Hello all,
I'd like to propose improvements to OpenOCD's semihosting behavior for
the SYS_EXIT and SYS_EXIT_EXTENDED syscalls.
Currently, if GDB is not connected and the target calls `SYS_EXIT` or
`SYS_EXIT_EXTENDED` (with the appropriate parameter):
* If GDB is not connected - OpenOCD calls `exit(code)` immediately,
without any cleanup. I believe this should be fixed - OpenOCD should
go trough the standard shutdown sequence.
* If GDB is connected - message is printed and target is either halted
or resumed depending on `arm semihosting_resexit`.
I would like to make these improvements:
1. Avoid the direct call to `exit()`
2. Introduce a new command: `arm semihosting_exit_behavior`
The options would be:
* `always_halt`
* `always_exit`
* `exit_if_no_gdb`
3. Introduce commands to get the program exit code in Tcl scripts:
* `arm semihosting_has_program_exited` - would return true if the
semihosting exit already happened
* `arm semihosting_exit_code` - returns exit code (from
`SYS_EXIT_EXTENDED`)
Would you be in favor of this proposal? I welcome any comments.
Thank you,
Marek Vrbka
