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shave two more bytes

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Peter Ferrie 2021-11-05 12:35:03 -07:00
parent 93d01e6932
commit 9cde674c1a
2 changed files with 4 additions and 4 deletions
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sectorlisp.S
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@ -228,6 +228,7 @@ Pairlis:cmp $NIL,%di # Pairlis(x:di,y:si,a:dx):ax
1: xchg %dx,%ax
ret
1: mov 2(%di),%di # di = Cdr(c)
Evcon: push %di # save c
mov (%di),%di # di = Car(c)
mov (%di),%ax # ax = Caar(c)
@ -236,8 +237,7 @@ Evcon: push %di # save c
pop %dx # restore a
pop %di # restore c
cmp $NIL,%ax
cmove 2(%di),%di # di = Cdr(c)
jz Evcon
jz 1b
mov (%di),%di # di = Car(c)
.EvCadr:call Cadr # ax = Cadar(c)
# jmp Eval
@ -300,13 +300,13 @@ Cadr: mov 2(%di),%di # contents of decrement register
.retA: mov (%di),%ax # contents of address register
ret
1: mov 2(%si),%dx # dx = Cdr(y)
Assoc: cmp $NIL,%dx # Assoc(x:ax,y:dx):ax
mov %dx,%si
je .retF
mov (%si),%bx # bx = Car(y)
cmp %ax,(%bx) # (%bx) = Caar(y)
cmovne 2(%si),%dx # dx = Cdr(y)
jne Assoc
jne 1b
mov 2(%bx),%ax # ax = Cdar(y)
ret