arm: Implement native code execution backend

src/core/arm/nce/guest_context.h

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/arm/arm_interface.h"
+#include "core/arm/nce/arm_nce_asm_definitions.h"
+
+namespace Core {
+
+class ARM_NCE;
+class System;
+
+struct HostContext {
+    alignas(16) std::array<u64, 12> host_saved_regs{};
+    alignas(16) std::array<u128, 8> host_saved_vregs{};
+    u64 host_sp{};
+    void* host_tpidr_el0{};
+};
+
+struct GuestContext {
+    std::array<u64, 31> cpu_registers{};
+    u64 sp{};
+    u64 pc{};
+    u32 fpcr{};
+    u32 fpsr{};
+    std::array<u128, 32> vector_registers{};
+    u32 pstate{};
+    alignas(16) HostContext host_ctx{};
+    u64 tpidrro_el0{};
+    u64 tpidr_el0{};
+    std::atomic<u64> esr_el1{};
+    u32 nzcv{};
+    u32 svc_swi{};
+    System* system{};
+    ARM_NCE* parent{};
+};
+
+// Verify assembly offsets.
+static_assert(offsetof(GuestContext, sp) == GuestContextSp);
+static_assert(offsetof(GuestContext, host_ctx) == GuestContextHostContext);
+static_assert(offsetof(HostContext, host_sp) == HostContextSpTpidrEl0);
+static_assert(offsetof(HostContext, host_tpidr_el0) - 8 == HostContextSpTpidrEl0);
+static_assert(offsetof(HostContext, host_tpidr_el0) == HostContextTpidrEl0);
+static_assert(offsetof(HostContext, host_saved_regs) == HostContextRegs);
+static_assert(offsetof(HostContext, host_saved_vregs) == HostContextVregs);
+
+} // namespace Core