38 lines
603 B
ArmAsm
38 lines
603 B
ArmAsm
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/* $NetBSD: sbrk.S,v 1.3 2006/07/07 06:50:06 ross Exp $ */
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#include "SYS.h"
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.globl _C_LABEL(__curbrk)
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.globl _C_LABEL(_end)
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#ifdef WEAK_ALIAS
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WEAK_ALIAS(sbrk, _sbrk)
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#endif
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.data
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_C_LABEL(__curbrk):
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.long _C_LABEL(_end)
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.text
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.macro LdAddr r,sym
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.pushsection ".toc","aw"
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100: .tc \sym[TC],\sym
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.popsection
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ld \r,100b@toc(2)
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.endm
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ENTRY(_sbrk)
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ldAddr %r6,__curbrk
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add %r3,%r3,%r6
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mr %r7,%r3 # r7 = new break
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li %r0,SYS_break
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sc # break(new_break)
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bso 1f
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mr %r3,%r6 # set return value
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LdAddr %r6,__curbrk
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std %r7,0(%r6)
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blr
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1:
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b PIC_PLT(_C_LABEL(__cerror))
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