1.47      anton    1696: stdin  ( -- wfileid )  gforth
1.193     anton    1697: ""The standard input file of the Gforth process.""
1.12      pazsan   1698: wfileid = (Cell)stdin;
1.1       anton    1699: 
1.47      anton    1700: stdout ( -- wfileid )  gforth
1.193     anton    1701: ""The standard output file of the Gforth process.""
1.1       anton    1702: wfileid = (Cell)stdout;
                   1703: 
1.47      anton    1704: stderr ( -- wfileid )  gforth
1.193     anton    1705: ""The standard error output file of the Gforth process.""
1.1       anton    1706: wfileid = (Cell)stderr;
                   1707: 
1.47      anton    1708: form   ( -- urows ucols )      gforth
1.1       anton    1709: ""The number of lines and columns in the terminal. These numbers may change
                   1710: with the window size.""
                   1711: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1712:  think this is necessary or always beneficial */
                   1713: urows=rows;
                   1714: ucols=cols;
                   1715: 
1.189     pazsan   1716: wcwidth        ( u -- n )      gforth
                   1717: ""The number of fixed-width characters per unicode character u""
                   1718: n = wcwidth(u);
                   1719: 
1.47      anton    1720: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1721: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1722: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1723: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1724: automatically. Caveat: @code{flush-icache} might not work on your
                   1725: installation; this is usually the case if direct threading is not
                   1726: supported on your machine (take a look at your @file{machine.h}) and
                   1727: your machine has a separate instruction cache. In such cases,
                   1728: @code{flush-icache} does nothing instead of flushing the instruction
                   1729: cache.""
                   1730: FLUSH_ICACHE(c_addr,u);
                   1731: 
1.47      anton    1732: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1733: SUPER_END;
1.1       anton    1734: return (Label *)n;
                   1735: 
1.125     anton    1736: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.155     anton    1737: wretval = gforth_system(c_addr, u);  
1.1       anton    1738: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
                   1739: 
1.47      anton    1740: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1741: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1742: is the host operating system's expansion of that environment variable. If the
1.29      crook    1743: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1744: in length.""
1.46      pazsan   1745: /* close ' to keep fontify happy */
1.190     pazsan   1746: c_addr2 = (Char *)getenv(cstr(c_addr1,u1,1));
                   1747: u2 = (c_addr2 == NULL ? 0 : strlen((char *)c_addr2));
1.1       anton    1748: 
1.56      anton    1749: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1750: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1751: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1752: 
1.47      anton    1753: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1754: wretval = pclose((FILE *)wfileid);
                   1755: wior = IOR(wretval==-1);
                   1756: 
1.47      anton    1757: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1758: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1759: Months are numbered from 1.""
1.127     anton    1760: #if 1
                   1761: time_t now;
                   1762: struct tm *ltime;
                   1763: time(&now);
                   1764: ltime=localtime(&now);
                   1765: #else
1.1       anton    1766: struct timeval time1;
                   1767: struct timezone zone1;
                   1768: struct tm *ltime;
                   1769: gettimeofday(&time1,&zone1);
1.51      anton    1770: /* !! Single Unix specification: 
                   1771:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1772: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1773: #endif
1.1       anton    1774: nyear =ltime->tm_year+1900;
                   1775: nmonth=ltime->tm_mon+1;
                   1776: nday  =ltime->tm_mday;
                   1777: nhour =ltime->tm_hour;
                   1778: nmin  =ltime->tm_min;
                   1779: nsec  =ltime->tm_sec;
                   1780: 
1.47      anton    1781: ms     ( n -- )        facility-ext
1.44      crook    1782: ""Wait at least @i{n} milli-second.""
1.1       anton    1783: struct timeval timeout;
                   1784: timeout.tv_sec=n/1000;
                   1785: timeout.tv_usec=1000*(n%1000);
                   1786: (void)select(0,0,0,0,&timeout);
                   1787: 
1.47      anton    1788: allocate       ( u -- a_addr wior )    memory
1.29      crook    1789: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1790: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1791: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1792: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1793: is a non-zero I/O result code.""
1.1       anton    1794: a_addr = (Cell *)malloc(u?u:1);
                   1795: wior = IOR(a_addr==NULL);
                   1796: 
1.47      anton    1797: free   ( a_addr -- wior )              memory
1.29      crook    1798: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1799: The region must originally have been obtained using @code{allocate} or
1.29      crook    1800: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1801: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1802: free(a_addr);
                   1803: wior = 0;
                   1804: 
1.47      anton    1805: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1806: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1807: address units, possibly moving the contents to a different
1.27      crook    1808: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1809: If the operation is successful, @i{wior} is 0.
                   1810: If the operation fails, @i{wior} is a non-zero
1.29      crook    1811: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1812: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1813: /* the following check is not necessary on most OSs, but it is needed
                   1814:    on SunOS 4.1.2. */
1.46      pazsan   1815: /* close ' to keep fontify happy */
1.1       anton    1816: if (a_addr1==NULL)
                   1817:   a_addr2 = (Cell *)malloc(u);
                   1818: else
                   1819:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1820: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1821: 
1.47      anton    1822: strerror       ( n -- c_addr u )       gforth
1.190     pazsan   1823: c_addr = (Char *)strerror(n);
                   1824: u = strlen((char *)c_addr);
1.1       anton    1825: 
1.47      anton    1826: strsignal      ( n -- c_addr u )       gforth
1.190     pazsan   1827: c_addr = (Char *)strsignal(n);
                   1828: u = strlen((char *)c_addr);
1.1       anton    1829: 
1.172     anton    1830: call-c ( ... w -- ... )        gforth  call_c
1.1       anton    1831: ""Call the C function pointed to by @i{w}. The C function has to
                   1832: access the stack itself. The stack pointers are exported in the global
                   1833: variables @code{SP} and @code{FP}.""
                   1834: /* This is a first attempt at support for calls to C. This may change in
                   1835:    the future */
1.185     pazsan   1836: gforth_FP=fp;
                   1837: gforth_SP=sp;
1.1       anton    1838: ((void (*)())w)();
1.185     pazsan   1839: sp=gforth_SP;
                   1840: fp=gforth_FP;
1.1       anton    1841: 
1.15      pazsan   1842: \+
                   1843: \+file
1.1       anton    1844: 
1.47      anton    1845: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1846: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1847: 
1.56      anton    1848: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1849: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1850: wior =  IOR(wfileid == 0);
1.1       anton    1851: 
1.56      anton    1852: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1853: Cell   fd;
1.56      anton    1854: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1855: if (fd != -1) {
1.56      anton    1856:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1857:   wior = IOR(wfileid == 0);
1.1       anton    1858: } else {
1.22      crook    1859:   wfileid = 0;
1.1       anton    1860:   wior = IOR(1);
                   1861: }
                   1862: 
1.47      anton    1863: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1864: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1865: 
1.47      anton    1866: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1867: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1868: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1869: 
1.47      anton    1870: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1871: /* !! use tell and lseek? */
1.108     anton    1872: ud = OFF2UD(ftello((FILE *)wfileid));
                   1873: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1874: 
1.47      anton    1875: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1876: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1877: 
1.47      anton    1878: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1879: struct stat buf;
                   1880: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1881: ud = OFF2UD(buf.st_size);
1.1       anton    1882: 
1.47      anton    1883: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1884: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1885: 
1.47      anton    1886: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1887: /* !! fread does not guarantee enough */
                   1888: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1889: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1890: /* !! is the value of ferror errno-compatible? */
                   1891: if (wior)
                   1892:   clearerr((FILE *)wfileid);
                   1893: 
1.125     anton    1894: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1895: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1896: u2   = r.n1;
                   1897: flag = r.n2;
                   1898: u3   = r.n3;
                   1899: wior = r.n4;
1.1       anton    1900: 
1.15      pazsan   1901: \+
1.1       anton    1902: 
1.47      anton    1903: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1904: /* !! fwrite does not guarantee enough */
1.39      pazsan   1905: #ifdef HAS_FILE
1.1       anton    1906: {
                   1907:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1908:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1909:   if (wior)
                   1910:     clearerr((FILE *)wfileid);
                   1911: }
1.39      pazsan   1912: #else
                   1913: TYPE(c_addr, u1);
                   1914: #endif
1.17      pazsan   1915: 
1.47      anton    1916: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1917: #ifdef HAS_FILE
1.1       anton    1918: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1919: if (wior)
                   1920:   clearerr((FILE *)wfileid);
1.17      pazsan   1921: #else
1.36      pazsan   1922: PUTC(c);
1.17      pazsan   1923: #endif
1.1       anton    1924: 
1.15      pazsan   1925: \+file
1.1       anton    1926: 
1.47      anton    1927: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1928: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1929: 
1.56      anton    1930: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1931: struct Cellpair r = file_status(c_addr, u);
                   1932: wfam = r.n1;
                   1933: wior = r.n2;
1.1       anton    1934: 
1.112     pazsan   1935: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1936: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1937: 
1.112     pazsan   1938: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1939: ""Open the directory specified by @i{c-addr, u}
                   1940: and return @i{dir-id} for futher access to it.""
                   1941: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1942: wior =  IOR(wdirid == 0);
                   1943: 
                   1944: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1945: ""Attempt to read the next entry from the directory specified
                   1946: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1947: If the attempt fails because there is no more entries,
                   1948: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1949: If the attempt to read the next entry fails because of any other reason, 
                   1950: return @i{ior}<>0.
                   1951: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1952: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1953: If the length of the file name is greater than @i{u1}, 
                   1954: store first @i{u1} characters from file name into the buffer and
                   1955: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1956: struct dirent * dent;
                   1957: dent = readdir((DIR *)wdirid);
                   1958: wior = 0;
                   1959: flag = -1;
                   1960: if(dent == NULL) {
                   1961:   u2 = 0;
                   1962:   flag = 0;
                   1963: } else {
1.190     pazsan   1964:   u2 = strlen((char *)dent->d_name);
1.112     pazsan   1965:   if(u2 > u1) {
                   1966:     u2 = u1;
                   1967:     wior = -512-ENAMETOOLONG;
                   1968:   }
                   1969:   memmove(c_addr, dent->d_name, u2);
                   1970: }
                   1971: 
                   1972: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1973: ""Close the directory specified by @i{dir-id}.""
                   1974: wior = IOR(closedir((DIR *)wdirid));
                   1975: 
                   1976: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1977: char * string = cstr(c_addr1, u1, 1);
                   1978: char * pattern = cstr(c_addr2, u2, 0);
                   1979: flag = FLAG(!fnmatch(pattern, string, 0));
                   1980: 
1.157     pazsan   1981: set-dir        ( c_addr u -- wior )    gforth set_dir
                   1982: ""Change the current directory to @i{c-addr, u}.
                   1983: Return an error if this is not possible""
                   1984: wior = IOR(chdir(tilde_cstr(c_addr, u, 1)));
                   1985: 
                   1986: get-dir        ( c_addr1 u1 -- c_addr2 u2 )    gforth get_dir
                   1987: ""Store the current directory in the buffer specified by @{c-addr1, u1}.
                   1988: If the buffer size is not sufficient, return 0 0""
1.190     pazsan   1989: c_addr2 = (Char *)getcwd((char *)c_addr1, u1);
1.157     pazsan   1990: if(c_addr2 != NULL) {
1.190     pazsan   1991:   u2 = strlen((char *)c_addr2);
1.157     pazsan   1992: } else {
                   1993:   u2 = 0;
                   1994: }
                   1995: 
1.112     pazsan   1996: \+
                   1997: 
                   1998: newline        ( -- c_addr u ) gforth
                   1999: ""String containing the newline sequence of the host OS""
                   2000: char newline[] = {
1.115     anton    2001: #if DIRSEP=='/'
                   2002: /* Unix */
1.112     pazsan   2003: '\n'
                   2004: #else
1.115     anton    2005: /* DOS, Win, OS/2 */
1.112     pazsan   2006: '\r','\n'
                   2007: #endif
                   2008: };
1.190     pazsan   2009: c_addr=(Char *)newline;
1.112     pazsan   2010: u=sizeof(newline);
                   2011: :
                   2012:  "newline count ;
                   2013: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   2014: 
                   2015: \+os
                   2016: 
                   2017: utime  ( -- dtime )    gforth
                   2018: ""Report the current time in microseconds since some epoch.""
                   2019: struct timeval time1;
                   2020: gettimeofday(&time1,NULL);
                   2021: dtime = timeval2us(&time1);
                   2022: 
                   2023: cputime ( -- duser dsystem ) gforth
                   2024: ""duser and dsystem are the respective user- and system-level CPU
                   2025: times used since the start of the Forth system (excluding child
                   2026: processes), in microseconds (the granularity may be much larger,
                   2027: however).  On platforms without the getrusage call, it reports elapsed
                   2028: time (since some epoch) for duser and 0 for dsystem.""
                   2029: #ifdef HAVE_GETRUSAGE
                   2030: struct rusage usage;
                   2031: getrusage(RUSAGE_SELF, &usage);
                   2032: duser = timeval2us(&usage.ru_utime);
                   2033: dsystem = timeval2us(&usage.ru_stime);
                   2034: #else
                   2035: struct timeval time1;
                   2036: gettimeofday(&time1,NULL);
                   2037: duser = timeval2us(&time1);
1.158     pazsan   2038: dsystem = DZERO;
1.112     pazsan   2039: #endif
                   2040: 
                   2041: \+
                   2042: 
                   2043: \+floating
                   2044: 
                   2045: \g floating
1.83      pazsan   2046: 
1.1       anton    2047: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   2048: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   2049: 
1.177     pazsan   2050: s>f    ( n -- r )              float   s_to_f
                   2051: r = n;
                   2052: 
1.47      anton    2053: d>f    ( d -- r )              float   d_to_f
1.158     pazsan   2054: #ifdef BUGGY_LL_D2F
1.1       anton    2055: extern double ldexp(double x, int exp);
1.158     pazsan   2056: if (DHI(d)<0) {
                   2057: #ifdef BUGGY_LL_ADD
1.113     anton    2058:   DCell d2=dnegate(d);
1.158     pazsan   2059: #else
                   2060:   DCell d2=-d;
                   2061: #endif
                   2062:   r = -(ldexp((Float)DHI(d2),CELL_BITS) + (Float)DLO(d2));
1.113     anton    2063: } else
1.158     pazsan   2064:   r = ldexp((Float)DHI(d),CELL_BITS) + (Float)DLO(d);
1.1       anton    2065: #else
                   2066: r = d;
                   2067: #endif
                   2068: 
1.47      anton    2069: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   2070: extern DCell double2ll(Float r);
                   2071: d = double2ll(r);
1.1       anton    2072: 
1.177     pazsan   2073: f>s    ( r -- n )              float   f_to_s
                   2074: n = (Cell)r;
                   2075: 
1.47      anton    2076: f!     ( r f_addr -- ) float   f_store
1.52      anton    2077: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    2078: *f_addr = r;
                   2079: 
1.47      anton    2080: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    2081: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    2082: r = *f_addr;
                   2083: 
1.47      anton    2084: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    2085: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    2086: #ifdef IEEE_FP
                   2087: r = *df_addr;
                   2088: #else
                   2089: !! df@
                   2090: #endif
                   2091: 
1.47      anton    2092: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    2093: ""Store @i{r} as double-precision IEEE floating-point value to the
                   2094: address @i{df-addr}.""
1.1       anton    2095: #ifdef IEEE_FP
                   2096: *df_addr = r;
                   2097: #else
                   2098: !! df!
                   2099: #endif
                   2100: 
1.47      anton    2101: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    2102: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    2103: #ifdef IEEE_FP
                   2104: r = *sf_addr;
                   2105: #else
                   2106: !! sf@
                   2107: #endif
                   2108: 
1.47      anton    2109: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    2110: ""Store @i{r} as single-precision IEEE floating-point value to the
                   2111: address @i{sf-addr}.""
1.1       anton    2112: #ifdef IEEE_FP
                   2113: *sf_addr = r;
                   2114: #else
                   2115: !! sf!
                   2116: #endif
                   2117: 
1.47      anton    2118: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    2119: r3 = r1+r2;
                   2120: 
1.47      anton    2121: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    2122: r3 = r1-r2;
                   2123: 
1.47      anton    2124: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    2125: r3 = r1*r2;
                   2126: 
1.47      anton    2127: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    2128: r3 = r1/r2;
                   2129: 
1.47      anton    2130: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    2131: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    2132: r3 = pow(r1,r2);
1.177     pazsan   2133: 
                   2134: fm*    ( r1 n -- r2 )  gforth  fm_star
                   2135: r2 = r1*n;
                   2136: 
                   2137: fm/    ( r1 n -- r2 )  gforth  fm_slash
                   2138: r2 = r1/n;
                   2139: 
                   2140: fm*/   ( r1 n1 n2 -- r2 )      gforth  fm_star_slash
                   2141: r2 = (r1*n1)/n2;
                   2142: 
                   2143: f**2   ( r1 -- r2 )    gforth  fm_square
                   2144: r2 = r1*r1;
1.1       anton    2145: 
1.47      anton    2146: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    2147: r2 = - r1;
                   2148: 
1.47      anton    2149: fdrop  ( r -- )                float   f_drop
1.1       anton    2150: 
1.47      anton    2151: fdup   ( r -- r r )    float   f_dupe
1.1       anton    2152: 
1.47      anton    2153: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    2154: 
1.47      anton    2155: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    2156: 
1.47      anton    2157: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    2158: 
1.47      anton    2159: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    2160: 
1.47      anton    2161: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    2162: 
1.47      anton    2163: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    2164: ""@code{1 floats +}.""
1.1       anton    2165: f_addr2 = f_addr1+1;
                   2166: 
1.47      anton    2167: floats ( n1 -- n2 )    float
1.52      anton    2168: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    2169: n2 = n1*sizeof(Float);
                   2170: 
1.47      anton    2171: floor  ( r1 -- r2 )    float
1.26      crook    2172: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    2173: /* !! unclear wording */
                   2174: r2 = floor(r1);
                   2175: 
1.105     anton    2176: fround ( r1 -- r2 )    gforth  f_round
                   2177: ""Round to the nearest integral value.""
1.1       anton    2178: r2 = rint(r1);
                   2179: 
1.47      anton    2180: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    2181: if (r1<r2)
                   2182:   r3 = r2;
                   2183: else
                   2184:   r3 = r1;
                   2185: 
1.47      anton    2186: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    2187: if (r1<r2)
                   2188:   r3 = r1;
                   2189: else
                   2190:   r3 = r2;
                   2191: 
1.47      anton    2192: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    2193: char *sig;
1.122     anton    2194: size_t siglen;
1.1       anton    2195: int flag;
                   2196: int decpt;
                   2197: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    2198: n=(r==0. ? 1 : decpt);
1.1       anton    2199: f1=FLAG(flag!=0);
1.21      anton    2200: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.190     pazsan   2201: siglen=strlen((char *)sig);
1.124     anton    2202: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2203:   siglen=u;
1.170     anton    2204: if (!f2) /* workaround Cygwin trailing 0s for Inf and Nan */
                   2205:   for (; sig[siglen-1]=='0'; siglen--);
                   2206:     ;
1.122     anton    2207: memcpy(c_addr,sig,siglen);
1.123     anton    2208: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2209: 
1.172     anton    2210: >float ( c_addr u -- f:... flag )      float   to_float
1.56      anton    2211: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2212: character string @i{c-addr u} to internal floating-point
                   2213: representation. If the string represents a valid floating-point number
                   2214: @i{r} is placed on the floating-point stack and @i{flag} is
                   2215: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2216: case and represents the floating-point number 0.""
1.1       anton    2217: Float r;
1.125     anton    2218: flag = to_float(c_addr, u, &r);
                   2219: if (flag) {
1.172     anton    2220:   fp--;
                   2221:   fp[0]=r;
1.1       anton    2222: }
                   2223: 
1.47      anton    2224: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2225: r2 = fabs(r1);
                   2226: 
1.47      anton    2227: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2228: r2 = acos(r1);
                   2229: 
1.47      anton    2230: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2231: r2 = asin(r1);
                   2232: 
1.47      anton    2233: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2234: r2 = atan(r1);
                   2235: 
1.47      anton    2236: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2237: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2238: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2239: r3 = atan2(r1,r2);
                   2240: 
1.47      anton    2241: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2242: r2 = cos(r1);
                   2243: 
1.47      anton    2244: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2245: r2 = exp(r1);
                   2246: 
1.47      anton    2247: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2248: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2249: #ifdef HAVE_EXPM1
1.3       pazsan   2250: extern double
                   2251: #ifdef NeXT
                   2252:               const
                   2253: #endif
                   2254:                     expm1(double);
1.1       anton    2255: r2 = expm1(r1);
                   2256: #else
                   2257: r2 = exp(r1)-1.;
                   2258: #endif
                   2259: 
1.47      anton    2260: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2261: r2 = log(r1);
                   2262: 
1.47      anton    2263: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2264: ""@i{r2}=ln(@i{r1}+1)""
                   2265: #ifdef HAVE_LOG1P
1.3       pazsan   2266: extern double
                   2267: #ifdef NeXT
                   2268:               const
                   2269: #endif
                   2270:                     log1p(double);
1.1       anton    2271: r2 = log1p(r1);
                   2272: #else
                   2273: r2 = log(r1+1.);
                   2274: #endif
                   2275: 
1.47      anton    2276: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2277: ""The decimal logarithm.""
1.1       anton    2278: r2 = log10(r1);
                   2279: 
1.47      anton    2280: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2281: ""@i{r2}=10**@i{r1}""
                   2282: extern double pow10(double);
                   2283: r2 = pow10(r1);
                   2284: 
1.47      anton    2285: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2286: r2 = sin(r1);
                   2287: 
1.47      anton    2288: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2289: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2290: r2 = sin(r1);
                   2291: r3 = cos(r1);
                   2292: 
1.47      anton    2293: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2294: r2 = sqrt(r1);
                   2295: 
1.47      anton    2296: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2297: r2 = tan(r1);
                   2298: :
                   2299:  fsincos f/ ;
                   2300: 
1.47      anton    2301: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2302: r2 = sinh(r1);
                   2303: :
                   2304:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2305: 
1.47      anton    2306: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2307: r2 = cosh(r1);
                   2308: :
                   2309:  fexp fdup 1/f f+ f2/ ;
                   2310: 
1.47      anton    2311: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2312: r2 = tanh(r1);
                   2313: :
                   2314:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2315: 
1.47      anton    2316: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2317: r2 = asinh(r1);
                   2318: :
                   2319:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2320: 
1.47      anton    2321: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2322: r2 = acosh(r1);
                   2323: :
                   2324:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2325: 
1.47      anton    2326: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2327: r2 = atanh(r1);
                   2328: :
                   2329:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2330:  r> IF  fnegate  THEN ;
                   2331: 
1.47      anton    2332: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2333: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2334: single-precision IEEE floating-point numbers.""
1.1       anton    2335: n2 = n1*sizeof(SFloat);
                   2336: 
1.47      anton    2337: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2338: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2339: double-precision IEEE floating-point numbers.""
1.1       anton    2340: n2 = n1*sizeof(DFloat);
                   2341: 
1.47      anton    2342: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2343: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2344: than or equal to @i{c-addr}.""
1.1       anton    2345: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2346: :
                   2347:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2348: 
1.47      anton    2349: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2350: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2351: than or equal to @i{c-addr}.""
1.1       anton    2352: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2353: :
                   2354:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2355: 
1.112     pazsan   2356: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2357: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2358: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2359: ucount elements.""
1.125     anton    2360: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2361: :
                   2362:  >r swap 2swap swap 0e r> 0 ?DO
                   2363:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2364:  LOOP 2drop 2drop ; 
                   2365: 
                   2366: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2367: ""vy=ra*vx+vy""
1.125     anton    2368: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2369: :
                   2370:  >r swap 2swap swap r> 0 ?DO
                   2371:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2372:  LOOP 2drop 2drop fdrop ;
                   2373: 
                   2374: \+
                   2375: 
1.1       anton    2376: \ The following words access machine/OS/installation-dependent
                   2377: \   Gforth internals
                   2378: \ !! how about environmental queries DIRECT-THREADED,
                   2379: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2380: 
                   2381: \ local variable implementation primitives
1.112     pazsan   2382: 
1.15      pazsan   2383: \+glocals
1.1       anton    2384: 
1.110     pazsan   2385: \g locals
                   2386: 
1.68      anton    2387: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2388: w = *(Cell *)(lp+noffset);
1.1       anton    2389: 
1.47      anton    2390: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2391: w = ((Cell *)lp)[0];
1.1       anton    2392: 
1.47      anton    2393: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2394: w = ((Cell *)lp)[1];
1.1       anton    2395: 
1.47      anton    2396: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2397: w = ((Cell *)lp)[2];
1.1       anton    2398: 
1.47      anton    2399: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2400: w = ((Cell *)lp)[3];
1.1       anton    2401: 
1.15      pazsan   2402: \+floating
1.1       anton    2403: 
1.68      anton    2404: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2405: r = *(Float *)(lp+noffset);
1.1       anton    2406: 
1.47      anton    2407: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2408: r = ((Float *)lp)[0];
1.1       anton    2409: 
1.47      anton    2410: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2411: r = ((Float *)lp)[1];
1.1       anton    2412: 
1.15      pazsan   2413: \+
1.1       anton    2414: 
1.68      anton    2415: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2416: /* this can also be used to implement lp@ */
1.68      anton    2417: c_addr = (Char *)(lp+noffset);
1.1       anton    2418: 
1.68      anton    2419: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2420: ""used with negative immediate values it allocates memory on the
                   2421: local stack, a positive immediate argument drops memory from the local
                   2422: stack""
1.68      anton    2423: lp += noffset;
1.1       anton    2424: 
1.47      anton    2425: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2426: lp += -sizeof(Cell);
                   2427: 
1.47      anton    2428: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2429: lp += sizeof(Float);
                   2430: 
1.47      anton    2431: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2432: lp += 2*sizeof(Float);
                   2433: 
1.47      anton    2434: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2435: lp = (Address)c_addr;
                   2436: 
1.47      anton    2437: >l     ( w -- )        gforth  to_l
1.1       anton    2438: lp -= sizeof(Cell);
                   2439: *(Cell *)lp = w;
                   2440: 
1.15      pazsan   2441: \+floating
1.1       anton    2442: 
1.47      anton    2443: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2444: lp -= sizeof(Float);
                   2445: *(Float *)lp = r;
                   2446: 
1.172     anton    2447: fpick  ( f:... u -- f:... r )          gforth
1.52      anton    2448: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.172     anton    2449: r = fp[u];
1.11      anton    2450: :
                   2451:  floats fp@ + f@ ;
                   2452: 
1.15      pazsan   2453: \+
                   2454: \+
1.1       anton    2455: 
1.15      pazsan   2456: \+OS
1.1       anton    2457: 
1.110     pazsan   2458: \g syslib
                   2459: 
1.131     pazsan   2460: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2461: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2462: #ifndef RTLD_GLOBAL
                   2463: #define RTLD_GLOBAL 0
                   2464: #endif
                   2465: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2466: #else
                   2467: #  ifdef _WIN32
                   2468: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2469: #  else
                   2470: #warning Define open-lib!
                   2471: u2 = 0;
                   2472: #  endif
                   2473: #endif
                   2474: 
                   2475: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2476: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2477: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2478: #else
                   2479: #  ifdef _WIN32
                   2480: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2481: #  else
                   2482: #warning Define lib-sym!
                   2483: u3 = 0;
                   2484: #  endif
                   2485: #endif
                   2486: 
1.172     anton    2487: wcall  ( ... u -- ... )        gforth
1.185     pazsan   2488: gforth_FP=fp;
                   2489: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &gforth_FP);
                   2490: fp=gforth_FP;
1.142     pazsan   2491: 
1.186     anton    2492: uw@ ( c_addr -- u )    gforth u_w_fetch
                   2493: ""@i{u} is the zero-extended 16-bit value stored at @i{c_addr}.""
                   2494: u = *(UWyde*)(c_addr);
1.180     pazsan   2495: 
1.186     anton    2496: sw@ ( c_addr -- n )    gforth s_w_fetch
                   2497: ""@i{n} is the sign-extended 16-bit value stored at @i{c_addr}.""
                   2498: n = *(Wyde*)(c_addr);
1.180     pazsan   2499: 
1.186     anton    2500: w! ( w c_addr -- )     gforth w_store
                   2501: ""Store the bottom 16 bits of @i{w} at @i{c_addr}.""
                   2502: *(Wyde*)(c_addr) = w;
1.180     pazsan   2503: 
1.186     anton    2504: ul@ ( c_addr -- u )    gforth u_l_fetch
                   2505: ""@i{u} is the zero-extended 32-bit value stored at @i{c_addr}.""
                   2506: u = *(UTetrabyte*)(c_addr);
1.181     pazsan   2507: 
1.186     anton    2508: sl@ ( c_addr -- n )    gforth s_l_fetch
                   2509: ""@i{n} is the sign-extended 32-bit value stored at @i{c_addr}.""
                   2510: n = *(Tetrabyte*)(c_addr);
1.181     pazsan   2511: 
1.186     anton    2512: l! ( w c_addr -- )     gforth l_store
                   2513: ""Store the bottom 32 bits of @i{w} at @i{c_addr}.""
                   2514: *(Tetrabyte*)(c_addr) = w;
1.180     pazsan   2515: 
1.131     pazsan   2516: \+FFCALL
                   2517: 
1.136     pazsan   2518: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2519: av_start_void(alist, c_addr);
                   2520: 
1.136     pazsan   2521: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2522: av_start_int(alist, c_addr, &irv);
                   2523: 
1.136     pazsan   2524: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2525: av_start_float(alist, c_addr, &frv);
                   2526: 
1.136     pazsan   2527: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2528: av_start_double(alist, c_addr, &drv);
                   2529: 
1.136     pazsan   2530: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2531: av_start_longlong(alist, c_addr, &llrv);
                   2532: 
1.136     pazsan   2533: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2534: av_start_ptr(alist, c_addr, void*, &prv);
                   2535: 
                   2536: av-int  ( w -- )  gforth  av_int
                   2537: av_int(alist, w);
                   2538: 
1.136     pazsan   2539: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2540: av_float(alist, r);
                   2541: 
1.136     pazsan   2542: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2543: av_double(alist, r);
                   2544: 
1.136     pazsan   2545: av-longlong    ( d -- )        gforth  av_longlong
1.158     pazsan   2546: #ifdef BUGGY_LL_SIZE
                   2547: av_longlong(alist, DLO(d));
1.151     pazsan   2548: #else
1.131     pazsan   2549: av_longlong(alist, d);
1.151     pazsan   2550: #endif
1.131     pazsan   2551: 
1.136     pazsan   2552: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2553: av_ptr(alist, void*, c_addr);
                   2554: 
1.136     pazsan   2555: av-int-r  ( R:w -- )  gforth  av_int_r
                   2556: av_int(alist, w);
                   2557: 
                   2558: av-float-r     ( -- )  gforth  av_float_r
                   2559: float r = *(Float*)lp;
                   2560: lp += sizeof(Float);
                   2561: av_float(alist, r);
                   2562: 
                   2563: av-double-r    ( -- )  gforth  av_double_r
                   2564: double r = *(Float*)lp;
                   2565: lp += sizeof(Float);
                   2566: av_double(alist, r);
                   2567: 
                   2568: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
1.158     pazsan   2569: #ifdef BUGGY_LL_SIZE
                   2570: av_longlong(alist, DLO(d));
1.151     pazsan   2571: #else
1.136     pazsan   2572: av_longlong(alist, d);
1.151     pazsan   2573: #endif
1.136     pazsan   2574: 
                   2575: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2576: av_ptr(alist, void*, c_addr);
                   2577: 
1.173     anton    2578: av-call-void   ( ... -- ... )  gforth  av_call_void
1.131     pazsan   2579: SAVE_REGS
                   2580: av_call(alist);
                   2581: REST_REGS
                   2582: 
1.173     anton    2583: av-call-int    ( ... -- ... w )        gforth  av_call_int
1.131     pazsan   2584: SAVE_REGS
                   2585: av_call(alist);
1.134     pazsan   2586: REST_REGS
1.131     pazsan   2587: w = irv;
                   2588: 
1.173     anton    2589: av-call-float  ( ... -- ... r )        gforth  av_call_float
1.131     pazsan   2590: SAVE_REGS
                   2591: av_call(alist);
                   2592: REST_REGS
                   2593: r = frv;
                   2594: 
1.173     anton    2595: av-call-double ( ... -- ... r )        gforth  av_call_double
1.131     pazsan   2596: SAVE_REGS
                   2597: av_call(alist);
                   2598: REST_REGS
                   2599: r = drv;
                   2600: 
1.173     anton    2601: av-call-longlong       ( ... -- ... d )        gforth  av_call_longlong
1.131     pazsan   2602: SAVE_REGS
                   2603: av_call(alist);
                   2604: REST_REGS
1.151     pazsan   2605: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2606: DLO_IS(d, llrv);
                   2607: DHI_IS(d, 0);
1.152     pazsan   2608: #else
                   2609: d = llrv;
1.151     pazsan   2610: #endif
1.131     pazsan   2611: 
1.173     anton    2612: av-call-ptr    ( ... -- ... c_addr )   gforth  av_call_ptr
1.131     pazsan   2613: SAVE_REGS
                   2614: av_call(alist);
                   2615: REST_REGS
                   2616: c_addr = prv;
                   2617: 
1.135     pazsan   2618: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
1.185     pazsan   2619: c_addr = (char *)alloc_callback(gforth_callback, (Xt *)a_ip);
1.131     pazsan   2620: 
1.135     pazsan   2621: va-start-void  ( -- )  gforth  va_start_void
1.191     pazsan   2622: va_start_void(gforth_clist);
1.131     pazsan   2623: 
1.135     pazsan   2624: va-start-int   ( -- )  gforth  va_start_int
1.191     pazsan   2625: va_start_int(gforth_clist);
1.131     pazsan   2626: 
1.135     pazsan   2627: va-start-longlong      ( -- )  gforth  va_start_longlong
1.191     pazsan   2628: va_start_longlong(gforth_clist);
1.131     pazsan   2629: 
1.135     pazsan   2630: va-start-ptr   ( -- )  gforth  va_start_ptr
1.191     pazsan   2631: va_start_ptr(gforth_clist, (char *));
1.131     pazsan   2632: 
1.135     pazsan   2633: va-start-float ( -- )  gforth  va_start_float
1.191     pazsan   2634: va_start_float(gforth_clist);
1.135     pazsan   2635: 
                   2636: va-start-double        ( -- )  gforth  va_start_double
1.191     pazsan   2637: va_start_double(gforth_clist);
1.135     pazsan   2638: 
                   2639: va-arg-int     ( -- w )        gforth  va_arg_int
1.191     pazsan   2640: w = va_arg_int(gforth_clist);
1.135     pazsan   2641: 
                   2642: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
1.151     pazsan   2643: #ifdef BUGGY_LONG_LONG
1.191     pazsan   2644: DLO_IS(d, va_arg_longlong(gforth_clist));
1.158     pazsan   2645: DHI_IS(d, 0);
1.151     pazsan   2646: #else
1.191     pazsan   2647: d = va_arg_longlong(gforth_clist);
1.151     pazsan   2648: #endif
1.135     pazsan   2649: 
                   2650: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
1.191     pazsan   2651: c_addr = (char *)va_arg_ptr(gforth_clist,char*);
1.135     pazsan   2652: 
                   2653: va-arg-float   ( -- r )        gforth  va_arg_float
1.191     pazsan   2654: r = va_arg_float(gforth_clist);
1.135     pazsan   2655: 
                   2656: va-arg-double  ( -- r )        gforth  va_arg_double
1.191     pazsan   2657: r = va_arg_double(gforth_clist);
1.131     pazsan   2658: 
                   2659: va-return-void ( -- )  gforth va_return_void
1.191     pazsan   2660: va_return_void(gforth_clist);
1.131     pazsan   2661: return 0;
                   2662: 
                   2663: va-return-int ( w -- ) gforth va_return_int
1.191     pazsan   2664: va_return_int(gforth_clist, w);
1.131     pazsan   2665: return 0;
                   2666: 
                   2667: va-return-ptr ( c_addr -- )    gforth va_return_ptr
1.191     pazsan   2668: va_return_ptr(gforth_clist, void *, c_addr);
1.131     pazsan   2669: return 0;
                   2670: 
                   2671: va-return-longlong ( d -- )    gforth va_return_longlong
1.151     pazsan   2672: #ifdef BUGGY_LONG_LONG
1.191     pazsan   2673: va_return_longlong(gforth_clist, d.lo);
1.151     pazsan   2674: #else
1.191     pazsan   2675: va_return_longlong(gforth_clist, d);
1.151     pazsan   2676: #endif
1.131     pazsan   2677: return 0;
                   2678: 
                   2679: va-return-float ( r -- )       gforth va_return_float
1.191     pazsan   2680: va_return_float(gforth_clist, r);
1.131     pazsan   2681: return 0;
                   2682: 
                   2683: va-return-double ( r -- )      gforth va_return_double
1.191     pazsan   2684: va_return_double(gforth_clist, r);
1.131     pazsan   2685: return 0;
                   2686: 
1.142     pazsan   2687: \+
                   2688: 
1.175     pazsan   2689: \+LIBFFI
                   2690: 
                   2691: ffi-type ( n -- a_type )       gforth ffi_type
                   2692: static void* ffi_types[] =
                   2693:     { &ffi_type_void,
                   2694:       &ffi_type_uint8, &ffi_type_sint8,
                   2695:       &ffi_type_uint16, &ffi_type_sint16,
                   2696:       &ffi_type_uint32, &ffi_type_sint32,
                   2697:       &ffi_type_uint64, &ffi_type_sint64,
                   2698:       &ffi_type_float, &ffi_type_double, &ffi_type_longdouble,
                   2699:       &ffi_type_pointer };
                   2700: a_type = ffi_types[n];
                   2701: 
                   2702: ffi-size ( n1 -- n2 )  gforth ffi_size
                   2703: static int ffi_sizes[] =
                   2704:     { sizeof(ffi_cif), sizeof(ffi_closure) };
                   2705: n2 = ffi_sizes[n1];
                   2706: 
                   2707: ffi-prep-cif ( a_atypes n a_rtype a_cif -- w ) gforth ffi_prep_cif
1.190     pazsan   2708: w = ffi_prep_cif((ffi_cif *)a_cif, FFI_DEFAULT_ABI, n,
                   2709:         (ffi_type *)a_rtype, (ffi_type **)a_atypes);
1.175     pazsan   2710: 
                   2711: ffi-call ( a_avalues a_rvalue a_ip a_cif -- )  gforth ffi_call
1.183     pazsan   2712: SAVE_REGS
1.190     pazsan   2713: ffi_call((ffi_cif *)a_cif, (void(*)())a_ip, (void *)a_rvalue, (void **)a_avalues);
1.183     pazsan   2714: REST_REGS
1.175     pazsan   2715: 
                   2716: ffi-prep-closure ( a_ip a_cif a_closure -- w ) gforth ffi_prep_closure
1.190     pazsan   2717: w = ffi_prep_closure((ffi_closure *)a_closure, (ffi_cif *)a_cif, gforth_callback, (void *)a_ip);
1.178     pazsan   2718: 
1.175     pazsan   2719: ffi-2@ ( a_addr -- d ) gforth ffi_2fetch
                   2720: #ifdef BUGGY_LONG_LONG
1.195     pazsan   2721: DLO_IS(d, *(Cell*)(*a_addr));
1.175     pazsan   2722: DHI_IS(d, 0);
                   2723: #else
1.179     pazsan   2724: d = *(DCell*)(a_addr);
1.175     pazsan   2725: #endif
                   2726: 
                   2727: ffi-2! ( d a_addr -- ) gforth ffi_2store
                   2728: #ifdef BUGGY_LONG_LONG
                   2729: *(Cell*)(a_addr) = DLO(d);
                   2730: #else
                   2731: *(DCell*)(a_addr) = d;
                   2732: #endif
                   2733: 
                   2734: ffi-arg-int ( -- w )   gforth ffi_arg_int
1.191     pazsan   2735: w = *(int *)(*gforth_clist++);
1.175     pazsan   2736: 
1.194     pazsan   2737: ffi-arg-long ( -- w )  gforth ffi_arg_long
                   2738: w = *(long *)(*gforth_clist++);
                   2739: 
1.175     pazsan   2740: ffi-arg-longlong ( -- d )      gforth ffi_arg_longlong
                   2741: #ifdef BUGGY_LONG_LONG
1.195     pazsan   2742: DLO_IS(d, *(Cell*)(*gforth_clist++));
                   2743: DHI_IS(d, -(*(Cell*)(*gforth_clist++)<0));
1.175     pazsan   2744: #else
1.191     pazsan   2745: d = *(DCell*)(*gforth_clist++);
1.175     pazsan   2746: #endif
                   2747: 
1.194     pazsan   2748: ffi-arg-dlong ( -- d ) gforth ffi_arg_dlong
                   2749: #ifdef BUGGY_LONG_LONG
1.195     pazsan   2750: DLO_IS(d, *(Cell*)(*gforth_clist++));
                   2751: DHI_IS(d, -(*(Cell*)(*gforth_clist++)<0));
1.194     pazsan   2752: #else
                   2753: d = *(Cell*)(*gforth_clist++);
                   2754: #endif
                   2755: 
1.175     pazsan   2756: ffi-arg-ptr ( -- c_addr )      gforth ffi_arg_ptr
1.191     pazsan   2757: c_addr = *(Char **)(*gforth_clist++);
1.175     pazsan   2758: 
                   2759: ffi-arg-float ( -- r ) gforth ffi_arg_float
1.191     pazsan   2760: r = *(float*)(*gforth_clist++);
1.175     pazsan   2761: 
                   2762: ffi-arg-double ( -- r )        gforth ffi_arg_double
1.191     pazsan   2763: r = *(double*)(*gforth_clist++);
1.175     pazsan   2764: 
1.178     pazsan   2765: ffi-ret-void ( -- )    gforth ffi_ret_void
                   2766: return 0;
                   2767: 
                   2768: ffi-ret-int ( w -- )   gforth ffi_ret_int
1.191     pazsan   2769: *(int*)(gforth_ritem) = w;
1.178     pazsan   2770: return 0;
1.175     pazsan   2771: 
1.178     pazsan   2772: ffi-ret-longlong ( d -- )      gforth ffi_ret_longlong
1.175     pazsan   2773: #ifdef BUGGY_LONG_LONG
1.191     pazsan   2774: *(Cell*)(gforth_ritem) = DLO(d);
1.175     pazsan   2775: #else
1.191     pazsan   2776: *(DCell*)(gforth_ritem) = d;
1.194     pazsan   2777: #endif
                   2778: return 0;
                   2779: 
                   2780: ffi-ret-dlong ( d -- ) gforth ffi_ret_dlong
                   2781: #ifdef BUGGY_LONG_LONG
                   2782: *(Cell*)(gforth_ritem) = DLO(d);
                   2783: #else
                   2784: *(Cell*)(gforth_ritem) = d;
                   2785: #endif
                   2786: return 0;
                   2787: 
                   2788: ffi-ret-long ( n -- )  gforth ffi_ret_long
                   2789: *(Cell*)(gforth_ritem) = n;
1.178     pazsan   2790: return 0;
1.175     pazsan   2791: 
1.178     pazsan   2792: ffi-ret-ptr ( c_addr -- )      gforth ffi_ret_ptr
1.191     pazsan   2793: *(Char **)(gforth_ritem) = c_addr;
1.178     pazsan   2794: return 0;
1.175     pazsan   2795: 
1.178     pazsan   2796: ffi-ret-float ( r -- ) gforth ffi_ret_float
1.191     pazsan   2797: *(float*)(gforth_ritem) = r;
1.178     pazsan   2798: return 0;
1.175     pazsan   2799: 
1.178     pazsan   2800: ffi-ret-double ( r -- )        gforth ffi_ret_double
1.191     pazsan   2801: *(double*)(gforth_ritem) = r;
1.178     pazsan   2802: return 0;
1.175     pazsan   2803: 
                   2804: \+
                   2805: 
1.142     pazsan   2806: \+OLDCALL
1.131     pazsan   2807: 
1.1       anton    2808: define(`uploop',
                   2809:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2810: define(`_uploop',
                   2811:        `ifelse($1, `$3', `$5',
                   2812:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2813: \ argflist(argnum): Forth argument list
                   2814: define(argflist,
                   2815:        `ifelse($1, 0, `',
                   2816:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2817: \ argdlist(argnum): declare C's arguments
                   2818: define(argdlist,
                   2819:        `ifelse($1, 0, `',
                   2820:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2821: \ argclist(argnum): pass C's arguments
                   2822: define(argclist,
                   2823:        `ifelse($1, 0, `',
                   2824:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2825: \ icall(argnum)
                   2826: define(icall,
1.47      anton    2827: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2828: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2829: 
                   2830: ')
                   2831: define(fcall,
1.47      anton    2832: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2833: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2834: 
                   2835: ')
                   2836: 
1.46      pazsan   2837: \ close ' to keep fontify happy
1.1       anton    2838: 
                   2839: uploop(i, 0, 7, `icall(i)')
                   2840: icall(20)
                   2841: uploop(i, 0, 7, `fcall(i)')
                   2842: fcall(20)
                   2843: 
1.15      pazsan   2844: \+
1.131     pazsan   2845: \+
1.1       anton    2846: 
1.142     pazsan   2847: \g peephole
1.46      pazsan   2848: 
1.112     pazsan   2849: \+peephole
                   2850: 
1.119     anton    2851: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2852: ""compile prim (incl. immargs) at @var{a_prim}""
                   2853: compile_prim1(a_prim);
                   2854: 
1.172     anton    2855: finish-code ( ... -- ... ) gforth finish_code
1.119     anton    2856: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2857: flushing).""
1.172     anton    2858: /* The ... above are a workaround for a bug in gcc-2.95, which fails
                   2859:    to save spTOS (gforth-fast --enable-force-reg) */
1.119     anton    2860: finish_code();
                   2861: 
                   2862: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2863: f = forget_dyncode(c_code);
                   2864: 
                   2865: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2866: ""a_prim is the code address of the primitive that has been
                   2867: compile_prim1ed to a_code""
1.121     anton    2868: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2869: 
1.112     pazsan   2870: \ set-next-code and call2 do not appear in images and can be
                   2871: \ renumbered arbitrarily
1.46      pazsan   2872: 
1.112     pazsan   2873: set-next-code ( #w -- ) gforth set_next_code
                   2874: #ifdef NO_IP
                   2875: next_code = (Label)w;
                   2876: #endif
1.34      jwilke   2877: 
1.112     pazsan   2878: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2879: /* call with explicit return address */
                   2880: #ifdef NO_IP
                   2881: INST_TAIL;
                   2882: JUMP(a_callee);
1.45      anton    2883: #else
1.112     pazsan   2884: assert(0);
1.45      anton    2885: #endif
1.131     pazsan   2886: 
                   2887: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2888: extern Cell groups[32];
                   2889: a_addr = groups;
1.51      anton    2890: 
1.54      pazsan   2891: \+
1.128     anton    2892: 
                   2893: \g static_super
                   2894: 
1.173     anton    2895: ifdef(`STACK_CACHE_FILE',
1.147     anton    2896: `include(peeprules.vmg)')
1.54      pazsan   2897: 
1.112     pazsan   2898: \g end

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