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Atmosphere/thermosphere/src/core_ctx.c

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/*
* Copyright (c) 2019 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 <http://www.gnu.org/licenses/>.
*/
#include "core_ctx.h"
#include "memory_map.h"
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// start.s
extern uintptr_t g_initialKernelEntrypoint;
static atomic_uint g_activeCoreMask = 0;
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// Prevents it from being put in BSS
CoreCtx g_coreCtxs[4] = {
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{ .coreId = 0 },
{ .coreId = 1 },
{ .coreId = 2 },
{ .coreId = 3 },
};
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void coreCtxInit(u32 coreId, bool isBootCore, u64 argument)
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{
size_t crashStackSize = 0x1000 / 4;
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currentCoreCtx = &g_coreCtxs[coreId];
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currentCoreCtx->isBootCore = isBootCore;
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currentCoreCtx->kernelArgument = argument;
currentCoreCtx->crashStack = (u8 *)(MEMORY_MAP_VA_CRASH_STACKS_TOP - crashStackSize * coreId);
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if (isBootCore && currentCoreCtx->kernelEntrypoint == 0) {
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currentCoreCtx->kernelEntrypoint = g_initialKernelEntrypoint;
}
}
void setCurrentCoreActive(void)
{
atomic_fetch_or(&g_activeCoreMask, BIT(currentCoreCtx->coreId));
}
u32 getActiveCoreMask(void)
{
return (u32)atomic_load(&g_activeCoreMask);
}