ack/mach/pmds4/libsys/sbrk.s
1987-03-30 12:40:09 +00:00

38 lines
469 B
ArmAsm

.define _sbrk
.define _brk
.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
.extern _sbrk
.extern _brk
_sbrk: tst.b -8(sp)
move.l 4(sp),d0
beq 1f
add.l nd,d0
move.l d0,-(sp)
clr.l -(sp)
trap #0
.data2 0x11
add.l #8,sp
bcc 1f
jmp cerror
1:
move.l nd,d0
move.l 4(sp),d1
add.l d1,nd
rts
_brk: trap #0
.data2 0x11
bcc 1f
jmp cerror
1:
move.l 4(sp),nd
clr.l d0
rts
.sect .data
nd:
.data4 endbss
.sect .text