/* Remote utility routines for the remote server for GDB.
- Copyright (C) 1986-2020 Free Software Foundation, Inc.
+ Copyright (C) 1986-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include <ws2tcpip.h>
#endif
-#if __QNX__
-#include <sys/iomgr.h>
-#endif /* __QNX__ */
-
#ifndef HAVE_SOCKLEN_T
typedef int socklen_t;
#endif
#ifndef IN_PROCESS_AGENT
-#if USE_WIN32API
-# define INVALID_DESCRIPTOR INVALID_SOCKET
-#else
-# define INVALID_DESCRIPTOR -1
-#endif
-
/* Extra value for readchar_callback. */
enum {
/* The callback is currently not scheduled. */
static int remote_is_stdio = 0;
-static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR;
-static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR;
+static int remote_desc = -1;
+static int listen_desc = -1;
#ifdef USE_WIN32API
+/* gnulib wraps these as macros, undo them. */
+# undef read
+# undef write
+
# define read(fd, buf, len) recv (fd, (char *) buf, len, 0)
# define write(fd, buf, len) send (fd, (char *) buf, len, 0)
#endif
int
gdb_connected (void)
{
- return remote_desc != INVALID_DESCRIPTOR;
+ return remote_desc != -1;
}
/* Return true if the remote connection is over stdio. */
#endif
}
-static int
+static void
handle_accept_event (int err, gdb_client_data client_data)
{
struct sockaddr_storage sockaddr;
enable_async_notification (remote_desc);
/* Register the event loop handler. */
- add_file_handler (remote_desc, handle_serial_event, NULL);
+ add_file_handler (remote_desc, handle_serial_event, NULL, "remote-net");
/* We have a new GDB connection now. If we were disconnected
tracing, there's a window where the target could report a stop
until GDB as selected all-stop/non-stop, and has queried the
threads' status ('?'). */
target_async (0);
-
- return 0;
}
/* Prepare for a later connection to a remote debugger.
enable_async_notification (remote_desc);
/* Register the event loop handler. */
- add_file_handler (remote_desc, handle_serial_event, NULL);
+ add_file_handler (remote_desc, handle_serial_event, NULL, "remote-stdio");
}
#ifndef USE_WIN32API
else if (port_str == NULL)
enable_async_notification (remote_desc);
/* Register the event loop handler. */
- add_file_handler (remote_desc, handle_serial_event, NULL);
+ add_file_handler (remote_desc, handle_serial_event, NULL,
+ "remote-device");
}
#endif /* USE_WIN32API */
else
fflush (stderr);
/* Register the event loop handler. */
- add_file_handler (listen_desc, handle_accept_event, NULL);
+ add_file_handler (listen_desc, handle_accept_event, NULL,
+ "remote-listen");
}
}
if (! remote_connection_is_stdio ())
close (remote_desc);
#endif
- remote_desc = INVALID_DESCRIPTOR;
+ remote_desc = -1;
reset_readchar ();
}
/* Check for an input interrupt while we're here. */
if (cc == '\003' && current_thread != NULL)
- the_target->pt->request_interrupt ();
+ the_target->request_interrupt ();
}
while (cc != '+');
return;
}
- the_target->pt->request_interrupt ();
+ the_target->request_interrupt ();
}
}
/* This function may be called before establishing communications,
therefore we need to validate the remote descriptor. */
- if (remote_desc == INVALID_DESCRIPTOR)
+ if (remote_desc == -1)
return;
input_interrupt (0);
#endif
}
-#ifdef __QNX__
-static void
-nto_comctrl (int enable)
-{
- struct sigevent event;
-
- if (enable)
- {
- event.sigev_notify = SIGEV_SIGNAL_THREAD;
- event.sigev_signo = SIGIO;
- event.sigev_code = 0;
- event.sigev_value.sival_ptr = NULL;
- event.sigev_priority = -1;
- ionotify (remote_desc, _NOTIFY_ACTION_POLLARM, _NOTIFY_COND_INPUT,
- &event);
- }
- else
- ionotify (remote_desc, _NOTIFY_ACTION_POLL, _NOTIFY_COND_INPUT, NULL);
-}
-#endif /* __QNX__ */
-
-
/* Current state of asynchronous I/O. */
static int async_io_enabled;
block_unblock_async_io (0);
async_io_enabled = 1;
-#ifdef __QNX__
- nto_comctrl (1);
-#endif /* __QNX__ */
}
/* Disable asynchronous I/O. */
block_unblock_async_io (1);
async_io_enabled = 0;
-#ifdef __QNX__
- nto_comctrl (0);
-#endif /* __QNX__ */
-
}
void
readchar_bufcnt = 0;
if (readchar_callback != NOT_SCHEDULED)
{
- delete_callback_event (readchar_callback);
+ delete_timer (readchar_callback);
readchar_callback = NOT_SCHEDULED;
}
}
/* Process remaining data in readchar_buf. */
-static int
+static void
process_remaining (void *context)
{
- int res;
-
/* This is a one-shot event. */
readchar_callback = NOT_SCHEDULED;
if (readchar_bufcnt > 0)
- res = handle_serial_event (0, NULL);
- else
- res = 0;
-
- return res;
+ handle_serial_event (0, NULL);
}
/* If there is still data in the buffer, queue another event to process it,
reschedule (void)
{
if (readchar_bufcnt > 0 && readchar_callback == NOT_SCHEDULED)
- readchar_callback = append_callback_event (process_remaining, NULL);
+ readchar_callback = create_timer (0, process_remaining, NULL);
}
/* Read a packet from the remote machine, with error checking,
check for an input interrupt. */
if (c == '\003')
{
- the_target->pt->request_interrupt ();
+ the_target->request_interrupt ();
continue;
}
{
/* Consume the interrupt character in the buffer. */
readchar ();
- the_target->pt->request_interrupt ();
+ the_target->request_interrupt ();
}
return bp - buf;
else
sprintf (buf, "T%02x", status->value.sig);
+ if (disable_packet_T)
+ {
+ /* This is a bit (OK, a lot) of a kludge, however, this isn't
+ really a user feature, but exists only so GDB can use the
+ gdbserver to test handling of the 'S' stop reply packet, so
+ we would rather this code be as simple as possible.
+
+ By this point we've started to build the 'T' stop packet,
+ and it should look like 'Txx....' where 'x' is a hex digit.
+ An 'S' stop packet always looks like 'Sxx', so all we do
+ here is convert the buffer from a T packet to an S packet
+ and the avoid adding any extra content by breaking out. */
+ gdb_assert (*buf == 'T');
+ gdb_assert (isxdigit (*(buf + 1)));
+ gdb_assert (isxdigit (*(buf + 2)));
+ *buf = 'S';
+ *(buf + 3) = '\0';
+ break;
+ }
+
buf += strlen (buf);
saved_thread = current_thread;
regcache = get_thread_regcache (current_thread, 1);
- if (the_target->pt->stopped_by_watchpoint ())
+ if (the_target->stopped_by_watchpoint ())
{
CORE_ADDR addr;
int i;
memcpy (buf, "watch:", 6);
buf += 6;
- addr = the_target->pt->stopped_data_address ();
+ addr = the_target->stopped_data_address ();
/* Convert each byte of the address into two hexadecimal
chars. Note that we take sizeof (void *) instead of
}
}
- if (dlls_changed)
+ if (current_process ()->dlls_changed)
{
strcpy (buf, "library:;");
buf += strlen (buf);
- dlls_changed = 0;
+ current_process ()->dlls_changed = false;
}
current_thread = saved_thread;
}
}
-void
-decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr)
+/* See remote-utils.h. */
+
+const char *
+decode_m_packet_params (const char *from, CORE_ADDR *mem_addr_ptr,
+ unsigned int *len_ptr, const char end_marker)
{
- int i = 0, j = 0;
+ int i = 0;
char ch;
*mem_addr_ptr = *len_ptr = 0;
*mem_addr_ptr |= fromhex (ch) & 0x0f;
}
- for (j = 0; j < 4; j++)
+ while ((ch = from[i++]) != end_marker)
{
- if ((ch = from[i++]) == 0)
- break;
*len_ptr = *len_ptr << 4;
*len_ptr |= fromhex (ch) & 0x0f;
}
+
+ return from + i;
}
void
-decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr,
- unsigned char **to_p)
+decode_m_packet (const char *from, CORE_ADDR *mem_addr_ptr,
+ unsigned int *len_ptr)
{
- int i = 0;
- char ch;
- *mem_addr_ptr = *len_ptr = 0;
-
- while ((ch = from[i++]) != ',')
- {
- *mem_addr_ptr = *mem_addr_ptr << 4;
- *mem_addr_ptr |= fromhex (ch) & 0x0f;
- }
+ decode_m_packet_params (from, mem_addr_ptr, len_ptr, '\0');
+}
- while ((ch = from[i++]) != ':')
- {
- *len_ptr = *len_ptr << 4;
- *len_ptr |= fromhex (ch) & 0x0f;
- }
+void
+decode_M_packet (const char *from, CORE_ADDR *mem_addr_ptr,
+ unsigned int *len_ptr, unsigned char **to_p)
+{
+ from = decode_m_packet_params (from, mem_addr_ptr, len_ptr, ':');
if (*to_p == NULL)
*to_p = (unsigned char *) xmalloc (*len_ptr);
- hex2bin (&from[i++], *to_p, *len_ptr);
+ hex2bin (from, *to_p, *len_ptr);
}
int
projects / deliverable / binutils-gdb.git / blobdiff