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fb34c5290c
Provides fast CRC32C with PCLMULQDQ instructions in Golang The white papers on CRC32C calculations with PCLMULQDQ instruction can be downloaded from: http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/crc-iscsi-polynomial-crc32-instruction-paper.pdf http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/fast-crc-computation-paper.pdf
140 lines
2.6 KiB
ArmAsm
140 lines
2.6 KiB
ArmAsm
/*
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* Mini Object Storage, (C) 2014 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License") ;
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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.file "cpufeatures.c"
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.text
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.type cpuid, @function
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cpuid:
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.LFB2:
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.cfi_startproc
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pushq %rbp
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.cfi_def_cfa_offset 16
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.cfi_offset 6, -16
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movq %rsp, %rbp
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.cfi_def_cfa_register 6
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pushq %rbx
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.cfi_offset 3, -24
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movq %rdi, -16(%rbp)
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movl %esi, -20(%rbp)
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movq -16(%rbp), %rax
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leaq 4(%rax), %r10
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movq -16(%rbp), %rax
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leaq 8(%rax), %r9
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movq -16(%rbp), %rax
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leaq 12(%rax), %r8
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movl -20(%rbp), %eax
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movl $0, %edx
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movl %edx, %ecx
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#APP
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# 21 "cpufeatures.c" 1
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cpuid
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# 0 "" 2
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#NO_APP
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movl %ebx, %esi
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movl %eax, %edi
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movq -16(%rbp), %rax
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movl %edi, (%rax)
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movl %esi, (%r10)
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movl %ecx, (%r9)
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movl %edx, (%r8)
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popq %rbx
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popq %rbp
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.cfi_def_cfa 7, 8
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ret
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.cfi_endproc
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.LFE2:
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.size cpuid, .-cpuid
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.globl has_sse41
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.type has_sse41, @function
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has_sse41:
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.LFB3:
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.cfi_startproc
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pushq %rbp
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.cfi_def_cfa_offset 16
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.cfi_offset 6, -16
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movq %rsp, %rbp
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.cfi_def_cfa_register 6
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subq $16, %rsp
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leaq -16(%rbp), %rax
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movl $1, %esi
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movq %rax, %rdi
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call cpuid
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movl -8(%rbp), %eax
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andl $524288, %eax
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testl %eax, %eax
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setne %al
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movzbl %al, %eax
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leave
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.cfi_def_cfa 7, 8
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ret
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.cfi_endproc
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.LFE3:
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.size has_sse41, .-has_sse41
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.globl has_avx
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.type has_avx, @function
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has_avx:
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.LFB4:
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.cfi_startproc
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pushq %rbp
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.cfi_def_cfa_offset 16
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.cfi_offset 6, -16
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movq %rsp, %rbp
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.cfi_def_cfa_register 6
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subq $16, %rsp
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leaq -16(%rbp), %rax
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movl $1, %esi
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movq %rax, %rdi
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call cpuid
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movl -8(%rbp), %eax
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andl $268435456, %eax
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testl %eax, %eax
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setne %al
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movzbl %al, %eax
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leave
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.cfi_def_cfa 7, 8
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ret
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.cfi_endproc
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.LFE4:
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.size has_avx, .-has_avx
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.globl has_avx2
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.type has_avx2, @function
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has_avx2:
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.LFB5:
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.cfi_startproc
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pushq %rbp
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.cfi_def_cfa_offset 16
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.cfi_offset 6, -16
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movq %rsp, %rbp
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.cfi_def_cfa_register 6
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subq $16, %rsp
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leaq -16(%rbp), %rax
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movl $7, %esi
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movq %rax, %rdi
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call cpuid
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movl -12(%rbp), %eax
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andl $32, %eax
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testl %eax, %eax
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setne %al
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movzbl %al, %eax
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leave
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.cfi_def_cfa 7, 8
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ret
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.cfi_endproc
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.LFE5:
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.size has_avx2, .-has_avx2
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.ident "GCC: (Ubuntu 4.8.2-19ubuntu1) 4.8.2"
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.section .note.GNU-stack,"",@progbits
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