summaryrefslogtreecommitdiff
path: root/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/cnd_aors_n.asm
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/cnd_aors_n.asm')
-rw-r--r--Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/cnd_aors_n.asm99
1 files changed, 99 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/cnd_aors_n.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/cnd_aors_n.asm
new file mode 100644
index 00000000000..e7836500d5e
--- /dev/null
+++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/cnd_aors_n.asm
@@ -0,0 +1,99 @@
+dnl ARM64 mpn_cnd_add_n, mpn_cnd_sub_n
+
+dnl Contributed to the GNU project by Torbjörn Granlund.
+
+dnl Copyright 2012, 2013 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 cycles/limb
+C Cortex-A53 ?
+C Cortex-A57 ?
+
+changecom(@&*$)
+
+define(`cnd', `x0')
+define(`rp', `x1')
+define(`up', `x2')
+define(`vp', `x3')
+define(`n', `x4')
+
+ifdef(`OPERATION_cnd_add_n', `
+ define(`ADDSUBC', adcs)
+ define(`CLRCY', `cmn xzr, xzr')
+ define(`RETVAL', `adc x0, xzr, xzr')
+ define(func, mpn_cnd_add_n)')
+ifdef(`OPERATION_cnd_sub_n', `
+ define(`ADDSUBC', sbcs)
+ define(`CLRCY', `cmp xzr, xzr')
+ define(`RETVAL', `sbc x0, xzr, xzr
+ and x0, x0, #1')
+ define(func, mpn_cnd_sub_n)')
+
+MULFUNC_PROLOGUE(mpn_cnd_add_n mpn_cnd_sub_n)
+
+ASM_START()
+PROLOGUE(func)
+ cmp cnd, #1
+ sbc cnd, cnd, cnd
+
+ CLRCY C really only needed for n = 0 (mod 4)
+
+ tbz n, #0, L(1)
+ ldr x10, [up], #8
+ ldr x12, [vp], #8
+ bic x6, x12, cnd
+ ADDSUBC x8, x10, x6
+ sub n, n, #1
+ str x8, [rp], #8
+ cbz n, L(rt)
+
+L(1): ldp x10, x11, [up], #16
+ ldp x12, x13, [vp], #16
+ sub n, n, #2
+ cbz n, L(end)
+
+L(top): bic x6, x12, cnd
+ bic x7, x13, cnd
+ ldp x12, x13, [vp], #16
+ ADDSUBC x8, x10, x6
+ ADDSUBC x9, x11, x7
+ ldp x10, x11, [up], #16
+ sub n, n, #2
+ stp x8, x9, [rp], #16
+ cbnz n, L(top)
+
+L(end): bic x6, x12, cnd
+ bic x7, x13, cnd
+ ADDSUBC x8, x10, x6
+ ADDSUBC x9, x11, x7
+ stp x8, x9, [rp]
+L(rt): RETVAL
+ ret
+EPILOGUE()