Sure. In order to understand this patch, you have to read the comments given on
first half of the SYS_READ in the same file somewhere above explaining the GDB
protocol return value for SYS_READ
The GDB remote semihosting protocol implements SYS_READ but returns the
(requested bytes - actually read bytes) in its result value. The patched
function translates this return value into values which would be returned from
the "normal" read call (the number of bytes actually read).
I have no idea how to use Gerrit, is there some kind of instructions available.
BTW, I tried to fork the OpenOCD repository on SF and many hours later I got an
email from SF telling me that this operation failed. If a fork is necessary to
submit something to Gerrit, I am out of business...
---
** [tickets:#232] semihosting_fileio read return wrong number of read bytes**
**Status:** new
**Milestone:** 0.9.0
**Created:** Sun Apr 21, 2019 04:18 PM UTC by hogthrob
**Last Updated:** Sun Apr 21, 2019 07:07 PM UTC
**Owner:** nobody
The current implementation of read for semihosting_fileio read works only for
reads returning exactly the requested amount OR in case of EOF/ERROR.
In the case of "not full" read with respect to requested bytes, the number of
requested bytes - returned bytes was returned (i.e. how many bytes have not
been read), which should have been the number of read bytes.
Please integrate the following fix:
https://github.com/db4ple/openocd/commit/0a87bac689a271c8e6fb97a48ee23e4d019a4438
---
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