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747ef469ff
Resolves: BZ #15627 Add an assembler version of rtld-memset to avoid using SSE registers.
38 lines
1.2 KiB
ArmAsm
38 lines
1.2 KiB
ArmAsm
/* memset implementation for the dynamic linker. This is separate from the
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libc implementation to avoid writing to SSE registers.
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Copyright (C) 2013 Free Software Foundation, Inc.
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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 "asm-syntax.h"
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.text
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/* void *memset (void *dest, char c, size_t count)
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dest => %rdi
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c => %rsi
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count => %rdx */
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ENTRY (memset)
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mov %rdx, %rcx
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movzbl %sil, %eax
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mov %rdi, %rdx
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rep stosb
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mov %rdx, %rax
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ret
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END (memset)
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libc_hidden_builtin_def (memset)
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