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* remote.c: Move comments regarding packets to top of file with the 

rest of the protocol comments.
	Fix incorrect description of 'T' response.
This commit is contained in:
Jim Kingdon 1993-06-25 19:44:18 +00:00
parent 3576a41210
commit e50ebec874
2 changed files with 32 additions and 26 deletions
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4
gdb/ChangeLog
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@ -1,5 +1,9 @@
Fri Jun 25 11:22:28 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* remote.c: Move comments regarding packets to top of file with the
rest of the protocol comments.
Fix incorrect description of 'T' response.
* README (Reporting Bugs): Refer people to the GDB manual.
* c-valprint.c (c_val_print): Handle TYPE_CODE_BOOLEAN.

54
gdb/remote.c
View File

@ -18,6 +18,25 @@ along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Remote communication protocol.
A debug packet whose contents are <data>
is encapsulated for transmission in the form:
$ <data> # CSUM1 CSUM2
<data> must be ASCII alphanumeric and cannot include characters
'$' or '#'
CSUM1 and CSUM2 are ascii hex representation of an 8-bit
checksum of <data>, the most significant nibble is sent first.
the hex digits 0-9,a-f are used.
Receiver responds with:
+ - if CSUM is correct and ready for next packet
- - if CSUM is incorrect
<data> is as follows:
All values are encoded in ascii hex digits.
Request Packet
@ -63,10 +82,10 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
The reply comes when the machine stops.
It is SAA AA is the "signal number"
or... TAAPPPPPPPPFFFFFFFF
where AA is the signal number,
PPPPPPPP is the PC (PC_REGNUM), and
FFFFFFFF is the frame ptr (FP_REGNUM).
or... TAAn...:r...;n:r...;n...:r...;
AA = signal number
n... = register number
r... = register contents
kill req k
*/
@ -76,6 +95,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <fcntl.h>
#include "frame.h"
#include "inferior.h"
#include "bfd.h"
#include "symfile.h"
#include "target.h"
#include "wait.h"
@ -255,7 +275,7 @@ device is attached to the remote system (e.g. /dev/ttya).");
/* Start the remote connection; if error (0), discard this target. */
immediate_quit++; /* Allow user to interrupt it */
if (!catch_errors (remote_start_remote, (char *)0,
"Couldn't establish connection to remote target\n"))
"Couldn't establish connection to remote target\n", RETURN_MASK_ALL))
pop_target();
}
@ -368,7 +388,7 @@ remote_interrupt_twice (signo)
Give up (and stop debugging it)? "))
{
target_mourn_inferior ();
return_to_top_level ();
return_to_top_level (RETURN_QUIT);
}
else
{
@ -654,26 +674,8 @@ struct target_ops *ignore;
puts_filtered ("Debugging a target over a serial line.\n");
}
/*
A debug packet whose contents are <data>
is encapsulated for transmission in the form:
$ <data> # CSUM1 CSUM2
<data> must be ASCII alphanumeric and cannot include characters
'$' or '#'
CSUM1 and CSUM2 are ascii hex representation of an 8-bit
checksum of <data>, the most significant nibble is sent first.
the hex digits 0-9,a-f are used.
Receiver responds with:
+ - if CSUM is correct and ready for next packet
- - if CSUM is incorrect
*/
/* Stuff for dealing with the packets which are part of this protocol.
See comment at top of file for details. */
/* Read a single character from the remote end, masking it down to 7 bits. */