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-rw-r--r--sysdeps/powerpc/sub_n.s69
1 files changed, 0 insertions, 69 deletions
diff --git a/sysdeps/powerpc/sub_n.s b/sysdeps/powerpc/sub_n.s
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index 8711bf9a40..0000000000
--- a/sysdeps/powerpc/sub_n.s
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@@ -1,69 +0,0 @@
- # Subtract two limb vectors of equal, non-zero length for PowerPC.
- # Copyright (C) 1997 Free Software Foundation, Inc.
- # This file is part of the GNU C Library.
- #
- # The GNU C Library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Library General Public License as
- # published by the Free Software Foundation; either version 2 of the
- # License, or (at your option) any later version.
- #
- # The GNU C Library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- # Library General Public License for more details.
- #
- # You should have received a copy of the GNU Library General Public
- # License along with the GNU C Library; see the file COPYING.LIB.  If not,
- # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- # Boston, MA 02111-1307, USA.
-
- # mp_limb_t mpn_sub_n (mp_ptr res_ptr, mp_srcptr s1_ptr, mp_srcptr s2_ptr,
- #                      mp_size_t size)
- # Calculate s1-s2 and put result in res_ptr; return borrow, 0 or 1.
-
- # Note on optimisation: This code is optimal for the 601.  Almost every other
- # possible 2-unrolled inner loop will not be.  Also, watch out for the
- # alignment...
-
-	.align 3
-	.globl __mpn_sub_n
-	.type	 __mpn_sub_n,@function
-	nop
-__mpn_sub_n:
- # Set up for loop below.
-	mtcrf 0x01,%r6
-	srwi. %r7,%r6,1
-	mtctr %r7
-	bt    31,2f
-
- # Set the carry (clear the borrow).
-	subfc %r0,%r0,%r0
- # Adjust pointers for loop.
-	addi  %r3,%r3,-4
-	addi  %r4,%r4,-4
-	addi  %r5,%r5,-4
-	b     0f
-
-2:	lwz   %r7,0(%r5)
-	lwz   %r6,0(%r4)
-	subfc %r6,%r7,%r6
-	stw   %r6,0(%r3)
-        beq   1f
-
- # Align start of loop to an odd word boundary to guarantee that the
- # last two words can be fetched in one access (for 601).  This turns
- # out to be important.
-0:
-	lwz   %r9,4(%r4)
-	lwz   %r8,4(%r5)
-	lwzu  %r6,8(%r4)
-	lwzu  %r7,8(%r5)
-	subfe %r8,%r8,%r9
-	stw   %r8,4(%r3)
-	subfe %r6,%r7,%r6
-	stwu  %r6,8(%r3)
-	bdnz  0b
- # return the borrow
-1:	subfe %r3,%r3,%r3
-	neg   %r3,%r3
-	blr