/* * Copyright (c) Atmosphère-NX * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope 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 . */ /* ams::kern::arch::arm64::cpu::SynchronizeAllCoresImpl(int *sync_var, int num_cores) */ .section .text._ZN3ams4kern4arch5arm643cpu23SynchronizeAllCoresImplEPii, "ax", %progbits .global _ZN3ams4kern4arch5arm643cpu23SynchronizeAllCoresImplEPii .type _ZN3ams4kern4arch5arm643cpu23SynchronizeAllCoresImplEPii, %function _ZN3ams4kern4arch5arm643cpu23SynchronizeAllCoresImplEPii: /* Loop until the sync var is less than num cores. */ sevl 1: wfe ldaxr w2, [x0] cmp w2, w1 b.gt 1b /* Increment the sync var. */ 2: ldaxr w2, [x0] add w3, w2, #1 stlxr w4, w3, [x0] cbnz w4, 2b /* Loop until the sync var matches our ticket. */ add w3, w2, w1 sevl 3: wfe ldaxr w2, [x0] cmp w2, w3 b.ne 3b /* Check if the ticket is the last. */ sub w2, w1, #1 add w2, w2, w1 cmp w3, w2 b.eq 5f /* Our ticket is not the last one. Increment. */ 4: ldaxr w2, [x0] add w3, w2, #1 stlxr w4, w3, [x0] cbnz w4, 4b ret /* Our ticket is the last one. */ 5: stlr wzr, [x0] ret /* ams::kern::arch::arm64::cpu::ClearPageToZero(void *) */ .section .text._ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv, "ax", %progbits .global _ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv .type _ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv, %function _ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv: /* Efficiently clear the page using dc zva. */ dc zva, x0 add x8, x0, #0x040 dc zva, x8 add x8, x0, #0x080 dc zva, x8 add x8, x0, #0x0c0 dc zva, x8 add x8, x0, #0x100 dc zva, x8 add x8, x0, #0x140 dc zva, x8 add x8, x0, #0x180 dc zva, x8 add x8, x0, #0x1c0 dc zva, x8 add x8, x0, #0x200 dc zva, x8 add x8, x0, #0x240 dc zva, x8 add x8, x0, #0x280 dc zva, x8 add x8, x0, #0x2c0 dc zva, x8 add x8, x0, #0x300 dc zva, x8 add x8, x0, #0x340 dc zva, x8 add x8, x0, #0x380 dc zva, x8 add x8, x0, #0x3c0 dc zva, x8 add x8, x0, #0x400 dc zva, x8 add x8, x0, #0x440 dc zva, x8 add x8, x0, #0x480 dc zva, x8 add x8, x0, #0x4c0 dc zva, x8 add x8, x0, #0x500 dc zva, x8 add x8, x0, #0x540 dc zva, x8 add x8, x0, #0x580 dc zva, x8 add x8, x0, #0x5c0 dc zva, x8 add x8, x0, #0x600 dc zva, x8 add x8, x0, #0x640 dc zva, x8 add x8, x0, #0x680 dc zva, x8 add x8, x0, #0x6c0 dc zva, x8 add x8, x0, #0x700 dc zva, x8 add x8, x0, #0x740 dc zva, x8 add x8, x0, #0x780 dc zva, x8 add x8, x0, #0x7c0 dc zva, x8 add x8, x0, #0x800 dc zva, x8 add x8, x0, #0x840 dc zva, x8 add x8, x0, #0x880 dc zva, x8 add x8, x0, #0x8c0 dc zva, x8 add x8, x0, #0x900 dc zva, x8 add x8, x0, #0x940 dc zva, x8 add x8, x0, #0x980 dc zva, x8 add x8, x0, #0x9c0 dc zva, x8 add x8, x0, #0xa00 dc zva, x8 add x8, x0, #0xa40 dc zva, x8 add x8, x0, #0xa80 dc zva, x8 add x8, x0, #0xac0 dc zva, x8 add x8, x0, #0xb00 dc zva, x8 add x8, x0, #0xb40 dc zva, x8 add x8, x0, #0xb80 dc zva, x8 add x8, x0, #0xbc0 dc zva, x8 add x8, x0, #0xc00 dc zva, x8 add x8, x0, #0xc40 dc zva, x8 add x8, x0, #0xc80 dc zva, x8 add x8, x0, #0xcc0 dc zva, x8 add x8, x0, #0xd00 dc zva, x8 add x8, x0, #0xd40 dc zva, x8 add x8, x0, #0xd80 dc zva, x8 add x8, x0, #0xdc0 dc zva, x8 add x8, x0, #0xe00 dc zva, x8 add x8, x0, #0xe40 dc zva, x8 add x8, x0, #0xe80 dc zva, x8 add x8, x0, #0xec0 dc zva, x8 add x8, x0, #0xf00 dc zva, x8 add x8, x0, #0xf40 dc zva, x8 add x8, x0, #0xf80 dc zva, x8 add x8, x0, #0xfc0 dc zva, x8 ret