Currently, F reply packets in gdbstub/user-target.c emit the host's errno values [1], but to facilitate host<->target independence the GDB File-I/O protocol defines its own set of supported errno values that should be used in replies instead.
This series sees to that by: Patch 2: Exporting a mapping helper function statically defined in m68k-dependent code by declaring it in include/gdbstub/syscalls.h with the GDB File-I/O errno values, and moving the definition to gdbstub/syscalls.c. Patch 3: Passing the host errnos to the newly global mapping function before emitting the result in F reply packets. Please note that this patch resolves the final task remaining in GitLab issue #2751. Patch 1 adds two GDB File-I/O errno values that were previously undocumented despite having support. To Alex Bennée: Thanks for reviewing v1! I deliberately left out the Reviewed-by git trailer, because the patch underwent nontrivial changes, and I did not think I could include it in good faith. Your comment about the existing File-I/O errno values led me to the helper function in the target-dependent code. Thanks! Changes in v2: - Split into multiple commits - Use existing mapping function (host_to_gdb_errno) via exportation Link to v1: https://lore.kernel.org/qemu-devel/[email protected]/ [1] https://gitlab.com/qemu-project/qemu/-/issues/2751 Yodel Eldar (3): include/gdbstub/syscalls: Add GDB_{EIO,ENOSYS} errno values gdbstub: Export host_to_gdb_errno File-I/O helper function gdbstub/user-target: Convert host errno to GDB File-I/O errno gdbstub/syscalls.c | 36 ++++++++++++++++++++++++++++++++++++ gdbstub/user-target.c | 13 +++++++++---- include/gdbstub/syscalls.h | 11 +++++++++++ target/m68k/m68k-semi.c | 29 ----------------------------- 4 files changed, 56 insertions(+), 33 deletions(-) -- 2.51.1.dirty
