cmake_minimum_required(VERSION 3.26) project(kernel CXX C ASM) if("${BANAN_ARCH}" STREQUAL "x86_64") set(ELF_FORMAT elf64-x86-64) elseif("${BANAN_ARCH}" STREQUAL "i386") set(ELF_FORMAT elf32-i386) endif() set(KERNEL_SOURCES font/prefs.psf.o kernel/ACPI.cpp kernel/APIC.cpp kernel/BootInfo.cpp kernel/CPUID.cpp kernel/Credentials.cpp kernel/Debug.cpp kernel/Device/Device.cpp kernel/Device/FramebufferDevice.cpp kernel/Device/NullDevice.cpp kernel/Device/ZeroDevice.cpp kernel/Errors.cpp kernel/Font.cpp kernel/FS/DevFS/FileSystem.cpp kernel/FS/Ext2/FileSystem.cpp kernel/FS/Ext2/Inode.cpp kernel/FS/Inode.cpp kernel/FS/Pipe.cpp kernel/FS/ProcFS/FileSystem.cpp kernel/FS/ProcFS/Inode.cpp kernel/FS/TmpFS/FileSystem.cpp kernel/FS/TmpFS/Inode.cpp kernel/FS/VirtualFileSystem.cpp kernel/Input/KeyboardLayouts/FI.cpp kernel/Input/KeyEvent.cpp kernel/Input/PS2/Controller.cpp kernel/Input/PS2/Device.cpp kernel/Input/PS2/Keyboard.cpp kernel/Input/PS2/Keymap.cpp kernel/Input/PS2/Mouse.cpp kernel/InterruptController.cpp kernel/kernel.cpp kernel/Memory/DMARegion.cpp kernel/Memory/FileBackedRegion.cpp kernel/Memory/Heap.cpp kernel/Memory/kmalloc.cpp kernel/Memory/MemoryBackedRegion.cpp kernel/Memory/MemoryRegion.cpp kernel/Memory/PhysicalRange.cpp kernel/Memory/VirtualRange.cpp kernel/Networking/E1000.cpp kernel/OpenFileDescriptorSet.cpp kernel/Panic.cpp kernel/PCI.cpp kernel/PIC.cpp kernel/Process.cpp kernel/Scheduler.cpp kernel/Semaphore.cpp kernel/SpinLock.cpp kernel/SSP.cpp kernel/Storage/ATA/AHCI/Controller.cpp kernel/Storage/ATA/AHCI/Device.cpp kernel/Storage/ATA/ATABus.cpp kernel/Storage/ATA/ATAController.cpp kernel/Storage/ATA/ATADevice.cpp kernel/Storage/DiskCache.cpp kernel/Storage/Partition.cpp kernel/Storage/StorageDevice.cpp kernel/Syscall.cpp kernel/Syscall.S kernel/Terminal/FramebufferTerminal.cpp kernel/Terminal/Serial.cpp kernel/Terminal/TTY.cpp kernel/Terminal/VirtualTTY.cpp kernel/Thread.cpp kernel/Timer/HPET.cpp kernel/Timer/PIT.cpp kernel/Timer/RTC.cpp kernel/Timer/Timer.cpp icxxabi.cpp ) #set(ENABLE_KERNEL_UBSAN True) if(ENABLE_KERNEL_UBSAN) set(KERNEL_SOURCES ${KERNEL_SOURCES} ubsan.cpp) endif() if("${BANAN_ARCH}" STREQUAL "x86_64") set(KERNEL_SOURCES ${KERNEL_SOURCES} arch/x86_64/boot.S arch/x86_64/GDT.cpp arch/x86_64/IDT.cpp arch/x86_64/interrupts.S arch/x86_64/PageTable.cpp arch/x86_64/Signal.S arch/x86_64/Thread.S ) elseif("${BANAN_ARCH}" STREQUAL "i386") set(KERNEL_SOURCES ${KERNEL_SOURCES} arch/i386/boot.S arch/i386/GDT.cpp arch/i386/IDT.cpp arch/i386/MMU.cpp arch/i386/SpinLock.S arch/i386/Thread.S ) else() message(FATAL_ERROR "unsupported architecure ${BANAN_ARCH}") endif() file(GLOB_RECURSE LAI_SOURCES lai/*.c ) set(LAI_SOURCES ${LAI_SOURCES} kernel/lai_host.cpp ) set(BAN_SOURCES ../BAN/BAN/New.cpp ../BAN/BAN/String.cpp ../BAN/BAN/StringView.cpp ../BAN/BAN/Time.cpp ) set(LIBC_SOURCES ../libc/ctype.cpp ../libc/string.cpp ) set(LIBELF_SOURCES ../LibELF/LibELF/LoadableELF.cpp ) set(KERNEL_SOURCES ${KERNEL_SOURCES} ${LAI_SOURCES} ${BAN_SOURCES} ${LIBC_SOURCES} ${LIBELF_SOURCES} ) add_executable(kernel ${KERNEL_SOURCES}) add_dependencies(kernel headers) target_compile_definitions(kernel PUBLIC __is_kernel) target_compile_definitions(kernel PUBLIC __arch=${BANAN_ARCH}) target_compile_options(kernel PUBLIC -O2 -g) target_compile_options(kernel PUBLIC $<$:-Wno-literal-suffix -fno-rtti -fno-exceptions>) target_compile_options(kernel PUBLIC -fmacro-prefix-map=${CMAKE_CURRENT_SOURCE_DIR}=.) target_compile_options(kernel PUBLIC -fstack-protector -ffreestanding -Wall -Wextra -Werror -Wstack-usage=1024 -fno-omit-frame-pointer -mgeneral-regs-only) # This might not work with other toolchains target_compile_options(kernel PUBLIC $<$:-Wno-invalid-offsetof>) if(ENABLE_KERNEL_UBSAN) target_compile_options(kernel PUBLIC -fsanitize=undefined) endif() if("${BANAN_ARCH}" STREQUAL "x86_64") target_compile_options(kernel PUBLIC -mcmodel=kernel -mno-red-zone -mno-mmx) target_link_options(kernel PUBLIC LINKER:-z,max-page-size=4096) target_link_options(kernel PUBLIC LINKER:-T,${CMAKE_CURRENT_SOURCE_DIR}/arch/x86_64/linker.ld) elseif("${BANAN_ARCH}" STREQUAL "i386") target_link_options(kernel PUBLIC LINKER:-T,${CMAKE_CURRENT_SOURCE_DIR}/arch/i386/linker.ld) endif() target_link_options(kernel PUBLIC -ffreestanding -nostdlib) set_source_files_properties(${LAI_SOURCES} PROPERTIES COMPILE_FLAGS -Wno-stack-usage) add_custom_target(kernel-headers COMMAND ${CMAKE_COMMAND} -E copy_directory_if_different ${CMAKE_CURRENT_SOURCE_DIR}/include/ ${BANAN_INCLUDE}/ COMMAND ${CMAKE_COMMAND} -E copy_directory_if_different ${CMAKE_CURRENT_SOURCE_DIR}/lai/include/ ${BANAN_INCLUDE}/ DEPENDS sysroot ) add_custom_target(kernel-install COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/kernel ${BANAN_BOOT}/banan-os.kernel DEPENDS kernel ) execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=crtbegin.o OUTPUT_VARIABLE CRTBEGIN OUTPUT_STRIP_TRAILING_WHITESPACE) execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=crtend.o OUTPUT_VARIABLE CRTEND OUTPUT_STRIP_TRAILING_WHITESPACE) add_custom_command( TARGET kernel PRE_LINK COMMAND ${CMAKE_CXX_COMPILER} -MD -c ${CMAKE_CURRENT_SOURCE_DIR}/arch/${BANAN_ARCH}/crti.S ${COMPILE_OPTIONS} COMMAND ${CMAKE_CXX_COMPILER} -MD -c ${CMAKE_CURRENT_SOURCE_DIR}/arch/${BANAN_ARCH}/crtn.S ${COMPILE_OPTIONS} COMMAND ${CMAKE_COMMAND} -E copy ${CRTBEGIN} . COMMAND ${CMAKE_COMMAND} -E copy ${CRTEND} . ) #add_custom_command( # TARGET kernel POST_BUILD # COMMAND x86_64-banan_os-strip ${CMAKE_CURRENT_BINARY_DIR}/kernel #) add_custom_command( OUTPUT font/prefs.psf.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && objcopy -O ${ELF_FORMAT} -B i386 -I binary font/prefs.psf ${CMAKE_CURRENT_BINARY_DIR}/font/prefs.psf.o ) set(CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_CXX_COMPILER} -o ${CMAKE_CURRENT_BINARY_DIR}/crti.o ${CMAKE_CURRENT_BINARY_DIR}/crtbegin.o ${CMAKE_CURRENT_BINARY_DIR}/crtend.o ${CMAKE_CURRENT_BINARY_DIR}/crtn.o -lgcc ")