diff options
| -rw-r--r-- | eval.s | 22 |
1 files changed, 15 insertions, 7 deletions
@@ -32,7 +32,7 @@ not_atom: 003036 005100 003040 004737 JSR PC, #eq ; test eq(first, at"LABEL") 003042 004600 -000044 001020 BNE not_label ; branch if not label +003044 001020 BNE not_label ; branch if not label ; if is label 003046 016202 MOV 2(R2), R2 ; rest <- cdr(hd) 003050 000002 @@ -99,7 +99,7 @@ evlis: (symbols, args) 003200 000002 003202 016303 MOV 2(R3), R3 ; symbols <- cdr(symbols) 003204 000002 -003206 000754 BR -40 ; jump to evlis(symbols, args) +003206 000754 BR evlis ; jump to evlis(symbols, args) done: 003210 012601 MOV (SP)+, R1 ; restore rest ; R1 = rest @@ -194,7 +194,7 @@ next: 003470 004600 003472 001026 BNE next ; skip if not cond ; return evcon(tl) -003474 010302 MOV R3, R2 ; c <- tl +00474 010302 MOV R3, R2 ; c <- tl evcon: ; R1 = arg1 = at"T" ; R2 = c @@ -277,8 +277,16 @@ next: 003700 000207 RTS PC otherwise: -; return eval(cons(assoc(hd), tl))) -003702 000207 RTS PC +; return eval(cons(assoc(hd), tl)) +003702 010200 MOV R2, R0 ; arg <- hd +003704 004737 JSR PC, #assoc ; arg1 <- assoc(hd) +003706 004500 +003710 010301 MOV R3, R1 ; arg2 <- tl +003712 004737 JSR PC, #cons ; arg <- cons(assoc(hd), tl) +003714 004400 +003716 004737 JSR PC, #eval ; result <- eval(arg) +003720 003000 +003722 000207 RTS PC ; This one touches R0, R1 eq: @@ -344,8 +352,8 @@ assoc: ; R2 = symbol ; R4 = symbol table pointer loop: -004504 020437 CMP R4, #10000 ; beginning of symbol table -004506 010000 +004504 020427 CMP R4, #6000 ; beginning of symbol table +004506 006000 004510 101411 BLOS bad ; symbol not found ; otherwise check next row 004512 005744 TST -(R4) ; skip column 1 |