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Exec with or without checks

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This commit is contained in:
David Schmenk 2023-12-25 11:29:17 -08:00
parent 07e0397ba4
commit e953458e76
1 changed files with 34 additions and 7 deletions
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41
src/toolsrc/plforth.pla
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@ -37,7 +37,7 @@ predef _pset_(a)#0, _colon_#0, _semi_#0
predef _tors_(a)#0, _fromrs_#1, _toprs_#1
predef _var_(a)#0, _const_(a)#0, _lit_#1, _slit_#1, _tick_#1, _forget_#0
predef _str_#0, _prstr_#0, _src_#0
predef _vlist_#0, _tron_#0, _troff_#0
predef _vlist_#0, _tron_#0, _troff_#0, _checkon_#0, _checkoff_#0
predef _show_#0, _showstack_#0, _bye_#0, _abort_#0
// DROP
char d_drop = "DROP"
@ -295,15 +295,23 @@ word = @d_showstack, @_tron_, 0
char d_troff = "TROFF"
byte = 0
word = @d_tron, @_troff_, 0
// CHECK ON
char d_checkon = "CHKON"
byte = 0
word = @d_troff, @_checkon_, 0
// CHECK OFF
char d_checkoff = "CHKOFF"
byte = 0
word = @d_checkon, @_checkoff_, 0
// LIST VOCAB
char d_vlist = "VLIST"
byte = 0
word = @d_troff, @_vlist_, 0
word = @d_checkoff, @_vlist_, 0
//
// Internal variables
//
word vlist = @d_vlist
word startheap, arg, infunc, inref, IIP, W
word startheap, arg, infunc, inref, execwords, IIP, W
const INBUF_SIZE = 80
char inbuf[INBUF_SIZE + 2]
word inptr = @inbuf
@ -513,11 +521,11 @@ def execword(dentry)#0
_abort_
fin
end
def execwords(wlist)#0
def execwords_check(wlist)#0
word prevIP, dentry
prevIP = IIP
IIP = wlist
IIP = wlist
while *IIP
dentry = *IIP
IIP = IIP + 2
@ -525,6 +533,18 @@ def execwords(wlist)#0
loop
IIP = prevIP
end
def execwords_nocheck(wlist)#0
word prevIP
prevIP = IIP
IIP = wlist
while *IIP
W = _cfa_(*IIP)
IIP = IIP + 2
(*W)()#0
loop
IIP = prevIP
end
def push(a)#1
return a
end
@ -682,7 +702,7 @@ def _const_(a)#0
*(_pfa_(vlist)) = a
end
def _docolon_#0
execwords(W + 2) // Exec PFA
execwords(W + 2)#0 // Exec PFA
end
def _colon_#0
state = comp_flag
@ -692,7 +712,7 @@ def _colon_#0
end
def _dodoes_#0
(@push)(W + 4)#0 // Address of PFA + 2
execwords(*(W + 2)) // Exec PFA ptr
execwords(*(W + 2))#0 // Exec PFA ptr
end
def _filldoes_#0
*(_cfa_(vlist)) = @_dodoes_
@ -882,6 +902,12 @@ end
def _troff_#0
trace = 0
end
def _checkon_#0
execwords = @execwords_check
end
def _checkoff_#0
execwords = @execwords_nocheck
end
def _vlist_#0
word d
@ -961,6 +987,7 @@ puts("PLFORTH WIP\n")
startheap = heapmark
_estkl = ^(@syscall + 1) // Hack to fill in parameter stack locations
_estkh = ^(@syscall + 3)
execwords = @execwords_nocheck
_warmstart_
inptr = argNext(argFirst)
if ^inptr; inptr++; _src_; fin