loader: native trampoline for VRSQRTPS under --amd-cpu (#893)

loader: add AMD CPU compatibility patches

Co-authored-by: nmzik <Nmzik@mail.ru>

src/loader/guestInstructionPatcher.h

@@ -0,0 +1,44 @@
+// SPDX-FileCopyrightText: Copyright 2026 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#ifndef KYTY_LOADER_GUEST_INSTRUCTION_PATCHER_H_
+#define KYTY_LOADER_GUEST_INSTRUCTION_PATCHER_H_
+
+#include "common/common.h"
+
+#include <span>
+#include <vector>
+
+namespace Loader {
+
+struct GuestInstructionPatchResult {
+	uint64_t function_count                            = 0;
+	uint64_t instruction_count                         = 0;
+	uint64_t red_zone_function_count                   = 0;
+	uint64_t memory_instruction_count                  = 0;
+	uint64_t short_memory_instruction_count            = 0;
+	uint64_t patched_memory_instruction_count          = 0;
+	uint64_t stack_dependent_memory_instruction_count  = 0;
+	uint64_t control_flow_memory_instruction_count     = 0;
+	uint64_t unrelocatable_memory_instruction_count    = 0;
+	uint64_t indirect_red_zone_function_count          = 0;
+	uint64_t reciprocal_sqrt_instruction_count         = 0;
+	uint64_t patched_reciprocal_sqrt_instruction_count = 0;
+	uint64_t trapped_reciprocal_sqrt_instruction_count = 0;
+};
+
+void RegisterGuestInstructionPatchModule(void* module_ptr, uint64_t module_size,
+                                         void* trampoline_area_ptr, uint64_t trampoline_area_size);
+void UnregisterGuestInstructionPatchModule(void* module_ptr);
+
+// Apply enabled instruction fixes using native trampolines or safe trap fallbacks.
+GuestInstructionPatchResult PatchGuestInstructions(uint64_t segment_addr, uint64_t segment_size,
+                                                   std::span<const uintptr_t> function_starts,
+                                                   bool protect_memory, bool emulate_rsqrt);
+
+bool DecodeEhFrameFunctionStarts(uint64_t eh_frame_header_addr, uint64_t eh_frame_header_size,
+                                 std::vector<uintptr_t>* function_starts);
+
+} // namespace Loader
+
+#endif /* KYTY_LOADER_GUEST_INSTRUCTION_PATCHER_H_ */