a020a244ae
Add following functions: bcopy, bzero, memcpy, memmove, memset, stpcpy, stpncpy, strcat, strcpy, strlen, strncat, strncpy, memcmp, strcmp, strncmp. Set all these functions as the default ones. Change-Id: Ic66b250ad8c349a43d25e2d4dea075604f6df6ac Signed-off-by: Varvara Rainchik <varvara.rainchik@intel.com>
295 lines
5.5 KiB
ArmAsm
295 lines
5.5 KiB
ArmAsm
/*
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Copyright (c) 2014, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef USE_AS_STRCAT
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#ifndef STRLEN
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# define STRLEN strlen
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#endif
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#ifndef L
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# define L(label) .L##label
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#endif
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#ifndef cfi_startproc
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# define cfi_startproc .cfi_startproc
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#endif
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#ifndef cfi_endproc
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# define cfi_endproc .cfi_endproc
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#endif
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#ifndef ENTRY
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# define ENTRY(name) \
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.type name, @function; \
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.globl name; \
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.p2align 4; \
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name: \
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cfi_startproc
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#endif
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#ifndef END
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# define END(name) \
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cfi_endproc; \
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.size name, .-name
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#endif
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#define RETURN ret
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.section .text.sse2,"ax",@progbits
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ENTRY (STRLEN)
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/* end ifndef USE_AS_STRCAT */
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#endif
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xor %rax, %rax
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mov %edi, %ecx
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and $0x3f, %ecx
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pxor %xmm0, %xmm0
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cmp $0x30, %ecx
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ja L(next)
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movdqu (%rdi), %xmm1
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit_less16)
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mov %rdi, %rax
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and $-16, %rax
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jmp L(align16_start)
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L(next):
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mov %rdi, %rax
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and $-16, %rax
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pcmpeqb (%rax), %xmm0
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mov $-1, %r10d
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sub %rax, %rcx
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shl %cl, %r10d
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pmovmskb %xmm0, %edx
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and %r10d, %edx
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jnz L(exit)
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L(align16_start):
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pxor %xmm0, %xmm0
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pxor %xmm1, %xmm1
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pxor %xmm2, %xmm2
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pxor %xmm3, %xmm3
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pcmpeqb 16(%rax), %xmm0
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit16)
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pcmpeqb 32(%rax), %xmm1
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pmovmskb %xmm1, %edx
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test %edx, %edx
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jnz L(exit32)
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pcmpeqb 48(%rax), %xmm2
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pmovmskb %xmm2, %edx
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test %edx, %edx
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jnz L(exit48)
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pcmpeqb 64(%rax), %xmm3
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pmovmskb %xmm3, %edx
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test %edx, %edx
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jnz L(exit64)
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pcmpeqb 80(%rax), %xmm0
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add $64, %rax
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit16)
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pcmpeqb 32(%rax), %xmm1
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pmovmskb %xmm1, %edx
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test %edx, %edx
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jnz L(exit32)
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pcmpeqb 48(%rax), %xmm2
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pmovmskb %xmm2, %edx
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test %edx, %edx
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jnz L(exit48)
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pcmpeqb 64(%rax), %xmm3
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pmovmskb %xmm3, %edx
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test %edx, %edx
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jnz L(exit64)
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pcmpeqb 80(%rax), %xmm0
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add $64, %rax
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit16)
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pcmpeqb 32(%rax), %xmm1
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pmovmskb %xmm1, %edx
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test %edx, %edx
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jnz L(exit32)
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pcmpeqb 48(%rax), %xmm2
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pmovmskb %xmm2, %edx
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test %edx, %edx
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jnz L(exit48)
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pcmpeqb 64(%rax), %xmm3
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pmovmskb %xmm3, %edx
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test %edx, %edx
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jnz L(exit64)
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pcmpeqb 80(%rax), %xmm0
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add $64, %rax
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit16)
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pcmpeqb 32(%rax), %xmm1
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pmovmskb %xmm1, %edx
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test %edx, %edx
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jnz L(exit32)
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pcmpeqb 48(%rax), %xmm2
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pmovmskb %xmm2, %edx
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test %edx, %edx
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jnz L(exit48)
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pcmpeqb 64(%rax), %xmm3
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pmovmskb %xmm3, %edx
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test %edx, %edx
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jnz L(exit64)
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test $0x3f, %rax
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jz L(align64_loop)
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pcmpeqb 80(%rax), %xmm0
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add $80, %rax
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit)
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test $0x3f, %rax
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jz L(align64_loop)
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pcmpeqb 16(%rax), %xmm1
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add $16, %rax
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pmovmskb %xmm1, %edx
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test %edx, %edx
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jnz L(exit)
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test $0x3f, %rax
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jz L(align64_loop)
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pcmpeqb 16(%rax), %xmm2
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add $16, %rax
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pmovmskb %xmm2, %edx
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test %edx, %edx
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jnz L(exit)
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test $0x3f, %rax
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jz L(align64_loop)
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pcmpeqb 16(%rax), %xmm3
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add $16, %rax
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pmovmskb %xmm3, %edx
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test %edx, %edx
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jnz L(exit)
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add $16, %rax
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.p2align 4
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L(align64_loop):
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movaps (%rax), %xmm4
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pminub 16(%rax), %xmm4
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movaps 32(%rax), %xmm5
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pminub 48(%rax), %xmm5
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add $64, %rax
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pminub %xmm4, %xmm5
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pcmpeqb %xmm0, %xmm5
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pmovmskb %xmm5, %edx
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test %edx, %edx
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jz L(align64_loop)
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pcmpeqb -64(%rax), %xmm0
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sub $80, %rax
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pmovmskb %xmm0, %edx
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test %edx, %edx
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jnz L(exit16)
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pcmpeqb 32(%rax), %xmm1
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pmovmskb %xmm1, %edx
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test %edx, %edx
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jnz L(exit32)
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pcmpeqb 48(%rax), %xmm2
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pmovmskb %xmm2, %edx
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test %edx, %edx
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jnz L(exit48)
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pcmpeqb 64(%rax), %xmm3
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pmovmskb %xmm3, %edx
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sub %rdi, %rax
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bsf %rdx, %rdx
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add %rdx, %rax
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add $64, %rax
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RETURN
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.p2align 4
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L(exit):
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sub %rdi, %rax
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L(exit_less16):
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bsf %rdx, %rdx
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add %rdx, %rax
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RETURN
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.p2align 4
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L(exit16):
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sub %rdi, %rax
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bsf %rdx, %rdx
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add %rdx, %rax
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add $16, %rax
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RETURN
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.p2align 4
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L(exit32):
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sub %rdi, %rax
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bsf %rdx, %rdx
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add %rdx, %rax
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add $32, %rax
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RETURN
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.p2align 4
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L(exit48):
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sub %rdi, %rax
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bsf %rdx, %rdx
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add %rdx, %rax
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add $48, %rax
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RETURN
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.p2align 4
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L(exit64):
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sub %rdi, %rax
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bsf %rdx, %rdx
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add %rdx, %rax
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add $64, %rax
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#ifndef USE_AS_STRCAT
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RETURN
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END (STRLEN)
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#endif
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