123 lines
3.0 KiB
NASM
123 lines
3.0 KiB
NASM
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; Copyright 2009 Jason Moxham
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;
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; Windows Conversion Copyright 2008 Brian Gladman
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;
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; This file is part of the MPIR Library.
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;
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; The MPIR Library is free software; you can redistribute it and/or modify
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; it under the terms of the GNU Lesser General Public License as published
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; by the Free Software Foundation; either version 2.1 of the License, or (at
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; your option) any later version.
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; The MPIR Library is distributed in the hope that it will be useful, but
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; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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; License for more details.
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; You should have received a copy of the GNU Lesser General Public License
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; along with the MPIR Library; see the file COPYING.LIB. If not, write
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; to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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; Boston, MA 02110-1301, USA.
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;
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; mp_limb_t mpn_sublsh_n(mp_ptr, mp_ptr, mp_ptr, mp_size_t, mp_uint, mp_limb_t)
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; mp_limb_t mpn_sublsh_nc(mp_ptr, mp_ptr, mp_ptr, mp_size_t, mp_uint)
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; rax rdi rsi rdx rcx r8 r9
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; rax rcx rdx r8 r9d [rsp+40] [rsp+48]
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%include "..\yasm_mac.inc"
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CPU Athlon64
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BITS 64
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%define reg_save_list rbx, rsi, rdi, rbp, r12, r13, r14, r15
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LEAF_PROC mpn_sublsh_n
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xor r9, r9
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jmp entry
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LEAF_PROC mpn_sublsh_nc
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movsxd r10, r9d
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mov r9, [rsp+48]
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entry:
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FRAME_PROC ?mpn_sublsh, 0, reg_save_list
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lea rdi, [rcx+r10*8]
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lea rsi, [rdx+r10*8]
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lea rdx, [r8+r10*8]
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movsxd rcx, dword [rsp+stack_use+40]
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neg rcx
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shr r9, cl
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neg r10
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xor rax, rax
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test r10, 3
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jz L_next
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L_lp:
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mov r8, [rdx+r10*8]
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mov r11, r8
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neg rcx
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shl r8, cl
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neg rcx
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shr r11, cl
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or r8, r9
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mov r9, r11
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add rax, 1
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mov r11, [rsi+r10*8]
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sbb r11, r8
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sbb rax, rax
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mov [rdi+r10*8], r11
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inc r10
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test r10, 3
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jnz L_lp
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L_next:
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cmp r10, 0
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jz L_end
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xalign 16
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L_loop:
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mov r8, [rdx+r10*8]
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mov rbp, [rdx+r10*8+8]
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mov rbx, [rdx+r10*8+16]
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mov r12, [rdx+r10*8+24]
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mov r11, r8
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mov r13, rbp
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mov r14, rbx
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mov r15, r12
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neg rcx
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shl r8, cl
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shl rbp, cl
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shl rbx, cl
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shl r12, cl
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neg rcx
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shr r11, cl
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shr r13, cl
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shr r14, cl
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shr r15, cl
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or r8, r9
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or rbp, r11
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or rbx, r13
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or r12, r14
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mov r9, r15
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add rax, 1
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mov r11, [rsi+r10*8]
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mov r13, [rsi+r10*8+8]
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mov r14, [rsi+r10*8+16]
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mov r15, [rsi+r10*8+24]
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sbb r11, r8
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sbb r13, rbp
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sbb r14, rbx
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sbb r15, r12
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sbb rax, rax
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mov [rdi+r10*8], r11
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mov [rdi+r10*8+8], r13
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mov [rdi+r10*8+16], r14
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mov [rdi+r10*8+24], r15
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add r10, 4
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jnz L_loop
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L_end:
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neg rax
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add rax, r9
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END_PROC reg_save_list
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end
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