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authorPeter Breitenlohner <peb@mppmu.mpg.de>2014-06-18 11:12:01 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2014-06-18 11:12:01 +0000
commit0c2f0333a4e539325da80cdf3fb182cd17134665 (patch)
treede5daa66b5595292a33c25110aa58ff8bff75543 /Build/source/libs/gmp/gmp-6.0.0/mpn/x86/k7/mmx/copyd.asm
parentdb612d5045ef55da386a2c3350d4811d1da1a858 (diff)
Add libs/gmp and libs/mpfr in preparation for MetaPost 2.0
git-svn-id: svn://tug.org/texlive/trunk@34274 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/x86/k7/mmx/copyd.asm')
-rw-r--r--Build/source/libs/gmp/gmp-6.0.0/mpn/x86/k7/mmx/copyd.asm144
1 files changed, 144 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/x86/k7/mmx/copyd.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/x86/k7/mmx/copyd.asm
new file mode 100644
index 00000000000..59ece40920b
--- /dev/null
+++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/x86/k7/mmx/copyd.asm
@@ -0,0 +1,144 @@
+dnl AMD K7 mpn_copyd -- copy limb vector, decrementing.
+
+dnl Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
+
+dnl This file is part of the GNU MP Library.
+dnl
+dnl The GNU MP Library is free software; you can redistribute it and/or modify
+dnl it under the terms of either:
+dnl
+dnl * the GNU Lesser General Public License as published by the Free
+dnl Software Foundation; either version 3 of the License, or (at your
+dnl option) any later version.
+dnl
+dnl or
+dnl
+dnl * the GNU General Public License as published by the Free Software
+dnl Foundation; either version 2 of the License, or (at your option) any
+dnl later version.
+dnl
+dnl or both in parallel, as here.
+dnl
+dnl The GNU MP Library is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+dnl for more details.
+dnl
+dnl You should have received copies of the GNU General Public License and the
+dnl GNU Lesser General Public License along with the GNU MP Library. If not,
+dnl see https://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+
+C alignment dst/src, A=0mod8 N=4mod8
+C A/A A/N N/A N/N
+C K7 0.75 1.0 1.0 0.75
+
+
+C void mpn_copyd (mp_ptr dst, mp_srcptr src, mp_size_t size);
+C
+C The various comments in mpn/x86/k7/copyi.asm apply here too.
+
+defframe(PARAM_SIZE,12)
+defframe(PARAM_SRC, 8)
+defframe(PARAM_DST, 4)
+deflit(`FRAME',0)
+
+dnl parameter space reused
+define(SAVE_EBX,`PARAM_SIZE')
+define(SAVE_ESI,`PARAM_SRC')
+
+dnl minimum 5 since the unrolled code can't handle less than 5
+deflit(UNROLL_THRESHOLD, 5)
+
+ TEXT
+ ALIGN(32)
+PROLOGUE(mpn_copyd)
+
+ movl PARAM_SIZE, %ecx
+ movl %ebx, SAVE_EBX
+
+ movl PARAM_SRC, %eax
+ movl PARAM_DST, %edx
+
+ cmpl $UNROLL_THRESHOLD, %ecx
+ jae L(unroll)
+
+ orl %ecx, %ecx
+ jz L(simple_done)
+
+L(simple):
+ C eax src
+ C ebx scratch
+ C ecx counter
+ C edx dst
+ C
+ C this loop is 2 cycles/limb
+
+ movl -4(%eax,%ecx,4), %ebx
+ movl %ebx, -4(%edx,%ecx,4)
+ decl %ecx
+ jnz L(simple)
+
+L(simple_done):
+ movl SAVE_EBX, %ebx
+ ret
+
+
+L(unroll):
+ movl %esi, SAVE_ESI
+ leal (%eax,%ecx,4), %ebx
+ leal (%edx,%ecx,4), %esi
+
+ andl %esi, %ebx
+ movl SAVE_ESI, %esi
+ subl $4, %ecx C size-4
+
+ testl $4, %ebx C testl to pad code closer to 16 bytes for L(top)
+ jz L(aligned)
+
+ C both src and dst unaligned, process one limb to align them
+ movl 12(%eax,%ecx,4), %ebx
+ movl %ebx, 12(%edx,%ecx,4)
+ decl %ecx
+L(aligned):
+
+
+ ALIGN(16)
+L(top):
+ C eax src
+ C ebx
+ C ecx counter, limbs
+ C edx dst
+
+ movq 8(%eax,%ecx,4), %mm0
+ movq (%eax,%ecx,4), %mm1
+ subl $4, %ecx
+ movq %mm0, 16+8(%edx,%ecx,4)
+ movq %mm1, 16(%edx,%ecx,4)
+ jns L(top)
+
+
+ C now %ecx is -4 to -1 representing respectively 0 to 3 limbs remaining
+
+ testb $2, %cl
+ jz L(finish_not_two)
+
+ movq 8(%eax,%ecx,4), %mm0
+ movq %mm0, 8(%edx,%ecx,4)
+L(finish_not_two):
+
+ testb $1, %cl
+ jz L(done)
+
+ movl (%eax), %ebx
+ movl %ebx, (%edx)
+
+L(done):
+ movl SAVE_EBX, %ebx
+ emms
+ ret
+
+
+EPILOGUE()