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/* Multiple versions of bzero Copyright (C) 2010 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <sysdep.h> #include <init-arch.h> /* Define multiple versions only for the definition in lib. */ #ifndef NOT_IN_libc # ifdef SHARED .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits .globl __i686.get_pc_thunk.bx .hidden __i686.get_pc_thunk.bx .p2align 4 .type __i686.get_pc_thunk.bx,@function __i686.get_pc_thunk.bx: movl (%esp), %ebx ret .text ENTRY(__bzero) .type __bzero, @gnu_indirect_function pushl %ebx cfi_adjust_cfa_offset (4) cfi_rel_offset (ebx, 0) call __i686.get_pc_thunk.bx addl $_GLOBAL_OFFSET_TABLE_, %ebx cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) jne 1f call __init_cpu_features 1: leal __bzero_ia32@GOTOFF(%ebx), %eax testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) jz 2f leal __bzero_sse2@GOTOFF(%ebx), %eax testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx) jz 2f leal __bzero_sse2_rep@GOTOFF(%ebx), %eax 2: popl %ebx cfi_adjust_cfa_offset (-4) cfi_restore (ebx) ret END(__bzero) # else .text ENTRY(__bzero) .type __bzero, @gnu_indirect_function cmpl $0, KIND_OFFSET+__cpu_features jne 1f call __init_cpu_features 1: leal __bzero_ia32, %eax testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features jz 2f leal __bzero_sse2, %eax testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features jz 2f leal __bzero_sse2_rep, %eax 2: ret END(__bzero) # endif # undef ENTRY # define ENTRY(name) \ .type __bzero_ia32, @function; \ .p2align 4; \ __bzero_ia32: cfi_startproc; \ CALL_MCOUNT # undef END # define END(name) \ cfi_endproc; .size __bzero_ia32, .-__bzero_ia32 # ifdef SHARED # undef libc_hidden_builtin_def /* IFUNC doesn't work with the hidden functions in shared library since they will be called without setting up EBX needed for PLT which is used by IFUNC. */ # define libc_hidden_builtin_def(name) \ .globl __GI___bzero; __GI___bzero = __bzero_ia32 # endif #endif #include "../bzero.S"
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