Hi Alex, This is what I came up with when thinking about your user/softmmu and syscall split.
r~ Alex Bennée (24): gdbstub/internals.h: clean up include guard gdbstub: fix-up copyright and license files gdbstub: clean-up indent on gdb_exit gdbstub: define separate user/system structures gdbstub: move GDBState to shared internals header includes: move tb_flush into its own header gdbstub: move fromhex/tohex routines to internals gdbstub: make various helpers visible to the rest of the module gdbstub: move chunk of softmmu functionality to own file gdbstub: move chunks of user code into own files gdbstub: rationalise signal mapping in softmmu gdbstub: abstract target specific details from gdb_put_packet_binary gdbstub: specialise handle_query_attached gdbstub: specialise target_memory_rw_debug gdbstub: introduce gdb_get_max_cpus gdbstub: specialise stub_can_reverse gdbstub: fix address type of gdb_set_cpu_pc gdbstub: don't use target_ulong while handling registers gdbstub: move register helpers into standalone include gdbstub: move syscall handling to new file gdbstub: only compile gdbstub twice for whole build testing: probe gdb for supported architectures ahead of time include: split target_long definition from cpu-defs gdbstub: split out softmmu/user specifics for syscall handling Mads Ynddal (1): gdbstub: move update guest debug to accel ops Philippe Mathieu-Daudé (1): gdbstub: Make syscall_complete/[gs]et_reg target-agnostic typedefs Richard Henderson (3): gdbstub: Remove gdb_do_syscallv gdbstub: Adjust gdb_do_syscall to only use uint32_t and uint64_t gdbstub: Build syscall.c once MAINTAINERS | 4 + configure | 8 + gdbstub/internals.h | 212 ++- include/exec/cpu-defs.h | 19 +- include/exec/exec-all.h | 1 - include/exec/gdbstub.h | 208 --- include/exec/target_long.h | 42 + include/exec/tb-flush.h | 26 + include/gdbstub/helpers.h | 103 + include/gdbstub/syscalls.h | 113 ++ include/gdbstub/user.h | 43 + include/sysemu/accel-ops.h | 1 + linux-user/user-internals.h | 1 + accel/kvm/kvm-accel-ops.c | 8 + accel/stubs/tcg-stub.c | 1 + accel/tcg/tb-maint.c | 1 + accel/tcg/translate-all.c | 1 + cpu.c | 12 +- gdbstub/gdbstub.c | 1655 ++--------------- gdbstub/softmmu.c | 603 +++++- gdbstub/syscalls.c | 204 ++ gdbstub/user-target.c | 283 +++ gdbstub/user.c | 423 ++++- hw/ppc/spapr_hcall.c | 1 + linux-user/exit.c | 2 +- linux-user/main.c | 1 + linux-user/signal.c | 2 +- plugins/core.c | 1 + plugins/loader.c | 2 +- semihosting/arm-compat-semi.c | 1 + semihosting/guestfd.c | 2 +- semihosting/syscalls.c | 37 +- softmmu/runstate.c | 2 +- target/alpha/gdbstub.c | 2 +- target/alpha/sys_helper.c | 1 + target/arm/gdbstub.c | 1 + target/arm/gdbstub64.c | 2 +- target/arm/tcg/helper-a64.c | 2 +- target/arm/tcg/m_helper.c | 1 + target/avr/gdbstub.c | 2 +- target/cris/gdbstub.c | 2 +- target/hexagon/gdbstub.c | 2 +- target/hppa/gdbstub.c | 2 +- target/i386/gdbstub.c | 2 +- target/i386/whpx/whpx-all.c | 2 +- target/loongarch/gdbstub.c | 1 + target/m68k/gdbstub.c | 2 +- target/m68k/helper.c | 1 + target/m68k/m68k-semi.c | 3 +- target/microblaze/gdbstub.c | 2 +- target/mips/gdbstub.c | 2 +- target/mips/tcg/sysemu/mips-semi.c | 3 +- target/nios2/cpu.c | 2 +- target/nios2/nios2-semi.c | 3 +- target/openrisc/gdbstub.c | 2 +- target/openrisc/interrupt.c | 2 +- target/openrisc/mmu.c | 2 +- target/ppc/cpu_init.c | 2 +- target/ppc/gdbstub.c | 1 + target/riscv/csr.c | 1 + target/riscv/gdbstub.c | 1 + target/rx/gdbstub.c | 2 +- target/s390x/gdbstub.c | 1 + target/s390x/helper.c | 2 +- target/sh4/gdbstub.c | 2 +- target/sparc/gdbstub.c | 2 +- target/tricore/gdbstub.c | 2 +- target/xtensa/core-dc232b.c | 2 +- target/xtensa/core-dc233c.c | 2 +- target/xtensa/core-de212.c | 2 +- target/xtensa/core-de233_fpu.c | 2 +- target/xtensa/core-dsp3400.c | 2 +- target/xtensa/core-fsf.c | 2 +- target/xtensa/core-lx106.c | 2 +- target/xtensa/core-sample_controller.c | 2 +- target/xtensa/core-test_kc705_be.c | 2 +- target/xtensa/core-test_mmuhifi_c3.c | 2 +- target/xtensa/gdbstub.c | 2 +- target/xtensa/helper.c | 2 +- gdbstub/meson.build | 34 +- gdbstub/trace-events | 4 +- scripts/probe-gdb-support.py | 88 + target/xtensa/import_core.sh | 2 +- tests/tcg/aarch64/Makefile.target | 2 +- tests/tcg/multiarch/Makefile.target | 5 + .../multiarch/system/Makefile.softmmu-target | 6 +- tests/tcg/s390x/Makefile.target | 2 +- 87 files changed, 2439 insertions(+), 1813 deletions(-) create mode 100644 include/exec/target_long.h create mode 100644 include/exec/tb-flush.h create mode 100644 include/gdbstub/helpers.h create mode 100644 include/gdbstub/syscalls.h create mode 100644 include/gdbstub/user.h create mode 100644 gdbstub/syscalls.c create mode 100644 gdbstub/user-target.c create mode 100755 scripts/probe-gdb-support.py -- 2.34.1