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/* strrchr with SSE2 with bsf and bsr
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Copyright (C) 2011 Free Software Foundation, Inc.
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Contributed by Intel Corporation.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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# define CFI_PUSH(REG) \
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cfi_adjust_cfa_offset (4); \
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cfi_rel_offset (REG, 0)
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# define CFI_POP(REG) \
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cfi_adjust_cfa_offset (-4); \
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# define PUSH(REG) pushl REG; CFI_PUSH (REG)
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# define POP(REG) popl REG; CFI_POP (REG)
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ENTRY (__strrchr_sse2_bsf)
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movd STR2(%esp), %xmm1
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punpcklbw %xmm1, %xmm1
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punpcklbw %xmm1, %xmm1
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pshufd $0, %xmm1, %xmm1
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/* unaligned string. */
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/* Find where NULL is. */
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/* Check if there is a match. */
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jnz L(unaligned_match1)
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L(unaligned_return_value1):
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jnz L(unaligned_return_value1)
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/* Hancle unaligned string. */
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/* Find where NULL is. */
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/* Check if there is a match. */
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/* Remove the leading bytes. */
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jnz L(unaligned_match)
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L(unaligned_return_value):
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jnz L(unaligned_return_value)
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lea (%edi, %ecx), %esi
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/* Loop start on aligned string. */
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jnz L(return_value_1)
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END (__strrchr_sse2_bsf)