Luna/kernel/CMakeLists.txt

# The Moon kernel for Luna.

file(GLOB_RECURSE HEADERS src/*.h)

set(SOURCES 
    ${HEADERS}
    src/main.cpp
    src/Log.cpp
    src/cxxabi.cpp
    src/video/Framebuffer.cpp
    src/video/TextConsole.cpp
    src/memory/MemoryManager.cpp
    src/memory/Heap.cpp
    src/memory/KernelVM.cpp
    src/memory/UserVM.cpp
    src/memory/MemoryMap.cpp
    src/boot/Init.cpp
    src/arch/Serial.cpp
    src/arch/Timer.cpp
    src/arch/PCI.cpp
    src/thread/Thread.cpp
    src/thread/Scheduler.cpp
    src/sys/Syscall.cpp
    src/sys/exit.cpp
    src/sys/console_write.cpp
    src/sys/clock_gettime.cpp
    src/sys/allocate_memory.cpp
    src/sys/usleep.cpp
    src/sys/open.cpp
    src/sys/file.cpp
    src/sys/id.cpp
    src/fs/VFS.cpp
    src/fs/tmpfs/FileSystem.cpp
    src/InitRD.cpp
    src/ELF.cpp
)

if("${LUNA_ARCH}" MATCHES "x86_64")
    set(SOURCES
        ${SOURCES}
        src/arch/x86_64/IO.cpp
        src/arch/x86_64/Serial.cpp
        src/arch/x86_64/MMU.cpp
        src/arch/x86_64/CPU.cpp
        src/arch/x86_64/Timer.cpp
        src/arch/x86_64/Thread.cpp
        src/arch/x86_64/PCI.cpp
        src/arch/x86_64/init/GDT.cpp
        src/arch/x86_64/init/IDT.cpp
        src/arch/x86_64/init/PIC.cpp
    )
endif()

add_executable(moon ${SOURCES})

if("${LUNA_ARCH}" MATCHES "x86_64")
    set(ASM_SOURCES
        src/arch/x86_64/CPU.asm
        src/arch/x86_64/Entry.asm
    )
    add_library(moon-asm STATIC ${ASM_SOURCES})
    target_link_libraries(moon moon-asm)
endif()

target_link_libraries(moon luna-freestanding)

target_compile_definitions(moon PRIVATE IN_MOON)

target_compile_options(moon PRIVATE -Os)

target_compile_options(moon PRIVATE -Wall -Wextra -Werror -Wvla -Wsign-conversion)
target_compile_options(moon PRIVATE -Wdisabled-optimization -Wformat=2 -Winit-self)
target_compile_options(moon PRIVATE -Wmissing-include-dirs -Wswitch-default -Wcast-qual -Wundef) 
target_compile_options(moon PRIVATE -Wcast-align -Wwrite-strings -Wlogical-op -Wredundant-decls -Wshadow -Wconversion)
target_compile_options(moon PRIVATE -fno-rtti -ffreestanding -fno-exceptions)
target_compile_options(moon PRIVATE -fno-asynchronous-unwind-tables -fno-omit-frame-pointer)
target_compile_options(moon PRIVATE -nostdlib -mcmodel=kernel)

if("${LUNA_ARCH}" MATCHES "x86_64")
    target_compile_options(moon PRIVATE -mno-red-zone)
    target_compile_options(moon PRIVATE -mno-80387 -mno-mmx -mno-sse -mno-sse2)
    target_link_options(moon PRIVATE -mno-red-zone)
endif()

if(MOON_DEBUG_SYMBOLS)
    message(STATUS "Building Moon with debug symbols")
    target_compile_options(moon PRIVATE -ggdb)
    include(debug.cmake)
endif()

target_link_options(moon PRIVATE -lgcc -Wl,--build-id=none -z max-page-size=0x1000 -mcmodel=kernel)

set_target_properties(moon PROPERTIES CXX_STANDARD 20)

target_include_directories(moon PRIVATE ${CMAKE_CURRENT_LIST_DIR}/src)
target_include_directories(moon PRIVATE ${LUNA_BASE}/usr/include)

configure_file(src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/gen/config.h @ONLY)

target_include_directories(moon PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/gen)

target_link_options(moon PRIVATE LINKER:-T ${CMAKE_CURRENT_LIST_DIR}/moon.ld -nostdlib -nodefaultlibs)

install(FILES "${CMAKE_CURRENT_BINARY_DIR}/moon" DESTINATION ${LUNA_ROOT}/initrd/boot)
Add descriptions in CMakeLists 2022-12-04 11:47:08 +00:00			`# The Moon kernel for Luna.`

kernel: Start scanning the PCI bus for devices 2023-01-23 19:07:17 +00:00			`file(GLOB_RECURSE HEADERS src/*.h)`

Initial commit :) 2022-11-13 09:09:09 +00:00			`set(SOURCES`
kernel: Start scanning the PCI bus for devices 2023-01-23 19:07:17 +00:00			`${HEADERS}`
Initial commit :) 2022-11-13 09:09:09 +00:00			`src/main.cpp`
Add logging system :) 2022-11-30 12:29:28 +00:00			`src/Log.cpp`
Kernel: Add __cxa_atexit iomplementation 2023-01-13 17:56:05 +00:00			`src/cxxabi.cpp`
Cleanup kernel/CMakeLists.txt 2022-11-19 16:59:39 +00:00			`src/video/Framebuffer.cpp`
Add a framebuffer text renderer 2022-11-20 16:55:22 +00:00			`src/video/TextConsole.cpp`
Cleanup kernel/CMakeLists.txt 2022-11-19 16:59:39 +00:00			`src/memory/MemoryManager.cpp`
Kernel: Add a heap memory allocator This is the first time I've actually dropped liballoc in favor of writing my own implementation. Usually, malloc() and such looked so complicated that I preferred to let a nice external library do the job. But I've decided to try writing my own allocator, and now we have heap memory without any 3rd party code! 2022-11-20 14:15:26 +00:00			`src/memory/Heap.cpp`
Add a virtual memory allocator for the kernel 2022-12-05 19:36:24 +00:00			`src/memory/KernelVM.cpp`
Kernel: Make a UserVM wrapper around Bitmap and use that to allocate user VM This lets us allocate more than one page of memory from the user side. 2023-01-13 18:05:20 +00:00			`src/memory/UserVM.cpp`
Use a friendlier way of iterating over the memory map 2022-12-04 14:45:13 +00:00			`src/memory/MemoryMap.cpp`
Cleanup kernel/CMakeLists.txt 2022-11-19 16:59:39 +00:00			`src/boot/Init.cpp`
Serial printing!! 2022-11-13 09:30:10 +00:00			`src/arch/Serial.cpp`
Kernel: Introduce a timer interface 2022-11-19 19:01:01 +00:00			`src/arch/Timer.cpp`
kernel: Start scanning the PCI bus for devices 2023-01-23 19:07:17 +00:00			`src/arch/PCI.cpp`
Add a Scheduler!! 2022-12-07 14:03:34 +00:00			`src/thread/Thread.cpp`
			`src/thread/Scheduler.cpp`
Add a syscall infrastructure (our baby program can print to the console now!) 2023-01-05 21:39:56 +00:00			`src/sys/Syscall.cpp`
			`src/sys/exit.cpp`
Implement printf() 2023-01-07 00:49:26 +00:00			`src/sys/console_write.cpp`
kernel, libc: Add clock_gettime() 2023-01-06 23:21:08 +00:00			`src/sys/clock_gettime.cpp`
Add a VERY BASIC and hacky way of allocating memory from userspace Only supports one-page allocations and doesn't have libc wrappers, which means it has to be invoked using syscall(). 2023-01-11 22:01:47 +00:00			`src/sys/allocate_memory.cpp`
kernel, libc: Add an usleep() system call and use that to implement usleep() and sleep() in libc 2023-01-22 14:00:20 +00:00			`src/sys/usleep.cpp`
kernel+libc: Start interfacing with the VFS from userspace (open & close) This commit adds open and close syscalls to the kernel, and adds matching wrappers to libc. No read/write support, so file descriptors are kind of useless for now. 2023-03-11 16:45:20 +00:00			`src/sys/open.cpp`
kernel+libc: Implement read() 2023-03-11 17:02:50 +00:00			`src/sys/file.cpp`
kernel+libc: Add getpid() 2023-03-11 21:19:58 +00:00			`src/sys/id.cpp`
kernel: Start working on a VFS implementation using OOP and SharedPtr 2023-02-03 21:18:52 +00:00			`src/fs/VFS.cpp`
			`src/fs/tmpfs/FileSystem.cpp`
Add a global initrd TarStream to make the initial ramdisk accessible everywhere It's also mapped into virtual memory instead of directly going into the physical location!! 2022-12-23 10:33:23 +00:00			`src/InitRD.cpp`
Add a simple ELF loader 2022-12-23 12:09:21 +00:00			`src/ELF.cpp`
Serial printing!! 2022-11-13 09:30:10 +00:00			`)`

tools+CMake: Prefix all environment variables with LUNA_ 2023-01-21 21:44:16 +00:00			`if("${LUNA_ARCH}" MATCHES "x86_64")`
More indentation in CMakeLists.txt 2022-11-19 17:00:45 +00:00			`set(SOURCES`
			`${SOURCES}`
			`src/arch/x86_64/IO.cpp`
			`src/arch/x86_64/Serial.cpp`
			`src/arch/x86_64/MMU.cpp`
			`src/arch/x86_64/CPU.cpp`
Kernel: Introduce a timer interface 2022-11-19 19:01:01 +00:00			`src/arch/x86_64/Timer.cpp`
Add a Scheduler!! 2022-12-07 14:03:34 +00:00			`src/arch/x86_64/Thread.cpp`
kernel: Start scanning the PCI bus for devices 2023-01-23 19:07:17 +00:00			`src/arch/x86_64/PCI.cpp`
Split off arch/x86_64/CPU.cpp into various files 2022-12-17 14:45:06 +00:00			`src/arch/x86_64/init/GDT.cpp`
			`src/arch/x86_64/init/IDT.cpp`
			`src/arch/x86_64/init/PIC.cpp`
More indentation in CMakeLists.txt 2022-11-19 17:00:45 +00:00			`)`
Make the build system more platform-agnostic 2022-11-19 16:46:53 +00:00			`endif()`
Initial commit :) 2022-11-13 09:09:09 +00:00
Add a CPU interface 2022-11-15 18:10:32 +00:00			`add_executable(moon ${SOURCES})`
Initial commit :) 2022-11-13 09:09:09 +00:00
tools+CMake: Prefix all environment variables with LUNA_ 2023-01-21 21:44:16 +00:00			`if("${LUNA_ARCH}" MATCHES "x86_64")`
Cleanup kernel/CMakeLists.txt 2022-11-19 16:59:39 +00:00			`set(ASM_SOURCES`
			`src/arch/x86_64/CPU.asm`
Kernel: Start the call stack with a null RBP on x86_64 2022-11-19 17:38:32 +00:00			`src/arch/x86_64/Entry.asm`
Cleanup kernel/CMakeLists.txt 2022-11-19 16:59:39 +00:00			`)`
			`add_library(moon-asm STATIC ${ASM_SOURCES})`
			`target_link_libraries(moon moon-asm)`
Make the build system more platform-agnostic 2022-11-19 16:46:53 +00:00			`endif()`

			`target_link_libraries(moon luna-freestanding)`
Initial commit :) 2022-11-13 09:09:09 +00:00
Introduce a check() method (like assert() but always on) 2022-11-15 18:36:50 +00:00			`target_compile_definitions(moon PRIVATE IN_MOON)`

Add a CPU interface 2022-11-15 18:10:32 +00:00			`target_compile_options(moon PRIVATE -Os)`
Initial commit :) 2022-11-13 09:09:09 +00:00
Kernel: Enable -Wsign-conversion For real this time, turns out me, being dumb, added it to Luna instead of the kernel. 2022-12-08 14:09:32 +00:00			`target_compile_options(moon PRIVATE -Wall -Wextra -Werror -Wvla -Wsign-conversion)`
Add a CPU interface 2022-11-15 18:10:32 +00:00			`target_compile_options(moon PRIVATE -Wdisabled-optimization -Wformat=2 -Winit-self)`
			`target_compile_options(moon PRIVATE -Wmissing-include-dirs -Wswitch-default -Wcast-qual -Wundef)`
			`target_compile_options(moon PRIVATE -Wcast-align -Wwrite-strings -Wlogical-op -Wredundant-decls -Wshadow -Wconversion)`
			`target_compile_options(moon PRIVATE -fno-rtti -ffreestanding -fno-exceptions)`
			`target_compile_options(moon PRIVATE -fno-asynchronous-unwind-tables -fno-omit-frame-pointer)`
			`target_compile_options(moon PRIVATE -nostdlib -mcmodel=kernel)`

tools+CMake: Prefix all environment variables with LUNA_ 2023-01-21 21:44:16 +00:00			`if("${LUNA_ARCH}" MATCHES "x86_64")`
Cleanup kernel/CMakeLists.txt 2022-11-19 16:59:39 +00:00			`target_compile_options(moon PRIVATE -mno-red-zone)`
			`target_compile_options(moon PRIVATE -mno-80387 -mno-mmx -mno-sse -mno-sse2)`
			`target_link_options(moon PRIVATE -mno-red-zone)`
Make the build system more platform-agnostic 2022-11-19 16:46:53 +00:00			`endif()`
Add a CPU interface 2022-11-15 18:10:32 +00:00
Make build-debug.sh work 2022-12-04 09:27:25 +00:00			`if(MOON_DEBUG_SYMBOLS)`
			`message(STATUS "Building Moon with debug symbols")`
			`target_compile_options(moon PRIVATE -ggdb)`
Bitmap: Introduce a new method 'find' and use it in MM and KernelVM This method looks for the first bit with a value, optionally from a starting index, and returns its index. This should be (haven't benchmarked) way faster than the manual way, AKA what MM and KernelVM were doing. This is due to this method using bit and byte manipulation tricks instead of just calling get() until getting the desired result :) 2023-01-09 16:59:52 +00:00			`include(debug.cmake)`
Make build-debug.sh work 2022-12-04 09:27:25 +00:00			`endif()`

Add a CPU interface 2022-11-15 18:10:32 +00:00			`target_link_options(moon PRIVATE -lgcc -Wl,--build-id=none -z max-page-size=0x1000 -mcmodel=kernel)`

Add Framebuffer stuff 2022-11-13 10:25:15 +00:00			`set_target_properties(moon PROPERTIES CXX_STANDARD 20)`

Serial printing!! 2022-11-13 09:30:10 +00:00			`target_include_directories(moon PRIVATE ${CMAKE_CURRENT_LIST_DIR}/src)`
kernel, libc: Add clock_gettime() 2023-01-06 23:21:08 +00:00			`target_include_directories(moon PRIVATE ${LUNA_BASE}/usr/include)`
Initial commit :) 2022-11-13 09:09:09 +00:00
Add config.h for version information 2022-12-03 16:25:25 +00:00			`configure_file(src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/gen/config.h @ONLY)`

			`target_include_directories(moon PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/gen)`

Initial commit :) 2022-11-13 09:09:09 +00:00			`target_link_options(moon PRIVATE LINKER:-T ${CMAKE_CURRENT_LIST_DIR}/moon.ld -nostdlib -nodefaultlibs)`

Add a syscall infrastructure (our baby program can print to the console now!) 2023-01-05 21:39:56 +00:00			`install(FILES "${CMAKE_CURRENT_BINARY_DIR}/moon" DESTINATION ${LUNA_ROOT}/initrd/boot)`