This patchset makes handle_q_memtag, handle_q_isaddresstagged, and handle_Q_memtag stubs build for system mode, allowing all GDB 'memory-tag' subcommands to work with QEMU gdbstub on aarch64 system mode, resolving:
https://gitlab.com/qemu-project/qemu/-/issues/620 For running the tests, a GDB that supports MTE for baremetal targets is necessary. This support has just landed GDB's master branch. GDB can be built and installed into a /tmp directory in a simple way: after cloning GDB's master branch, inside a build directory, configure GDB and build it: $ git clone --depth 1 https://sourceware.org/git/binutils-gdb.git --branch master gdb_master && cd gdb_master $ mkdir build && cd build $ ../configure --disable-binutils --disable-ld --disable-gold --disable-gas --disable-sim --disable-gprof --disable-gprofng --with-python=python3 --enable-libctf --enable-unit-tests --prefix=/tmp/gdb --with-additional-debug-dirs=/usr/lib/debug --enable-targets=all $ make -j 32 $ make install Configure QEMU, specifying where GDB is installed. For example: $ cd build $ ../configure --target-list=aarch64-linux-user,aarch64-softmmu --disable-docs --gdb=/tmp/gdb/bin/gdb $ make -j 32 $ cd.. And finally run the MTE gdbstub tests for QEMU system mode: $ make -C build -j 32 run-tcg-tests-aarch64-softmmu v2: - Use of cpu_mmu_index() instead of arm_mmu_idx() (Richard's review) - Converted mte.c test to mte.S - Set tcr_el1, mair_el1, and sctlr_el1 in mte.S instead of in boot.S (Richard's review) - Allowed use of argparse in test scripts to get passed arguments from run-test.py (Alex's review) - Fixed test output to be stored in run-gdbstub-mte.out instead of printed to stdout - Added detection of GDB supporting MTE in baremetal v3: - No need of ARM_MMU_IDX_COREIDX_MASK with cpu_mmu_index() (Richard's review) - Define a symbol for mte_page instead of a whole section (Richard's review) v4: - Better representation for MiB using M suffix in linker script (Phil's review) - Improve linker script organization (Richard's review) Cheers, Gustavo Gustavo Romero (5): gdbstub: Use specific MMU index when probing MTE addresses gdbstub: Add support for MTE in system mode tests/guest-debug: Support passing arguments to the GDB test script tests/tcg/aarch64: Improve linker script organization tests/tcg/aarch64: Extend MTE gdbstub tests to system mode configure | 5 + target/arm/gdbstub64.c | 21 +++-- tests/guest-debug/run-test.py | 6 ++ tests/guest-debug/test_gdbstub.py | 5 + tests/tcg/aarch64/Makefile.softmmu-target | 49 +++++++++- tests/tcg/aarch64/Makefile.target | 3 +- tests/tcg/aarch64/gdbstub/test-mte.py | 71 +++++++++----- tests/tcg/aarch64/system/boot.S | 11 +++ tests/tcg/aarch64/system/kernel.ld | 33 ++++--- tests/tcg/aarch64/system/mte.S | 109 ++++++++++++++++++++++ 10 files changed, 266 insertions(+), 47 deletions(-) create mode 100644 tests/tcg/aarch64/system/mte.S -- 2.34.1
