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