Annotation of gforth/asm/basic.fs, revision 1.5
1.1 pazsan 1: \ asmbasic.fs basic assebmler definitions
2:
1.5 ! anton 3: \ Copyright (C) 1998,2000 Free Software Foundation, Inc.
1.3 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
1.4 anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.3 anton 20:
1.1 pazsan 21: [IFUNDEF] assembler Vocabulary assembler [THEN]
1.2 pazsan 22: require ./target.fs
1.1 pazsan 23: [IFUNDEF] chained require chains.fs [THEN]
24:
25: \ ---------- Basic Definitions
26:
27: \ (code) and (end-code) are used from interpreter or cross-compiler
28: \ Between (code) and (end-code) must be finished cpu-instructions
29: \ asm[ ... ]asm should or can be used to interrupt assembling
30: \ mode while assembling, the words should switch off and on
31: \ the assembler vocabulary or a special pasring mode
32: \ When using ]asm asm[ a cpu instruction has not to be finished
33:
34: defer ]asm \ turns on assembler mode
35: defer asm[ \ turns off assebmler mode
36:
37: defer (code) \ starts up a assembler passage
38: defer (end-code) \ ends an assembler passage
39:
40: \ Chains
41:
42: \ Numref registers in propper8 (to reset some flags) and in
43: \ end-code8 (for resolving)
44: \ propper should be executed before at assembling start
45: \ and when an intstruction is finished.
46:
47: Variable code8 \ starts assembling
48: 0 code8 !
49:
50: Variable end-code8 \ ends assembling
51: 0 end-code8 !
52:
53: Variable propper8 \ clean up flags for new cpu instructions
54: 0 propper8 !
55:
56: : propper propper8 chainperform ;
57:
58: : ]asm-1
59: also assembler
60: get-order >r = ABORT" Assembler is activated!"
61: r> 2 - 0 ?DO drop LOOP
62: ; ' ]asm-1 IS ]asm
63:
64: : asm[-1
65: also assembler
66: get-order >r <> ABORT" Assembler isn't activated!"
67: r> 2 - 0 ?DO drop LOOP
68: previous previous ; ' asm[-1 IS asm[
69:
70: : (code)-1
71: \ the next input is assebler code witch is stored at dp
72: ]asm
73: propper
74: code8 chainperform
75: ; ' (code)-1 IS (code)
76:
77: : (end-code)-1
78: \ the next code are normal forth definitions
79: end-code8 chainperform
80: asm[ ; ' (end-code)-1 IS (end-code)
81:
82: \ for test purposes
83:
84: [IFUNDEF] there
85: : code create (code) ;
86: : end-code (end-code) ;
87: [THEN]
88:
89: also assembler also definitions forth
90:
91: variable asm-current
92:
93: : end-label (end-code) asm-current @ set-current ;
94: : end-macros previous previous asm-current @ set-current ;
95:
96: \ Macros
97:
98: : : : ;
99: : ; postpone ; ; immediate
100:
101: : label there constant ;
102: : equ constant ;
103:
104: forth definitions
105:
106: : start-macros get-current asm-current ! also forth also assembler definitions ;
107: : label (code) label ;
108:
109: previous previous
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