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117 lines
3.3 KiB
ArmAsm
117 lines
3.3 KiB
ArmAsm
/* Multiple versions of __memset_chk
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Copyright (C) 2010 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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02111-1307 USA. */
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#include <sysdep.h>
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#include <init-arch.h>
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/* Define multiple versions only for the definition in lib. */
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#ifndef NOT_IN_libc
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# ifdef SHARED
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.section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
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.globl __i686.get_pc_thunk.bx
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.hidden __i686.get_pc_thunk.bx
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.p2align 4
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.type __i686.get_pc_thunk.bx,@function
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__i686.get_pc_thunk.bx:
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movl (%esp), %ebx
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ret
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.text
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ENTRY(__memset_chk)
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.type __memset_chk, @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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call __i686.get_pc_thunk.bx
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addl $_GLOBAL_OFFSET_TABLE_, %ebx
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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 __memset_chk_ia32@GOTOFF(%ebx), %eax
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testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
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jz 2f
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leal __memset_chk_sse2@GOTOFF(%ebx), %eax
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testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx)
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jz 2f
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leal __memset_chk_sse2_rep@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(__memset_chk)
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strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
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.section .gnu.warning.__memset_zero_constant_len_parameter
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.string "memset used with constant zero length parameter; this could be due to transposed parameters"
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# else
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.text
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ENTRY(__memset_chk)
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.type __memset_chk, @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 __memset_chk_ia32, %eax
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testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features
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jz 2f
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leal __memset_chk_sse2, %eax
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testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features
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jz 2f
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leal __memset_chk_sse2_rep, %eax
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2: ret
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END(__memset_chk)
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.type __memset_chk_sse2, @function
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.p2align 4;
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__memset_chk_sse2:
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cfi_startproc
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CALL_MCOUNT
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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jb __chk_fail
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jmp __memset_sse2
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cfi_endproc
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.size __memset_chk_sse2, .-__memset_chk_sse2
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.type __memset_chk_sse2_rep, @function
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.p2align 4;
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__memset_chk_sse2_rep:
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cfi_startproc
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CALL_MCOUNT
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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jb __chk_fail
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jmp __memset_sse2_rep
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cfi_endproc
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.size __memset_chk_sse2_rep, .-__memset_chk_sse2_rep
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.type __memset_chk_ia32, @function
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.p2align 4;
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__memset_chk_ia32:
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cfi_startproc
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CALL_MCOUNT
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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jb __chk_fail
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jmp __memset_ia32
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cfi_endproc
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.size __memset_chk_ia32, .-__memset_chk_ia32
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# endif
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#endif
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