arm64: move FP-SIMD save/restore code to a macro
In order to be able to reuse the save-restore code in KVM, move
it to a pair of macros, similar to what the 32bit code does.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
new file mode 100644
index 0000000..bbec599
--- /dev/null
+++ b/arch/arm64/include/asm/fpsimdmacros.h
@@ -0,0 +1,64 @@
+/*
+ * FP/SIMD state saving and restoring macros
+ *
+ * Copyright (C) 2012 ARM Ltd.
+ * Author: Catalin Marinas <catalin.marinas@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+.macro fpsimd_save state, tmpnr
+ stp q0, q1, [\state, #16 * 0]
+ stp q2, q3, [\state, #16 * 2]
+ stp q4, q5, [\state, #16 * 4]
+ stp q6, q7, [\state, #16 * 6]
+ stp q8, q9, [\state, #16 * 8]
+ stp q10, q11, [\state, #16 * 10]
+ stp q12, q13, [\state, #16 * 12]
+ stp q14, q15, [\state, #16 * 14]
+ stp q16, q17, [\state, #16 * 16]
+ stp q18, q19, [\state, #16 * 18]
+ stp q20, q21, [\state, #16 * 20]
+ stp q22, q23, [\state, #16 * 22]
+ stp q24, q25, [\state, #16 * 24]
+ stp q26, q27, [\state, #16 * 26]
+ stp q28, q29, [\state, #16 * 28]
+ stp q30, q31, [\state, #16 * 30]!
+ mrs x\tmpnr, fpsr
+ str w\tmpnr, [\state, #16 * 2]
+ mrs x\tmpnr, fpcr
+ str w\tmpnr, [\state, #16 * 2 + 4]
+.endm
+
+.macro fpsimd_restore state, tmpnr
+ ldp q0, q1, [\state, #16 * 0]
+ ldp q2, q3, [\state, #16 * 2]
+ ldp q4, q5, [\state, #16 * 4]
+ ldp q6, q7, [\state, #16 * 6]
+ ldp q8, q9, [\state, #16 * 8]
+ ldp q10, q11, [\state, #16 * 10]
+ ldp q12, q13, [\state, #16 * 12]
+ ldp q14, q15, [\state, #16 * 14]
+ ldp q16, q17, [\state, #16 * 16]
+ ldp q18, q19, [\state, #16 * 18]
+ ldp q20, q21, [\state, #16 * 20]
+ ldp q22, q23, [\state, #16 * 22]
+ ldp q24, q25, [\state, #16 * 24]
+ ldp q26, q27, [\state, #16 * 26]
+ ldp q28, q29, [\state, #16 * 28]
+ ldp q30, q31, [\state, #16 * 30]!
+ ldr w\tmpnr, [\state, #16 * 2]
+ msr fpsr, x\tmpnr
+ ldr w\tmpnr, [\state, #16 * 2 + 4]
+ msr fpcr, x\tmpnr
+.endm