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Add GDB qAttached support 

With this patch QEMU handles qAttached request from gdb. When QEMU
replies 1, GDB sends a "detach" command at the end of a debugging
session otherwise GDB sends "kill".

The default value for qAttached is 1 on system emulation and 0 on user
emulation.

Based on original version by Fabien Chouteau.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Jan Kiszka 2015-02-07 09:38:44 +01:00 committed by Peter Maydell
parent 4dabe747af
commit a3919386ea
1 changed files with 10 additions and 0 deletions

10
gdbstub.c
View File

@ -41,6 +41,12 @@
#include "qemu/sockets.h" #include "qemu/sockets.h"
#include "sysemu/kvm.h" #include "sysemu/kvm.h"
#ifdef CONFIG_USER_ONLY
#define GDB_ATTACHED "0"
#else
#define GDB_ATTACHED "1"
#endif
static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr, static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr,
uint8_t *buf, int len, bool is_write) uint8_t *buf, int len, bool is_write)
{ {
@ -1195,6 +1201,10 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
put_packet_binary(s, buf, len + 1); put_packet_binary(s, buf, len + 1);
break; break;
} }
if (is_query_packet(p, "Attached", ':')) {
put_packet(s, GDB_ATTACHED);
break;
}
/* Unrecognised 'q' command. */ /* Unrecognised 'q' command. */
goto unknown_command; goto unknown_command;