newlib-cygwin/newlib/libc/sys/sysvnecv70/sbrk.S

35 lines
475 B
ArmAsm

.globl _sbrk
.globl __sbrk
_sbrk:
__sbrk:
mov.w tptr,r0
test.w [ap]
je justreport
add.w r0,[ap]
push [ap]
mov.w ap,r3
mov.w sp,ap
chlvl #0x0,#0x11
jnl ok
add.w #0x4,sp
jmp cerror
ok: add.w #0x4,sp
mov.w tptr,r0
mov.w [r3],tptr
justreport:
ret #0x0
.globl _brk
.globl __brk
__brk:
_brk: chlvl #0x0,#0x11
jnl ok1
jmp cerror
ok1: mov.w [ap],63
xor.w r0,r0
ret #0x0
.data
tptr: .word _end