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Kernel: Make the kernel compile & link for x86_64

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It's now possible to build the whole kernel with an x86_64 toolchain.
There's no bootstrap code so it doesn't work yet (obviously.)
This commit is contained in:
Andreas Kling 2021-03-04 17:50:05 +01:00
parent aae91dda66
commit adb2e6be5f
15 changed files with 316 additions and 48 deletions
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14
Kernel/CMakeLists.txt
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@ -1,5 +1,11 @@
add_compile_options(-Os)
if ("${SERENITY_ARCH}" STREQUAL "i686")
set(KERNEL_ARCH i386)
elseif("${SERENITY_ARCH}" STREQUAL "x86_64")
set(KERNEL_ARCH x86_64)
endif()
set(KERNEL_HEAP_SOURCES
Heap/SlabAllocator.cpp
Heap/kmalloc.cpp
@ -285,6 +291,10 @@ if (NOT ${CMAKE_HOST_SYSTEM_NAME} MATCHES SerenityOS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdlib -nostdinc -nostdinc++")
endif()
if ("${SERENITY_ARCH}" STREQUAL "x86_64")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcmodel=large -mno-red-zone")
endif()
# Kernel Undefined Behavior Sanitizer (KUBSAN)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
@ -307,9 +317,9 @@ add_link_options(LINKER:-T ${CMAKE_CURRENT_BINARY_DIR}/linker.ld -nostdlib)
# kernel won't re-link when boot.S changes without this.
set_source_files_properties(init.cpp
PROPERTIES
OBJECT_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Arch/i386/Boot/boot.S
OBJECT_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Arch/${KERNEL_ARCH}/Boot/boot.S
)
add_library(boot OBJECT Arch/i386/Boot/boot.S)
add_library(boot OBJECT Arch/${KERNEL_ARCH}/Boot/boot.S)
add_library(kernel_heap STATIC ${KERNEL_HEAP_SOURCES})
file(GENERATE OUTPUT linker.ld INPUT linker.ld)