0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
55 lines
1.1 KiB
ArmAsm
55 lines
1.1 KiB
ArmAsm
/* $NetBSD: brk.S,v 1.14 2014/08/23 02:24:22 matt Exp $ */
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#include "SYS.h"
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: brk.S,v 1.14 2014/08/23 02:24:22 matt Exp $")
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#endif /* LIBC_SCCS && !lint */
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.hidden _C_LABEL(__curbrk)
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.globl _C_LABEL(__curbrk)
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.hidden _C_LABEL(__minbrk)
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.globl _C_LABEL(__minbrk)
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.globl _C_LABEL(_end)
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#ifdef WEAK_ALIAS
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WEAK_ALIAS(brk, _brk)
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#endif
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.data
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.p2align 2
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_C_LABEL(__minbrk):
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.long _C_LABEL(_end)
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_C_LABEL(__curbrk):
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.long _C_LABEL(_end)
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ENTRY(_brk)
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#ifdef __PIC__
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mflr %r0
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bcl 20,31,.LPIC0
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.LPIC0: mflr %r9
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mtlr %r0
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addis %r9,%r9,(_C_LABEL(__minbrk)-.LPIC0)@ha
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ldptru %r5,(_C_LABEL(__minbrk)-.LPIC0)@l(%r9) # r5 = &_end
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#else
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lis %r9,_C_LABEL(__minbrk)@ha
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ldptru %r5,_C_LABEL(__minbrk)@l(%r9) # r5 = &_end
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#endif
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cmpptrl %r5,%r3 # if (__minbrk <= r3)
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#ifdef __PPC_ISEL__
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iselgt %r3,%r5,%r3
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#else
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bgt 0f
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mr %r5,%r3 # r5 = r3
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0:
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mr %r3,%r5 # new break value
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#endif
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_DOSYSCALL(break) # assume that r5 is preserved
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bso 1f
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stptr %r5,__SIZEOF_POINTER__(%r9)
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blr # return 0
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1:
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BRANCH_TO_CERROR()
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END(_brk)
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