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dnl Intel Atom mpn_addlshC_n/mpn_rsblshC_n -- rp[] = (vp[] << C) +- up[]
dnl Contributed to the GNU project by Marco Bodrato.
dnl Copyright 2011 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 mp_limb_t mpn_addlshC_n (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
C mp_size_t size);
C mp_limb_t mpn_addlshC_nc (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
C mp_size_t size, mp_limb_t carry);
C mp_limb_t mpn_rsblshC_n (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
C mp_size_t size);
C mp_limb_t mpn_rsblshC_nc (mp_ptr dst, mp_srcptr src1, mp_srcptr src2,
C mp_size_t size, mp_signed_limb_t carry);
C cycles/limb
C P5
C P6 model 0-8,10-12
C P6 model 9 (Banias)
C P6 model 13 (Dothan)
C P4 model 0 (Willamette)
C P4 model 1 (?)
C P4 model 2 (Northwood)
C P4 model 3 (Prescott)
C P4 model 4 (Nocona)
C Intel Atom 6
C AMD K6
C AMD K7
C AMD K8
C AMD K10
defframe(PARAM_CORB, 20)
defframe(PARAM_SIZE, 16)
defframe(PARAM_DBLD, 12)
defframe(PARAM_SRC, 8)
defframe(PARAM_DST, 4)
dnl re-use parameter space
define(VAR_COUNT,`PARAM_SIZE')
define(SAVE_EBP,`PARAM_DBLD')
define(SAVE_VP,`PARAM_SRC')
define(SAVE_UP,`PARAM_DST')
define(M, eval(m4_lshift(1,LSH)))
define(`rp', `%edi')
define(`up', `%esi')
define(`vp', `%ebx')
ASM_START()
TEXT
ALIGN(8)
PROLOGUE(M4_function_c)
deflit(`FRAME',0)
movl PARAM_CORB, %eax
movl %eax, %edx
shr $LSH, %edx
andl $1, %edx
M4_opp %edx, %eax
jmp L(start_nc)
EPILOGUE()
PROLOGUE(M4_function)
deflit(`FRAME',0)
xor %eax, %eax
xor %edx, %edx
L(start_nc):
push rp FRAME_pushl()
mov PARAM_SIZE, %ecx C size
mov PARAM_DST, rp
mov up, SAVE_UP
incl %ecx C size + 1
mov PARAM_SRC, up
mov vp, SAVE_VP
shr %ecx C (size+1)\2
mov PARAM_DBLD, vp
mov %ebp, SAVE_EBP
mov %ecx, VAR_COUNT
jnc L(entry) C size odd
shr %edx C size even
mov (vp), %ecx
lea 4(vp), vp
lea (%eax,%ecx,M), %edx
mov %ecx, %eax
lea -4(up), up
lea -4(rp), rp
jmp L(enteven)
ALIGN(16)
L(oop):
lea (%eax,%ecx,M), %ebp
shr $RSH, %ecx
mov 4(vp), %eax
shr %edx
lea 8(vp), vp
M4_inst (up), %ebp
lea (%ecx,%eax,M), %edx
mov %ebp, (rp)
L(enteven):
M4_inst 4(up), %edx
lea 8(up), up
mov %edx, 4(rp)
adc %edx, %edx
shr $RSH, %eax
lea 8(rp), rp
L(entry):
mov (vp), %ecx
decl VAR_COUNT
jnz L(oop)
lea (%eax,%ecx,M), %ebp
shr $RSH, %ecx
shr %edx
mov SAVE_VP, vp
M4_inst (up), %ebp
mov %ecx, %eax
mov SAVE_UP, up
M4_inst $0, %eax
mov %ebp, (rp)
mov SAVE_EBP, %ebp
pop rp FRAME_popl()
ret
EPILOGUE()
ASM_END()
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