diff options
Diffstat (limited to 'sysdeps/i386/multiarch/memmove_chk.S')
| -rw-r--r-- | sysdeps/i386/multiarch/memmove_chk.S | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sysdeps/i386/multiarch/memmove_chk.S b/sysdeps/i386/multiarch/memmove_chk.S new file mode 100644 index 0000000000..15e47d58db --- /dev/null +++ b/sysdeps/i386/multiarch/memmove_chk.S @@ -0,0 +1,113 @@ +/* Multiple versions of __memmove_chk + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2010-2015 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/>. */ + +/* Define multiple versions only for the definition in lib. */ +#if IS_IN (libc) +# include <sysdep.h> +# include <init-arch.h> + + .text +ENTRY(__memmove_chk) + .type __memmove_chk, @gnu_indirect_function + LOAD_GOT_AND_RTLD_GLOBAL_RO +# if !SUPPORT_I686 + LOAD_FUNC_GOT_EAX (__memmove_chk_i386) + HAS_ARCH_FEATURE (I686) + jz 2f +# endif + LOAD_FUNC_GOT_EAX (__memmove_chk_i686) + HAS_CPU_FEATURE (SSE2) + jz 2f + LOAD_FUNC_GOT_EAX (__memmove_chk_sse2_unaligned) + HAS_ARCH_FEATURE (Fast_Unaligned_Load) + jnz 2f + HAS_CPU_FEATURE (SSSE3) + jz 2f + LOAD_FUNC_GOT_EAX (__memmove_chk_ssse3) + HAS_CPU_FEATURE (Fast_Rep_String) + jz 2f + LOAD_FUNC_GOT_EAX (__memmove_chk_ssse3_rep) +2: ret +END(__memmove_chk) + +# ifndef SHARED + .type __memmove_chk_sse2_unaligned, @function + .p2align 4; +__memmove_chk_sse2_unaligned: + cfi_startproc + CALL_MCOUNT + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp __memmove_sse2_unaligned + cfi_endproc + .size __memmove_chk_sse2_unaligned, .-__memmove_chk_sse2_unaligned + + .type __memmove_chk_ssse3, @function + .p2align 4; +__memmove_chk_ssse3: + cfi_startproc + CALL_MCOUNT + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp __memmove_ssse3 + cfi_endproc + .size __memmove_chk_ssse3, .-__memmove_chk_ssse3 + + .type __memmove_chk_ssse3_rep, @function + .p2align 4; +__memmove_chk_ssse3_rep: + cfi_startproc + CALL_MCOUNT + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp __memmove_ssse3_rep + cfi_endproc + .size __memmove_chk_ssse3_rep, .-__memmove_chk_ssse3_rep + + .type __memmove_chk_i686, @function + .p2align 4; +__memmove_chk_i686: + cfi_startproc + CALL_MCOUNT + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp __memmove_i686 + cfi_endproc + .size __memmove_chk_i686, .-__memmove_chk_i686 + +# if !SUPPORT_I686 + .type __memmove_chk_i386, @function + .p2align 4; +__memmove_chk_i386: + cfi_startproc + CALL_MCOUNT + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp __memmove_i386 + cfi_endproc + .size __memmove_chk_i386, .-__memmove_chk_i386 +# endif +# endif +#endif |