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isa-l/mem/mem_zero_detect_avx.asm

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mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright(c) 2011-2018 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.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
%include "reg_sizes.asm"
%ifidn __OUTPUT_FORMAT__, elf64
%define arg0 rdi
%define arg1 rsi
%define arg2 rdx
%define arg3 rcx
%define arg4 r8
%define arg5 r9
%define tmp r11
%define tmpb r11b
%define tmp3 arg4
%define return rax
x86: Add ENDBR32/ENDBR64 at function entries for Intel CET To support Intel CET, all indirect branch targets must start with ENDBR32/ENDBR64. Here is a patch to define endbranch and add it to function entries in x86 assembly codes which are indirect branch targets as discovered by running testsuite on Intel CET machine and visual inspection. Verified with $ CC="gcc -Wl,-z,cet-report=error -fcf-protection" CXX="g++ -Wl,-z,cet-report=error -fcf-protection" .../configure x86_64-linux $ make -j8 $ make -j8 check with both nasm and yasm on both CET and non-CET machines. Change-Id: I9822578e7294fb5043a64ab7de5c41de81a7d337 Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
2020-05-22 19:46:50 +02:00
%define func(x) x: endbranch
mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
%define FUNC_SAVE
%define FUNC_RESTORE
%endif
%ifidn __OUTPUT_FORMAT__, win64
%define arg0 rcx
%define arg1 rdx
%define arg2 r8
%define arg3 r9
%define tmp r11
%define tmpb r11b
%define tmp3 r10
%define return rax
%define func(x) proc_frame x
%macro FUNC_SAVE 0
end_prolog
%endmacro
%macro FUNC_RESTORE 0
%endmacro
%endif
%define src arg0
%define len arg1
mem: Move new mem_zero_detect function to avx2 New mem_zero_detect function will fail on avx only machines. Change-Id: I3bca49bff886f9c130c89e8c74b31110e9bac76b Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
2021-10-01 02:04:08 +02:00
%define ptr arg2
%define pos return
mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
default rel
[bits 64]
section .text
mem: Move new mem_zero_detect function to avx2 New mem_zero_detect function will fail on avx only machines. Change-Id: I3bca49bff886f9c130c89e8c74b31110e9bac76b Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
2021-10-01 02:04:08 +02:00
align 16
build: Fix for windows to allow nasm use Previously windows build could only use yasm because some procedural items such as proc_start were not supported by nasm. This adds a few macros and fixes so nasm can be used to build on windows. Change-Id: Ia05dc3ff482f33b0f915bb1be3c7df5e4a753b3a Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
2020-03-17 00:23:55 +01:00
mk_global mem_zero_detect_avx, function
mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
func(mem_zero_detect_avx)
FUNC_SAVE
mem: Move new mem_zero_detect function to avx2 New mem_zero_detect function will fail on avx only machines. Change-Id: I3bca49bff886f9c130c89e8c74b31110e9bac76b Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
2021-10-01 02:04:08 +02:00
mov pos, 0
sub len, 4*32
jle .mem_z_small_block
mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
.mem_z_loop:
mem: Move new mem_zero_detect function to avx2 New mem_zero_detect function will fail on avx only machines. Change-Id: I3bca49bff886f9c130c89e8c74b31110e9bac76b Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
2021-10-01 02:04:08 +02:00
vmovdqu ymm0, [src+pos]
vmovdqu ymm1, [src+pos+1*32]
vmovdqu ymm2, [src+pos+2*32]
vmovdqu ymm3, [src+pos+3*32]
vptest ymm0, ymm0
jnz .return_fail
vptest ymm1, ymm1
jnz .return_fail
vptest ymm2, ymm2
jnz .return_fail
vptest ymm3, ymm3
jnz .return_fail
add pos, 4*32
cmp pos, len
jl .mem_z_loop
.mem_z_last_block:
vmovdqu ymm0, [src+len]
vmovdqu ymm1, [src+len+1*32]
vmovdqu ymm2, [src+len+2*32]
vmovdqu ymm3, [src+len+3*32]
vptest ymm0, ymm0
jnz .return_fail
vptest ymm1, ymm1
jnz .return_fail
vptest ymm2, ymm2
jnz .return_fail
vptest ymm3, ymm3
jnz .return_fail
.return_pass:
mov return, 0
mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
FUNC_RESTORE
ret
.mem_z_small_block:
mem: Move new mem_zero_detect function to avx2 New mem_zero_detect function will fail on avx only machines. Change-Id: I3bca49bff886f9c130c89e8c74b31110e9bac76b Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
2021-10-01 02:04:08 +02:00
add len, 4*32
cmp len, 2*32
jl .mem_z_lt64
vmovdqu ymm0, [src]
vmovdqu ymm1, [src+32]
vmovdqu ymm2, [src+len-2*32]
vmovdqu ymm3, [src+len-1*32]
vptest ymm0, ymm0
jnz .return_fail
vptest ymm1, ymm1
jnz .return_fail
vptest ymm2, ymm2
jnz .return_fail
vptest ymm3, ymm3
jnz .return_fail
jmp .return_pass
.mem_z_lt64:
cmp len, 32
jl .mem_z_lt32
vmovdqu ymm0, [src]
vmovdqu ymm1, [src+len-32]
vptest ymm0, ymm0
jnz .return_fail
vptest ymm1, ymm1
jnz .return_fail
jmp .return_pass
.mem_z_lt32:
cmp len, 16
jl .mem_z_lt16
vmovdqu xmm0, [src]
vmovdqu xmm1, [src+len-16]
vptest xmm0, xmm0
jnz .return_fail
vptest xmm1, xmm1
jnz .return_fail
jmp .return_pass
.mem_z_lt16:
cmp len, 8
jl .mem_z_lt8
mov tmp, [src]
mov tmp3,[src+len-8]
or tmp, tmp3
test tmp, tmp
jnz .return_fail
jmp .return_pass
.mem_z_lt8:
cmp len, 0
je .return_pass
.mem_z_1byte_loop:
mov tmpb, [src+pos]
cmp tmpb, 0
jnz .return_fail
add pos, 1
cmp pos, len
jl .mem_z_1byte_loop
jmp .return_pass
.return_fail:
mov return, 1
FUNC_RESTORE
mem: Add zero detect memory functions This patch introduces the base, avx and sse optimized zero detect memory function. The zero detect memory function tests if a memory region is all zeroes. If all the bytes in the memory region are zero, the function return a zero. Otherwise, if the memory region has non zero bytes, the zero detect function returns a 1. Change-Id: If965badf750377124d0067d09f888d0419554998 Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
2016-03-26 10:44:32 +01:00
ret
endproc_frame
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