% Now Term has the term's record data and TermAddr has the address of the term.
lsl_imm(TEMP0, EXPR, 17), % Get the offset of the tail of the expr
- asr_imm(TEMP0, TEMP0, 17), % while preserveing the sign.
+ asr_imm(TEMP0, TEMP0, 17), % while preserving the sign.
eq_offset(Foo0), % if the offset is zero don't add the address. it's empty list.
add(TEMP0, TEMP0, EXPR_addr), % Add the address to the offset.
label(Foo0),
label(Cons), % Let's cons.
- asr_imm(TEMP0, TOS, 15), % TEMP0 := TOS >> 15
+ lsl_imm(TEMP0, TOS, 2), % Trim off the type tag 00 bits.
+ asr_imm(TEMP0, TEMP0, 17), % TEMP0 := TOS >> 15
eq_offset(Foo1), % if the offset is zero don't add the address. it's empty list.
add(TEMP0, TEMP0, SP), % TEMP0 = SP + TOS[30:15]
label(Foo1),
% TEMP0 = Address of the list to which to append.
- and_imm(TOS, TOS, 0x7fff), % get the offset of the tail of the stack
+ lsl_imm(TOS, TOS, 17), % Get the offset of the tail of the stack
+ asr_imm(TOS, TOS, 17), % while preserving the sign.
eq_offset(Foo2), % if the offset is zero don't add the address. it's empty list.
add(TOS, TOS, SP), % TOS = SP + TOS[15:0]
label(Foo2),
% the address of the second item on the stack is (TOS) + TEMP1[30:15]
% the address of the third stack cell is (TOS) + TEMP1[15: 0]
- asr_imm(TEMP2, TEMP1, 15), % TEMP2 := TEMP1 >> 15
+ lsl_imm(TEMP2, TEMP1, 2), % Trim off the type tag 00 bits.
+ asr_imm(TEMP2, TEMP2, 17), % TEMP2 := TEMP1 >> 15
eq_offset(Foo3), % if the offset is zero don't add the address. it's empty list.
add(TEMP2, TEMP2, TOS),
label(Foo3),
% TEMP2 contains the address of the second item on the stack
- and_imm(TEMP3, TEMP1, 0x7fff), % get the offset of the third stack cell
+ lsl_imm(TEMP3, TEMP1, 17), % Get the offset of the third stack cell
+ asr_imm(TEMP3, TEMP3, 17), % while preserving the sign.
eq_offset(Foo4), % if the offset is zero don't add the address. it's empty list.
add(TEMP3, TEMP1, TOS),
label(Foo4),
sub_imm(TEMP2, TEMP2, 0),
eq_offset(Foo5), % if the offset is zero don't subtract the address. it's empty list.
sub(TEMP2, TEMP2, SP),
+ and_imm(TEMP2, TEMP2, 0x7fff), % Mask off high bits.
label(Foo5),
sub_imm(TEMP0, TEMP0, 0),
eq_offset(Foo6), % if the offset is zero don't subtract the address. it's empty list.
sub(TEMP0, TEMP0, SP),
+ and_imm(TEMP0, TEMP0, 0x7fff), % Mask off high bits.
label(Foo6),
lsl_imm(TEMP2, TEMP2, 15), % TEMP2 := TEMP2 << 15
ior(TEMP2, TEMP2, TEMP0),
sub_imm(TEMP3, TEMP3, 0),
eq_offset(Foo7), % if the offset is zero don't subtract the address. it's empty list.
sub(TEMP3, TEMP3, SP),
+ and_imm(TEMP3, TEMP3, 0x7fff), % Mask off high bits.
label(Foo7),
mov_imm_with_shift(TOS, 2), % TOS := 4 << 15
ior(TOS, TOS, TEMP3),