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.

2 files changed, 58 insertions, 0 deletions

diff --git a/cmake/Modules/ElfTransformations.cmake b/cmake/Modules/ElfTransformations.cmake
new file mode 100644
index 0000000..dfc8576
--- /dev/null
+++ b/cmake/Modules/ElfTransformations.cmake
@@ -0,0 +1,36 @@
+include_guard(GLOBAL)
+
+function(target_extract_debug_symbols TARGET)
+    add_custom_command(TARGET "${TARGET}"
+        POST_BUILD
+        COMMAND "${CMAKE_OBJCOPY}"
+        "--only-keep-debug"
+        "$<TARGET_FILE:${TARGET}>"
+        "$<TARGET_FILE_DIR:${TARGET}>/$<TARGET_FILE_BASE_NAME:${TARGET}>.sym"
+        BYPRODUCTS "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$<CONFIGURATION>/${TARGET}.sym"
+        COMMENT "Extracting debug symbols from $<TARGET_FILE:${TARGET}> ..."
+    )
+endfunction()
+
+function(target_strip TARGET)
+    add_custom_command(TARGET "${TARGET}"
+        POST_BUILD
+        COMMAND "${CMAKE_STRIP}"
+        "$<TARGET_FILE:${TARGET}>"
+        COMMENT "Stripping $<TARGET_FILE:${TARGET}> ..."
+    )
+endfunction()
+
+function(target_disassemble TARGET)
+    add_custom_command(TARGET "${TARGET}"
+        POST_BUILD
+        COMMAND "${CMAKE_OBJDUMP}"
+        "--disassemble"
+        "--visualize-jumps"
+        "--demangle"
+        "$<TARGET_FILE:${TARGET}>"
+        ">$<TARGET_FILE_DIR:${TARGET}>/$<TARGET_FILE_BASE_NAME:${TARGET}>.dis"
+        BYPRODUCTS "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$<CONFIGURATION>/${TARGET}.dis"
+        COMMENT "Dumping disassembly for $<TARGET_FILE:${TARGET}> ..."
+    )
+endfunction()
diff --git a/cmake/Modules/GenerateBootableIso.cmake b/cmake/Modules/GenerateBootableIso.cmake
new file mode 100644
index 0000000..3d1ee30
--- /dev/null
+++ b/cmake/Modules/GenerateBootableIso.cmake
@@ -0,0 +1,22 @@
+include_guard(GLOBAL)
+
+function(target_generate_bootable_iso TARGET)
+    find_package("grub-mkrescue")
+
+    file(GENERATE
+        OUTPUT "$<TARGET_FILE_DIR:${TARGET}>/isofs/boot/grub/grub.cfg"
+        INPUT "${PROJECT_SOURCE_DIR}/arch/${CMAKE_SYSTEM_PROCESSOR}/support/grub.cfg.in"
+    )
+
+    add_custom_command(TARGET "${TARGET}"
+        POST_BUILD
+        COMMAND "${GRUB_MKRESCUE_EXE}"
+        "-o"
+        "$<TARGET_FILE_DIR:${TARGET}>/${TARGET}.iso"
+        "$<TARGET_FILE_DIR:${TARGET}>/isofs"
+        "$<TARGET_FILE:${TARGET}>"
+        "2>/dev/null"
+        BYPRODUCTS "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$<CONFIGURATION>/${TARGET}.iso"
+        COMMENT "Creating bootable ISO image"
+    )
+endfunction()