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arm64/sme: Manually encode ZT0 load and store instructions

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In order to avoid unrealistic toolchain requirements we manually encode the
instructions for loading and storing ZT0.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221208-arm64-sme2-v4-6-f2fa0aef982f@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2023-01-16 16:04:41 +00:00 committed by Catalin Marinas
parent 8ef55603b8
commit 2cdeecdb95
1 changed files with 22 additions and 0 deletions
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22
arch/arm64/include/asm/fpsimdmacros.h
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@ -220,6 +220,28 @@
| ((\offset) & 7)
.endm
/*
* LDR (ZT0)
*
* LDR ZT0, nx
*/
.macro _ldr_zt nx
_check_general_reg \nx
.inst 0xe11f8000 \
| (\nx << 5)
.endm
/*
* STR (ZT0)
*
* STR ZT0, nx
*/
.macro _str_zt nx
_check_general_reg \nx
.inst 0xe13f8000 \
| (\nx << 5)
.endm
/*
* Zero the entire ZA array
* ZERO ZA