/* Main code for remote server for GDB.
- Copyright (C) 1989-2020 Free Software Foundation, Inc.
+ Copyright (C) 1989-2022 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbsupport/selftest.h"
#include "gdbsupport/scope-exit.h"
+#include "gdbsupport/gdb_select.h"
+#include "gdbsupport/scoped_restore.h"
+#include "gdbsupport/search.h"
#define require_running_or_return(BUF) \
if (!target_running ()) \
/* Whether to report TARGET_WAITKIND_NO_RESUMED events. */
static bool report_no_resumed;
+/* The event loop checks this to decide whether to continue accepting
+ events. */
+static bool keep_processing_events = true;
+
bool non_stop;
static struct {
/* Put a stop reply to the stop reply queue. */
static void
-queue_stop_reply (ptid_t ptid, struct target_waitstatus *status)
+queue_stop_reply (ptid_t ptid, const target_waitstatus &status)
{
struct vstop_notif *new_notif = new struct vstop_notif;
new_notif->ptid = ptid;
- new_notif->status = *status;
+ new_notif->status = status;
notif_event_enque (¬if_stop, new_notif);
}
next = iter;
++next;
+ if (iter == notif_stop.queue.begin ())
+ {
+ /* The head of the list contains the notification that was
+ already sent to GDB. So we can't remove it, otherwise
+ when GDB sends the vStopped, it would ack the _next_
+ notification, which hadn't been sent yet! */
+ continue;
+ }
+
if (remove_all_on_match_ptid (*iter, ptid))
{
delete *iter;
{
struct vstop_notif *vstop = (struct vstop_notif *) event;
- prepare_resume_reply (own_buf, vstop->ptid, &vstop->status);
+ prepare_resume_reply (own_buf, vstop->ptid, vstop->status);
}
/* Helper for in_queued_stop_replies. */
return true;
/* Don't resume fork children that GDB does not know about yet. */
- if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED
- || vstop_event->status.kind == TARGET_WAITKIND_VFORKED)
- && vstop_event->status.value.related_pid.matches (filter_ptid))
+ if ((vstop_event->status.kind () == TARGET_WAITKIND_FORKED
+ || vstop_event->status.kind () == TARGET_WAITKIND_VFORKED)
+ && vstop_event->status.child_ptid ().matches (filter_ptid))
return true;
return false;
/* GDB knows to ignore the first SIGSTOP after attaching to a running
process using the "attach" command, but this is different; it's
just using "target remote". Pretend it's just starting up. */
- if (cs.last_status.kind == TARGET_WAITKIND_STOPPED
- && cs.last_status.value.sig == GDB_SIGNAL_STOP)
- cs.last_status.value.sig = GDB_SIGNAL_TRAP;
+ if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED
+ && cs.last_status.sig () == GDB_SIGNAL_STOP)
+ cs.last_status.set_stopped (GDB_SIGNAL_TRAP);
current_thread->last_resume_kind = resume_stop;
current_thread->last_status = cs.last_status;
error (_("Btrace already enabled."));
current_btrace_conf.format = BTRACE_FORMAT_BTS;
- thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf);
+ thread->btrace = target_enable_btrace (thread, ¤t_btrace_conf);
}
/* Handle btrace enabling in Intel Processor Trace format. */
error (_("Btrace already enabled."));
current_btrace_conf.format = BTRACE_FORMAT_PT;
- thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf);
+ thread->btrace = target_enable_btrace (thread, ¤t_btrace_conf);
}
/* Handle btrace disabling. */
return 1;
}
+/* Create the qMemTags packet reply given TAGS.
+
+ Returns true if parsing succeeded and false otherwise. */
+
+static bool
+create_fetch_memtags_reply (char *reply, const gdb::byte_vector &tags)
+{
+ /* It is an error to pass a zero-sized tag vector. */
+ gdb_assert (tags.size () != 0);
+
+ std::string packet ("m");
+
+ /* Write the tag data. */
+ packet += bin2hex (tags.data (), tags.size ());
+
+ /* Check if the reply is too big for the packet to handle. */
+ if (PBUFSIZ < packet.size ())
+ return false;
+
+ strcpy (reply, packet.c_str ());
+ return true;
+}
+
+/* Parse the QMemTags request into ADDR, LEN and TAGS.
+
+ Returns true if parsing succeeded and false otherwise. */
+
+static bool
+parse_store_memtags_request (char *request, CORE_ADDR *addr, size_t *len,
+ gdb::byte_vector &tags, int *type)
+{
+ gdb_assert (startswith (request, "QMemTags:"));
+
+ const char *p = request + strlen ("QMemTags:");
+
+ /* Read address and length. */
+ unsigned int length = 0;
+ p = decode_m_packet_params (p, addr, &length, ':');
+ *len = length;
+
+ /* Read the tag type. */
+ ULONGEST tag_type = 0;
+ p = unpack_varlen_hex (p, &tag_type);
+ *type = (int) tag_type;
+
+ /* Make sure there is a colon after the type. */
+ if (*p != ':')
+ return false;
+
+ /* Skip the colon. */
+ p++;
+
+ /* Read the tag data. */
+ tags = hex2bin (p);
+
+ return true;
+}
+
/* Handle all of the extended 'Q' packets. */
static void
std::string final_var = hex2str (p);
std::string var_name, var_value;
- if (remote_debug)
- {
- debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p);
- debug_printf (_("[Environment variable to be set: '%s']\n"),
- final_var.c_str ());
- debug_flush ();
- }
+ remote_debug_printf ("[QEnvironmentHexEncoded received '%s']", p);
+ remote_debug_printf ("[Environment variable to be set: '%s']",
+ final_var.c_str ());
size_t pos = final_var.find ('=');
if (pos == std::string::npos)
const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1;
std::string varname = hex2str (p);
- if (remote_debug)
- {
- debug_printf (_("[QEnvironmentUnset received '%s']\n"), p);
- debug_printf (_("[Environment variable to be unset: '%s']\n"),
- varname.c_str ());
- debug_flush ();
- }
+ remote_debug_printf ("[QEnvironmentUnset received '%s']", p);
+ remote_debug_printf ("[Environment variable to be unset: '%s']",
+ varname.c_str ());
our_environ.unset (varname.c_str ());
if (strcmp (own_buf, "QStartNoAckMode") == 0)
{
- if (remote_debug)
- {
- debug_printf ("[noack mode enabled]\n");
- debug_flush ();
- }
+ remote_debug_printf ("[noack mode enabled]");
cs.noack_mode = 1;
write_ok (own_buf);
non_stop = (req != 0);
- if (remote_debug)
- debug_printf ("[%s mode enabled]\n", req_str);
+ remote_debug_printf ("[%s mode enabled]", req_str);
write_ok (own_buf);
return;
unpack_varlen_hex (packet, &setting);
cs.disable_randomization = setting;
- if (remote_debug)
- {
- debug_printf (cs.disable_randomization
- ? "[address space randomization disabled]\n"
- : "[address space randomization enabled]\n");
- }
+ remote_debug_printf (cs.disable_randomization
+ ? "[address space randomization disabled]"
+ : "[address space randomization enabled]");
write_ok (own_buf);
return;
/* Update the flag. */
use_agent = req;
- if (remote_debug)
- debug_printf ("[%s agent]\n", req ? "Enable" : "Disable");
+ remote_debug_printf ("[%s agent]", req ? "Enable" : "Disable");
write_ok (own_buf);
return;
}
else
{
/* We don't know what this mode is, so complain to GDB. */
- sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n",
- mode);
+ std::string err
+ = string_printf ("E.Unknown thread-events mode requested: %s\n",
+ mode);
+ strcpy (own_buf, err.c_str ());
return;
}
cs.report_thread_events = (req == TRIBOOL_TRUE);
- if (remote_debug)
- {
- const char *req_str = cs.report_thread_events ? "enabled" : "disabled";
-
- debug_printf ("[thread events are now %s]\n", req_str);
- }
+ remote_debug_printf ("[thread events are now %s]\n",
+ cs.report_thread_events ? "enabled" : "disabled");
write_ok (own_buf);
return;
return;
}
- if (remote_debug)
- debug_printf (_("[Inferior will %s started with shell]"),
- startup_with_shell ? "be" : "not be");
+ remote_debug_printf ("[Inferior will %s started with shell]",
+ startup_with_shell ? "be" : "not be");
write_ok (own_buf);
return;
{
std::string path = hex2str (p);
- set_inferior_cwd (path.c_str ());
+ remote_debug_printf ("[Set the inferior's current directory to %s]",
+ path.c_str ());
- if (remote_debug)
- debug_printf (_("[Set the inferior's current directory to %s]\n"),
- path.c_str ());
+ set_inferior_cwd (std::move (path));
}
else
{
/* An empty argument means that we should clear out any
previously set cwd for the inferior. */
- set_inferior_cwd (NULL);
+ set_inferior_cwd ("");
- if (remote_debug)
- debug_printf (_("\
-[Unset the inferior's current directory; will use gdbserver's cwd]\n"));
+ remote_debug_printf ("[Unset the inferior's current directory; will "
+ "use gdbserver's cwd]");
}
write_ok (own_buf);
return;
}
+
+ /* Handle store memory tags packets. */
+ if (startswith (own_buf, "QMemTags:")
+ && target_supports_memory_tagging ())
+ {
+ gdb::byte_vector tags;
+ CORE_ADDR addr = 0;
+ size_t len = 0;
+ int type = 0;
+
+ require_running_or_return (own_buf);
+
+ bool ret = parse_store_memtags_request (own_buf, &addr, &len, tags,
+ &type);
+
+ if (ret)
+ ret = the_target->store_memtags (addr, len, tags, type);
+
+ if (!ret)
+ write_enn (own_buf);
+ else
+ write_ok (own_buf);
+
+ return;
+ }
+
/* Otherwise we didn't know what packet it was. Say we didn't
understand it. */
own_buf[0] = 0;
monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n");
monitor_output (" set remote-debug <0|1>\n");
monitor_output (" Enable remote protocol debugging messages\n");
+ monitor_output (" set event-loop-debug <0|1>\n");
+ monitor_output (" Enable event loop debugging messages\n");
monitor_output (" set debug-format option1[,option2,...]\n");
monitor_output (" Add additional information to debugging messages\n");
monitor_output (" Options: all, none");
}
}
-/* Subroutine of handle_search_memory to simplify it. */
-
-static int
-handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len,
- gdb_byte *pattern, unsigned pattern_len,
- gdb_byte *search_buf,
- unsigned chunk_size, unsigned search_buf_size,
- CORE_ADDR *found_addrp)
-{
- /* Prime the search buffer. */
-
- if (gdb_read_memory (start_addr, search_buf, search_buf_size)
- != search_buf_size)
- {
- warning ("Unable to access %ld bytes of target "
- "memory at 0x%lx, halting search.",
- (long) search_buf_size, (long) start_addr);
- return -1;
- }
-
- /* Perform the search.
-
- The loop is kept simple by allocating [N + pattern-length - 1] bytes.
- When we've scanned N bytes we copy the trailing bytes to the start and
- read in another N bytes. */
-
- while (search_space_len >= pattern_len)
- {
- gdb_byte *found_ptr;
- unsigned nr_search_bytes = (search_space_len < search_buf_size
- ? search_space_len
- : search_buf_size);
-
- found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern,
- pattern_len);
-
- if (found_ptr != NULL)
- {
- CORE_ADDR found_addr = start_addr + (found_ptr - search_buf);
- *found_addrp = found_addr;
- return 1;
- }
-
- /* Not found in this chunk, skip to next chunk. */
-
- /* Don't let search_space_len wrap here, it's unsigned. */
- if (search_space_len >= chunk_size)
- search_space_len -= chunk_size;
- else
- search_space_len = 0;
-
- if (search_space_len >= pattern_len)
- {
- unsigned keep_len = search_buf_size - chunk_size;
- CORE_ADDR read_addr = start_addr + chunk_size + keep_len;
- int nr_to_read;
-
- /* Copy the trailing part of the previous iteration to the front
- of the buffer for the next iteration. */
- memcpy (search_buf, search_buf + chunk_size, keep_len);
-
- nr_to_read = (search_space_len - keep_len < chunk_size
- ? search_space_len - keep_len
- : chunk_size);
-
- if (gdb_read_memory (read_addr, search_buf + keep_len,
- nr_to_read) != search_buf_size)
- {
- warning ("Unable to access %ld bytes of target memory "
- "at 0x%lx, halting search.",
- (long) nr_to_read, (long) read_addr);
- return -1;
- }
-
- start_addr += chunk_size;
- }
- }
-
- /* Not found. */
-
- return 0;
-}
-
/* Handle qSearch:memory packets. */
static void
CORE_ADDR search_space_len;
gdb_byte *pattern;
unsigned int pattern_len;
- /* NOTE: also defined in find.c testcase. */
-#define SEARCH_CHUNK_SIZE 16000
- const unsigned chunk_size = SEARCH_CHUNK_SIZE;
- /* Buffer to hold memory contents for searching. */
- gdb_byte *search_buf;
- unsigned search_buf_size;
int found;
CORE_ADDR found_addr;
int cmd_name_len = sizeof ("qSearch:memory:") - 1;
pattern = (gdb_byte *) malloc (packet_len);
if (pattern == NULL)
- {
- error ("Unable to allocate memory to perform the search");
- strcpy (own_buf, "E00");
- return;
- }
+ error ("Unable to allocate memory to perform the search");
+
if (decode_search_memory_packet (own_buf + cmd_name_len,
packet_len - cmd_name_len,
&start_addr, &search_space_len,
{
free (pattern);
error ("Error in parsing qSearch:memory packet");
- strcpy (own_buf, "E00");
- return;
}
- search_buf_size = chunk_size + pattern_len - 1;
-
- /* No point in trying to allocate a buffer larger than the search space. */
- if (search_space_len < search_buf_size)
- search_buf_size = search_space_len;
-
- search_buf = (gdb_byte *) malloc (search_buf_size);
- if (search_buf == NULL)
+ auto read_memory = [] (CORE_ADDR addr, gdb_byte *result, size_t len)
{
- free (pattern);
- error ("Unable to allocate memory to perform the search");
- strcpy (own_buf, "E00");
- return;
- }
+ return gdb_read_memory (addr, result, len) == len;
+ };
- found = handle_search_memory_1 (start_addr, search_space_len,
- pattern, pattern_len,
- search_buf, chunk_size, search_buf_size,
- &found_addr);
+ found = simple_search_memory (read_memory, start_addr, search_space_len,
+ pattern, pattern_len, &found_addr);
if (found > 0)
sprintf (own_buf, "1,%lx", (long) found_addr);
else
strcpy (own_buf, "E00");
- free (search_buf);
free (pattern);
}
pass signals down without informing GDB. */
if (!non_stop)
{
- if (debug_threads)
- debug_printf ("Forcing non-stop mode\n");
+ threads_debug_printf ("Forcing non-stop mode");
non_stop = true;
the_target->start_non_stop (true);
/* We'll need this after PROCESS has been destroyed. */
int pid = process->pid;
+ /* If this process has an unreported fork child, that child is not known to
+ GDB, so GDB won't take care of detaching it. We must do it here.
+
+ Here, we specifically don't want to use "safe iteration", as detaching
+ another process might delete the next thread in the iteration, which is
+ the one saved by the safe iterator. We will never delete the currently
+ iterated on thread, so standard iteration should be safe. */
+ for (thread_info *thread : all_threads)
+ {
+ /* Only threads that are of the process we are detaching. */
+ if (thread->id.pid () != pid)
+ continue;
+
+ /* Only threads that have a pending fork event. */
+ thread_info *child = target_thread_pending_child (thread);
+ if (child == nullptr)
+ continue;
+
+ process_info *fork_child_process = get_thread_process (child);
+ gdb_assert (fork_child_process != nullptr);
+
+ int fork_child_pid = fork_child_process->pid;
+
+ if (detach_inferior (fork_child_process) != 0)
+ warning (_("Failed to detach fork child %s, child of %s"),
+ target_pid_to_str (ptid_t (fork_child_pid)).c_str (),
+ target_pid_to_str (thread->id).c_str ());
+ }
+
if (detach_inferior (process) != 0)
write_enn (own_buf);
else
/* There is still at least one inferior remaining or
we are in extended mode, so don't terminate gdbserver,
and instead treat this like a normal program exit. */
- cs.last_status.kind = TARGET_WAITKIND_EXITED;
- cs.last_status.value.integer = 0;
+ cs.last_status.set_exited (0);
cs.last_ptid = ptid_t (pid);
- current_thread = NULL;
+ switch_to_thread (nullptr);
}
else
{
{
if (strcmp (mon, "set debug 1") == 0)
{
- debug_threads = 1;
+ debug_threads = true;
monitor_output ("Debug output enabled.\n");
}
else if (strcmp (mon, "set debug 0") == 0)
{
- debug_threads = 0;
+ debug_threads = false;
monitor_output ("Debug output disabled.\n");
}
else if (strcmp (mon, "set debug-hw-points 1") == 0)
}
else if (strcmp (mon, "set remote-debug 1") == 0)
{
- remote_debug = 1;
+ remote_debug = true;
monitor_output ("Protocol debug output enabled.\n");
}
else if (strcmp (mon, "set remote-debug 0") == 0)
{
- remote_debug = 0;
+ remote_debug = false;
monitor_output ("Protocol debug output disabled.\n");
}
+ else if (strcmp (mon, "set event-loop-debug 1") == 0)
+ {
+ debug_event_loop = debug_event_loop_kind::ALL;
+ monitor_output ("Event loop debug output enabled.\n");
+ }
+ else if (strcmp (mon, "set event-loop-debug 0") == 0)
+ {
+ debug_event_loop = debug_event_loop_kind::OFF;
+ monitor_output ("Event loop debug output disabled.\n");
+ }
else if (startswith (mon, "set debug-format "))
{
std::string error_msg
gdb_byte *readbuf, const gdb_byte *writebuf,
ULONGEST offset, LONGEST len)
{
- char *file;
ULONGEST pid;
int total_len;
if (pid <= 0)
return -1;
- file = the_target->pid_to_exec_file (pid);
+ const char *file = the_target->pid_to_exec_file (pid);
if (file == NULL)
return -1;
std::string document = "<library-list version=\"1.0\">\n";
- for (const dll_info &dll : all_dlls)
+ process_info *proc = current_process ();
+ for (const dll_info &dll : proc->all_dlls)
document += string_printf
(" <library name=\"%s\"><segment address=\"0x%s\"/></library>\n",
dll.name.c_str (), paddress (dll.base_addr));
gdb_byte *handle;
bool handle_status = target_thread_handle (ptid, &handle, &handle_len);
+ /* If this is a fork or vfork child (has a fork parent), GDB does not yet
+ know about this process, and must not know about it until it gets the
+ corresponding (v)fork event. Exclude this thread from the list. */
+ if (target_thread_pending_parent (thread) != nullptr)
+ return;
+
write_ptid (ptid_s, ptid);
buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s);
buffer_xml_printf (buffer, "/>\n");
}
-/* Helper for handle_qxfer_threads. */
+/* Helper for handle_qxfer_threads. Return true on success, false
+ otherwise. */
-static void
+static bool
handle_qxfer_threads_proper (struct buffer *buffer)
{
+ client_state &cs = get_client_state ();
+
+ scoped_restore_current_thread restore_thread;
+ scoped_restore save_current_general_thread
+ = make_scoped_restore (&cs.general_thread);
+
buffer_grow_str (buffer, "<threads>\n");
- for_each_thread ([&] (thread_info *thread)
+ process_info *error_proc = find_process ([&] (process_info *process)
{
- handle_qxfer_threads_worker (thread, buffer);
+ /* The target may need to access memory and registers (e.g. via
+ libthread_db) to fetch thread properties. Prepare for memory
+ access here, so that we potentially pause threads just once
+ for all accesses. Note that even if someday we stop needing
+ to pause threads to access memory, we will need to be able to
+ access registers, or other ptrace accesses like
+ PTRACE_GET_THREAD_AREA. */
+
+ /* Need to switch to each process in turn, because
+ prepare_to_access_memory prepares for an access in the
+ current process pointed to by general_thread. */
+ switch_to_process (process);
+ cs.general_thread = current_thread->id;
+
+ int res = prepare_to_access_memory ();
+ if (res == 0)
+ {
+ for_each_thread (process->pid, [&] (thread_info *thread)
+ {
+ handle_qxfer_threads_worker (thread, buffer);
+ });
+
+ done_accessing_memory ();
+ return false;
+ }
+ else
+ return true;
});
buffer_grow_str0 (buffer, "</threads>\n");
+ return error_proc == nullptr;
}
/* Handle qXfer:threads:read. */
buffer_init (&buffer);
- handle_qxfer_threads_proper (&buffer);
+ bool res = handle_qxfer_threads_proper (&buffer);
result = buffer_finish (&buffer);
result_length = strlen (result);
buffer_free (&buffer);
+
+ if (!res)
+ return -1;
}
if (offset >= result_length)
return (unsigned long long) crc;
}
+/* Parse the qMemTags packet request into ADDR and LEN. */
+
+static void
+parse_fetch_memtags_request (char *request, CORE_ADDR *addr, size_t *len,
+ int *type)
+{
+ gdb_assert (startswith (request, "qMemTags:"));
+
+ const char *p = request + strlen ("qMemTags:");
+
+ /* Read address and length. */
+ unsigned int length = 0;
+ p = decode_m_packet_params (p, addr, &length, ':');
+ *len = length;
+
+ /* Read the tag type. */
+ ULONGEST tag_type = 0;
+ p = unpack_varlen_hex (p, &tag_type);
+ *type = (int) tag_type;
+}
+
/* Add supported btrace packets to BUF. */
static void
if (strcmp ("qSymbol::", own_buf) == 0)
{
- struct thread_info *save_thread = current_thread;
+ scoped_restore_current_thread restore_thread;
/* For qSymbol, GDB only changes the current thread if the
previous current thread was of a different process. So if
exec in a non-leader thread. */
if (current_thread == NULL)
{
- current_thread
+ thread_info *any_thread
= find_any_thread_of_pid (cs.general_thread.pid ());
+ switch_to_thread (any_thread);
/* Just in case, if we didn't find a thread, then bail out
instead of crashing. */
if (current_thread == NULL)
{
write_enn (own_buf);
- current_thread = save_thread;
return;
}
}
if (current_thread != NULL)
the_target->look_up_symbols ();
- current_thread = save_thread;
-
strcpy (own_buf, "OK");
return;
}
';'. */
if (*p == ':')
{
- char **qsupported = NULL;
- int count = 0;
- int unknown = 0;
- int i;
+ std::vector<std::string> qsupported;
+ std::vector<const char *> unknowns;
/* Two passes, to avoid nested strtok calls in
target_process_qsupported. */
for (p = strtok_r (p + 1, ";", &saveptr);
p != NULL;
p = strtok_r (NULL, ";", &saveptr))
- {
- count++;
- qsupported = XRESIZEVEC (char *, qsupported, count);
- qsupported[count - 1] = xstrdup (p);
- }
+ qsupported.emplace_back (p);
- for (i = 0; i < count; i++)
+ for (const std::string &feature : qsupported)
{
- p = qsupported[i];
- if (strcmp (p, "multiprocess+") == 0)
+ if (feature == "multiprocess+")
{
/* GDB supports and wants multi-process support if
possible. */
if (target_supports_multi_process ())
cs.multi_process = 1;
}
- else if (strcmp (p, "qRelocInsn+") == 0)
+ else if (feature == "qRelocInsn+")
{
/* GDB supports relocate instruction requests. */
gdb_supports_qRelocInsn = 1;
}
- else if (strcmp (p, "swbreak+") == 0)
+ else if (feature == "swbreak+")
{
/* GDB wants us to report whether a trap is caused
by a software breakpoint and for us to handle PC
if (target_supports_stopped_by_sw_breakpoint ())
cs.swbreak_feature = 1;
}
- else if (strcmp (p, "hwbreak+") == 0)
+ else if (feature == "hwbreak+")
{
/* GDB wants us to report whether a trap is caused
by a hardware breakpoint. */
if (target_supports_stopped_by_hw_breakpoint ())
cs.hwbreak_feature = 1;
}
- else if (strcmp (p, "fork-events+") == 0)
+ else if (feature == "fork-events+")
{
/* GDB supports and wants fork events if possible. */
if (target_supports_fork_events ())
cs.report_fork_events = 1;
}
- else if (strcmp (p, "vfork-events+") == 0)
+ else if (feature == "vfork-events+")
{
/* GDB supports and wants vfork events if possible. */
if (target_supports_vfork_events ())
cs.report_vfork_events = 1;
}
- else if (strcmp (p, "exec-events+") == 0)
+ else if (feature == "exec-events+")
{
/* GDB supports and wants exec events if possible. */
if (target_supports_exec_events ())
cs.report_exec_events = 1;
}
- else if (strcmp (p, "vContSupported+") == 0)
+ else if (feature == "vContSupported+")
cs.vCont_supported = 1;
- else if (strcmp (p, "QThreadEvents+") == 0)
+ else if (feature == "QThreadEvents+")
;
- else if (strcmp (p, "no-resumed+") == 0)
+ else if (feature == "no-resumed+")
{
/* GDB supports and wants TARGET_WAITKIND_NO_RESUMED
events. */
report_no_resumed = true;
}
+ else if (feature == "memory-tagging+")
+ {
+ /* GDB supports memory tagging features. */
+ if (target_supports_memory_tagging ())
+ cs.memory_tagging_feature = true;
+ }
else
{
/* Move the unknown features all together. */
- qsupported[i] = NULL;
- qsupported[unknown] = p;
- unknown++;
+ unknowns.push_back (feature.c_str ());
}
}
/* Give the target backend a chance to process the unknown
features. */
- target_process_qsupported (qsupported, unknown);
-
- for (i = 0; i < count; i++)
- free (qsupported[i]);
- free (qsupported);
+ target_process_qsupported (unknowns);
}
sprintf (own_buf,
strcat (own_buf, ";no-resumed+");
+ if (target_supports_memory_tagging ())
+ strcat (own_buf, ";memory-tagging+");
+
/* Reinitialize components as needed for the new connection. */
hostio_handle_new_gdb_connection ();
target_handle_new_gdb_connection ();
if (target_supports_tracepoints () && handle_tracepoint_query (own_buf))
return;
+ /* Handle fetch memory tags packets. */
+ if (startswith (own_buf, "qMemTags:")
+ && target_supports_memory_tagging ())
+ {
+ gdb::byte_vector tags;
+ CORE_ADDR addr = 0;
+ size_t len = 0;
+ int type = 0;
+
+ require_running_or_return (own_buf);
+
+ parse_fetch_memtags_request (own_buf, &addr, &len, &type);
+
+ bool ret = the_target->fetch_memtags (addr, len, tags, type);
+
+ if (ret)
+ ret = create_fetch_memtags_reply (own_buf, tags);
+
+ if (!ret)
+ write_enn (own_buf);
+
+ *new_packet_len_p = strlen (own_buf);
+ return;
+ }
+
/* Otherwise we didn't know what packet it was. Say we didn't
understand it. */
own_buf[0] = 0;
cs.last_status = thread->last_status;
cs.last_ptid = thread->id;
- prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status);
+ prepare_resume_reply (cs.own_buf, cs.last_ptid, cs.last_status);
return 1;
}
return 0;
{
cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1);
- if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED
+ if (cs.last_status.kind () == TARGET_WAITKIND_NO_RESUMED
&& !report_no_resumed)
{
/* The client does not support this stop reply. At least
return;
}
- if (cs.last_status.kind != TARGET_WAITKIND_EXITED
- && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED
- && cs.last_status.kind != TARGET_WAITKIND_NO_RESUMED)
+ if (cs.last_status.kind () != TARGET_WAITKIND_EXITED
+ && cs.last_status.kind () != TARGET_WAITKIND_SIGNALLED
+ && cs.last_status.kind () != TARGET_WAITKIND_NO_RESUMED)
current_thread->last_status = cs.last_status;
/* From the client's perspective, all-stop mode always stops all
so by now). Tag all threads as "want-stopped", so we don't
resume them implicitly without the client telling us to. */
gdb_wants_all_threads_stopped ();
- prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status);
+ prepare_resume_reply (cs.own_buf, cs.last_ptid, cs.last_status);
disable_async_io ();
- if (cs.last_status.kind == TARGET_WAITKIND_EXITED
- || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED)
- target_mourn_inferior (cs.last_ptid);
+ if (cs.last_status.kind () == TARGET_WAITKIND_EXITED
+ || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED)
+ target_mourn_inferior (cs.last_ptid);
}
}
-/* Attach to a new program. Return 1 if successful, 0 if failure. */
-static int
+/* Attach to a new program. */
+static void
handle_v_attach (char *own_buf)
{
client_state &cs = get_client_state ();
some libraries are preloaded. GDB will always poll the
library list. Avoids the "stopped by shared library event"
notice on the GDB side. */
- dlls_changed = 0;
+ current_process ()->dlls_changed = false;
if (non_stop)
{
write_ok (own_buf);
}
else
- prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status);
-
- return 1;
+ prepare_resume_reply (own_buf, cs.last_ptid, cs.last_status);
}
else
- {
- write_enn (own_buf);
- return 0;
- }
+ write_enn (own_buf);
}
-/* Run a new program. Return 1 if successful, 0 if failure. */
-static int
+/* Run a new program. */
+static void
handle_v_run (char *own_buf)
{
client_state &cs = get_client_state ();
else if (p == next_p)
{
/* Empty argument. */
- new_argv.push_back (xstrdup ("''"));
+ new_argv.push_back (xstrdup (""));
}
else
{
if (*next_p)
next_p++;
}
- new_argv.push_back (NULL);
if (new_program_name == NULL)
{
{
write_enn (own_buf);
free_vector_argv (new_argv);
- return 0;
+ return;
}
}
else
target_create_inferior (program_path.get (), program_args);
- if (cs.last_status.kind == TARGET_WAITKIND_STOPPED)
+ if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED)
{
- prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status);
+ prepare_resume_reply (own_buf, cs.last_ptid, cs.last_status);
/* In non-stop, sending a resume reply doesn't set the general
thread, but GDB assumes a vRun sets it (this is so GDB can
query which is the main thread of the new inferior. */
if (non_stop)
cs.general_thread = cs.last_ptid;
-
- return 1;
}
else
- {
- write_enn (own_buf);
- return 0;
- }
+ write_enn (own_buf);
}
-/* Kill process. Return 1 if successful, 0 if failure. */
-static int
+/* Kill process. */
+static void
handle_v_kill (char *own_buf)
{
client_state &cs = get_client_state ();
if (proc != nullptr && kill_inferior (proc) == 0)
{
- cs.last_status.kind = TARGET_WAITKIND_SIGNALLED;
- cs.last_status.value.sig = GDB_SIGNAL_KILL;
+ cs.last_status.set_signalled (GDB_SIGNAL_KILL);
cs.last_ptid = ptid_t (pid);
discard_queued_stop_replies (cs.last_ptid);
write_ok (own_buf);
- return 1;
}
else
- {
- write_enn (own_buf);
- return 0;
- }
+ write_enn (own_buf);
}
/* Handle all of the extended 'v' packets. */
{
if (target_thread_stopped (thread))
{
- if (debug_threads)
- {
- std::string status_string
- = target_waitstatus_to_string (&thread->last_status);
+ threads_debug_printf
+ ("Reporting thread %s as already stopped with %s",
+ target_pid_to_str (thread->id).c_str (),
+ thread->last_status.to_string ().c_str ());
- debug_printf ("Reporting thread %s as already stopped with %s\n",
- target_pid_to_str (thread->id),
- status_string.c_str ());
- }
-
- gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE);
+ gdb_assert (thread->last_status.kind () != TARGET_WAITKIND_IGNORE);
/* Pass the last stop reply back to GDB, but don't notify
yet. */
- queue_stop_reply (thread->id, &thread->last_status);
+ queue_stop_reply (thread->id, thread->last_status);
}
}
}
{
thread->last_resume_kind = resume_stop;
- if (thread->last_status.kind == TARGET_WAITKIND_IGNORE)
+ if (thread->last_status.kind () == TARGET_WAITKIND_IGNORE)
{
/* Most threads are stopped implicitly (all-stop); tag that with
signal 0. */
- thread->last_status.kind = TARGET_WAITKIND_STOPPED;
- thread->last_status.value.sig = GDB_SIGNAL_0;
+ thread->last_status.set_stopped (GDB_SIGNAL_0);
}
}
static void
set_pending_status_callback (thread_info *thread)
{
- if (thread->last_status.kind != TARGET_WAITKIND_STOPPED
- || (thread->last_status.value.sig != GDB_SIGNAL_0
+ if (thread->last_status.kind () != TARGET_WAITKIND_STOPPED
+ || (thread->last_status.sig () != GDB_SIGNAL_0
/* A breakpoint, watchpoint or finished step from a previous
GDB run isn't considered interesting for a new GDB run.
If we left those pending, the new GDB could consider them
random SIGTRAPs. This leaves out real async traps. We'd
have to peek into the (target-specific) siginfo to
distinguish those. */
- && thread->last_status.value.sig != GDB_SIGNAL_TRAP))
+ && thread->last_status.sig () != GDB_SIGNAL_TRAP))
thread->status_pending_p = 1;
}
/* Prefer the last thread that reported an event to GDB (even if
that was a GDB_SIGNAL_TRAP). */
- if (cs.last_status.kind != TARGET_WAITKIND_IGNORE
- && cs.last_status.kind != TARGET_WAITKIND_EXITED
- && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED)
+ if (cs.last_status.kind () != TARGET_WAITKIND_IGNORE
+ && cs.last_status.kind () != TARGET_WAITKIND_EXITED
+ && cs.last_status.kind () != TARGET_WAITKIND_SIGNALLED)
thread = find_thread_ptid (cs.last_ptid);
/* If the last event thread is not found for some reason, look
cs.general_thread = thread->id;
set_desired_thread ();
- gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE);
- prepare_resume_reply (own_buf, tp->id, &tp->last_status);
+ gdb_assert (tp->last_status.kind () != TARGET_WAITKIND_IGNORE);
+ prepare_resume_reply (own_buf, tp->id, tp->last_status);
}
else
strcpy (own_buf, "W00");
gdbserver_version (void)
{
printf ("GNU gdbserver %s%s\n"
- "Copyright (C) 2020 Free Software Foundation, Inc.\n"
+ "Copyright (C) 2022 Free Software Foundation, Inc.\n"
"gdbserver is free software, covered by the "
"GNU General Public License.\n"
"This gdbserver was configured as \"%s\"\n",
" none\n"
" timestamp\n"
" --remote-debug Enable remote protocol debugging output.\n"
+ " --event-loop-debug Enable event loop debugging output.\n"
" --disable-packet=OPT1[,OPT2,...]\n"
" Disable support for RSP packets or features.\n"
" Options:\n"
- " vCont, Tthread, qC, qfThreadInfo and \n"
+ " vCont, T, Tthread, qC, qfThreadInfo and \n"
" threads (disable all threading packets).\n"
"\n"
"For more information, consult the GDB manual (available as on-line \n"
" qfThreadInfo\tThread listing\n"
" Tthread \tPassing the thread specifier in the "
"T stop reply packet\n"
- " threads \tAll of the above\n");
+ " threads \tAll of the above\n"
+ " T \tAll 'T' packets\n");
+}
+
+/* Start up the event loop. This is the entry point to the event
+ loop. */
+
+static void
+start_event_loop ()
+{
+ /* Loop until there is nothing to do. This is the entry point to
+ the event loop engine. If nothing is ready at this time, wait
+ for something to happen (via wait_for_event), then process it.
+ Return when there are no longer event sources to wait for. */
+
+ keep_processing_events = true;
+ while (keep_processing_events)
+ {
+ /* Any events already waiting in the queue? */
+ int res = gdb_do_one_event ();
+
+ /* Was there an error? */
+ if (res == -1)
+ break;
+ }
+
+ /* We are done with the event loop. There are no more event sources
+ to listen to. So we exit gdbserver. */
}
static void
}
}
+#if GDB_SELF_TEST
+
+namespace selftests {
+
+static void
+test_memory_tagging_functions (void)
+{
+ /* Setup testing. */
+ gdb::char_vector packet;
+ gdb::byte_vector tags, bv;
+ std::string expected;
+ packet.resize (32000);
+ CORE_ADDR addr;
+ size_t len;
+ int type;
+
+ /* Test parsing a qMemTags request. */
+
+ /* Valid request, addr, len and type updated. */
+ addr = 0xff;
+ len = 255;
+ type = 255;
+ strcpy (packet.data (), "qMemTags:0,0:0");
+ parse_fetch_memtags_request (packet.data (), &addr, &len, &type);
+ SELF_CHECK (addr == 0 && len == 0 && type == 0);
+
+ /* Valid request, addr, len and type updated. */
+ addr = 0;
+ len = 0;
+ type = 0;
+ strcpy (packet.data (), "qMemTags:deadbeef,ff:5");
+ parse_fetch_memtags_request (packet.data (), &addr, &len, &type);
+ SELF_CHECK (addr == 0xdeadbeef && len == 255 && type == 5);
+
+ /* Test creating a qMemTags reply. */
+
+ /* Non-empty tag data. */
+ bv.resize (0);
+
+ for (int i = 0; i < 5; i++)
+ bv.push_back (i);
+
+ expected = "m0001020304";
+ SELF_CHECK (create_fetch_memtags_reply (packet.data (), bv) == true);
+ SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0);
+
+ /* Test parsing a QMemTags request. */
+
+ /* Valid request and empty tag data: addr, len, type and tags updated. */
+ addr = 0xff;
+ len = 255;
+ type = 255;
+ tags.resize (5);
+ strcpy (packet.data (), "QMemTags:0,0:0:");
+ SELF_CHECK (parse_store_memtags_request (packet.data (),
+ &addr, &len, tags, &type) == true);
+ SELF_CHECK (addr == 0 && len == 0 && type == 0 && tags.size () == 0);
+
+ /* Valid request and non-empty tag data: addr, len, type
+ and tags updated. */
+ addr = 0;
+ len = 0;
+ type = 0;
+ tags.resize (0);
+ strcpy (packet.data (),
+ "QMemTags:deadbeef,ff:5:0001020304");
+ SELF_CHECK (parse_store_memtags_request (packet.data (), &addr, &len, tags,
+ &type) == true);
+ SELF_CHECK (addr == 0xdeadbeef && len == 255 && type == 5
+ && tags.size () == 5);
+}
+
+} // namespace selftests
+#endif /* GDB_SELF_TEST */
+
/* Main function. This is called by the real "main" function,
wrapped in a TRY_CATCH that handles any uncaught exceptions. */
int was_running;
bool selftest = false;
#if GDB_SELF_TEST
- const char *selftest_filter = NULL;
+ std::vector<const char *> selftest_filters;
+
+ selftests::register_test ("remote_memory_tagging",
+ selftests::test_memory_tagging_functions);
#endif
current_directory = getcwd (NULL, 0);
*next_arg = NULL;
}
else if (strcmp (*next_arg, "--debug") == 0)
- debug_threads = 1;
+ debug_threads = true;
else if (startswith (*next_arg, "--debug-format="))
{
std::string error_msg
}
}
else if (strcmp (*next_arg, "--remote-debug") == 0)
- remote_debug = 1;
+ remote_debug = true;
+ else if (strcmp (*next_arg, "--event-loop-debug") == 0)
+ debug_event_loop = debug_event_loop_kind::ALL;
else if (startswith (*next_arg, "--debug-file="))
debug_set_output ((*next_arg) + sizeof ("--debug-file=") -1);
else if (strcmp (*next_arg, "--disable-packet") == 0)
else if (startswith (*next_arg, "--selftest="))
{
selftest = true;
+
#if GDB_SELF_TEST
- selftest_filter = *next_arg + strlen ("--selftest=");
+ const char *filter = *next_arg + strlen ("--selftest=");
+ if (*filter == '\0')
+ {
+ fprintf (stderr, _("Error: selftest filter is empty.\n"));
+ exit (1);
+ }
+
+ selftest_filters.push_back (filter);
#endif
}
else
initialize_async_io ();
initialize_low ();
have_job_control ();
- initialize_event_loop ();
if (target_supports_tracepoints ())
initialize_tracepoint ();
if (selftest)
{
#if GDB_SELF_TEST
- selftests::run_tests (selftest_filter);
+ selftests::run_tests (selftest_filters);
#else
printf (_("Selftests have been disabled for this build.\n"));
#endif
program_path.set (make_unique_xstrdup (next_arg[0]));
for (i = 1; i < n; i++)
program_args.push_back (xstrdup (next_arg[i]));
- program_args.push_back (NULL);
/* Wait till we are at first instruction in program. */
target_create_inferior (program_path.get (), program_args);
}
else
{
- cs.last_status.kind = TARGET_WAITKIND_EXITED;
- cs.last_status.value.integer = 0;
+ cs.last_status.set_exited (0);
cs.last_ptid = minus_one_ptid;
}
/* Don't report shared library events on the initial connection,
even if some libraries are preloaded. Avoids the "stopped by
shared library event" notice on gdb side. */
- dlls_changed = 0;
+ if (current_thread != nullptr)
+ current_process ()->dlls_changed = false;
- if (cs.last_status.kind == TARGET_WAITKIND_EXITED
- || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED)
+ if (cs.last_status.kind () == TARGET_WAITKIND_EXITED
+ || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED)
was_running = 0;
else
was_running = 1;
cs.swbreak_feature = 0;
cs.hwbreak_feature = 0;
cs.vCont_supported = 0;
+ cs.memory_tagging_feature = false;
remote_open (port);
- If --once was specified, we're done.
- If not in extended-remote mode, and we're no longer
- debugging anything, simply exit: GDB has disconnected
- after processing the last process exit.
+ debugging anything, simply exit: GDB has disconnected
+ after processing the last process exit.
- Otherwise, close the connection and reopen it at the
- top of the loop. */
+ top of the loop. */
if (run_once || (!extended_protocol && !target_running ()))
throw_quit ("Quit");
if (*dataptr == 'X')
{
/* Conditional expression. */
- if (debug_threads)
- debug_printf ("Found breakpoint condition.\n");
+ threads_debug_printf ("Found breakpoint condition.");
if (!add_breakpoint_condition (bp, &dataptr))
dataptr = strchrnul (dataptr, ';');
}
else if (startswith (dataptr, "cmds:"))
{
dataptr += strlen ("cmds:");
- if (debug_threads)
- debug_printf ("Found breakpoint commands %s.\n", dataptr);
+ threads_debug_printf ("Found breakpoint commands %s.", dataptr);
persist = (*dataptr == '1');
dataptr += 2;
if (add_breakpoint_commands (bp, &dataptr, persist))
running. The traditional protocol will exit instead. */
if (extended_protocol)
{
- cs.last_status.kind = TARGET_WAITKIND_EXITED;
- cs.last_status.value.sig = GDB_SIGNAL_KILL;
+ cs.last_status.set_exited (GDB_SIGNAL_KILL);
return 0;
}
else
{
target_create_inferior (program_path.get (), program_args);
- if (cs.last_status.kind == TARGET_WAITKIND_STOPPED)
+ if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED)
{
/* Stopped at the first instruction of the target
process. */
}
else
{
- cs.last_status.kind = TARGET_WAITKIND_EXITED;
- cs.last_status.value.sig = GDB_SIGNAL_KILL;
+ cs.last_status.set_exited (GDB_SIGNAL_KILL);
}
return 0;
}
/* Event-loop callback for serial events. */
-int
+void
handle_serial_event (int err, gdb_client_data client_data)
{
- if (debug_threads)
- debug_printf ("handling possible serial event\n");
+ threads_debug_printf ("handling possible serial event");
/* Really handle it. */
if (process_serial_event () < 0)
- return -1;
+ {
+ keep_processing_events = false;
+ return;
+ }
/* Be sure to not change the selected thread behind GDB's back.
Important in the non-stop mode asynchronous protocol. */
set_desired_thread ();
-
- return 0;
}
/* Push a stop notification on the notification queue. */
static void
-push_stop_notification (ptid_t ptid, struct target_waitstatus *status)
+push_stop_notification (ptid_t ptid, const target_waitstatus &status)
{
struct vstop_notif *vstop_notif = new struct vstop_notif;
- vstop_notif->status = *status;
+ vstop_notif->status = status;
vstop_notif->ptid = ptid;
/* Push Stop notification. */
notif_push (¬if_stop, vstop_notif);
/* Event-loop callback for target events. */
-int
+void
handle_target_event (int err, gdb_client_data client_data)
{
client_state &cs = get_client_state ();
- if (debug_threads)
- debug_printf ("handling possible target event\n");
+ threads_debug_printf ("handling possible target event");
cs.last_ptid = mywait (minus_one_ptid, &cs.last_status,
TARGET_WNOHANG, 1);
- if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED)
+ if (cs.last_status.kind () == TARGET_WAITKIND_NO_RESUMED)
{
if (gdb_connected () && report_no_resumed)
- push_stop_notification (null_ptid, &cs.last_status);
+ push_stop_notification (null_ptid, cs.last_status);
}
- else if (cs.last_status.kind != TARGET_WAITKIND_IGNORE)
+ else if (cs.last_status.kind () != TARGET_WAITKIND_IGNORE)
{
int pid = cs.last_ptid.pid ();
struct process_info *process = find_process_pid (pid);
int forward_event = !gdb_connected () || process->gdb_detached;
- if (cs.last_status.kind == TARGET_WAITKIND_EXITED
- || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED)
+ if (cs.last_status.kind () == TARGET_WAITKIND_EXITED
+ || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED)
{
mark_breakpoints_out (process);
target_mourn_inferior (cs.last_ptid);
}
- else if (cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED)
+ else if (cs.last_status.kind () == TARGET_WAITKIND_THREAD_EXITED)
;
else
{
exit (0);
}
- if (cs.last_status.kind == TARGET_WAITKIND_EXITED
- || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED
- || cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED)
+ if (cs.last_status.kind () == TARGET_WAITKIND_EXITED
+ || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED
+ || cs.last_status.kind () == TARGET_WAITKIND_THREAD_EXITED)
;
else
{
inferior, as if it wasn't being traced. */
enum gdb_signal signal;
- if (debug_threads)
- debug_printf ("GDB not connected; forwarding event %d for"
- " [%s]\n",
- (int) cs.last_status.kind,
- target_pid_to_str (cs.last_ptid));
+ threads_debug_printf ("GDB not connected; forwarding event %d for"
+ " [%s]",
+ (int) cs.last_status.kind (),
+ target_pid_to_str (cs.last_ptid).c_str ());
- if (cs.last_status.kind == TARGET_WAITKIND_STOPPED)
- signal = cs.last_status.value.sig;
+ if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED)
+ signal = cs.last_status.sig ();
else
signal = GDB_SIGNAL_0;
target_continue (cs.last_ptid, signal);
}
}
else
- push_stop_notification (cs.last_ptid, &cs.last_status);
+ push_stop_notification (cs.last_ptid, cs.last_status);
}
/* Be sure to not change the selected thread behind GDB's back.
Important in the non-stop mode asynchronous protocol. */
set_desired_thread ();
+}
+
+/* See gdbsupport/event-loop.h. */
+
+int
+invoke_async_signal_handlers ()
+{
+ return 0;
+}
+
+/* See gdbsupport/event-loop.h. */
+int
+check_async_event_handlers ()
+{
return 0;
}
+/* See gdbsupport/errors.h */
+
+void
+flush_streams ()
+{
+ fflush (stdout);
+ fflush (stderr);
+}
+
+/* See gdbsupport/gdb_select.h. */
+
+int
+gdb_select (int n, fd_set *readfds, fd_set *writefds,
+ fd_set *exceptfds, struct timeval *timeout)
+{
+ return select (n, readfds, writefds, exceptfds, timeout);
+}
+
#if GDB_SELF_TEST
namespace selftests
{
projects / binutils-gdb.git / blobdiff