ack/mach/6500/libem/lar.s
1984-12-17 11:03:13 +00:00

26 lines
536 B
ArmAsm

.define Lar
! This subroutine performs the LAR instruction.
! For details see rapport IR-81.
Lar:
jsr Aar ! get object address
ldy NBYTES+1 ! the size of the object (highbyte)
bne 2f
ldy NBYTES ! the size of the object (lowbyte)
cpy #1
bne 1f ! object size is one byte
jsr Loi1 ! get object
jmp Push ! push on the stack
1: cpy #2
bne 1f ! object size is a word
jsr Loi ! get word
jmp Push ! push on the stack
1: cpy #4
bne 2f ! object size is four bytes
jmp Ldi ! get object
2: jmp Loil ! get object