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dnl S/390-64 mpn_mul_basecase.
dnl Copyright 2023 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 INPUT PARAMETERS
define(`rp', `%r2')
define(`ap', `%r3')
define(`an', `%r4') C 32
define(`bp', `%r5') C 40
define(`bn', `%r6') C 48
define(`idx', `%r14')
define(`b0', `%r10')
dnl live in addmul_1:
dnl r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 r13 r14
dnl xx xx rp ap an bp xx xx xx xx b0 i xx xx idx
dnl stack: bn
dnl TODO
dnl * Have mul_1 start without initial (un mod 4) separation, instead handle
dnl after loop. Then fall into 4 separate addmul_1 loops.
dnl * Streamline handling of bn, an, %r11 to reduce the # if memops.
define(`MUL_1',`
pushdef(`L',
defn(`L')$1`'_m1)
vzero %v2
srlg %r11, %r0, 2
tmll %r0, 1
je L(bx0)
L(bx1): tmll %r0, 2
jne L(b11)
L(b01): lghi idx, -24
lg %r13, 0(ap)
mlgr %r12, b0
stg %r13, 0(rp)
cgijne %r11, 0, L(cj0)
L(1): stg %r12, 8(rp)
lmg %r6, %r14, 48(%r15)
br %r14
L(b11): lghi idx, -8
lg %r9, 0(ap)
mlgr %r8, b0
stg %r9, 0(rp)
j L(cj1)
L(bx0): tmll %r0, 2
jne L(b10)
L(b00): lghi idx, -32
lghi %r12, 0
L(cj0): lg %r1, 32(idx, ap)
lg %r9, 40(idx, ap)
mlgr %r0, b0
mlgr %r8, b0
vlvgp %v6, %r0, %r1
vlvgp %v7, %r9, %r12
j L(mid)
L(b10): lghi idx, -16
lghi %r8, 0
L(cj1): lg %r7, 16(idx, ap)
lg %r13, 24(idx, ap)
mlgr %r6, b0
mlgr %r12, b0
vlvgp %v6, %r6, %r7
vlvgp %v7, %r13, %r8
cgije %r11, 0, L(end)
L(top): lg %r1, 32(idx, ap)
lg %r9, 40(idx, ap)
mlgr %r0, b0
mlgr %r8, b0
vacq %v3, %v6, %v7, %v2
vacccq %v2, %v6, %v7, %v2
vpdi %v3, %v3, %v3, 4
vst %v3, 16(idx, rp), 3
vlvgp %v6, %r0, %r1
vlvgp %v7, %r9, %r12
L(mid): lg %r7, 48(idx, ap)
lg %r13, 56(idx, ap)
mlgr %r6, b0
mlgr %r12, b0
vacq %v1, %v6, %v7, %v2
vacccq %v2, %v6, %v7, %v2
vpdi %v1, %v1, %v1, 4
vst %v1, 32(idx, rp), 3
vlvgp %v6, %r6, %r7
vlvgp %v7, %r13, %r8
la idx, 32(idx)
brctg %r11, L(top)
L(end): vacq %v3, %v6, %v7, %v2
vacccq %v2, %v6, %v7, %v2
vpdi %v3, %v3, %v3, 4
vst %v3, 16(idx, rp), 3
vlgvg %r0, %v2, 1
algr %r0, %r12
stg %r0, 32(idx, rp)
popdef(`L')
')
define(`ADDMUL_1',`
pushdef(`L',
defn(`L')$1`'_am1)
vzero %v0
vzero %v2
srlg %r11, %r0, 2
tmll %r0, 1
je L(bx0)
L(bx1): tmll %r0, 2
jne L(b11)
L(b01): lghi idx, -24
vleg %v2, 0(rp), 1
lg %r13, 0(ap)
vzero %v4
mlgr %r12, b0
vlvgg %v4, %r13, 1
vaq %v2, %v2, %v4
vsteg %v2, 0(rp), 1
vmrhg %v2, %v2, %v2
j L(cj0)
L(b11): lghi idx, -8
vleg %v2, 0(rp), 1
lg %r9, 0(ap)
vzero %v4
mlgr %r8, b0
vlvgg %v4, %r9, 1
vaq %v2, %v2, %v4
vsteg %v2, 0(rp), 1
vmrhg %v2, %v2, %v2
j L(cj1)
L(bx0): tmll %r0, 2
jne L(b10)
L(b00): lghi idx, -32
lghi %r12, 0
L(cj0): lg %r1, 32(idx, ap)
lg %r9, 40(idx, ap)
mlgr %r0, b0
mlgr %r8, b0
vlvgp %v6, %r0, %r1
vlvgp %v7, %r9, %r12
j L(mid)
L(b10): lghi idx, -16
lghi %r8, 0
L(cj1): lg %r7, 16(idx, ap)
lg %r13, 24(idx, ap)
mlgr %r6, b0
mlgr %r12, b0
vlvgp %v6, %r6, %r7
vlvgp %v7, %r13, %r8
cgije %r11, 0, L(end)
L(top): lg %r1, 32(idx, ap)
lg %r9, 40(idx, ap)
mlgr %r0, b0
mlgr %r8, b0
vl %v1, 16(idx, rp), 3
vpdi %v1, %v1, %v1, 4
vacq %v5, %v6, %v1, %v0
vacccq %v0, %v6, %v1, %v0
vacq %v3, %v5, %v7, %v2
vacccq %v2, %v5, %v7, %v2
vpdi %v3, %v3, %v3, 4
vst %v3, 16(idx, rp), 3
vlvgp %v6, %r0, %r1
vlvgp %v7, %r9, %r12
L(mid): lg %r7, 48(idx, ap)
lg %r13, 56(idx, ap)
mlgr %r6, b0
mlgr %r12, b0
vl %v4, 32(idx, rp), 3
vpdi %v4, %v4, %v4, 4
vacq %v5, %v6, %v4, %v0
vacccq %v0, %v6, %v4, %v0
vacq %v1, %v5, %v7, %v2
vacccq %v2, %v5, %v7, %v2
vpdi %v1, %v1, %v1, 4
vst %v1, 32(idx, rp), 3
vlvgp %v6, %r6, %r7
vlvgp %v7, %r13, %r8
la idx, 32(idx)
brctg %r11, L(top)
L(end): vl %v1, 16(idx, rp), 3
vpdi %v1, %v1, %v1, 4
vacq %v5, %v6, %v1, %v0
vacccq %v0, %v6, %v1, %v0
vacq %v3, %v5, %v7, %v2
vacccq %v2, %v5, %v7, %v2
vpdi %v3, %v3, %v3, 4
vst %v3, 16(idx, rp), 3
vag %v2, %v0, %v2
vlgvg %r0, %v2, 1
algr %r0, %r12
stg %r0, 32(idx, rp)
popdef(`L')
')
ASM_START()
PROLOGUE(mpn_mul_basecase)
stmg %r4, %r14, 32(%r15)
lgr %r4, bn
lg %r0, 32(%r15)
lg b0, 0(bp)
MUL_1() C implicitly pass r0 = an
aghi %r4, -1
je L(end)
L(top): lg %r0, 32(%r15)
la bp, 8(bp)
la rp, 8(rp)
lg b0, 0(bp)
ADDMUL_1() C implicitly pass r0 = an
brctg %r4, L(top)
L(end): lmg %r6, %r14, 48(%r15)
br %r14
EPILOGUE()
.section .note.GNU-stack
|
