semihosting_write bug in generic about opensbi

[wxjstz]

syscall normally return the number of bytes that are not written
semihosting_write in opensbi normally return the number of bytes that has been written
semihosting_puts in opensbi normally return the number of bytes that has been written

Regards,
Xiang W

[zxtxin]

In linux, the syscall write returns the true length it writes.
I don't know why there is a difference in the implementation of openocd.

[zxtxin]

I'm using the cklink from t-head to debug a riscv core C908. Its implementation complys with the convention of linux write

[wxjstz]

Its implementation complys with the convention of linux write

opensbi not running on linux. It running on debugger. You need to know how this debugger implements syscall. Like this: https://github.com/openocd-org/openocd/blob/master/src/target/semihosting_common.c#L1365

[cp0613]

You can download the latest XuanTie Debug Server from https://www.xrvm.cn/ and add the -ls parameter at startup to use semihosting, such as # DebugServerConsole - prereset - ls

[wxjstz]

XuanTie implements a strange SYS_WRITE. Is this weird stuff going to spread to all software?