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gdbstub/linux-user: support debugging over a unix socket

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While debugging over TCP is fairly straightforward now we have test
cases that want to orchestrate via make and currently a parallel build
fails as two processes can't use the same listening port. While system
emulation offers a wide cornucopia of connection methods thanks to the
chardev abstraction we are a little more limited for linux user.
Thankfully the programming API for a TCP socket and a local UNIX
socket is pretty much the same once it's set up.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200430190122.4592-7-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2020-04-30 20:01:19 +01:00
parent e0a1e20847
commit fcedd92086
4 changed files with 106 additions and 31 deletions
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14
include/exec/gdbstub.h
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@ -177,11 +177,15 @@ static inline uint8_t * gdb_get_reg_ptr(GByteArray *buf, int len)
#endif
#ifdef CONFIG_USER_ONLY
int gdbserver_start(int);
#else
int gdbserver_start(const char *port);
#endif
/**
* gdbserver_start: start the gdb server
* @port_or_device: connection spec for gdb
*
* For CONFIG_USER this is either a tcp port or a path to a fifo. For
* system emulation you can use a full chardev spec for your gdbserver
* port.
*/
int gdbserver_start(const char *port_or_device);
void gdbserver_cleanup(void);