Initial commit.

1 files changed, 180 insertions, 0 deletions

diff --git a/gmp-6.3.0/mpn/arm/v7a/cora15/com.asm b/gmp-6.3.0/mpn/arm/v7a/cora15/com.asm
new file mode 100644
index 0000000..a258afe
--- /dev/null
+++ b/gmp-6.3.0/mpn/arm/v7a/cora15/com.asm
@@ -0,0 +1,180 @@
+dnl  ARM mpn_com optimised for A15.
+
+dnl  Contributed to the GNU project by Torbjörn Granlund.
+
+dnl  Copyright 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 StrongARM	 ?
+C XScale	 ?
+C Cortex-A7	 ?
+C Cortex-A8	 ?
+C Cortex-A9	2.5
+C Cortex-A15	1.0
+
+C This is great A15 core register code, but it is a bit large.
+C We use FEEDIN_VARIANT 1 to save some space, but use 8-way unrolling.
+
+C Architecture requirements:
+C v5	-
+C v5t	-
+C v5te	ldrd strd
+C v6	-
+C v6t2	-
+C v7a	-
+
+define(`FEEDIN_VARIANT', 1)	C alternatives: 0 1 2
+define(`UNROLL', 4x2)		C alternatives: 4 4x2
+
+define(`rp', `r0')
+define(`up', `r1')
+define(`n',  `r2')
+
+ASM_START()
+PROLOGUE(mpn_com)
+	push	{ r4-r5,r8-r9 }
+
+ifelse(FEEDIN_VARIANT,0,`
+	ands	r12, n, #3
+	mov	n, n, lsr #2
+	beq	L(b00a)
+	tst	r12, #1
+	beq	L(bx0)
+	ldr	r5, [up], #4
+	mvn	r9, r5
+	str	r9, [rp], #4
+	tst	r12, #2
+	beq	L(b00)
+L(bx0):	ldrd	r4, r5, [up, #0]
+	sub	rp, rp, #8
+	b	L(lo)
+L(b00):	tst	n, n
+	beq	L(wd1)
+L(b00a):ldrd	r4, r5, [up], #-8
+	sub	rp, rp, #16
+	b	L(mid)
+')
+ifelse(FEEDIN_VARIANT,1,`
+	and	r12, n, #3
+	mov	n, n, lsr #2
+	tst	r12, #1
+	beq	L(bx0)
+	ldr	r5, [up], #4
+	mvn	r9, r5
+	str	r9, [rp], #4
+L(bx0):	tst	r12, #2
+	beq	L(b00)
+	ldrd	r4, r5, [up, #0]
+	sub	rp, rp, #8
+	b	L(lo)
+L(b00):	tst	n, n
+	beq	L(wd1)
+	ldrd	r4, r5, [up], #-8
+	sub	rp, rp, #16
+	b	L(mid)
+')
+ifelse(FEEDIN_VARIANT,2,`
+	ands	r12, n, #3
+	mov	n, n, lsr #2
+	beq	L(b00)
+	cmp	r12, #2
+	bcc	L(b01)
+	beq	L(b10)
+
+L(b11):	ldr	r5, [up], #4
+	mvn	r9, r5
+	ldrd	r4, r5, [up, #0]
+	str	r9, [rp], #-4
+	b	L(lo)
+
+L(b00):	ldrd	r4, r5, [up], #-8
+	sub	rp, rp, #16
+	b	L(mid)
+
+L(b01):	ldr	r5, [up], #-4
+	mvn	r9, r5
+	str	r9, [rp], #-12
+	tst	n, n
+	beq	L(wd1)
+L(gt1):	ldrd	r4, r5, [up, #8]
+	b	L(mid)
+
+L(b10):	ldrd	r4, r5, [up]
+	sub	rp, rp, #8
+	b	L(lo)
+')
+	ALIGN(16)
+ifelse(UNROLL,4,`
+L(top):	ldrd	r4, r5, [up, #8]
+	strd	r8, r9, [rp, #8]
+L(mid):	mvn	r8, r4
+	mvn	r9, r5
+	ldrd	r4, r5, [up, #16]!
+	strd	r8, r9, [rp, #16]!
+	sub	n, n, #1
+L(lo):	mvn	r8, r4
+	mvn	r9, r5
+	tst	n, n
+	bne	L(top)
+')
+ifelse(UNROLL,4x2,`
+L(top):	ldrd	r4, r5, [up, #8]
+	strd	r8, r9, [rp, #8]
+L(mid):	mvn	r8, r4
+	mvn	r9, r5
+	ldrd	r4, r5, [up, #16]
+	strd	r8, r9, [rp, #16]
+	mvn	r8, r4
+	mvn	r9, r5
+	sub	n, n, #2
+	tst	n, n
+	bmi	L(dne)
+	ldrd	r4, r5, [up, #24]
+	strd	r8, r9, [rp, #24]
+	mvn	r8, r4
+	mvn	r9, r5
+	ldrd	r4, r5, [up, #32]!
+	strd	r8, r9, [rp, #32]!
+L(lo):	mvn	r8, r4
+	mvn	r9, r5
+	tst	n, n
+	bne	L(top)
+')
+
+L(end):	strd	r8, r9, [rp, #8]
+L(wd1):	pop	{ r4-r5,r8-r9 }
+	bx	r14
+ifelse(UNROLL,4x2,`
+L(dne):	strd	r8, r9, [rp, #24]
+	pop	{ r4-r5,r8-r9 }
+	bx	r14
+')
+EPILOGUE()