linux-stable/arch/xtensa/lib/bswapdi2.S

/* SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0 */
#include <linux/linkage.h>
#include <asm/asmmacro.h>
#include <asm/core.h>

ENTRY(__bswapdi2)

	abi_entry_default
	ssai	8
	srli	a4, a2, 16
	src	a4, a4, a2
	src	a4, a4, a4
	src	a4, a2, a4
	srli	a2, a3, 16
	src	a2, a2, a3
	src	a2, a2, a2
	src	a2, a3, a2
	mov	a3, a4
	abi_ret_default

ENDPROC(__bswapdi2)
EXPORT_SYMBOL(__bswapdi2)
xtensa: add __bswap{si,di}2 helpers gcc-13 may generate calls for __bswap{si,di}2. This breaks the kernel build when optimization for size is selected. Add __bswap{si,di}2 helpers to fix that. Cc: stable@vger.kernel.org Fixes: 19c5699f9aff ("xtensa: don't link with libgcc") Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 2023-05-07 00:10:36 +00:00			`/* SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0 */`
			`#include <linux/linkage.h>`
			`#include <asm/asmmacro.h>`
			`#include <asm/core.h>`

			`ENTRY(__bswapdi2)`

			`abi_entry_default`
			`ssai 8`
			`srli a4, a2, 16`
			`src a4, a4, a2`
			`src a4, a4, a4`
			`src a4, a2, a4`
			`srli a2, a3, 16`
			`src a2, a2, a3`
			`src a2, a2, a2`
			`src a2, a3, a2`
			`mov a3, a4`
			`abi_ret_default`

			`ENDPROC(__bswapdi2)`
xtensa: add asm-prototypes.h Move assembly source prototypes from xtensa_ksyms.c to asm/asm-prototypes.h, move corresponding EXPORT_SYMBOLs to the assembly sources and enable HAVE_ASM_MODVERSIONS for xtensa. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> 2023-05-11 20:53:08 +00:00			`EXPORT_SYMBOL(__bswapdi2)`