lucore now has its own assertion system

ripped off of how ive done it in like 10 different projects by now™️

native/lucore/CMakeLists.txt

@@ -5,9 +5,11 @@ project(lucore
     LANGUAGES CXX
 )
 
-add_library(lucore INTERFACE)
+add_library(lucore
+	src/Assert.cpp
+)
 
-target_compile_features(lucore INTERFACE cxx_std_20)
-target_include_directories(lucore INTERFACE ${PROJECT_SOURCE_DIR}/include)
+target_compile_features(lucore PUBLIC cxx_std_20)
+target_include_directories(lucore PUBLIC ${PROJECT_SOURCE_DIR}/include)
 
 add_library(lucore::lucore ALIAS lucore)

native/lucore/include/lucore/Assert.hpp

@@ -1,16 +1,35 @@
 //! Lucore Assert Wrappers
 
-// this just plumbs everything to libc by default
-// your project can choose to configure its own assertion handler by
-// defining LUCORE_ASSERT()
-// TODO: LUCORE_VERIFY/plumbing this into our own assertion code?
-#ifndef LUCORE_ASSERT
-#include <cassert>
+#pragma once
 
-#ifdef NDEBUG
-	#define LUCORE_ASSERT(...) assert(__VA_ARGS__)
+#include <cstdio>
+
+namespace lucore {
+
+	// TODO: wrapper which uses source_location (we don't need no macros anymore!) 
+	[[noreturn]] void ExitMsg(const char* fileName, int fileLine, const char* message);
+
+}
+
+#ifndef NDEBUG
+	#define LUCORE_ASSERT(expr, format, ...)                                                    \
+		if(!(expr)) [[unlikely]] {                                                              \
+			char buffer[256];                                                                   \
+			std::snprintf(&buffer[0], sizeof(buffer),                                           \
+						  "[Lucore] Assertion \"%s\" failed with message: " format "\n", #expr, \
+						  ##__VA_ARGS__);                                                       \
+			::lucore::ExitMsg(__FILE__, __LINE__, &buffer[0]);                                  \
+		}
 #else
-	#define LUCORE_ASSERT(...)
+	#define LUCORE_ASSERT(expr, format, ...)
 #endif
 
-#endif
+// CHECK() is always active, even in release builds
+#define LUCORE_CHECK(expr, format, ...)                                                 \
+	if(!(expr)) [[unlikely]] {                                                          \
+		char buffer[256];                                                               \
+		std::snprintf(&buffer[0], sizeof(buffer),                                       \
+					  "[Lucore] Check \"%s\" failed with message: " format "\n", #expr, \
+					  ##__VA_ARGS__);                                                   \
+		::lucore::ExitMsg(__FILE__, __LINE__, &buffer[0]);                              \
+	}

native/lucore/include/lucore/OptionalRef.hpp

@@ -6,6 +6,9 @@ namespace lucore::detail {
 
 	struct Nullref_t {};
 
+	/// Sentinel value to explicitly not populate an OptionalRef.
+	inline static Nullref_t NullRef {};
+
 	template <class T>
 	struct OptionalRef; // sfinae on non-reference types
 
@@ -35,7 +38,9 @@ namespace lucore::detail {
 		}
 
 		constexpr T& Value() const {
-			LUCORE_ASSERT(HasValue() && "Attempt to access OptionalRef without stored value!");
+			// this is a CHECK() since allowing unchecked access in release builds is probably a
+			// very very bad idea
+			LUCORE_CHECK(HasValue(), "Attempt to access OptionalRef without stored value!");
 			return *ptr;
 		}
 
@@ -60,8 +65,6 @@ namespace lucore::detail {
 		T* ptr {};
 	};
 
-	/// Sentinel value to explicitly not populate an OptionalRef.
-	inline static Nullref_t NullRef {};
 } // namespace lucore::detail
 
 namespace lucore {

native/lucore/src/Assert.cpp

@@ -0,0 +1,15 @@
+//! Implementation of lucore assertion facilities
+
+#include <cstdio>
+#include <cstdlib>
+
+namespace lucore {
+
+	[[noreturn]] void ExitMsg(const char* fileName, int fileLine, const char* message) {
+		// TODO: move this to logger functionality of lucore (gmsv_lcpu will end up containing a
+		// Sink impl..)
+		std::puts(message);
+		std::quick_exit(0xAF);
+	}
+
+} // namespace lucore

native/riscv/CMakeLists.txt

@@ -7,6 +7,7 @@ project(riscv_emu
 
 add_library(riscv
 	src/Bus.cpp
+	src/MemoryDevice.cpp
 )
 
 target_compile_features(riscv PUBLIC cxx_std_20)

native/riscv/src/MemoryDevice.cpp

@@ -1,21 +1,17 @@
 #include <riscv/Bus.hpp>
-#include "riscv/Types.hpp"
-
 #include <span>
 
+#include "riscv/Types.hpp"
+
 namespace riscv {
 
 	namespace {
 
-
 		template <bool Rom>
 		struct BasicMemoryDevice : public Bus::Device {
-			BasicMemoryDevice(usize size)
-				: memorySize(size) {
+			BasicMemoryDevice(usize size) : memorySize(size) {
 				memory = new u8[size];
-				// TODO(feat): we should have a global panic system which is hooked in
-				// so that we don't just blindly crash everything
-				assert(memory && "Out of host memory");
+				LUCORE_CHECK(memory, "Could not allocate buffer for memory device.");
 			}
 
 			virtual ~BasicMemoryDevice() {
@@ -71,8 +67,6 @@ namespace riscv {
 			}
 
 		   private:
-
-
 			/// helper used for implementing stuff
 			template <class T>
 			constexpr usize OffsetToIndex(AddressT offset) {
@@ -90,9 +84,8 @@ namespace riscv {
 		using RamDevice = BasicMemoryDevice<false>;
 		using RomDevice = BasicMemoryDevice<true>;
 
-	}
-
+	} // namespace
 
 	// Bus::Device* NewRam()
 
-}
+} // namespace riscv