Modify the gdb server so a continue command appears to resume execution
when in RUN_STATE_SUSPENDED. Do not print the next gdb prompt, but do not
actually resume instruction fetch. While in this "fake" running mode, a
ctrl-C returns the user to the gdb prompt.
Signed-off-by: Steve Sistare <steven.sist...@oracle.com>
---
gdbstub.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/gdbstub.c b/gdbstub.c
index f3a318c..2f0d9ff 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -461,7 +461,9 @@ static inline void gdb_continue(void)
#else
if (!runstate_needs_reset()) {
trace_gdbstub_op_continue();
- vm_start();
+ if (!runstate_check(RUN_STATE_SUSPENDED)) {
+ vm_start();
+ }
}
#endif
}
@@ -490,7 +492,7 @@ static int gdb_continue_partial(char *newstates)
int flag = 0;
if (!runstate_needs_reset()) {
- if (vm_prepare_start()) {
+ if (!runstate_check(RUN_STATE_SUSPENDED) && vm_prepare_start()) {
return 0;
}
@@ -2835,6 +2837,9 @@ static void gdb_read_byte(uint8_t ch)
/* when the CPU is running, we cannot do anything except stop
it when receiving a char */
vm_stop(RUN_STATE_PAUSED);
+ } else if (runstate_check(RUN_STATE_SUSPENDED) && ch == 3) {
+ /* Received ctrl-c from gdb */
+ gdb_vm_state_change(0, 0, RUN_STATE_PAUSED);
} else
#endif
{
@@ -3282,6 +3287,8 @@ static void gdb_sigterm_handler(int signal)
{
if (runstate_is_running()) {
vm_stop(RUN_STATE_PAUSED);
+ } else if (runstate_check(RUN_STATE_SUSPENDED)) {
+ gdb_vm_state_change(0, 0, RUN_STATE_PAUSED);
}
}
#endif
--
1.8.3.1
