1*52723Sbostic/*- 2*52723Sbostic * Copyright (c) 1991 The Regents of the University of California. 3*52723Sbostic * All rights reserved. 4*52723Sbostic * 5*52723Sbostic * This code is derived from software contributed to Berkeley by 6*52723Sbostic * Ralph Campbell. 7*52723Sbostic * 8*52723Sbostic * %sccs.include.redist.c% 9*52723Sbostic */ 10*52723Sbostic 11*52723Sbostic#include "SYS.h" 12*52723Sbostic 13*52723Sbostic#if defined(LIBC_SCCS) && !defined(lint) 14*52723Sbostic ASMSTR("@(#)brk.s 5.1 (Berkeley) 02/29/92") 15*52723Sbostic#endif /* LIBC_SCCS and not lint */ 16*52723Sbostic 17*52723Sbostic#define SYS_brk 17 18*52723Sbostic 19*52723SbosticLEAF(brk) 20*52723Sbostic lw v0, _minbrk 21*52723Sbostic bgeu a0, v0, _brk 22*52723Sbostic move a0, v0 # don't allow break < minbrk 23*52723SbosticALEAF(_brk) 24*52723Sbostic li v0, SYS_brk 25*52723Sbostic syscall 26*52723Sbostic bne a3, zero, 1f 27*52723Sbostic sw a0, _curbrk 28*52723Sbostic move v0, zero 29*52723Sbostic j ra 30*52723Sbostic1: 31*52723Sbostic j _cerror 32*52723SbosticEND(brk) 33