From cfc5180e5a1b5f41f4936c4945a395f4d8885d66 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Mon, 12 Nov 2012 13:24:27 +0000 Subject: 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 Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/fpsimdmacros.h | 64 +++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 arch/arm64/include/asm/fpsimdmacros.h (limited to 'arch/arm64/include/asm') diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h new file mode 100644 index 000000000000..bbec599c96bd --- /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 + * + * 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 . + */ + +.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 -- cgit v1.2.3