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587a1290a1
For CPU implementations that can perform unaligned accesses with little or no performance penalty, create a memcpy implementation that does not bother aligning buffers. It will use a block of integer registers, a single integer register, and fall back to bytewise copy for the remainder. Signed-off-by: Evan Green <evan@rivosinc.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
26 lines
1.1 KiB
C
26 lines
1.1 KiB
C
/* memcopy.h -- definitions for memory copy functions. RISC-V version.
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Copyright (C) 2024 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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<https://www.gnu.org/licenses/>. */
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#include <sysdeps/generic/memcopy.h>
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/* Redefine the generic memcpy implementation to __memcpy_generic, so
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the memcpy ifunc can select between generic and special versions.
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In rtld, don't bother with all the ifunciness. */
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#if IS_IN (libc)
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#define MEMCPY __memcpy_generic
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#endif
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