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X-Received-From: 2a00:1450:4864:20::341 Subject: [Qemu-devel] [PATCH v10 02/20] gdbstub: Implement deatch (D pkt) with new infra X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, Jon Doron Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Signed-off-by: Jon Doron --- gdbstub.c | 93 +++++++++++++++++++++++++++++++------------------------ 1 file changed, 53 insertions(+), 40 deletions(-) diff --git a/gdbstub.c b/gdbstub.c index e6d895177b..307366b250 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -1413,11 +1413,6 @@ static inline int startswith(const char *string, con= st char *pattern) return !strncmp(string, pattern, strlen(pattern)); } =20 -static int process_string_cmd( - GDBState *s, void *user_ctx, const char *data, - const GdbCmdParseEntry *cmds, int num_cmds) - __attribute__((unused)); - static int process_string_cmd(GDBState *s, void *user_ctx, const char *dat= a, const GdbCmdParseEntry *cmds, int num_cmds) { @@ -1463,6 +1458,41 @@ static int process_string_cmd(GDBState *s, void *use= r_ctx, const char *data, return -1; } =20 +static void handle_detach(GdbCmdContext *gdb_ctx, void *user_ctx) +{ + GDBProcess *process; + GDBState *s =3D gdb_ctx->s; + uint32_t pid =3D 1; + + if (s->multiprocess) { + if (!gdb_ctx->num_params) { + put_packet(s, "E22"); + return; + } + + pid =3D gdb_ctx->params[0].val_ul; + } + + process =3D gdb_get_process(s, pid); + gdb_process_breakpoint_remove_all(s, process); + process->attached =3D false; + + if (pid =3D=3D gdb_get_cpu_pid(s, s->c_cpu)) { + s->c_cpu =3D gdb_first_attached_cpu(s); + } + + if (pid =3D=3D gdb_get_cpu_pid(s, s->g_cpu)) { + s->g_cpu =3D gdb_first_attached_cpu(s); + } + + if (!s->c_cpu) { + /* No more process attached */ + gdb_syscall_mode =3D GDB_SYS_DISABLED; + gdb_continue(s); + } + put_packet(s, "OK"); +} + static int gdb_handle_packet(GDBState *s, const char *line_buf) { CPUState *cpu; @@ -1477,6 +1507,7 @@ static int gdb_handle_packet(GDBState *s, const char = *line_buf) uint8_t *registers; target_ulong addr, len; GDBThreadIdKind thread_kind; + const GdbCmdParseEntry *cmd_parser =3D NULL; =20 trace_gdbstub_io_command(line_buf); =20 @@ -1577,42 +1608,15 @@ static int gdb_handle_packet(GDBState *s, const cha= r *line_buf) error_report("QEMU: Terminated via GDBstub"); exit(0); case 'D': - /* Detach packet */ - pid =3D 1; - - if (s->multiprocess) { - unsigned long lpid; - if (*p !=3D ';') { - put_packet(s, "E22"); - break; - } - - if (qemu_strtoul(p + 1, &p, 16, &lpid)) { - put_packet(s, "E22"); - break; - } - - pid =3D lpid; - } - - process =3D gdb_get_process(s, pid); - gdb_process_breakpoint_remove_all(s, process); - process->attached =3D false; - - if (pid =3D=3D gdb_get_cpu_pid(s, s->c_cpu)) { - s->c_cpu =3D gdb_first_attached_cpu(s); - } - - if (pid =3D=3D gdb_get_cpu_pid(s, s->g_cpu)) { - s->g_cpu =3D gdb_first_attached_cpu(s); - } - - if (s->c_cpu =3D=3D NULL) { - /* No more process attached */ - gdb_syscall_mode =3D GDB_SYS_DISABLED; - gdb_continue(s); + { + static const GdbCmdParseEntry detach_cmd_desc =3D { + .handler =3D handle_detach, + .cmd =3D "D", + .cmd_startswith =3D 1, + .schema =3D "?.l0" + }; + cmd_parser =3D &detach_cmd_desc; } - put_packet(s, "OK"); break; case 's': if (*p !=3D '\0') { @@ -1985,6 +1989,15 @@ static int gdb_handle_packet(GDBState *s, const char= *line_buf) put_packet(s, buf); break; } + + if (cmd_parser) { + /* helper will respond */ + process_string_cmd(s, NULL, line_buf, cmd_parser, 1); + } else { + /* unknown command, empty respone */ + put_packet(s, ""); + } + return RS_IDLE; } =20 --=20 2.21.0