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gdbstub:fix get thread rsp command crash

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riscv-gdb/gdb/thread.c:1309: internal-error: void switch_to_thread(thread_info*): Assertion `thr != NULL' failed.

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao 2024-03-25 11:27:38 +08:00 committed by Xiang Xiao
parent a5cd1cf89b
commit 3312ab2087
1 changed files with 44 additions and 3 deletions
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47
libs/libc/gdbstub/lib_gdbstub.c
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@ -781,6 +781,39 @@ static int gdb_send_ok_packet(FAR struct gdb_state_s *state)
return gdb_send_packet(state);
}
/****************************************************************************
* Name: gdb_send_signal_packet
*
* Description:
* Send a signal packet (S AA).
*
* Input Parameters:
* state - The pointer to the GDB state structure.
* signal - The signal to send.
*
* Returned Value:
* Zero on success.
* Negative value on error.
*
****************************************************************************/
static int gdb_send_signal_packet(FAR struct gdb_state_s *state,
unsigned char signal)
{
int ret;
state->pkt_buf[0] = 'S';
ret = gdb_bin2hex(&state->pkt_buf[1], sizeof(state->pkt_buf) - 1,
&signal, 1);
if (ret < 0)
{
return ret;
}
state->pkt_len = 1 + ret;
return gdb_send_packet(state);
}
/****************************************************************************
* Name: gdb_send_error_packet
*
@ -1316,6 +1349,7 @@ static int gdb_is_thread_active(FAR struct gdb_state_s *state)
* Negative value on error.
*
* Note : Comand Format: Hg<id>
* Hc-<id>
* Rsponse Format: OK
****************************************************************************/
@ -1325,12 +1359,19 @@ static int gdb_thread_context(FAR struct gdb_state_s *state)
uintptr_t pid;
int ret;
if (state->pkt_buf[1] != 'g')
if (state->pkt_buf[1] == 'g')
{
state->pkt_next += 2;
}
else if (state->pkt_buf[1] == 'c')
{
state->pkt_next += 3;
}
else
{
return -EINVAL;
}
state->pkt_next += 2;
ret = gdb_expect_integer(state, &pid);
if (ret < 0)
{
@ -1756,7 +1797,7 @@ int gdb_process(FAR struct gdb_state_s *state, int stopreason,
switch (state->pkt_buf[0])
{
case '?': /* gdbserial status */
ret = gdb_send_stop(state, stopreason, stopaddr);
ret = gdb_send_signal_packet(state, 0x00);
break;
case 'g': /* Read registers */
ret = gdb_read_registers(state);