aboutsummaryrefslogtreecommitdiff
path: root/REORG.TODO/sysdeps/i386/i686/multiarch/strcpy.S
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/sysdeps/i386/i686/multiarch/strcpy.S')
-rw-r--r--REORG.TODO/sysdeps/i386/i686/multiarch/strcpy.S116
1 files changed, 116 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/i686/multiarch/strcpy.S b/REORG.TODO/sysdeps/i386/i686/multiarch/strcpy.S
new file mode 100644
index 0000000000..ffbc03c6d5
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/i686/multiarch/strcpy.S
@@ -0,0 +1,116 @@
+/* Multiple versions of strcpy
+ All versions must be listed in ifunc-impl-list.c.
+ Copyright (C) 2011-2017 Free Software Foundation, Inc.
+ Contributed by Intel Corporation.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+#include <init-arch.h>
+
+#if !defined (USE_AS_STPCPY) && !defined (USE_AS_STRNCPY)
+# ifndef STRCPY
+# define STRCPY strcpy
+# endif
+#endif
+
+#ifdef USE_AS_STPCPY
+# ifdef USE_AS_STRNCPY
+# define STRCPY_SSSE3 __stpncpy_ssse3
+# define STRCPY_SSE2 __stpncpy_sse2
+# define STRCPY_IA32 __stpncpy_ia32
+# define __GI_STRCPY __GI_stpncpy
+# define __GI___STRCPY __GI___stpncpy
+# else
+# define STRCPY_SSSE3 __stpcpy_ssse3
+# define STRCPY_SSE2 __stpcpy_sse2
+# define STRCPY_IA32 __stpcpy_ia32
+# define __GI_STRCPY __GI_stpcpy
+# define __GI___STRCPY __GI___stpcpy
+# endif
+#else
+# ifdef USE_AS_STRNCPY
+# define STRCPY_SSSE3 __strncpy_ssse3
+# define STRCPY_SSE2 __strncpy_sse2
+# define STRCPY_IA32 __strncpy_ia32
+# define __GI_STRCPY __GI_strncpy
+# else
+# define STRCPY_SSSE3 __strcpy_ssse3
+# define STRCPY_SSE2 __strcpy_sse2
+# define STRCPY_IA32 __strcpy_ia32
+# define __GI_STRCPY __GI_strcpy
+# endif
+#endif
+
+
+/* Define multiple versions only for the definition in libc. Don't
+ define multiple versions for strncpy in static library since we
+ need strncpy before the initialization happened. */
+#if IS_IN (libc)
+
+ .text
+ENTRY(STRCPY)
+ .type STRCPY, @gnu_indirect_function
+ LOAD_GOT_AND_RTLD_GLOBAL_RO
+ LOAD_FUNC_GOT_EAX (STRCPY_IA32)
+ HAS_CPU_FEATURE (SSE2)
+ jz 2f
+ LOAD_FUNC_GOT_EAX (STRCPY_SSE2)
+ HAS_ARCH_FEATURE (Fast_Unaligned_Load)
+ jnz 2f
+ HAS_CPU_FEATURE (SSSE3)
+ jz 2f
+ LOAD_FUNC_GOT_EAX (STRCPY_SSSE3)
+2: ret
+END(STRCPY)
+
+# undef ENTRY
+# define ENTRY(name) \
+ .type STRCPY_IA32, @function; \
+ .align 16; \
+ .globl STRCPY_IA32; \
+ .hidden STRCPY_IA32; \
+ STRCPY_IA32: cfi_startproc; \
+ CALL_MCOUNT
+# undef END
+# define END(name) \
+ cfi_endproc; .size STRCPY_IA32, .-STRCPY_IA32
+
+# ifdef SHARED
+# undef libc_hidden_builtin_def
+/* It doesn't make sense to send libc-internal strcpy calls through a PLT.
+ The speedup we get from using SSSE3 instruction is likely eaten away
+ by the indirect call in the PLT. */
+# define libc_hidden_builtin_def(name) \
+ .globl __GI_STRCPY; __GI_STRCPY = STRCPY_IA32
+# undef libc_hidden_def
+# define libc_hidden_def(name) \
+ .globl __GI___STRCPY; __GI___STRCPY = STRCPY_IA32
+
+# endif
+#endif
+
+#ifdef USE_AS_STPCPY
+# ifdef USE_AS_STRNCPY
+# include "../../stpncpy.S"
+# else
+# include "../../i586/stpcpy.S"
+# endif
+#else
+# ifndef USE_AS_STRNCPY
+# include "../../i586/strcpy.S"
+# endif
+#endif