[APT] Add shared font

CMakeLists.txt

@@ -59,7 +59,7 @@ set(SERVICE_SOURCE_FILES src/core/services/service_manager.cpp src/core/services
                          src/core/services/ndm.cpp src/core/services/dsp.cpp src/core/services/cfg.cpp
                          src/core/services/ptm.cpp src/core/services/mic.cpp src/core/services/cecd.cpp
                          src/core/services/ac.cpp src/core/services/am.cpp src/core/services/boss.cpp
-                         src/core/services/frd.cpp src/core/services/nim.cpp
+                         src/core/services/frd.cpp src/core/services/nim.cpp src/core/services/shared_font.cpp
 )
 set(PICA_SOURCE_FILES src/core/PICA/gpu.cpp src/core/PICA/regs.cpp src/core/PICA/shader_unit.cpp
                       src/core/PICA/shader_interpreter.cpp
@@ -86,7 +86,7 @@ set(HEADER_FILES include/emulator.hpp include/helpers.hpp include/opengl.hpp inc
                  include/services/mic.hpp include/services/cecd.hpp include/renderer_gl/renderer_gl.hpp
                  include/renderer_gl/surfaces.hpp include/renderer_gl/surface_cache.hpp include/services/ac.hpp
                  include/services/am.hpp include/services/boss.hpp include/services/frd.hpp include/services/nim.hpp
-                 include/fs/archive_ext_save_data.hpp
+                 include/fs/archive_ext_save_data.hpp include/services/shared_font.hpp
 )
 
 set(THIRD_PARTY_SOURCE_FILES third_party/imgui/imgui.cpp

include/cpu_dynarmic.hpp

@@ -77,7 +77,13 @@ public:
     }
 
     void ExceptionRaised(u32 pc, Dynarmic::A32::Exception exception) override {
-        Helpers::panic("Fired exception oops");
+        switch (exception) {
+            case Dynarmic::A32::Exception::UnpredictableInstruction:
+                Helpers::panic("Unpredictable instruction at pc = %08X", pc);
+                break;
+
+            default: Helpers::panic("Fired exception oops");
+        }
     }
 
     void AddTicks(u64 ticks) override {

include/memory.hpp

@@ -8,6 +8,7 @@
 #include "helpers.hpp"
 #include "handles.hpp"
 #include "loader/ncsd.hpp"
+#include "services/shared_font.hpp"
 
 namespace PhysicalAddrs {
 	enum : u32 {
@@ -104,7 +105,8 @@ class Memory {
 	// This tracks our OS' memory allocations
 	std::vector<KernelMemoryTypes::MemoryInfo> memoryInfo;
 
-	std::array<SharedMemoryBlock, 2> sharedMemBlocks = {
+	std::array<SharedMemoryBlock, 3> sharedMemBlocks = {
+		SharedMemoryBlock(0, _shared_font_len, KernelHandles::FontSharedMemHandle), // Shared memory for the system font
 		SharedMemoryBlock(0, 0x1000, KernelHandles::GSPSharedMemHandle), // GSP shared memory
 		SharedMemoryBlock(0, 0x1000, KernelHandles::HIDSharedMemHandle)  // HID shared memory
  	};

include/services/shared_font.hpp

@@ -0,0 +1,5 @@
+#pragma once
+#include <cstddef>
+
+extern unsigned char _shared_font_bin[];
+extern size_t _shared_font_len;

src/core/kernel/memory_management.cpp

@@ -1,4 +1,5 @@
 #include "kernel.hpp"
+#include "services/shared_font.hpp"
 
 namespace Operation {
 	enum : u32 {
@@ -89,7 +90,7 @@ void Kernel::queryMemory() {
 // Result MapMemoryBlock(Handle memblock, u32 addr, MemoryPermission myPermissions, MemoryPermission otherPermission)	
 void Kernel::mapMemoryBlock() {
 	const Handle block = regs[0];
-	const u32 addr = regs[1];
+	u32 addr = regs[1];
 	const u32 myPerms = regs[2];
 	const u32 otherPerms = regs[3];
 	logSVC("MapMemoryBlock(block = %X, addr = %08X, myPerms = %X, otherPerms = %X\n", block, addr, myPerms, otherPerms);
@@ -99,15 +100,24 @@ void Kernel::mapMemoryBlock() {
 	}
 
 	if (KernelHandles::isSharedMemHandle(block)) {
+		if (block == KernelHandles::FontSharedMemHandle && addr == 0) addr = 0x18000000;
 		u8* ptr = mem.mapSharedMemory(block, addr, myPerms, otherPerms); // Map shared memory block
 
 		// Pass pointer to shared memory to the appropriate service
-		if (block == KernelHandles::HIDSharedMemHandle) {
+		switch (block) {
+			case KernelHandles::HIDSharedMemHandle:
 				serviceManager.setHIDSharedMem(ptr);
-		} else if (block == KernelHandles::GSPSharedMemHandle) {
+				break;
+
+			case KernelHandles::GSPSharedMemHandle:
 				serviceManager.setGSPSharedMem(ptr);
-		} else {
+				break;
-			Helpers::panic("Mapping unknown shared memory block: %X", block);
+
+			case KernelHandles::FontSharedMemHandle:
+				std::memcpy(ptr, _shared_font_bin, _shared_font_len);
+				break;
+
+			default: Helpers::panic("Mapping unknown shared memory block: %X", block);
 		}
 	} else {
 		Helpers::panic("MapMemoryBlock where the handle does not refer to GSP memory");

src/core/memory.cpp

@@ -43,11 +43,11 @@ void Memory::reset() {
 	for (auto& e : sharedMemBlocks) {
 		e.mapped = false;
 		
-		std::optional<u32> possiblePaddr = findPaddr(e.size);
+		std::optional<u32> possiblePaddr = findPaddr(e.size); // Find a physical FCRAM index to allocate for the shared memory block
 		if (!possiblePaddr.has_value()) Helpers::panic("Failed to find paddr for shared memory block");
 
 		e.paddr = possiblePaddr.value();
-		if (!reserveMemory(e.paddr, e.size)) {
+		if (!reserveMemory(e.paddr, e.size)) { // Actually reserve the memory
 			Helpers::panic("Failed to reserve memory for shared memory block");
 		}
 	}