diff options
Diffstat (limited to 'src/isa-l/crc/crc_multibinary.asm')
| -rw-r--r-- | src/isa-l/crc/crc_multibinary.asm | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/isa-l/crc/crc_multibinary.asm b/src/isa-l/crc/crc_multibinary.asm new file mode 100644 index 00000000..ae0c0498 --- /dev/null +++ b/src/isa-l/crc/crc_multibinary.asm @@ -0,0 +1,180 @@ +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +; Copyright(c) 2011-2015 Intel Corporation All rights reserved. +; +; Redistribution and use in source and binary forms, with or without +; modification, are permitted provided that the following conditions +; are met: +; * Redistributions of source code must retain the above copyright +; notice, this list of conditions and the following disclaimer. +; * Redistributions in binary form must reproduce the above copyright +; notice, this list of conditions and the following disclaimer in +; the documentation and/or other materials provided with the +; distribution. +; * Neither the name of Intel Corporation nor the names of its +; contributors may be used to endorse or promote products derived +; from this software without specific prior written permission. +; +; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +default rel +[bits 64] + +%ifidn __OUTPUT_FORMAT__, elf64 +%define WRT_OPT wrt ..plt +%else +%define WRT_OPT +%endif + +%include "reg_sizes.asm" + +extern crc32_iscsi_00 +extern crc32_iscsi_01 +extern crc32_iscsi_base + +extern crc32_ieee_01 +extern crc32_ieee_by4 ;; Optimized for SLM +extern crc32_ieee_base + +extern crc16_t10dif_01 +extern crc16_t10dif_by4 ;; Optimized for SLM +extern crc16_t10dif_base + +section .data +;;; *_mbinit are initial values for *_dispatched; is updated on first call. +;;; Therefore, *_dispatch_init is only executed on first call. + +crc32_iscsi_dispatched: + dq crc32_iscsi_mbinit + +crc32_ieee_dispatched: + dq crc32_ieee_mbinit + +crc16_t10dif_dispatched: + dq crc16_t10dif_mbinit + +section .text +;;;; +; crc32_iscsi multibinary function +;;;; +global crc32_iscsi:function +crc32_iscsi_mbinit: + call crc32_iscsi_dispatch_init +crc32_iscsi: + jmp qword [crc32_iscsi_dispatched] + +crc32_iscsi_dispatch_init: + push rax + push rbx + push rcx + push rdx + push rsi + lea rsi, [crc32_iscsi_base WRT_OPT] ; Default + + mov eax, 1 + cpuid + lea rbx, [crc32_iscsi_00 WRT_OPT] + lea rax, [crc32_iscsi_01 WRT_OPT] + + test ecx, FLAG_CPUID1_ECX_SSE4_2 + cmovne rsi, rbx + test ecx, FLAG_CPUID1_ECX_CLMUL + cmovne rsi, rax + mov [crc32_iscsi_dispatched], rsi + pop rsi + pop rdx + pop rcx + pop rbx + pop rax + ret + +;;;; +; crc32_ieee multibinary function +;;;; +global crc32_ieee:function +crc32_ieee_mbinit: + call crc32_ieee_dispatch_init +crc32_ieee: + jmp qword [crc32_ieee_dispatched] + +crc32_ieee_dispatch_init: + push rax + push rbx + push rcx + push rdx + push rsi + lea rsi, [crc32_ieee_base WRT_OPT] ; Default + + mov eax, 1 + cpuid + lea rbx, [crc32_ieee_01 WRT_OPT] + lea rdx, [crc32_ieee_by4 WRT_OPT] + + test ecx, FLAG_CPUID1_ECX_SSE3 + jz use_ieee_base + test ecx, FLAG_CPUID1_ECX_CLMUL + cmovne rsi, rbx + and eax, FLAG_CPUID1_EAX_STEP_MASK + cmp eax, FLAG_CPUID1_EAX_AVOTON + cmove rsi, rdx +use_ieee_base: + mov [crc32_ieee_dispatched], rsi + pop rsi + pop rdx + pop rcx + pop rbx + pop rax + ret + +;;;; +; crc16_t10dif multibinary function +;;;; +global crc16_t10dif:function +crc16_t10dif_mbinit: + call crc16_t10dif_dispatch_init +crc16_t10dif: + jmp qword [crc16_t10dif_dispatched] + +crc16_t10dif_dispatch_init: + push rax + push rbx + push rcx + push rdx + push rsi + lea rsi, [crc16_t10dif_base WRT_OPT] ; Default + + mov eax, 1 + cpuid + lea rbx, [crc16_t10dif_01 WRT_OPT] + lea rdx, [crc16_t10dif_by4 WRT_OPT] + + test ecx, FLAG_CPUID1_ECX_SSE3 + jz use_t10dif_base + test ecx, FLAG_CPUID1_ECX_CLMUL + cmovne rsi, rbx + and eax, FLAG_CPUID1_EAX_STEP_MASK + cmp eax, FLAG_CPUID1_EAX_AVOTON + cmove rsi, rdx +use_t10dif_base: + mov [crc16_t10dif_dispatched], rsi + pop rsi + pop rdx + pop rcx + pop rbx + pop rax + ret + +;;; func core, ver, snum +slversion crc16_t10dif, 00, 03, 011a +slversion crc32_ieee, 00, 03, 011b +slversion crc32_iscsi, 00, 03, 011c |