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gdb/

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2010-05-26  Pedro Alves  <pedro@codesourcery.com>

	* NEWS: Mention the `qRelocInsn' feature.
	* gdbarch.sh (relocate_instruction): New.
	* amd64-tdep.c (rip_relative_offset): New.
	(append_insns): New.
	(amd64_relocate_instruction): New.
	(amd64_init_abi): Install it.
	* i386-tdep.c (append_insns): New.
	(i386_relocate_instruction): New.
	(i386_gdbarch_init): Install it.
	* remote.c (remote_get_noisy_reply): Handle qRelocInsn requests.
	* gdbarch.h, gdbarch.c: Regenerate.

gdb/doc/
2010-05-26  Pedro Alves  <pedro@codesourcery.com>

	* gdb.texinfo (General Query Packets) <qSupported>: Describe the
	`qRelocInsn' feature.
	(Relocate instruction reply packet): New subsection
	of `Tracepoint Packets'.
	(Tracepoint Packets): Mention that packets QTDP and QTStart
	support the qRelocInsn request, and add cross reference to new
	subsection.
This commit is contained in:
Pedro Alves 2010-05-26 18:19:28 +00:00
parent 0a5b531f15
commit dde08ee109
10 changed files with 406 additions and 9 deletions
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62
gdb/remote.c
View file

@ -242,6 +242,8 @@ static void remote_terminal_ours (void);
static int remote_read_description_p (struct target_ops *target);
char *unpack_varlen_hex (char *buff, ULONGEST *result);
/* The non-stop remote protocol provisions for one pending stop reply.
This is where we keep it until it is acknowledged. */
@ -433,6 +435,55 @@ remote_get_noisy_reply (char **buf_p,
buf = *buf_p;
if (buf[0] == 'E')
trace_error (buf);
else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
{
ULONGEST ul;
CORE_ADDR from, to, org_to;
char *p, *pp;
int adjusted_size = 0;
volatile struct gdb_exception ex;
p = buf + strlen ("qRelocInsn:");
pp = unpack_varlen_hex (p, &ul);
if (*pp != ';')
error (_("invalid qRelocInsn packet: %s\n"), buf);
from = ul;
p = pp + 1;
pp = unpack_varlen_hex (p, &ul);
to = ul;
org_to = to;
TRY_CATCH (ex, RETURN_MASK_ALL)
{
gdbarch_relocate_instruction (target_gdbarch, &to, from);
}
if (ex.reason >= 0)
{
adjusted_size = to - org_to;
sprintf (buf, "qRelocInsn:%x", adjusted_size);
putpkt (buf);
}
else if (ex.reason < 0 && ex.error == MEMORY_ERROR)
{
/* Propagate memory errors silently back to the target.
The stub may have limited the range of addresses we
can write to, for example. */
putpkt ("E01");
}
else
{
/* Something unexpectedly bad happened. Be verbose so
we can tell what, and propagate the error back to the
stub, so it doesn't get stuck waiting for a
response. */
exception_fprintf (gdb_stderr, ex,
_("warning: relocating instruction: "));
putpkt ("E01");
}
}
else if (buf[0] == 'O' && buf[1] != 'K')
remote_console_output (buf + 1); /* 'O' message from stub */
else
@ -3584,13 +3635,10 @@ remote_query_supported (void)
if (remote_support_xml)
q = remote_query_supported_append (q, remote_support_xml);
if (q)
{
q = reconcat (q, "qSupported:", q, (char *) NULL);
putpkt (q);
}
else
putpkt ("qSupported");
q = remote_query_supported_append (q, "qRelocInsn+");
q = reconcat (q, "qSupported:", q, (char *) NULL);
putpkt (q);
do_cleanups (old_chain);