Lab6 submission

.gitignore

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+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+kernel8.*
+*.img
+build/
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf
+
+# Local files
+.gdb_history
+.vscode/
+.cache/
+.mypy_cache/
+
+# CMake output
+compile_flags.txt
+compile_commands.json
+CMakeFiles/
+cmake_install.cmake
+CMakeCache.txt
+Makefile

.gitmodules

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+[submodule "musl"]
+	path = musl
+	url = git://git.musl-libc.org/musl

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+
+project(rpi-os VERSION 0.1.0 LANGUAGES C ASM)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS True)
+
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
+    set(aarch64_prefix "")
+    set(aarch64_gdb "gdb")
+else()
+    set(aarch64_prefix "aarch64-linux-gnu-")
+    set(aarch64_gdb "gdb-multiarch")
+endif()
+
+set(aarch64_gcc "${aarch64_prefix}gcc")
+set(aarch64_ld "${aarch64_prefix}ld")
+set(aarch64_objdump "${aarch64_prefix}objdump")
+set(aarch64_objcopy "${aarch64_prefix}objcopy")
+
+set(aarch64_qemu "qemu-system-aarch64")
+
+add_subdirectory(src)
+add_subdirectory(boot)
+
+get_property(kernel_elf GLOBAL PROPERTY kernel_elf_path)
+get_property(kernel_image GLOBAL PROPERTY kernel_image_path)
+get_property(sd_image GLOBAL PROPERTY sd_image_path)
+
+set(qemu_flags
+    -machine virt,gic-version=3
+    -cpu cortex-a72
+    -smp 4
+    -m 4096
+    -nographic
+    -monitor none
+    -serial "mon:stdio"
+    -global virtio-mmio.force-legacy=false
+    -drive file=${sd_image},if=none,format=raw,id=d0
+    -device virtio-blk-device,drive=d0,bus=virtio-mmio-bus.0
+    -kernel "${kernel_elf}")
+
+add_custom_target(qemu
+    COMMAND ${aarch64_qemu} ${qemu_flags} -gdb tcp::1234
+    DEPENDS image)
+add_custom_target(qemu-debug
+    COMMAND ${aarch64_qemu} ${qemu_flags} -gdb tcp::1234 -S
+    DEPENDS image)
+add_custom_target(debug
+    COMMAND ${aarch64_gdb} --nx --quiet
+            -ex "set architecture aarch64"
+            -ex "file ${kernel_elf}"
+            -ex "target remote localhost:1234"
+    DEPENDS kernel)
+add_custom_target(pwn
+    COMMAND pwndbg-dev --nx --quiet
+            -ex "set architecture aarch64"
+            -ex "file ${kernel_elf}"
+            -ex "target remote localhost:1234"
+    DEPENDS kernel)
+
+
+# if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
+# 	add_custom_target(init_libc
+# 	COMMAND git submodule update --init && cd ../libc &&
+# 			./configure)
+# else()
+# 	add_custom_target(init_libc
+# 		COMMAND git submodule update --init && cd ../libc &&
+# 				export CROSS_COMPILE=${aarch64_prefix} &&
+# 				./configure --target=aarch64)
+# endif()
+
+# set(LIBC_SPEC ${CMAKE_CURRENT_SOURCE_DIR}/libc/lib/musl-gcc.specs)
+# set(LIBC_SPEC_OUT musl-gcc.specs)
+# add_custom_target(libc
+# 	COMMAND make -C ../libc -j12 &&
+# 	sed -e \"s/\\/usr\\/local\\/musl/..\\/..\\/..\\/libc/g\" ${LIBC_SPEC} > ${LIBC_SPEC_OUT})