[PATCH 8/9] impl of use_agent and can_use_agent in linux-nat.

Yao Qi
2012-02-17T02:57:04Z

This patch is to implement two target_ops hooks on linux-nat, and look up symbols
when a solib is added.

2012-01-13 Yao Qi <yao@codesourcery.com>

* linux-nat.c (linux_child_use_agent): New.
(linux_child_can_use_agent): New.
(linux_target_install_ops): Initialize fields `to_use_agent'
and `to_can_use_agent'.
* solib.c (solib_add): Call agent_look_up_symbol.
---
gdb/linux-nat.c | 22 ++++++++++++++++++++++
gdb/solib.c | 6 +++++-
2 files changed, 27 insertions(+), 1 deletions(-)

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 6aab087..3e81fd0 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -59,6 +59,7 @@
#include "solib.h"
#include "linux-osdata.h"
#include "linux-tdep.h"
+#include "agent.h"

#ifndef SPUFS_MAGIC
#define SPUFS_MAGIC 0x23c9b64e
@@ -4800,6 +4801,24 @@ linux_xfer_partial (struct target_ops *ops, enum target_object object,
offset, len);
}

+static int
+linux_child_use_agent (int use)
+{
+ if (agent_loaded_p ())
+ {
+ use_agent = use;
+ return 1;
+ }
+ else
+ return 0;
+}
+
+static int
+linux_child_can_use_agent (void)
+{
+ return agent_loaded_p ();
+}
+
/* Create a prototype generic GNU/Linux target. The client can override
it with local methods. */

@@ -4821,6 +4840,9 @@ linux_target_install_ops (struct target_ops *t)

super_xfer_partial = t->to_xfer_partial;
t->to_xfer_partial = linux_xfer_partial;
+
+ t->to_use_agent = linux_child_use_agent;
+ t->to_can_use_agent = linux_child_can_use_agent;
}

struct target_ops *
diff --git a/gdb/solib.c b/gdb/solib.c
index 84b9019..4f04f39 100644
--- a/gdb/solib.c
+++ b/gdb/solib.c
@@ -46,6 +46,7 @@
#include "solib.h"
#include "interps.h"
#include "filesystem.h"
+#include "agent.h"

/* Architecture-specific operations. */

@@ -925,7 +926,10 @@ solib_add (char *pattern, int from_tty,
}

if (loaded_any_symbols)
- breakpoint_re_set ();
+ {
+ breakpoint_re_set ();
+ agent_look_up_symbols ();
+ }

if (from_tty && pattern && ! any_matches)
printf_unfiltered
--
1.7.0.4