Committed.
--
Øyvind Harboe
http://www.zylin.com/zy1000.html
ARM7 ARM9 ARM11 XScale Cortex
JTAG debugger and flash programmer
From 38c9ee7b4fcae126b05fb4ddbaec5fb0362a0b01 Mon Sep 17 00:00:00 2001
From: =?utf-8?q?=C3=98yvind=20Harboe?= <oyvind.har...@zylin.com>
Date: Thu, 8 Oct 2009 14:53:25 +0200
Subject: [PATCH] Stop GDB when polling fails, srst assert or powerdropout is detected
---
src/server/gdb_server.c | 2 +-
src/target/target.c | 18 ++++++++++++++++--
src/target/target.h | 10 ++++++++--
3 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/src/server/gdb_server.c b/src/server/gdb_server.c
index 44d9de8..a0077e9 100644
--- a/src/server/gdb_server.c
+++ b/src/server/gdb_server.c
@@ -714,7 +714,7 @@ int gdb_target_callback_event_handler(struct target_s *target, enum target_event
target_handle_event(target, event);
switch (event)
{
- case TARGET_EVENT_EARLY_HALTED:
+ case TARGET_EVENT_GDB_HALT:
gdb_frontend_halted(target, connection);
break;
case TARGET_EVENT_HALTED:
diff --git a/src/target/target.c b/src/target/target.c
index 0040ba0..253a7e4 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -157,7 +157,7 @@ static const Jim_Nvp nvp_target_event[] = {
{ .value = TARGET_EVENT_OLD_gdb_program_config , .name = "old-gdb_program_config" },
{ .value = TARGET_EVENT_OLD_pre_resume , .name = "old-pre_resume" },
- { .value = TARGET_EVENT_EARLY_HALTED, .name = "early-halted" },
+ { .value = TARGET_EVENT_GDB_HALT, .name = "gdb-halt" },
{ .value = TARGET_EVENT_HALTED, .name = "halted" },
{ .value = TARGET_EVENT_RESUMED, .name = "resumed" },
{ .value = TARGET_EVENT_RESUME_START, .name = "resume-start" },
@@ -821,7 +821,7 @@ int target_call_event_callbacks(target_t *target, enum target_event event)
if (event == TARGET_EVENT_HALTED)
{
/* execute early halted first */
- target_call_event_callbacks(target, TARGET_EVENT_EARLY_HALTED);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
}
LOG_DEBUG("target event %i (%s)",
@@ -1658,6 +1658,15 @@ static int sense_handler(void)
return ERROR_OK;
}
+static void target_call_event_callbacks_all(enum target_event e) {
+ target_t *target;
+ target = all_targets;
+ while (target) {
+ target_call_event_callbacks(target, e);
+ target = target->next;
+ }
+}
+
/* process target state changes */
int handle_target(void *priv)
{
@@ -1676,6 +1685,7 @@ int handle_target(void *priv)
int did_something = 0;
if (runSrstAsserted)
{
+ target_call_event_callbacks_all(TARGET_EVENT_GDB_HALT);
Jim_Eval(interp, "srst_asserted");
did_something = 1;
}
@@ -1686,6 +1696,7 @@ int handle_target(void *priv)
}
if (runPowerDropout)
{
+ target_call_event_callbacks_all(TARGET_EVENT_GDB_HALT);
Jim_Eval(interp, "power_dropout");
did_something = 1;
}
@@ -1726,7 +1737,10 @@ int handle_target(void *priv)
{
/* polling may fail silently until the target has been examined */
if ((retval = target_poll(target)) != ERROR_OK)
+ {
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
return retval;
+ }
}
}
diff --git a/src/target/target.h b/src/target/target.h
index 0ff2258..6547d4d 100644
--- a/src/target/target.h
+++ b/src/target/target.h
@@ -163,8 +163,14 @@ enum target_event
/* allow GDB to do stuff before others handle the halted event,
* this is in lieu of defining ordering of invocation of events,
- * which would be more complicated */
- TARGET_EVENT_EARLY_HALTED,
+ * which would be more complicated
+ *
+ * Telling GDB to halt does not mean that the target stopped running,
+ * simply that we're dropping out of GDB's waiting for step or continue.
+ *
+ * This can be useful when e.g. detecting power dropout.
+ */
+ TARGET_EVENT_GDB_HALT,
TARGET_EVENT_HALTED, /* target entered debug state from normal execution or reset */
TARGET_EVENT_RESUMED, /* target resumed to normal execution */
TARGET_EVENT_RESUME_START,
--
1.6.0.4
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