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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | /* * 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_fpcr state, tmp /* * Writes to fpcr may be self-synchronising, so avoid restoring * the register if it hasn't changed. */ mrs \tmp, fpcr cmp \tmp, \state b.eq 9999f msr fpcr, \state 9999: .endm /* Clobbers \state */ .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] fpsimd_restore_fpcr x\tmpnr, \state .endm .macro fpsimd_save_partial state, numnr, tmpnr1, tmpnr2 mrs x\tmpnr1, fpsr str w\numnr, [\state, #8] mrs x\tmpnr2, fpcr stp w\tmpnr1, w\tmpnr2, [\state] adr x\tmpnr1, 0f add \state, \state, x\numnr, lsl #4 sub x\tmpnr1, x\tmpnr1, x\numnr, lsl #1 br x\tmpnr1 stp q30, q31, [\state, #-16 * 30 - 16] stp q28, q29, [\state, #-16 * 28 - 16] stp q26, q27, [\state, #-16 * 26 - 16] stp q24, q25, [\state, #-16 * 24 - 16] stp q22, q23, [\state, #-16 * 22 - 16] stp q20, q21, [\state, #-16 * 20 - 16] stp q18, q19, [\state, #-16 * 18 - 16] stp q16, q17, [\state, #-16 * 16 - 16] stp q14, q15, [\state, #-16 * 14 - 16] stp q12, q13, [\state, #-16 * 12 - 16] stp q10, q11, [\state, #-16 * 10 - 16] stp q8, q9, [\state, #-16 * 8 - 16] stp q6, q7, [\state, #-16 * 6 - 16] stp q4, q5, [\state, #-16 * 4 - 16] stp q2, q3, [\state, #-16 * 2 - 16] stp q0, q1, [\state, #-16 * 0 - 16] 0: .endm .macro fpsimd_restore_partial state, tmpnr1, tmpnr2 ldp w\tmpnr1, w\tmpnr2, [\state] msr fpsr, x\tmpnr1 fpsimd_restore_fpcr x\tmpnr2, x\tmpnr1 adr x\tmpnr1, 0f ldr w\tmpnr2, [\state, #8] add \state, \state, x\tmpnr2, lsl #4 sub x\tmpnr1, x\tmpnr1, x\tmpnr2, lsl #1 br x\tmpnr1 ldp q30, q31, [\state, #-16 * 30 - 16] ldp q28, q29, [\state, #-16 * 28 - 16] ldp q26, q27, [\state, #-16 * 26 - 16] ldp q24, q25, [\state, #-16 * 24 - 16] ldp q22, q23, [\state, #-16 * 22 - 16] ldp q20, q21, [\state, #-16 * 20 - 16] ldp q18, q19, [\state, #-16 * 18 - 16] ldp q16, q17, [\state, #-16 * 16 - 16] ldp q14, q15, [\state, #-16 * 14 - 16] ldp q12, q13, [\state, #-16 * 12 - 16] ldp q10, q11, [\state, #-16 * 10 - 16] ldp q8, q9, [\state, #-16 * 8 - 16] ldp q6, q7, [\state, #-16 * 6 - 16] ldp q4, q5, [\state, #-16 * 4 - 16] ldp q2, q3, [\state, #-16 * 2 - 16] ldp q0, q1, [\state, #-16 * 0 - 16] 0: .endm |