Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
1.6 KiB
ArmAsm
72 lines
1.6 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (C) 2023 Rivos Inc. */
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm.h>
|
|
|
|
.text
|
|
|
|
/* void __riscv_copy_words_unaligned(void *, const void *, size_t) */
|
|
/* Performs a memcpy without aligning buffers, using word loads and stores. */
|
|
/* Note: The size is truncated to a multiple of 8 * SZREG */
|
|
SYM_FUNC_START(__riscv_copy_words_unaligned)
|
|
andi a4, a2, ~((8*SZREG)-1)
|
|
beqz a4, 2f
|
|
add a3, a1, a4
|
|
1:
|
|
REG_L a4, 0(a1)
|
|
REG_L a5, SZREG(a1)
|
|
REG_L a6, 2*SZREG(a1)
|
|
REG_L a7, 3*SZREG(a1)
|
|
REG_L t0, 4*SZREG(a1)
|
|
REG_L t1, 5*SZREG(a1)
|
|
REG_L t2, 6*SZREG(a1)
|
|
REG_L t3, 7*SZREG(a1)
|
|
REG_S a4, 0(a0)
|
|
REG_S a5, SZREG(a0)
|
|
REG_S a6, 2*SZREG(a0)
|
|
REG_S a7, 3*SZREG(a0)
|
|
REG_S t0, 4*SZREG(a0)
|
|
REG_S t1, 5*SZREG(a0)
|
|
REG_S t2, 6*SZREG(a0)
|
|
REG_S t3, 7*SZREG(a0)
|
|
addi a0, a0, 8*SZREG
|
|
addi a1, a1, 8*SZREG
|
|
bltu a1, a3, 1b
|
|
|
|
2:
|
|
ret
|
|
SYM_FUNC_END(__riscv_copy_words_unaligned)
|
|
|
|
/* void __riscv_copy_bytes_unaligned(void *, const void *, size_t) */
|
|
/* Performs a memcpy without aligning buffers, using only byte accesses. */
|
|
/* Note: The size is truncated to a multiple of 8 */
|
|
SYM_FUNC_START(__riscv_copy_bytes_unaligned)
|
|
andi a4, a2, ~(8-1)
|
|
beqz a4, 2f
|
|
add a3, a1, a4
|
|
1:
|
|
lb a4, 0(a1)
|
|
lb a5, 1(a1)
|
|
lb a6, 2(a1)
|
|
lb a7, 3(a1)
|
|
lb t0, 4(a1)
|
|
lb t1, 5(a1)
|
|
lb t2, 6(a1)
|
|
lb t3, 7(a1)
|
|
sb a4, 0(a0)
|
|
sb a5, 1(a0)
|
|
sb a6, 2(a0)
|
|
sb a7, 3(a0)
|
|
sb t0, 4(a0)
|
|
sb t1, 5(a0)
|
|
sb t2, 6(a0)
|
|
sb t3, 7(a0)
|
|
addi a0, a0, 8
|
|
addi a1, a1, 8
|
|
bltu a1, a3, 1b
|
|
|
|
2:
|
|
ret
|
|
SYM_FUNC_END(__riscv_copy_bytes_unaligned)
|