arm64/sme: Manually encode ZT0 load and store instructions

In order to avoid unrealistic toolchain requirements we manually encode the instructions for loading and storing ZT0. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
AsahiLinux · Jan 20, 2023 · 2cdeecd · 2cdeecd
1 parent 8ef5560
commit 2cdeecd
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
@@ -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