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Toolchain: Build aarch64-gdb for cross-debugging on x86
This commit is contained in:
Idan Horowitz
Andreas Kling
parent
fe2e25edad
commit
783a58dbc7
Notes:
sideshowbarker
2024-07-18 04:32:47 +09:00
Author: https://github.com/IdanHo Commit: https://github.com/SerenityOS/serenity/commit/783a58dbc77 Pull-request: https://github.com/SerenityOS/serenity/pull/9865 Reviewed-by: https://github.com/nico
3 changed files with 122 additions and 7 deletions
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@ -1,8 +1,18 @@
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#!/bin/sh
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SCRIPT_DIR="$(dirname "${0}")"
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# Set this environment variable to override the default debugger.
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#
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[ -z "$SERENITY_KERNEL_DEBUGGER" ] && SERENITY_KERNEL_DEBUGGER="gdb"
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if [ -z "$SERENITY_KERNEL_DEBUGGER" ]; then
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if [ "$SERENITY_ARCH" = "aarch64" ]; then
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# Prepend the toolchain aarch64 bin directory so we pick up GDB from there
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PATH="$SCRIPT_DIR/../Toolchain/Local/aarch64/bin:$PATH"
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SERENITY_KERNEL_DEBUGGER="aarch64-pc-serenity-gdb"
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else
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SERENITY_KERNEL_DEBUGGER="gdb"
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fi
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fi
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# The QEMU -s option (enabled by default in ./run) sets up a debugger
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# remote on localhost:1234. So point our debugger there, and inform
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@ -12,10 +22,14 @@ if [ "$SERENITY_ARCH" = "x86_64" ]; then
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gdb_arch=i386:x86-64
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prekernel_image=Prekernel64
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kernel_base=0x2000200000
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else
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elif [ "$SERENITY_ARCH" = "i686" ]; then
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gdb_arch=i386:intel
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prekernel_image=Prekernel
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prekernel_image=Prekernel32
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kernel_base=0xc0200000
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elif [ "$SERENITY_ARCH" = "aarch64" ]; then
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gdb_arch=aarch64:armv8-r
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prekernel_image=Prekernel
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kernel_base=0xc0000000 # FIXME
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fi
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# FIXME: This doesn't work when running QEMU inside the WSL2 VM
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@ -25,16 +39,17 @@ else
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gdb_host=localhost
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fi
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exec $SERENITY_KERNEL_DEBUGGER \
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-ex "file $(dirname "$0")/../Build/${SERENITY_ARCH:-i686}/Kernel/Prekernel/$prekernel_image" \
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-ex "file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}/Kernel/Prekernel/$prekernel_image" \
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-ex "set confirm off" \
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-ex "directory $(dirname "$0")/../Build/${SERENITY_ARCH:-i686}/" \
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-ex "add-symbol-file $(dirname "$0")/../Build/${SERENITY_ARCH:-i686}/Kernel/Kernel -o $kernel_base" \
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-ex "directory $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}/" \
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-ex "add-symbol-file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}/Kernel/Kernel -o $kernel_base" \
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-ex "set confirm on" \
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-ex "set arch $gdb_arch" \
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-ex "set print frame-arguments none" \
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-ex "target remote ${gdb_host}:1234" \
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-ex "source $(dirname "$0")/serenity_gdb.py" \
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-ex "source $SCRIPT_DIR/serenity_gdb.py" \
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-ex "layout asm" \
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-ex "fs next" \
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"$@"
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@ -78,6 +78,12 @@ BINUTILS_NAME="binutils-$BINUTILS_VERSION"
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BINUTILS_PKG="${BINUTILS_NAME}.tar.gz"
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BINUTILS_BASE_URL="http://ftp.gnu.org/gnu/binutils"
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GDB_VERSION="10.2"
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GDB_MD5SUM="7aeb896762924ae9a2ec59525088bada"
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GDB_NAME="gdb-$GDB_VERSION"
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GDB_PKG="${GDB_NAME}.tar.gz"
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GDB_BASE_URL="http://ftp.gnu.org/gnu/gdb"
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# Note: If you bump the gcc version, you also have to update the matching
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# GCC_VERSION variable in the project's root CMakeLists.txt
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GCC_VERSION="11.2.0"
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@ -174,6 +180,21 @@ popd
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# === DOWNLOAD AND PATCH ===
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pushd "$DIR/Tarballs"
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# Build aarch64-gdb for cross-debugging support on x86 systems
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if [ "$ARCH" = "aarch64" ]; then
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md5=""
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if [ -e "$GDB_PKG" ]; then
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md5="$($MD5SUM $GDB_PKG | cut -f1 -d' ')"
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echo "bu md5='$md5'"
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fi
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if [ "$md5" != ${GDB_MD5SUM} ] ; then
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rm -f $GDB_PKG
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curl -LO "$GDB_BASE_URL/$GDB_PKG"
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else
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echo "Skipped downloading gdb"
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fi
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fi
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md5=""
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if [ -e "$BINUTILS_PKG" ]; then
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md5="$($MD5SUM $BINUTILS_PKG | cut -f1 -d' ')"
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@ -198,6 +219,27 @@ pushd "$DIR/Tarballs"
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echo "Skipped downloading gcc"
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fi
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if [ "$ARCH" = "aarch64" ]; then
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if [ -d ${GDB_NAME} ]; then
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rm -rf "${GDB_NAME}"
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rm -rf "$DIR/Build/$ARCH/$GDB_NAME"
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fi
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echo "Extracting GDB..."
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tar -xzf ${GDB_PKG}
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pushd ${GDB_NAME}
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if [ "$git_patch" = "1" ]; then
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git init > /dev/null
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git add . > /dev/null
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git commit -am "BASE" > /dev/null
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git apply "$DIR"/Patches/gdb.patch > /dev/null
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else
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patch -p1 < "$DIR"/Patches/gdb.patch > /dev/null
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fi
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$MD5SUM "$DIR"/Patches/gdb.patch > .patch.applied
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popd
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fi
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if [ -d ${BINUTILS_NAME} ]; then
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rm -rf "${BINUTILS_NAME}"
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rm -rf "$DIR/Build/$ARCH/$BINUTILS_NAME"
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@ -259,6 +301,24 @@ mkdir -p "$DIR/Build/$ARCH"
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pushd "$DIR/Build/$ARCH"
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unset PKG_CONFIG_LIBDIR # Just in case
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if [ "$ARCH" = "aarch64" ]; then
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rm -rf gdb
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mkdir -p gdb
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pushd gdb
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echo "XXX configure gdb"
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buildstep "gdb/configure" "$DIR"/Tarballs/$GDB_NAME/configure --prefix="$PREFIX" \
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--target="$TARGET" \
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--with-sysroot="$SYSROOT" \
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--enable-shared \
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--disable-nls \
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${TRY_USE_LOCAL_TOOLCHAIN:+"--quiet"} || exit 1
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echo "XXX build gdb"
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buildstep "gdb/build" "$MAKE" -j "$MAKEJOBS" || exit 1
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buildstep "gdb/install" "$MAKE" install || exit 1
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popd
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fi
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rm -rf binutils
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mkdir -p binutils
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40
Toolchain/Patches/gdb.patch
Normal file
40
Toolchain/Patches/gdb.patch
Normal file
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@ -0,0 +1,40 @@
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diff -ur gdb-10.2-orig/bfd/config.bfd gdb-10.2/bfd/config.bfd
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--- gdb-10.2-orig/bfd/config.bfd 2021-04-25 07:06:26.000000000 +0300
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+++ gdb-10.2/bfd/config.bfd 2021-09-07 01:14:58.781960654 +0300
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@@ -224,7 +224,25 @@
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case "${targ}" in
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# START OF targmatch.h
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+ i[3-7]86-*-serenity*)
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+ targ_defvec=i386_elf32_vec
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+ targ_selvecs=
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+ ;;
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+ arm-*-serenity*)
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+ targ_defvec=arm_elf32_le_vec
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+ targ_selvecs=
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+ ;;
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#ifdef BFD64
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+ x86_64-*-serenity*)
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+ targ_defvec=x86_64_elf64_vec
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+ targ_selvecs=i386_elf32_vec
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+ want64=true
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+ ;;
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+ aarch64-*-serenity*)
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+ targ_defvec=aarch64_elf64_le_vec
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+ targ_selvecs=
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+ want64=true
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+ ;;
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aarch64-*-darwin*)
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targ_defvec=aarch64_mach_o_vec
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targ_selvecs="arm_mach_o_vec mach_o_le_vec mach_o_be_vec mach_o_fat_vec"
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diff -ur gdb-10.2-orig/config.sub gdb-10.2/config.sub
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--- gdb-10.2-orig/config.sub 2021-04-25 07:06:26.000000000 +0300
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+++ gdb-10.2/config.sub 2021-09-07 01:20:15.360899801 +0300
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@@ -1339,6 +1339,7 @@
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# Each alternative MUST end in a * to match a version number.
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# sysv* is not here because it comes later, after sysvr4.
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gnu* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
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+ | serenity* \
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| *vms* | esix* | aix* | cnk* | sunos | sunos[34]*\
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| hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
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| sym* | kopensolaris* | plan9* \
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