Commit 6d51b188 authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

kselftest/arm64: Add manual encodings for SME instructions 



As for the kernel so that we don't have ambitious toolchain requirements
to build the tests manually encode some of the SVE instructions.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220419112247.711548-29-broonie@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent e2d9642a

tools/testing/selftests/arm64/fp/sme-inst.h

0 → 100644
+51 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

// Copyright (C) 2021-2 ARM Limited.

// Original author: Mark Brown <broonie@kernel.org>



#ifndef SME_INST_H

#define SME_INST_H



/*

 * RDSVL X\nx, #\imm

 */

.macro rdsvl nx, imm

	.inst	0x4bf5800			\

		| (\imm << 5)			\

		| (\nx)

.endm



.macro smstop

	msr	S0_3_C4_C6_3, xzr

.endm



.macro smstart_za

	msr	S0_3_C4_C5_3, xzr

.endm



.macro smstart_sm

	msr	S0_3_C4_C3_3, xzr

.endm



/*

 * LDR (vector to ZA array):

 *	LDR ZA[\nw, #\offset], [X\nxbase, #\offset, MUL VL]

 */

.macro _ldr_za nw, nxbase, offset=0

	.inst	0xe1000000			\

		| (((\nw) & 3) << 13)		\

		| ((\nxbase) << 5)		\

		| ((\offset) & 7)

.endm



/*

 * STR (vector from ZA array):

 *	STR ZA[\nw, #\offset], [X\nxbase, #\offset, MUL VL]

 */

.macro _str_za nw, nxbase, offset=0

	.inst	0xe1200000			\

		| (((\nw) & 3) << 13)		\

		| ((\nxbase) << 5)		\

		| ((\offset) & 7)

.endm



#endif