mpir/mpn/x86_64w/k8/sublsh_n.asm

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; PROLOGUE(mpn_sublsh_n)
2012-11-25 17:13:44 -05:00
; Copyright 2009 Jason Moxham
;
; Windows Conversion Copyright 2008 Brian Gladman
;
; This file is part of the MPIR Library.
;
; The MPIR Library is free software; you can redistribute it and/or modify
; it under the terms of the GNU Lesser General Public License as published
; by the Free Software Foundation; either version 2.1 of the License, or (at
; your option) any later version.
; The MPIR Library is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
; License for more details.
; You should have received a copy of the GNU Lesser General Public License
; along with the MPIR Library; see the file COPYING.LIB. If not, write
; to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
; Boston, MA 02110-1301, USA.
;
; mp_limb_t mpn_sublsh_n(mp_ptr, mp_ptr, mp_ptr, mp_size_t, mp_uint, mp_limb_t)
; mp_limb_t mpn_sublsh_nc(mp_ptr, mp_ptr, mp_ptr, mp_size_t, mp_uint)
; rax rdi rsi rdx rcx r8 r9
; rax rcx rdx r8 r9 [rsp+40] [rsp+48]
%include "yasm_mac.inc"
CPU Athlon64
BITS 64
%define reg_save_list rbx, rsi, rdi, rbp, r12, r13, r14, r15
LEAF_PROC mpn_sublsh_n
mov r10, r9
xor r9, r9
jmp entry
LEAF_PROC mpn_sublsh_nc
mov r10, r9
mov r9, [rsp+48]
entry:
FRAME_PROC ?mpn_sublsh, 0, reg_save_list
lea rdi, [rcx+r10*8]
lea rsi, [rdx+r10*8]
lea rdx, [r8+r10*8]
mov ecx, dword [rsp+stack_use+40]
neg rcx
shr r9, cl
neg r10
xor rax, rax
test r10, 3
jz .2
.1: mov r8, [rdx+r10*8]
mov r11, r8
neg rcx
shl r8, cl
neg rcx
shr r11, cl
or r8, r9
mov r9, r11
add rax, 1
mov r11, [rsi+r10*8]
sbb r11, r8
sbb rax, rax
mov [rdi+r10*8], r11
inc r10
test r10, 3
jnz .1
.2: cmp r10, 0
jz .4
xalign 16
.3: mov r8, [rdx+r10*8]
mov rbp, [rdx+r10*8+8]
mov rbx, [rdx+r10*8+16]
mov r12, [rdx+r10*8+24]
mov r11, r8
mov r13, rbp
mov r14, rbx
mov r15, r12
neg rcx
shl r8, cl
shl rbp, cl
shl rbx, cl
shl r12, cl
neg rcx
shr r11, cl
shr r13, cl
shr r14, cl
shr r15, cl
or r8, r9
or rbp, r11
or rbx, r13
or r12, r14
mov r9, r15
add rax, 1
mov r11, [rsi+r10*8]
mov r13, [rsi+r10*8+8]
mov r14, [rsi+r10*8+16]
mov r15, [rsi+r10*8+24]
sbb r11, r8
sbb r13, rbp
sbb r14, rbx
sbb r15, r12
sbb rax, rax
mov [rdi+r10*8], r11
mov [rdi+r10*8+8], r13
mov [rdi+r10*8+16], r14
mov [rdi+r10*8+24], r15
add r10, 4
jnz .3
.4: neg rax
add rax, r9
END_PROC reg_save_list
end