Add libgmp 6.2.0 to third_party
Don't build it yet. That will come in the next review.
Change-Id: Idf3266558165e5ab45f4a41c98cc8c838c8244d5
diff --git a/third_party/gmp/mpn/pa64/umul.asm b/third_party/gmp/mpn/pa64/umul.asm
new file mode 100644
index 0000000..bd5a71f
--- /dev/null
+++ b/third_party/gmp/mpn/pa64/umul.asm
@@ -0,0 +1,97 @@
+dnl Copyright 1999, 2000, 2002, 2003 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/.
+
+
+dnl Optimizations:
+dnl * Avoid skip instructions
+dnl * Put carry-generating and carry-consuming insns consecutively
+dnl * Don't allocate any stack, "home" positions for parameters could be used.
+
+include(`../config.m4')
+
+define(`p0',`%r28')
+define(`p1',`%r29')
+define(`t32',`%r19')
+define(`t0',`%r20')
+define(`t1',`%r21')
+define(`x',`%r22')
+define(`m0',`%r23')
+define(`m1',`%r24')
+
+ifdef(`HAVE_ABI_2_0w',
+` .level 2.0w
+',` .level 2.0
+')
+PROLOGUE(mpn_umul_ppmm_r)
+ ldo 128(%r30),%r30
+ifdef(`HAVE_ABI_2_0w',
+` std %r26,-64(%r30)
+ std %r25,-56(%r30)
+ copy %r24,%r31
+',`
+ depd %r25,31,32,%r26
+ std %r26,-64(%r30)
+ depd %r23,31,32,%r24
+ std %r24,-56(%r30)
+ ldw -180(%r30),%r31
+')
+
+ fldd -64(%r30),%fr4
+ fldd -56(%r30),%fr5
+
+ xmpyu %fr5R,%fr4R,%fr6
+ fstd %fr6,-128(%r30)
+ xmpyu %fr5R,%fr4L,%fr7
+ fstd %fr7,-120(%r30)
+ xmpyu %fr5L,%fr4R,%fr8
+ fstd %fr8,-112(%r30)
+ xmpyu %fr5L,%fr4L,%fr9
+ fstd %fr9,-104(%r30)
+
+ depdi,z 1,31,1,t32 C t32 = 2^32
+
+ ldd -128(%r30),p0 C lo = low 64 bit of product
+ ldd -120(%r30),m0 C m0 = mid0 64 bit of product
+ ldd -112(%r30),m1 C m1 = mid1 64 bit of product
+ ldd -104(%r30),p1 C hi = high 64 bit of product
+
+ add,l,*nuv m0,m1,x C x = m1+m0
+ add,l t32,p1,p1 C propagate carry to mid of p1
+ depd,z x,31,32,t0 C lo32(m1+m0)
+ add t0,p0,p0
+ extrd,u x,31,32,t1 C hi32(m1+m0)
+ add,dc t1,p1,p1
+
+ std p0,0(%r31) C store low half of product
+ifdef(`HAVE_ABI_2_0w',
+` copy p1,%r28 C return val in %r28
+',` extrd,u p1,31,32,%r28 C return val in %r28,%r29
+')
+ bve (%r2)
+ ldo -128(%r30),%r30
+EPILOGUE(mpn_umul_ppmm_r)