1/*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ralph Campbell. 7 * 8 * %sccs.include.redist.c% 9 */ 10 11#include "SYS.h" 12 13#if defined(LIBC_SCCS) && !defined(lint) 14 ASMSTR("@(#)brk.s 8.1 (Berkeley) 06/04/93") 15#endif /* LIBC_SCCS and not lint */ 16 17#define SYS_brk 17 18 19LEAF(brk) 20 lw v0, minbrk 21 bgeu a0, v0, _brk 22 move a0, v0 # dont allow break < minbrk 23ALEAF(_brk) 24 li v0, SYS_brk 25 syscall 26 bne a3, zero, 1f 27 sw a0, curbrk 28 move v0, zero 29 j ra 301: 31 j _cerror 32END(brk) 33