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kern: implement KThreadContext

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This commit is contained in:
Michael Scire 2020-01-30 22:46:18 -08:00
parent d262ff92cc
commit 08cb370a45
8 changed files with 428 additions and 1 deletions
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31
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_exception_context.hpp Normal file
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/*
* Copyright (c) 2018-2020 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/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
namespace ams::kern::arm64 {
struct KExceptionContext {
u64 x[(30 - 0) + 1];
u64 sp;
u64 pc;
u64 psr;
u64 tpidr;
u64 reserved;
};
static_assert(sizeof(KExceptionContext) == 0x120);
}

68
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_thread_context.hpp Normal file
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/*
* Copyright (c) 2018-2020 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/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_k_typed_address.hpp>
namespace ams::kern {
class KThread;
}
namespace ams::kern::arm64 {
class KThreadContext {
public:
static constexpr size_t NumCalleeSavedRegisters = (29 - 19) + 1;
static constexpr size_t NumFpuRegisters = 32;
private:
union {
u64 registers[NumCalleeSavedRegisters];
struct {
u64 x19;
u64 x20;
u64 x21;
u64 x22;
u64 x23;
u64 x24;
u64 x25;
u64 x26;
u64 x27;
u64 x28;
u64 x29;
};
} callee_saved;
u64 lr;
u64 sp;
u64 cpacr;
u64 fpcr;
u64 fpsr;
alignas(0x10) u128 fpu_registers[NumFpuRegisters];
bool locked;
private:
static void RestoreFpuRegisters64(const KThreadContext &);
static void RestoreFpuRegisters32(const KThreadContext &);
public:
constexpr explicit KThreadContext() : callee_saved(), lr(), sp(), cpacr(), fpcr(), fpsr(), fpu_registers(), locked() { /* ... */ }
Result Initialize(KVirtualAddress u_pc, KVirtualAddress k_sp, KVirtualAddress u_sp, uintptr_t arg, bool is_user, bool is_64_bit, bool is_main);
Result Finalize();
/* TODO: More methods (especially FPU management) */
};
}