Initial commit of OpenSPARC T2 architecture model.
[OpenSPARC-T2-SAM] / obp / obp / fm / lib / sift.fth
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1\ ========== Copyright Header Begin ==========================================
2\
3\ Hypervisor Software File: sift.fth
4\
5\ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
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41\ ========== Copyright Header End ============================================
42\ sift.fth 2.11 99/05/04
43\ Copyright 1985-1990 Bradley Forthware
44
45also hidden
46only forth also hidden also definitions
47decimal
48headerless
49
50variable sift-vocabulary
51
52\ Leave a "hook" for showing the name of the vocabulary
53\ only once, the first time a matching name is found.
54\ Showing the name of a device can be plugged in here also...
55defer .voc ['] noop is .voc
56
57: .in ( -- ) ??cr tabstops @ spaces ." In " ;
58: .vocab ( -- )
59 .in ['] vocabulary .name space
60 sift-vocabulary @ .name cr
61 ['] noop is .voc
62;
63
64\ Show the "sifted" name, preceded by its cfa in parentheses.
65\ Show the name of the vocabulary only the first time.
66\ Control the display with exit?
67: .sift? ( nfa -- exit? )
68 .voc
69 exit? tuck if drop exit then ( exit? nfa )
70 dup name> ( exit? nfa cfa )
71 over n>flags c@ h# 20 and if token@ then \ Handle aliases
72 fake-name ( nfa fstr )
73 over name>string nip
74 over name>string nip + 3 + .tab
75 .id .id 2 spaces
76;
77
78\ Sift through the given vocabulary, using the sift-string given.
79\ Control the display with exit?
80: vsift? ( adr,len voc-acf -- exit? )
81 dup sift-vocabulary !
82 -rot 2>r 0 swap ( alf voc-acf ) ( r: adr,len )
83 begin another-word? while ( alf' voc-acf nfa ) ( r: adr,len )
84 dup 2r@ rot name>string sindex ( alf' voc-acf nfa indx|-1 ) ( r: adr,len )
85 1+ if .sift? if ( alf' voc-acf ) ( r: adr,len )
86 2drop 2r> 2drop true exit
87 then ( alf' voc-acf ) ( r: adr,len )
88 else ( alf' voc-acf nfa ) ( r: adr,len )
89 drop ( alf' voc-acf ) ( r: adr,len )
90 then ( alf' voc-acf ) ( r: adr,len )
91 repeat 2r> 2drop false ( false )
92;
93
94headers
95forth definitions
96
97\ Sift through all the vocabularies for the string given
98\ on the stack as addr,len
99: $sift ( adr,len -- )
100 voc-link begin another-link? while ( adr,len v-link )
101 ['] .vocab is .voc ( adr,len v-link )
102 voc> >r ( adr,len ) ( r: voc-acf )
103 2dup r@ vsift? if r> 3drop exit then ( adr,len ) ( r: voc-acf )
104 r> >voc-link ( adr,len v-link' )
105 repeat 2drop ( )
106;
107
108\ Same thing, only the string is given on the stack in packed format
109: sift ( str -- ) count $sift ;
110
111\ Same thing, only the string is given in the input stream.
112: sifting \ name ( -- )
113 safe-parse-word $sift
114;
115
116only forth also definitions