along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-/* *INDENT-OFF* */
-/* Remote communication protocol.
-
- A debug packet whose contents are <data>
- is encapsulated for transmission in the form:
-
- $ <data> # CSUM1 CSUM2
-
- <data> must be ASCII alphanumeric and cannot include characters
- '$' or '#'. If <data> starts with two characters followed by
- ':', then the existing stubs interpret this as a sequence number.
-
- CSUM1 and CSUM2 are ascii hex representation of an 8-bit
- checksum of <data>, the most significant nibble is sent first.
- the hex digits 0-9,a-f are used.
-
- Receiver responds with:
-
- + - if CSUM is correct and ready for next packet
- - - if CSUM is incorrect
-
- <data> is as follows:
- Most values are encoded in ascii hex digits. Signal numbers are according
- to the numbering in target.h.
-
- Request Packet
-
- set thread Hct... Set thread for subsequent operations.
- c = 'c' for thread used in step and
- continue; t... can be -1 for all
- threads.
- c = 'g' for thread used in other
- operations. If zero, pick a thread,
- any thread.
- reply OK for success
- ENN for an error.
-
- read registers g
- reply XX....X Each byte of register data
- is described by two hex digits.
- Registers are in the internal order
- for GDB, and the bytes in a register
- are in the same order the machine uses.
- or ENN for an error.
-
- write regs GXX..XX Each byte of register data
- is described by two hex digits.
- reply OK for success
- ENN for an error
-
- write reg Pn...=r... Write register n... with value r...,
- which contains two hex digits for each
- byte in the register (target byte
- order).
- reply OK for success
- ENN for an error
- (not supported by all stubs).
-
- read mem mAA..AA,LLLL AA..AA is address, LLLL is length.
- reply XX..XX XX..XX is mem contents
- Can be fewer bytes than requested
- if able to read only part of the data.
- or ENN NN is errno
-
- write mem MAA..AA,LLLL:XX..XX
- AA..AA is address,
- LLLL is number of bytes,
- XX..XX is data
- reply OK for success
- ENN for an error (this includes the case
- where only part of the data was
- written).
-
- write mem XAA..AA,LLLL:XX..XX
- (binary) AA..AA is address,
- LLLL is number of bytes,
- XX..XX is binary data
- reply OK for success
- ENN for an error
-
- continue cAA..AA AA..AA is address to resume
- If AA..AA is omitted,
- resume at same address.
-
- step sAA..AA AA..AA is address to resume
- If AA..AA is omitted,
- resume at same address.
-
- continue with Csig;AA..AA Continue with signal sig (hex signal
- signal number). If ;AA..AA is omitted,
- resume at same address.
-
- step with Ssig;AA..AA Like 'C' but step not continue.
- signal
-
- last signal ? Reply the current reason for stopping.
- This is the same reply as is generated
- for step or cont : SAA where AA is the
- signal number.
-
- detach D Reply OK.
-
- There is no immediate reply to step or cont.
- The reply comes when the machine stops.
- It is SAA AA is the signal number.
-
- or... TAAn...:r...;n...:r...;n...:r...;
- AA = signal number
- n... = register number (hex)
- r... = register contents
- n... = `thread'
- r... = thread process ID. This is
- a hex integer.
- n... = other string not starting
- with valid hex digit.
- gdb should ignore this n,r pair
- and go on to the next. This way
- we can extend the protocol.
- or... WAA The process exited, and AA is
- the exit status. This is only
- applicable for certains sorts of
- targets.
- or... XAA The process terminated with signal
- AA.
- or (obsolete) NAA;tttttttt;dddddddd;bbbbbbbb
- AA = signal number
- tttttttt = address of symbol "_start"
- dddddddd = base of data section
- bbbbbbbb = base of bss section.
- Note: only used by Cisco Systems
- targets. The difference between this
- reply and the "qOffsets" query is that
- the 'N' packet may arrive spontaneously
- whereas the 'qOffsets' is a query
- initiated by the host debugger.
- or... OXX..XX XX..XX is hex encoding of ASCII data. This
- can happen at any time while the
- program is running and the debugger
- should continue to wait for
- 'W', 'T', etc.
-
- thread alive TXX Find out if the thread XX is alive.
- reply OK thread is still alive
- ENN thread is dead
-
- remote restart RXX Restart the remote server
-
- extended ops ! Use the extended remote protocol.
- Sticky -- only needs to be set once.
-
- kill request k
-
- toggle debug d toggle debug flag (see 386 & 68k stubs)
- reset r reset -- see sparc stub.
- reserved <other> On other requests, the stub should
- ignore the request and send an empty
- response ($#<checksum>). This way
- we can extend the protocol and GDB
- can tell whether the stub it is
- talking to uses the old or the new.
- search tAA:PP,MM Search backwards starting at address
- AA for a match with pattern PP and
- mask MM. PP and MM are 4 bytes.
- Not supported by all stubs.
-
- general query qXXXX Request info about XXXX.
- general set QXXXX=yyyy Set value of XXXX to yyyy.
- query sect offs qOffsets Get section offsets. Reply is
- Text=xxx;Data=yyy;Bss=zzz
-
- Responses can be run-length encoded to save space. A '*' means that
- the next character is an ASCII encoding giving a repeat count which
- stands for that many repititions of the character preceding the '*'.
- The encoding is n+29, yielding a printable character where n >=3
- (which is where rle starts to win). Don't use an n > 126.
-
- So
- "0* " means the same as "0000". */
-/* *INDENT-ON* */
-
-
+/* See the GDB User Guide for details of the GDB remote protocol. */
#include "defs.h"
#include "gdb_string.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "gdbthread.h"
+#include "remote.h"
#include "dcache.h"
#endif
#include "event-loop.h"
+#include "event-top.h"
#include <signal.h>
#include "serial.h"
static void remote_store_registers PARAMS ((int regno));
static void remote_mourn PARAMS ((void));
+static void remote_async_mourn PARAMS ((void));
static void extended_remote_restart PARAMS ((void));
extern int fromhex PARAMS ((int a));
-extern void getpkt PARAMS ((char *buf, int forever));
-
-extern int putpkt PARAMS ((char *buf));
-
static int putpkt_binary PARAMS ((char *buf, int cnt));
-void remote_console_output PARAMS ((char *));
-
static void check_binary_download PARAMS ((CORE_ADDR addr));
-#if __STDC__
struct packet_config;
-#endif
static void show_packet_config_cmd PARAMS ((struct packet_config * config));
static void show_remote_protocol_P_packet_cmd PARAMS ((char *args,
int from_tty));
+static void set_remote_protocol_Z_packet_cmd PARAMS ((char *args,
+ int from_tty,
+ struct cmd_list_element * c));
+
+static void show_remote_protocol_Z_packet_cmd PARAMS ((char *args,
+ int from_tty));
+
to denote that the target is in kernel mode. */
static int cisco_kernel_mode = 0;
-/* This variable (available to the user via "set remotebinarydownload")
- dictates whether downloads are sent in binary (via the 'X' packet).
- We assume that the stub can, and attempt to do it. This will be cleared if
- the stub does not understand it. This switch is still needed, though
- in cases when the packet is supported in the stub, but the connection
- does not allow it (i.e., 7-bit serial connection only). */
-static int remote_binary_download = 1;
-
-/* Have we already checked whether binary downloads work? */
-static int remote_binary_checked;
-
/* Maximum number of bytes to read/write at once. The value here
is chosen to fill up a packet (the headers account for the 32). */
#define MAXBUFBYTES(N) (((N)-32)/2)
config->support = PACKET_SUPPORT_UNKNOWN;
}
else
- fatal ("Bad enum value");
+ internal_error ("Bad enum value");
}
static void
show_packet_config_cmd (&remote_protocol_P);
}
+/* Should we try the 'Z' (set breakpoint) request? */
+
+static struct packet_config remote_protocol_Z;
+
+static void
+set_remote_protocol_Z_packet_cmd (args, from_tty, c)
+ char *args;
+ int from_tty;
+ struct cmd_list_element *c;
+{
+ set_packet_config_cmd (&remote_protocol_Z, c);
+}
+
+static void
+show_remote_protocol_Z_packet_cmd (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ show_packet_config_cmd (&remote_protocol_Z);
+}
+
+/* Should we try the 'X' (remote binary download) packet?
+
+ This variable (available to the user via "set remote X-packet")
+ dictates whether downloads are sent in binary (via the 'X' packet).
+ We assume that the stub can, and attempt to do it. This will be
+ cleared if the stub does not understand it. This switch is still
+ needed, though in cases when the packet is supported in the stub,
+ but the connection does not allow it (i.e., 7-bit serial connection
+ only). */
+
+static struct packet_config remote_protocol_binary_download;
+
+static void
+set_remote_protocol_binary_download_cmd (char *args,
+ int from_tty,
+ struct cmd_list_element *c)
+{
+ set_packet_config_cmd (&remote_protocol_binary_download, c);
+}
+
+static void
+show_remote_protocol_binary_download_cmd (char *args,
+ int from_tty)
+{
+ show_packet_config_cmd (&remote_protocol_binary_download);
+}
+
/* Tokens for use by the asynchronous signal handlers for SIGINT */
PTR sigint_remote_twice_token;
if (symfile_objfile == NULL)
return;
- offs = alloca (sizeof (struct section_offsets)
- + symfile_objfile->num_sections
- * sizeof (offs->offsets));
- memcpy (offs, symfile_objfile->section_offsets,
- sizeof (struct section_offsets)
- + symfile_objfile->num_sections
- * sizeof (offs->offsets));
+ offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
+ memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
ANOFFSET (offs, SECT_OFF_TEXT) = text_addr;
sprintf_vma (tmp + strlen (tmp), bss_addr);
fprintf_filtered (gdb_stdlog, tmp);
fprintf_filtered (gdb_stdlog,
- "Reloc offset: text = 0x%x data = 0x%x bss = 0x%x\n",
- (long) *text_offs, (long) *data_offs, (long) *bss_offs);
+ "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
+ paddr_nz (*text_offs),
+ paddr_nz (*data_offs),
+ paddr_nz (*bss_offs));
}
return 0;
* Relocate the symbol file for a remote target.
*/
-static void
+void
remote_cisco_objfile_relocate (text_off, data_off, bss_off)
bfd_signed_vma text_off;
bfd_signed_vma data_off;
broken for xcoff, dwarf, sdb-coff, etc. But there is no
simple canonical representation for this stuff. */
- offs = ((struct section_offsets *)
- alloca (sizeof (struct section_offsets)
- + (symfile_objfile->num_sections
- * sizeof (offs->offsets))));
-
- memcpy (offs, symfile_objfile->section_offsets,
- (sizeof (struct section_offsets)
- + (symfile_objfile->num_sections
- * sizeof (offs->offsets))));
+ offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
+ memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
ANOFFSET (offs, SECT_OFF_TEXT) = text_off;
ANOFFSET (offs, SECT_OFF_DATA) = data_off;
push_target (target); /* Switch to using remote target now */
init_packet_config (&remote_protocol_P);
-
+ init_packet_config (&remote_protocol_Z);
+
general_thread = -2;
continue_thread = -2;
/* Force remote_write_bytes to check whether target supports
binary downloading. */
- remote_binary_checked = 0;
+ init_packet_config (&remote_protocol_binary_download);
/* Without this, some commands which require an active target (such
as kill) won't work. This variable serves (at least) double duty
event loop. Set things up so that when there is an event on the
file descriptor, the event loop will call fetch_inferior_event,
which will do the proper analysis to determine what happened. */
- if (async_p)
- add_file_handler (remote_desc->fd, (file_handler_func *) fetch_inferior_event, 0);
+ if (async_p && SERIAL_CAN_ASYNC_P (remote_desc))
+ SERIAL_ASYNC (remote_desc, inferior_event_handler, 0);
+ if (remote_debug && SERIAL_IS_ASYNC_P (remote_desc))
+ fputs_unfiltered ("Async mode.\n", gdb_stdlog);
push_target (target); /* Switch to using remote target now */
init_packet_config (&remote_protocol_P);
+ init_packet_config (&remote_protocol_Z);
general_thread = -2;
continue_thread = -2;
/* Force remote_write_bytes to check whether target supports
binary downloading. */
- remote_binary_checked = 0;
+ init_packet_config (&remote_protocol_binary_download);
/* If running asynchronously, set things up for telling the target
to use the extended protocol. This will happen only after the
target has been connected to, in fetch_inferior_event. */
- if (extended_p && async_p)
+ if (extended_p && SERIAL_IS_ASYNC_P (remote_desc))
add_continuation (set_extended_protocol, NULL);
/* Without this, some commands which require an active target (such
RETURN_MASK_ALL))
{
/* Unregister the file descriptor from the event loop. */
- if (async_p)
- delete_file_handler (remote_desc->fd);
+ if (SERIAL_IS_ASYNC_P (remote_desc))
+ SERIAL_ASYNC (remote_desc, NULL, 0);
pop_target ();
return;
}
- if (!async_p)
+ if (!SERIAL_IS_ASYNC_P (remote_desc))
{
if (extended_p)
{
pop_target ();
if (from_tty)
puts_filtered ("Ending remote debugging.\n");
+
}
/* Same as remote_detach, but with async support. */
remote_send (buf);
/* Unregister the file descriptor from the event loop. */
- if (async_p)
- delete_file_handler (remote_desc->fd);
+ if (SERIAL_IS_ASYNC_P (remote_desc))
+ SERIAL_ASYNC (remote_desc, NULL, 0);
pop_target ();
if (from_tty)
command, because it is also called by handle_inferior_event. So
we make sure that we don't do the initialization for sync
execution more than once. */
- if (async_p && !target_executing)
+ if (SERIAL_IS_ASYNC_P (remote_desc) && !target_executing)
{
target_executing = 1;
{
signal (SIGINT, handle_sigint);
if (sigint_remote_twice_token)
- delete_async_signal_handler ((async_signal_handler **) & sigint_remote_twice_token);
+ delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token);
if (sigint_remote_token)
- delete_async_signal_handler ((async_signal_handler **) & sigint_remote_token);
+ delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token);
}
/* Send ^C to target to halt it. Target will respond, and send us a
if (symfile_objfile == NULL)
{
- warning ("Relocation packet recieved with no symbol file. \
+ warning ("Relocation packet received with no symbol file. \
Packet Dropped");
goto got_status;
}
{
unsigned char *p;
- if (!async_p)
+ if (!SERIAL_IS_ASYNC_P (remote_desc))
ofunc = signal (SIGINT, remote_interrupt);
getpkt ((char *) buf, 1);
- if (!async_p)
+ if (!SERIAL_IS_ASYNC_P (remote_desc))
signal (SIGINT, ofunc);
/* This is a hook for when we need to do something (perhaps the
the whole packet, since many stubs strip the eighth bit and subsequently
compute a wrong checksum, which causes real havoc with remote_write_bytes.
- NOTE: This can still lose if the serial line is not eight-bit clean. In
- cases like this, the user should clear "remotebinarydownload". */
+ NOTE: This can still lose if the serial line is not eight-bit
+ clean. In cases like this, the user should clear "remote
+ X-packet". */
+
static void
check_binary_download (addr)
CORE_ADDR addr;
{
- if (remote_binary_download && !remote_binary_checked)
+ switch (remote_protocol_binary_download.support)
{
- char *buf = alloca (PBUFSIZ);
- char *p;
- remote_binary_checked = 1;
-
- p = buf;
- *p++ = 'X';
- p += hexnumstr (p, (ULONGEST) addr);
- *p++ = ',';
- p += hexnumstr (p, (ULONGEST) 0);
- *p++ = ':';
- *p = '\0';
-
- putpkt_binary (buf, (int) (p - buf));
- getpkt (buf, 0);
-
- if (buf[0] == '\0')
- remote_binary_download = 0;
- }
+ case PACKET_DISABLE:
+ break;
+ case PACKET_ENABLE:
+ break;
+ case PACKET_SUPPORT_UNKNOWN:
+ {
+ char *buf = alloca (PBUFSIZ);
+ char *p;
+
+ p = buf;
+ *p++ = 'X';
+ p += hexnumstr (p, (ULONGEST) addr);
+ *p++ = ',';
+ p += hexnumstr (p, (ULONGEST) 0);
+ *p++ = ':';
+ *p = '\0';
+
+ putpkt_binary (buf, (int) (p - buf));
+ getpkt (buf, 0);
- if (remote_debug)
- {
- if (remote_binary_download)
- fprintf_unfiltered (gdb_stdlog,
- "binary downloading suppported by target\n");
- else
- fprintf_unfiltered (gdb_stdlog,
- "binary downloading NOT suppported by target\n");
+ if (buf[0] == '\0')
+ {
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "binary downloading NOT suppported by target\n");
+ remote_protocol_binary_download.support = PACKET_DISABLE;
+ }
+ else
+ {
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "binary downloading suppported by target\n");
+ remote_protocol_binary_download.support = PACKET_ENABLE;
+ }
+ break;
+ }
}
}
/* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
memaddr = remote_address_masked (memaddr);
p = buf;
- if (remote_binary_download)
+ switch (remote_protocol_binary_download.support)
{
+ case PACKET_ENABLE:
*p++ = 'X';
todo = min (len, max_buf_size);
- }
- else
- {
+ break;
+ case PACKET_DISABLE:
*p++ = 'M';
todo = min (len, max_buf_size / 2); /* num bytes that will fit */
+ break;
+ case PACKET_SUPPORT_UNKNOWN:
+ internal_error ("remote_write_bytes: bad switch");
}
p += hexnumstr (p, (ULONGEST) memaddr);
/* We send target system values byte by byte, in increasing byte
addresses, each byte encoded as two hex characters (or one
binary character). */
- if (remote_binary_download)
- {
- int escaped = 0;
- for (i = 0;
- (i < todo) && (i + escaped) < (max_buf_size - 2);
- i++)
- {
- switch (myaddr[i] & 0xff)
- {
- case '$':
- case '#':
- case 0x7d:
- /* These must be escaped */
- escaped++;
- *p++ = 0x7d;
- *p++ = (myaddr[i] & 0xff) ^ 0x20;
- break;
- default:
- *p++ = myaddr[i] & 0xff;
- break;
- }
- }
-
- if (i < todo)
- {
- /* Escape chars have filled up the buffer prematurely,
- and we have actually sent fewer bytes than planned.
- Fix-up the length field of the packet. */
-
- /* FIXME: will fail if new len is a shorter string than
- old len. */
-
- plen += hexnumstr (plen, (ULONGEST) i);
- *plen++ = ':';
- }
- }
- else
+ switch (remote_protocol_binary_download.support)
{
- for (i = 0; i < todo; i++)
- {
- *p++ = tohex ((myaddr[i] >> 4) & 0xf);
- *p++ = tohex (myaddr[i] & 0xf);
- }
- *p = '\0';
+ case PACKET_ENABLE:
+ {
+ int escaped = 0;
+ for (i = 0;
+ (i < todo) && (i + escaped) < (max_buf_size - 2);
+ i++)
+ {
+ switch (myaddr[i] & 0xff)
+ {
+ case '$':
+ case '#':
+ case 0x7d:
+ /* These must be escaped */
+ escaped++;
+ *p++ = 0x7d;
+ *p++ = (myaddr[i] & 0xff) ^ 0x20;
+ break;
+ default:
+ *p++ = myaddr[i] & 0xff;
+ break;
+ }
+ }
+
+ if (i < todo)
+ {
+ /* Escape chars have filled up the buffer prematurely,
+ and we have actually sent fewer bytes than planned.
+ Fix-up the length field of the packet. */
+
+ /* FIXME: will fail if new len is a shorter string than
+ old len. */
+
+ plen += hexnumstr (plen, (ULONGEST) i);
+ *plen++ = ':';
+ }
+ break;
+ }
+ case PACKET_DISABLE:
+ {
+ for (i = 0; i < todo; i++)
+ {
+ *p++ = tohex ((myaddr[i] >> 4) & 0xf);
+ *p++ = tohex (myaddr[i] & 0xf);
+ }
+ *p = '\0';
+ break;
+ }
+ case PACKET_SUPPORT_UNKNOWN:
+ internal_error ("remote_write_bytes: bad switch");
}
putpkt_binary (buf, (int) (p - buf));
*p = '\0';
fprintf_unfiltered (gdb_stdlog, "Sending packet: ");
fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog);
- fprintf_unfiltered (gdb_stdlog, "...", buf2);
+ fprintf_unfiltered (gdb_stdlog, "...");
gdb_flush (gdb_stdlog);
}
if (SERIAL_WRITE (remote_desc, buf2, p - buf2))
static int remote_cisco_mode;
-static void
-remote_cisco_expand (src, dest)
- char *src;
- char *dest;
-{
- int i;
- int repeat;
-
- do
- {
- if (*src == '*')
- {
- repeat = (fromhex (src[1]) << 4) + fromhex (src[2]);
- for (i = 0; i < repeat; i++)
- {
- *dest++ = *(src - 1);
- }
- src += 2;
- }
- else
- {
- *dest++ = *src;
- }
- }
- while (*src++);
-}
-
/* Come here after finding the start of the frame. Collect the rest
into BUF, verifying the checksum, length, and handling run-length
compression. Returns 0 on any error, 1 on success. */
pktcsum |= fromhex (readchar (remote_timeout));
if (csum == pktcsum)
- {
- if (remote_cisco_mode) /* variant run-length-encoding */
- {
- char *tmp_buf = alloca (PBUFSIZ);
-
- remote_cisco_expand (buf, tmp_buf);
- strcpy (buf, tmp_buf);
- }
- return 1;
- }
+ return 1;
if (remote_debug)
{
return 0;
}
case '*': /* Run length encoding */
- if (remote_cisco_mode == 0) /* variant run-length-encoding */
- {
- csum += c;
- c = readchar (remote_timeout);
- csum += c;
- c = c - ' ' + 3; /* Compute repeat count */
+ {
+ int repeat;
+ csum += c;
- if (c > 0 && c < 255 && bp + c - 1 < buf + PBUFSIZ - 1)
- {
- memset (bp, *(bp - 1), c);
- bp += c;
- continue;
- }
+ if (remote_cisco_mode == 0)
+ {
+ c = readchar (remote_timeout);
+ csum += c;
+ repeat = c - ' ' + 3; /* Compute repeat count */
+ }
+ else
+ {
+ /* Cisco's run-length encoding variant uses two
+ hex chars to represent the repeat count. */
+
+ c = readchar (remote_timeout);
+ csum += c;
+ repeat = fromhex (c) << 4;
+ c = readchar (remote_timeout);
+ csum += c;
+ repeat += fromhex (c);
+ }
- *bp = '\0';
- printf_filtered ("Repeat count %d too large for buffer: ", c);
- puts_filtered (buf);
- puts_filtered ("\n");
- return 0;
- }
- /* else fall thru to treat like default */
+ if (repeat > 0 && repeat <= 255
+ && bp + repeat - 1 < buf + PBUFSIZ - 1)
+ {
+ memset (bp, *(bp - 1), repeat);
+ bp += c;
+ continue;
+ }
+
+ *bp = '\0';
+ printf_filtered ("Repeat count %d too large for buffer: ", repeat);
+ puts_filtered (buf);
+ puts_filtered ("\n");
+ return 0;
+ }
default:
if (bp < buf + PBUFSIZ - 1)
{
remote_async_kill ()
{
/* Unregister the file descriptor from the event loop. */
- if (async_p)
- delete_file_handler (remote_desc->fd);
+ if (SERIAL_IS_ASYNC_P (remote_desc))
+ SERIAL_ASYNC (remote_desc, NULL, 0);
/* For some mysterious reason, wait_for_inferior calls kill instead of
mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
remote_mourn_1 (&remote_ops);
}
+static void
+remote_async_mourn ()
+{
+ remote_mourn_1 (&remote_async_ops);
+}
+
static void
extended_remote_mourn ()
{
/* If running asynchronously, register the target file descriptor
with the event loop. */
- if (async_p)
- add_file_handler (remote_desc->fd, (file_handler_func *) fetch_inferior_event, 0);
+ if (async_p && SERIAL_CAN_ASYNC_P (remote_desc))
+ SERIAL_ASYNC (remote_desc, inferior_event_handler, 0);
/* Now restart the remote server. */
extended_remote_restart ();
{
#ifdef REMOTE_BREAKPOINT
int val;
+#endif
+ int bp_size;
+
+ /* Try the "Z" packet if it is not already disabled.
+ If it succeeds, then set the support to PACKET_ENABLE.
+ If it fails, and the user has explicitly requested the Z support
+ then report an error, otherwise, mark it disabled and go on. */
+
+ if ((remote_protocol_Z.support == PACKET_ENABLE)
+ || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN))
+ {
+ char buf[PBUFSIZ], *p = buf;
+
+ addr = remote_address_masked (addr);
+ *(p++) = 'Z';
+ *(p++) = '0';
+ *(p++) = ',';
+ p += hexnumstr (p, (ULONGEST) addr);
+ BREAKPOINT_FROM_PC (&addr, &bp_size);
+ sprintf (p, ",%d", bp_size);
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] != '\0')
+ {
+ remote_protocol_Z.support = PACKET_ENABLE;
+ return (buf[0] == 'E');
+ }
+
+ /* The stub does not support the 'Z' request. If the user has
+ explicitly requested the Z support, or if the stub previously
+ said it supported the packet, this is an error,
+ otherwise, mark it disabled. */
+
+ else if (remote_protocol_Z.support == PACKET_ENABLE)
+ {
+ error ("Protocol error: Z packet not recognized by stub");
+ }
+ else
+ {
+ remote_protocol_Z.support = PACKET_DISABLE;
+ }
+ }
+#ifdef REMOTE_BREAKPOINT
val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
if (val == 0)
CORE_ADDR addr;
char *contents_cache;
{
+ int bp_size;
+
+ if ((remote_protocol_Z.support == PACKET_ENABLE)
+ || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN))
+ {
+ char buf[PBUFSIZ], *p = buf;
+
+ *(p++) = 'z';
+ *(p++) = '0';
+ *(p++) = ',';
+
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ BREAKPOINT_FROM_PC (&addr, &bp_size);
+ sprintf (p, ",%d", bp_size);
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ return (buf[0] == 'E');
+ }
+
#ifdef REMOTE_BREAKPOINT
return target_write_memory (addr, contents_cache, sizeof big_break_insn);
#else
#endif /* REMOTE_BREAKPOINT */
}
+#ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
+int
+remote_insert_watchpoint (addr, len, type)
+ CORE_ADDR addr;
+ int len;
+ int type;
+{
+ char buf[PBUFSIZ], *p;
+
+ if (remote_protocol_Z.support == PACKET_DISABLE)
+ error ("Can't set hardware watchpoints without the 'Z' packet\n");
+
+ sprintf (buf, "Z%x,", type + 2 );
+ p = strchr (buf, '\0');
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ sprintf (p, ",%x", len);
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+
+int
+remote_remove_watchpoint (addr, len, type)
+ CORE_ADDR addr;
+ int len;
+ int type;
+{
+ char buf[PBUFSIZ], *p;
+
+ sprintf (buf, "z%x,", type + 2 );
+ p = strchr (buf, '\0');
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ sprintf (p, ",%x", len);
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+
+int
+remote_insert_hw_breakpoint (addr, len)
+ CORE_ADDR addr;
+ int len;
+{
+ char buf[PBUFSIZ], *p = buf;
+
+ if (remote_protocol_Z.support == PACKET_DISABLE)
+ error ("Can't set hardware breakpoints without the 'Z' packet\n");
+
+ *(p++) = 'Z';
+ *(p++) = '1';
+ *(p++) = ',';
+
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ *p = '\0';
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+
+int
+remote_remove_hw_breakpoint (addr, len)
+ CORE_ADDR addr;
+ int len;
+{
+ char buf[PBUFSIZ], *p = buf;
+
+ *(p++) = 'z';
+ *(p++) = '1';
+ *(p++) = ',';
+
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ *p = '\0';
+
+ putpkt(buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+#endif
+
/* 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.
for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++)
target_crc = target_crc * 16 + fromhex (*tmp);
- printf_filtered ("Section %s, range 0x%08x -- 0x%08x: ",
- sectname, lma, lma + size);
+ printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
+ sectname, paddr (lma), paddr (lma + size));
if (host_crc == target_crc)
printf_filtered ("matched.\n");
else
int i;
char *buf2 = alloca (PBUFSIZ);
char *p2 = &buf2[0];
- char *p = buf;
if (!bufsiz)
error ("null pointer to remote bufer size specified");
return 0;
}
+static void
+remote_rcmd (char *command,
+ struct gdb_file *outbuf)
+{
+ int i;
+ char *buf = alloca (PBUFSIZ);
+ char *p = buf;
+
+ if (!remote_desc)
+ error ("remote rcmd is only available after target open");
+
+ /* Send a NULL command across as an empty command */
+ if (command == NULL)
+ command = "";
+
+ /* The query prefix */
+ strcpy (buf, "qRcmd,");
+ p = strchr (buf, '\0');
+
+ if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ)
+ error ("\"monitor\" command ``%s'' is too long\n", command);
+
+ /* Encode the actual command */
+ for (i = 0; command[i]; i++)
+ {
+ *p++ = tohex ((command[i] >> 4) & 0xf);
+ *p++ = tohex (command[i] & 0xf);
+ }
+ *p = '\0';
+
+ if (putpkt (buf) < 0)
+ error ("Communication problem with target\n");
+
+ /* get/display the response */
+ while (1)
+ {
+ /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
+ buf[0] = '\0';
+ getpkt (buf, 0);
+ if (buf[0] == '\0')
+ error ("Target does not support this command\n");
+ if (buf[0] == 'O' && buf[1] != 'K')
+ {
+ remote_console_output (buf + 1); /* 'O' message from stub */
+ continue;
+ }
+ if (strcmp (buf, "OK") == 0)
+ break;
+ if (strlen (buf) == 3 && buf[0] == 'E'
+ && isdigit (buf[1]) && isdigit (buf[2]))
+ {
+ error ("Protocol error with Rcmd");
+ }
+ for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2)
+ {
+ char c = (fromhex (p[0]) << 4) + fromhex (p[1]);
+ fputc_unfiltered (c, outbuf);
+ }
+ break;
+ }
+}
+
static void
packet_command (args, from_tty)
char *args;
remote_ops.to_find_new_threads = remote_threads_info;
remote_ops.to_stop = remote_stop;
remote_ops.to_query = remote_query;
+ remote_ops.to_rcmd = remote_rcmd;
remote_ops.to_stratum = process_stratum;
remote_ops.to_has_all_memory = 1;
remote_ops.to_has_memory = 1;
push_target (&remote_cisco_ops); /* Switch to using cisco target now */
init_packet_config (&remote_protocol_P);
+ init_packet_config (&remote_protocol_Z);
general_thread = -2;
continue_thread = -2;
/* Force remote_write_bytes to check whether target supports
binary downloading. */
- remote_binary_checked = 0;
+ init_packet_config (&remote_protocol_binary_download);
/* Without this, some commands which require an active target (such
as kill) won't work. This variable serves (at least) double duty
static int
readtty ()
{
- int status;
int tty_bytecount;
/* First, read a buffer full from the terminal */
FD_ZERO (&input);
FD_SET (fileno (stdin), &input);
- FD_SET (remote_desc->fd, &input);
+ FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input);
status = select (tablesize, &input, 0, 0, 0);
if ((status == -1) && (errno != EINTR))
remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint;
remote_async_ops.to_kill = remote_async_kill;
remote_async_ops.to_load = generic_load;
- remote_async_ops.to_mourn_inferior = remote_mourn;
+ remote_async_ops.to_mourn_inferior = remote_async_mourn;
remote_async_ops.to_thread_alive = remote_thread_alive;
remote_async_ops.to_find_new_threads = remote_threads_info;
remote_async_ops.to_stop = remote_stop;
remote_async_ops.to_query = remote_query;
+ remote_async_ops.to_rcmd = remote_rcmd;
remote_async_ops.to_stratum = process_stratum;
remote_async_ops.to_has_all_memory = 1;
remote_async_ops.to_has_memory = 1;
Remote protocol specific variables\n\
Configure various remote-protocol specific variables such as\n\
the packets being used",
- &remote_set_cmdlist, "remote ",
+ &remote_set_cmdlist, "set remote ",
0/*allow-unknown*/, &setlist);
add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\
Remote protocol specific variables\n\
Configure various remote-protocol specific variables such as\n\
the packets being used",
- &remote_show_cmdlist, "remote ",
+ &remote_show_cmdlist, "show remote ",
0/*allow-unknown*/, &showlist);
add_cmd ("compare-sections", class_obscure, compare_sections_command,
&setlist),
&showlist);
+ add_packet_config_cmd (&remote_protocol_binary_download,
+ "X", "binary-download",
+ set_remote_protocol_binary_download_cmd,
+ show_remote_protocol_binary_download_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist);
+#if 0
+ /* XXXX - should ``set remotebinarydownload'' be retained for
+ compatibility. */
add_show_from_set
(add_set_cmd ("remotebinarydownload", no_class,
var_boolean, (char *) &remote_binary_download,
"Set binary downloads.\n", &setlist),
&showlist);
+#endif
add_info ("remote-process", remote_info_process,
"Query the remote system for process info.");
set_remote_protocol_P_packet_cmd,
show_remote_protocol_P_packet_cmd,
&remote_set_cmdlist, &remote_show_cmdlist);
+
+ add_packet_config_cmd (&remote_protocol_Z, "Z", "breakpoint",
+ set_remote_protocol_Z_packet_cmd,
+ show_remote_protocol_Z_packet_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist);
}
projects / thirdparty / binutils-gdb.git / blobdiff