857fa6b2a3
Clang assembler rejects ambiguous cmp instruction. BUG: 17302482 Change-Id: I74f49de87464541f9fe6fa288e4093a9fbf37120
306 lines
5.4 KiB
ArmAsm
306 lines
5.4 KiB
ArmAsm
/*
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Copyright (c) 2011 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_WCSCAT
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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 PARMS 4
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# define STR PARMS
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# define RETURN ret
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.text
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ENTRY (wcslen)
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mov STR(%esp), %edx
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#endif
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cmpl $0, (%edx)
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jz L(exit_tail0)
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cmpl $0, 4(%edx)
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jz L(exit_tail1)
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cmpl $0, 8(%edx)
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jz L(exit_tail2)
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cmpl $0, 12(%edx)
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jz L(exit_tail3)
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cmpl $0, 16(%edx)
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jz L(exit_tail4)
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cmpl $0, 20(%edx)
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jz L(exit_tail5)
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cmpl $0, 24(%edx)
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jz L(exit_tail6)
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cmpl $0, 28(%edx)
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jz L(exit_tail7)
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pxor %xmm0, %xmm0
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lea 32(%edx), %eax
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lea -16(%eax), %ecx
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and $-16, %eax
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pcmpeqd (%eax), %xmm0
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pmovmskb %xmm0, %edx
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pxor %xmm1, %xmm1
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm1
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pmovmskb %xmm1, %edx
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pxor %xmm2, %xmm2
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm2
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pmovmskb %xmm2, %edx
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pxor %xmm3, %xmm3
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm3
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pmovmskb %xmm3, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm0
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pmovmskb %xmm0, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm1
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pmovmskb %xmm1, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm2
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pmovmskb %xmm2, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm3
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pmovmskb %xmm3, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm0
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pmovmskb %xmm0, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm1
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pmovmskb %xmm1, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm2
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pmovmskb %xmm2, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm3
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pmovmskb %xmm3, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm0
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pmovmskb %xmm0, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm1
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pmovmskb %xmm1, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm2
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pmovmskb %xmm2, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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pcmpeqd (%eax), %xmm3
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pmovmskb %xmm3, %edx
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lea 16(%eax), %eax
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test %edx, %edx
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jnz L(exit)
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and $-0x40, %eax
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.p2align 4
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L(aligned_64_loop):
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movaps (%eax), %xmm0
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movaps 16(%eax), %xmm1
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movaps 32(%eax), %xmm2
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movaps 48(%eax), %xmm6
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pminub %xmm1, %xmm0
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pminub %xmm6, %xmm2
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pminub %xmm0, %xmm2
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pcmpeqd %xmm3, %xmm2
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pmovmskb %xmm2, %edx
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lea 64(%eax), %eax
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test %edx, %edx
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jz L(aligned_64_loop)
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pcmpeqd -64(%eax), %xmm3
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pmovmskb %xmm3, %edx
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lea 48(%ecx), %ecx
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test %edx, %edx
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jnz L(exit)
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pcmpeqd %xmm1, %xmm3
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pmovmskb %xmm3, %edx
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lea -16(%ecx), %ecx
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test %edx, %edx
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jnz L(exit)
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pcmpeqd -32(%eax), %xmm3
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pmovmskb %xmm3, %edx
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lea -16(%ecx), %ecx
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test %edx, %edx
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jnz L(exit)
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pcmpeqd %xmm6, %xmm3
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pmovmskb %xmm3, %edx
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lea -16(%ecx), %ecx
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test %edx, %edx
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jnz L(exit)
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jmp L(aligned_64_loop)
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.p2align 4
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L(exit):
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sub %ecx, %eax
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shr $2, %eax
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test %dl, %dl
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jz L(exit_high)
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mov %dl, %cl
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and $15, %cl
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jz L(exit_1)
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RETURN
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.p2align 4
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L(exit_high):
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mov %dh, %ch
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and $15, %ch
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jz L(exit_3)
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add $2, %eax
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RETURN
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.p2align 4
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L(exit_1):
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add $1, %eax
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RETURN
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.p2align 4
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L(exit_3):
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add $3, %eax
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RETURN
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.p2align 4
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L(exit_tail0):
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xor %eax, %eax
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RETURN
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.p2align 4
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L(exit_tail1):
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mov $1, %eax
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RETURN
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.p2align 4
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L(exit_tail2):
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mov $2, %eax
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RETURN
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.p2align 4
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L(exit_tail3):
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mov $3, %eax
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RETURN
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.p2align 4
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L(exit_tail4):
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mov $4, %eax
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RETURN
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.p2align 4
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L(exit_tail5):
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mov $5, %eax
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RETURN
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.p2align 4
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L(exit_tail6):
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mov $6, %eax
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RETURN
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.p2align 4
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L(exit_tail7):
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mov $7, %eax
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#ifndef USE_AS_WCSCAT
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RETURN
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END (wcslen)
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#endif
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