tools: Add useful script to develop ports

.gitignore

@@ -19,3 +19,4 @@ base/etc/skel/LICENSE
 kernel/config.cmake
 ports/out/
 ports/temp/
+ports/dev/

kernel/src/arch/x86_64/CPU.cpp

@@ -95,8 +95,6 @@ void handle_cpu_exception(int signo, const char* err, Registers* regs)
     kerrorln("R12: %.16lx R13: %.16lx R14: %.16lx R15:   %.16lx", regs->r12, regs->r13, regs->r14, regs->r15);
     kerrorln("RIP: %.16lx CS:  %.16lx SS:  %.16lx FLAGS: %.16lx", regs->rip, regs->cs, regs->ss, regs->rflags);
 
-    CPU::print_stack_trace_at(regs);
-
     if (!is_in_kernel(regs))
     {
         auto* current = Scheduler::current();

kernel/src/thread/Thread.cpp

@@ -187,7 +187,10 @@ void Thread::process_pending_signals(Registers* current_regs)
                 switch (action)
                 {
                 case DefaultSignalAction::Ignore: return;
-                case DefaultSignalAction::Terminate: exit_and_signal_parent(signo | _SIGBIT);
+                case DefaultSignalAction::Terminate:
+                    kwarnln("Terminating thread %d with signal %d", id, signo);
+                    CPU::print_stack_trace_at(current_regs);
+                    exit_and_signal_parent(signo | _SIGBIT);
                 case DefaultSignalAction::Stop: stop();
                 default: return;
                 }

libc/src/arch/x86_64/crt0.S

@@ -3,6 +3,8 @@
 .global _start
 .extern exit
 .extern libc_init
+.extern _init
+.extern _fini
 _start:
 	# Set up end of the stack frame linked list.
 	movq $0, %rbp
@@ -26,6 +28,11 @@ _start:
 	# Run main
 	call main
 
+	# Store the exit code before calling _fini.
+	push %rax
+
+	call _fini
+
 	# Terminate the process with the exit code.
-	movl %eax, %edi
+	pop %rdi
 	call exit

libc/src/init.cpp

@@ -7,6 +7,14 @@ extern char** environ;
 extern "C" FILE* _fdopen_impl(int, const char*, int);
 extern "C" void _init_stdio();
 
+typedef void initfunc_t(void);
+extern initfunc_t *__init_array_start[], *__init_array_end[];
+
+static void handle_init_array(void)
+{
+    for (initfunc_t** p = __init_array_start; p != __init_array_end; p++) (*p)();
+}
+
 extern "C"
 {
     void libc_init(int argc, char** argv, int envc, char** envp)
@@ -19,5 +27,7 @@ extern "C"
         stdin = _fdopen_impl(STDIN_FILENO, "r", _IOLBF);
         stdout = _fdopen_impl(STDOUT_FILENO, "w", _IOLBF);
         stderr = _fdopen_impl(STDERR_FILENO, "w", _IONBF);
+
+        handle_init_array();
     }
 }

ports/binutils/PACKAGE

@@ -19,5 +19,5 @@ do_patch()
 
 do_configure()
 {
-    $srcdir/configure --host=$LUNA_ARCH-luna --with-build-sysroot=$LUNA_BASE --disable-nls --disable-werror --enable-warn-rwx-segments=no --prefix=/usr --enable-gold=no --enable-ld=yes --enable-gprofng=no
+    $srcdir/configure --host=$LUNA_ARCH-luna --with-build-sysroot=$LUNA_BASE --disable-nls --disable-werror --enable-warn-rwx-segments=no --prefix=/usr --enable-gold=no --enable-ld=yes --enable-gprofng=no --enable-initfini-array
 }

ports/gcc/PACKAGE

@@ -17,7 +17,7 @@ do_patch()
 
 do_configure()
 {
-    $srcdir/configure --prefix=/usr --target=$LUNA_ARCH-luna --host=$LUNA_ARCH-luna --disable-nls --with-build-sysroot=$LUNA_BASE --enable-languages=c,c++ --enable-checking
+    $srcdir/configure --prefix=/usr --target=$LUNA_ARCH-luna --host=$LUNA_ARCH-luna --disable-nls --with-build-sysroot=$LUNA_BASE --enable-languages=c,c++ --enable-checking --enable-initfini-array
 }
 
 do_build()

tests/CMakeLists.txt

@@ -23,6 +23,7 @@ luna_test(libluna/TestSharedPtr.cpp TestSharedPtr)
 luna_test(libc/TestScanf.cpp TestScanf)
 luna_test(libc/TestString.cpp TestString)
 luna_test(libc/TestEnv.cpp TestEnv)
+luna_test(libc/TestGlobalCtors.cpp TestGlobalCtors)
 
 luna_app(run-tests.cpp run-tests)
 endif()

tests/libc/TestGlobalCtors.cpp

@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <string.h>
+#include <test.h>
+#include <time.h>
+
+struct TestStruct
+{
+    TestStruct(const char* name) : m_name(name)
+    {
+        // Just to make sure this constructor doesn't get optimized out
+        time_t t = time(NULL);
+        ctime(&t);
+    }
+
+    const char* name()
+    {
+        return m_name;
+    }
+
+  private:
+    const char* m_name;
+};
+
+TestStruct g_struct("Example Struct");
+
+TestResult test_successful_global_constructor()
+{
+    validate(g_struct.name());
+
+    validate(!strcmp(g_struct.name(), "Example Struct"));
+
+    test_success;
+}
+
+Result<void> test_main()
+{
+    test_prelude;
+
+    run_test(test_successful_global_constructor);
+
+    return {};
+}

tools/make-package.sh

@@ -13,7 +13,7 @@ then
     exit 1
 fi
 
-export WORKDIR=$LUNA_ROOT/ports/temp/
+export WORKDIR=${WORKDIR:-$LUNA_ROOT/ports/temp}
 
 show_error()
 {
@@ -28,11 +28,13 @@ source ports/$PORT_NAME/PACKAGE
 [ -z ${format+x} ] && show_error "error: The port's PACKAGE file does not have a 'format' key."
 [ -z ${url+x} ] && show_error "error: The port's PACKAGE file does not have a 'url' key."
 
-if ! [ -z ${dependencies+x} ]; then
-    echo "Installing dependencies of $name: (${dependencies[@]})"
-    for dep in ${dependencies[@]}; do
-        tools/install-package.sh $dep
-    done
+if [ -x ${skip_dependencies+x} ]; then
+    if ! [ -z ${dependencies+x} ]; then
+        echo "Installing dependencies of $name: (${dependencies[@]})"
+        for dep in ${dependencies[@]}; do
+            tools/install-package.sh $dep
+        done
+    fi
 fi
 
 export portdir=$LUNA_ROOT/ports/$name/
@@ -43,37 +45,39 @@ export installdir=$WORKDIR/pkgroot-$name
 mkdir -p $WORKDIR
 cd $WORKDIR
 
-# Download package sources
-case $format in
-    tar)
-        [ -z ${output+x} ] && show_error "error: The 'tar' download format needs an 'output' key."
-        [ -z ${sha256sum+x} ] && show_error "error: The 'tar' download format needs a 'sha256sum' key."
-        if ! [ -f $output ]; then 
-            echo "Downloading tarball for $name..."
-            wget $url --quiet
-        else
-            echo "Using cached tarball for $name."
-        fi
-        echo "$sha256sum $output" | sha256sum -c
-        tar xf $output
-        ;;
-    git)
-        if ! [ -d $srcdir ]; then
-            echo "Cloning repository for $name..."
-            git clone $url $srcdir
-        else
-            echo "Using local repository for $name."
-        fi
-        if ! [ -z ${tag+x} ]; then
-            cd $srcdir
-            git checkout $tag
-            cd -
-        fi
-        ;;
-    *)
-        show_error "error: Unrecognized 'format' key in PACKAGE file: '$format'"
-        ;;
-esac
+if [ -z ${skip_download_sources+x} ]; then
+    # Download package sources
+    case $format in
+        tar)
+            [ -z ${output+x} ] && show_error "error: The 'tar' download format needs an 'output' key."
+            [ -z ${sha256sum+x} ] && show_error "error: The 'tar' download format needs a 'sha256sum' key."
+            if ! [ -f $output ]; then 
+                echo "Downloading tarball for $name..."
+                wget $url --quiet
+            else
+                echo "Using cached tarball for $name."
+            fi
+            echo "$sha256sum $output" | sha256sum -c
+            tar xf $output
+            ;;
+        git)
+            if ! [ -d $srcdir ]; then
+                echo "Cloning repository for $name..."
+                git clone $url $srcdir
+            else
+                echo "Using local repository for $name."
+            fi
+            if ! [ -z ${tag+x} ]; then
+                cd $srcdir
+                git checkout $tag
+                cd -
+            fi
+            ;;
+        *)
+            show_error "error: Unrecognized 'format' key in PACKAGE file: '$format'"
+            ;;
+    esac
+fi
 
 if ! [ "$set_cc_variables" = "no" ]; then
 export CC=x86_64-luna-gcc
@@ -89,54 +93,65 @@ fi
 mkdir -p $builddir
 cd $builddir
 
-declare -F do_patch &>/dev/null && do_patch
-
-echo "Configuring $name..."
-
-if [ "$use_default_configure" = "true" ]; then
-    $srcdir/configure --host=$LUNA_ARCH-luna --prefix=/usr
-elif [ "$use_cmake_configure" = "true" ]; then
-    cmake -S $srcdir -B . -DCMAKE_C_COMPILER=$LUNA_ARCH-luna-gcc -DCMAKE_CXX_COMPILER=$LUNA_ARCH-luna-g++ -G "Unix Makefiles"
-else
-    declare -F do_configure &>/dev/null || show_error "error: If not using a default configure line, the PACKAGE file must provide a 'do_configure' function."
-    do_configure
+if [ -z ${skip_patch+x} ]; then
+    declare -F do_patch &>/dev/null && do_patch
 fi
 
-echo "Building $name..."
+if [ -z ${skip_configure+x} ]; then
+    echo "Configuring $name..."
 
-export MAKEJOBS=$(nproc)
-
-if [ "$default_build_make" = "true" ]; then
-    make -j$MAKEJOBS
-elif [ "$default_build_cmake" = "true" ]; then
-    cmake --build .
-else
-    declare -F do_build &>/dev/null || show_error "error: If not using a default build preset, the PACKAGE file must provide a 'do_build' function."
-    do_build
+    if [ "$use_default_configure" = "true" ]; then
+        $srcdir/configure --host=$LUNA_ARCH-luna --prefix=/usr
+    elif [ "$use_cmake_configure" = "true" ]; then
+        cmake -S $srcdir -B . -DCMAKE_C_COMPILER=$LUNA_ARCH-luna-gcc -DCMAKE_CXX_COMPILER=$LUNA_ARCH-luna-g++ -G "Unix Makefiles"
+    else
+        declare -F do_configure &>/dev/null || show_error "error: If not using a default configure line, the PACKAGE file must provide a 'do_configure' function."
+        do_configure
+    fi
 fi
 
-echo "Installing $name..."
+if [ -z ${skip_build+x} ]; then
+    echo "Building $name..."
 
-mkdir -p $installdir
-export DESTDIR=$installdir
+    export MAKEJOBS=$(nproc)
 
-if [ "$default_install_make" = "true" ]; then
-    make install
-elif [ "$default_install_cmake" = "true" ]; then
-    cmake --install $builddir --prefix /usr
-else
-    declare -F do_install &>/dev/null || show_error "error: If not using a default install preset, the PACKAGE file must provide a 'do_install' function."
-    do_install
+    if [ "$default_build_make" = "true" ]; then
+        make -j$MAKEJOBS
+    elif [ "$default_build_cmake" = "true" ]; then
+        cmake --build .
+    else
+        declare -F do_build &>/dev/null || show_error "error: If not using a default build preset, the PACKAGE file must provide a 'do_build' function."
+        do_build
+    fi
 fi
 
-rm -f $installdir/usr/lib/*.la # remove all libtool .la files, as they use host stuff which we don't want at all
-set +e
-$LUNA_ARCH-luna-strip $installdir/usr/bin/* # strip all binaries
-set -e
+if [ -z ${skip_install+x} ]; then
+    echo "Installing $name..."
 
-cd $installdir
+    rm -rf $installdir # clean it if it already existed
+    mkdir -p $installdir
+    export DESTDIR=$installdir
 
-tar czf $LUNA_ROOT/ports/out/$name-$version.tar.gz *
+    if [ "$default_install_make" = "true" ]; then
+        make install
+    elif [ "$default_install_cmake" = "true" ]; then
+        cmake --install $builddir --prefix /usr
+    else
+        declare -F do_install &>/dev/null || show_error "error: If not using a default install preset, the PACKAGE file must provide a 'do_install' function."
+        do_install
+    fi
 
-cd $LUNA_ROOT
-rm -rf $WORKDIR
+    rm -f $installdir/usr/lib/*.la # remove all libtool .la files, as they use host stuff which we don't want at all
+    set +e
+    $LUNA_ARCH-luna-strip $installdir/usr/bin/* # strip all binaries
+    set -e
+
+    cd $installdir
+
+    tar czf $LUNA_ROOT/ports/out/$name-$version.tar.gz *
+fi
+
+if [ -z ${preserve_workdir+x} ]; then
+    cd $LUNA_ROOT
+    rm -rf $WORKDIR
+fi

tools/package-helper.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+set -e
+
+source $(dirname $0)/env.sh
+
+cd $LUNA_ROOT
+
+SUBCOMMAND=$1
+PORT_NAME=$2
+
+if [ "$SUBCOMMAND" = "help" ]; then
+    echo "TODO: add help"
+    exit 1
+fi
+
+if ! [ -f ports/$PORT_NAME/PACKAGE ]
+then
+    echo "Package $PORT_NAME does not exist. Make sure there is a valid PACKAGE file in the appropriate directory!"
+    exit 1
+fi
+
+source ports/$PORT_NAME/PACKAGE
+
+export preserve_workdir=1
+export WORKDIR=$LUNA_ROOT/ports/dev
+
+case $SUBCOMMAND in
+    download)
+        export skip_configure=1
+        export skip_build=1
+        export skip_install=1
+        export skip_dependencies=1
+        export skip_patch=1
+
+        tools/make-package.sh $PORT_NAME
+
+        if [ "$format" = "tar" ]; then
+            cd ${srcdir:-$WORKDIR/$name-$version}
+            git init
+            git add .
+            git commit -m "Temporary development git repository for diffs."
+            cd $LUNA_ROOT
+        fi
+
+        echo "Created dev source tree in ${srcdir:-$WORKDIR/$name-$version}."
+    ;;
+    setup-dependencies)
+        export skip_download_sources=1
+        export skip_build=1
+        export skip_install=1
+        export skip_configure=1
+        export skip_patch=1
+
+        tools/make-package.sh $PORT_NAME
+    ;;
+    patch)
+        export skip_download_sources=1
+        export skip_build=1
+        export skip_install=1
+        export skip_configure=1
+        export skip_dependencies=1
+
+        tools/make-package.sh $PORT_NAME
+    ;;
+    configure)
+        export skip_download_sources=1
+        export skip_build=1
+        export skip_install=1
+        export skip_dependencies=1
+        export skip_patch=1
+
+        tools/make-package.sh $PORT_NAME
+    ;;
+    compile)
+        export skip_download_sources=1
+        export skip_configure=1
+        export skip_dependencies=1
+        export skip_patch=1
+
+        tools/make-package.sh $PORT_NAME
+
+        echo "Packaged dev build as $LUNA_ROOT/ports/out/$name-$version.tar.gz. Install it using tools/install-package.sh."
+    ;;
+    generate-diff)
+        cd ${srcdir:-$WORKDIR/$name-$version}
+        git diff > $LUNA_ROOT/ports/$name/$name.patch
+        echo "Created $LUNA_ROOT/ports/$name/$name.patch. Remember to add patching code to the PACKAGE file!"
+    ;;
+    cleanup)
+        rm -rfv $WORKDIR/*$name*
+    ;;
+    *)
+        echo "No such subcommand. Run 'tools/package-helper.sh help $name' for help."
+    ;;
+esac

tools/setup-binutils.sh

@@ -39,7 +39,7 @@ unset CXX
 unset LD
 unset AR
 
-../binutils-$LUNA_BINUTILS_VERSION_REQUIRED/configure --prefix="$BUILD_PREFIX" --target=$BUILD_TARGET --disable-nls --with-sysroot=$BUILD_SYSROOT --disable-werror --enable-warn-rwx-segments=no
+../binutils-$LUNA_BINUTILS_VERSION_REQUIRED/configure --prefix="$BUILD_PREFIX" --target=$BUILD_TARGET --disable-nls --with-sysroot=$BUILD_SYSROOT --disable-werror --enable-warn-rwx-segments=no --enable-initfini-array
 
 echo Building Binutils...
 

tools/setup-gcc.sh

@@ -51,7 +51,7 @@ unset CXX
 unset LD
 unset AR
 
-../gcc-$LUNA_GCC_VERSION_REQUIRED/configure --prefix="$BUILD_PREFIX" --target=$BUILD_TARGET --disable-nls --with-sysroot=$BUILD_SYSROOT --enable-languages=c,c++
+../gcc-$LUNA_GCC_VERSION_REQUIRED/configure --prefix="$BUILD_PREFIX" --target=$BUILD_TARGET --disable-nls --with-sysroot=$BUILD_SYSROOT --enable-languages=c,c++ --enable-initfini-array
 
 echo Building GCC...