Temporarily give 80MB to all processes (#715)

src/core/kernel/memory_management.cpp

@@ -122,7 +122,10 @@ void Kernel::mapMemoryBlock() {
 	}
 
 	if (KernelHandles::isSharedMemHandle(block)) {
-		if (block == KernelHandles::FontSharedMemHandle && addr == 0) addr = 0x18000000;
+		if (block == KernelHandles::FontSharedMemHandle && addr == 0) {
+			addr = getSharedFontVaddr();
+		}
+
 		u8* ptr = mem.mapSharedMemory(block, addr, myPerms, otherPerms); // Map shared memory block
 
 		// Pass pointer to shared memory to the appropriate service
@@ -216,3 +219,8 @@ void Kernel::unmapMemoryBlock() {
 	Helpers::warn("Stubbed svcUnmapMemoryBlock!");
 	regs[0] = Result::Success;
 }
+
+u32 Kernel::getSharedFontVaddr() {
+	// Place shared font at the very beginning of system FCRAM
+	return mem.getLinearHeapVaddr() + Memory::FCRAM_APPLICATION_SIZE;
+}

src/core/services/apt.cpp

@@ -391,7 +391,7 @@ void APTService::setScreencapPostPermission(u32 messagePointer) {
 void APTService::getSharedFont(u32 messagePointer) {
 	log("APT::GetSharedFont\n");
 
-	constexpr u32 fontVaddr = 0x18000000;
+	const u32 fontVaddr = kernel.getSharedFontVaddr();
 	mem.write32(messagePointer, IPC::responseHeader(0x44, 2, 2));
 	mem.write32(messagePointer + 4, Result::Success);
 	mem.write32(messagePointer + 8, fontVaddr);