25 lines
279 B
ArmAsm
25 lines
279 B
ArmAsm
|
.sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text
|
||
|
|
.define __sbrk
|
||
|
|
__sbrk:
|
||
|
|
push bp
|
||
|
|
mov bp,sp
|
||
|
|
mov ax,4(bp)
|
||
|
|
mov bx,(.limhp)
|
||
|
|
add ax,bx
|
||
|
|
mov cx,sp
|
||
|
|
sub cx,128
|
||
|
|
sub cx,ax
|
||
|
|
jbe 1f
|
||
|
|
mov (.limhp),ax
|
||
|
|
sub ax,bx
|
||
|
|
jbe 2f
|
||
|
|
call xbrk
|
||
|
|
2:
|
||
|
|
mov ax,bx
|
||
|
|
pop bp
|
||
|
|
ret
|
||
|
|
1:
|
||
|
|
mov ax,0xc
|
||
|
|
pop bp
|
||
|
|
jmp cerror
|