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| author | Felix Morgner <felix.morgner@ost.ch> | 2025-12-15 17:13:12 +0100 |
|---|---|---|
| committer | Felix Morgner <felix.morgner@ost.ch> | 2025-12-15 17:13:12 +0100 |
| commit | 7b9482ae637126ac9337876e60f519b493437711 (patch) | |
| tree | 6fc71a253c8b0325d303bd34c95b564ba536ed14 /cmake/Platforms | |
| parent | 116f9332a206767c45095950f09f7c7447b561cf (diff) | |
| parent | a9eeec745e29d89afd48ee43d09432eb6fc35be7 (diff) | |
| download | teachos-7b9482ae637126ac9337876e60f519b493437711.tar.xz teachos-7b9482ae637126ac9337876e60f519b493437711.zip | |
os: rework kernel architecture
Rework the code structure and architecture of the kernel by separating
platform-dependent and platform-independent code more cleanly. As of
this patchset, full feature parity has not been achieved. Nonetheless, a
sufficient subset of functionality has been ported to the new
architecture to demonstrate the feasibility of the new structure.
Diffstat (limited to 'cmake/Platforms')
| -rw-r--r-- | cmake/Platforms/x86_64.cmake | 62 |
1 files changed, 34 insertions, 28 deletions
diff --git a/cmake/Platforms/x86_64.cmake b/cmake/Platforms/x86_64.cmake index e0518b5..b17fec8 100644 --- a/cmake/Platforms/x86_64.cmake +++ b/cmake/Platforms/x86_64.cmake @@ -1,35 +1,41 @@ -execute_process(COMMAND "x86_64-pc-elf-g++" "-mno-red-zone" "-print-file-name=crtbegin.o" - OUTPUT_VARIABLE CRT_BEGIN - ERROR_QUIET -) -string(STRIP "${CRT_BEGIN}" CRT_BEGIN) -mark_as_advanced(CRT_BEGIN) - -string(REGEX REPLACE "/crtbegin.o" "" CMAKE_SYSROOT "${CRT_BEGIN}") -mark_as_advanced(CMAKE_SYSROOT) +include_guard(GLOBAL) -set(SYSTEM_NAME "Generic") +set(PLATFORM_TARGET "x86_64-pc-elf") set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY") -set(CMAKE_C_COMPILER "x86_64-pc-elf-gcc") -set(CMAKE_CXX_COMPILER "x86_64-pc-elf-g++") +set(CMAKE_SYSTEM_NAME "Generic-ELF") +set(CMAKE_SYSTEM_PROCESSOR "x86_64") + +set(CMAKE_ASM_COMPILER_TARGET "${PLATFORM_TARGET}") +set(CMAKE_CXX_COMPILER_TARGET "${PLATFORM_TARGET}") + +find_program(CMAKE_ASM_COMPILER "${CMAKE_ASM_COMPILER_TARGET}-g++" REQUIRED) +find_program(CMAKE_CXX_COMPILER "${CMAKE_CXX_COMPILER_TARGET}-g++" REQUIRED) + +set(CMAKE_CXX_FLAGS_INIT + "-mno-red-zone" + "-mcmodel=kernel" + "-fno-pie" + "-fno-rtti" + "-fno-exceptions" + "-fno-use-cxa-atexit" + "-ffunction-sections" + "-fdata-sections" +) + +list(JOIN CMAKE_CXX_FLAGS_INIT " " CMAKE_CXX_FLAGS_INIT) + +set(CMAKE_EXE_LINKER_FLAGS_INIT "-Wl,--gc-sections") -set(CMAKE_CXX_FLAGS_INIT "-m64 -mno-red-zone -mcmodel=large -fno-rtti -fno-exceptions -ffunction-sections -fdata-sections") set(CMAKE_CXX_FLAGS_DEBUG "-ggdb3") set(CMAKE_ASM_FLAGS_DEBUG "-ggdb3") -set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-ggdb3") -set(CMAKE_ASM_FLAGS_RELWITHDEBINFO "-ggdb3") -set(CMAKE_EXE_LINKER_FLAGS_INIT "-nostartfiles -Wl,--gc-sections") -set(CMAKE_CXX_LINK_EXECUTABLE - "<CMAKE_CXX_COMPILER> \ - <FLAGS> \ - <CMAKE_CXX_LINK_FLAGS> \ - <LINK_FLAGS> \ - ${CMAKE_SYSROOT}/crtbegin.o \ - <OBJECTS> \ - -o <TARGET> \ - <LINK_LIBRARIES> \ - -lgcc \ - ${CMAKE_SYSROOT}/crtend.o" -) + +set(CMAKE_ASM_FLAGS_MINSIZEREL "-Os -DNDEBUG -ggdb3") +set(CMAKE_CXX_FLAGS_MINSIZEREL "-Os -DNDEBUG -ggdb3") + +set(CMAKE_ASM_FLAGS_RELEASE "-O3 -DNDEBUG -ggdb3") +set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -ggdb3") + +set(CMAKE_ASM_FLAGS_RELWITHDEBINFO "-O2 -DNDEBUG -ggdb3") +set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -DNDEBUG -ggdb3") |