\ asmbasic.fs basic assebmler definitions
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\ This file is part of Gforth.
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\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
[IFUNDEF] assembler Vocabulary assembler [THEN]
[IFUNDEF] chained require chains.fs [THEN]
\ ---------- Basic Definitions
\ (code) and (end-code) are used from interpreter or cross-compiler
\ Between (code) and (end-code) must be finished cpu-instructions
\ asm[ ... ]asm should or can be used to interrupt assembling
\ mode while assembling, the words should switch off and on
\ the assembler vocabulary or a special pasring mode
\ When using ]asm asm[ a cpu instruction has not to be finished
defer ]asm \ turns on assembler mode
defer asm[ \ turns off assebmler mode
defer (code) \ starts up a assembler passage
defer (end-code) \ ends an assembler passage
\ Numref registers in propper8 (to reset some flags) and in
\ end-code8 (for resolving)
\ propper should be executed before at assembling start
\ and when an intstruction is finished.
Variable code8 \ starts assembling
0 code8 !
Variable end-code8 \ ends assembling
0 end-code8 !
Variable propper8 \ clean up flags for new cpu instructions
0 propper8 !
: propper propper8 chainperform ;
get-order >r = ABORT" Assembler is activated!"
r> 2 - 0 ?DO drop LOOP
; ' ]asm-1 IS ]asm
get-order >r <> ABORT" Assembler isn't activated!"
r> 2 - 0 ?DO drop LOOP
previous previous ; ' asm[-1 IS asm[
\ the next input is assebler code witch is stored at dp
; ' (code)-1 IS (code)
\ the next code are normal forth definitions
asm[ ; ' (end-code)-1 IS (end-code)
\ for test purposes
: code create (code) ;
: end-code (end-code) ;
also assembler also definitions forth
: end-label (end-code) asm-current @ set-current ;
: end-macros previous previous asm-current @ set-current ;
: : : ;
: ; postpone ; ; immediate
: label there constant ;
: equ constant ;
: start-macros get-current asm-current ! also forth also assembler definitions ;
: label (code) label ;