Annotation of gforth/prim, revision 1.171

1.1       anton       1: \ Gforth primitives
                      2: 
1.156     anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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 
                    103: \E return-stack stack-prefix R:
                    104: \E inst-stream  stack-prefix #
                    105: \E 
                    106: \E set-current
1.97      anton     107: \E store-optimization on
1.109     anton     108: \E ' noop tail-nextp2 ! \ now INST_TAIL just stores, but does not jump
1.128     anton     109: \E
                    110: \E include-skipped-insts on \ static superinsts include cells for components
                    111: \E                          \ useful for dynamic programming and
                    112: \E                          \ superinsts across entry points
1.67      anton     113: 
1.1       anton     114: \ 
                    115: \ 
                    116: \ 
                    117: \ In addition the following names can be used:
                    118: \ ip   the instruction pointer
                    119: \ sp   the data stack pointer
                    120: \ rp   the parameter stack pointer
                    121: \ lp   the locals stack pointer
                    122: \ NEXT executes NEXT
                    123: \ cfa  
                    124: \ NEXT1        executes NEXT1
                    125: \ FLAG(x)      makes a Forth flag from a C flag
                    126: \ 
                    127: \ 
                    128: \ 
                    129: \ Percentages in comments are from Koopmans book: average/maximum use
                    130: \ (taken from four, not very representative benchmarks)
                    131: \ 
                    132: \ 
                    133: \ 
                    134: \ To do:
                    135: \ 
                    136: \ throw execute, cfa and NEXT1 out?
                    137: \ macroize *ip, ip++, *ip++ (pipelining)?
                    138: 
1.145     anton     139: \ Stack caching setup
                    140: 
1.147     anton     141: ifdef(`M4_ENGINE_FAST', `include(cache1.vmg)', `include(cache0.vmg)')
1.145     anton     142: 
1.1       anton     143: \ these m4 macros would collide with identifiers
                    144: undefine(`index')
                    145: undefine(`shift')
1.78      pazsan    146: undefine(`symbols')
1.1       anton     147: 
1.140     anton     148: \F 0 [if]
                    149: 
1.139     anton     150: \ run-time routines for non-primitives.  They are defined as
                    151: \ primitives, because that simplifies things.
                    152: 
                    153: (docol)        ( -- R:a_retaddr )      gforth-internal paren_docol
                    154: ""run-time routine for colon definitions""
1.148     anton     155: #ifdef NO_IP
                    156: a_retaddr = next_code;
                    157: INST_TAIL;
                    158: goto **(Label *)PFA(CFA);
                    159: #else /* !defined(NO_IP) */
1.141     anton     160: a_retaddr = (Cell *)IP;
1.139     anton     161: SET_IP((Xt *)PFA(CFA));
1.148     anton     162: #endif /* !defined(NO_IP) */
1.139     anton     163: 
                    164: (docon) ( -- w )       gforth-internal paren_docon
                    165: ""run-time routine for constants""
                    166: w = *(Cell *)PFA(CFA);
1.148     anton     167: #ifdef NO_IP
                    168: INST_TAIL;
                    169: goto *next_code;
                    170: #endif /* defined(NO_IP) */
1.139     anton     171: 
                    172: (dovar) ( -- a_body )  gforth-internal paren_dovar
                    173: ""run-time routine for variables and CREATEd words""
                    174: a_body = PFA(CFA);
1.148     anton     175: #ifdef NO_IP
                    176: INST_TAIL;
                    177: goto *next_code;
                    178: #endif /* defined(NO_IP) */
1.139     anton     179: 
                    180: (douser) ( -- a_user ) gforth-internal paren_douser
                    181: ""run-time routine for constants""
                    182: a_user = (Cell *)(up+*(Cell *)PFA(CFA));
1.148     anton     183: #ifdef NO_IP
                    184: INST_TAIL;
                    185: goto *next_code;
                    186: #endif /* defined(NO_IP) */
1.139     anton     187: 
                    188: (dodefer) ( -- )       gforth-internal paren_dodefer
                    189: ""run-time routine for deferred words""
1.148     anton     190: #ifndef NO_IP
1.141     anton     191: ip=IP; /* undo any ip updating that may have been performed by NEXT_P0 */
1.148     anton     192: #endif /* !defined(NO_IP) */
1.141     anton     193: SUPER_END; /* !! probably unnecessary and may lead to measurement errors */
1.161     anton     194: VM_JUMP(EXEC1(*(Xt *)PFA(CFA)));
1.139     anton     195: 
                    196: (dofield) ( n1 -- n2 ) gforth-internal paren_field
                    197: ""run-time routine for fields""
                    198: n2 = n1 + *(Cell *)PFA(CFA);
1.148     anton     199: #ifdef NO_IP
                    200: INST_TAIL;
                    201: goto *next_code;
                    202: #endif /* defined(NO_IP) */
1.139     anton     203: 
                    204: (dodoes) ( -- a_body R:a_retaddr )     gforth-internal paren_dodoes
                    205: ""run-time routine for @code{does>}-defined words""
1.148     anton     206: #ifdef NO_IP
                    207: a_retaddr = next_code;
                    208: a_body = PFA(CFA);
                    209: INST_TAIL;
                    210: goto **(Label *)DOES_CODE1(CFA);
                    211: #else /* !defined(NO_IP) */
1.141     anton     212: a_retaddr = (Cell *)IP;
1.139     anton     213: a_body = PFA(CFA);
                    214: SET_IP(DOES_CODE1(CFA));
1.148     anton     215: #endif /* !defined(NO_IP) */
1.139     anton     216: 
                    217: (does-handler) ( -- )  gforth-internal paren_does_handler
                    218: ""just a slot to have an encoding for the DOESJUMP, 
                    219: which is no longer used anyway (!! eliminate this)""
1.140     anton     220: 
                    221: \F [endif]
1.139     anton     222: 
1.83      pazsan    223: \g control
                    224: 
1.47      anton     225: noop   ( -- )          gforth
1.1       anton     226: :
                    227:  ;
                    228: 
1.112     pazsan    229: call   ( #a_callee -- R:a_retaddr )    new
                    230: ""Call callee (a variant of docol with inline argument).""
                    231: #ifdef NO_IP
1.148     anton     232: assert(0);
1.112     pazsan    233: INST_TAIL;
                    234: JUMP(a_callee);
                    235: #else
                    236: #ifdef DEBUG
                    237:     {
                    238:       CFA_TO_NAME((((Cell *)a_callee)-2));
                    239:       fprintf(stderr,"%08lx: call %08lx %.*s\n",(Cell)ip,(Cell)a_callee,
                    240:              len,name);
                    241:     }
                    242: #endif
                    243: a_retaddr = (Cell *)IP;
                    244: SET_IP((Xt *)a_callee);
                    245: #endif
1.1       anton     246: 
1.47      anton     247: execute        ( xt -- )               core
1.29      crook     248: ""Perform the semantics represented by the execution token, @i{xt}.""
1.102     anton     249: #ifndef NO_IP
1.1       anton     250: ip=IP;
1.102     anton     251: #endif
1.76      anton     252: SUPER_END;
1.161     anton     253: VM_JUMP(EXEC1(xt));
1.1       anton     254: 
1.47      anton     255: perform        ( a_addr -- )   gforth
1.55      anton     256: ""@code{@@ execute}.""
1.1       anton     257: /* and pfe */
1.102     anton     258: #ifndef NO_IP
1.1       anton     259: ip=IP;
1.102     anton     260: #endif
1.76      anton     261: SUPER_END;
1.161     anton     262: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.1       anton     263: :
                    264:  @ execute ;
                    265: 
1.112     pazsan    266: ;s     ( R:w -- )              gforth  semis
                    267: ""The primitive compiled by @code{EXIT}.""
                    268: #ifdef NO_IP
                    269: INST_TAIL;
                    270: goto *(void *)w;
                    271: #else
                    272: SET_IP((Xt *)w);
                    273: #endif
                    274: 
                    275: unloop ( R:w1 R:w2 -- )        core
                    276: /* !! alias for 2rdrop */
                    277: :
                    278:  r> rdrop rdrop >r ;
                    279: 
                    280: lit-perform    ( #a_addr -- )  new     lit_perform
                    281: #ifndef NO_IP
                    282: ip=IP;
                    283: #endif
                    284: SUPER_END;
1.161     anton     285: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.112     pazsan    286: 
                    287: does-exec ( #a_cfa -- R:nest a_pfa )   new     does_exec
                    288: #ifdef NO_IP
                    289: /* compiled to LIT CALL by compile_prim */
                    290: assert(0);
                    291: #else
                    292: a_pfa = PFA(a_cfa);
                    293: nest = (Cell)IP;
                    294: #ifdef DEBUG
                    295:     {
                    296:       CFA_TO_NAME(a_cfa);
                    297:       fprintf(stderr,"%08lx: does %08lx %.*s\n",
                    298:              (Cell)ip,(Cell)a_cfa,len,name);
                    299:     }
                    300: #endif
                    301: SET_IP(DOES_CODE1(a_cfa));
                    302: #endif
                    303: 
1.15      pazsan    304: \+glocals
1.1       anton     305: 
1.112     pazsan    306: branch-lp+!# ( #a_target #nlocals -- ) gforth  branch_lp_plus_store_number
1.1       anton     307: /* this will probably not be used */
1.68      anton     308: lp += nlocals;
1.112     pazsan    309: #ifdef NO_IP
                    310: INST_TAIL;
                    311: JUMP(a_target);
                    312: #else
                    313: SET_IP((Xt *)a_target);
                    314: #endif
1.1       anton     315: 
1.15      pazsan    316: \+
1.1       anton     317: 
1.112     pazsan    318: branch ( #a_target -- )        gforth
                    319: #ifdef NO_IP
                    320: INST_TAIL;
                    321: JUMP(a_target);
                    322: #else
                    323: SET_IP((Xt *)a_target);
                    324: #endif
1.1       anton     325: :
1.112     pazsan    326:  r> @ >r ;
1.1       anton     327: 
1.112     pazsan    328: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     329: \ this is non-syntactical: code must open a brace that is closed by the macro
1.159     anton     330: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
                    331: \ this is non-syntactical: code must open a brace that is closed by the macro
1.1       anton     332: define(condbranch,
1.159     anton     333: $1 ( `#'a_target $2 ) $3
                    334: $4     #ifdef NO_IP
                    335: INST_TAIL;
                    336: #endif
                    337: $5     #ifdef NO_IP
                    338: JUMP(a_target);
                    339: #else
                    340: SET_IP((Xt *)a_target);
                    341: #endif
                    342: }
                    343: $6
                    344: 
                    345: \+glocals
                    346: 
                    347: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    348: $4     #ifdef NO_IP
                    349: INST_TAIL;
                    350: #endif
                    351: $5     lp += nlocals;
                    352: #ifdef NO_IP
                    353: JUMP(a_target);
                    354: #else
                    355: SET_IP((Xt *)a_target);
                    356: #endif
                    357: }
                    358: 
                    359: \+
                    360: )
                    361: 
                    362: \ version that generates two jumps (not good for PR 15242 workaround)
                    363: define(condbranch_twojump,
1.112     pazsan    364: $1 ( `#'a_target $2 ) $3
                    365: $4     #ifdef NO_IP
1.96      anton     366: INST_TAIL;
1.112     pazsan    367: #endif
                    368: $5     #ifdef NO_IP
                    369: JUMP(a_target);
                    370: #else
                    371: SET_IP((Xt *)a_target);
                    372: INST_TAIL; NEXT_P2;
                    373: #endif
1.1       anton     374: }
1.87      anton     375: SUPER_CONTINUE;
1.112     pazsan    376: $6
1.1       anton     377: 
1.15      pazsan    378: \+glocals
1.1       anton     379: 
1.112     pazsan    380: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    381: $4     #ifdef NO_IP
1.96      anton     382: INST_TAIL;
1.112     pazsan    383: #endif
                    384: $5     lp += nlocals;
                    385: #ifdef NO_IP
                    386: JUMP(a_target);
                    387: #else
                    388: SET_IP((Xt *)a_target);
                    389: INST_TAIL; NEXT_P2;
                    390: #endif
1.1       anton     391: }
1.87      anton     392: SUPER_CONTINUE;
1.1       anton     393: 
1.15      pazsan    394: \+
1.1       anton     395: )
                    396: 
1.68      anton     397: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    398: ,if (f==0) {
1.5       jwilke    399: ,:
1.112     pazsan    400:  0= dup 0=          \ !f f
                    401:  r> tuck cell+      \ !f branchoffset f IP+
                    402:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    403:  >r ;)
1.1       anton     404: 
                    405: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    406: \ is only used in if's (yet)
                    407: 
1.15      pazsan    408: \+xconds
1.1       anton     409: 
1.112     pazsan    410: ?dup-?branch   ( #a_target f -- f )    new     question_dupe_question_branch
1.1       anton     411: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    412: if (f==0) {
                    413:   sp++;
1.64      anton     414:   IF_spTOS(spTOS = sp[0]);
1.112     pazsan    415: #ifdef NO_IP
                    416: INST_TAIL;
                    417: JUMP(a_target);
                    418: #else
                    419: SET_IP((Xt *)a_target);
                    420:   INST_TAIL; NEXT_P2;
                    421: #endif
1.1       anton     422: }
1.87      anton     423: SUPER_CONTINUE;
1.1       anton     424: 
1.112     pazsan    425: ?dup-0=-?branch ( #a_target f -- ) new question_dupe_zero_equals_question_branch
1.1       anton     426: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    427: /* the approach taken here of declaring the word as having the stack
                    428: effect ( f -- ) and correcting for it in the branch-taken case costs a
                    429: few cycles in that case, but is easy to convert to a CONDBRANCH
                    430: invocation */
                    431: if (f!=0) {
                    432:   sp--;
1.112     pazsan    433: #ifdef NO_IP
                    434:   JUMP(a_target);
                    435: #else
                    436:   SET_IP((Xt *)a_target);
1.1       anton     437:   NEXT;
1.112     pazsan    438: #endif
1.1       anton     439: }
1.87      anton     440: SUPER_CONTINUE;
1.1       anton     441: 
1.15      pazsan    442: \+
1.31      jwilke    443: \fhas? skiploopprims 0= [IF]
1.1       anton     444: 
1.68      anton     445: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     446: n2=n1-1;
1.112     pazsan    447: ,if (n1) {
1.1       anton     448: ,:
                    449:  r> r> dup 1- >r
1.112     pazsan    450:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     451: 
1.68      anton     452: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     453: n2=n1+1;
1.112     pazsan    454: ,if (n2 != nlimit) {
1.1       anton     455: ,:
                    456:  r> r> 1+ r> 2dup =
                    457:  IF >r 1- >r cell+ >r
1.112     pazsan    458:  ELSE >r >r @ >r THEN ;)
1.1       anton     459: 
1.68      anton     460: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     461: /* !! check this thoroughly */
                    462: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    463: /* dependent upon two's complement arithmetic */
1.65      anton     464: Cell olddiff = n1-nlimit;
                    465: n2=n1+n;       
1.149     anton     466: ,if (((olddiff^(olddiff+n))    /* the limit is not crossed */
                    467:      &(olddiff^n))            /* OR it is a wrap-around effect */
                    468:     >=0) { /* & is used to avoid having two branches for gforth-native */
1.1       anton     469: ,:
                    470:  r> swap
                    471:  r> r> 2dup - >r
                    472:  2 pick r@ + r@ xor 0< 0=
                    473:  3 pick r> xor 0< 0= or
1.112     pazsan    474:  IF    >r + >r @ >r
1.1       anton     475:  ELSE  >r >r drop cell+ >r THEN ;)
                    476: 
1.15      pazsan    477: \+xconds
1.1       anton     478: 
1.68      anton     479: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     480: UCell olddiff = n1-nlimit;
                    481: n2=n1-u;
1.112     pazsan    482: ,if (olddiff>u) {
1.1       anton     483: ,)
                    484: 
1.68      anton     485: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     486: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    487: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    488: version of (+LOOP).""
                    489: /* !! check this thoroughly */
1.65      anton     490: Cell diff = n1-nlimit;
1.1       anton     491: Cell newdiff = diff+n;
                    492: if (n<0) {
                    493:     diff = -diff;
                    494:     newdiff = -newdiff;
                    495: }
1.65      anton     496: n2=n1+n;
1.149     anton     497: ,if (((~diff)|newdiff)<0) { /* use | to avoid two branches for gforth-native */
1.1       anton     498: ,)
                    499: 
1.15      pazsan    500: \+
1.1       anton     501: 
1.112     pazsan    502: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     503: /* or (for) = >r -- collides with unloop! */
1.65      anton     504: nlimit=0;
1.1       anton     505: :
                    506:  r> swap 0 >r >r >r ;
                    507: 
1.112     pazsan    508: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     509: :
                    510:  r> swap rot >r >r >r ;
                    511: 
1.112     pazsan    512: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    513: #ifdef NO_IP
                    514:     INST_TAIL;
                    515: #endif
1.1       anton     516: if (nstart == nlimit) {
1.112     pazsan    517: #ifdef NO_IP
                    518:     JUMP(a_target);
                    519: #else
                    520:     SET_IP((Xt *)a_target);
                    521: #endif
1.1       anton     522: }
                    523: :
                    524:   2dup =
                    525:   IF   r> swap rot >r >r
1.112     pazsan    526:        @ >r
1.1       anton     527:   ELSE r> swap rot >r >r
                    528:        cell+ >r
                    529:   THEN ;                               \ --> CORE-EXT
                    530: 
1.15      pazsan    531: \+xconds
1.1       anton     532: 
1.112     pazsan    533: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    534: #ifdef NO_IP
                    535:     INST_TAIL;
                    536: #endif
1.1       anton     537: if (nstart >= nlimit) {
1.112     pazsan    538: #ifdef NO_IP
                    539:     JUMP(a_target);
                    540: #else
                    541:     SET_IP((Xt *)a_target);
                    542: #endif
1.1       anton     543: }
                    544: :
                    545:  swap 2dup
                    546:  r> swap >r swap >r
                    547:  >=
                    548:  IF
1.112     pazsan    549:      @
1.1       anton     550:  ELSE
                    551:      cell+
                    552:  THEN  >r ;
                    553: 
1.112     pazsan    554: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    555: #ifdef NO_IP
                    556:     INST_TAIL;
                    557: #endif
1.1       anton     558: if (ustart >= ulimit) {
1.112     pazsan    559: #ifdef NO_IP
                    560: JUMP(a_target);
                    561: #else
                    562: SET_IP((Xt *)a_target);
                    563: #endif
1.1       anton     564: }
                    565: :
                    566:  swap 2dup
                    567:  r> swap >r swap >r
                    568:  u>=
                    569:  IF
1.112     pazsan    570:      @
1.1       anton     571:  ELSE
                    572:      cell+
                    573:  THEN  >r ;
                    574: 
1.112     pazsan    575: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    576: #ifdef NO_IP
                    577:     INST_TAIL;
                    578: #endif
1.1       anton     579: if (nstart <= nlimit) {
1.112     pazsan    580: #ifdef NO_IP
                    581: JUMP(a_target);
                    582: #else
                    583: SET_IP((Xt *)a_target);
                    584: #endif
1.1       anton     585: }
                    586: :
                    587:  swap 2dup
                    588:  r> swap >r swap >r
                    589:  <=
                    590:  IF
1.112     pazsan    591:      @
1.1       anton     592:  ELSE
                    593:      cell+
                    594:  THEN  >r ;
                    595: 
1.112     pazsan    596: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    597: #ifdef NO_IP
                    598:     INST_TAIL;
                    599: #endif
1.1       anton     600: if (ustart <= ulimit) {
1.112     pazsan    601: #ifdef NO_IP
                    602: JUMP(a_target);
                    603: #else
                    604: SET_IP((Xt *)a_target);
                    605: #endif
1.1       anton     606: }
                    607: :
                    608:  swap 2dup
                    609:  r> swap >r swap >r
                    610:  u<=
                    611:  IF
1.112     pazsan    612:      @
1.1       anton     613:  ELSE
                    614:      cell+
                    615:  THEN  >r ;
                    616: 
1.15      pazsan    617: \+
1.1       anton     618: 
1.5       jwilke    619: \ don't make any assumptions where the return stack is!!
                    620: \ implement this in machine code if it should run quickly!
                    621: 
1.65      anton     622: i      ( R:n -- R:n n )                core
1.1       anton     623: :
1.5       jwilke    624: \ rp@ cell+ @ ;
                    625:   r> r> tuck >r >r ;
1.1       anton     626: 
1.65      anton     627: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     628: :
1.5       jwilke    629: \ rp@ cell+ cell+ @ ;
                    630:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    631: variable itmp
1.1       anton     632: 
1.65      anton     633: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     634: :
1.5       jwilke    635: \ rp@ cell+ cell+ cell+ @ ;
                    636:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    637: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     638: 
1.65      anton     639: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     640: :
1.5       jwilke    641: \ rp@ [ 5 cells ] Literal + @ ;
                    642:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    643: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    644: 
                    645: \f[THEN]
1.1       anton     646: 
                    647: \ digit is high-level: 0/0%
                    648: 
1.83      pazsan    649: \g strings
                    650: 
1.47      anton     651: move   ( c_from c_to ucount -- )               core
1.52      anton     652: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     653: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     654: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     655: memmove(c_to,c_from,ucount);
                    656: /* make an Ifdef for bsd and others? */
                    657: :
                    658:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    659: 
1.47      anton     660: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     661: ""Copy the contents of @i{ucount} characters from data space at
                    662: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    663: from low address to high address; i.e., for overlapping areas it is
                    664: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     665: cmove(c_from,c_to,u);
1.1       anton     666: :
                    667:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    668: 
1.47      anton     669: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     670: ""Copy the contents of @i{ucount} characters from data space at
                    671: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    672: from high address to low address; i.e., for overlapping areas it is
                    673: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     674: cmove_up(c_from,c_to,u);
1.1       anton     675: :
                    676:  dup 0= IF  drop 2drop exit  THEN
                    677:  rot over + -rot bounds swap 1-
                    678:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    679: 
1.47      anton     680: fill   ( c_addr u c -- )       core
1.52      anton     681: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     682: memset(c_addr,c,u);
                    683: :
                    684:  -rot bounds
                    685:  ?DO  dup I c!  LOOP  drop ;
                    686: 
1.47      anton     687: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     688: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    689: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     690: is 1. Currently this is based on the machine's character
1.26      crook     691: comparison. In the future, this may change to consider the current
1.1       anton     692: locale and its collation order.""
1.46      pazsan    693: /* close ' to keep fontify happy */ 
1.125     anton     694: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     695: :
1.43      pazsan    696:  rot 2dup swap - >r min swap -text dup
                    697:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    698: : -text ( c_addr1 u c_addr2 -- n )
                    699:  swap bounds
                    700:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    701:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    702: : sgn ( n -- -1/0/1 )
                    703:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     704: 
1.125     anton     705: \ -text is only used by replaced primitives now; move it elsewhere
                    706: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    707: \ n = memcmp(c_addr1, c_addr2, u);
                    708: \ if (n<0)
                    709: \   n = -1;
                    710: \ else if (n>0)
                    711: \   n = 1;
                    712: \ :
                    713: \  swap bounds
                    714: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    715: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    716: \ : sgn ( n -- -1/0/1 )
                    717: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     718: 
1.47      anton     719: toupper        ( c1 -- c2 )    gforth
1.29      crook     720: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     721: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     722: c2 = toupper(c1);
                    723: :
                    724:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    725: 
1.47      anton     726: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     727: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     728: characters from the start of the string.""
1.1       anton     729: c_addr2 = c_addr1+n;
                    730: u2 = u1-n;
                    731: :
                    732:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    733: 
1.83      pazsan    734: \g arith
                    735: 
1.112     pazsan    736: lit    ( #w -- w )             gforth
                    737: :
                    738:  r> dup @ swap cell+ >r ;
                    739: 
1.47      anton     740: +      ( n1 n2 -- n )          core    plus
1.1       anton     741: n = n1+n2;
                    742: 
1.112     pazsan    743: \ lit+ / lit_plus = lit +
                    744: 
                    745: lit+   ( n1 #n2 -- n )         new     lit_plus
                    746: n=n1+n2;
                    747: 
1.1       anton     748: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     749: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     750: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     751: n = n1+n3;
                    752: :
                    753:  rot + swap ;
                    754: 
1.47      anton     755: -      ( n1 n2 -- n )          core    minus
1.1       anton     756: n = n1-n2;
                    757: :
                    758:  negate + ;
                    759: 
1.47      anton     760: negate ( n1 -- n2 )            core
1.1       anton     761: /* use minus as alias */
                    762: n2 = -n1;
                    763: :
                    764:  invert 1+ ;
                    765: 
1.47      anton     766: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     767: n2 = n1+1;
                    768: :
                    769:  1 + ;
                    770: 
1.47      anton     771: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     772: n2 = n1-1;
                    773: :
                    774:  1 - ;
                    775: 
1.47      anton     776: max    ( n1 n2 -- n )  core
1.1       anton     777: if (n1<n2)
                    778:   n = n2;
                    779: else
                    780:   n = n1;
                    781: :
                    782:  2dup < IF swap THEN drop ;
                    783: 
1.47      anton     784: min    ( n1 n2 -- n )  core
1.1       anton     785: if (n1<n2)
                    786:   n = n1;
                    787: else
                    788:   n = n2;
                    789: :
                    790:  2dup > IF swap THEN drop ;
                    791: 
1.52      anton     792: abs    ( n -- u )      core
                    793: if (n<0)
                    794:   u = -n;
1.1       anton     795: else
1.52      anton     796:   u = n;
1.1       anton     797: :
                    798:  dup 0< IF negate THEN ;
                    799: 
1.47      anton     800: *      ( n1 n2 -- n )          core    star
1.1       anton     801: n = n1*n2;
                    802: :
                    803:  um* drop ;
                    804: 
1.47      anton     805: /      ( n1 n2 -- n )          core    slash
1.1       anton     806: n = n1/n2;
1.169     pazsan    807: if(FLOORED_DIV && ((n1^n2) < 0) && (n1%n2 != 0)) n--;
1.1       anton     808: :
                    809:  /mod nip ;
                    810: 
1.47      anton     811: mod    ( n1 n2 -- n )          core
1.1       anton     812: n = n1%n2;
1.169     pazsan    813: if(FLOORED_DIV && ((n1^n2) < 0) && n!=0) n += n2;
1.1       anton     814: :
                    815:  /mod drop ;
                    816: 
1.47      anton     817: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     818: n4 = n1/n2;
                    819: n3 = n1%n2; /* !! is this correct? look into C standard! */
1.169     pazsan    820: if (FLOORED_DIV && ((n1^n2) < 0) && n3!=0) {
1.162     pazsan    821:   n4--;
                    822:   n3+=n2;
                    823: }
1.1       anton     824: :
                    825:  >r s>d r> fm/mod ;
                    826: 
1.162     pazsan    827: */mod  ( n1 n2 n3 -- n4 n5 )   core    star_slash_mod
                    828: ""n1*n2=n3*n5+n4, with the intermediate result (n1*n2) being double.""
                    829: #ifdef BUGGY_LL_MUL
                    830: DCell d = mmul(n1,n2);
                    831: #else
                    832: DCell d = (DCell)n1 * (DCell)n2;
                    833: #endif
                    834: #ifdef BUGGY_LL_DIV
                    835: DCell r = fmdiv(d,n3);
                    836: n4=DHI(r);
                    837: n5=DLO(r);
                    838: #else
                    839: /* assumes that the processor uses either floored or symmetric division */
                    840: n5 = d/n3;
                    841: n4 = d%n3;
1.169     pazsan    842: if (FLOORED_DIV && ((DHI(d)^n3)<0) && n4!=0) {
1.162     pazsan    843:   n5--;
                    844:   n4+=n3;
                    845: }
                    846: #endif
                    847: :
                    848:  >r m* r> fm/mod ;
                    849: 
                    850: */     ( n1 n2 n3 -- n4 )      core    star_slash
                    851: ""n4=(n1*n2)/n3, with the intermediate result being double.""
                    852: #ifdef BUGGY_LL_MUL
                    853: DCell d = mmul(n1,n2);
                    854: #else
                    855: DCell d = (DCell)n1 * (DCell)n2;
                    856: #endif
                    857: #ifdef BUGGY_LL_DIV
                    858: DCell r = fmdiv(d,n3);
1.168     pazsan    859: n4=DLO(r);
1.162     pazsan    860: #else
                    861: /* assumes that the processor uses either floored or symmetric division */
                    862: n4 = d/n3;
1.169     pazsan    863: if (FLOORED_DIV && ((DHI(d)^n3)<0) && (d%n3)!=0) n4--;
1.162     pazsan    864: #endif
                    865: :
                    866:  */mod nip ;
                    867: 
1.47      anton     868: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     869: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     870: n2 = 2*n1;
                    871: :
                    872:  dup + ;
                    873: 
1.47      anton     874: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     875: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    876: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     877: n2 = n1>>1;
                    878: :
                    879:  dup MINI and IF 1 ELSE 0 THEN
                    880:  [ bits/byte cell * 1- ] literal 
1.5       jwilke    881:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     882:      IF 1 ELSE 0 THEN or r> swap
                    883:  LOOP nip ;
                    884: 
1.47      anton     885: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     886: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.158     pazsan    887: #ifdef BUGGY_LL_DIV
1.165     anton     888: #ifdef ASM_SM_SLASH_REM
                    889: ASM_SM_SLASH_REM(d1.lo, d1.hi, n1, n2, n3);
1.169     pazsan    890: if (((DHI(d1)^n1)<0) && n2!=0) {
1.165     anton     891:   n3--;
                    892:   n2+=n1;
                    893: }
                    894: #else /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     895: DCell r = fmdiv(d1,n1);
1.162     pazsan    896: n2=DHI(r);
                    897: n3=DLO(r);
1.165     anton     898: #endif /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     899: #else
1.166     anton     900: #ifdef ASM_SM_SLASH_REM4
                    901: ASM_SM_SLASH_REM4(d1, n1, n2, n3);
1.169     pazsan    902: if (((DHI(d1)^n1)<0) && n2!=0) {
1.166     anton     903:   n3--;
                    904:   n2+=n1;
                    905: }
                    906: #else /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     907: /* assumes that the processor uses either floored or symmetric division */
                    908: n3 = d1/n1;
                    909: n2 = d1%n1;
                    910: /* note that this 1%-3>0 is optimized by the compiler */
1.169     pazsan    911: if (1%-3>0 && ((DHI(d1)^n1)<0) && n2!=0) {
1.1       anton     912:   n3--;
                    913:   n2+=n1;
                    914: }
1.166     anton     915: #endif /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     916: #endif
                    917: :
                    918:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    919:  over       0< IF  tuck + swap  THEN
                    920:  um/mod
                    921:  r> 0< IF  swap negate swap  THEN ;
                    922: 
1.47      anton     923: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     924: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.158     pazsan    925: #ifdef BUGGY_LL_DIV
1.165     anton     926: #ifdef ASM_SM_SLASH_REM
                    927: ASM_SM_SLASH_REM(d1.lo, d1.hi, n1, n2, n3);
                    928: #else /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     929: DCell r = smdiv(d1,n1);
1.162     pazsan    930: n2=DHI(r);
                    931: n3=DLO(r);
1.165     anton     932: #endif /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     933: #else
1.166     anton     934: #ifdef ASM_SM_SLASH_REM4
                    935: ASM_SM_SLASH_REM4(d1, n1, n2, n3);
                    936: #else /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     937: /* assumes that the processor uses either floored or symmetric division */
                    938: n3 = d1/n1;
                    939: n2 = d1%n1;
                    940: /* note that this 1%-3<0 is optimized by the compiler */
1.169     pazsan    941: if (1%-3<0 && ((DHI(d1)^n1)<0) && n2!=0) {
1.1       anton     942:   n3++;
                    943:   n2-=n1;
                    944: }
1.166     anton     945: #endif /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     946: #endif
                    947: :
                    948:  over >r dup >r abs -rot
                    949:  dabs rot um/mod
                    950:  r> r@ xor 0< IF       negate       THEN
                    951:  r>        0< IF  swap negate swap  THEN ;
                    952: 
1.47      anton     953: m*     ( n1 n2 -- d )          core    m_star
1.158     pazsan    954: #ifdef BUGGY_LL_MUL
1.1       anton     955: d = mmul(n1,n2);
                    956: #else
                    957: d = (DCell)n1 * (DCell)n2;
                    958: #endif
                    959: :
                    960:  2dup      0< and >r
                    961:  2dup swap 0< and >r
                    962:  um* r> - r> - ;
                    963: 
1.47      anton     964: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     965: /* use u* as alias */
1.158     pazsan    966: #ifdef BUGGY_LL_MUL
1.1       anton     967: ud = ummul(u1,u2);
                    968: #else
                    969: ud = (UDCell)u1 * (UDCell)u2;
                    970: #endif
                    971: :
1.137     pazsan    972:    0 -rot dup [ 8 cells ] literal -
1.1       anton     973:    DO
1.137     pazsan    974:        dup 0< I' and d2*+ drop
                    975:    LOOP ;
1.1       anton     976: : d2*+ ( ud n -- ud+n c )
                    977:    over MINI
                    978:    and >r >r 2dup d+ swap r> + swap r> ;
                    979: 
1.47      anton     980: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton     981: ""ud=u3*u1+u2, u1>u2>=0""
1.158     pazsan    982: #ifdef BUGGY_LL_DIV
1.165     anton     983: #ifdef ASM_UM_SLASH_MOD
                    984: ASM_UM_SLASH_MOD(ud.lo, ud.hi, u1, u2, u3);
                    985: #else /* !defined(ASM_UM_SLASH_MOD) */
1.1       anton     986: UDCell r = umdiv(ud,u1);
1.162     pazsan    987: u2=DHI(r);
                    988: u3=DLO(r);
1.165     anton     989: #endif /* !defined(ASM_UM_SLASH_MOD) */
1.1       anton     990: #else
1.166     anton     991: #ifdef ASM_UM_SLASH_MOD4
1.167     anton     992: ASM_UM_SLASH_MOD4(ud, u1, u2, u3);
1.166     anton     993: #else /* !defined(ASM_UM_SLASH_MOD4) */
1.1       anton     994: u3 = ud/u1;
                    995: u2 = ud%u1;
1.166     anton     996: #endif /* !defined(ASM_UM_SLASH_MOD4) */
1.1       anton     997: #endif
                    998: :
                    999:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke   1000:    ?DO /modstep
1.1       anton    1001:    LOOP drop swap 1 rshift or swap ;
                   1002: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke   1003:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton    1004: : d2*+ ( ud n -- ud+n c )
                   1005:    over MINI
                   1006:    and >r >r 2dup d+ swap r> + swap r> ;
                   1007: 
1.47      anton    1008: m+     ( d1 n -- d2 )          double          m_plus
1.158     pazsan   1009: #ifdef BUGGY_LL_ADD
                   1010: DLO_IS(d2, DLO(d1)+n);
                   1011: DHI_IS(d2, DHI(d1) - (n<0) + (DLO(d2)<DLO(d1)));
1.1       anton    1012: #else
                   1013: d2 = d1+n;
                   1014: #endif
                   1015: :
                   1016:  s>d d+ ;
                   1017: 
1.47      anton    1018: d+     ( d1 d2 -- d )          double  d_plus
1.158     pazsan   1019: #ifdef BUGGY_LL_ADD
                   1020: DLO_IS(d, DLO(d1) + DLO(d2));
                   1021: DHI_IS(d, DHI(d1) + DHI(d2) + (d.lo<DLO(d1)));
1.1       anton    1022: #else
                   1023: d = d1+d2;
                   1024: #endif
                   1025: :
                   1026:  rot + >r tuck + swap over u> r> swap - ;
                   1027: 
1.47      anton    1028: d-     ( d1 d2 -- d )          double          d_minus
1.158     pazsan   1029: #ifdef BUGGY_LL_ADD
                   1030: DLO_IS(d, DLO(d1) - DLO(d2));
                   1031: DHI_IS(d, DHI(d1)-DHI(d2)-(DLO(d1)<DLO(d2)));
1.1       anton    1032: #else
                   1033: d = d1-d2;
                   1034: #endif
                   1035: :
                   1036:  dnegate d+ ;
                   1037: 
1.47      anton    1038: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton    1039: /* use dminus as alias */
1.158     pazsan   1040: #ifdef BUGGY_LL_ADD
1.1       anton    1041: d2 = dnegate(d1);
                   1042: #else
                   1043: d2 = -d1;
                   1044: #endif
                   1045: :
                   1046:  invert swap negate tuck 0= - ;
                   1047: 
1.47      anton    1048: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton    1049: ""Shift left by 1; also works on unsigned numbers""
1.158     pazsan   1050: #ifdef BUGGY_LL_SHIFT
                   1051: DLO_IS(d2, DLO(d1)<<1);
                   1052: DHI_IS(d2, (DHI(d1)<<1) | (DLO(d1)>>(CELL_BITS-1)));
1.1       anton    1053: #else
                   1054: d2 = 2*d1;
                   1055: #endif
                   1056: :
                   1057:  2dup d+ ;
                   1058: 
1.47      anton    1059: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton    1060: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                   1061: division by 2.""
1.158     pazsan   1062: #ifdef BUGGY_LL_SHIFT
                   1063: DHI_IS(d2, DHI(d1)>>1);
                   1064: DLO_IS(d2, (DLO(d1)>>1) | (DHI(d1)<<(CELL_BITS-1)));
1.1       anton    1065: #else
                   1066: d2 = d1>>1;
                   1067: #endif
                   1068: :
                   1069:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                   1070:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                   1071: 
1.47      anton    1072: and    ( w1 w2 -- w )          core
1.1       anton    1073: w = w1&w2;
                   1074: 
1.47      anton    1075: or     ( w1 w2 -- w )          core
1.1       anton    1076: w = w1|w2;
                   1077: :
                   1078:  invert swap invert and invert ;
                   1079: 
1.47      anton    1080: xor    ( w1 w2 -- w )          core    x_or
1.1       anton    1081: w = w1^w2;
                   1082: 
1.47      anton    1083: invert ( w1 -- w2 )            core
1.1       anton    1084: w2 = ~w1;
                   1085: :
                   1086:  MAXU xor ;
                   1087: 
1.47      anton    1088: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton    1089: ""Logical shift right by @i{n} bits.""
1.154     pazsan   1090: #ifdef BROKEN_SHIFT
                   1091:   u2 = rshift(u1, n);
                   1092: #else
                   1093:   u2 = u1 >> n;
                   1094: #endif
1.1       anton    1095: :
                   1096:     0 ?DO 2/ MAXI and LOOP ;
                   1097: 
1.47      anton    1098: lshift ( u1 n -- u2 )          core    l_shift
1.154     pazsan   1099: #ifdef BROKEN_SHIFT
                   1100:   u2 = lshift(u1, n);
                   1101: #else
                   1102:   u2 = u1 << n;
                   1103: #endif
1.1       anton    1104: :
                   1105:     0 ?DO 2* LOOP ;
                   1106: 
1.110     pazsan   1107: \g compare
                   1108: 
1.1       anton    1109: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1110: define(comparisons,
1.47      anton    1111: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1112: f = FLAG($4==$5);
                   1113: :
                   1114:     [ char $1x char 0 = [IF]
                   1115:        ] IF false ELSE true THEN [
                   1116:     [ELSE]
                   1117:        ] xor 0= [
                   1118:     [THEN] ] ;
                   1119: 
1.47      anton    1120: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1121: f = FLAG($4!=$5);
                   1122: :
                   1123:     [ char $1x char 0 = [IF]
                   1124:        ] IF true ELSE false THEN [
                   1125:     [ELSE]
                   1126:        ] xor 0<> [
                   1127:     [THEN] ] ;
                   1128: 
1.47      anton    1129: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1130: f = FLAG($4<$5);
                   1131: :
                   1132:     [ char $1x char 0 = [IF]
                   1133:        ] MINI and 0<> [
                   1134:     [ELSE] char $1x char u = [IF]
                   1135:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                   1136:        [ELSE]
                   1137:            ] MINI xor >r MINI xor r> u< [
                   1138:        [THEN]
                   1139:     [THEN] ] ;
                   1140: 
1.47      anton    1141: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1142: f = FLAG($4>$5);
                   1143: :
                   1144:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1145:     $1< ;
                   1146: 
1.47      anton    1147: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1148: f = FLAG($4<=$5);
                   1149: :
                   1150:     $1> 0= ;
                   1151: 
1.47      anton    1152: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1153: f = FLAG($4>=$5);
                   1154: :
                   1155:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1156:     $1<= ;
                   1157: 
                   1158: )
                   1159: 
                   1160: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1161: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1162: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1163: 
                   1164: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1165: define(dcomparisons,
1.47      anton    1166: $1=    ( $2 -- f )             $6      $3equals
1.158     pazsan   1167: #ifdef BUGGY_LL_CMP
1.1       anton    1168: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1169: #else
                   1170: f = FLAG($4==$5);
                   1171: #endif
                   1172: 
1.47      anton    1173: $1<>   ( $2 -- f )             $7      $3not_equals
1.158     pazsan   1174: #ifdef BUGGY_LL_CMP
1.1       anton    1175: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1176: #else
                   1177: f = FLAG($4!=$5);
                   1178: #endif
                   1179: 
1.47      anton    1180: $1<    ( $2 -- f )             $8      $3less_than
1.158     pazsan   1181: #ifdef BUGGY_LL_CMP
1.1       anton    1182: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1183: #else
                   1184: f = FLAG($4<$5);
                   1185: #endif
                   1186: 
1.47      anton    1187: $1>    ( $2 -- f )             $9      $3greater_than
1.158     pazsan   1188: #ifdef BUGGY_LL_CMP
1.1       anton    1189: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1190: #else
                   1191: f = FLAG($4>$5);
                   1192: #endif
                   1193: 
1.47      anton    1194: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.158     pazsan   1195: #ifdef BUGGY_LL_CMP
1.1       anton    1196: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1197: #else
                   1198: f = FLAG($4<=$5);
                   1199: #endif
                   1200: 
1.47      anton    1201: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.158     pazsan   1202: #ifdef BUGGY_LL_CMP
1.1       anton    1203: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1204: #else
                   1205: f = FLAG($4>=$5);
                   1206: #endif
                   1207: 
                   1208: )
                   1209: 
1.15      pazsan   1210: \+dcomps
1.1       anton    1211: 
                   1212: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1213: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1214: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1215: 
1.15      pazsan   1216: \+
1.1       anton    1217: 
1.47      anton    1218: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1219: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1220: unsigned and signed numbers (but not a mixture).  Another way to think
                   1221: about this word is to consider the numbers as a circle (wrapping
                   1222: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1223: min-n for signed numbers); now consider the range from u2 towards
                   1224: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1225: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1226: f = FLAG(u1-u2 < u3-u2);
                   1227: :
                   1228:  over - >r - r> u< ;
                   1229: 
1.112     pazsan   1230: \g stack
                   1231: 
                   1232: useraddr       ( #u -- a_addr )        new
                   1233: a_addr = (Cell *)(up+u);
                   1234: 
                   1235: up!    ( a_addr -- )   gforth  up_store
                   1236: UP=up=(char *)a_addr;
                   1237: :
                   1238:  up ! ;
                   1239: Variable UP
                   1240: 
1.47      anton    1241: sp@    ( -- a_addr )           gforth          sp_fetch
1.1       anton    1242: a_addr = sp+1;
                   1243: 
1.47      anton    1244: sp!    ( a_addr -- )           gforth          sp_store
1.1       anton    1245: sp = a_addr;
1.64      anton    1246: /* works with and without spTOS caching */
1.1       anton    1247: 
1.47      anton    1248: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1249: a_addr = rp;
                   1250: 
1.47      anton    1251: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1252: rp = a_addr;
                   1253: 
1.15      pazsan   1254: \+floating
1.1       anton    1255: 
1.47      anton    1256: fp@    ( -- f_addr )   gforth  fp_fetch
1.1       anton    1257: f_addr = fp;
                   1258: 
1.47      anton    1259: fp!    ( f_addr -- )   gforth  fp_store
1.1       anton    1260: fp = f_addr;
                   1261: 
1.15      pazsan   1262: \+
1.1       anton    1263: 
1.65      anton    1264: >r     ( w -- R:w )            core    to_r
1.1       anton    1265: :
                   1266:  (>r) ;
                   1267: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1268: 
1.65      anton    1269: r>     ( R:w -- w )            core    r_from
1.1       anton    1270: :
                   1271:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1272: Create (rdrop) ' ;s A,
                   1273: 
1.65      anton    1274: rdrop  ( R:w -- )              gforth
1.1       anton    1275: :
                   1276:  r> r> drop >r ;
                   1277: 
1.136     pazsan   1278: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1279: :
                   1280:  swap r> swap >r swap >r >r ;
                   1281: 
1.136     pazsan   1282: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1283: :
                   1284:  r> r> swap r> swap >r swap ;
                   1285: 
1.136     pazsan   1286: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1287: :
                   1288:  i' j ;
                   1289: 
1.136     pazsan   1290: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1291: :
                   1292:  r> r> drop r> drop >r ;
                   1293: 
1.47      anton    1294: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1295: :
                   1296:  sp@ cell+ @ ;
                   1297: 
1.47      anton    1298: drop   ( w -- )                core
1.1       anton    1299: :
                   1300:  IF THEN ;
                   1301: 
1.47      anton    1302: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1303: :
                   1304:  >r (swap) ! r> (swap) @ ;
                   1305: Variable (swap)
                   1306: 
1.47      anton    1307: dup    ( w -- w w )            core    dupe
1.1       anton    1308: :
                   1309:  sp@ @ ;
                   1310: 
1.47      anton    1311: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1312: :
                   1313: [ defined? (swap) [IF] ]
                   1314:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1315: Variable (rot)
                   1316: [ELSE] ]
                   1317:     >r swap r> swap ;
                   1318: [THEN]
                   1319: 
1.47      anton    1320: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1321: :
                   1322:  rot rot ;
                   1323: 
1.47      anton    1324: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1325: :
1.6       jwilke   1326:  swap drop ;
1.1       anton    1327: 
1.47      anton    1328: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1329: :
                   1330:  swap over ;
                   1331: 
1.47      anton    1332: ?dup   ( w -- w )                      core    question_dupe
1.52      anton    1333: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1334: @code{dup} if w is nonzero.""
1.1       anton    1335: if (w!=0) {
1.64      anton    1336:   IF_spTOS(*sp-- = w;)
1.1       anton    1337: #ifndef USE_TOS
                   1338:   *--sp = w;
                   1339: #endif
                   1340: }
                   1341: :
                   1342:  dup IF dup THEN ;
                   1343: 
1.47      anton    1344: pick   ( u -- w )                      core-ext
1.52      anton    1345: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1       anton    1346: w = sp[u+1];
                   1347: :
                   1348:  1+ cells sp@ + @ ;
                   1349: 
1.47      anton    1350: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1351: :
                   1352:  drop drop ;
                   1353: 
1.47      anton    1354: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1355: :
                   1356:  over over ;
                   1357: 
1.47      anton    1358: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1359: :
                   1360:  3 pick 3 pick ;
                   1361: 
1.47      anton    1362: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1363: :
                   1364:  rot >r rot r> ;
                   1365: 
1.47      anton    1366: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1367: :
                   1368:  >r >r 2swap r> r> 2swap ;
                   1369: 
1.47      anton    1370: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1371: :
                   1372:  2swap 2drop ;
                   1373: 
1.47      anton    1374: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1375: :
                   1376:  2swap 2over ;
                   1377: 
                   1378: \ toggle is high-level: 0.11/0.42%
                   1379: 
1.110     pazsan   1380: \g memory
                   1381: 
1.47      anton    1382: @      ( a_addr -- w )         core    fetch
1.52      anton    1383: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1384: w = *a_addr;
                   1385: 
1.112     pazsan   1386: \ lit@ / lit_fetch = lit @
                   1387: 
                   1388: lit@           ( #a_addr -- w ) new    lit_fetch
                   1389: w = *a_addr;
                   1390: 
1.47      anton    1391: !      ( w a_addr -- )         core    store
1.52      anton    1392: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1393: *a_addr = w;
                   1394: 
1.47      anton    1395: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1396: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1397: *a_addr += n;
                   1398: :
                   1399:  tuck @ + swap ! ;
                   1400: 
1.47      anton    1401: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1402: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1403: c = *c_addr;
                   1404: :
                   1405: [ bigendian [IF] ]
                   1406:     [ cell>bit 4 = [IF] ]
                   1407:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1408:        IF  $FF and  ELSE  8>>  THEN  ;
                   1409:     [ [ELSE] ]
                   1410:        dup [ cell 1- ] literal and
                   1411:        tuck - @ swap [ cell 1- ] literal xor
                   1412:        0 ?DO 8>> LOOP $FF and
                   1413:     [ [THEN] ]
                   1414: [ [ELSE] ]
                   1415:     [ cell>bit 4 = [IF] ]
                   1416:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1417:        IF  8>>  ELSE  $FF and  THEN
                   1418:     [ [ELSE] ]
                   1419:        dup [ cell  1- ] literal and 
                   1420:        tuck - @ swap
                   1421:        0 ?DO 8>> LOOP 255 and
                   1422:     [ [THEN] ]
                   1423: [ [THEN] ]
                   1424: ;
                   1425: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1426: 
1.47      anton    1427: c!     ( c c_addr -- )         core    c_store
1.52      anton    1428: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1429: *c_addr = c;
                   1430: :
                   1431: [ bigendian [IF] ]
                   1432:     [ cell>bit 4 = [IF] ]
                   1433:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1434:        dup -2 and @ over 1 and cells masks + @ and
                   1435:        r> or swap -2 and ! ;
                   1436:        Create masks $00FF , $FF00 ,
                   1437:     [ELSE] ]
                   1438:        dup [ cell 1- ] literal and dup 
                   1439:        [ cell 1- ] literal xor >r
                   1440:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1441:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1442:     [THEN]
                   1443: [ELSE] ]
                   1444:     [ cell>bit 4 = [IF] ]
                   1445:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1446:        dup -2 and @ over 1 and cells masks + @ and
                   1447:        r> or swap -2 and ! ;
                   1448:        Create masks $FF00 , $00FF ,
                   1449:     [ELSE] ]
                   1450:        dup [ cell 1- ] literal and dup >r
                   1451:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1452:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1453:     [THEN]
                   1454: [THEN]
                   1455: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1456: 
1.47      anton    1457: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1458: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1459: a_addr[0] = w2;
                   1460: a_addr[1] = w1;
                   1461: :
                   1462:  tuck ! cell+ ! ;
                   1463: 
1.47      anton    1464: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1465: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1466: the content of the next cell.""
1.1       anton    1467: w2 = a_addr[0];
                   1468: w1 = a_addr[1];
                   1469: :
                   1470:  dup cell+ @ swap @ ;
                   1471: 
1.47      anton    1472: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1473: ""@code{1 cells +}""
1.1       anton    1474: a_addr2 = a_addr1+1;
                   1475: :
                   1476:  cell + ;
                   1477: 
1.47      anton    1478: cells  ( n1 -- n2 )            core
1.52      anton    1479: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1480: n2 = n1 * sizeof(Cell);
                   1481: :
                   1482:  [ cell
                   1483:  2/ dup [IF] ] 2* [ [THEN]
                   1484:  2/ dup [IF] ] 2* [ [THEN]
                   1485:  2/ dup [IF] ] 2* [ [THEN]
                   1486:  2/ dup [IF] ] 2* [ [THEN]
                   1487:  drop ] ;
                   1488: 
1.47      anton    1489: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1490: ""@code{1 chars +}.""
1.1       anton    1491: c_addr2 = c_addr1 + 1;
                   1492: :
                   1493:  1+ ;
                   1494: 
1.47      anton    1495: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1496: n2 = n1 * sizeof(Char);
                   1497: :
                   1498:  ;
                   1499: 
1.47      anton    1500: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1501: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1502: counted string at @i{c-addr1}.""
1.1       anton    1503: u = *c_addr1;
                   1504: c_addr2 = c_addr1+1;
                   1505: :
                   1506:  dup 1+ swap c@ ;
                   1507: 
1.110     pazsan   1508: \g compiler
                   1509: 
1.138     pazsan   1510: \+f83headerstring
                   1511: 
                   1512: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1513: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1514:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1515:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1516:     break;
                   1517: f83name2=f83name1;
                   1518: :
                   1519:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1520:        >r 2dup r@ cell+ char+ capscomp  0=
                   1521:        IF  2drop r>  EXIT  THEN
                   1522:        r> @
                   1523:     REPEAT  THEN  nip nip ;
                   1524: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1525:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1526: : capscomp ( c_addr1 u c_addr2 -- n )
                   1527:  swap bounds
                   1528:  ?DO  dup c@ I c@ <>
                   1529:      IF  dup c@ toupper I c@ toupper =
                   1530:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1531:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1532: : sgn ( n -- -1/0/1 )
                   1533:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1534: 
                   1535: \-
                   1536: 
1.112     pazsan   1537: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1538: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1539: :
1.112     pazsan   1540:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1541:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1542:        IF  2drop r>  EXIT  THEN
                   1543:        r> @
                   1544:     REPEAT  THEN  nip nip ;
1.112     pazsan   1545: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1546:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   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+ ;
1.1       anton    1555: 
1.15      pazsan   1556: \+hash
1.1       anton    1557: 
1.112     pazsan   1558: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1559: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1560: :
                   1561:  BEGIN  dup  WHILE
1.112     pazsan   1562:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1563:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1564:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1565:        rdrop r>
                   1566:  REPEAT nip nip ;
                   1567: 
1.112     pazsan   1568: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1569: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1570: longname2 = tablelfind(c_addr, u, a_addr);
1.1       anton    1571: :
                   1572:  BEGIN  dup  WHILE
1.112     pazsan   1573:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1574:         IF  2dup r@ cell+ cell+ -text 0=
1.1       anton    1575:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1576:        rdrop r>
                   1577:  REPEAT nip nip ;
1.138     pazsan   1578: : -text ( c_addr1 u c_addr2 -- n )
                   1579:  swap bounds
                   1580:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1581:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1582: : sgn ( n -- -1/0/1 )
                   1583:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1584: 
1.47      anton    1585: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1586: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1587: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1588: :
                   1589:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1590:  tuck - 2swap r> 0 2swap bounds
                   1591:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1592:       I c@ toupper xor
                   1593:       over and  LOOP
                   1594:  nip nip nip ;
                   1595: Create rot-values
                   1596:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1597:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1598:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1599:   7 c, 5 c, 5 c,
1.138     pazsan   1600: 
                   1601: \+
1.1       anton    1602: 
1.15      pazsan   1603: \+
1.1       anton    1604: 
1.47      anton    1605: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1606: struct Cellpair r=parse_white(c_addr1, u1);
                   1607: c_addr2 = (Char *)(r.n1);
                   1608: u2 = r.n2;
1.1       anton    1609: :
                   1610:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1611:  REPEAT  THEN  2dup
                   1612:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1613:  REPEAT  THEN  nip - ;
                   1614: 
1.47      anton    1615: aligned        ( c_addr -- a_addr )    core
1.29      crook    1616: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1617: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1618: :
                   1619:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1620: 
1.47      anton    1621: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1622: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1623: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1624: :
                   1625:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1626: 
1.35      jwilke   1627: \ threading stuff is currently only interesting if we have a compiler
                   1628: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1629: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1630: ""0 if the engine is direct threaded. Note that this may change during
                   1631: the lifetime of an image.""
                   1632: #if defined(DOUBLY_INDIRECT)
                   1633: n=2;
                   1634: #else
                   1635: # if defined(DIRECT_THREADED)
                   1636: n=0;
                   1637: # else
                   1638: n=1;
                   1639: # endif
                   1640: #endif
                   1641: :
                   1642:  1 ;
1.28      jwilke   1643: 
1.35      jwilke   1644: \f[THEN]
1.1       anton    1645: 
1.83      pazsan   1646: \g hostos
                   1647: 
1.47      anton    1648: key-file       ( wfileid -- n )                gforth  paren_key_file
1.17      pazsan   1649: #ifdef HAS_FILE
1.1       anton    1650: fflush(stdout);
1.12      pazsan   1651: n = key((FILE*)wfileid);
1.17      pazsan   1652: #else
                   1653: n = key(stdin);
                   1654: #endif
1.1       anton    1655: 
1.47      anton    1656: key?-file      ( wfileid -- n )                facility        key_q_file
1.17      pazsan   1657: #ifdef HAS_FILE
1.1       anton    1658: fflush(stdout);
1.12      pazsan   1659: n = key_query((FILE*)wfileid);
1.17      pazsan   1660: #else
                   1661: n = key_query(stdin);
                   1662: #endif
                   1663: 
                   1664: \+os
1.12      pazsan   1665: 
1.47      anton    1666: stdin  ( -- wfileid )  gforth
1.12      pazsan   1667: wfileid = (Cell)stdin;
1.1       anton    1668: 
1.47      anton    1669: stdout ( -- wfileid )  gforth
1.1       anton    1670: wfileid = (Cell)stdout;
                   1671: 
1.47      anton    1672: stderr ( -- wfileid )  gforth
1.1       anton    1673: wfileid = (Cell)stderr;
                   1674: 
1.47      anton    1675: form   ( -- urows ucols )      gforth
1.1       anton    1676: ""The number of lines and columns in the terminal. These numbers may change
                   1677: with the window size.""
                   1678: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1679:  think this is necessary or always beneficial */
                   1680: urows=rows;
                   1681: ucols=cols;
                   1682: 
1.47      anton    1683: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1684: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1685: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1686: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1687: automatically. Caveat: @code{flush-icache} might not work on your
                   1688: installation; this is usually the case if direct threading is not
                   1689: supported on your machine (take a look at your @file{machine.h}) and
                   1690: your machine has a separate instruction cache. In such cases,
                   1691: @code{flush-icache} does nothing instead of flushing the instruction
                   1692: cache.""
                   1693: FLUSH_ICACHE(c_addr,u);
                   1694: 
1.47      anton    1695: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1696: SUPER_END;
1.1       anton    1697: return (Label *)n;
                   1698: 
1.125     anton    1699: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.155     anton    1700: wretval = gforth_system(c_addr, u);  
1.1       anton    1701: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
                   1702: 
1.47      anton    1703: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1704: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1705: is the host operating system's expansion of that environment variable. If the
1.29      crook    1706: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1707: in length.""
1.46      pazsan   1708: /* close ' to keep fontify happy */
1.1       anton    1709: c_addr2 = getenv(cstr(c_addr1,u1,1));
                   1710: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
                   1711: 
1.56      anton    1712: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1713: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1714: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1715: 
1.47      anton    1716: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1717: wretval = pclose((FILE *)wfileid);
                   1718: wior = IOR(wretval==-1);
                   1719: 
1.47      anton    1720: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1721: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1722: Months are numbered from 1.""
1.127     anton    1723: #if 1
                   1724: time_t now;
                   1725: struct tm *ltime;
                   1726: time(&now);
                   1727: ltime=localtime(&now);
                   1728: #else
1.1       anton    1729: struct timeval time1;
                   1730: struct timezone zone1;
                   1731: struct tm *ltime;
                   1732: gettimeofday(&time1,&zone1);
1.51      anton    1733: /* !! Single Unix specification: 
                   1734:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1735: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1736: #endif
1.1       anton    1737: nyear =ltime->tm_year+1900;
                   1738: nmonth=ltime->tm_mon+1;
                   1739: nday  =ltime->tm_mday;
                   1740: nhour =ltime->tm_hour;
                   1741: nmin  =ltime->tm_min;
                   1742: nsec  =ltime->tm_sec;
                   1743: 
1.47      anton    1744: ms     ( n -- )        facility-ext
1.44      crook    1745: ""Wait at least @i{n} milli-second.""
1.1       anton    1746: struct timeval timeout;
                   1747: timeout.tv_sec=n/1000;
                   1748: timeout.tv_usec=1000*(n%1000);
                   1749: (void)select(0,0,0,0,&timeout);
                   1750: 
1.47      anton    1751: allocate       ( u -- a_addr wior )    memory
1.29      crook    1752: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1753: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1754: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1755: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1756: is a non-zero I/O result code.""
1.1       anton    1757: a_addr = (Cell *)malloc(u?u:1);
                   1758: wior = IOR(a_addr==NULL);
                   1759: 
1.47      anton    1760: free   ( a_addr -- wior )              memory
1.29      crook    1761: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1762: The region must originally have been obtained using @code{allocate} or
1.29      crook    1763: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1764: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1765: free(a_addr);
                   1766: wior = 0;
                   1767: 
1.47      anton    1768: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1769: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1770: address units, possibly moving the contents to a different
1.27      crook    1771: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1772: If the operation is successful, @i{wior} is 0.
                   1773: If the operation fails, @i{wior} is a non-zero
1.29      crook    1774: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1775: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1776: /* the following check is not necessary on most OSs, but it is needed
                   1777:    on SunOS 4.1.2. */
1.46      pazsan   1778: /* close ' to keep fontify happy */
1.1       anton    1779: if (a_addr1==NULL)
                   1780:   a_addr2 = (Cell *)malloc(u);
                   1781: else
                   1782:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1783: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1784: 
1.47      anton    1785: strerror       ( n -- c_addr u )       gforth
1.1       anton    1786: c_addr = strerror(n);
                   1787: u = strlen(c_addr);
                   1788: 
1.47      anton    1789: strsignal      ( n -- c_addr u )       gforth
1.133     anton    1790: c_addr = (Address)strsignal(n);
1.1       anton    1791: u = strlen(c_addr);
                   1792: 
1.47      anton    1793: call-c ( w -- )        gforth  call_c
1.1       anton    1794: ""Call the C function pointed to by @i{w}. The C function has to
                   1795: access the stack itself. The stack pointers are exported in the global
                   1796: variables @code{SP} and @code{FP}.""
                   1797: /* This is a first attempt at support for calls to C. This may change in
                   1798:    the future */
1.64      anton    1799: IF_fpTOS(fp[0]=fpTOS);
1.1       anton    1800: FP=fp;
                   1801: SP=sp;
                   1802: ((void (*)())w)();
                   1803: sp=SP;
                   1804: fp=FP;
1.64      anton    1805: IF_spTOS(spTOS=sp[0]);
                   1806: IF_fpTOS(fpTOS=fp[0]);
1.1       anton    1807: 
1.15      pazsan   1808: \+
                   1809: \+file
1.1       anton    1810: 
1.47      anton    1811: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1812: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1813: 
1.56      anton    1814: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1815: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1816: wior =  IOR(wfileid == 0);
1.1       anton    1817: 
1.56      anton    1818: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1819: Cell   fd;
1.56      anton    1820: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1821: if (fd != -1) {
1.56      anton    1822:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1823:   wior = IOR(wfileid == 0);
1.1       anton    1824: } else {
1.22      crook    1825:   wfileid = 0;
1.1       anton    1826:   wior = IOR(1);
                   1827: }
                   1828: 
1.47      anton    1829: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1830: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1831: 
1.47      anton    1832: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1833: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1834: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1835: 
1.47      anton    1836: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1837: /* !! use tell and lseek? */
1.108     anton    1838: ud = OFF2UD(ftello((FILE *)wfileid));
                   1839: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1840: 
1.47      anton    1841: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1842: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1843: 
1.47      anton    1844: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1845: struct stat buf;
                   1846: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1847: ud = OFF2UD(buf.st_size);
1.1       anton    1848: 
1.47      anton    1849: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1850: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1851: 
1.47      anton    1852: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1853: /* !! fread does not guarantee enough */
                   1854: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1855: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1856: /* !! is the value of ferror errno-compatible? */
                   1857: if (wior)
                   1858:   clearerr((FILE *)wfileid);
                   1859: 
1.125     anton    1860: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1861: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1862: u2   = r.n1;
                   1863: flag = r.n2;
                   1864: u3   = r.n3;
                   1865: wior = r.n4;
1.1       anton    1866: 
1.15      pazsan   1867: \+
1.1       anton    1868: 
1.47      anton    1869: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1870: /* !! fwrite does not guarantee enough */
1.39      pazsan   1871: #ifdef HAS_FILE
1.1       anton    1872: {
                   1873:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1874:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1875:   if (wior)
                   1876:     clearerr((FILE *)wfileid);
                   1877: }
1.39      pazsan   1878: #else
                   1879: TYPE(c_addr, u1);
                   1880: #endif
1.17      pazsan   1881: 
1.47      anton    1882: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1883: #ifdef HAS_FILE
1.1       anton    1884: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1885: if (wior)
                   1886:   clearerr((FILE *)wfileid);
1.17      pazsan   1887: #else
1.36      pazsan   1888: PUTC(c);
1.17      pazsan   1889: #endif
1.1       anton    1890: 
1.15      pazsan   1891: \+file
1.1       anton    1892: 
1.47      anton    1893: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1894: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1895: 
1.56      anton    1896: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1897: struct Cellpair r = file_status(c_addr, u);
                   1898: wfam = r.n1;
                   1899: wior = r.n2;
1.1       anton    1900: 
1.112     pazsan   1901: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1902: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1903: 
1.112     pazsan   1904: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1905: ""Open the directory specified by @i{c-addr, u}
                   1906: and return @i{dir-id} for futher access to it.""
                   1907: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1908: wior =  IOR(wdirid == 0);
                   1909: 
                   1910: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1911: ""Attempt to read the next entry from the directory specified
                   1912: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1913: If the attempt fails because there is no more entries,
                   1914: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1915: If the attempt to read the next entry fails because of any other reason, 
                   1916: return @i{ior}<>0.
                   1917: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1918: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1919: If the length of the file name is greater than @i{u1}, 
                   1920: store first @i{u1} characters from file name into the buffer and
                   1921: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1922: struct dirent * dent;
                   1923: dent = readdir((DIR *)wdirid);
                   1924: wior = 0;
                   1925: flag = -1;
                   1926: if(dent == NULL) {
                   1927:   u2 = 0;
                   1928:   flag = 0;
                   1929: } else {
                   1930:   u2 = strlen(dent->d_name);
                   1931:   if(u2 > u1) {
                   1932:     u2 = u1;
                   1933:     wior = -512-ENAMETOOLONG;
                   1934:   }
                   1935:   memmove(c_addr, dent->d_name, u2);
                   1936: }
                   1937: 
                   1938: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1939: ""Close the directory specified by @i{dir-id}.""
                   1940: wior = IOR(closedir((DIR *)wdirid));
                   1941: 
                   1942: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1943: char * string = cstr(c_addr1, u1, 1);
                   1944: char * pattern = cstr(c_addr2, u2, 0);
                   1945: flag = FLAG(!fnmatch(pattern, string, 0));
                   1946: 
1.157     pazsan   1947: set-dir        ( c_addr u -- wior )    gforth set_dir
                   1948: ""Change the current directory to @i{c-addr, u}.
                   1949: Return an error if this is not possible""
                   1950: wior = IOR(chdir(tilde_cstr(c_addr, u, 1)));
                   1951: 
                   1952: get-dir        ( c_addr1 u1 -- c_addr2 u2 )    gforth get_dir
                   1953: ""Store the current directory in the buffer specified by @{c-addr1, u1}.
                   1954: If the buffer size is not sufficient, return 0 0""
                   1955: c_addr2 = getcwd(c_addr1, u1);
                   1956: if(c_addr2 != NULL) {
                   1957:   u2 = strlen(c_addr2);
                   1958: } else {
                   1959:   u2 = 0;
                   1960: }
                   1961: 
1.112     pazsan   1962: \+
                   1963: 
                   1964: newline        ( -- c_addr u ) gforth
                   1965: ""String containing the newline sequence of the host OS""
                   1966: char newline[] = {
1.115     anton    1967: #if DIRSEP=='/'
                   1968: /* Unix */
1.112     pazsan   1969: '\n'
                   1970: #else
1.115     anton    1971: /* DOS, Win, OS/2 */
1.112     pazsan   1972: '\r','\n'
                   1973: #endif
                   1974: };
                   1975: c_addr=newline;
                   1976: u=sizeof(newline);
                   1977: :
                   1978:  "newline count ;
                   1979: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   1980: 
                   1981: \+os
                   1982: 
                   1983: utime  ( -- dtime )    gforth
                   1984: ""Report the current time in microseconds since some epoch.""
                   1985: struct timeval time1;
                   1986: gettimeofday(&time1,NULL);
                   1987: dtime = timeval2us(&time1);
                   1988: 
                   1989: cputime ( -- duser dsystem ) gforth
                   1990: ""duser and dsystem are the respective user- and system-level CPU
                   1991: times used since the start of the Forth system (excluding child
                   1992: processes), in microseconds (the granularity may be much larger,
                   1993: however).  On platforms without the getrusage call, it reports elapsed
                   1994: time (since some epoch) for duser and 0 for dsystem.""
                   1995: #ifdef HAVE_GETRUSAGE
                   1996: struct rusage usage;
                   1997: getrusage(RUSAGE_SELF, &usage);
                   1998: duser = timeval2us(&usage.ru_utime);
                   1999: dsystem = timeval2us(&usage.ru_stime);
                   2000: #else
                   2001: struct timeval time1;
                   2002: gettimeofday(&time1,NULL);
                   2003: duser = timeval2us(&time1);
1.158     pazsan   2004: dsystem = DZERO;
1.112     pazsan   2005: #endif
                   2006: 
                   2007: \+
                   2008: 
                   2009: \+floating
                   2010: 
                   2011: \g floating
1.83      pazsan   2012: 
1.1       anton    2013: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   2014: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   2015: 
1.47      anton    2016: d>f    ( d -- r )              float   d_to_f
1.158     pazsan   2017: #ifdef BUGGY_LL_D2F
1.1       anton    2018: extern double ldexp(double x, int exp);
1.158     pazsan   2019: if (DHI(d)<0) {
                   2020: #ifdef BUGGY_LL_ADD
1.113     anton    2021:   DCell d2=dnegate(d);
1.158     pazsan   2022: #else
                   2023:   DCell d2=-d;
                   2024: #endif
                   2025:   r = -(ldexp((Float)DHI(d2),CELL_BITS) + (Float)DLO(d2));
1.113     anton    2026: } else
1.158     pazsan   2027:   r = ldexp((Float)DHI(d),CELL_BITS) + (Float)DLO(d);
1.1       anton    2028: #else
                   2029: r = d;
                   2030: #endif
                   2031: 
1.47      anton    2032: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   2033: extern DCell double2ll(Float r);
                   2034: d = double2ll(r);
1.1       anton    2035: 
1.47      anton    2036: f!     ( r f_addr -- ) float   f_store
1.52      anton    2037: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    2038: *f_addr = r;
                   2039: 
1.47      anton    2040: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    2041: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    2042: r = *f_addr;
                   2043: 
1.47      anton    2044: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    2045: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    2046: #ifdef IEEE_FP
                   2047: r = *df_addr;
                   2048: #else
                   2049: !! df@
                   2050: #endif
                   2051: 
1.47      anton    2052: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    2053: ""Store @i{r} as double-precision IEEE floating-point value to the
                   2054: address @i{df-addr}.""
1.1       anton    2055: #ifdef IEEE_FP
                   2056: *df_addr = r;
                   2057: #else
                   2058: !! df!
                   2059: #endif
                   2060: 
1.47      anton    2061: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    2062: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    2063: #ifdef IEEE_FP
                   2064: r = *sf_addr;
                   2065: #else
                   2066: !! sf@
                   2067: #endif
                   2068: 
1.47      anton    2069: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    2070: ""Store @i{r} as single-precision IEEE floating-point value to the
                   2071: address @i{sf-addr}.""
1.1       anton    2072: #ifdef IEEE_FP
                   2073: *sf_addr = r;
                   2074: #else
                   2075: !! sf!
                   2076: #endif
                   2077: 
1.47      anton    2078: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    2079: r3 = r1+r2;
                   2080: 
1.47      anton    2081: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    2082: r3 = r1-r2;
                   2083: 
1.47      anton    2084: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    2085: r3 = r1*r2;
                   2086: 
1.47      anton    2087: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    2088: r3 = r1/r2;
                   2089: 
1.47      anton    2090: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    2091: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    2092: r3 = pow(r1,r2);
                   2093: 
1.47      anton    2094: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    2095: r2 = - r1;
                   2096: 
1.47      anton    2097: fdrop  ( r -- )                float   f_drop
1.1       anton    2098: 
1.47      anton    2099: fdup   ( r -- r r )    float   f_dupe
1.1       anton    2100: 
1.47      anton    2101: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    2102: 
1.47      anton    2103: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    2104: 
1.47      anton    2105: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    2106: 
1.47      anton    2107: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    2108: 
1.47      anton    2109: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    2110: 
1.47      anton    2111: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    2112: ""@code{1 floats +}.""
1.1       anton    2113: f_addr2 = f_addr1+1;
                   2114: 
1.47      anton    2115: floats ( n1 -- n2 )    float
1.52      anton    2116: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    2117: n2 = n1*sizeof(Float);
                   2118: 
1.47      anton    2119: floor  ( r1 -- r2 )    float
1.26      crook    2120: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    2121: /* !! unclear wording */
                   2122: r2 = floor(r1);
                   2123: 
1.105     anton    2124: fround ( r1 -- r2 )    gforth  f_round
                   2125: ""Round to the nearest integral value.""
1.1       anton    2126: r2 = rint(r1);
                   2127: 
1.47      anton    2128: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    2129: if (r1<r2)
                   2130:   r3 = r2;
                   2131: else
                   2132:   r3 = r1;
                   2133: 
1.47      anton    2134: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    2135: if (r1<r2)
                   2136:   r3 = r1;
                   2137: else
                   2138:   r3 = r2;
                   2139: 
1.47      anton    2140: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    2141: char *sig;
1.122     anton    2142: size_t siglen;
1.1       anton    2143: int flag;
                   2144: int decpt;
                   2145: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    2146: n=(r==0. ? 1 : decpt);
1.1       anton    2147: f1=FLAG(flag!=0);
1.21      anton    2148: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.122     anton    2149: siglen=strlen(sig);
1.124     anton    2150: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2151:   siglen=u;
1.170     anton    2152: if (!f2) /* workaround Cygwin trailing 0s for Inf and Nan */
                   2153:   for (; sig[siglen-1]=='0'; siglen--);
                   2154:     ;
1.122     anton    2155: memcpy(c_addr,sig,siglen);
1.123     anton    2156: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2157: 
1.47      anton    2158: >float ( c_addr u -- flag )    float   to_float
1.56      anton    2159: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2160: character string @i{c-addr u} to internal floating-point
                   2161: representation. If the string represents a valid floating-point number
                   2162: @i{r} is placed on the floating-point stack and @i{flag} is
                   2163: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2164: case and represents the floating-point number 0.""
1.1       anton    2165: Float r;
1.125     anton    2166: flag = to_float(c_addr, u, &r);
                   2167: if (flag) {
                   2168:   IF_fpTOS(fp[0] = fpTOS);
                   2169:   fp += -1;
                   2170:   fpTOS = r;
1.1       anton    2171: }
                   2172: 
1.47      anton    2173: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2174: r2 = fabs(r1);
                   2175: 
1.47      anton    2176: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2177: r2 = acos(r1);
                   2178: 
1.47      anton    2179: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2180: r2 = asin(r1);
                   2181: 
1.47      anton    2182: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2183: r2 = atan(r1);
                   2184: 
1.47      anton    2185: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2186: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2187: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2188: r3 = atan2(r1,r2);
                   2189: 
1.47      anton    2190: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2191: r2 = cos(r1);
                   2192: 
1.47      anton    2193: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2194: r2 = exp(r1);
                   2195: 
1.47      anton    2196: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2197: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2198: #ifdef HAVE_EXPM1
1.3       pazsan   2199: extern double
                   2200: #ifdef NeXT
                   2201:               const
                   2202: #endif
                   2203:                     expm1(double);
1.1       anton    2204: r2 = expm1(r1);
                   2205: #else
                   2206: r2 = exp(r1)-1.;
                   2207: #endif
                   2208: 
1.47      anton    2209: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2210: r2 = log(r1);
                   2211: 
1.47      anton    2212: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2213: ""@i{r2}=ln(@i{r1}+1)""
                   2214: #ifdef HAVE_LOG1P
1.3       pazsan   2215: extern double
                   2216: #ifdef NeXT
                   2217:               const
                   2218: #endif
                   2219:                     log1p(double);
1.1       anton    2220: r2 = log1p(r1);
                   2221: #else
                   2222: r2 = log(r1+1.);
                   2223: #endif
                   2224: 
1.47      anton    2225: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2226: ""The decimal logarithm.""
1.1       anton    2227: r2 = log10(r1);
                   2228: 
1.47      anton    2229: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2230: ""@i{r2}=10**@i{r1}""
                   2231: extern double pow10(double);
                   2232: r2 = pow10(r1);
                   2233: 
1.47      anton    2234: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2235: r2 = sin(r1);
                   2236: 
1.47      anton    2237: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2238: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2239: r2 = sin(r1);
                   2240: r3 = cos(r1);
                   2241: 
1.47      anton    2242: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2243: r2 = sqrt(r1);
                   2244: 
1.47      anton    2245: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2246: r2 = tan(r1);
                   2247: :
                   2248:  fsincos f/ ;
                   2249: 
1.47      anton    2250: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2251: r2 = sinh(r1);
                   2252: :
                   2253:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2254: 
1.47      anton    2255: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2256: r2 = cosh(r1);
                   2257: :
                   2258:  fexp fdup 1/f f+ f2/ ;
                   2259: 
1.47      anton    2260: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2261: r2 = tanh(r1);
                   2262: :
                   2263:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2264: 
1.47      anton    2265: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2266: r2 = asinh(r1);
                   2267: :
                   2268:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2269: 
1.47      anton    2270: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2271: r2 = acosh(r1);
                   2272: :
                   2273:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2274: 
1.47      anton    2275: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2276: r2 = atanh(r1);
                   2277: :
                   2278:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2279:  r> IF  fnegate  THEN ;
                   2280: 
1.47      anton    2281: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2282: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2283: single-precision IEEE floating-point numbers.""
1.1       anton    2284: n2 = n1*sizeof(SFloat);
                   2285: 
1.47      anton    2286: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2287: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2288: double-precision IEEE floating-point numbers.""
1.1       anton    2289: n2 = n1*sizeof(DFloat);
                   2290: 
1.47      anton    2291: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2292: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2293: than or equal to @i{c-addr}.""
1.1       anton    2294: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2295: :
                   2296:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2297: 
1.47      anton    2298: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2299: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2300: than or equal to @i{c-addr}.""
1.1       anton    2301: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2302: :
                   2303:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2304: 
1.112     pazsan   2305: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2306: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2307: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2308: ucount elements.""
1.125     anton    2309: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2310: :
                   2311:  >r swap 2swap swap 0e r> 0 ?DO
                   2312:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2313:  LOOP 2drop 2drop ; 
                   2314: 
                   2315: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2316: ""vy=ra*vx+vy""
1.125     anton    2317: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2318: :
                   2319:  >r swap 2swap swap r> 0 ?DO
                   2320:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2321:  LOOP 2drop 2drop fdrop ;
                   2322: 
                   2323: \+
                   2324: 
1.1       anton    2325: \ The following words access machine/OS/installation-dependent
                   2326: \   Gforth internals
                   2327: \ !! how about environmental queries DIRECT-THREADED,
                   2328: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2329: 
                   2330: \ local variable implementation primitives
1.112     pazsan   2331: 
1.15      pazsan   2332: \+glocals
1.1       anton    2333: 
1.110     pazsan   2334: \g locals
                   2335: 
1.68      anton    2336: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2337: w = *(Cell *)(lp+noffset);
1.1       anton    2338: 
1.47      anton    2339: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2340: w = ((Cell *)lp)[0];
1.1       anton    2341: 
1.47      anton    2342: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2343: w = ((Cell *)lp)[1];
1.1       anton    2344: 
1.47      anton    2345: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2346: w = ((Cell *)lp)[2];
1.1       anton    2347: 
1.47      anton    2348: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2349: w = ((Cell *)lp)[3];
1.1       anton    2350: 
1.15      pazsan   2351: \+floating
1.1       anton    2352: 
1.68      anton    2353: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2354: r = *(Float *)(lp+noffset);
1.1       anton    2355: 
1.47      anton    2356: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2357: r = ((Float *)lp)[0];
1.1       anton    2358: 
1.47      anton    2359: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2360: r = ((Float *)lp)[1];
1.1       anton    2361: 
1.15      pazsan   2362: \+
1.1       anton    2363: 
1.68      anton    2364: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2365: /* this can also be used to implement lp@ */
1.68      anton    2366: c_addr = (Char *)(lp+noffset);
1.1       anton    2367: 
1.68      anton    2368: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2369: ""used with negative immediate values it allocates memory on the
                   2370: local stack, a positive immediate argument drops memory from the local
                   2371: stack""
1.68      anton    2372: lp += noffset;
1.1       anton    2373: 
1.47      anton    2374: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2375: lp += -sizeof(Cell);
                   2376: 
1.47      anton    2377: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2378: lp += sizeof(Float);
                   2379: 
1.47      anton    2380: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2381: lp += 2*sizeof(Float);
                   2382: 
1.47      anton    2383: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2384: lp = (Address)c_addr;
                   2385: 
1.47      anton    2386: >l     ( w -- )        gforth  to_l
1.1       anton    2387: lp -= sizeof(Cell);
                   2388: *(Cell *)lp = w;
                   2389: 
1.15      pazsan   2390: \+floating
1.1       anton    2391: 
1.47      anton    2392: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2393: lp -= sizeof(Float);
                   2394: *(Float *)lp = r;
                   2395: 
1.47      anton    2396: fpick  ( u -- r )              gforth
1.52      anton    2397: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11      anton    2398: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
                   2399: :
                   2400:  floats fp@ + f@ ;
                   2401: 
1.15      pazsan   2402: \+
                   2403: \+
1.1       anton    2404: 
1.15      pazsan   2405: \+OS
1.1       anton    2406: 
1.110     pazsan   2407: \g syslib
                   2408: 
1.131     pazsan   2409: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2410: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2411: #ifndef RTLD_GLOBAL
                   2412: #define RTLD_GLOBAL 0
                   2413: #endif
                   2414: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2415: #else
                   2416: #  ifdef _WIN32
                   2417: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2418: #  else
                   2419: #warning Define open-lib!
                   2420: u2 = 0;
                   2421: #  endif
                   2422: #endif
                   2423: 
                   2424: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2425: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2426: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2427: #else
                   2428: #  ifdef _WIN32
                   2429: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2430: #  else
                   2431: #warning Define lib-sym!
                   2432: u3 = 0;
                   2433: #  endif
                   2434: #endif
                   2435: 
1.142     pazsan   2436: wcall  ( u -- )        gforth
                   2437: IF_fpTOS(fp[0]=fpTOS);
                   2438: FP=fp;
                   2439: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
                   2440: fp=FP;
                   2441: IF_spTOS(spTOS=sp[0];)
                   2442: IF_fpTOS(fpTOS=fp[0]);
                   2443: 
1.131     pazsan   2444: \+FFCALL
                   2445: 
1.136     pazsan   2446: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2447: av_start_void(alist, c_addr);
                   2448: 
1.136     pazsan   2449: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2450: av_start_int(alist, c_addr, &irv);
                   2451: 
1.136     pazsan   2452: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2453: av_start_float(alist, c_addr, &frv);
                   2454: 
1.136     pazsan   2455: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2456: av_start_double(alist, c_addr, &drv);
                   2457: 
1.136     pazsan   2458: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2459: av_start_longlong(alist, c_addr, &llrv);
                   2460: 
1.136     pazsan   2461: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2462: av_start_ptr(alist, c_addr, void*, &prv);
                   2463: 
                   2464: av-int  ( w -- )  gforth  av_int
                   2465: av_int(alist, w);
                   2466: 
1.136     pazsan   2467: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2468: av_float(alist, r);
                   2469: 
1.136     pazsan   2470: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2471: av_double(alist, r);
                   2472: 
1.136     pazsan   2473: av-longlong    ( d -- )        gforth  av_longlong
1.158     pazsan   2474: #ifdef BUGGY_LL_SIZE
                   2475: av_longlong(alist, DLO(d));
1.151     pazsan   2476: #else
1.131     pazsan   2477: av_longlong(alist, d);
1.151     pazsan   2478: #endif
1.131     pazsan   2479: 
1.136     pazsan   2480: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2481: av_ptr(alist, void*, c_addr);
                   2482: 
1.136     pazsan   2483: av-int-r  ( R:w -- )  gforth  av_int_r
                   2484: av_int(alist, w);
                   2485: 
                   2486: av-float-r     ( -- )  gforth  av_float_r
                   2487: float r = *(Float*)lp;
                   2488: lp += sizeof(Float);
                   2489: av_float(alist, r);
                   2490: 
                   2491: av-double-r    ( -- )  gforth  av_double_r
                   2492: double r = *(Float*)lp;
                   2493: lp += sizeof(Float);
                   2494: av_double(alist, r);
                   2495: 
                   2496: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
1.158     pazsan   2497: #ifdef BUGGY_LL_SIZE
                   2498: av_longlong(alist, DLO(d));
1.151     pazsan   2499: #else
1.136     pazsan   2500: av_longlong(alist, d);
1.151     pazsan   2501: #endif
1.136     pazsan   2502: 
                   2503: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2504: av_ptr(alist, void*, c_addr);
                   2505: 
                   2506: av-call-void   ( -- )  gforth  av_call_void
1.131     pazsan   2507: SAVE_REGS
                   2508: av_call(alist);
                   2509: REST_REGS
                   2510: 
1.136     pazsan   2511: av-call-int    ( -- w )        gforth  av_call_int
1.131     pazsan   2512: SAVE_REGS
                   2513: av_call(alist);
1.134     pazsan   2514: REST_REGS
1.131     pazsan   2515: w = irv;
                   2516: 
1.136     pazsan   2517: av-call-float  ( -- r )        gforth  av_call_float
1.131     pazsan   2518: SAVE_REGS
                   2519: av_call(alist);
                   2520: REST_REGS
                   2521: r = frv;
                   2522: 
1.136     pazsan   2523: av-call-double ( -- r )        gforth  av_call_double
1.131     pazsan   2524: SAVE_REGS
                   2525: av_call(alist);
                   2526: REST_REGS
                   2527: r = drv;
                   2528: 
1.136     pazsan   2529: av-call-longlong       ( -- d )        gforth  av_call_longlong
1.131     pazsan   2530: SAVE_REGS
                   2531: av_call(alist);
                   2532: REST_REGS
1.151     pazsan   2533: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2534: DLO_IS(d, llrv);
                   2535: DHI_IS(d, 0);
1.152     pazsan   2536: #else
                   2537: d = llrv;
1.151     pazsan   2538: #endif
1.131     pazsan   2539: 
1.136     pazsan   2540: av-call-ptr    ( -- c_addr )   gforth  av_call_ptr
1.131     pazsan   2541: SAVE_REGS
                   2542: av_call(alist);
                   2543: REST_REGS
                   2544: c_addr = prv;
                   2545: 
1.135     pazsan   2546: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
                   2547: c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
1.131     pazsan   2548: 
1.135     pazsan   2549: va-start-void  ( -- )  gforth  va_start_void
                   2550: va_start_void(clist);
1.131     pazsan   2551: 
1.135     pazsan   2552: va-start-int   ( -- )  gforth  va_start_int
                   2553: va_start_int(clist);
1.131     pazsan   2554: 
1.135     pazsan   2555: va-start-longlong      ( -- )  gforth  va_start_longlong
                   2556: va_start_longlong(clist);
1.131     pazsan   2557: 
1.135     pazsan   2558: va-start-ptr   ( -- )  gforth  va_start_ptr
                   2559: va_start_ptr(clist, (char *));
1.131     pazsan   2560: 
1.135     pazsan   2561: va-start-float ( -- )  gforth  va_start_float
                   2562: va_start_float(clist);
                   2563: 
                   2564: va-start-double        ( -- )  gforth  va_start_double
                   2565: va_start_double(clist);
                   2566: 
                   2567: va-arg-int     ( -- w )        gforth  va_arg_int
                   2568: w = va_arg_int(clist);
                   2569: 
                   2570: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
1.151     pazsan   2571: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2572: DLO_IS(d, va_arg_longlong(clist));
                   2573: DHI_IS(d, 0);
1.151     pazsan   2574: #else
1.135     pazsan   2575: d = va_arg_longlong(clist);
1.151     pazsan   2576: #endif
1.135     pazsan   2577: 
                   2578: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
                   2579: c_addr = (char *)va_arg_ptr(clist,char*);
                   2580: 
                   2581: va-arg-float   ( -- r )        gforth  va_arg_float
                   2582: r = va_arg_float(clist);
                   2583: 
                   2584: va-arg-double  ( -- r )        gforth  va_arg_double
                   2585: r = va_arg_double(clist);
1.131     pazsan   2586: 
                   2587: va-return-void ( -- )  gforth va_return_void
                   2588: va_return_void(clist);
                   2589: return 0;
                   2590: 
                   2591: va-return-int ( w -- ) gforth va_return_int
                   2592: va_return_int(clist, w);
                   2593: return 0;
                   2594: 
                   2595: va-return-ptr ( c_addr -- )    gforth va_return_ptr
                   2596: va_return_ptr(clist, void *, c_addr);
                   2597: return 0;
                   2598: 
                   2599: va-return-longlong ( d -- )    gforth va_return_longlong
1.151     pazsan   2600: #ifdef BUGGY_LONG_LONG
                   2601: va_return_longlong(clist, d.lo);
                   2602: #else
1.131     pazsan   2603: va_return_longlong(clist, d);
1.151     pazsan   2604: #endif
1.131     pazsan   2605: return 0;
                   2606: 
                   2607: va-return-float ( r -- )       gforth va_return_float
                   2608: va_return_float(clist, r);
                   2609: return 0;
                   2610: 
                   2611: va-return-double ( r -- )      gforth va_return_double
                   2612: va_return_double(clist, r);
                   2613: return 0;
                   2614: 
1.142     pazsan   2615: \+
                   2616: 
                   2617: \+OLDCALL
1.131     pazsan   2618: 
1.1       anton    2619: define(`uploop',
                   2620:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2621: define(`_uploop',
                   2622:        `ifelse($1, `$3', `$5',
                   2623:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2624: \ argflist(argnum): Forth argument list
                   2625: define(argflist,
                   2626:        `ifelse($1, 0, `',
                   2627:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2628: \ argdlist(argnum): declare C's arguments
                   2629: define(argdlist,
                   2630:        `ifelse($1, 0, `',
                   2631:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2632: \ argclist(argnum): pass C's arguments
                   2633: define(argclist,
                   2634:        `ifelse($1, 0, `',
                   2635:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2636: \ icall(argnum)
                   2637: define(icall,
1.47      anton    2638: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2639: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2640: 
                   2641: ')
                   2642: define(fcall,
1.47      anton    2643: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2644: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2645: 
                   2646: ')
                   2647: 
1.46      pazsan   2648: \ close ' to keep fontify happy
1.1       anton    2649: 
                   2650: uploop(i, 0, 7, `icall(i)')
                   2651: icall(20)
                   2652: uploop(i, 0, 7, `fcall(i)')
                   2653: fcall(20)
                   2654: 
1.15      pazsan   2655: \+
1.131     pazsan   2656: \+
1.1       anton    2657: 
1.142     pazsan   2658: \g peephole
1.46      pazsan   2659: 
1.112     pazsan   2660: \+peephole
                   2661: 
1.119     anton    2662: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2663: ""compile prim (incl. immargs) at @var{a_prim}""
                   2664: compile_prim1(a_prim);
                   2665: 
                   2666: finish-code ( -- ) gforth finish_code
                   2667: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2668: flushing).""
1.149     anton    2669: IF_spTOS(sp[0]=spTOS); /* workaround for failing to save spTOS
                   2670:                          (gcc-2.95.1, gforth-fast --enable-force-reg) */
1.119     anton    2671: finish_code();
1.149     anton    2672: IF_spTOS(spTOS=sp[0]);
1.119     anton    2673: 
                   2674: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2675: f = forget_dyncode(c_code);
                   2676: 
                   2677: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2678: ""a_prim is the code address of the primitive that has been
                   2679: compile_prim1ed to a_code""
1.121     anton    2680: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2681: 
1.112     pazsan   2682: \ set-next-code and call2 do not appear in images and can be
                   2683: \ renumbered arbitrarily
1.46      pazsan   2684: 
1.112     pazsan   2685: set-next-code ( #w -- ) gforth set_next_code
                   2686: #ifdef NO_IP
                   2687: next_code = (Label)w;
                   2688: #endif
1.34      jwilke   2689: 
1.112     pazsan   2690: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2691: /* call with explicit return address */
                   2692: #ifdef NO_IP
                   2693: INST_TAIL;
                   2694: JUMP(a_callee);
1.45      anton    2695: #else
1.112     pazsan   2696: assert(0);
1.45      anton    2697: #endif
1.131     pazsan   2698: 
                   2699: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2700: extern Cell groups[32];
                   2701: a_addr = groups;
1.51      anton    2702: 
1.54      pazsan   2703: \+
1.128     anton    2704: 
                   2705: \g static_super
                   2706: 
1.147     anton    2707: ifdef(`M4_ENGINE_FAST',
                   2708: `include(peeprules.vmg)')
1.54      pazsan   2709: 
1.112     pazsan   2710: \g end

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