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125 lines
3.9 KiB
ArmAsm
125 lines
3.9 KiB
ArmAsm
/* Multiple versions of strcmp
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All versions must be listed in ifunc-impl-list.c.
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Copyright (C) 2010-2013 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, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <init-arch.h>
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#ifdef USE_AS_STRNCMP
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# define STRCMP strncmp
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# define __GI_STRCMP __GI_strncmp
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# define __STRCMP_IA32 __strncmp_ia32
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# define __STRCMP_SSSE3 __strncmp_ssse3
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# define __STRCMP_SSE4_2 __strncmp_sse4_2
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#elif defined USE_AS_STRCASECMP_L
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# define STRCMP __strcasecmp_l
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# define __GI_STRCMP __GI_strcasecmp_l
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# define __STRCMP_IA32 __strcasecmp_l_ia32
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# define __STRCMP_SSSE3 __strcasecmp_l_ssse3
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# define __STRCMP_SSE4_2 __strcasecmp_l_sse4_2
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#elif defined USE_AS_STRNCASECMP_L
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# define STRCMP __strncasecmp_l
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# define __GI_STRCMP __GI_strncasecmp_l
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# define __STRCMP_IA32 __strncasecmp_l_ia32
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# define __STRCMP_SSSE3 __strncasecmp_l_ssse3
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# define __STRCMP_SSE4_2 __strncasecmp_l_sse4_2
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#else
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# define STRCMP strcmp
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# define __GI_STRCMP __GI_strcmp
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# define __STRCMP_IA32 __strcmp_ia32
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# define __STRCMP_SSSE3 __strcmp_ssse3
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# define __STRCMP_SSE4_2 __strcmp_sse4_2
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#endif
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/* Define multiple versions only for the definition in libc. Don't
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define multiple versions for strncmp in static library since we
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need strncmp before the initialization happened. */
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#if (defined SHARED || !defined USE_AS_STRNCMP) && !defined NOT_IN_libc
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# ifdef SHARED
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.text
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ENTRY(STRCMP)
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.type STRCMP, @gnu_indirect_function
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pushl %ebx
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (ebx, 0)
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LOAD_PIC_REG(bx)
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cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
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jne 1f
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call __init_cpu_features
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1: leal __STRCMP_IA32@GOTOFF(%ebx), %eax
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testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx)
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jz 2f
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leal __STRCMP_SSSE3@GOTOFF(%ebx), %eax
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testl $bit_SSE4_2, CPUID_OFFSET+index_SSE4_2+__cpu_features@GOTOFF(%ebx)
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jz 2f
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testl $bit_Slow_SSE4_2, CPUID_OFFSET+index_Slow_SSE4_2+__cpu_features@GOTOFF(%ebx)
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jnz 2f
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leal __STRCMP_SSE4_2@GOTOFF(%ebx), %eax
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2: popl %ebx
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cfi_adjust_cfa_offset (-4)
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cfi_restore (ebx)
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ret
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END(STRCMP)
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# else
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.text
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ENTRY(STRCMP)
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.type STRCMP, @gnu_indirect_function
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cmpl $0, KIND_OFFSET+__cpu_features
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jne 1f
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call __init_cpu_features
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1: leal __STRCMP_IA32, %eax
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testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features
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jz 2f
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leal __STRCMP_SSSE3, %eax
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testl $bit_SSE4_2, CPUID_OFFSET+index_SSE4_2+__cpu_features
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jz 2f
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testl $bit_Slow_SSE4_2, CPUID_OFFSET+index_Slow_SSE4_2+__cpu_features
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jnz 2f
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leal __STRCMP_SSE4_2, %eax
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2: ret
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END(STRCMP)
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# endif
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# undef ENTRY
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# define ENTRY(name) \
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.type __STRCMP_IA32, @function; \
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.p2align 4; \
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.globl __STRCMP_IA32; \
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.hidden __STRCMP_IA32; \
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__STRCMP_IA32: cfi_startproc; \
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CALL_MCOUNT
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# undef END
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# define END(name) \
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cfi_endproc; .size __STRCMP_IA32, .-__STRCMP_IA32
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# ifdef SHARED
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# undef libc_hidden_builtin_def
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/* IFUNC doesn't work with the hidden functions in shared library since
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they will be called without setting up EBX needed for PLT which is
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used by IFUNC. */
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# define libc_hidden_builtin_def(name) \
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.globl __GI_STRCMP; __GI_STRCMP = __STRCMP_IA32
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# endif
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#endif
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#if !defined USE_AS_STRNCMP && !defined USE_AS_STRCASECMP_L \
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&& !defined USE_AS_STRNCASECMP_L
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# include "../strcmp.S"
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#endif
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