On 06/02/2017 10:05 AM, Alex Bennée wrote:
The thread-id of 0 means any CPU but we then ignore the fact we find
the first_cpu in this case who can have an index of 0. Instead of
bailing out just test if we have managed to match up thread-id to a
CPU.
Otherwise you get:
gdb_handle_packet: command='vCont;C04:0;c'
put_packet: reply='E22'
The actual reason for gdb sending vCont;C04:0;c was fixed in a
previous commit where we ensure the first_cpu's tid is correctly
reported to gdb however we should still behave correctly next time it
does send 0.
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
Reviewed-by: Greg Kurz <gr...@kaod.org>
Reviewed-by: Claudio Imbrenda <imbre...@linux.vnet.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
v2
- used Greg's less convoluted suggestion
- expand commit message
---
gdbstub.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/gdbstub.c b/gdbstub.c
index 45a3a0b16b..6b1e72e9f7 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -937,23 +937,16 @@ static int gdb_handle_vcont(GDBState *s, const char *p)
if (res) {
goto out;
}
- idx = tmp;
+
/* 0 means any thread, so we pick the first valid CPU */
- if (!idx) {
- idx = cpu_gdb_index(first_cpu);
- }
+ cpu = tmp ? find_cpu(tmp) : first_cpu;
- /*
- * If we are in user mode, the thread specified is actually a
- * thread id, and not an index. We need to find the actual
- * CPU first, and only then we can use its index.
- */
- cpu = find_cpu(idx);
/* invalid CPU/thread specified */
- if (!idx || !cpu) {
+ if (!cpu) {
res = -EINVAL;
goto out;
}
+
/* only use if no previous match occourred */
if (newstates[cpu->cpu_index] == 1) {
newstates[cpu->cpu_index] = cur_action;
