summaryrefslogtreecommitdiffstats
path: root/src/core/arm/arm_interface.h
blob: 9f2224b789d4fa88d82db37ff1ca3f2bddb7e338 (plain) (blame)
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
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

#include <array>
#include "common/common_types.h"
#include "core/hle/kernel/vm_manager.h"

/// Generic ARM11 CPU interface
class ARM_Interface : NonCopyable {
public:
    virtual ~ARM_Interface() {}

    struct ThreadContext {
        std::array<u64, 31> cpu_registers;
        u64 sp;
        u64 pc;
        u64 cpsr;
        std::array<u128, 32> fpu_registers;
        u64 fpscr;

        // TODO(bunnei): Fix once we have proper support for tpidrro_el0, etc. in the JIT
        VAddr tls_address;
    };

    /// Runs the CPU until an event happens
    virtual void Run() = 0;

    /// Step CPU by one instruction
    virtual void Step() = 0;

    virtual void MapBackingMemory(VAddr address, size_t size, u8* memory,
                                  Kernel::VMAPermission perms) {}

    /// Clear all instruction cache
    virtual void ClearInstructionCache() = 0;

    /// Notify CPU emulation that page tables have changed
    virtual void PageTableChanged() = 0;

    /**
     * Set the Program Counter to an address
     * @param addr Address to set PC to
     */
    virtual void SetPC(u64 addr) = 0;

    /*
     * Get the current Program Counter
     * @return Returns current PC
     */
    virtual u64 GetPC() const = 0;

    /**
     * Get an ARM register
     * @param index Register index
     * @return Returns the value in the register
     */
    virtual u64 GetReg(int index) const = 0;

    /**
     * Set an ARM register
     * @param index Register index
     * @param value Value to set register to
     */
    virtual void SetReg(int index, u64 value) = 0;

    virtual u128 GetExtReg(int index) const = 0;

    virtual void SetExtReg(int index, u128 value) = 0;

    /**
     * Gets the value of a VFP register
     * @param index Register index (0-31)
     * @return Returns the value in the register
     */
    virtual u32 GetVFPReg(int index) const = 0;

    /**
     * Sets a VFP register to the given value
     * @param index Register index (0-31)
     * @param value Value to set register to
     */
    virtual void SetVFPReg(int index, u32 value) = 0;

    /**
     * Get the current CPSR register
     * @return Returns the value of the CPSR register
     */
    virtual u32 GetCPSR() const = 0;

    /**
     * Set the current CPSR register
     * @param cpsr Value to set CPSR to
     */
    virtual void SetCPSR(u32 cpsr) = 0;

    virtual VAddr GetTlsAddress() const = 0;

    virtual void SetTlsAddress(VAddr address) = 0;

    /**
     * Saves the current CPU context
     * @param ctx Thread context to save
     */
    virtual void SaveContext(ThreadContext& ctx) = 0;

    /**
     * Loads a CPU context
     * @param ctx Thread context to load
     */
    virtual void LoadContext(const ThreadContext& ctx) = 0;

    /// Prepare core for thread reschedule (if needed to correctly handle state)
    virtual void PrepareReschedule() = 0;
};