/* Remote target communications for serial-line targets in custom GDB protocol
Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+ 2010 Free Software Foundation, Inc.
This file is part of GDB.
#include "remote-fileio.h"
#include "gdb/fileio.h"
#include "gdb_stat.h"
+#include "xml-support.h"
#include "memory-map.h"
+#include "tracepoint.h"
+#include "ax.h"
+#include "ax-gdb.h"
+
+/* temp hacks for tracepoint encoding migration */
+static char *target_buf;
+static long target_buf_size;
+/*static*/ void
+encode_actions (struct breakpoint *t, struct bp_location *tloc,
+ char ***tdp_actions, char ***stepping_actions);
+
/* The size to align memory write packets, when practical. The protocol
does not guarantee any alignment, and gdb will generate short
writes and unaligned writes, but even as a best-effort attempt this
static void cleanup_sigint_signal_handler (void *dummy);
static void initialize_sigint_signal_handler (void);
static int getpkt_sane (char **buf, long *sizeof_buf, int forever);
+static int getpkt_or_notif_sane (char **buf, long *sizeof_buf,
+ int forever);
static void handle_remote_sigint (int);
static void handle_remote_sigint_twice (int);
static void remote_prepare_to_store (struct regcache *regcache);
-static void remote_fetch_registers (struct regcache *regcache, int regno);
-
-static void remote_resume (ptid_t ptid, int step,
- enum target_signal siggnal);
static void remote_open (char *name, int from_tty);
static void extended_remote_open (char *name, int from_tty);
static void remote_close (int quitting);
-static void remote_store_registers (struct regcache *regcache, int regno);
-
-static void remote_mourn (void);
+static void remote_mourn (struct target_ops *ops);
static void extended_remote_restart (void);
-static void extended_remote_mourn (void);
+static void extended_remote_mourn (struct target_ops *);
static void remote_mourn_1 (struct target_ops *);
static int readchar (int timeout);
-static ptid_t remote_wait (ptid_t ptid,
- struct target_waitstatus *status);
-
-static void remote_kill (void);
+static void remote_kill (struct target_ops *ops);
static int tohex (int nib);
static int remote_async_mask (int new_mask);
-static void remote_detach (char *args, int from_tty);
+static void remote_detach (struct target_ops *ops, char *args, int from_tty);
static void remote_interrupt (int signo);
static void set_general_thread (struct ptid ptid);
static void set_continue_thread (struct ptid ptid);
-static int remote_thread_alive (ptid_t);
-
static void get_offsets (void);
static void skip_frame (void);
static void print_packet (char *);
-static unsigned long crc32 (unsigned char *, int, unsigned int);
-
static void compare_sections_command (char *, int);
static void packet_command (char *, int);
static int fromhex (int a);
-static int hex2bin (const char *hex, gdb_byte *bin, int count);
+extern int hex2bin (const char *hex, gdb_byte *bin, int count);
-static int bin2hex (const gdb_byte *bin, char *hex, int count);
+extern int bin2hex (const gdb_byte *bin, char *hex, int count);
static int putpkt_binary (char *buf, int cnt);
struct cmd_list_element *c,
const char *value);
+static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid);
+static ptid_t read_ptid (char *buf, char **obuf);
+
+struct remote_state;
+static int remote_get_trace_status (struct trace_status *ts);
+
+static int remote_upload_tracepoints (struct uploaded_tp **utpp);
+
+static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp);
+
+static void remote_query_supported (void);
+
+static void remote_check_symbols (struct objfile *objfile);
+
void _initialize_remote (void);
+struct stop_reply;
+static struct stop_reply *stop_reply_xmalloc (void);
+static void stop_reply_xfree (struct stop_reply *);
+static void do_stop_reply_xfree (void *arg);
+static void remote_parse_stop_reply (char *buf, struct stop_reply *);
+static void push_stop_reply (struct stop_reply *);
+static void remote_get_pending_stop_replies (void);
+static void discard_pending_stop_replies (int pid);
+static int peek_stop_reply (ptid_t ptid);
+
+static void remote_async_inferior_event_handler (gdb_client_data);
+static void remote_async_get_pending_events_handler (gdb_client_data);
+
+static void remote_terminal_ours (void);
+
+static int remote_read_description_p (struct target_ops *target);
+
+/* The non-stop remote protocol provisions for one pending stop reply.
+ This is where we keep it until it is acknowledged. */
+
+static struct stop_reply *pending_stop_reply = NULL;
+
/* For "remote". */
static struct cmd_list_element *remote_cmdlist;
expect acks from each other. The connection is assumed to be
reliable. */
int noack_mode;
+
+ /* True if we're connected in extended remote mode. */
+ int extended;
+
+ /* True if the stub reported support for multi-process
+ extensions. */
+ int multi_process_aware;
+
+ /* True if we resumed the target and we're waiting for the target to
+ stop. In the mean time, we can't start another command/query.
+ The remote server wouldn't be ready to process it, so we'd
+ timeout waiting for a reply that would never come and eventually
+ we'd close the connection. This can happen in asynchronous mode
+ because we allow GDB commands while the target is running. */
+ int waiting_for_stop_reply;
+
+ /* True if the stub reports support for non-stop mode. */
+ int non_stop_aware;
+
+ /* True if the stub reports support for vCont;t. */
+ int support_vCont_t;
+
+ /* True if the stub reports support for conditional tracepoints. */
+ int cond_tracepoints;
+
+ /* True if the stub reports support for fast tracepoints. */
+ int fast_tracepoints;
+
+ /* True if the stub can continue running a trace while GDB is
+ disconnected. */
+ int disconnected_tracing;
+
+ /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
+ responded to that. */
+ int ctrlc_pending_p;
};
+/* Private data that we'll store in (struct thread_info)->private. */
+struct private_thread_info
+{
+ char *extra;
+ int core;
+};
+
+static void
+free_private_thread_info (struct private_thread_info *info)
+{
+ xfree (info->extra);
+ xfree (info);
+}
+
+/* Returns true if the multi-process extensions are in effect. */
+static int
+remote_multi_process_p (struct remote_state *rs)
+{
+ return rs->extended && rs->multi_process_aware;
+}
+
/* This data could be associated with a target, but we do not always
have access to the current target when we need it, so for now it is
static. This will be fine for as long as only one target is in use
long remote_packet_size;
};
+long sizeof_pkt = 2000;
+
+/* Utility: generate error from an incoming stub packet. */
+static void
+trace_error (char *buf)
+{
+ if (*buf++ != 'E')
+ return; /* not an error msg */
+ switch (*buf)
+ {
+ case '1': /* malformed packet error */
+ if (*++buf == '0') /* general case: */
+ error (_("remote.c: error in outgoing packet."));
+ else
+ error (_("remote.c: error in outgoing packet at field #%ld."),
+ strtol (buf, NULL, 16));
+ case '2':
+ error (_("trace API error 0x%s."), ++buf);
+ default:
+ error (_("Target returns error code '%s'."), buf);
+ }
+}
+
+/* Utility: wait for reply from stub, while accepting "O" packets. */
+static char *
+remote_get_noisy_reply (char **buf_p,
+ long *sizeof_buf)
+{
+ do /* Loop on reply from remote stub. */
+ {
+ char *buf;
+ QUIT; /* allow user to bail out with ^C */
+ getpkt (buf_p, sizeof_buf, 0);
+ buf = *buf_p;
+ if (buf[0] == 'E')
+ trace_error (buf);
+ else if (buf[0] == 'O' && buf[1] != 'K')
+ remote_console_output (buf + 1); /* 'O' message from stub */
+ else
+ return buf; /* here's the actual reply */
+ }
+ while (1);
+}
/* Handle for retreving the remote protocol data from gdbarch. */
static struct gdbarch_data *remote_gdbarch_data_handle;
this can go away. */
static int wait_forever_enabled_p = 1;
+/* Allow the user to specify what sequence to send to the remote
+ when he requests a program interruption: Although ^C is usually
+ what remote systems expect (this is the default, here), it is
+ sometimes preferable to send a break. On other systems such
+ as the Linux kernel, a break followed by g, which is Magic SysRq g
+ is required in order to interrupt the execution. */
+const char interrupt_sequence_control_c[] = "Ctrl-C";
+const char interrupt_sequence_break[] = "BREAK";
+const char interrupt_sequence_break_g[] = "BREAK-g";
+static const char *interrupt_sequence_modes[] =
+ {
+ interrupt_sequence_control_c,
+ interrupt_sequence_break,
+ interrupt_sequence_break_g,
+ NULL
+ };
+static const char *interrupt_sequence_mode = interrupt_sequence_control_c;
+
+static void
+show_interrupt_sequence (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ if (interrupt_sequence_mode == interrupt_sequence_control_c)
+ fprintf_filtered (file,
+ _("Send the ASCII ETX character (Ctrl-c) "
+ "to the remote target to interrupt the "
+ "execution of the program.\n"));
+ else if (interrupt_sequence_mode == interrupt_sequence_break)
+ fprintf_filtered (file,
+ _("send a break signal to the remote target "
+ "to interrupt the execution of the program.\n"));
+ else if (interrupt_sequence_mode == interrupt_sequence_break_g)
+ fprintf_filtered (file,
+ _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
+ "the remote target to interrupt the execution "
+ "of Linux kernel.\n"));
+ else
+ internal_error (__FILE__, __LINE__,
+ _("Invalid value for interrupt_sequence_mode: %s."),
+ interrupt_sequence_mode);
+}
-/* This variable chooses whether to send a ^C or a break when the user
- requests program interruption. Although ^C is usually what remote
- systems expect, and that is the default here, sometimes a break is
- preferable instead. */
+/* This boolean variable specifies whether interrupt_sequence is sent
+ to the remote target when gdb connects to it.
+ This is mostly needed when you debug the Linux kernel: The Linux kernel
+ expects BREAK g which is Magic SysRq g for connecting gdb. */
+static int interrupt_on_connect = 0;
+/* This variable is used to implement the "set/show remotebreak" commands.
+ Since these commands are now deprecated in favor of "set/show remote
+ interrupt-sequence", it no longer has any effect on the code. */
static int remote_break;
+static void
+set_remotebreak (char *args, int from_tty, struct cmd_list_element *c)
+{
+ if (remote_break)
+ interrupt_sequence_mode = interrupt_sequence_break;
+ else
+ interrupt_sequence_mode = interrupt_sequence_control_c;
+}
+
+static void
+show_remotebreak (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+}
+
/* Descriptor for I/O to remote machine. Initialize it to NULL so that
remote_open knows that we don't have a file open when the program
starts. */
set_remote_protocol_packet_cmd,
show_remote_protocol_packet_cmd,
&remote_set_cmdlist, &remote_show_cmdlist);
+ /* The command code copies the documentation strings. */
+ xfree (set_doc);
+ xfree (show_doc);
/* set/show remote NAME-packet {auto,on,off} -- legacy. */
if (legacy)
{
PACKET_qXfer_memory_map,
PACKET_qXfer_spu_read,
PACKET_qXfer_spu_write,
+ PACKET_qXfer_osdata,
+ PACKET_qXfer_threads,
+ PACKET_qGetTIBAddr,
PACKET_qGetTLSAddr,
PACKET_qSupported,
PACKET_QPassSignals,
PACKET_vAttach,
PACKET_vRun,
PACKET_QStartNoAckMode,
+ PACKET_vKill,
+ PACKET_qXfer_siginfo_read,
+ PACKET_qXfer_siginfo_write,
+ PACKET_qAttached,
+ PACKET_ConditionalTracepoints,
+ PACKET_FastTracepoints,
+ PACKET_bc,
+ PACKET_bs,
+ PACKET_TracepointSource,
PACKET_MAX
};
static struct async_signal_handler *sigint_remote_twice_token;
static struct async_signal_handler *sigint_remote_token;
+\f
+/* Asynchronous signal handle registered as event loop source for
+ when we have pending events ready to be passed to the core. */
+
+static struct async_event_handler *remote_async_inferior_event_token;
+
+/* Asynchronous signal handle registered as event loop source for when
+ the remote sent us a %Stop notification. The registered callback
+ will do a vStopped sequence to pull the rest of the events out of
+ the remote side into our event queue. */
+
+static struct async_event_handler *remote_async_get_pending_events_token;
\f
static ptid_t magic_null_ptid;
static ptid_t general_thread;
static ptid_t continue_thread;
+/* Find out if the stub attached to PID (and hence GDB should offer to
+ detach instead of killing it when bailing out). */
-/* Call this function as a result of
- 1) A halt indication (T packet) containing a thread id
- 2) A direct query of currthread
- 3) Successful execution of set thread
- */
+static int
+remote_query_attached (int pid)
+{
+ struct remote_state *rs = get_remote_state ();
+
+ if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE)
+ return 0;
+
+ if (remote_multi_process_p (rs))
+ sprintf (rs->buf, "qAttached:%x", pid);
+ else
+ sprintf (rs->buf, "qAttached");
+
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
+
+ switch (packet_ok (rs->buf,
+ &remote_protocol_packets[PACKET_qAttached]))
+ {
+ case PACKET_OK:
+ if (strcmp (rs->buf, "1") == 0)
+ return 1;
+ break;
+ case PACKET_ERROR:
+ warning (_("Remote failure reply: %s"), rs->buf);
+ break;
+ case PACKET_UNKNOWN:
+ break;
+ }
+
+ return 0;
+}
+
+/* Add PID to GDB's inferior table. Since we can be connected to a
+ remote system before before knowing about any inferior, mark the
+ target with execution when we find the first inferior. If ATTACHED
+ is 1, then we had just attached to this inferior. If it is 0, then
+ we just created this inferior. If it is -1, then try querying the
+ remote stub to find out if it had attached to the inferior or
+ not. */
+
+static struct inferior *
+remote_add_inferior (int pid, int attached)
+{
+ struct inferior *inf;
+
+ /* Check whether this process we're learning about is to be
+ considered attached, or if is to be considered to have been
+ spawned by the stub. */
+ if (attached == -1)
+ attached = remote_query_attached (pid);
+
+ if (gdbarch_has_global_solist (target_gdbarch))
+ {
+ /* If the target shares code across all inferiors, then every
+ attach adds a new inferior. */
+ inf = add_inferior (pid);
+
+ /* ... and every inferior is bound to the same program space.
+ However, each inferior may still have its own address
+ space. */
+ inf->aspace = maybe_new_address_space ();
+ inf->pspace = current_program_space;
+ }
+ else
+ {
+ /* In the traditional debugging scenario, there's a 1-1 match
+ between program/address spaces. We simply bind the inferior
+ to the program space's address space. */
+ inf = current_inferior ();
+ inferior_appeared (inf, pid);
+ }
+
+ inf->attach_flag = attached;
+
+ return inf;
+}
+
+/* Add thread PTID to GDB's thread list. Tag it as executing/running
+ according to RUNNING. */
static void
-record_currthread (ptid_t currthread)
+remote_add_thread (ptid_t ptid, int running)
{
- general_thread = currthread;
+ add_thread (ptid);
+
+ set_executing (ptid, running);
+ set_running (ptid, running);
+}
+
+/* Come here when we learn about a thread id from the remote target.
+ It may be the first time we hear about such thread, so take the
+ opportunity to add it to GDB's thread list. In case this is the
+ first time we're noticing its corresponding inferior, add it to
+ GDB's inferior list as well. */
+static void
+remote_notice_new_inferior (ptid_t currthread, int running)
+{
/* If this is a new thread, add it to GDB's thread list.
If we leave it up to WFI to do this, bad things will happen. */
+
+ if (in_thread_list (currthread) && is_exited (currthread))
+ {
+ /* We're seeing an event on a thread id we knew had exited.
+ This has to be a new thread reusing the old id. Add it. */
+ remote_add_thread (currthread, running);
+ return;
+ }
+
if (!in_thread_list (currthread))
{
- if (ptid_equal (pid_to_ptid (ptid_get_pid (currthread)), inferior_ptid))
+ struct inferior *inf = NULL;
+ int pid = ptid_get_pid (currthread);
+
+ if (ptid_is_pid (inferior_ptid)
+ && pid == ptid_get_pid (inferior_ptid))
{
/* inferior_ptid has no thread member yet. This can happen
with the vAttach -> remote_wait,"TAAthread:" path if the
stub doesn't support qC. This is the first stop reported
after an attach, so this is the main thread. Update the
ptid in the thread list. */
- struct thread_info *th = find_thread_pid (inferior_ptid);
- inferior_ptid = th->ptid = currthread;
+ if (in_thread_list (pid_to_ptid (pid)))
+ thread_change_ptid (inferior_ptid, currthread);
+ else
+ {
+ remote_add_thread (currthread, running);
+ inferior_ptid = currthread;
+ }
+ return;
}
- else if (ptid_equal (magic_null_ptid, inferior_ptid))
+
+ if (ptid_equal (magic_null_ptid, inferior_ptid))
{
/* inferior_ptid is not set yet. This can happen with the
vRun -> remote_wait,"TAAthread:" path if the stub
doesn't support qC. This is the first stop reported
after an attach, so this is the main thread. Update the
ptid in the thread list. */
- struct thread_info *th = find_thread_pid (inferior_ptid);
- inferior_ptid = th->ptid = currthread;
+ thread_change_ptid (inferior_ptid, currthread);
+ return;
}
- else
- /* This is really a new thread. Add it. */
- add_thread (currthread);
+
+ /* When connecting to a target remote, or to a target
+ extended-remote which already was debugging an inferior, we
+ may not know about it yet. Add it before adding its child
+ thread, so notifications are emitted in a sensible order. */
+ if (!in_inferior_list (ptid_get_pid (currthread)))
+ inf = remote_add_inferior (ptid_get_pid (currthread), -1);
+
+ /* This is really a new thread. Add it. */
+ remote_add_thread (currthread, running);
+
+ /* If we found a new inferior, let the common code do whatever
+ it needs to with it (e.g., read shared libraries, insert
+ breakpoints). */
+ if (inf != NULL)
+ notice_new_inferior (currthread, running, 0);
+ }
+}
+
+/* Return the private thread data, creating it if necessary. */
+
+struct private_thread_info *
+demand_private_info (ptid_t ptid)
+{
+ struct thread_info *info = find_thread_ptid (ptid);
+
+ gdb_assert (info);
+
+ if (!info->private)
+ {
+ info->private = xmalloc (sizeof (*(info->private)));
+ info->private_dtor = free_private_thread_info;
+ info->private->core = -1;
+ info->private->extra = 0;
}
+
+ return info->private;
+}
+
+/* Call this function as a result of
+ 1) A halt indication (T packet) containing a thread id
+ 2) A direct query of currthread
+ 3) Successful execution of set thread
+ */
+
+static void
+record_currthread (ptid_t currthread)
+{
+ general_thread = currthread;
}
static char *last_pass_packet;
else if (ptid_equal (ptid, minus_one_ptid))
xsnprintf (buf, endbuf - buf, "-1");
else
- {
- int tid = ptid_get_tid (ptid);
- if (tid < 0)
- xsnprintf (buf, endbuf - buf, "-%x", -tid);
- else
- xsnprintf (buf, endbuf - buf, "%x", tid);
- }
+ write_ptid (buf, endbuf, ptid);
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
if (gen)
set_thread (ptid, 0);
}
+/* Change the remote current process. Which thread within the process
+ ends up selected isn't important, as long as it is the same process
+ as what INFERIOR_PTID points to.
+
+ This comes from that fact that there is no explicit notion of
+ "selected process" in the protocol. The selected process for
+ general operations is the process the selected general thread
+ belongs to. */
+
+static void
+set_general_process (void)
+{
+ struct remote_state *rs = get_remote_state ();
+
+ /* If the remote can't handle multiple processes, don't bother. */
+ if (!remote_multi_process_p (rs))
+ return;
+
+ /* We only need to change the remote current thread if it's pointing
+ at some other process. */
+ if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid))
+ set_general_thread (inferior_ptid);
+}
+
\f
/* Return nonzero if the thread PTID is still alive on the remote
system. */
static int
-remote_thread_alive (ptid_t ptid)
+remote_thread_alive (struct target_ops *ops, ptid_t ptid)
{
struct remote_state *rs = get_remote_state ();
- int tid = ptid_get_tid (ptid);
+ char *p, *endp;
if (ptid_equal (ptid, magic_null_ptid))
/* The main thread is always alive. */
multi-threading. */
return 1;
- if (tid < 0)
- xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid);
- else
- xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid);
+ p = rs->buf;
+ endp = rs->buf + get_remote_packet_size ();
+
+ *p++ = 'T';
+ write_ptid (p, endp, ptid);
+
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
return (rs->buf[0] == 'O' && rs->buf[1] == 'K');
static int remote_newthread_step (threadref *ref, void *context);
+
+/* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
+ buffer we're allowed to write to. Returns
+ BUF+CHARACTERS_WRITTEN. */
+
+static char *
+write_ptid (char *buf, const char *endbuf, ptid_t ptid)
+{
+ int pid, tid;
+ struct remote_state *rs = get_remote_state ();
+
+ if (remote_multi_process_p (rs))
+ {
+ pid = ptid_get_pid (ptid);
+ if (pid < 0)
+ buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid);
+ else
+ buf += xsnprintf (buf, endbuf - buf, "p%x.", pid);
+ }
+ tid = ptid_get_tid (ptid);
+ if (tid < 0)
+ buf += xsnprintf (buf, endbuf - buf, "-%x", -tid);
+ else
+ buf += xsnprintf (buf, endbuf - buf, "%x", tid);
+
+ return buf;
+}
+
+/* Extract a PTID from BUF. If non-null, OBUF is set to the to one
+ passed the last parsed char. Returns null_ptid on error. */
+
+static ptid_t
+read_ptid (char *buf, char **obuf)
+{
+ char *p = buf;
+ char *pp;
+ ULONGEST pid = 0, tid = 0;
+
+ if (*p == 'p')
+ {
+ /* Multi-process ptid. */
+ pp = unpack_varlen_hex (p + 1, &pid);
+ if (*pp != '.')
+ error (_("invalid remote ptid: %s\n"), p);
+
+ p = pp;
+ pp = unpack_varlen_hex (p + 1, &tid);
+ if (obuf)
+ *obuf = pp;
+ return ptid_build (pid, 0, tid);
+ }
+
+ /* No multi-process. Just a tid. */
+ pp = unpack_varlen_hex (p, &tid);
+
+ /* Since the stub is not sending a process id, then default to
+ what's in inferior_ptid, unless it's null at this point. If so,
+ then since there's no way to know the pid of the reported
+ threads, use the magic number. */
+ if (ptid_equal (inferior_ptid, null_ptid))
+ pid = ptid_get_pid (magic_null_ptid);
+ else
+ pid = ptid_get_pid (inferior_ptid);
+
+ if (obuf)
+ *obuf = pp;
+ return ptid_build (pid, 0, tid);
+}
+
/* Encode 64 bits in 16 chars of hex. */
static const char hexchars[] = "0123456789abcdef";
pack_threadinfo_request (rs->buf, fieldset, threadid);
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
+
+ if (rs->buf[0] == '\0')
+ return 0;
+
result = remote_unpack_thread_info_response (rs->buf + 2,
threadid, info);
return result;
remote_current_thread (ptid_t oldpid)
{
struct remote_state *rs = get_remote_state ();
- char *p = rs->buf;
- int tid;
- int pid;
putpkt ("qC");
getpkt (&rs->buf, &rs->buf_size, 0);
if (rs->buf[0] == 'Q' && rs->buf[1] == 'C')
- {
- /* Use strtoul here, so we'll correctly parse values whose
- highest bit is set. The protocol carries them as a simple
- series of hex digits; in the absence of a sign, strtol will
- see such values as positive numbers out of range for signed
- 'long', and return LONG_MAX to indicate an overflow. */
- tid = strtoul (&rs->buf[2], NULL, 16);
- pid = ptid_get_pid (oldpid);
- return ptid_build (pid, 0, tid);
- }
+ return read_ptid (&rs->buf[2], NULL);
else
return oldpid;
}
CRAZY_MAX_THREADS);
}
+#if defined(HAVE_LIBEXPAT)
+
+typedef struct thread_item
+{
+ ptid_t ptid;
+ char *extra;
+ int core;
+} thread_item_t;
+DEF_VEC_O(thread_item_t);
+
+struct threads_parsing_context
+{
+ VEC (thread_item_t) *items;
+};
+
+static void
+start_thread (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, VEC(gdb_xml_value_s) *attributes)
+{
+ struct threads_parsing_context *data = user_data;
+
+ struct thread_item item;
+ char *id;
+
+ id = VEC_index (gdb_xml_value_s, attributes, 0)->value;
+ item.ptid = read_ptid (id, NULL);
+
+ if (VEC_length (gdb_xml_value_s, attributes) > 1)
+ item.core = *(ULONGEST *) VEC_index (gdb_xml_value_s, attributes, 1)->value;
+ else
+ item.core = -1;
+
+ item.extra = 0;
+
+ VEC_safe_push (thread_item_t, data->items, &item);
+}
+
+static void
+end_thread (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, const char *body_text)
+{
+ struct threads_parsing_context *data = user_data;
+
+ if (body_text && *body_text)
+ VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text);
+}
+
+const struct gdb_xml_attribute thread_attributes[] = {
+ { "id", GDB_XML_AF_NONE, NULL, NULL },
+ { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_element thread_children[] = {
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_element threads_children[] = {
+ { "thread", thread_attributes, thread_children,
+ GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
+ start_thread, end_thread },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_element threads_elements[] = {
+ { "threads", NULL, threads_children,
+ GDB_XML_EF_NONE, NULL, NULL },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+#endif
+
/*
* Find all threads for info threads command.
* Uses new thread protocol contributed by Cisco.
*/
static void
-remote_threads_info (void)
+remote_threads_info (struct target_ops *ops)
{
struct remote_state *rs = get_remote_state ();
char *bufp;
- int tid;
- int pid;
ptid_t new_thread;
if (remote_desc == 0) /* paranoia */
error (_("Command can only be used when connected to the remote target."));
- if (use_threadinfo_query)
+#if defined(HAVE_LIBEXPAT)
+ if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE)
{
- putpkt ("qfThreadInfo");
- getpkt (&rs->buf, &rs->buf_size, 0);
- bufp = rs->buf;
- if (bufp[0] != '\0') /* q packet recognized */
+ char *xml = target_read_stralloc (¤t_target,
+ TARGET_OBJECT_THREADS, NULL);
+
+ struct cleanup *back_to = make_cleanup (xfree, xml);
+ if (xml && *xml)
+ {
+ struct gdb_xml_parser *parser;
+ struct threads_parsing_context context;
+ struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
+
+ context.items = 0;
+ parser = gdb_xml_create_parser_and_cleanup (_("threads"),
+ threads_elements,
+ &context);
+
+ gdb_xml_use_dtd (parser, "threads.dtd");
+
+ if (gdb_xml_parse (parser, xml) == 0)
+ {
+ int i;
+ struct thread_item *item;
+
+ for (i = 0; VEC_iterate (thread_item_t, context.items, i, item); ++i)
+ {
+ if (!ptid_equal (item->ptid, null_ptid))
+ {
+ struct private_thread_info *info;
+ /* In non-stop mode, we assume new found threads
+ are running until proven otherwise with a
+ stop reply. In all-stop, we can only get
+ here if all threads are stopped. */
+ int running = non_stop ? 1 : 0;
+
+ remote_notice_new_inferior (item->ptid, running);
+
+ info = demand_private_info (item->ptid);
+ info->core = item->core;
+ info->extra = item->extra;
+ item->extra = 0;
+ }
+ xfree (item->extra);
+ }
+ }
+
+ VEC_free (thread_item_t, context.items);
+ }
+
+ do_cleanups (back_to);
+ return;
+ }
+#endif
+
+ if (use_threadinfo_query)
+ {
+ putpkt ("qfThreadInfo");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ bufp = rs->buf;
+ if (bufp[0] != '\0') /* q packet recognized */
{
while (*bufp++ == 'm') /* reply contains one or more TID */
{
do
{
- /* Use strtoul here, so we'll correctly parse values
- whose highest bit is set. The protocol carries
- them as a simple series of hex digits; in the
- absence of a sign, strtol will see such values as
- positive numbers out of range for signed 'long',
- and return LONG_MAX to indicate an overflow. */
- tid = strtoul (bufp, &bufp, 16);
- pid = ptid_get_pid (inferior_ptid);
- new_thread = ptid_build (pid, 0, tid);
- if (tid != 0 && !in_thread_list (new_thread))
- add_thread (new_thread);
+ new_thread = read_ptid (bufp, &bufp);
+ if (!ptid_equal (new_thread, null_ptid))
+ {
+ /* In non-stop mode, we assume new found threads
+ are running until proven otherwise with a
+ stop reply. In all-stop, we can only get
+ here if all threads are stopped. */
+ int running = non_stop ? 1 : 0;
+
+ remote_notice_new_inferior (new_thread, running);
+ }
}
while (*bufp++ == ','); /* comma-separated list */
putpkt ("qsThreadInfo");
}
}
+ /* Only qfThreadInfo is supported in non-stop mode. */
+ if (non_stop)
+ return;
+
/* Else fall back to old method based on jmetzler protocol. */
use_threadinfo_query = 0;
remote_find_new_threads ();
server doesn't know about it. */
return NULL;
+ if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE)
+ {
+ struct thread_info *info = find_thread_ptid (tp->ptid);
+ if (info && info->private)
+ return info->private->extra;
+ else
+ return NULL;
+ }
+
if (use_threadextra_query)
{
- xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%lx",
- ptid_get_tid (tp->ptid));
+ char *b = rs->buf;
+ char *endb = rs->buf + get_remote_packet_size ();
+
+ xsnprintf (b, endb - b, "qThreadExtraInfo,");
+ b += strlen (b);
+ write_ptid (b, endb, tp->ptid);
+
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
if (rs->buf[0] != 0)
}
\f
+/* Implement the to_get_ada_task_ptid function for the remote targets. */
+
+static ptid_t
+remote_get_ada_task_ptid (long lwp, long thread)
+{
+ return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
+}
+\f
+
/* Restart the remote side; this is an extended protocol operation. */
static void
static void
remote_close (int quitting)
{
- if (remote_desc)
- serial_close (remote_desc);
+ if (remote_desc == NULL)
+ return; /* already closed */
+
+ /* Make sure we leave stdin registered in the event loop, and we
+ don't leave the async SIGINT signal handler installed. */
+ remote_terminal_ours ();
+
+ serial_close (remote_desc);
remote_desc = NULL;
+
+ /* We don't have a connection to the remote stub anymore. Get rid
+ of all the inferiors and their threads we were controlling. */
+ discard_all_inferiors ();
+
+ /* We're no longer interested in any of these events. */
+ discard_pending_stop_replies (-1);
+
+ if (remote_async_inferior_event_token)
+ delete_async_event_handler (&remote_async_inferior_event_token);
+ if (remote_async_get_pending_events_token)
+ delete_async_event_handler (&remote_async_get_pending_events_token);
}
/* Query the remote side for the text, data and bss offsets. */
objfile_relocate (symfile_objfile, offs);
}
+/* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
+ threads we know are stopped already. This is used during the
+ initial remote connection in non-stop mode --- threads that are
+ reported as already being stopped are left stopped. */
+
+static int
+set_stop_requested_callback (struct thread_info *thread, void *data)
+{
+ /* If we have a stop reply for this thread, it must be stopped. */
+ if (peek_stop_reply (thread->ptid))
+ set_stop_requested (thread->ptid, 1);
+
+ return 0;
+}
+
/* Stub for catch_exception. */
struct start_remote_args
int extended_p;
};
+/* Send interrupt_sequence to remote target. */
+static void
+send_interrupt_sequence ()
+{
+ if (interrupt_sequence_mode == interrupt_sequence_control_c)
+ serial_write (remote_desc, "\x03", 1);
+ else if (interrupt_sequence_mode == interrupt_sequence_break)
+ serial_send_break (remote_desc);
+ else if (interrupt_sequence_mode == interrupt_sequence_break_g)
+ {
+ serial_send_break (remote_desc);
+ serial_write (remote_desc, "g", 1);
+ }
+ else
+ internal_error (__FILE__, __LINE__,
+ _("Invalid value for interrupt_sequence_mode: %s."),
+ interrupt_sequence_mode);
+}
+
static void
remote_start_remote (struct ui_out *uiout, void *opaque)
{
- struct remote_state *rs = get_remote_state ();
struct start_remote_args *args = opaque;
+ struct remote_state *rs = get_remote_state ();
+ struct packet_config *noack_config;
char *wait_status = NULL;
immediate_quit++; /* Allow user to interrupt it. */
+ /* Ack any packet which the remote side has already sent. */
+ serial_write (remote_desc, "+", 1);
+
+ if (interrupt_on_connect)
+ send_interrupt_sequence ();
+
+ /* The first packet we send to the target is the optional "supported
+ packets" request. If the target can answer this, it will tell us
+ which later probes to skip. */
+ remote_query_supported ();
+
+ /* Next, we possibly activate noack mode.
+
+ If the QStartNoAckMode packet configuration is set to AUTO,
+ enable noack mode if the stub reported a wish for it with
+ qSupported.
+
+ If set to TRUE, then enable noack mode even if the stub didn't
+ report it in qSupported. If the stub doesn't reply OK, the
+ session ends with an error.
+
+ If FALSE, then don't activate noack mode, regardless of what the
+ stub claimed should be the default with qSupported. */
+
+ noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode];
+
+ if (noack_config->detect == AUTO_BOOLEAN_TRUE
+ || (noack_config->detect == AUTO_BOOLEAN_AUTO
+ && noack_config->support == PACKET_ENABLE))
+ {
+ putpkt ("QStartNoAckMode");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (packet_ok (rs->buf, noack_config) == PACKET_OK)
+ rs->noack_mode = 1;
+ }
+
+ if (args->extended_p)
+ {
+ /* Tell the remote that we are using the extended protocol. */
+ putpkt ("!");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ }
+
+ /* Next, if the target can specify a description, read it. We do
+ this before anything involving memory or registers. */
+ target_find_description ();
+
+ /* Next, now that we know something about the target, update the
+ address spaces in the program spaces. */
+ update_address_spaces ();
+
+ /* On OSs where the list of libraries is global to all
+ processes, we fetch them early. */
+ if (gdbarch_has_global_solist (target_gdbarch))
+ solib_add (NULL, args->from_tty, args->target, auto_solib_add);
+
+ if (non_stop)
+ {
+ if (!rs->non_stop_aware)
+ error (_("Non-stop mode requested, but remote does not support non-stop"));
+
+ putpkt ("QNonStop:1");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+
+ if (strcmp (rs->buf, "OK") != 0)
+ error ("Remote refused setting non-stop mode with: %s", rs->buf);
+
+ /* Find about threads and processes the stub is already
+ controlling. We default to adding them in the running state.
+ The '?' query below will then tell us about which threads are
+ stopped. */
+ remote_threads_info (args->target);
+ }
+ else if (rs->non_stop_aware)
+ {
+ /* Don't assume that the stub can operate in all-stop mode.
+ Request it explicitely. */
+ putpkt ("QNonStop:0");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+
+ if (strcmp (rs->buf, "OK") != 0)
+ error ("Remote refused setting all-stop mode with: %s", rs->buf);
+ }
+
/* Check whether the target is running now. */
putpkt ("?");
getpkt (&rs->buf, &rs->buf_size, 0);
- if (rs->buf[0] == 'W' || rs->buf[0] == 'X')
+ if (!non_stop)
{
- if (args->extended_p)
+ if (rs->buf[0] == 'W' || rs->buf[0] == 'X')
{
+ if (!args->extended_p)
+ error (_("The target is not running (try extended-remote?)"));
+
/* We're connected, but not running. Drop out before we
call start_remote. */
- target_mark_exited (args->target);
return;
}
else
- error (_("The target is not running (try extended-remote?)"));
+ {
+ /* Save the reply for later. */
+ wait_status = alloca (strlen (rs->buf) + 1);
+ strcpy (wait_status, rs->buf);
+ }
+
+ /* Let the stub know that we want it to return the thread. */
+ set_continue_thread (minus_one_ptid);
+
+ /* Without this, some commands which require an active target
+ (such as kill) won't work. This variable serves (at least)
+ double duty as both the pid of the target process (if it has
+ such), and as a flag indicating that a target is active.
+ These functions should be split out into seperate variables,
+ especially since GDB will someday have a notion of debugging
+ several processes. */
+ inferior_ptid = magic_null_ptid;
+
+ /* Now, if we have thread information, update inferior_ptid. */
+ inferior_ptid = remote_current_thread (inferior_ptid);
+
+ remote_add_inferior (ptid_get_pid (inferior_ptid), -1);
+
+ /* Always add the main thread. */
+ add_thread_silent (inferior_ptid);
+
+ get_offsets (); /* Get text, data & bss offsets. */
+
+ /* If we could not find a description using qXfer, and we know
+ how to do it some other way, try again. This is not
+ supported for non-stop; it could be, but it is tricky if
+ there are no stopped threads when we connect. */
+ if (remote_read_description_p (args->target)
+ && gdbarch_target_desc (target_gdbarch) == NULL)
+ {
+ target_clear_description ();
+ target_find_description ();
+ }
+
+ /* Use the previously fetched status. */
+ gdb_assert (wait_status != NULL);
+ strcpy (rs->buf, wait_status);
+ rs->cached_wait_status = 1;
+
+ immediate_quit--;
+ start_remote (args->from_tty); /* Initialize gdb process mechanisms. */
}
else
{
- if (args->extended_p)
- target_mark_running (args->target);
+ /* Clear WFI global state. Do this before finding about new
+ threads and inferiors, and setting the current inferior.
+ Otherwise we would clear the proceed status of the current
+ inferior when we want its stop_soon state to be preserved
+ (see notice_new_inferior). */
+ init_wait_for_inferior ();
+
+ /* In non-stop, we will either get an "OK", meaning that there
+ are no stopped threads at this time; or, a regular stop
+ reply. In the latter case, there may be more than one thread
+ stopped --- we pull them all out using the vStopped
+ mechanism. */
+ if (strcmp (rs->buf, "OK") != 0)
+ {
+ struct stop_reply *stop_reply;
+ struct cleanup *old_chain;
+
+ stop_reply = stop_reply_xmalloc ();
+ old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
+
+ remote_parse_stop_reply (rs->buf, stop_reply);
+ discard_cleanups (old_chain);
+
+ /* get_pending_stop_replies acks this one, and gets the rest
+ out. */
+ pending_stop_reply = stop_reply;
+ remote_get_pending_stop_replies ();
+
+ /* Make sure that threads that were stopped remain
+ stopped. */
+ iterate_over_threads (set_stop_requested_callback, NULL);
+ }
- /* Save the reply for later. */
- wait_status = alloca (strlen (rs->buf) + 1);
- strcpy (wait_status, rs->buf);
+ if (target_can_async_p ())
+ target_async (inferior_event_handler, 0);
+
+ if (thread_count () == 0)
+ {
+ if (!args->extended_p)
+ error (_("The target is not running (try extended-remote?)"));
+
+ /* We're connected, but not running. Drop out before we
+ call start_remote. */
+ return;
+ }
+
+ /* Let the stub know that we want it to return the thread. */
+
+ /* Force the stub to choose a thread. */
+ set_general_thread (null_ptid);
+
+ /* Query it. */
+ inferior_ptid = remote_current_thread (minus_one_ptid);
+ if (ptid_equal (inferior_ptid, minus_one_ptid))
+ error (_("remote didn't report the current thread in non-stop mode"));
+
+ get_offsets (); /* Get text, data & bss offsets. */
+
+ /* In non-stop mode, any cached wait status will be stored in
+ the stop reply queue. */
+ gdb_assert (wait_status == NULL);
}
- /* Start afresh. */
- init_thread_list ();
+ /* If we connected to a live target, do some additional setup. */
+ if (target_has_execution)
+ {
+ if (exec_bfd) /* No use without an exec file. */
+ remote_check_symbols (symfile_objfile);
+ }
- /* Let the stub know that we want it to return the thread. */
- set_continue_thread (minus_one_ptid);
+ /* Possibly the target has been engaged in a trace run started
+ previously; find out where things are at. */
+ if (remote_get_trace_status (current_trace_status ()) != -1)
+ {
+ struct uploaded_tp *uploaded_tps = NULL;
+ struct uploaded_tsv *uploaded_tsvs = NULL;
- /* Without this, some commands which require an active target
- (such as kill) won't work. This variable serves (at least)
- double duty as both the pid of the target process (if it has
- such), and as a flag indicating that a target is active.
- These functions should be split out into seperate variables,
- especially since GDB will someday have a notion of debugging
- several processes. */
- inferior_ptid = magic_null_ptid;
+ if (current_trace_status ()->running)
+ printf_filtered (_("Trace is already running on the target.\n"));
- /* Now, if we have thread information, update inferior_ptid. */
- inferior_ptid = remote_current_thread (inferior_ptid);
+ /* Get trace state variables first, they may be checked when
+ parsing uploaded commands. */
- /* Always add the main thread. */
- add_thread_silent (inferior_ptid);
+ remote_upload_trace_state_variables (&uploaded_tsvs);
+
+ merge_uploaded_trace_state_variables (&uploaded_tsvs);
- get_offsets (); /* Get text, data & bss offsets. */
+ remote_upload_tracepoints (&uploaded_tps);
- /* Use the previously fetched status. */
- gdb_assert (wait_status != NULL);
- strcpy (rs->buf, wait_status);
- rs->cached_wait_status = 1;
+ merge_uploaded_tracepoints (&uploaded_tps);
+ }
- immediate_quit--;
- start_remote (args->from_tty); /* Initialize gdb process mechanisms. */
+ /* If breakpoints are global, insert them now. */
+ if (gdbarch_has_global_breakpoints (target_gdbarch)
+ && breakpoints_always_inserted_mode ())
+ insert_breakpoints ();
}
/* Open a connection to a remote debugger.
if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE)
return;
+ /* Make sure the remote is pointing at the right process. */
+ set_general_process ();
+
/* Allocate a message buffer. We can't reuse the input buffer in RS,
because we need both at the same time. */
msg = alloca (get_remote_packet_size ());
xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]);
else
{
+ int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym);
/* If this is a function address, return the start of code
¤t_target);
xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s",
- paddr_nz (sym_addr), &reply[8]);
+ phex_nz (sym_addr, addr_size), &reply[8]);
}
putpkt (msg);
rs->explicit_packet_size = packet_size;
}
+static void
+remote_multi_process_feature (const struct protocol_feature *feature,
+ enum packet_support support, const char *value)
+{
+ struct remote_state *rs = get_remote_state ();
+ rs->multi_process_aware = (support == PACKET_ENABLE);
+}
+
+static void
+remote_non_stop_feature (const struct protocol_feature *feature,
+ enum packet_support support, const char *value)
+{
+ struct remote_state *rs = get_remote_state ();
+ rs->non_stop_aware = (support == PACKET_ENABLE);
+}
+
+static void
+remote_cond_tracepoint_feature (const struct protocol_feature *feature,
+ enum packet_support support,
+ const char *value)
+{
+ struct remote_state *rs = get_remote_state ();
+ rs->cond_tracepoints = (support == PACKET_ENABLE);
+}
+
+static void
+remote_fast_tracepoint_feature (const struct protocol_feature *feature,
+ enum packet_support support,
+ const char *value)
+{
+ struct remote_state *rs = get_remote_state ();
+ rs->fast_tracepoints = (support == PACKET_ENABLE);
+}
+
+static void
+remote_disconnected_tracing_feature (const struct protocol_feature *feature,
+ enum packet_support support,
+ const char *value)
+{
+ struct remote_state *rs = get_remote_state ();
+ rs->disconnected_tracing = (support == PACKET_ENABLE);
+}
+
static struct protocol_feature remote_protocol_features[] = {
{ "PacketSize", PACKET_DISABLE, remote_packet_size, -1 },
{ "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet,
PACKET_qXfer_spu_read },
{ "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet,
PACKET_qXfer_spu_write },
+ { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet,
+ PACKET_qXfer_osdata },
+ { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet,
+ PACKET_qXfer_threads },
{ "QPassSignals", PACKET_DISABLE, remote_supported_packet,
PACKET_QPassSignals },
{ "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet,
PACKET_QStartNoAckMode },
+ { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 },
+ { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 },
+ { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet,
+ PACKET_qXfer_siginfo_read },
+ { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet,
+ PACKET_qXfer_siginfo_write },
+ { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature,
+ PACKET_ConditionalTracepoints },
+ { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature,
+ PACKET_FastTracepoints },
+ { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature,
+ -1 },
+ { "ReverseContinue", PACKET_DISABLE, remote_supported_packet,
+ PACKET_bc },
+ { "ReverseStep", PACKET_DISABLE, remote_supported_packet,
+ PACKET_bs },
+ { "TracepointSource", PACKET_DISABLE, remote_supported_packet,
+ PACKET_TracepointSource },
};
+static char *remote_support_xml;
+
+/* Register string appended to "xmlRegisters=" in qSupported query. */
+
+void
+register_remote_support_xml (const char *xml ATTRIBUTE_UNUSED)
+{
+#if defined(HAVE_LIBEXPAT)
+ if (remote_support_xml == NULL)
+ remote_support_xml = concat ("xmlRegisters=", xml, NULL);
+ else
+ {
+ char *copy = xstrdup (remote_support_xml + 13);
+ char *p = strtok (copy, ",");
+
+ do
+ {
+ if (strcmp (p, xml) == 0)
+ {
+ /* already there */
+ xfree (copy);
+ return;
+ }
+ }
+ while ((p = strtok (NULL, ",")) != NULL);
+ xfree (copy);
+
+ p = concat (remote_support_xml, ",", xml, NULL);
+ xfree (remote_support_xml);
+ remote_support_xml = p;
+ }
+#endif
+}
+
+static char *
+remote_query_supported_append (char *msg, const char *append)
+{
+ if (msg)
+ {
+ char *p = concat (msg, ";", append, NULL);
+ xfree (msg);
+ return p;
+ }
+ else
+ return xstrdup (append);
+}
+
static void
remote_query_supported (void)
{
rs->buf[0] = 0;
if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE)
{
- putpkt ("qSupported");
+ char *q = NULL;
+ const char *qsupported = gdbarch_qsupported (target_gdbarch);
+
+ if (rs->extended)
+ q = remote_query_supported_append (q, "multiprocess+");
+
+ if (qsupported)
+ q = remote_query_supported_append (q, qsupported);
+
+ if (remote_support_xml)
+ q = remote_query_supported_append (q, remote_support_xml);
+
+ if (q)
+ {
+ char *p = concat ("qSupported:", q, NULL);
+ xfree (q);
+ putpkt (p);
+ xfree (p);
+ }
+ else
+ putpkt ("qSupported");
+
getpkt (&rs->buf, &rs->buf_size, 0);
/* If an error occured, warn, but do not return - just reset the
remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended_p)
{
struct remote_state *rs = get_remote_state ();
- struct packet_config *noack_config;
if (name == 0)
error (_("To open a remote debug connection, you need to specify what\n"
But if we're connected to a target system with no running process,
then we will still be connected when it returns. Ask this question
first, before target_preopen has a chance to kill anything. */
- if (remote_desc != NULL && !target_has_execution)
+ if (remote_desc != NULL && !have_inferiors ())
{
if (!from_tty
|| query (_("Already connected to a remote target. Disconnect? ")))
process, we may still be connected. If we are starting "target
remote" now, the extended-remote target will not have been
removed by unpush_target. */
- if (remote_desc != NULL && !target_has_execution)
+ if (remote_desc != NULL && !have_inferiors ())
pop_target ();
/* Make sure we send the passed signals list the next time we resume. */
}
push_target (target); /* Switch to using remote target now. */
- /* Assume that the target is running, unless we learn otherwise. */
- target_mark_running (target);
+ /* Register extra event sources in the event loop. */
+ remote_async_inferior_event_token
+ = create_async_event_handler (remote_async_inferior_event_handler,
+ NULL);
+ remote_async_get_pending_events_token
+ = create_async_event_handler (remote_async_get_pending_events_handler,
+ NULL);
/* Reset the target state; these things will be queried either by
remote_query_supported or as they are needed. */
init_all_packet_configs ();
+ rs->cached_wait_status = 0;
rs->explicit_packet_size = 0;
rs->noack_mode = 0;
+ rs->multi_process_aware = 0;
+ rs->extended = extended_p;
+ rs->non_stop_aware = 0;
+ rs->waiting_for_stop_reply = 0;
+ rs->ctrlc_pending_p = 0;
general_thread = not_sent_ptid;
continue_thread = not_sent_ptid;
use_threadinfo_query = 1;
use_threadextra_query = 1;
- /* Ack any packet which the remote side has already sent. */
- serial_write (remote_desc, "+", 1);
-
- /* The first packet we send to the target is the optional "supported
- packets" request. If the target can answer this, it will tell us
- which later probes to skip. */
- remote_query_supported ();
+ if (target_async_permitted)
+ {
+ /* With this target we start out by owning the terminal. */
+ remote_async_terminal_ours_p = 1;
- /* Next, we possibly activate noack mode.
+ /* FIXME: cagney/1999-09-23: During the initial connection it is
+ assumed that the target is already ready and able to respond to
+ requests. Unfortunately remote_start_remote() eventually calls
+ wait_for_inferior() with no timeout. wait_forever_enabled_p gets
+ around this. Eventually a mechanism that allows
+ wait_for_inferior() to expect/get timeouts will be
+ implemented. */
+ wait_forever_enabled_p = 0;
+ }
- If the QStartNoAckMode packet configuration is set to AUTO,
- enable noack mode if the stub reported a wish for it with
- qSupported.
+ /* First delete any symbols previously loaded from shared libraries. */
+ no_shared_libraries (NULL, 0);
- If set to TRUE, then enable noack mode even if the stub didn't
- report it in qSupported. If the stub doesn't reply OK, the
- session ends with an error.
-
- If FALSE, then don't activate noack mode, regardless of what the
- stub claimed should be the default with qSupported. */
-
- noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode];
-
- if (noack_config->detect == AUTO_BOOLEAN_TRUE
- || (noack_config->detect == AUTO_BOOLEAN_AUTO
- && noack_config->support == PACKET_ENABLE))
- {
- putpkt ("QStartNoAckMode");
- getpkt (&rs->buf, &rs->buf_size, 0);
- if (packet_ok (rs->buf, noack_config) == PACKET_OK)
- rs->noack_mode = 1;
- }
-
- /* Next, if the target can specify a description, read it. We do
- this before anything involving memory or registers. */
- target_find_description ();
-
- if (target_async_permitted)
- {
- /* With this target we start out by owning the terminal. */
- remote_async_terminal_ours_p = 1;
-
- /* FIXME: cagney/1999-09-23: During the initial connection it is
- assumed that the target is already ready and able to respond to
- requests. Unfortunately remote_start_remote() eventually calls
- wait_for_inferior() with no timeout. wait_forever_enabled_p gets
- around this. Eventually a mechanism that allows
- wait_for_inferior() to expect/get timeouts will be
- implemented. */
- wait_forever_enabled_p = 0;
- }
-
- /* First delete any symbols previously loaded from shared libraries. */
- no_shared_libraries (NULL, 0);
+ /* Start afresh. */
+ init_thread_list ();
/* Start the remote connection. If error() or QUIT, discard this
target (we'd otherwise be in an inconsistent state) and then
ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL);
if (ex.reason < 0)
{
- pop_target ();
+ /* Pop the partially set up target - unless something else did
+ already before throwing the exception. */
+ if (remote_desc != NULL)
+ pop_target ();
if (target_async_permitted)
wait_forever_enabled_p = 1;
throw_exception (ex);
if (target_async_permitted)
wait_forever_enabled_p = 1;
-
- if (extended_p)
- {
- /* Tell the remote that we are using the extended protocol. */
- putpkt ("!");
- getpkt (&rs->buf, &rs->buf_size, 0);
- }
-
- /* If we connected to a live target, do some additional setup. */
- if (target_has_execution)
- {
- if (exec_bfd) /* No use without an exec file. */
- remote_check_symbols (symfile_objfile);
- }
}
/* This takes a program previously attached to and detaches it. After
static void
remote_detach_1 (char *args, int from_tty, int extended)
{
+ int pid = ptid_get_pid (inferior_ptid);
struct remote_state *rs = get_remote_state ();
if (args)
error (_("No process to detach from."));
/* Tell the remote target to detach. */
- strcpy (rs->buf, "D");
+ if (remote_multi_process_p (rs))
+ sprintf (rs->buf, "D;%x", pid);
+ else
+ strcpy (rs->buf, "D");
+
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
- if (rs->buf[0] == 'E')
+ if (rs->buf[0] == 'O' && rs->buf[1] == 'K')
+ ;
+ else if (rs->buf[0] == '\0')
+ error (_("Remote doesn't know how to detach"));
+ else
error (_("Can't detach process."));
- /* Unregister the file descriptor from the event loop. */
- if (target_is_async_p ())
- serial_async (remote_desc, NULL, 0);
-
- target_mourn_inferior ();
if (from_tty)
{
- if (extended)
- puts_filtered ("Detached from remote process.\n");
+ if (remote_multi_process_p (rs))
+ printf_filtered (_("Detached from remote %s.\n"),
+ target_pid_to_str (pid_to_ptid (pid)));
else
- puts_filtered ("Ending remote debugging.\n");
+ {
+ if (extended)
+ puts_filtered (_("Detached from remote process.\n"));
+ else
+ puts_filtered (_("Ending remote debugging.\n"));
+ }
}
+
+ discard_pending_stop_replies (pid);
+ target_mourn_inferior ();
}
static void
-remote_detach (char *args, int from_tty)
+remote_detach (struct target_ops *ops, char *args, int from_tty)
{
remote_detach_1 (args, from_tty, 0);
}
static void
-extended_remote_detach (char *args, int from_tty)
+extended_remote_detach (struct target_ops *ops, char *args, int from_tty)
{
remote_detach_1 (args, from_tty, 1);
}
if (args)
error (_("Argument given to \"disconnect\" when remotely debugging."));
- /* Unregister the file descriptor from the event loop. */
- if (target_is_async_p ())
- serial_async (remote_desc, NULL, 0);
-
/* Make sure we unpush even the extended remote targets; mourn
won't do it. So call remote_mourn_1 directly instead of
target_mourn_inferior. */
{
struct remote_state *rs = get_remote_state ();
int pid;
- char *dummy;
char *wait_status = NULL;
- if (!args)
- error_no_arg (_("process-id to attach"));
+ pid = parse_pid_to_attach (args);
- dummy = args;
- pid = strtol (args, &dummy, 0);
- /* Some targets don't set errno on errors, grrr! */
- if (pid == 0 && args == dummy)
- error (_("Illegal process-id: %s."), args);
+ /* Remote PID can be freely equal to getpid, do not check it here the same
+ way as in other targets. */
if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE)
error (_("This target does not support attaching to a process"));
printf_unfiltered (_("Attached to %s\n"),
target_pid_to_str (pid_to_ptid (pid)));
- /* Save the reply for later. */
- wait_status = alloca (strlen (rs->buf) + 1);
- strcpy (wait_status, rs->buf);
+ if (!non_stop)
+ {
+ /* Save the reply for later. */
+ wait_status = alloca (strlen (rs->buf) + 1);
+ strcpy (wait_status, rs->buf);
+ }
+ else if (strcmp (rs->buf, "OK") != 0)
+ error (_("Attaching to %s failed with: %s"),
+ target_pid_to_str (pid_to_ptid (pid)),
+ rs->buf);
}
else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE)
error (_("This target does not support attaching to a process"));
error (_("Attaching to %s failed"),
target_pid_to_str (pid_to_ptid (pid)));
- target_mark_running (target);
+ set_current_inferior (remote_add_inferior (pid, 1));
+
inferior_ptid = pid_to_ptid (pid);
- /* Now, if we have thread information, update inferior_ptid. */
- inferior_ptid = remote_current_thread (inferior_ptid);
+ if (non_stop)
+ {
+ struct thread_info *thread;
- /* Now, add the main thread to the thread list. */
- add_thread_silent (inferior_ptid);
+ /* Get list of threads. */
+ remote_threads_info (target);
+
+ thread = first_thread_of_process (pid);
+ if (thread)
+ inferior_ptid = thread->ptid;
+ else
+ inferior_ptid = pid_to_ptid (pid);
+
+ /* Invalidate our notion of the remote current thread. */
+ record_currthread (minus_one_ptid);
+ }
+ else
+ {
+ /* Now, if we have thread information, update inferior_ptid. */
+ inferior_ptid = remote_current_thread (inferior_ptid);
- attach_flag = 1;
+ /* Add the main thread to the thread list. */
+ add_thread_silent (inferior_ptid);
+ }
/* Next, if the target can specify a description, read it. We do
this before anything involving memory or registers. */
target_find_description ();
- /* Use the previously fetched status. */
- gdb_assert (wait_status != NULL);
- strcpy (rs->buf, wait_status);
- rs->cached_wait_status = 1;
+ if (!non_stop)
+ {
+ /* Use the previously fetched status. */
+ gdb_assert (wait_status != NULL);
+
+ if (target_can_async_p ())
+ {
+ struct stop_reply *stop_reply;
+ struct cleanup *old_chain;
+
+ stop_reply = stop_reply_xmalloc ();
+ old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
+ remote_parse_stop_reply (wait_status, stop_reply);
+ discard_cleanups (old_chain);
+ push_stop_reply (stop_reply);
+
+ target_async (inferior_event_handler, 0);
+ }
+ else
+ {
+ gdb_assert (wait_status != NULL);
+ strcpy (rs->buf, wait_status);
+ rs->cached_wait_status = 1;
+ }
+ }
+ else
+ gdb_assert (wait_status == NULL);
}
static void
-extended_remote_attach (char *args, int from_tty)
+extended_remote_attach (struct target_ops *ops, char *args, int from_tty)
{
- extended_remote_attach_1 (&extended_remote_ops, args, from_tty);
+ extended_remote_attach_1 (ops, args, from_tty);
}
/* Convert hex digit A to a number. */
error (_("Reply contains invalid hex digit %d"), a);
}
-static int
+int
hex2bin (const char *hex, gdb_byte *bin, int count)
{
int i;
return 'a' + nib - 10;
}
-static int
+int
bin2hex (const gdb_byte *bin, char *hex, int count)
{
int i;
support_S = 0;
support_c = 0;
support_C = 0;
+ rs->support_vCont_t = 0;
while (p && *p == ';')
{
p++;
support_c = 1;
else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0))
support_C = 1;
+ else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0))
+ rs->support_vCont_t = 1;
p = strchr (p, ';');
}
packet_ok (buf, &remote_protocol_packets[PACKET_vCont]);
}
+/* Helper function for building "vCont" resumptions. Write a
+ resumption to P. ENDP points to one-passed-the-end of the buffer
+ we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
+ thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
+ resumed thread should be single-stepped and/or signalled. If PTID
+ equals minus_one_ptid, then all threads are resumed; if PTID
+ represents a process, then all threads of the process are resumed;
+ the thread to be stepped and/or signalled is given in the global
+ INFERIOR_PTID. */
+
+static char *
+append_resumption (char *p, char *endp,
+ ptid_t ptid, int step, enum target_signal siggnal)
+{
+ struct remote_state *rs = get_remote_state ();
+
+ if (step && siggnal != TARGET_SIGNAL_0)
+ p += xsnprintf (p, endp - p, ";S%02x", siggnal);
+ else if (step)
+ p += xsnprintf (p, endp - p, ";s");
+ else if (siggnal != TARGET_SIGNAL_0)
+ p += xsnprintf (p, endp - p, ";C%02x", siggnal);
+ else
+ p += xsnprintf (p, endp - p, ";c");
+
+ if (remote_multi_process_p (rs) && ptid_is_pid (ptid))
+ {
+ ptid_t nptid;
+
+ /* All (-1) threads of process. */
+ nptid = ptid_build (ptid_get_pid (ptid), 0, -1);
+
+ p += xsnprintf (p, endp - p, ":");
+ p = write_ptid (p, endp, nptid);
+ }
+ else if (!ptid_equal (ptid, minus_one_ptid))
+ {
+ p += xsnprintf (p, endp - p, ":");
+ p = write_ptid (p, endp, ptid);
+ }
+
+ return p;
+}
+
/* Resume the remote inferior by using a "vCont" packet. The thread
to be resumed is PTID; STEP and SIGGNAL indicate whether the
resumed thread should be single-stepped and/or signalled. If PTID
remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
struct remote_state *rs = get_remote_state ();
- char *outbuf;
- struct cleanup *old_cleanup;
+ char *p;
+ char *endp;
if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN)
remote_vcont_probe (rs);
if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE)
return 0;
+ p = rs->buf;
+ endp = rs->buf + get_remote_packet_size ();
+
/* If we could generate a wider range of packets, we'd have to worry
about overflowing BUF. Should there be a generic
"multi-part-packet" packet? */
+ p += xsnprintf (p, endp - p, "vCont");
+
if (ptid_equal (ptid, magic_null_ptid))
{
/* MAGIC_NULL_PTID means that we don't have any active threads,
so we don't have any TID numbers the inferior will
understand. Make sure to only send forms that do not specify
a TID. */
- if (step && siggnal != TARGET_SIGNAL_0)
- outbuf = xstrprintf ("vCont;S%02x", siggnal);
- else if (step)
- outbuf = xstrprintf ("vCont;s");
- else if (siggnal != TARGET_SIGNAL_0)
- outbuf = xstrprintf ("vCont;C%02x", siggnal);
- else
- outbuf = xstrprintf ("vCont;c");
+ p = append_resumption (p, endp, minus_one_ptid, step, siggnal);
}
- else if (ptid_equal (ptid, minus_one_ptid))
+ else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid))
{
- /* Resume all threads, with preference for INFERIOR_PTID. */
- int tid = ptid_get_tid (inferior_ptid);
- if (step && siggnal != TARGET_SIGNAL_0)
- outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, tid);
- else if (step)
- outbuf = xstrprintf ("vCont;s:%x;c", tid);
- else if (siggnal != TARGET_SIGNAL_0)
- outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, tid);
- else
- outbuf = xstrprintf ("vCont;c");
+ /* Resume all threads (of all processes, or of a single
+ process), with preference for INFERIOR_PTID. This assumes
+ inferior_ptid belongs to the set of all threads we are about
+ to resume. */
+ if (step || siggnal != TARGET_SIGNAL_0)
+ {
+ /* Step inferior_ptid, with or without signal. */
+ p = append_resumption (p, endp, inferior_ptid, step, siggnal);
+ }
+
+ /* And continue others without a signal. */
+ p = append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0);
}
else
{
/* Scheduler locking; resume only PTID. */
- int tid = ptid_get_tid (ptid);
- if (step && siggnal != TARGET_SIGNAL_0)
- outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, tid);
- else if (step)
- outbuf = xstrprintf ("vCont;s:%x", tid);
- else if (siggnal != TARGET_SIGNAL_0)
- outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, tid);
- else
- outbuf = xstrprintf ("vCont;c:%x", tid);
+ p = append_resumption (p, endp, ptid, step, siggnal);
}
- gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ());
- old_cleanup = make_cleanup (xfree, outbuf);
-
- putpkt (outbuf);
+ gdb_assert (strlen (rs->buf) < get_remote_packet_size ());
+ putpkt (rs->buf);
- do_cleanups (old_cleanup);
+ if (non_stop)
+ {
+ /* In non-stop, the stub replies to vCont with "OK". The stop
+ reply will be reported asynchronously by means of a `%Stop'
+ notification. */
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (strcmp (rs->buf, "OK") != 0)
+ error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf);
+ }
return 1;
}
static int last_sent_step;
static void
-remote_resume (ptid_t ptid, int step, enum target_signal siggnal)
+remote_resume (struct target_ops *ops,
+ ptid_t ptid, int step, enum target_signal siggnal)
{
struct remote_state *rs = get_remote_state ();
char *buf;
remote_pass_signals ();
/* The vCont packet doesn't need to specify threads via Hc. */
- if (remote_vcont_resume (ptid, step, siggnal))
- goto done;
+ /* No reverse support (yet) for vCont. */
+ if (execution_direction != EXEC_REVERSE)
+ if (remote_vcont_resume (ptid, step, siggnal))
+ goto done;
/* All other supported resume packets do use Hc, so set the continue
thread. */
set_continue_thread (ptid);
buf = rs->buf;
- if (siggnal != TARGET_SIGNAL_0)
+ if (execution_direction == EXEC_REVERSE)
+ {
+ /* We don't pass signals to the target in reverse exec mode. */
+ if (info_verbose && siggnal != TARGET_SIGNAL_0)
+ warning (" - Can't pass signal %d to target in reverse: ignored.\n",
+ siggnal);
+
+ if (step
+ && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE)
+ error (_("Remote reverse-step not supported."));
+ if (!step
+ && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE)
+ error (_("Remote reverse-continue not supported."));
+
+ strcpy (buf, step ? "bs" : "bc");
+ }
+ else if (siggnal != TARGET_SIGNAL_0)
{
buf[0] = step ? 'S' : 'C';
buf[1] = tohex (((int) siggnal >> 4) & 0xf);
NOT asynchronously. */
if (target_can_async_p ())
target_async (inferior_event_handler, 0);
+
+ /* We've just told the target to resume. The remote server will
+ wait for the inferior to stop, and then send a stop reply. In
+ the mean time, we can't start another command/query ourselves
+ because the stub wouldn't be ready to process it. This applies
+ only to the base all-stop protocol, however. In non-stop (which
+ only supports vCont), the stub replies with an "OK", and is
+ immediate able to process further serial input. */
+ if (!non_stop)
+ rs->waiting_for_stop_reply = 1;
}
\f
signal (signo, remote_interrupt);
}
+/* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
+ thread, all threads of a remote process, or all threads of all
+ processes. */
+
+static void
+remote_stop_ns (ptid_t ptid)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *p = rs->buf;
+ char *endp = rs->buf + get_remote_packet_size ();
+
+ if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN)
+ remote_vcont_probe (rs);
+
+ if (!rs->support_vCont_t)
+ error (_("Remote server does not support stopping threads"));
+
+ if (ptid_equal (ptid, minus_one_ptid)
+ || (!remote_multi_process_p (rs) && ptid_is_pid (ptid)))
+ p += xsnprintf (p, endp - p, "vCont;t");
+ else
+ {
+ ptid_t nptid;
+
+ p += xsnprintf (p, endp - p, "vCont;t:");
+
+ if (ptid_is_pid (ptid))
+ /* All (-1) threads of process. */
+ nptid = ptid_build (ptid_get_pid (ptid), 0, -1);
+ else
+ {
+ /* Small optimization: if we already have a stop reply for
+ this thread, no use in telling the stub we want this
+ stopped. */
+ if (peek_stop_reply (ptid))
+ return;
+
+ nptid = ptid;
+ }
+
+ p = write_ptid (p, endp, nptid);
+ }
+
+ /* In non-stop, we get an immediate OK reply. The stop reply will
+ come in asynchronously by notification. */
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (strcmp (rs->buf, "OK") != 0)
+ error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf);
+}
+
+/* All-stop version of target_stop. Sends a break or a ^C to stop the
+ remote target. It is undefined which thread of which process
+ reports the stop. */
+
+static void
+remote_stop_as (ptid_t ptid)
+{
+ struct remote_state *rs = get_remote_state ();
+
+ rs->ctrlc_pending_p = 1;
+
+ /* If the inferior is stopped already, but the core didn't know
+ about it yet, just ignore the request. The cached wait status
+ will be collected in remote_wait. */
+ if (rs->cached_wait_status)
+ return;
+
+ /* Send interrupt_sequence to remote target. */
+ send_interrupt_sequence ();
+}
+
/* This is the generic stop called via the target vector. When a target
interrupt is requested, either by the command line or the GUI, we
will eventually end up here. */
+
static void
remote_stop (ptid_t ptid)
{
- /* Send a break or a ^C, depending on user preference. */
if (remote_debug)
fprintf_unfiltered (gdb_stdlog, "remote_stop called\n");
- if (remote_break)
- serial_send_break (remote_desc);
+ if (non_stop)
+ remote_stop_ns (ptid);
else
- serial_write (remote_desc, "\003", 1);
+ remote_stop_as (ptid);
}
/* Ask the user what to do when an interrupt is received. */
{
target_terminal_ours ();
- if (query ("Interrupted while waiting for the program.\n\
-Give up (and stop debugging it)? "))
+ if (target_can_async_p ())
{
- target_mourn_inferior ();
signal (SIGINT, handle_sigint);
deprecated_throw_reason (RETURN_QUIT);
}
+ else
+ {
+ if (query (_("Interrupted while waiting for the program.\n\
+Give up (and stop debugging it)? ")))
+ {
+ pop_target ();
+ deprecated_throw_reason (RETURN_QUIT);
+ }
+ }
target_terminal_inferior ();
}
/* Nothing to do. */
return;
- /* FIXME: cagney/1999-09-27: Shouldn't need to test for
- sync_execution here. This function should only be called when
- GDB is resuming the inferior in the forground. A background
- resume (``run&'') should leave GDB in control of the terminal and
- consequently should not call this code. */
- if (!sync_execution)
- return;
- /* FIXME: cagney/1999-09-27: Closely related to the above. Make
- calls target_terminal_*() idenpotent. The event-loop GDB talking
- to an asynchronous target with a synchronous command calls this
- function from both event-top.c and infrun.c/infcmd.c. Once GDB
- stops trying to transfer the terminal to the target when it
- shouldn't this guard can go away. */
+ /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
+ idempotent. The event-loop GDB talking to an asynchronous target
+ with a synchronous command calls this function from both
+ event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
+ transfer the terminal to the target when it shouldn't this guard
+ can go away. */
if (!remote_async_terminal_ours_p)
return;
delete_file_handler (input_fd);
return;
/* See FIXME in remote_terminal_inferior. */
- if (!sync_execution)
- return;
- /* See FIXME in remote_terminal_inferior. */
if (remote_async_terminal_ours_p)
return;
cleanup_sigint_signal_handler (NULL);
tb[1] = 0;
fputs_unfiltered (tb, gdb_stdtarg);
}
- gdb_flush (gdb_stdtarg);
-}
+ gdb_flush (gdb_stdtarg);
+ }
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
+typedef struct cached_reg
+{
+ int num;
+ gdb_byte data[MAX_REGISTER_SIZE];
+} cached_reg_t;
-static ptid_t
-remote_wait (ptid_t ptid, struct target_waitstatus *status)
+DEF_VEC_O(cached_reg_t);
+
+struct stop_reply
{
- struct remote_state *rs = get_remote_state ();
- struct remote_arch_state *rsa = get_remote_arch_state ();
- ULONGEST thread_num = -1;
- ULONGEST process_num = -1;
- ULONGEST addr;
- int solibs_changed = 0;
+ struct stop_reply *next;
- status->kind = TARGET_WAITKIND_EXITED;
- status->value.integer = 0;
+ ptid_t ptid;
- while (1)
+ struct target_waitstatus ws;
+
+ VEC(cached_reg_t) *regcache;
+
+ int stopped_by_watchpoint_p;
+ CORE_ADDR watch_data_address;
+
+ int solibs_changed;
+ int replay_event;
+
+ int core;
+};
+
+/* The list of already fetched and acknowledged stop events. */
+static struct stop_reply *stop_reply_queue;
+
+static struct stop_reply *
+stop_reply_xmalloc (void)
+{
+ struct stop_reply *r = XMALLOC (struct stop_reply);
+ r->next = NULL;
+ return r;
+}
+
+static void
+stop_reply_xfree (struct stop_reply *r)
+{
+ if (r != NULL)
{
- char *buf, *p;
+ VEC_free (cached_reg_t, r->regcache);
+ xfree (r);
+ }
+}
- if (rs->cached_wait_status)
- /* Use the cached wait status, but only once. */
- rs->cached_wait_status = 0;
- else
- {
- if (!target_is_async_p ())
- {
- ofunc = signal (SIGINT, remote_interrupt);
- /* If the user hit C-c before this packet, or between packets,
- pretend that it was hit right here. */
- if (quit_flag)
- {
- quit_flag = 0;
- remote_interrupt (SIGINT);
- }
- }
- /* FIXME: cagney/1999-09-27: If we're in async mode we should
- _never_ wait for ever -> test on target_is_async_p().
- However, before we do that we need to ensure that the caller
- knows how to take the target into/out of async mode. */
- getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p);
- if (!target_is_async_p ())
- signal (SIGINT, ofunc);
- }
+/* Discard all pending stop replies of inferior PID. If PID is -1,
+ discard everything. */
- buf = rs->buf;
+static void
+discard_pending_stop_replies (int pid)
+{
+ struct stop_reply *prev = NULL, *reply, *next;
- remote_stopped_by_watchpoint_p = 0;
+ /* Discard the in-flight notification. */
+ if (pending_stop_reply != NULL
+ && (pid == -1
+ || ptid_get_pid (pending_stop_reply->ptid) == pid))
+ {
+ stop_reply_xfree (pending_stop_reply);
+ pending_stop_reply = NULL;
+ }
- switch (buf[0])
+ /* Discard the stop replies we have already pulled with
+ vStopped. */
+ for (reply = stop_reply_queue; reply; reply = next)
+ {
+ next = reply->next;
+ if (pid == -1
+ || ptid_get_pid (reply->ptid) == pid)
{
- case 'E': /* Error of some sort. */
- /* We're out of sync with the target now. Did it continue or not?
- Not is more likely, so report a stop. */
- warning (_("Remote failure reply: %s"), buf);
- status->kind = TARGET_WAITKIND_STOPPED;
- status->value.sig = TARGET_SIGNAL_0;
- goto got_status;
- case 'F': /* File-I/O request. */
- remote_fileio_request (buf);
- continue;
- case 'T': /* Status with PC, SP, FP, ... */
- {
- gdb_byte regs[MAX_REGISTER_SIZE];
+ if (reply == stop_reply_queue)
+ stop_reply_queue = reply->next;
+ else
+ prev->next = reply->next;
- /* Expedited reply, containing Signal, {regno, reg} repeat. */
- /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
- ss = signal number
- n... = register number
- r... = register contents
- */
- p = &buf[3]; /* after Txx */
+ stop_reply_xfree (reply);
+ }
+ else
+ prev = reply;
+ }
+}
- while (*p)
- {
- char *p1;
- char *p_temp;
- int fieldsize;
- LONGEST pnum = 0;
+/* Cleanup wrapper. */
- /* If the packet contains a register number, save it
- in pnum and set p1 to point to the character
- following it. Otherwise p1 points to p. */
+static void
+do_stop_reply_xfree (void *arg)
+{
+ struct stop_reply *r = arg;
+ stop_reply_xfree (r);
+}
- /* If this packet is an awatch packet, don't parse the
- 'a' as a register number. */
+/* Look for a queued stop reply belonging to PTID. If one is found,
+ remove it from the queue, and return it. Returns NULL if none is
+ found. If there are still queued events left to process, tell the
+ event loop to get back to target_wait soon. */
- if (strncmp (p, "awatch", strlen("awatch")) != 0)
- {
- /* Read the ``P'' register number. */
- pnum = strtol (p, &p_temp, 16);
- p1 = p_temp;
- }
- else
- p1 = p;
+static struct stop_reply *
+queued_stop_reply (ptid_t ptid)
+{
+ struct stop_reply *it;
+ struct stop_reply **it_link;
- if (p1 == p) /* No register number present here. */
- {
- p1 = strchr (p, ':');
- if (p1 == NULL)
- error (_("Malformed packet(a) (missing colon): %s\n\
-Packet: '%s'\n"),
- p, buf);
- if (strncmp (p, "thread", p1 - p) == 0)
- {
- p_temp = unpack_varlen_hex (++p1, &thread_num);
- p = p_temp;
- }
- else if ((strncmp (p, "watch", p1 - p) == 0)
- || (strncmp (p, "rwatch", p1 - p) == 0)
- || (strncmp (p, "awatch", p1 - p) == 0))
- {
- remote_stopped_by_watchpoint_p = 1;
- p = unpack_varlen_hex (++p1, &addr);
- remote_watch_data_address = (CORE_ADDR)addr;
- }
- else if (strncmp (p, "library", p1 - p) == 0)
- {
- p1++;
- p_temp = p1;
- while (*p_temp && *p_temp != ';')
- p_temp++;
+ it = stop_reply_queue;
+ it_link = &stop_reply_queue;
+ while (it)
+ {
+ if (ptid_match (it->ptid, ptid))
+ {
+ *it_link = it->next;
+ it->next = NULL;
+ break;
+ }
- solibs_changed = 1;
- p = p_temp;
- }
- else
- {
- /* Silently skip unknown optional info. */
- p_temp = strchr (p1 + 1, ';');
- if (p_temp)
- p = p_temp;
- }
- }
- else
- {
- struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum);
- p = p1;
+ it_link = &it->next;
+ it = *it_link;
+ }
- if (*p != ':')
- error (_("Malformed packet(b) (missing colon): %s\n\
-Packet: '%s'\n"),
- p, buf);
- ++p;
+ if (stop_reply_queue)
+ /* There's still at least an event left. */
+ mark_async_event_handler (remote_async_inferior_event_token);
- if (reg == NULL)
- error (_("Remote sent bad register number %s: %s\n\
-Packet: '%s'\n"),
- phex_nz (pnum, 0), p, buf);
-
- fieldsize = hex2bin (p, regs,
- register_size (target_gdbarch,
- reg->regnum));
- p += 2 * fieldsize;
- if (fieldsize < register_size (target_gdbarch,
- reg->regnum))
- warning (_("Remote reply is too short: %s"), buf);
- regcache_raw_supply (get_current_regcache (),
- reg->regnum, regs);
- }
+ return it;
+}
- if (*p != ';')
- error (_("Remote register badly formatted: %s\nhere: %s"),
- buf, p);
- ++p;
- }
- }
- /* fall through */
- case 'S': /* Old style status, just signal only. */
- if (solibs_changed)
- status->kind = TARGET_WAITKIND_LOADED;
+/* Push a fully parsed stop reply in the stop reply queue. Since we
+ know that we now have at least one queued event left to pass to the
+ core side, tell the event loop to get back to target_wait soon. */
+
+static void
+push_stop_reply (struct stop_reply *new_event)
+{
+ struct stop_reply *event;
+
+ if (stop_reply_queue)
+ {
+ for (event = stop_reply_queue;
+ event && event->next;
+ event = event->next)
+ ;
+
+ event->next = new_event;
+ }
+ else
+ stop_reply_queue = new_event;
+
+ mark_async_event_handler (remote_async_inferior_event_token);
+}
+
+/* Returns true if we have a stop reply for PTID. */
+
+static int
+peek_stop_reply (ptid_t ptid)
+{
+ struct stop_reply *it;
+
+ for (it = stop_reply_queue; it; it = it->next)
+ if (ptid_equal (ptid, it->ptid))
+ {
+ if (it->ws.kind == TARGET_WAITKIND_STOPPED)
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Parse the stop reply in BUF. Either the function succeeds, and the
+ result is stored in EVENT, or throws an error. */
+
+static void
+remote_parse_stop_reply (char *buf, struct stop_reply *event)
+{
+ struct remote_arch_state *rsa = get_remote_arch_state ();
+ ULONGEST addr;
+ char *p;
+
+ event->ptid = null_ptid;
+ event->ws.kind = TARGET_WAITKIND_IGNORE;
+ event->ws.value.integer = 0;
+ event->solibs_changed = 0;
+ event->replay_event = 0;
+ event->stopped_by_watchpoint_p = 0;
+ event->regcache = NULL;
+ event->core = -1;
+
+ switch (buf[0])
+ {
+ case 'T': /* Status with PC, SP, FP, ... */
+ /* Expedited reply, containing Signal, {regno, reg} repeat. */
+ /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
+ ss = signal number
+ n... = register number
+ r... = register contents
+ */
+
+ p = &buf[3]; /* after Txx */
+ while (*p)
+ {
+ char *p1;
+ char *p_temp;
+ int fieldsize;
+ LONGEST pnum = 0;
+
+ /* If the packet contains a register number, save it in
+ pnum and set p1 to point to the character following it.
+ Otherwise p1 points to p. */
+
+ /* If this packet is an awatch packet, don't parse the 'a'
+ as a register number. */
+
+ if (strncmp (p, "awatch", strlen("awatch")) != 0
+ && strncmp (p, "core", strlen ("core") != 0))
+ {
+ /* Read the ``P'' register number. */
+ pnum = strtol (p, &p_temp, 16);
+ p1 = p_temp;
+ }
+ else
+ p1 = p;
+
+ if (p1 == p) /* No register number present here. */
+ {
+ p1 = strchr (p, ':');
+ if (p1 == NULL)
+ error (_("Malformed packet(a) (missing colon): %s\n\
+Packet: '%s'\n"),
+ p, buf);
+ if (strncmp (p, "thread", p1 - p) == 0)
+ event->ptid = read_ptid (++p1, &p);
+ else if ((strncmp (p, "watch", p1 - p) == 0)
+ || (strncmp (p, "rwatch", p1 - p) == 0)
+ || (strncmp (p, "awatch", p1 - p) == 0))
+ {
+ event->stopped_by_watchpoint_p = 1;
+ p = unpack_varlen_hex (++p1, &addr);
+ event->watch_data_address = (CORE_ADDR) addr;
+ }
+ else if (strncmp (p, "library", p1 - p) == 0)
+ {
+ p1++;
+ p_temp = p1;
+ while (*p_temp && *p_temp != ';')
+ p_temp++;
+
+ event->solibs_changed = 1;
+ p = p_temp;
+ }
+ else if (strncmp (p, "replaylog", p1 - p) == 0)
+ {
+ /* NO_HISTORY event.
+ p1 will indicate "begin" or "end", but
+ it makes no difference for now, so ignore it. */
+ event->replay_event = 1;
+ p_temp = strchr (p1 + 1, ';');
+ if (p_temp)
+ p = p_temp;
+ }
+ else if (strncmp (p, "core", p1 - p) == 0)
+ {
+ ULONGEST c;
+ p = unpack_varlen_hex (++p1, &c);
+ event->core = c;
+ }
+ else
+ {
+ /* Silently skip unknown optional info. */
+ p_temp = strchr (p1 + 1, ';');
+ if (p_temp)
+ p = p_temp;
+ }
+ }
else
{
- status->kind = TARGET_WAITKIND_STOPPED;
- status->value.sig = (enum target_signal)
- (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+ struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum);
+ cached_reg_t cached_reg;
+
+ p = p1;
+
+ if (*p != ':')
+ error (_("Malformed packet(b) (missing colon): %s\n\
+Packet: '%s'\n"),
+ p, buf);
+ ++p;
+
+ if (reg == NULL)
+ error (_("Remote sent bad register number %s: %s\n\
+Packet: '%s'\n"),
+ hex_string (pnum), p, buf);
+
+ cached_reg.num = reg->regnum;
+
+ fieldsize = hex2bin (p, cached_reg.data,
+ register_size (target_gdbarch,
+ reg->regnum));
+ p += 2 * fieldsize;
+ if (fieldsize < register_size (target_gdbarch,
+ reg->regnum))
+ warning (_("Remote reply is too short: %s"), buf);
+
+ VEC_safe_push (cached_reg_t, event->regcache, &cached_reg);
}
- goto got_status;
- case 'W': /* Target exited. */
+
+ if (*p != ';')
+ error (_("Remote register badly formatted: %s\nhere: %s"),
+ buf, p);
+ ++p;
+ }
+ /* fall through */
+ case 'S': /* Old style status, just signal only. */
+ if (event->solibs_changed)
+ event->ws.kind = TARGET_WAITKIND_LOADED;
+ else if (event->replay_event)
+ event->ws.kind = TARGET_WAITKIND_NO_HISTORY;
+ else
+ {
+ event->ws.kind = TARGET_WAITKIND_STOPPED;
+ event->ws.value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+ }
+ break;
+ case 'W': /* Target exited. */
+ case 'X':
+ {
+ char *p;
+ int pid;
+ ULONGEST value;
+
+ /* GDB used to accept only 2 hex chars here. Stubs should
+ only send more if they detect GDB supports multi-process
+ support. */
+ p = unpack_varlen_hex (&buf[1], &value);
+
+ if (buf[0] == 'W')
{
/* The remote process exited. */
- status->kind = TARGET_WAITKIND_EXITED;
- status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
- goto got_status;
+ event->ws.kind = TARGET_WAITKIND_EXITED;
+ event->ws.value.integer = value;
}
- case 'X':
- status->kind = TARGET_WAITKIND_SIGNALLED;
- status->value.sig = (enum target_signal)
- (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+ else
+ {
+ /* The remote process exited with a signal. */
+ event->ws.kind = TARGET_WAITKIND_SIGNALLED;
+ event->ws.value.sig = (enum target_signal) value;
+ }
+
+ /* If no process is specified, assume inferior_ptid. */
+ pid = ptid_get_pid (inferior_ptid);
+ if (*p == '\0')
+ ;
+ else if (*p == ';')
+ {
+ p++;
+
+ if (p == '\0')
+ ;
+ else if (strncmp (p,
+ "process:", sizeof ("process:") - 1) == 0)
+ {
+ ULONGEST upid;
+ p += sizeof ("process:") - 1;
+ unpack_varlen_hex (p, &upid);
+ pid = upid;
+ }
+ else
+ error (_("unknown stop reply packet: %s"), buf);
+ }
+ else
+ error (_("unknown stop reply packet: %s"), buf);
+ event->ptid = pid_to_ptid (pid);
+ }
+ break;
+ }
+
+ if (non_stop && ptid_equal (event->ptid, null_ptid))
+ error (_("No process or thread specified in stop reply: %s"), buf);
+}
+
+/* When the stub wants to tell GDB about a new stop reply, it sends a
+ stop notification (%Stop). Those can come it at any time, hence,
+ we have to make sure that any pending putpkt/getpkt sequence we're
+ making is finished, before querying the stub for more events with
+ vStopped. E.g., if we started a vStopped sequence immediatelly
+ upon receiving the %Stop notification, something like this could
+ happen:
+
+ 1.1) --> Hg 1
+ 1.2) <-- OK
+ 1.3) --> g
+ 1.4) <-- %Stop
+ 1.5) --> vStopped
+ 1.6) <-- (registers reply to step #1.3)
+
+ Obviously, the reply in step #1.6 would be unexpected to a vStopped
+ query.
+
+ To solve this, whenever we parse a %Stop notification sucessfully,
+ we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
+ doing whatever we were doing:
+
+ 2.1) --> Hg 1
+ 2.2) <-- OK
+ 2.3) --> g
+ 2.4) <-- %Stop
+ <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
+ 2.5) <-- (registers reply to step #2.3)
- goto got_status;
- case 'O': /* Console output. */
- remote_console_output (buf + 1);
- if (target_can_async_p ())
+ Eventualy after step #2.5, we return to the event loop, which
+ notices there's an event on the
+ REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
+ associated callback --- the function below. At this point, we're
+ always safe to start a vStopped sequence. :
+
+ 2.6) --> vStopped
+ 2.7) <-- T05 thread:2
+ 2.8) --> vStopped
+ 2.9) --> OK
+*/
+
+static void
+remote_get_pending_stop_replies (void)
+{
+ struct remote_state *rs = get_remote_state ();
+
+ if (pending_stop_reply)
+ {
+ /* acknowledge */
+ putpkt ("vStopped");
+
+ /* Now we can rely on it. */
+ push_stop_reply (pending_stop_reply);
+ pending_stop_reply = NULL;
+
+ while (1)
+ {
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (strcmp (rs->buf, "OK") == 0)
+ break;
+ else
{
- /* Return immediately to the event loop. The event loop
- will still be waiting on the inferior afterwards. */
- status->kind = TARGET_WAITKIND_IGNORE;
- goto got_status;
+ struct cleanup *old_chain;
+ struct stop_reply *stop_reply = stop_reply_xmalloc ();
+
+ old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
+ remote_parse_stop_reply (rs->buf, stop_reply);
+
+ /* acknowledge */
+ putpkt ("vStopped");
+
+ if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE)
+ {
+ /* Now we can rely on it. */
+ discard_cleanups (old_chain);
+ push_stop_reply (stop_reply);
+ }
+ else
+ /* We got an unknown stop reply. */
+ do_cleanups (old_chain);
}
- else
- continue;
- case '\0':
- if (last_sent_signal != TARGET_SIGNAL_0)
+ }
+ }
+}
+
+
+/* Called when it is decided that STOP_REPLY holds the info of the
+ event that is to be returned to the core. This function always
+ destroys STOP_REPLY. */
+
+static ptid_t
+process_stop_reply (struct stop_reply *stop_reply,
+ struct target_waitstatus *status)
+{
+ ptid_t ptid;
+ struct thread_info *info;
+
+ *status = stop_reply->ws;
+ ptid = stop_reply->ptid;
+
+ /* If no thread/process was reported by the stub, assume the current
+ inferior. */
+ if (ptid_equal (ptid, null_ptid))
+ ptid = inferior_ptid;
+
+ if (status->kind != TARGET_WAITKIND_EXITED
+ && status->kind != TARGET_WAITKIND_SIGNALLED)
+ {
+ /* Expedited registers. */
+ if (stop_reply->regcache)
+ {
+ struct regcache *regcache
+ = get_thread_arch_regcache (ptid, target_gdbarch);
+ cached_reg_t *reg;
+ int ix;
+
+ for (ix = 0;
+ VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg);
+ ix++)
+ regcache_raw_supply (regcache, reg->num, reg->data);
+ VEC_free (cached_reg_t, stop_reply->regcache);
+ }
+
+ remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p;
+ remote_watch_data_address = stop_reply->watch_data_address;
+
+ remote_notice_new_inferior (ptid, 0);
+ demand_private_info (ptid)->core = stop_reply->core;
+ }
+
+ stop_reply_xfree (stop_reply);
+ return ptid;
+}
+
+/* The non-stop mode version of target_wait. */
+
+static ptid_t
+remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options)
+{
+ struct remote_state *rs = get_remote_state ();
+ struct stop_reply *stop_reply;
+ int ret;
+
+ /* If in non-stop mode, get out of getpkt even if a
+ notification is received. */
+
+ ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
+ 0 /* forever */);
+ while (1)
+ {
+ if (ret != -1)
+ switch (rs->buf[0])
+ {
+ case 'E': /* Error of some sort. */
+ /* We're out of sync with the target now. Did it continue
+ or not? We can't tell which thread it was in non-stop,
+ so just ignore this. */
+ warning (_("Remote failure reply: %s"), rs->buf);
+ break;
+ case 'O': /* Console output. */
+ remote_console_output (rs->buf + 1);
+ break;
+ default:
+ warning (_("Invalid remote reply: %s"), rs->buf);
+ break;
+ }
+
+ /* Acknowledge a pending stop reply that may have arrived in the
+ mean time. */
+ if (pending_stop_reply != NULL)
+ remote_get_pending_stop_replies ();
+
+ /* If indeed we noticed a stop reply, we're done. */
+ stop_reply = queued_stop_reply (ptid);
+ if (stop_reply != NULL)
+ return process_stop_reply (stop_reply, status);
+
+ /* Still no event. If we're just polling for an event, then
+ return to the event loop. */
+ if (options & TARGET_WNOHANG)
+ {
+ status->kind = TARGET_WAITKIND_IGNORE;
+ return minus_one_ptid;
+ }
+
+ /* Otherwise do a blocking wait. */
+ ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
+ 1 /* forever */);
+ }
+}
+
+/* Wait until the remote machine stops, then return, storing status in
+ STATUS just as `wait' would. */
+
+static ptid_t
+remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options)
+{
+ struct remote_state *rs = get_remote_state ();
+ ptid_t event_ptid = null_ptid;
+ char *buf;
+ struct stop_reply *stop_reply;
+
+ again:
+
+ status->kind = TARGET_WAITKIND_IGNORE;
+ status->value.integer = 0;
+
+ stop_reply = queued_stop_reply (ptid);
+ if (stop_reply != NULL)
+ return process_stop_reply (stop_reply, status);
+
+ if (rs->cached_wait_status)
+ /* Use the cached wait status, but only once. */
+ rs->cached_wait_status = 0;
+ else
+ {
+ int ret;
+
+ if (!target_is_async_p ())
+ {
+ ofunc = signal (SIGINT, remote_interrupt);
+ /* If the user hit C-c before this packet, or between packets,
+ pretend that it was hit right here. */
+ if (quit_flag)
{
- /* Zero length reply means that we tried 'S' or 'C' and
- the remote system doesn't support it. */
- target_terminal_ours_for_output ();
- printf_filtered
- ("Can't send signals to this remote system. %s not sent.\n",
- target_signal_to_name (last_sent_signal));
- last_sent_signal = TARGET_SIGNAL_0;
- target_terminal_inferior ();
-
- strcpy ((char *) buf, last_sent_step ? "s" : "c");
- putpkt ((char *) buf);
- continue;
+ quit_flag = 0;
+ remote_interrupt (SIGINT);
}
- /* else fallthrough */
- default:
- warning (_("Invalid remote reply: %s"), buf);
- continue;
}
+
+ /* FIXME: cagney/1999-09-27: If we're in async mode we should
+ _never_ wait for ever -> test on target_is_async_p().
+ However, before we do that we need to ensure that the caller
+ knows how to take the target into/out of async mode. */
+ ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p);
+ if (!target_is_async_p ())
+ signal (SIGINT, ofunc);
+ }
+
+ buf = rs->buf;
+
+ remote_stopped_by_watchpoint_p = 0;
+
+ /* We got something. */
+ rs->waiting_for_stop_reply = 0;
+
+ /* Assume that the target has acknowledged Ctrl-C unless we receive
+ an 'F' or 'O' packet. */
+ if (buf[0] != 'F' && buf[0] != 'O')
+ rs->ctrlc_pending_p = 0;
+
+ switch (buf[0])
+ {
+ case 'E': /* Error of some sort. */
+ /* We're out of sync with the target now. Did it continue or
+ not? Not is more likely, so report a stop. */
+ warning (_("Remote failure reply: %s"), buf);
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = TARGET_SIGNAL_0;
+ break;
+ case 'F': /* File-I/O request. */
+ remote_fileio_request (buf, rs->ctrlc_pending_p);
+ rs->ctrlc_pending_p = 0;
+ break;
+ case 'T': case 'S': case 'X': case 'W':
+ {
+ struct stop_reply *stop_reply;
+ struct cleanup *old_chain;
+
+ stop_reply = stop_reply_xmalloc ();
+ old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
+ remote_parse_stop_reply (buf, stop_reply);
+ discard_cleanups (old_chain);
+ event_ptid = process_stop_reply (stop_reply, status);
+ break;
+ }
+ case 'O': /* Console output. */
+ remote_console_output (buf + 1);
+
+ /* The target didn't really stop; keep waiting. */
+ rs->waiting_for_stop_reply = 1;
+
+ break;
+ case '\0':
+ if (last_sent_signal != TARGET_SIGNAL_0)
+ {
+ /* Zero length reply means that we tried 'S' or 'C' and the
+ remote system doesn't support it. */
+ target_terminal_ours_for_output ();
+ printf_filtered
+ ("Can't send signals to this remote system. %s not sent.\n",
+ target_signal_to_name (last_sent_signal));
+ last_sent_signal = TARGET_SIGNAL_0;
+ target_terminal_inferior ();
+
+ strcpy ((char *) buf, last_sent_step ? "s" : "c");
+ putpkt ((char *) buf);
+
+ /* We just told the target to resume, so a stop reply is in
+ order. */
+ rs->waiting_for_stop_reply = 1;
+ break;
+ }
+ /* else fallthrough */
+ default:
+ warning (_("Invalid remote reply: %s"), buf);
+ /* Keep waiting. */
+ rs->waiting_for_stop_reply = 1;
+ break;
+ }
+
+ if (status->kind == TARGET_WAITKIND_IGNORE)
+ {
+ /* Nothing interesting happened. If we're doing a non-blocking
+ poll, we're done. Otherwise, go back to waiting. */
+ if (options & TARGET_WNOHANG)
+ return minus_one_ptid;
+ else
+ goto again;
+ }
+ else if (status->kind != TARGET_WAITKIND_EXITED
+ && status->kind != TARGET_WAITKIND_SIGNALLED)
+ {
+ if (!ptid_equal (event_ptid, null_ptid))
+ record_currthread (event_ptid);
+ else
+ event_ptid = inferior_ptid;
}
-got_status:
- if (thread_num != -1)
+ else
+ /* A process exit. Invalidate our notion of current thread. */
+ record_currthread (minus_one_ptid);
+
+ return event_ptid;
+}
+
+/* Wait until the remote machine stops, then return, storing status in
+ STATUS just as `wait' would. */
+
+static ptid_t
+remote_wait (struct target_ops *ops,
+ ptid_t ptid, struct target_waitstatus *status, int options)
+{
+ ptid_t event_ptid;
+
+ if (non_stop)
+ event_ptid = remote_wait_ns (ptid, status, options);
+ else
+ event_ptid = remote_wait_as (ptid, status, options);
+
+ if (target_can_async_p ())
{
- ptid_t ptid;
- ptid = ptid_build (ptid_get_pid (inferior_ptid), 0, thread_num);
- record_currthread (ptid);
- return ptid;
+ /* If there are are events left in the queue tell the event loop
+ to return here. */
+ if (stop_reply_queue)
+ mark_async_event_handler (remote_async_inferior_event_token);
}
- return inferior_ptid;
+ return event_ptid;
}
/* Fetch a single register using a 'p' packet. */
*p++ = 'p';
p += hexnumstr (p, reg->pnum);
*p++ = '\0';
- remote_send (&rs->buf, &rs->buf_size);
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
buf = rs->buf;
case PACKET_UNKNOWN:
return 0;
case PACKET_ERROR:
- error (_("Could not fetch register \"%s\""),
- gdbarch_register_name (get_regcache_arch (regcache), reg->regnum));
+ error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
+ gdbarch_register_name (get_regcache_arch (regcache),
+ reg->regnum),
+ buf);
}
/* If this register is unfetchable, tell the regcache. */
send_g_packet (void)
{
struct remote_state *rs = get_remote_state ();
- int i, buf_len;
- char *p;
- char *regs;
+ int buf_len;
sprintf (rs->buf, "g");
remote_send (&rs->buf, &rs->buf_size);
}
static void
-remote_fetch_registers (struct regcache *regcache, int regnum)
+remote_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
- struct remote_state *rs = get_remote_state ();
struct remote_arch_state *rsa = get_remote_arch_state ();
int i;
packet was not recognized. */
static int
-store_register_using_P (const struct regcache *regcache, struct packet_reg *reg)
+store_register_using_P (const struct regcache *regcache,
+ struct packet_reg *reg)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
struct remote_state *rs = get_remote_state ();
- struct remote_arch_state *rsa = get_remote_arch_state ();
/* Try storing a single register. */
char *buf = rs->buf;
gdb_byte regp[MAX_REGISTER_SIZE];
p = buf + strlen (buf);
regcache_raw_collect (regcache, reg->regnum, regp);
bin2hex (regp, p, register_size (gdbarch, reg->regnum));
- remote_send (&rs->buf, &rs->buf_size);
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P]))
{
case PACKET_OK:
return 1;
case PACKET_ERROR:
- error (_("Could not write register \"%s\""),
- gdbarch_register_name (gdbarch, reg->regnum));
+ error (_("Could not write register \"%s\"; remote failure reply '%s'"),
+ gdbarch_register_name (gdbarch, reg->regnum), rs->buf);
case PACKET_UNKNOWN:
return 0;
default:
/* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
updated. */
bin2hex (regs, p, rsa->sizeof_g_packet);
- remote_send (&rs->buf, &rs->buf_size);
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (packet_check_result (rs->buf) == PACKET_ERROR)
+ error (_("Could not write registers; remote failure reply '%s'"),
+ rs->buf);
}
/* Store register REGNUM, or all registers if REGNUM == -1, from the contents
of the register cache buffer. FIXME: ignores errors. */
static void
-remote_store_registers (struct regcache *regcache, int regnum)
+remote_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
- struct remote_state *rs = get_remote_state ();
struct remote_arch_state *rsa = get_remote_arch_state ();
int i;
}
return origlen;
}
+\f
+
+/* Remote notification handler. */
+
+static void
+handle_notification (char *buf, size_t length)
+{
+ if (strncmp (buf, "Stop:", 5) == 0)
+ {
+ if (pending_stop_reply)
+ {
+ /* We've already parsed the in-flight stop-reply, but the
+ stub for some reason thought we didn't, possibly due to
+ timeout on its side. Just ignore it. */
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n");
+ }
+ else
+ {
+ struct cleanup *old_chain;
+ struct stop_reply *reply = stop_reply_xmalloc ();
+ old_chain = make_cleanup (do_stop_reply_xfree, reply);
+
+ remote_parse_stop_reply (buf + 5, reply);
+
+ discard_cleanups (old_chain);
+
+ /* Be careful to only set it after parsing, since an error
+ may be thrown then. */
+ pending_stop_reply = reply;
+
+ /* Notify the event loop there's a stop reply to acknowledge
+ and that there may be more events to fetch. */
+ mark_async_event_handler (remote_async_get_pending_events_token);
+
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "stop notification captured\n");
+ }
+ }
+ else
+ /* We ignore notifications we don't recognize, for compatibility
+ with newer stubs. */
+ ;
+}
+
\f
/* Read or write LEN bytes from inferior memory at MEMADDR,
transferring to or from debugger address BUFFER. Write to inferior
{
int res;
+ set_general_thread (inferior_ptid);
+
if (should_write)
res = remote_write_bytes (mem_addr, buffer, mem_len);
else
FORMAT and the remaining arguments, then gets the reply. Returns
whether the packet was a success, a failure, or unknown. */
-enum packet_result
+static enum packet_result
remote_send_printf (const char *format, ...)
{
struct remote_state *rs = get_remote_state ();
remote_flash_erase (struct target_ops *ops,
ULONGEST address, LONGEST length)
{
+ int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
int saved_remote_timeout = remote_timeout;
enum packet_result ret;
remote_timeout = remote_flash_timeout;
ret = remote_send_printf ("vFlashErase:%s,%s",
- paddr (address),
+ phex (address, addr_size),
phex (length, 4));
switch (ret)
{
switch ((enum serial_rc) ch)
{
case SERIAL_EOF:
- target_mourn_inferior ();
+ pop_target ();
error (_("Remote connection closed"));
/* no return */
case SERIAL_ERROR:
error (_("Remote failure reply: %s"), *buf);
}
+/* Return a pointer to an xmalloc'ed string representing an escaped
+ version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
+ etc. The caller is responsible for releasing the returned
+ memory. */
+
+static char *
+escape_buffer (const char *buf, int n)
+{
+ struct cleanup *old_chain;
+ struct ui_file *stb;
+ char *str;
+
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
+
+ fputstrn_unfiltered (buf, n, 0, stb);
+ str = ui_file_xstrdup (stb, NULL);
+ do_cleanups (old_chain);
+ return str;
+}
+
/* Display a null-terminated packet on stdout, for debugging, using C
string notation. */
int tcount = 0;
char *p;
+ /* Catch cases like trying to read memory or listing threads while
+ we're waiting for a stop reply. The remote server wouldn't be
+ ready to handle this request, so we'd hang and timeout. We don't
+ have to worry about this in synchronous mode, because in that
+ case it's not possible to issue a command while the target is
+ running. This is not a problem in non-stop mode, because in that
+ case, the stub is always ready to process serial input. */
+ if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply)
+ error (_("Cannot execute this command while the target is running."));
+
/* We're sending out a new packet. Make sure we don't look at a
stale cached response. */
rs->cached_wait_status = 0;
if (remote_debug)
{
+ struct cleanup *old_chain;
+ char *str;
+
*p = '\0';
- fprintf_unfiltered (gdb_stdlog, "Sending packet: ");
- fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog);
- fprintf_unfiltered (gdb_stdlog, "...");
+ str = escape_buffer (buf2, p - buf2);
+ old_chain = make_cleanup (xfree, str);
+ fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str);
gdb_flush (gdb_stdlog);
+ do_cleanups (old_chain);
}
if (serial_write (remote_desc, buf2, p - buf2))
perror_with_name (_("putpkt: write failed"));
if (rs->noack_mode)
break;
- /* Read until either a timeout occurs (-2) or '+' is read. */
+ /* Read until either a timeout occurs (-2) or '+' is read.
+ Handle any notification that arrives in the mean time. */
while (1)
{
ch = readchar (remote_timeout);
case '-':
case SERIAL_TIMEOUT:
case '$':
+ case '%':
if (started_error_output)
{
putchar_unfiltered ('\n');
serial_write (remote_desc, "+", 1);
continue; /* Now, go look for +. */
}
+
+ case '%':
+ {
+ int val;
+
+ /* If we got a notification, handle it, and go back to looking
+ for an ack. */
+ /* We've found the start of a notification. Now
+ collect the data. */
+ val = read_frame (&rs->buf, &rs->buf_size);
+ if (val >= 0)
+ {
+ if (remote_debug)
+ {
+ struct cleanup *old_chain;
+ char *str;
+
+ str = escape_buffer (rs->buf, val);
+ old_chain = make_cleanup (xfree, str);
+ fprintf_unfiltered (gdb_stdlog,
+ " Notification received: %s\n",
+ str);
+ do_cleanups (old_chain);
+ }
+ handle_notification (rs->buf, val);
+ /* We're in sync now, rewait for the ack. */
+ tcount = 0;
+ }
+ else
+ {
+ if (remote_debug)
+ {
+ if (!started_error_output)
+ {
+ started_error_output = 1;
+ fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
+ }
+ fputc_unfiltered (ch & 0177, gdb_stdlog);
+ fprintf_unfiltered (gdb_stdlog, "%s", rs->buf);
+ }
+ }
+ continue;
+ }
+ /* fall-through */
default:
if (remote_debug)
{
if (remote_debug)
{
- fprintf_filtered (gdb_stdlog,
- "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
- pktcsum, csum);
- fputstrn_filtered (buf, bc, 0, gdb_stdlog);
- fputs_filtered ("\n", gdb_stdlog);
+ struct cleanup *old_chain;
+ char *str;
+
+ str = escape_buffer (buf, bc);
+ old_chain = make_cleanup (xfree, str);
+ fprintf_unfiltered (gdb_stdlog,
+ "\
+Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
+ pktcsum, csum, str);
+ do_cleanups (old_chain);
}
/* Number of characters in buffer ignoring trailing
NULL. */
rather than timing out; this is used (in synchronous mode) to wait
for a target that is is executing user code to stop. If FOREVER ==
0, this function is allowed to time out gracefully and return an
- indication of this to the caller. Otherwise return the number
- of bytes read. */
+ indication of this to the caller. Otherwise return the number of
+ bytes read. If EXPECTING_NOTIF, consider receiving a notification
+ enough reason to return to the caller. */
+
static int
-getpkt_sane (char **buf, long *sizeof_buf, int forever)
+getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever,
+ int expecting_notif)
{
struct remote_state *rs = get_remote_state ();
int c;
int tries;
int timeout;
- int val;
+ int val = -1;
/* We're reading a new response. Make sure we don't look at a
previously cached response. */
strcpy (*buf, "timeout");
if (forever)
- {
- timeout = watchdog > 0 ? watchdog : -1;
- }
-
+ timeout = watchdog > 0 ? watchdog : -1;
+ else if (expecting_notif)
+ timeout = 0; /* There should already be a char in the buffer. If
+ not, bail out. */
else
timeout = remote_timeout;
#define MAX_TRIES 3
- for (tries = 1; tries <= MAX_TRIES; tries++)
+ /* Process any number of notifications, and then return when
+ we get a packet. */
+ for (;;)
{
- /* This can loop forever if the remote side sends us characters
- continuously, but if it pauses, we'll get a zero from
- readchar because of timeout. Then we'll count that as a
- retry. */
-
- /* Note that we will only wait forever prior to the start of a
- packet. After that, we expect characters to arrive at a
- brisk pace. They should show up within remote_timeout
- intervals. */
-
- do
+ /* If we get a timeout or bad checksm, retry up to MAX_TRIES
+ times. */
+ for (tries = 1; tries <= MAX_TRIES; tries++)
{
- c = readchar (timeout);
+ /* This can loop forever if the remote side sends us
+ characters continuously, but if it pauses, we'll get
+ SERIAL_TIMEOUT from readchar because of timeout. Then
+ we'll count that as a retry.
+
+ Note that even when forever is set, we will only wait
+ forever prior to the start of a packet. After that, we
+ expect characters to arrive at a brisk pace. They should
+ show up within remote_timeout intervals. */
+ do
+ c = readchar (timeout);
+ while (c != SERIAL_TIMEOUT && c != '$' && c != '%');
if (c == SERIAL_TIMEOUT)
{
+ if (expecting_notif)
+ return -1; /* Don't complain, it's normal to not get
+ anything in this case. */
+
if (forever) /* Watchdog went off? Kill the target. */
{
QUIT;
- target_mourn_inferior ();
+ pop_target ();
error (_("Watchdog timeout has expired. Target detached."));
}
if (remote_debug)
fputs_filtered ("Timed out.\n", gdb_stdlog);
- goto retry;
}
+ else
+ {
+ /* We've found the start of a packet or notification.
+ Now collect the data. */
+ val = read_frame (buf, sizeof_buf);
+ if (val >= 0)
+ break;
+ }
+
+ serial_write (remote_desc, "-", 1);
}
- while (c != '$');
- /* We've found the start of a packet, now collect the data. */
+ if (tries > MAX_TRIES)
+ {
+ /* We have tried hard enough, and just can't receive the
+ packet/notification. Give up. */
+ printf_unfiltered (_("Ignoring packet error, continuing...\n"));
- val = read_frame (buf, sizeof_buf);
+ /* Skip the ack char if we're in no-ack mode. */
+ if (!rs->noack_mode)
+ serial_write (remote_desc, "+", 1);
+ return -1;
+ }
- if (val >= 0)
+ /* If we got an ordinary packet, return that to our caller. */
+ if (c == '$')
{
if (remote_debug)
{
- fprintf_unfiltered (gdb_stdlog, "Packet received: ");
- fputstrn_unfiltered (*buf, val, 0, gdb_stdlog);
- fprintf_unfiltered (gdb_stdlog, "\n");
+ struct cleanup *old_chain;
+ char *str;
+
+ str = escape_buffer (*buf, val);
+ old_chain = make_cleanup (xfree, str);
+ fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str);
+ do_cleanups (old_chain);
}
/* Skip the ack char if we're in no-ack mode. */
return val;
}
- /* Try the whole thing again. */
- retry:
- /* Skip the nack char if we're in no-ack mode. */
- if (!rs->noack_mode)
- serial_write (remote_desc, "-", 1);
- }
+ /* If we got a notification, handle it, and go back to looking
+ for a packet. */
+ else
+ {
+ gdb_assert (c == '%');
- /* We have tried hard enough, and just can't receive the packet.
- Give up. */
+ if (remote_debug)
+ {
+ struct cleanup *old_chain;
+ char *str;
- printf_unfiltered (_("Ignoring packet error, continuing...\n"));
+ str = escape_buffer (*buf, val);
+ old_chain = make_cleanup (xfree, str);
+ fprintf_unfiltered (gdb_stdlog,
+ " Notification received: %s\n",
+ str);
+ do_cleanups (old_chain);
+ }
- /* Skip the ack char if we're in no-ack mode. */
- if (!rs->noack_mode)
- serial_write (remote_desc, "+", 1);
- return -1;
+ handle_notification (*buf, val);
+
+ /* Notifications require no acknowledgement. */
+
+ if (expecting_notif)
+ return -1;
+ }
+ }
+}
+
+static int
+getpkt_sane (char **buf, long *sizeof_buf, int forever)
+{
+ return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0);
+}
+
+static int
+getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever)
+{
+ return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1);
}
+
\f
static void
-remote_kill (void)
+remote_kill (struct target_ops *ops)
{
- /* Unregister the file descriptor from the event loop. */
- if (target_is_async_p ())
- serial_async (remote_desc, NULL, 0);
-
/* Use catch_errors so the user can quit from gdb even when we
aren't on speaking terms with the remote system. */
catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR);
target_mourn_inferior ();
}
+static int
+remote_vkill (int pid, struct remote_state *rs)
+{
+ if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE)
+ return -1;
+
+ /* Tell the remote target to detach. */
+ sprintf (rs->buf, "vKill;%x", pid);
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
+
+ if (packet_ok (rs->buf,
+ &remote_protocol_packets[PACKET_vKill]) == PACKET_OK)
+ return 0;
+ else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE)
+ return -1;
+ else
+ return 1;
+}
+
+static void
+extended_remote_kill (struct target_ops *ops)
+{
+ int res;
+ int pid = ptid_get_pid (inferior_ptid);
+ struct remote_state *rs = get_remote_state ();
+
+ res = remote_vkill (pid, rs);
+ if (res == -1 && !remote_multi_process_p (rs))
+ {
+ /* Don't try 'k' on a multi-process aware stub -- it has no way
+ to specify the pid. */
+
+ putpkt ("k");
+#if 0
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (rs->buf[0] != 'O' || rs->buf[0] != 'K')
+ res = 1;
+#else
+ /* Don't wait for it to die. I'm not really sure it matters whether
+ we do or not. For the existing stubs, kill is a noop. */
+ res = 0;
+#endif
+ }
+
+ if (res != 0)
+ error (_("Can't kill process"));
+
+ target_mourn_inferior ();
+}
+
static void
-remote_mourn (void)
+remote_mourn (struct target_ops *ops)
{
- remote_mourn_1 (&remote_ops);
+ remote_mourn_1 (ops);
}
/* Worker function for remote_mourn. */
remote_mourn_1 (struct target_ops *target)
{
unpush_target (target);
+
+ /* remote_close takes care of doing most of the clean up. */
generic_mourn_inferior ();
}
{
struct remote_state *rs = get_remote_state ();
+ /* In case we got here due to an error, but we're going to stay
+ connected. */
+ rs->waiting_for_stop_reply = 0;
+
+ /* We're no longer interested in these events. */
+ discard_pending_stop_replies (ptid_get_pid (inferior_ptid));
+
+ /* If the current general thread belonged to the process we just
+ detached from or has exited, the remote side current general
+ thread becomes undefined. Considering a case like this:
+
+ - We just got here due to a detach.
+ - The process that we're detaching from happens to immediately
+ report a global breakpoint being hit in non-stop mode, in the
+ same thread we had selected before.
+ - GDB attaches to this process again.
+ - This event happens to be the next event we handle.
+
+ GDB would consider that the current general thread didn't need to
+ be set on the stub side (with Hg), since for all it knew,
+ GENERAL_THREAD hadn't changed.
+
+ Notice that although in all-stop mode, the remote server always
+ sets the current thread to the thread reporting the stop event,
+ that doesn't happen in non-stop mode; in non-stop, the stub *must
+ not* change the current thread when reporting a breakpoint hit,
+ due to the decoupling of event reporting and event handling.
+
+ To keep things simple, we always invalidate our notion of the
+ current thread. */
+ record_currthread (minus_one_ptid);
+
/* Unlike "target remote", we do not want to unpush the target; then
the next time the user says "run", we won't be connected. */
- /* Call common code to mark the inferior as not running. */
+ /* Call common code to mark the inferior as not running. */
generic_mourn_inferior ();
- /* Check whether the target is running now - some remote stubs
- automatically restart after kill. */
- putpkt ("?");
- getpkt (&rs->buf, &rs->buf_size, 0);
-
- if (rs->buf[0] == 'S' || rs->buf[0] == 'T')
- {
- /* Assume that the target has been restarted. Set inferior_ptid
- so that bits of core GDB realizes there's something here, e.g.,
- so that the user can say "kill" again. */
- inferior_ptid = remote_current_thread (magic_null_ptid);
- add_thread_silent (inferior_ptid);
- }
- else
+ if (!have_inferiors ())
{
- /* Mark this (still pushed) target as not executable until we
- restart it. */
- target_mark_exited (target);
+ if (!remote_multi_process_p (rs))
+ {
+ /* Check whether the target is running now - some remote stubs
+ automatically restart after kill. */
+ putpkt ("?");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+
+ if (rs->buf[0] == 'S' || rs->buf[0] == 'T')
+ {
+ /* Assume that the target has been restarted. Set inferior_ptid
+ so that bits of core GDB realizes there's something here, e.g.,
+ so that the user can say "kill" again. */
+ inferior_ptid = magic_null_ptid;
+ }
+ }
}
}
static void
-extended_remote_mourn (void)
+extended_remote_mourn (struct target_ops *ops)
{
- extended_remote_mourn_1 (&extended_remote_ops);
+ extended_remote_mourn_1 (ops);
}
static int
extended_remote_run (char *args)
{
struct remote_state *rs = get_remote_state ();
- char *p;
int len;
/* If the user has disabled vRun support, or we have detected that
error (_("Remote file name too long for run packet"));
len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0);
+ gdb_assert (args != NULL);
if (*args)
{
struct cleanup *back_to;
int i;
char **argv;
- argv = buildargv (args);
+ argv = gdb_buildargv (args);
back_to = make_cleanup ((void (*) (void *)) freeargv, argv);
for (i = 0; argv[i] != NULL; i++)
{
extended_remote_restart ();
}
- /* Clean up from the last time we ran, before we mark the target
- running again. This will mark breakpoints uninserted, and
- get_offsets may insert breakpoints. */
- init_thread_list ();
- init_wait_for_inferior ();
+ if (!have_inferiors ())
+ {
+ /* Clean up from the last time we ran, before we mark the target
+ running again. This will mark breakpoints uninserted, and
+ get_offsets may insert breakpoints. */
+ init_thread_list ();
+ init_wait_for_inferior ();
+ }
/* Now mark the inferior as running before we do anything else. */
- attach_flag = 0;
inferior_ptid = magic_null_ptid;
- add_thread_silent (inferior_ptid);
+ /* Now, if we have thread information, update inferior_ptid. */
+ inferior_ptid = remote_current_thread (inferior_ptid);
- target_mark_running (&extended_remote_ops);
+ remote_add_inferior (ptid_get_pid (inferior_ptid), 0);
+ add_thread_silent (inferior_ptid);
/* Get updated offsets, if the stub uses qOffsets. */
get_offsets ();
}
static void
-extended_remote_create_inferior (char *exec_file, char *args,
+extended_remote_create_inferior (struct target_ops *ops,
+ char *exec_file, char *args,
char **env, int from_tty)
{
extended_remote_create_inferior_1 (exec_file, args, env, from_tty);
which don't, we insert a traditional memory breakpoint. */
static int
-remote_insert_breakpoint (struct bp_target_info *bp_tgt)
+remote_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
/* Try the "Z" s/w breakpoint packet if it is not already disabled.
If it succeeds, then set the support to PACKET_ENABLE. If it
char *p;
int bpsize;
- gdbarch_breakpoint_from_pc (target_gdbarch, &addr, &bpsize);
+ gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize);
rs = get_remote_state ();
p = rs->buf;
}
}
- return memory_insert_breakpoint (bp_tgt);
+ return memory_insert_breakpoint (gdbarch, bp_tgt);
}
static int
-remote_remove_breakpoint (struct bp_target_info *bp_tgt)
+remote_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
CORE_ADDR addr = bp_tgt->placed_address;
struct remote_state *rs = get_remote_state ();
- int bp_size;
if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE)
{
return (rs->buf[0] == 'E');
}
- return memory_remove_breakpoint (bp_tgt);
+ return memory_remove_breakpoint (gdbarch, bp_tgt);
}
static int
enum Z_packet_type packet = watchpoint_to_Z_packet (type);
if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE)
- return -1;
+ return 1;
sprintf (rs->buf, "Z%x,", packet);
p = strchr (rs->buf, '\0');
switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
{
case PACKET_ERROR:
- case PACKET_UNKNOWN:
return -1;
+ case PACKET_UNKNOWN:
+ return 1;
case PACKET_OK:
return 0;
}
static int
remote_stopped_by_watchpoint (void)
{
- return remote_stopped_by_watchpoint_p;
+ return remote_stopped_by_watchpoint_p;
}
static int
static int
-remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
+remote_insert_hw_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
CORE_ADDR addr;
struct remote_state *rs;
/* The length field should be set to the size of a breakpoint
instruction, even though we aren't inserting one ourselves. */
- gdbarch_breakpoint_from_pc
- (target_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size);
+ gdbarch_remote_breakpoint_from_pc
+ (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size);
if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE)
return -1;
static int
-remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt)
+remote_remove_hw_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
CORE_ADDR addr;
struct remote_state *rs = get_remote_state ();
_("remote_remove_hw_breakpoint: reached end of function"));
}
-/* Some targets are only capable of doing downloads, and afterwards
- they switch to the remote serial protocol. This function provides
- a clean way to get from the download target to the remote target.
- It's basically just a wrapper so that we don't have to expose any
- of the internal workings of remote.c.
-
- Prior to calling this routine, you should shutdown the current
- target code, else you will get the "A program is being debugged
- already..." message. Usually a call to pop_target() suffices. */
-
-void
-push_remote_target (char *name, int from_tty)
-{
- printf_filtered (_("Switching to remote protocol\n"));
- remote_open (name, from_tty);
-}
-
/* Table used by the crc32 function to calcuate the checksum. */
static unsigned long crc32_table[256] =
{0, 0};
static unsigned long
-crc32 (unsigned char *buf, int len, unsigned int crc)
+crc32 (const unsigned char *buf, int len, unsigned int crc)
{
if (!crc32_table[1])
{
return crc;
}
+/* Verify memory using the "qCRC:" request. */
+
+static int
+remote_verify_memory (struct target_ops *ops,
+ const gdb_byte *data, CORE_ADDR lma, ULONGEST size)
+{
+ struct remote_state *rs = get_remote_state ();
+ unsigned long host_crc, target_crc;
+ char *tmp;
+
+ /* FIXME: assumes lma can fit into long. */
+ xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx",
+ (long) lma, (long) size);
+ putpkt (rs->buf);
+
+ /* Be clever; compute the host_crc before waiting for target
+ reply. */
+ host_crc = crc32 (data, size, 0xffffffff);
+
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ if (rs->buf[0] == 'E')
+ return -1;
+
+ if (rs->buf[0] != 'C')
+ error (_("remote target does not support this operation"));
+
+ for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++)
+ target_crc = target_crc * 16 + fromhex (*tmp);
+
+ return (host_crc == target_crc);
+}
+
/* compare-sections command
With no arguments, compares each loadable section in the exec bfd
with the same memory range on the target, and reports mismatches.
- Useful for verifying the image on the target against the exec file.
- Depends on the target understanding the new "qCRC:" request. */
-
-/* FIXME: cagney/1999-10-26: This command should be broken down into a
- target method (target verify memory) and generic version of the
- actual command. This will allow other high-level code (especially
- generic_load()) to make use of this target functionality. */
+ Useful for verifying the image on the target against the exec file. */
static void
compare_sections_command (char *args, int from_tty)
{
- struct remote_state *rs = get_remote_state ();
asection *s;
- unsigned long host_crc, target_crc;
- extern bfd *exec_bfd;
struct cleanup *old_chain;
- char *tmp;
char *sectdata;
const char *sectname;
bfd_size_type size;
bfd_vma lma;
int matched = 0;
int mismatched = 0;
+ int res;
if (!exec_bfd)
error (_("command cannot be used without an exec file"));
- if (!current_target.to_shortname ||
- strcmp (current_target.to_shortname, "remote") != 0)
- error (_("command can only be used with remote target"));
for (s = exec_bfd->sections; s; s = s->next)
{
matched = 1; /* do this section */
lma = s->lma;
- /* FIXME: assumes lma can fit into long. */
- xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx",
- (long) lma, (long) size);
- putpkt (rs->buf);
- /* Be clever; compute the host_crc before waiting for target
- reply. */
sectdata = xmalloc (size);
old_chain = make_cleanup (xfree, sectdata);
bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
- host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff);
- getpkt (&rs->buf, &rs->buf_size, 0);
- if (rs->buf[0] == 'E')
- error (_("target memory fault, section %s, range 0x%s -- 0x%s"),
- sectname, paddr (lma), paddr (lma + size));
- if (rs->buf[0] != 'C')
- error (_("remote target does not support this operation"));
-
- for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++)
- target_crc = target_crc * 16 + fromhex (*tmp);
-
- printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
- sectname, paddr (lma), paddr (lma + size));
- if (host_crc == target_crc)
+ res = target_verify_memory (sectdata, lma, size);
+
+ if (res == -1)
+ error (_("target memory fault, section %s, range %s -- %s"), sectname,
+ paddress (target_gdbarch, lma),
+ paddress (target_gdbarch, lma + size));
+
+ printf_filtered ("Section %s, range %s -- %s: ", sectname,
+ paddress (target_gdbarch, lma),
+ paddress (target_gdbarch, lma + size));
+ if (res)
printf_filtered ("matched.\n");
else
{
{
int i, buf_len;
ULONGEST n;
- gdb_byte *wbuf;
struct remote_state *rs = get_remote_state ();
int max_size = get_memory_write_packet_size ();
static ULONGEST finished_offset;
struct remote_state *rs = get_remote_state ();
- unsigned int total = 0;
LONGEST i, n, packet_len;
if (packet->support == PACKET_DISABLE)
const char *annex, gdb_byte *readbuf,
const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
- struct remote_state *rs = get_remote_state ();
+ struct remote_state *rs;
int i;
char *p2;
char query_type;
+ set_general_thread (inferior_ptid);
+
+ rs = get_remote_state ();
+
/* Handle memory using the standard memory routines. */
if (object == TARGET_OBJECT_MEMORY)
{
[PACKET_qXfer_spu_write]);
}
+ /* Handle extra signal info using qxfer packets. */
+ if (object == TARGET_OBJECT_SIGNAL_INFO)
+ {
+ if (readbuf)
+ return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len,
+ &remote_protocol_packets
+ [PACKET_qXfer_siginfo_read]);
+ else
+ return remote_write_qxfer (ops, "siginfo", annex, writebuf, offset, len,
+ &remote_protocol_packets
+ [PACKET_qXfer_siginfo_write]);
+ }
+
/* Only handle flash writes. */
if (writebuf != NULL)
{
return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len,
&remote_protocol_packets[PACKET_qXfer_memory_map]);
+ case TARGET_OBJECT_OSDATA:
+ /* Should only get here if we're connected. */
+ gdb_assert (remote_desc);
+ return remote_read_qxfer
+ (ops, "osdata", annex, readbuf, offset, len,
+ &remote_protocol_packets[PACKET_qXfer_osdata]);
+
+ case TARGET_OBJECT_THREADS:
+ gdb_assert (annex == NULL);
+ return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len,
+ &remote_protocol_packets[PACKET_qXfer_threads]);
+
default:
return -1;
}
const gdb_byte *pattern, ULONGEST pattern_len,
CORE_ADDR *found_addrp)
{
+ int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
struct remote_state *rs = get_remote_state ();
int max_size = get_memory_write_packet_size ();
struct packet_config *packet =
/* Insert header. */
i = snprintf (rs->buf, max_size,
"qSearch:memory:%s;%s;",
- paddr_nz (start_addr),
+ phex_nz (start_addr, addr_size),
phex_nz (search_space_len, sizeof (search_space_len)));
max_size -= (i + 1);
{
char *buf;
- /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */
+ /* XXX - see also remote_get_noisy_reply(). */
rs->buf[0] = '\0';
getpkt (&rs->buf, &rs->buf_size, 0);
buf = rs->buf;
buffer. */
static char *
-remote_pid_to_str (ptid_t ptid)
+remote_pid_to_str (struct target_ops *ops, ptid_t ptid)
{
static char buf[64];
+ struct remote_state *rs = get_remote_state ();
- if (ptid_equal (magic_null_ptid, ptid))
+ if (ptid_is_pid (ptid))
{
- xsnprintf (buf, sizeof buf, "Thread <main>");
- return buf;
+ /* Printing an inferior target id. */
+
+ /* When multi-process extensions are off, there's no way in the
+ remote protocol to know the remote process id, if there's any
+ at all. There's one exception --- when we're connected with
+ target extended-remote, and we manually attached to a process
+ with "attach PID". We don't record anywhere a flag that
+ allows us to distinguish that case from the case of
+ connecting with extended-remote and the stub already being
+ attached to a process, and reporting yes to qAttached, hence
+ no smart special casing here. */
+ if (!remote_multi_process_p (rs))
+ {
+ xsnprintf (buf, sizeof buf, "Remote target");
+ return buf;
+ }
+
+ return normal_pid_to_str (ptid);
}
- else if (ptid_get_tid (ptid) != 0)
+ else
{
- xsnprintf (buf, sizeof buf, "Thread %ld",
- ptid_get_tid (ptid));
+ if (ptid_equal (magic_null_ptid, ptid))
+ xsnprintf (buf, sizeof buf, "Thread <main>");
+ else if (remote_multi_process_p (rs))
+ xsnprintf (buf, sizeof buf, "Thread %d.%ld",
+ ptid_get_pid (ptid), ptid_get_tid (ptid));
+ else
+ xsnprintf (buf, sizeof buf, "Thread %ld",
+ ptid_get_tid (ptid));
return buf;
}
-
- return normal_pid_to_str (ptid);
}
/* Get the address of the thread local variable in OBJFILE which is
stored at OFFSET within the thread local storage for thread PTID. */
static CORE_ADDR
-remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)
+remote_get_thread_local_address (struct target_ops *ops,
+ ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)
{
if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE)
{
struct remote_state *rs = get_remote_state ();
char *p = rs->buf;
+ char *endp = rs->buf + get_remote_packet_size ();
enum packet_result result;
strcpy (p, "qGetTLSAddr:");
p += strlen (p);
- p += hexnumstr (p, ptid_get_tid (ptid));
+ p = write_ptid (p, endp, ptid);
*p++ = ',';
p += hexnumstr (p, offset);
*p++ = ',';
return 0;
}
+/* Provide thread local base, i.e. Thread Information Block address.
+ Returns 1 if ptid is found and thread_local_base is non zero. */
+
+int
+remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr)
+{
+ if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE)
+ {
+ struct remote_state *rs = get_remote_state ();
+ char *p = rs->buf;
+ char *endp = rs->buf + get_remote_packet_size ();
+ enum packet_result result;
+
+ strcpy (p, "qGetTIBAddr:");
+ p += strlen (p);
+ p = write_ptid (p, endp, ptid);
+ *p++ = '\0';
+
+ putpkt (rs->buf);
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ result = packet_ok (rs->buf,
+ &remote_protocol_packets[PACKET_qGetTIBAddr]);
+ if (result == PACKET_OK)
+ {
+ ULONGEST result;
+
+ unpack_varlen_hex (rs->buf, &result);
+ if (addr)
+ *addr = (CORE_ADDR) result;
+ return 1;
+ }
+ else if (result == PACKET_UNKNOWN)
+ error (_("Remote target doesn't support qGetTIBAddr packet"));
+ else
+ error (_("Remote target failed to process qGetTIBAddr request"));
+ }
+ else
+ error (_("qGetTIBAddr not supported or disabled on this target"));
+ /* Not reached. */
+ return 0;
+}
+
/* Support for inferring a target description based on the current
architecture and the size of a 'g' packet. While the 'g' packet
can have any size (since optional registers can be left off the
VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess);
}
+/* Return 1 if remote_read_description would do anything on this target
+ and architecture, 0 otherwise. */
+
+static int
+remote_read_description_p (struct target_ops *target)
+{
+ struct remote_g_packet_data *data
+ = gdbarch_data (target_gdbarch, remote_g_packet_data_handle);
+
+ if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
+ return 1;
+
+ return 0;
+}
+
static const struct target_desc *
remote_read_description (struct target_ops *target)
{
struct remote_g_packet_data *data
= gdbarch_data (target_gdbarch, remote_g_packet_data_handle);
+ /* Do not try this during initial connection, when we do not know
+ whether there is a running but stopped thread. */
+ if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid))
+ return NULL;
+
if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
{
struct remote_g_packet_guess *guess;
error (_("Remote I/O error: %s"), safe_strerror (host_error));
}
-static void
-fclose_cleanup (void *file)
-{
- fclose (file);
-}
-
static void
remote_hostio_close_cleanup (void *opaque)
{
file = fopen (local_file, "rb");
if (file == NULL)
perror_with_name (local_file);
- back_to = make_cleanup (fclose_cleanup, file);
+ back_to = make_cleanup_fclose (file);
fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT
| FILEIO_O_TRUNC),
remote_file_get (const char *remote_file, const char *local_file, int from_tty)
{
struct cleanup *back_to, *close_cleanup;
- int retcode, fd, remote_errno, bytes, io_size;
+ int fd, remote_errno, bytes, io_size;
FILE *file;
gdb_byte *buffer;
ULONGEST offset;
file = fopen (local_file, "wb");
if (file == NULL)
perror_with_name (local_file);
- back_to = make_cleanup (fclose_cleanup, file);
+ back_to = make_cleanup_fclose (file);
/* Send up to this many bytes at once. They won't all fit in the
remote packet limit, so we'll transfer slightly fewer. */
struct cleanup *back_to;
char **argv;
- argv = buildargv (args);
- if (argv == NULL)
- nomem (0);
+ if (args == NULL)
+ error_no_arg (_("file to put"));
+
+ argv = gdb_buildargv (args);
back_to = make_cleanup_freeargv (argv);
if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
error (_("Invalid parameters to remote put"));
struct cleanup *back_to;
char **argv;
- argv = buildargv (args);
- if (argv == NULL)
- nomem (0);
+ if (args == NULL)
+ error_no_arg (_("file to get"));
+
+ argv = gdb_buildargv (args);
back_to = make_cleanup_freeargv (argv);
if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
error (_("Invalid parameters to remote get"));
struct cleanup *back_to;
char **argv;
- argv = buildargv (args);
- if (argv == NULL)
- nomem (0);
+ if (args == NULL)
+ error_no_arg (_("file to delete"));
+
+ argv = gdb_buildargv (args);
back_to = make_cleanup_freeargv (argv);
if (argv[0] == NULL || argv[1] != NULL)
error (_("Invalid parameters to remote delete"));
help_list (remote_cmdlist, "remote ", -1, gdb_stdout);
}
-static void
-init_remote_ops (void)
+static int
+remote_can_execute_reverse (void)
{
- remote_ops.to_shortname = "remote";
- remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
- remote_ops.to_doc =
- "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
+ if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE
+ || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE)
+ return 1;
+ else
+ return 0;
+}
+
+static int
+remote_supports_non_stop (void)
+{
+ return 1;
+}
+
+static int
+remote_supports_multi_process (void)
+{
+ struct remote_state *rs = get_remote_state ();
+ return remote_multi_process_p (rs);
+}
+
+int
+remote_supports_cond_tracepoints (void)
+{
+ struct remote_state *rs = get_remote_state ();
+ return rs->cond_tracepoints;
+}
+
+int
+remote_supports_fast_tracepoints (void)
+{
+ struct remote_state *rs = get_remote_state ();
+ return rs->fast_tracepoints;
+}
+
+static void
+remote_trace_init (void)
+{
+ putpkt ("QTinit");
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (strcmp (target_buf, "OK") != 0)
+ error (_("Target does not support this command."));
+}
+
+static void free_actions_list (char **actions_list);
+static void free_actions_list_cleanup_wrapper (void *);
+static void
+free_actions_list_cleanup_wrapper (void *al)
+{
+ free_actions_list (al);
+}
+
+static void
+free_actions_list (char **actions_list)
+{
+ int ndx;
+
+ if (actions_list == 0)
+ return;
+
+ for (ndx = 0; actions_list[ndx]; ndx++)
+ xfree (actions_list[ndx]);
+
+ xfree (actions_list);
+}
+
+/* Recursive routine to walk through command list including loops, and
+ download packets for each command. */
+
+static void
+remote_download_command_source (int num, ULONGEST addr,
+ struct command_line *cmds)
+{
+ struct remote_state *rs = get_remote_state ();
+ struct command_line *cmd;
+
+ for (cmd = cmds; cmd; cmd = cmd->next)
+ {
+ QUIT; /* allow user to bail out with ^C */
+ strcpy (rs->buf, "QTDPsrc:");
+ encode_source_string (num, addr, "cmd", cmd->line,
+ rs->buf + strlen (rs->buf),
+ rs->buf_size - strlen (rs->buf));
+ putpkt (rs->buf);
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ warning (_("Target does not support source download."));
+
+ if (cmd->control_type == while_control
+ || cmd->control_type == while_stepping_control)
+ {
+ remote_download_command_source (num, addr, *cmd->body_list);
+
+ QUIT; /* allow user to bail out with ^C */
+ strcpy (rs->buf, "QTDPsrc:");
+ encode_source_string (num, addr, "cmd", "end",
+ rs->buf + strlen (rs->buf),
+ rs->buf_size - strlen (rs->buf));
+ putpkt (rs->buf);
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ warning (_("Target does not support source download."));
+ }
+ }
+}
+
+static void
+remote_download_tracepoint (struct breakpoint *t)
+{
+ struct bp_location *loc;
+ CORE_ADDR tpaddr;
+ char addrbuf[40];
+ char buf[2048];
+ char **tdp_actions;
+ char **stepping_actions;
+ int ndx;
+ struct cleanup *old_chain = NULL;
+ struct agent_expr *aexpr;
+ struct cleanup *aexpr_chain = NULL;
+ char *pkt;
+
+ /* Iterate over all the tracepoint locations. It's up to the target to
+ notice multiple tracepoint packets with the same number but different
+ addresses, and treat them as multiple locations. */
+ for (loc = t->loc; loc; loc = loc->next)
+ {
+ encode_actions (t, loc, &tdp_actions, &stepping_actions);
+ old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
+ tdp_actions);
+ (void) make_cleanup (free_actions_list_cleanup_wrapper, stepping_actions);
+
+ tpaddr = loc->address;
+ sprintf_vma (addrbuf, tpaddr);
+ sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number,
+ addrbuf, /* address */
+ (t->enable_state == bp_enabled ? 'E' : 'D'),
+ t->step_count, t->pass_count);
+ /* Fast tracepoints are mostly handled by the target, but we can
+ tell the target how big of an instruction block should be moved
+ around. */
+ if (t->type == bp_fast_tracepoint)
+ {
+ /* Only test for support at download time; we may not know
+ target capabilities at definition time. */
+ if (remote_supports_fast_tracepoints ())
+ {
+ int isize;
+
+ if (gdbarch_fast_tracepoint_valid_at (target_gdbarch,
+ tpaddr, &isize, NULL))
+ sprintf (buf + strlen (buf), ":F%x", isize);
+ else
+ /* If it passed validation at definition but fails now,
+ something is very wrong. */
+ internal_error (__FILE__, __LINE__,
+ "Fast tracepoint not valid during download");
+ }
+ else
+ /* Fast tracepoints are functionally identical to regular
+ tracepoints, so don't take lack of support as a reason to
+ give up on the trace run. */
+ warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t->number);
+ }
+ /* If the tracepoint has a conditional, make it into an agent
+ expression and append to the definition. */
+ if (loc->cond)
+ {
+ /* Only test support at download time, we may not know target
+ capabilities at definition time. */
+ if (remote_supports_cond_tracepoints ())
+ {
+ aexpr = gen_eval_for_expr (tpaddr, loc->cond);
+ aexpr_chain = make_cleanup_free_agent_expr (aexpr);
+ sprintf (buf + strlen (buf), ":X%x,", aexpr->len);
+ pkt = buf + strlen (buf);
+ for (ndx = 0; ndx < aexpr->len; ++ndx)
+ pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
+ *pkt = '\0';
+ do_cleanups (aexpr_chain);
+ }
+ else
+ warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t->number);
+ }
+
+ if (t->commands || *default_collect)
+ strcat (buf, "-");
+ putpkt (buf);
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ error (_("Target does not support tracepoints."));
+
+ /* do_single_steps (t); */
+ if (tdp_actions)
+ {
+ for (ndx = 0; tdp_actions[ndx]; ndx++)
+ {
+ QUIT; /* allow user to bail out with ^C */
+ sprintf (buf, "QTDP:-%x:%s:%s%c",
+ t->number, addrbuf, /* address */
+ tdp_actions[ndx],
+ ((tdp_actions[ndx + 1] || stepping_actions)
+ ? '-' : 0));
+ putpkt (buf);
+ remote_get_noisy_reply (&target_buf,
+ &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ error (_("Error on target while setting tracepoints."));
+ }
+ }
+ if (stepping_actions)
+ {
+ for (ndx = 0; stepping_actions[ndx]; ndx++)
+ {
+ QUIT; /* allow user to bail out with ^C */
+ sprintf (buf, "QTDP:-%x:%s:%s%s%s",
+ t->number, addrbuf, /* address */
+ ((ndx == 0) ? "S" : ""),
+ stepping_actions[ndx],
+ (stepping_actions[ndx + 1] ? "-" : ""));
+ putpkt (buf);
+ remote_get_noisy_reply (&target_buf,
+ &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ error (_("Error on target while setting tracepoints."));
+ }
+ }
+
+ if (remote_protocol_packets[PACKET_TracepointSource].support == PACKET_ENABLE)
+ {
+ if (t->addr_string)
+ {
+ strcpy (buf, "QTDPsrc:");
+ encode_source_string (t->number, loc->address,
+ "at", t->addr_string, buf + strlen (buf),
+ 2048 - strlen (buf));
+
+ putpkt (buf);
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ warning (_("Target does not support source download."));
+ }
+ if (t->cond_string)
+ {
+ strcpy (buf, "QTDPsrc:");
+ encode_source_string (t->number, loc->address,
+ "cond", t->cond_string, buf + strlen (buf),
+ 2048 - strlen (buf));
+ putpkt (buf);
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (strcmp (target_buf, "OK"))
+ warning (_("Target does not support source download."));
+ }
+ remote_download_command_source (t->number, loc->address,
+ breakpoint_commands (t));
+ }
+
+ do_cleanups (old_chain);
+ }
+}
+
+static void
+remote_download_trace_state_variable (struct trace_state_variable *tsv)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *p;
+
+ sprintf (rs->buf, "QTDV:%x:%s:%x:",
+ tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin);
+ p = rs->buf + strlen (rs->buf);
+ if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ())
+ error (_("Trace state variable name too long for tsv definition packet"));
+ p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0);
+ *p++ = '\0';
+ putpkt (rs->buf);
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (*target_buf == '\0')
+ error (_("Target does not support this command."));
+ if (strcmp (target_buf, "OK") != 0)
+ error (_("Error on target while downloading trace state variable."));
+}
+
+static void
+remote_trace_set_readonly_regions (void)
+{
+ asection *s;
+ bfd_size_type size;
+ bfd_vma lma;
+ int anysecs = 0;
+
+ if (!exec_bfd)
+ return; /* No information to give. */
+
+ strcpy (target_buf, "QTro");
+ for (s = exec_bfd->sections; s; s = s->next)
+ {
+ char tmp1[40], tmp2[40];
+
+ if ((s->flags & SEC_LOAD) == 0 ||
+ /* (s->flags & SEC_CODE) == 0 || */
+ (s->flags & SEC_READONLY) == 0)
+ continue;
+
+ anysecs = 1;
+ lma = s->lma;
+ size = bfd_get_section_size (s);
+ sprintf_vma (tmp1, lma);
+ sprintf_vma (tmp2, lma + size);
+ sprintf (target_buf + strlen (target_buf),
+ ":%s,%s", tmp1, tmp2);
+ }
+ if (anysecs)
+ {
+ putpkt (target_buf);
+ getpkt (&target_buf, &target_buf_size, 0);
+ }
+}
+
+static void
+remote_trace_start (void)
+{
+ putpkt ("QTStart");
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (*target_buf == '\0')
+ error (_("Target does not support this command."));
+ if (strcmp (target_buf, "OK") != 0)
+ error (_("Bogus reply from target: %s"), target_buf);
+}
+
+static int
+remote_get_trace_status (struct trace_status *ts)
+{
+ char *p, *p1, *p_temp;
+ ULONGEST val;
+ /* FIXME we need to get register block size some other way */
+ extern int trace_regblock_size;
+ trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet;
+
+ putpkt ("qTStatus");
+ p = remote_get_noisy_reply (&target_buf, &target_buf_size);
+
+ /* If the remote target doesn't do tracing, flag it. */
+ if (*p == '\0')
+ return -1;
+
+ /* We're working with a live target. */
+ ts->from_file = 0;
+
+ /* Set some defaults. */
+ ts->running_known = 0;
+ ts->stop_reason = trace_stop_reason_unknown;
+ ts->traceframe_count = -1;
+ ts->buffer_free = 0;
+
+ if (*p++ != 'T')
+ error (_("Bogus trace status reply from target: %s"), target_buf);
+
+ parse_trace_status (p, ts);
+
+ return ts->running;
+}
+
+static void
+remote_trace_stop (void)
+{
+ putpkt ("QTStop");
+ remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (*target_buf == '\0')
+ error (_("Target does not support this command."));
+ if (strcmp (target_buf, "OK") != 0)
+ error (_("Bogus reply from target: %s"), target_buf);
+}
+
+static int
+remote_trace_find (enum trace_find_type type, int num,
+ ULONGEST addr1, ULONGEST addr2,
+ int *tpp)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *p, *reply;
+ int target_frameno = -1, target_tracept = -1;
+
+ p = rs->buf;
+ strcpy (p, "QTFrame:");
+ p = strchr (p, '\0');
+ switch (type)
+ {
+ case tfind_number:
+ sprintf (p, "%x", num);
+ break;
+ case tfind_pc:
+ sprintf (p, "pc:%s", phex_nz (addr1, 0));
+ break;
+ case tfind_tp:
+ sprintf (p, "tdp:%x", num);
+ break;
+ case tfind_range:
+ sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0));
+ break;
+ case tfind_outside:
+ sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0));
+ break;
+ default:
+ error ("Unknown trace find type %d", type);
+ }
+
+ putpkt (rs->buf);
+ reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt);
+ if (*reply == '\0')
+ error (_("Target does not support this command."));
+
+ while (reply && *reply)
+ switch (*reply)
+ {
+ case 'F':
+ p = ++reply;
+ target_frameno = (int) strtol (p, &reply, 16);
+ if (reply == p)
+ error (_("Unable to parse trace frame number"));
+ if (target_frameno == -1)
+ return -1;
+ break;
+ case 'T':
+ p = ++reply;
+ target_tracept = (int) strtol (p, &reply, 16);
+ if (reply == p)
+ error (_("Unable to parse tracepoint number"));
+ break;
+ case 'O': /* "OK"? */
+ if (reply[1] == 'K' && reply[2] == '\0')
+ reply += 2;
+ else
+ error (_("Bogus reply from target: %s"), reply);
+ break;
+ default:
+ error (_("Bogus reply from target: %s"), reply);
+ }
+ if (tpp)
+ *tpp = target_tracept;
+ return target_frameno;
+}
+
+static int
+remote_get_trace_state_variable_value (int tsvnum, LONGEST *val)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *reply;
+ ULONGEST uval;
+
+ sprintf (rs->buf, "qTV:%x", tsvnum);
+ putpkt (rs->buf);
+ reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (reply && *reply)
+ {
+ if (*reply == 'V')
+ {
+ unpack_varlen_hex (reply + 1, &uval);
+ *val = (LONGEST) uval;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int
+remote_save_trace_data (const char *filename)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *p, *reply;
+
+ p = rs->buf;
+ strcpy (p, "QTSave:");
+ p += strlen (p);
+ if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ())
+ error (_("Remote file name too long for trace save packet"));
+ p += 2 * bin2hex ((gdb_byte *) filename, p, 0);
+ *p++ = '\0';
+ putpkt (rs->buf);
+ reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (*reply != '\0')
+ error (_("Target does not support this command."));
+ if (strcmp (reply, "OK") != 0)
+ error (_("Bogus reply from target: %s"), reply);
+ return 0;
+}
+
+/* This is basically a memory transfer, but needs to be its own packet
+ because we don't know how the target actually organizes its trace
+ memory, plus we want to be able to ask for as much as possible, but
+ not be unhappy if we don't get as much as we ask for. */
+
+static LONGEST
+remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *reply;
+ char *p;
+ int rslt;
+
+ p = rs->buf;
+ strcpy (p, "qTBuffer:");
+ p += strlen (p);
+ p += hexnumstr (p, offset);
+ *p++ = ',';
+ p += hexnumstr (p, len);
+ *p++ = '\0';
+
+ putpkt (rs->buf);
+ reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (reply && *reply)
+ {
+ /* 'l' by itself means we're at the end of the buffer and
+ there is nothing more to get. */
+ if (*reply == 'l')
+ return 0;
+
+ /* Convert the reply into binary. Limit the number of bytes to
+ convert according to our passed-in buffer size, rather than
+ what was returned in the packet; if the target is
+ unexpectedly generous and gives us a bigger reply than we
+ asked for, we don't want to crash. */
+ rslt = hex2bin (target_buf, buf, len);
+ return rslt;
+ }
+
+ /* Something went wrong, flag as an error. */
+ return -1;
+}
+
+static void
+remote_set_disconnected_tracing (int val)
+{
+ struct remote_state *rs = get_remote_state ();
+
+ if (rs->disconnected_tracing)
+ {
+ char *reply;
+
+ sprintf (rs->buf, "QTDisconnected:%x", val);
+ putpkt (rs->buf);
+ reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (*reply == '\0')
+ error (_("Target does not support this command."));
+ if (strcmp (reply, "OK") != 0)
+ error (_("Bogus reply from target: %s"), reply);
+ }
+ else if (val)
+ warning (_("Target does not support disconnected tracing."));
+}
+
+static int
+remote_core_of_thread (struct target_ops *ops, ptid_t ptid)
+{
+ struct thread_info *info = find_thread_ptid (ptid);
+ if (info && info->private)
+ return info->private->core;
+ return -1;
+}
+
+static void
+remote_set_circular_trace_buffer (int val)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *reply;
+
+ sprintf (rs->buf, "QTBuffer:circular:%x", val);
+ putpkt (rs->buf);
+ reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
+ if (*reply == '\0')
+ error (_("Target does not support this command."));
+ if (strcmp (reply, "OK") != 0)
+ error (_("Bogus reply from target: %s"), reply);
+}
+
+static void
+init_remote_ops (void)
+{
+ remote_ops.to_shortname = "remote";
+ remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
+ remote_ops.to_doc =
+ "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
Specify the serial device it is connected to\n\
(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
remote_ops.to_open = remote_open;
remote_ops.to_find_new_threads = remote_threads_info;
remote_ops.to_pid_to_str = remote_pid_to_str;
remote_ops.to_extra_thread_info = remote_threads_extra_info;
+ remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid;
remote_ops.to_stop = remote_stop;
remote_ops.to_xfer_partial = remote_xfer_partial;
remote_ops.to_rcmd = remote_rcmd;
remote_ops.to_log_command = serial_log_command;
remote_ops.to_get_thread_local_address = remote_get_thread_local_address;
remote_ops.to_stratum = process_stratum;
- remote_ops.to_has_all_memory = 1;
- remote_ops.to_has_memory = 1;
- remote_ops.to_has_stack = 1;
- remote_ops.to_has_registers = 1;
- remote_ops.to_has_execution = 1;
+ remote_ops.to_has_all_memory = default_child_has_all_memory;
+ remote_ops.to_has_memory = default_child_has_memory;
+ remote_ops.to_has_stack = default_child_has_stack;
+ remote_ops.to_has_registers = default_child_has_registers;
+ remote_ops.to_has_execution = default_child_has_execution;
remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
+ remote_ops.to_can_execute_reverse = remote_can_execute_reverse;
remote_ops.to_magic = OPS_MAGIC;
remote_ops.to_memory_map = remote_memory_map;
remote_ops.to_flash_erase = remote_flash_erase;
remote_ops.to_async_mask = remote_async_mask;
remote_ops.to_terminal_inferior = remote_terminal_inferior;
remote_ops.to_terminal_ours = remote_terminal_ours;
+ remote_ops.to_supports_non_stop = remote_supports_non_stop;
+ remote_ops.to_supports_multi_process = remote_supports_multi_process;
+ remote_ops.to_trace_init = remote_trace_init;
+ remote_ops.to_download_tracepoint = remote_download_tracepoint;
+ remote_ops.to_download_trace_state_variable = remote_download_trace_state_variable;
+ remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions;
+ remote_ops.to_trace_start = remote_trace_start;
+ remote_ops.to_get_trace_status = remote_get_trace_status;
+ remote_ops.to_trace_stop = remote_trace_stop;
+ remote_ops.to_trace_find = remote_trace_find;
+ remote_ops.to_get_trace_state_variable_value = remote_get_trace_state_variable_value;
+ remote_ops.to_save_trace_data = remote_save_trace_data;
+ remote_ops.to_upload_tracepoints = remote_upload_tracepoints;
+ remote_ops.to_upload_trace_state_variables = remote_upload_trace_state_variables;
+ remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data;
+ remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing;
+ remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer;
+ remote_ops.to_core_of_thread = remote_core_of_thread;
+ remote_ops.to_verify_memory = remote_verify_memory;
+ remote_ops.to_get_tib_address = remote_get_tib_address;
}
/* Set up the extended remote vector by making a copy of the standard
extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
extended_remote_ops.to_detach = extended_remote_detach;
extended_remote_ops.to_attach = extended_remote_attach;
+ extended_remote_ops.to_kill = extended_remote_kill;
}
static int
async_client_callback (INF_REG_EVENT, async_client_context);
}
+static void
+remote_async_inferior_event_handler (gdb_client_data data)
+{
+ inferior_event_handler (INF_REG_EVENT, NULL);
+}
+
+static void
+remote_async_get_pending_events_handler (gdb_client_data data)
+{
+ remote_get_pending_stop_replies ();
+}
+
static void
remote_async (void (*callback) (enum inferior_event_type event_type,
void *context), void *context)
remote_check_symbols (objfile);
}
+/* Pull all the tracepoints defined on the target and create local
+ data structures representing them. We don't want to create real
+ tracepoints yet, we don't want to mess up the user's existing
+ collection. */
+
+static int
+remote_upload_tracepoints (struct uploaded_tp **utpp)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *p;
+
+ /* Ask for a first packet of tracepoint definition. */
+ putpkt ("qTfP");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ p = rs->buf;
+ while (*p && *p != 'l')
+ {
+ parse_tracepoint_definition (p, utpp);
+ /* Ask for another packet of tracepoint definition. */
+ putpkt ("qTsP");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ p = rs->buf;
+ }
+ return 0;
+}
+
+static int
+remote_upload_trace_state_variables (struct uploaded_tsv **utsvp)
+{
+ struct remote_state *rs = get_remote_state ();
+ char *p;
+
+ /* Ask for a first packet of variable definition. */
+ putpkt ("qTfV");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ p = rs->buf;
+ while (*p && *p != 'l')
+ {
+ parse_tsv_definition (p, utsvp);
+ /* Ask for another packet of variable definition. */
+ putpkt ("qTsV");
+ getpkt (&rs->buf, &rs->buf_size, 0);
+ p = rs->buf;
+ }
+ return 0;
+}
+
void
_initialize_remote (void)
{
struct remote_state *rs;
+ struct cmd_list_element *cmd;
+ char *cmd_name;
/* architecture specific data */
remote_gdbarch_data_handle =
Set whether to send break if interrupted."), _("\
Show whether to send break if interrupted."), _("\
If set, a break, instead of a cntrl-c, is sent to the remote target."),
- NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */
+ set_remotebreak, show_remotebreak,
&setlist, &showlist);
+ cmd_name = "remotebreak";
+ cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1);
+ deprecate_cmd (cmd, "set remote interrupt-sequence");
+ cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */
+ cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1);
+ deprecate_cmd (cmd, "show remote interrupt-sequence");
+
+ add_setshow_enum_cmd ("interrupt-sequence", class_support,
+ interrupt_sequence_modes, &interrupt_sequence_mode, _("\
+Set interrupt sequence to remote target."), _("\
+Show interrupt sequence to remote target."), _("\
+Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
+ NULL, show_interrupt_sequence,
+ &remote_set_cmdlist,
+ &remote_show_cmdlist);
+
+ add_setshow_boolean_cmd ("interrupt-on-connect", class_support,
+ &interrupt_on_connect, _("\
+Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
+Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
+If set, interrupt sequence is sent to remote target."),
+ NULL, NULL,
+ &remote_set_cmdlist, &remote_show_cmdlist);
/* Install commands for configuring memory read/write packets. */
add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write],
"qXfer:spu:write", "write-spu-object", 0);
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata],
+ "qXfer:osdata:read", "osdata", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads],
+ "qXfer:threads:read", "threads", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read],
+ "qXfer:siginfo:read", "read-siginfo-object", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write],
+ "qXfer:siginfo:write", "write-siginfo-object", 0);
+
add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr],
"qGetTLSAddr", "get-thread-local-storage-address",
0);
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr],
+ "qGetTIBAddr", "get-thread-information-block-address",
+ 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_bc],
+ "bc", "reverse-continue", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_bs],
+ "bs", "reverse-step", 0);
+
add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported],
"qSupported", "supported-packets", 0);
add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode],
"QStartNoAckMode", "noack", 0);
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill],
+ "vKill", "kill", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached],
+ "qAttached", "query-attached", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints],
+ "ConditionalTracepoints", "conditional-tracepoints", 0);
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints],
+ "FastTracepoints", "fast-tracepoints", 0);
+
+ add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource],
+ "TracepointSource", "TracepointSource", 0);
+
/* Keep the old ``set remote Z-packet ...'' working. Each individual
Z sub-packet has its own set and show commands, but users may
have sets to this variable in their .gdbinit files (or in their
/* Take advantage of the fact that the LWP field is not used, to tag
special ptids with it set to != 0. */
- magic_null_ptid = ptid_build (0, 1, -1);
- not_sent_ptid = ptid_build (0, 1, -2);
- any_thread_ptid = ptid_build (0, 1, 0);
+ magic_null_ptid = ptid_build (42000, 1, -1);
+ not_sent_ptid = ptid_build (42000, 1, -2);
+ any_thread_ptid = ptid_build (42000, 1, 0);
+
+ target_buf_size = 2048;
+ target_buf = xmalloc (target_buf_size);
}
+
projects / thirdparty / binutils-gdb.git / blobdiff