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      1  1.1  matt /*	$NetBSD: brk.S,v 1.1 2014/09/03 19:34:26 matt Exp $	*/
      2  1.1  matt 
      3  1.1  matt #include "SYS.h"
      4  1.1  matt 
      5  1.1  matt #if defined(LIBC_SCCS) && !defined(lint)
      6  1.1  matt __RCSID("$NetBSD: brk.S,v 1.1 2014/09/03 19:34:26 matt Exp $")
      7  1.1  matt #endif /* LIBC_SCCS && !lint */
      8  1.1  matt 
      9  1.1  matt 	.hidden	_C_LABEL(__curbrk)
     10  1.1  matt 	.hidden	_C_LABEL(__minbrk)
     11  1.1  matt 	.globl	_C_LABEL(__curbrk)
     12  1.1  matt 	.globl	_C_LABEL(__minbrk)
     13  1.1  matt 	.globl	_C_LABEL(_end)
     14  1.1  matt 
     15  1.1  matt #ifdef WEAK_ALIAS
     16  1.1  matt WEAK_ALIAS(brk, _brk)
     17  1.1  matt #endif
     18  1.1  matt 	.data
     19  1.1  matt 	.p2align 2
     20  1.1  matt _C_LABEL(__minbrk):
     21  1.1  matt 	.long	_C_LABEL(_end)
     22  1.1  matt _C_LABEL(__curbrk):
     23  1.1  matt 	.long	_C_LABEL(_end)
     24  1.1  matt 
     25  1.1  matt 	.text
     26  1.1  matt ENTRY(_brk)
     27  1.1  matt #ifdef __PIC__
     28  1.1  matt 	l.or	r8,r9,r0
     29  1.1  matt 	PIC_GOTSETUP(r7)
     30  1.1  matt 	l.or	r9,r8,r0
     31  1.1  matt 	l.movhi	r6,gotoffhi(_C_LABEL(__minbrk))
     32  1.1  matt 	l.ori	r6,r6,gotofflo(_C_LABEL(__minbrk))
     33  1.1  matt 	l.add	r6,r6,r7
     34  1.1  matt #else
     35  1.1  matt 	l.movhi	r6,hi(_C_LABEL(__minbrk))
     36  1.1  matt 	l.ori	r6,r6,lo(_C_LABEL(__minbrk))
     37  1.1  matt #endif
     38  1.1  matt 	l.lwz	r5,0(r6)		# r5 = __minbrk
     39  1.1  matt 	l.sfgts	r5,r3			# if (__minbrk <= r3)
     40  1.1  matt 	l.cmov	r5,r5,r3		# choose larger
     41  1.1  matt 	l.or	r3,r5,r0		# new break value
     42  1.1  matt 	_DOSYSCALL(break)		# assume, that r5 is kept
     43  1.1  matt 	l.bf	_C_LABEL(__cerror)
     44  1.1  matt 	l.nop
     45  1.1  matt 	l.sw	__SIZEOF_POINTER__(r6),r5
     46  1.1  matt 	l.xor	r11, r11, r11		# return 0
     47  1.1  matt 	l.jr	lr			# return 0
     48  1.1  matt 	l.nop
     49  1.1  matt END(_brk)
     50