/* Remote target communications for serial-line targets in custom GDB protocol
- Copyright 1988, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1988, 91, 92, 93, 94, 95, 96, 97, 1998
+ Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Remote communication protocol.
$ <data> # CSUM1 CSUM2
<data> must be ASCII alphanumeric and cannot include characters
- '$' or '#'
+ '$' 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.
- - if CSUM is incorrect
<data> is as follows:
- All values are encoded in ascii hex digits.
+ 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.
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
where only part of the data was
written).
- cont cAA..AA AA..AA is address to resume
+ 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.
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"
+ It is SAA AA is the signal number.
- or... TAAn...:r...;n:r...;n...:r...;
+ or... TAAn...:r...;n...:r...;n...:r...;
AA = signal number
- n... = register number
- r... = register contents
- or... WAA The process extited, and AA is
+ 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... NAATT;DD;BB Relocate the object file.
+ or... XAA The process terminated with signal
+ AA.
+ or (obsolete) NAA;tttttttt;dddddddd;bbbbbbbb
AA = signal number
- TT = text address
- DD = data address
- BB = bss address
- This is used by the NLM stub,
- which is why it only has three
- addresses rather than one per
- section: the NLM stub always
- sees only three sections, even
- though gdb may see more.
+ 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
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". */
#include "defs.h"
-#include <string.h>
+#include "gdb_string.h"
+#include <ctype.h>
#include <fcntl.h>
#include "frame.h"
#include "inferior.h"
#include "symfile.h"
#include "target.h"
#include "wait.h"
-#include "terminal.h"
+/*#include "terminal.h"*/
#include "gdbcmd.h"
#include "objfiles.h"
#include "gdb-stabs.h"
+#include "gdbthread.h"
#include "dcache.h"
-#if !defined(DONT_USE_REMOTE)
+#include <ctype.h>
#ifdef USG
#include <sys/types.h>
#endif
/* Prototypes for local functions */
-static int
-remote_write_bytes PARAMS ((CORE_ADDR memaddr, unsigned char *myaddr, int len));
+static void build_remote_gdbarch_data PARAMS ((void));
-static int
-remote_read_bytes PARAMS ((CORE_ADDR memaddr, unsigned char *myaddr, int len));
+static int remote_write_bytes PARAMS ((CORE_ADDR memaddr,
+ char *myaddr, int len));
-static void
-remote_files_info PARAMS ((struct target_ops *ignore));
+static int remote_read_bytes PARAMS ((CORE_ADDR memaddr,
+ char *myaddr, int len));
-static int
-remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
- int should_write, struct target_ops *target));
+static void remote_files_info PARAMS ((struct target_ops *ignore));
-static void
-remote_prepare_to_store PARAMS ((void));
+static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char * myaddr,
+ int len, int should_write,
+ struct target_ops * target));
-static void
-remote_fetch_registers PARAMS ((int regno));
+static void remote_prepare_to_store PARAMS ((void));
-static void
-remote_resume PARAMS ((int pid, int step, int siggnal));
+static void remote_fetch_registers PARAMS ((int regno));
-static int
-remote_start_remote PARAMS ((char *dummy));
+static void remote_resume PARAMS ((int pid, int step,
+ enum target_signal siggnal));
-static void
-remote_open PARAMS ((char *name, int from_tty));
+static int remote_start_remote PARAMS ((PTR));
-static void
-remote_close PARAMS ((int quitting));
+static void remote_open PARAMS ((char *name, int from_tty));
-static void
-remote_store_registers PARAMS ((int regno));
+static void extended_remote_open PARAMS ((char *name, int from_tty));
-static void
-getpkt PARAMS ((char *buf, int forever));
+static void remote_open_1 PARAMS ((char *, int, struct target_ops *,
+ int extended_p));
-static void
-putpkt PARAMS ((char *buf));
+static void remote_close PARAMS ((int quitting));
-static void
-remote_send PARAMS ((char *buf));
+static void remote_store_registers PARAMS ((int regno));
-static int
-readchar PARAMS ((void));
+static void remote_mourn PARAMS ((void));
-static int
-remote_wait PARAMS ((int pid, WAITTYPE *status));
+static void extended_remote_restart PARAMS ((void));
-static int
-tohex PARAMS ((int nib));
+static void extended_remote_mourn PARAMS ((void));
-static int
-fromhex PARAMS ((int a));
+static void extended_remote_create_inferior PARAMS ((char *, char *, char **));
-static void
-remote_detach PARAMS ((char *args, int from_tty));
+static void remote_mourn_1 PARAMS ((struct target_ops *));
-static void
-remote_interrupt PARAMS ((int signo));
+static void remote_send PARAMS ((char *buf));
-static void
-remote_interrupt_twice PARAMS ((int signo));
+static int readchar PARAMS ((int timeout));
-static void
-interrupt_query PARAMS ((void));
+static int remote_wait PARAMS ((int pid, struct target_waitstatus * status));
+
+static void remote_kill PARAMS ((void));
+
+static int tohex PARAMS ((int nib));
+
+static void remote_detach PARAMS ((char *args, int from_tty));
+
+static void remote_interrupt PARAMS ((int signo));
+
+static void remote_interrupt_twice PARAMS ((int signo));
+
+static void interrupt_query PARAMS ((void));
+
+static void set_thread PARAMS ((int, int));
+
+static int remote_thread_alive PARAMS ((int));
+
+static void get_offsets PARAMS ((void));
+
+static int read_frame PARAMS ((char *));
+
+static int remote_insert_breakpoint PARAMS ((CORE_ADDR, char *));
+
+static int remote_remove_breakpoint PARAMS ((CORE_ADDR, char *));
+
+static int hexnumlen PARAMS ((ULONGEST num));
+
+static void init_remote_ops PARAMS ((void));
+
+static void init_extended_remote_ops PARAMS ((void));
+
+static void init_remote_cisco_ops PARAMS ((void));
+
+static struct target_ops remote_cisco_ops;
+
+static void remote_stop PARAMS ((void));
+
+static int ishex PARAMS ((int ch, int *val));
+
+static int stubhex PARAMS ((int ch));
+
+static int remote_query PARAMS ((int/*char*/, char *, char *, int *));
+
+static int hexnumstr PARAMS ((char *, ULONGEST));
+
+static CORE_ADDR remote_address_masked PARAMS ((CORE_ADDR));
+
+static void print_packet PARAMS ((char *));
+
+static unsigned long crc32 PARAMS ((unsigned char *, int, unsigned int));
+
+static void compare_sections_command PARAMS ((char *, int));
+
+static void packet_command PARAMS ((char *, int));
+
+static int stub_unpack_int PARAMS ((char *buff, int fieldlength));
-extern struct target_ops remote_ops; /* Forward decl */
+static int remote_current_thread PARAMS ((int oldpid));
+
+static void remote_find_new_threads PARAMS ((void));
+
+static void record_currthread PARAMS ((int currthread));
+
+/* exported functions */
+
+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));
+
+/* Define the target subroutine names */
+
+void open_remote_target PARAMS ((char *, int, struct target_ops *, int));
+
+void _initialize_remote PARAMS ((void));
+
+/* */
+
+static struct target_ops remote_ops;
+
+static struct target_ops extended_remote_ops;
/* This was 5 seconds, which is a long time to sit and wait.
Unless this is going though some terminal server or multiplexer or
other form of hairy serial connection, I would think 2 seconds would
be plenty. */
-static int timeout = 2;
-#if 0
-int icache;
-#endif
+/* Changed to allow option to set timeout value.
+ was static int remote_timeout = 2; */
+extern int remote_timeout;
+
+/* 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. */
+
+static int remote_break;
/* 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. */
-serial_t remote_desc = NULL;
+static serial_t remote_desc = NULL;
+
+/* This is set by the target (thru the 'S' message)
+ 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)
/* Having this larger than 400 causes us to be incompatible with m68k-stub.c
and i386-stub.c. Normally, no one would notice because it only matters
for writing large chunks of memory (e.g. in downloads). Also, this needs
to be more than 400 if required to hold the registers (see below, where
we round it up based on REGISTER_BYTES). */
-#define PBUFSIZ 400
-
-/* 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 ((PBUFSIZ-32)/2)
-
/* Round up PBUFSIZ to hold all the registers, at least. */
-#if REGISTER_BYTES > MAXBUFBYTES
-#undef PBUFSIZ
-#define PBUFSIZ (REGISTER_BYTES * 2 + 32)
-#endif
-\f
-/* Clean up connection to a remote debugger. */
-
-/* ARGSUSED */
-static void
-remote_close (quitting)
- int quitting;
-{
- if (remote_desc)
- SERIAL_CLOSE (remote_desc);
- remote_desc = NULL;
-}
+#define PBUFSIZ ((REGISTER_BYTES > MAXBUFBYTES (400)) \
+ ? (REGISTER_BYTES * 2 + 32) \
+ : 400)
-/* Stub for catch_errors. */
-static int
-remote_start_remote (dummy)
- char *dummy;
-{
- immediate_quit = 1; /* Allow user to interrupt it */
+/* This variable sets the number of bytes to be written to the target
+ in a single packet. Normally PBUFSIZ is satisfactory, but some
+ targets need smaller values (perhaps because the receiving end
+ is slow). */
- /* Ack any packet which the remote side has already sent. */
- /* I'm not sure this \r is needed; we don't use it any other time we
- send an ack. */
- SERIAL_WRITE (remote_desc, "+\r", 2);
- putpkt ("?"); /* initiate a query from remote machine */
- immediate_quit = 0;
+static int remote_write_size;
- start_remote (); /* Initialize gdb process mechanisms */
- return 1;
-}
+/* This variable sets the number of bits in an address that are to be
+ sent in a memory ("M" or "m") packet. Normally, after stripping
+ leading zeros, the entire address would be sent. This variable
+ restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
+ initial implementation of remote.c restricted the address sent in
+ memory packets to ``host::sizeof long'' bytes - (typically 32
+ bits). Consequently, for 64 bit targets, the upper 32 bits of an
+ address was never sent. Since fixing this bug may cause a break in
+ some remote targets this variable is principly provided to
+ facilitate backward compatibility. */
-/* Open a connection to a remote debugger.
- NAME is the filename used for communication. */
+static int remote_address_size;
-static DCACHE *remote_dcache;
+/* This is the size (in chars) of the first response to the `g' command. This
+ is used to limit the size of the memory read and write commands to prevent
+ stub buffers from overflowing. The size does not include headers and
+ trailers, it is only the payload size. */
-static void
-remote_open (name, from_tty)
- char *name;
- int from_tty;
-{
- if (name == 0)
- error (
-"To open a remote debug connection, you need to specify what serial\n\
-device is attached to the remote system (e.g. /dev/ttya).");
+static int remote_register_buf_size = 0;
- target_preopen (from_tty);
+/* Should we try the 'P' request? If this is set to one when the stub
+ doesn't support 'P', the only consequence is some unnecessary traffic. */
+static int stub_supports_P = 1;
- unpush_target (&remote_ops);
+/* These are pointers to hook functions that may be set in order to
+ modify resume/wait behavior for a particular architecture. */
- remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes);
+void (*target_resume_hook) PARAMS ((void));
+void (*target_wait_loop_hook) PARAMS ((void));
- remote_desc = SERIAL_OPEN (name);
- if (!remote_desc)
- perror_with_name (name);
+\f
- if (SERIAL_SETBAUDRATE (remote_desc, baud_rate))
- {
- SERIAL_CLOSE (remote_desc);
- perror_with_name (name);
- }
+/* These are the threads which we last sent to the remote system.
+ -1 for all or -2 for not sent yet. */
+static int general_thread;
+static int continue_thread;
- SERIAL_RAW (remote_desc);
+/* 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
+ */
- /* If there is something sitting in the buffer we might take it as a
- response to a command, which would be bad. */
- SERIAL_FLUSH_INPUT (remote_desc);
+static void
+record_currthread (currthread)
+ int currthread;
+{
+ general_thread = currthread;
- if (from_tty)
+ /* 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))
{
- puts_filtered ("Remote debugging using ");
- puts_filtered (name);
- puts_filtered ("\n");
+ add_thread (currthread);
+ printf_filtered ("[New %s]\n", target_pid_to_str (currthread));
}
- push_target (&remote_ops); /* Switch to using remote target now */
-
- /* Start the remote connection; if error (0), discard this target.
- In particular, if the user quits, be sure to discard it
- (we'd be in an inconsistent state otherwise). */
- if (!catch_errors (remote_start_remote, (char *)0,
- "Couldn't establish connection to remote target\n", RETURN_MASK_ALL))
- pop_target();
}
-/* remote_detach()
- takes a program previously attached to and detaches it.
- We better not have left any breakpoints
- in the program or it'll die when it hits one.
- Close the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
+#define MAGIC_NULL_PID 42000
static void
-remote_detach (args, from_tty)
- char *args;
- int from_tty;
+set_thread (th, gen)
+ int th;
+ int gen;
{
- if (args)
- error ("Argument given to \"detach\" when remotely debugging.");
-
- pop_target ();
- if (from_tty)
- puts_filtered ("Ending remote debugging.\n");
-}
+ char buf[PBUFSIZ];
+ int state = gen ? general_thread : continue_thread;
-/* Convert hex digit A to a number. */
+ if (state == th)
+ return;
-static int
-fromhex (a)
- int a;
-{
- if (a >= '0' && a <= '9')
- return a - '0';
- else if (a >= 'a' && a <= 'f')
- return a - 'a' + 10;
+ buf[0] = 'H';
+ buf[1] = gen ? 'g' : 'c';
+ if (th == MAGIC_NULL_PID)
+ {
+ buf[2] = '0';
+ buf[3] = '\0';
+ }
+ else if (th < 0)
+ sprintf (&buf[2], "-%x", -th);
else
- error ("Reply contains invalid hex digit");
- return -1;
+ sprintf (&buf[2], "%x", th);
+ putpkt (buf);
+ getpkt (buf, 0);
+ if (gen)
+ general_thread = th;
+ else
+ continue_thread = th;
}
-
-/* Convert number NIB to a hex digit. */
+\f
+/* Return nonzero if the thread TH is still alive on the remote system. */
static int
-tohex (nib)
- int nib;
+remote_thread_alive (tid)
+ int tid;
{
- if (nib < 10)
- return '0'+nib;
+ char buf[16];
+
+ if (tid < 0)
+ sprintf (buf, "T-%08x", -tid);
else
- return 'a'+nib-10;
+ sprintf (buf, "T%08x", tid);
+ putpkt (buf);
+ getpkt (buf, 0);
+ return (buf[0] == 'O' && buf[1] == 'K');
}
-\f
-/* Tell the remote machine to resume. */
-static void
-remote_resume (pid, step, siggnal)
- int pid, step, siggnal;
-{
- char buf[PBUFSIZ];
+/* About these extended threadlist and threadinfo packets. They are
+ variable length packets but, the fields within them are often fixed
+ length. They are redundent enough to send over UDP as is the
+ remote protocol in general. There is a matching unit test module
+ in libstub. */
- if (siggnal)
- {
- char *name;
- target_terminal_ours_for_output ();
- printf_filtered ("Can't send signals to a remote system. ");
- name = strsigno (siggnal);
- if (name)
- printf_filtered (name);
- else
- printf_filtered ("Signal %d", siggnal);
- printf_filtered (" not sent.\n");
- target_terminal_inferior ();
- }
+#define OPAQUETHREADBYTES 8
- dcache_flush (remote_dcache);
+/* a 64 bit opaque identifier */
+typedef unsigned char threadref[OPAQUETHREADBYTES];
- strcpy (buf, step ? "s": "c");
+/* WARNING: This threadref data structure comes from the remote O.S., libstub
+ protocol encoding, and remote.c. it is not particularly changable */
- putpkt (buf);
-}
-\f
-/* Send ^C to target to halt it. Target will respond, and send us a
- packet. */
+/* Right now, the internal structure is int. We want it to be bigger.
+ Plan to fix this.
+ */
-static void
-remote_interrupt (signo)
- int signo;
+typedef int gdb_threadref; /* internal GDB thread reference */
+
+/* gdb_ext_thread_info is an internal GDB data structure which is
+ equivalint to the reply of the remote threadinfo packet */
+
+struct gdb_ext_thread_info
{
- /* If this doesn't work, try more severe steps. */
- signal (signo, remote_interrupt_twice);
-
- if (remote_debug)
- printf_unfiltered ("remote_interrupt called\n");
+ threadref threadid; /* External form of thread reference */
+ int active; /* Has state interesting to GDB? , regs, stack */
+ char display[256]; /* Brief state display, name, blocked/syspended */
+ char shortname[32]; /* To be used to name threads */
+ char more_display[256]; /* Long info, statistics, queue depth, whatever */
+};
- SERIAL_WRITE (remote_desc, "\003", 1); /* Send a ^C */
-}
+/* The volume of remote transfers can be limited by submitting
+ a mask containing bits specifying the desired information.
+ Use a union of these values as the 'selection' parameter to
+ get_thread_info. FIXME: Make these TAG names more thread specific.
+ */
-static void (*ofunc)();
+#define TAG_THREADID 1
+#define TAG_EXISTS 2
+#define TAG_DISPLAY 4
+#define TAG_THREADNAME 8
+#define TAG_MOREDISPLAY 16
-/* The user typed ^C twice. */
-static void
-remote_interrupt_twice (signo)
- int signo;
-{
- signal (signo, ofunc);
-
- interrupt_query ();
+#define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
- signal (signo, remote_interrupt);
-}
+char *unpack_varlen_hex PARAMS ((char *buff, int *result));
-/* Ask the user what to do when an interrupt is received. */
+static char *unpack_nibble PARAMS ((char *buf, int *val));
-static void
-interrupt_query ()
-{
- target_terminal_ours ();
+static char *pack_nibble PARAMS ((char *buf, int nibble));
- if (query ("Interrupted while waiting for the program.\n\
-Give up (and stop debugging it)? "))
- {
- target_mourn_inferior ();
- return_to_top_level (RETURN_QUIT);
- }
+static char *pack_hex_byte PARAMS ((char *pkt, int/*unsigned char*/ byte));
- target_terminal_inferior ();
-}
+static char *unpack_byte PARAMS ((char *buf, int *value));
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would.
- Returns "pid" (though it's not clear what, if anything, that
- means in the case of this target). */
+static char *pack_int PARAMS ((char *buf, int value));
-static int
-remote_wait (pid, status)
- int pid;
- WAITTYPE *status;
-{
- unsigned char buf[PBUFSIZ];
+static char *unpack_int PARAMS ((char *buf, int *value));
- WSETEXIT ((*status), 0);
+static char *unpack_string PARAMS ((char *src, char *dest, int length));
- while (1)
- {
- unsigned char *p;
+static char *pack_threadid PARAMS ((char *pkt, threadref *id));
- ofunc = (void (*)()) signal (SIGINT, remote_interrupt);
- getpkt ((char *) buf, 1);
- signal (SIGINT, ofunc);
+static char *unpack_threadid PARAMS ((char *inbuf, threadref *id));
- if (buf[0] == 'E')
- warning ("Remote failure reply: %s", buf);
- else if (buf[0] == 'T')
- {
- int i;
- long regno;
- char regs[MAX_REGISTER_RAW_SIZE];
+void int_to_threadref PARAMS ((threadref *id, int value));
- /* 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
- */
+static int threadref_to_int PARAMS ((threadref *ref));
- p = &buf[3]; /* after Txx */
+static void copy_threadref PARAMS ((threadref *dest, threadref *src));
- while (*p)
- {
- unsigned char *p1;
+static int threadmatch PARAMS ((threadref *dest, threadref *src));
- regno = strtol (p, &p1, 16); /* Read the register number */
+static char *pack_threadinfo_request PARAMS ((char *pkt, int mode,
+ threadref *id));
- if (p1 == p)
- warning ("Remote sent badly formed register number: %s\nPacket: '%s'\n",
- p1, buf);
+static int remote_unpack_thread_info_response PARAMS ((char *pkt,
+ threadref *expectedref,
+ struct gdb_ext_thread_info *info));
- p = p1;
- if (*p++ != ':')
- warning ("Malformed packet (missing colon): %s\nPacket: '%s'\n",
- p, buf);
+static int remote_get_threadinfo PARAMS ((threadref *threadid,
+ int fieldset, /*TAG mask */
+ struct gdb_ext_thread_info *info));
- if (regno >= NUM_REGS)
- warning ("Remote sent bad register number %d: %s\nPacket: '%s'\n",
- regno, p, buf);
+static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref *ref,
+ int selection,
+ struct gdb_ext_thread_info *info));
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i++)
- {
- if (p[0] == 0 || p[1] == 0)
- warning ("Remote reply is too short: %s", buf);
- regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
- p += 2;
- }
+static char *pack_threadlist_request PARAMS ((char *pkt, int startflag,
+ int threadcount,
+ threadref *nextthread));
- if (*p++ != ';')
- warning ("Remote register badly formatted: %s", buf);
+static int parse_threadlist_response PARAMS ((char *pkt,
+ int result_limit,
+ threadref *original_echo,
+ threadref *resultlist,
+ int *doneflag));
- supply_register (regno, regs);
- }
- break;
- }
- else if (buf[0] == 'N')
- {
- unsigned char *p1;
- bfd_vma text_addr, data_addr, bss_addr;
-
- /* Relocate object file. Format is NAATT;DD;BB where AA is
- the signal number, TT is the new text address, DD is the
- new data address, and BB is the new bss address. This is
- used by the NLM stub; gdb may see more sections. */
- p = &buf[3];
- text_addr = strtoul (p, &p1, 16);
- if (p1 == p || *p1 != ';')
- warning ("Malformed relocation packet: Packet '%s'", buf);
- p = p1 + 1;
- data_addr = strtoul (p, &p1, 16);
- if (p1 == p || *p1 != ';')
- warning ("Malformed relocation packet: Packet '%s'", buf);
- p = p1 + 1;
- bss_addr = strtoul (p, &p1, 16);
- if (p1 == p)
- warning ("Malformed relocation packet: Packet '%s'", buf);
-
- if (symfile_objfile != NULL
- && (ANOFFSET (symfile_objfile->section_offsets,
- SECT_OFF_TEXT) != text_addr
- || ANOFFSET (symfile_objfile->section_offsets,
- SECT_OFF_DATA) != data_addr
- || ANOFFSET (symfile_objfile->section_offsets,
- SECT_OFF_BSS) != bss_addr))
- {
- struct section_offsets *offs;
-
- /* FIXME: This code assumes gdb-stabs.h is being used;
- it's broken for xcoff, dwarf, sdb-coff, etc. But
- there is no simple canonical representation for this
- stuff. (Just what does "text" as seen by the stub
- mean, anyway?). */
-
- 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))));
- ANOFFSET (offs, SECT_OFF_TEXT) = text_addr;
- ANOFFSET (offs, SECT_OFF_DATA) = data_addr;
- ANOFFSET (offs, SECT_OFF_BSS) = bss_addr;
-
- objfile_relocate (symfile_objfile, offs);
- {
- struct obj_section *s;
- bfd *abfd;
+static int remote_get_threadlist PARAMS ((int startflag,
+ threadref *nextthread,
+ int result_limit,
+ int *done,
+ int *result_count,
+ threadref *threadlist));
- abfd = symfile_objfile->obfd;
+typedef int (*rmt_thread_action) (threadref *ref, void *context);
- for (s = symfile_objfile->sections;
- s < symfile_objfile->sections_end; ++s)
- {
- flagword flags;
+static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction,
+ void *context, int looplimit));
- flags = bfd_get_section_flags (abfd, s->sec_ptr);
+static int remote_newthread_step PARAMS ((threadref *ref, void *context));
- if (flags & SEC_CODE)
- {
- s->addr += text_addr;
- s->endaddr += text_addr;
- }
- else if (flags & (SEC_DATA | SEC_LOAD))
- {
- s->addr += data_addr;
- s->endaddr += data_addr;
- }
- else if (flags & SEC_ALLOC)
- {
- s->addr += bss_addr;
- s->endaddr += bss_addr;
- }
- }
- }
- }
- break;
- }
- else if (buf[0] == 'W')
- {
- /* The remote process exited. */
- WSETEXIT (*status, (fromhex (buf[1]) << 4) + fromhex (buf[2]));
- return 0;
- }
- else if (buf[0] == 'S')
- break;
- else
- warning ("Invalid remote reply: %s", buf);
- }
+/* encode 64 bits in 16 chars of hex */
- WSETSTOP ((*status), (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))));
+static const char hexchars[] = "0123456789abcdef";
+static int
+ishex (ch, val)
+ int ch;
+ int *val;
+{
+ if ((ch >= 'a') && (ch <= 'f'))
+ {
+ *val = ch - 'a' + 10;
+ return 1;
+ }
+ if ((ch >= 'A') && (ch <= 'F'))
+ {
+ *val = ch - 'A' + 10;
+ return 1;
+ }
+ if ((ch >= '0') && (ch <= '9'))
+ {
+ *val = ch - '0';
+ return 1;
+ }
return 0;
}
-/* Number of bytes of registers this stub implements. */
-static int register_bytes_found;
-
-/* Read the remote registers into the block REGS. */
-/* Currently we just read all the registers, so we don't use regno. */
-/* ARGSUSED */
-static void
-remote_fetch_registers (regno)
- int regno;
+static int
+stubhex (ch)
+ int ch;
{
- char buf[PBUFSIZ];
- int i;
- char *p;
- char regs[REGISTER_BYTES];
-
- sprintf (buf, "g");
- remote_send (buf);
+ if (ch >= 'a' && ch <= 'f')
+ return ch - 'a' + 10;
+ if (ch >= '0' && ch <= '9')
+ return ch - '0';
+ if (ch >= 'A' && ch <= 'F')
+ return ch - 'A' + 10;
+ return -1;
+}
- /* Unimplemented registers read as all bits zero. */
- memset (regs, 0, REGISTER_BYTES);
+static int
+stub_unpack_int (buff, fieldlength)
+ char *buff;
+ int fieldlength;
+{
+ int nibble;
+ int retval = 0;
- /* We can get out of synch in various cases. If the first character
- in the buffer is not a hex character, assume that has happened
- and try to fetch another packet to read. */
- while ((buf[0] < '0' || buf[0] > '9')
- && (buf[0] < 'a' || buf[0] > 'f'))
+ while (fieldlength)
{
- if (remote_debug)
- printf_unfiltered ("Bad register packet; fetching a new packet\n");
- getpkt (buf, 0);
+ nibble = stubhex (*buff++);
+ retval |= nibble;
+ fieldlength--;
+ if (fieldlength)
+ retval = retval << 4;
}
+ return retval;
+}
- /* Reply describes registers byte by byte, each byte encoded as two
- hex characters. Suck them all up, then supply them to the
- register cacheing/storage mechanism. */
+char *
+unpack_varlen_hex (buff, result)
+ char *buff; /* packet to parse */
+ int *result;
+{
+ int nibble;
+ int retval = 0;
- p = buf;
- for (i = 0; i < REGISTER_BYTES; i++)
+ while (ishex (*buff, &nibble))
{
- if (p[0] == 0)
- break;
- if (p[1] == 0)
- {
- warning ("Remote reply is of odd length: %s", buf);
- /* Don't change register_bytes_found in this case, and don't
- print a second warning. */
- goto supply_them;
- }
- regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
- p += 2;
+ buff++;
+ retval = retval << 4;
+ retval |= nibble & 0x0f;
}
+ *result = retval;
+ return buff;
+}
- if (i != register_bytes_found)
- {
- register_bytes_found = i;
-#ifdef REGISTER_BYTES_OK
- if (!REGISTER_BYTES_OK (i))
- warning ("Remote reply is too short: %s", buf);
-#endif
- }
+static char *
+unpack_nibble (buf, val)
+ char *buf;
+ int *val;
+{
+ ishex (*buf++, val);
+ return buf;
+}
- supply_them:
- for (i = 0; i < NUM_REGS; i++)
- supply_register (i, ®s[REGISTER_BYTE(i)]);
+static char *
+pack_nibble (buf, nibble)
+ char *buf;
+ int nibble;
+{
+ *buf++ = hexchars[(nibble & 0x0f)];
+ return buf;
}
-/* Prepare to store registers. Since we send them all, we have to
- read out the ones we don't want to change first. */
+static char *
+pack_hex_byte (pkt, byte)
+ char *pkt;
+ int byte;
+{
+ *pkt++ = hexchars[(byte >> 4) & 0xf];
+ *pkt++ = hexchars[(byte & 0xf)];
+ return pkt;
+}
-static void
-remote_prepare_to_store ()
+static char *
+unpack_byte (buf, value)
+ char *buf;
+ int *value;
{
- /* Make sure the entire registers array is valid. */
- read_register_bytes (0, (char *)NULL, REGISTER_BYTES);
+ *value = stub_unpack_int (buf, 2);
+ return buf + 2;
}
-/* Store the remote registers from the contents of the block REGISTERS.
- FIXME, eventually just store one register if that's all that is needed. */
+static char *
+pack_int (buf, value)
+ char *buf;
+ int value;
+{
+ buf = pack_hex_byte (buf, (value >> 24) & 0xff);
+ buf = pack_hex_byte (buf, (value >> 16) & 0xff);
+ buf = pack_hex_byte (buf, (value >> 8) & 0x0ff);
+ buf = pack_hex_byte (buf, (value & 0xff));
+ return buf;
+}
-/* ARGSUSED */
-static void
-remote_store_registers (regno)
- int regno;
+static char *
+unpack_int (buf, value)
+ char *buf;
+ int *value;
{
- char buf[PBUFSIZ];
- int i;
- char *p;
+ *value = stub_unpack_int (buf, 8);
+ return buf + 8;
+}
- buf[0] = 'G';
-
- /* Command describes registers byte by byte,
- each byte encoded as two hex characters. */
+#if 0 /* currently unused, uncomment when needed */
+static char *pack_string PARAMS ((char *pkt, char *string));
- p = buf + 1;
- /* remote_prepare_to_store insures that register_bytes_found gets set. */
- for (i = 0; i < register_bytes_found; i++)
+static char *
+pack_string (pkt, string)
+ char *pkt;
+ char *string;
+{
+ char ch;
+ int len;
+
+ len = strlen (string);
+ if (len > 200)
+ len = 200; /* Bigger than most GDB packets, junk??? */
+ pkt = pack_hex_byte (pkt, len);
+ while (len-- > 0)
{
- *p++ = tohex ((registers[i] >> 4) & 0xf);
- *p++ = tohex (registers[i] & 0xf);
+ ch = *string++;
+ if ((ch == '\0') || (ch == '#'))
+ ch = '*'; /* Protect encapsulation */
+ *pkt++ = ch;
}
- *p = '\0';
-
- remote_send (buf);
+ return pkt;
}
+#endif /* 0 (unused) */
-#if 0
+static char *
+unpack_string (src, dest, length)
+ char *src;
+ char *dest;
+ int length;
+{
+ while (length--)
+ *dest++ = *src++;
+ *dest = '\0';
+ return src;
+}
-/* Use of the data cache is disabled because it loses for looking at
- and changing hardware I/O ports and the like. Accepting `volatile'
- would perhaps be one way to fix it, but a better way which would
- win for more cases would be to use the executable file for the text
- segment, like the `icache' code below but done cleanly (in some
- target-independent place, perhaps in target_xfer_memory, perhaps
- based on assigning each target a speed or perhaps by some simpler
- mechanism). */
+static char *
+pack_threadid (pkt, id)
+ char *pkt;
+ threadref *id;
+{
+ char *limit;
+ unsigned char *altid;
+
+ altid = (unsigned char *) id;
+ limit = pkt + BUF_THREAD_ID_SIZE;
+ while (pkt < limit)
+ pkt = pack_hex_byte (pkt, *altid++);
+ return pkt;
+}
-/* Read a word from remote address ADDR and return it.
- This goes through the data cache. */
-static int
-remote_fetch_word (addr)
- CORE_ADDR addr;
+static char *
+unpack_threadid (inbuf, id)
+ char *inbuf;
+ threadref *id;
{
-#if 0
- if (icache)
- {
- extern CORE_ADDR text_start, text_end;
+ char *altref;
+ char *limit = inbuf + BUF_THREAD_ID_SIZE;
+ int x, y;
- if (addr >= text_start && addr < text_end)
- {
- int buffer;
- xfer_core_file (addr, &buffer, sizeof (int));
- return buffer;
- }
+ altref = (char *) id;
+
+ while (inbuf < limit)
+ {
+ x = stubhex (*inbuf++);
+ y = stubhex (*inbuf++);
+ *altref++ = (x << 4) | y;
}
-#endif
- return dcache_fetch (remote_dcache, addr);
+ return inbuf;
}
-/* Write a word WORD into remote address ADDR.
- This goes through the data cache. */
+/* Externally, threadrefs are 64 bits but internally, they are still
+ ints. This is due to a mismatch of specifications. We would like
+ to use 64bit thread references internally. This is an adapter
+ function. */
-static void
-remote_store_word (addr, word)
- CORE_ADDR addr;
- int word;
+void
+int_to_threadref (id, value)
+ threadref *id;
+ int value;
{
- dcache_poke (remote_dcache, addr, word);
+ unsigned char *scan;
+
+ scan = (unsigned char *) id;
+ {
+ int i = 4;
+ while (i--)
+ *scan++ = 0;
+ }
+ *scan++ = (value >> 24) & 0xff;
+ *scan++ = (value >> 16) & 0xff;
+ *scan++ = (value >> 8) & 0xff;
+ *scan++ = (value & 0xff);
}
-#endif /* 0 */
-\f
-/* Write memory data directly to the remote machine.
- This does not inform the data cache; the data cache uses this.
- MEMADDR is the address in the remote memory space.
- MYADDR is the address of the buffer in our space.
- LEN is the number of bytes.
-
- Returns number of bytes transferred, or 0 for error. */
static int
-remote_write_bytes (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
+threadref_to_int (ref)
+ threadref *ref;
+{
+ int i, value = 0;
+ unsigned char *scan;
+
+ scan = (char *) ref;
+ scan += 4;
+ i = 4;
+ while (i-- > 0)
+ value = (value << 8) | ((*scan++) & 0xff);
+ return value;
+}
+
+static void
+copy_threadref (dest, src)
+ threadref *dest;
+ threadref *src;
{
- char buf[PBUFSIZ];
int i;
- char *p;
+ unsigned char *csrc, *cdest;
- sprintf (buf, "M%x,%x:", memaddr, len);
+ csrc = (unsigned char *) src;
+ cdest = (unsigned char *) dest;
+ i = 8;
+ while (i--)
+ *cdest++ = *csrc++;
+}
- /* We send target system values byte by byte, in increasing byte addresses,
- each byte encoded as two hex characters. */
+static int
+threadmatch (dest, src)
+ threadref *dest;
+ threadref *src;
+{
+ /* things are broken right now, so just assume we got a match */
+#if 0
+ unsigned char *srcp, *destp;
+ int i, result;
+ srcp = (char *) src;
+ destp = (char *) dest;
+
+ result = 1;
+ while (i-- > 0)
+ result &= (*srcp++ == *destp++) ? 1 : 0;
+ return result;
+#endif
+ return 1;
+}
- p = buf + strlen (buf);
- for (i = 0; i < len; i++)
- {
- *p++ = tohex ((myaddr[i] >> 4) & 0xf);
- *p++ = tohex (myaddr[i] & 0xf);
+/*
+ threadid:1, # always request threadid
+ context_exists:2,
+ display:4,
+ unique_name:8,
+ more_display:16
+*/
+
+/* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
+
+static char *
+pack_threadinfo_request (pkt, mode, id)
+ char *pkt;
+ int mode;
+ threadref *id;
+{
+ *pkt++ = 'q'; /* Info Query */
+ *pkt++ = 'P'; /* process or thread info */
+ pkt = pack_int (pkt, mode); /* mode */
+ pkt = pack_threadid (pkt, id); /* threadid */
+ *pkt = '\0'; /* terminate */
+ return pkt;
+}
+
+/* These values tag the fields in a thread info response packet */
+/* Tagging the fields allows us to request specific fields and to
+ add more fields as time goes by */
+
+#define TAG_THREADID 1 /* Echo the thread identifier */
+#define TAG_EXISTS 2 /* Is this process defined enough to
+ fetch registers and its stack */
+#define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
+#define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
+#define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
+ the process*/
+
+static int
+remote_unpack_thread_info_response (pkt, expectedref, info)
+ char *pkt;
+ threadref *expectedref;
+ struct gdb_ext_thread_info *info;
+{
+ int mask, length;
+ unsigned int tag;
+ threadref ref;
+ char *limit = pkt + PBUFSIZ; /* plausable parsing limit */
+ int retval = 1;
+
+ /* info->threadid = 0; FIXME: implement zero_threadref */
+ info->active = 0;
+ info->display[0] = '\0';
+ info->shortname[0] = '\0';
+ info->more_display[0] = '\0';
+
+ /* Assume the characters indicating the packet type have been stripped */
+ pkt = unpack_int (pkt, &mask); /* arg mask */
+ pkt = unpack_threadid (pkt, &ref);
+
+ if (mask == 0)
+ warning ("Incomplete response to threadinfo request\n");
+ if (!threadmatch (&ref, expectedref))
+ { /* This is an answer to a different request */
+ warning ("ERROR RMT Thread info mismatch\n");
+ return 0;
}
- *p = '\0';
+ copy_threadref (&info->threadid, &ref);
- putpkt (buf);
- getpkt (buf, 0);
+ /* Loop on tagged fields , try to bail if somthing goes wrong */
- if (buf[0] == 'E')
+ while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */
{
- /* There is no correspondance between what the remote protocol uses
- for errors and errno codes. We would like a cleaner way of
- representing errors (big enough to include errno codes, bfd_error
- codes, and others). But for now just return EIO. */
- errno = EIO;
- return 0;
+ pkt = unpack_int (pkt, &tag); /* tag */
+ pkt = unpack_byte (pkt, &length); /* length */
+ if (!(tag & mask)) /* tags out of synch with mask */
+ {
+ warning ("ERROR RMT: threadinfo tag mismatch\n");
+ retval = 0;
+ break;
+ }
+ if (tag == TAG_THREADID)
+ {
+ if (length != 16)
+ {
+ warning ("ERROR RMT: length of threadid is not 16\n");
+ retval = 0;
+ break;
+ }
+ pkt = unpack_threadid (pkt, &ref);
+ mask = mask & ~TAG_THREADID;
+ continue;
+ }
+ if (tag == TAG_EXISTS)
+ {
+ info->active = stub_unpack_int (pkt, length);
+ pkt += length;
+ mask = mask & ~(TAG_EXISTS);
+ if (length > 8)
+ {
+ warning ("ERROR RMT: 'exists' length too long\n");
+ retval = 0;
+ break;
+ }
+ continue;
+ }
+ if (tag == TAG_THREADNAME)
+ {
+ pkt = unpack_string (pkt, &info->shortname[0], length);
+ mask = mask & ~TAG_THREADNAME;
+ continue;
+ }
+ if (tag == TAG_DISPLAY)
+ {
+ pkt = unpack_string (pkt, &info->display[0], length);
+ mask = mask & ~TAG_DISPLAY;
+ continue;
+ }
+ if (tag == TAG_MOREDISPLAY)
+ {
+ pkt = unpack_string (pkt, &info->more_display[0], length);
+ mask = mask & ~TAG_MOREDISPLAY;
+ continue;
+ }
+ warning ("ERROR RMT: unknown thread info tag\n");
+ break; /* Not a tag we know about */
}
- return len;
+ return retval;
}
-/* Read memory data directly from the remote machine.
- This does not use the data cache; the data cache uses this.
- MEMADDR is the address in the remote memory space.
- MYADDR is the address of the buffer in our space.
- LEN is the number of bytes.
+static int
+remote_get_threadinfo (threadid, fieldset, info)
+ threadref *threadid;
+ int fieldset; /* TAG mask */
+ struct gdb_ext_thread_info *info;
+{
+ int result;
+ char threadinfo_pkt[PBUFSIZ];
+
+ pack_threadinfo_request (threadinfo_pkt, fieldset, threadid);
+ putpkt (threadinfo_pkt);
+ getpkt (threadinfo_pkt, 0);
+ result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid,
+ info);
+ return result;
+}
- Returns number of bytes transferred, or 0 for error. */
+/* Unfortunately, 61 bit thread-ids are bigger than the internal
+ representation of a threadid. */
static int
-remote_read_bytes (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
+adapt_remote_get_threadinfo (ref, selection, info)
+ gdb_threadref *ref;
+ int selection;
+ struct gdb_ext_thread_info *info;
{
- char buf[PBUFSIZ];
- int i;
- char *p;
+ threadref lclref;
- if (len > PBUFSIZ / 2 - 1)
- abort ();
+ int_to_threadref (&lclref, *ref);
+ return remote_get_threadinfo (&lclref, selection, info);
+}
- sprintf (buf, "m%x,%x", memaddr, len);
- putpkt (buf);
- getpkt (buf, 0);
+/* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
- if (buf[0] == 'E')
- {
- /* There is no correspondance between what the remote protocol uses
- for errors and errno codes. We would like a cleaner way of
- representing errors (big enough to include errno codes, bfd_error
- codes, and others). But for now just return EIO. */
- errno = EIO;
- return 0;
- }
+static char *
+pack_threadlist_request (pkt, startflag, threadcount, nextthread)
+ char *pkt;
+ int startflag;
+ int threadcount;
+ threadref *nextthread;
+{
+ *pkt++ = 'q'; /* info query packet */
+ *pkt++ = 'L'; /* Process LIST or threadLIST request */
+ pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */
+ pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */
+ pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */
+ *pkt = '\0';
+ return pkt;
+}
- /* Reply describes memory byte by byte,
- each byte encoded as two hex characters. */
+/* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
- p = buf;
- for (i = 0; i < len; i++)
+static int
+parse_threadlist_response (pkt, result_limit, original_echo, resultlist,
+ doneflag)
+ char *pkt;
+ int result_limit;
+ threadref *original_echo;
+ threadref *resultlist;
+ int *doneflag;
+{
+ char *limit;
+ int count, resultcount, done;
+
+ resultcount = 0;
+ /* Assume the 'q' and 'M chars have been stripped. */
+ limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */
+ pkt = unpack_byte (pkt, &count); /* count field */
+ pkt = unpack_nibble (pkt, &done);
+ /* The first threadid is the argument threadid. */
+ pkt = unpack_threadid (pkt, original_echo); /* should match query packet */
+ while ((count-- > 0) && (pkt < limit))
{
- if (p[0] == 0 || p[1] == 0)
- /* Reply is short. This means that we were able to read only part
- of what we wanted to. */
+ pkt = unpack_threadid (pkt, resultlist++);
+ if (resultcount++ >= result_limit)
break;
- myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
- p += 2;
}
- return i;
+ if (doneflag)
+ *doneflag = done;
+ return resultcount;
}
-\f
-/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
- to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
- nonzero. Returns length of data written or read; 0 for error. */
-/* ARGSUSED */
static int
-remote_xfer_memory(memaddr, myaddr, len, should_write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int should_write;
- struct target_ops *target; /* ignored */
+remote_get_threadlist (startflag, nextthread, result_limit,
+ done, result_count, threadlist)
+ int startflag;
+ threadref *nextthread;
+ int result_limit;
+ int *done;
+ int *result_count;
+ threadref *threadlist;
+
{
- int xfersize;
- int bytes_xferred;
- int total_xferred = 0;
+ static threadref echo_nextthread;
+ char threadlist_packet[PBUFSIZ];
+ char t_response[PBUFSIZ];
+ int result = 1;
- while (len > 0)
+ /* Trancate result limit to be smaller than the packet size */
+ if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ)
+ result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2;
+
+ pack_threadlist_request (threadlist_packet,
+ startflag, result_limit, nextthread);
+ putpkt (threadlist_packet);
+ getpkt (t_response, 0);
+
+ *result_count =
+ parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread,
+ threadlist, done);
+
+ if (!threadmatch (&echo_nextthread, nextthread))
{
- if (len > MAXBUFBYTES)
- xfersize = MAXBUFBYTES;
- else
- xfersize = len;
+ /* FIXME: This is a good reason to drop the packet */
+ /* Possably, there is a duplicate response */
+ /* Possabilities :
+ retransmit immediatly - race conditions
+ retransmit after timeout - yes
+ exit
+ wait for packet, then exit
+ */
+ warning ("HMM: threadlist did not echo arg thread, dropping it\n");
+ return 0; /* I choose simply exiting */
+ }
+ if (*result_count <= 0)
+ {
+ if (*done != 1)
+ {
+ warning ("RMT ERROR : failed to get remote thread list\n");
+ result = 0;
+ }
+ return result; /* break; */
+ }
+ if (*result_count > result_limit)
+ {
+ *result_count = 0;
+ warning ("RMT ERROR: threadlist response longer than requested\n");
+ return 0;
+ }
+ return result;
+}
+
+/* This is the interface between remote and threads, remotes upper interface */
+
+/* remote_find_new_threads retrieves the thread list and for each
+ thread in the list, looks up the thread in GDB's internal list,
+ ading the thread if it does not already exist. This involves
+ getting partial thread lists from the remote target so, polling the
+ quit_flag is required. */
+
+
+/* About this many threadisds fit in a packet. */
+
+#define MAXTHREADLISTRESULTS 32
+
+static int
+remote_threadlist_iterator (stepfunction, context, looplimit)
+ rmt_thread_action stepfunction;
+ void *context;
+ int looplimit;
+{
+ int done, i, result_count;
+ int startflag = 1;
+ int result = 1;
+ int loopcount = 0;
+ static threadref nextthread;
+ static threadref resultthreadlist[MAXTHREADLISTRESULTS];
+
+ done = 0;
+ while (!done)
+ {
+ if (loopcount++ > looplimit)
+ {
+ result = 0;
+ warning ("Remote fetch threadlist -infinite loop-\n");
+ break;
+ }
+ if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS,
+ &done, &result_count, resultthreadlist))
+ {
+ result = 0;
+ break;
+ }
+ /* clear for later iterations */
+ startflag = 0;
+ /* Setup to resume next batch of thread references, set nextthread. */
+ if (result_count >= 1)
+ copy_threadref (&nextthread, &resultthreadlist[result_count - 1]);
+ i = 0;
+ while (result_count--)
+ if (!(result = (*stepfunction) (&resultthreadlist[i++], context)))
+ break;
+ }
+ return result;
+}
+
+static int
+remote_newthread_step (ref, context)
+ threadref *ref;
+ void *context;
+{
+ int pid;
+
+ pid = threadref_to_int (ref);
+ if (!in_thread_list (pid))
+ add_thread (pid);
+ return 1; /* continue iterator */
+}
+
+#define CRAZY_MAX_THREADS 1000
+
+static int
+remote_current_thread (oldpid)
+ int oldpid;
+{
+ char buf[PBUFSIZ];
+
+ putpkt ("qC");
+ getpkt (buf, 0);
+ if (buf[0] == 'Q' && buf[1] == 'C')
+ return strtol (&buf[2], NULL, 16);
+ else
+ return oldpid;
+}
+
+/* Find new threads for info threads command. */
+
+static void
+remote_find_new_threads ()
+{
+ remote_threadlist_iterator (remote_newthread_step, 0,
+ CRAZY_MAX_THREADS);
+ if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */
+ inferior_pid = remote_current_thread (inferior_pid);
+}
+
+static void
+remote_threads_info (void)
+{
+ char buf[PBUFSIZ], *bufp;
+ int tid;
+
+ if (remote_desc == 0) /* paranoia */
+ error ("Command can only be used when connected to the remote target.");
+
+ putpkt ("qfThreadInfo");
+ getpkt (bufp = buf, 0);
+ if (bufp[0] == '\0') /* q packet not recognized! */
+ { /* try old jmetzler method */
+ remote_find_new_threads ();
+ return;
+ }
+ else /* try new 'q' method */
+ while (*bufp++ == 'm') /* reply contains one or more TID */
+ {
+ do {
+ tid = strtol(bufp, &bufp, 16);
+ if (tid != 0 && !in_thread_list (tid))
+ add_thread (tid);
+ } while (*bufp++ == ','); /* comma-separated list */
+ putpkt ("qsThreadInfo");
+ getpkt (bufp = buf, 0);
+ }
+}
+
+\f
+/* Restart the remote side; this is an extended protocol operation. */
+
+static void
+extended_remote_restart ()
+{
+ char buf[PBUFSIZ];
+
+ /* Send the restart command; for reasons I don't understand the
+ remote side really expects a number after the "R". */
+ buf[0] = 'R';
+ sprintf (&buf[1], "%x", 0);
+ putpkt (buf);
+
+ /* Now query for status so this looks just like we restarted
+ gdbserver from scratch. */
+ putpkt ("?");
+ getpkt (buf, 0);
+}
+\f
+/* Clean up connection to a remote debugger. */
+
+/* ARGSUSED */
+static void
+remote_close (quitting)
+ int quitting;
+{
+ if (remote_desc)
+ SERIAL_CLOSE (remote_desc);
+ remote_desc = NULL;
+}
+
+/* Query the remote side for the text, data and bss offsets. */
+
+static void
+get_offsets ()
+{
+ char buf[PBUFSIZ], *ptr;
+ int lose;
+ CORE_ADDR text_addr, data_addr, bss_addr;
+ struct section_offsets *offs;
+
+ putpkt ("qOffsets");
+
+ getpkt (buf, 0);
+
+ if (buf[0] == '\000')
+ return; /* Return silently. Stub doesn't support
+ this command. */
+ if (buf[0] == 'E')
+ {
+ warning ("Remote failure reply: %s", buf);
+ return;
+ }
+
+ /* Pick up each field in turn. This used to be done with scanf, but
+ scanf will make trouble if CORE_ADDR size doesn't match
+ conversion directives correctly. The following code will work
+ with any size of CORE_ADDR. */
+ text_addr = data_addr = bss_addr = 0;
+ ptr = buf;
+ lose = 0;
+
+ if (strncmp (ptr, "Text=", 5) == 0)
+ {
+ ptr += 5;
+ /* Don't use strtol, could lose on big values. */
+ while (*ptr && *ptr != ';')
+ text_addr = (text_addr << 4) + fromhex (*ptr++);
+ }
+ else
+ lose = 1;
+
+ if (!lose && strncmp (ptr, ";Data=", 6) == 0)
+ {
+ ptr += 6;
+ while (*ptr && *ptr != ';')
+ data_addr = (data_addr << 4) + fromhex (*ptr++);
+ }
+ else
+ lose = 1;
+
+ if (!lose && strncmp (ptr, ";Bss=", 5) == 0)
+ {
+ ptr += 5;
+ while (*ptr && *ptr != ';')
+ bss_addr = (bss_addr << 4) + fromhex (*ptr++);
+ }
+ else
+ lose = 1;
+
+ if (lose)
+ error ("Malformed response to offset query, %s", buf);
+
+ if (symfile_objfile == NULL)
+ return;
+
+ 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));
+
+ ANOFFSET (offs, SECT_OFF_TEXT) = text_addr;
+
+ /* This is a temporary kludge to force data and bss to use the same offsets
+ because that's what nlmconv does now. The real solution requires changes
+ to the stub and remote.c that I don't have time to do right now. */
+
+ ANOFFSET (offs, SECT_OFF_DATA) = data_addr;
+ ANOFFSET (offs, SECT_OFF_BSS) = data_addr;
+
+ objfile_relocate (symfile_objfile, offs);
+}
+
+/*
+ * Cisco version of section offsets:
+ *
+ * Instead of having GDB query the target for the section offsets,
+ * Cisco lets the target volunteer the information! It's also in
+ * a different format, so here are the functions that will decode
+ * a section offset packet from a Cisco target.
+ */
+
+/*
+ * Function: remote_cisco_section_offsets
+ *
+ * Returns: zero for success, non-zero for failure
+ */
+
+static int
+remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
+ text_offs, data_offs, bss_offs)
+ bfd_vma text_addr;
+ bfd_vma data_addr;
+ bfd_vma bss_addr;
+ bfd_signed_vma * text_offs;
+ bfd_signed_vma * data_offs;
+ bfd_signed_vma * bss_offs;
+{
+ bfd_vma text_base, data_base, bss_base;
+ struct minimal_symbol *start;
+ asection *sect;
+ bfd * abfd;
+ int len;
+ char *p;
+
+ if (symfile_objfile == NULL)
+ return -1; /* no can do nothin' */
+
+ start = lookup_minimal_symbol ("_start", NULL, NULL);
+ if (start == NULL)
+ return -1; /* Can't find "_start" symbol */
+
+ data_base = bss_base = 0;
+ text_base = SYMBOL_VALUE_ADDRESS (start);
+
+ abfd = symfile_objfile->obfd;
+ for (sect = abfd->sections;
+ sect != 0;
+ sect = sect->next)
+ {
+ p = (unsigned char *) bfd_get_section_name (abfd, sect);
+ len = strlen (p);
+ if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */
+ if (data_base == 0 ||
+ data_base > bfd_get_section_vma (abfd, sect))
+ data_base = bfd_get_section_vma (abfd, sect);
+ if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */
+ if (bss_base == 0 ||
+ bss_base > bfd_get_section_vma (abfd, sect))
+ bss_base = bfd_get_section_vma (abfd, sect);
+ }
+ *text_offs = text_addr - text_base;
+ *data_offs = data_addr - data_base;
+ *bss_offs = bss_addr - bss_base;
+ if (remote_debug)
+ {
+ char tmp[128];
+
+ sprintf (tmp, "VMA: text = 0x");
+ sprintf_vma (tmp + strlen (tmp), text_addr);
+ sprintf (tmp + strlen (tmp), " data = 0x");
+ sprintf_vma (tmp + strlen (tmp), data_addr);
+ sprintf (tmp + strlen (tmp), " bss = 0x");
+ 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);
+ }
+
+ return 0;
+}
+
+/*
+ * Function: remote_cisco_objfile_relocate
+ *
+ * Relocate the symbol file for a remote target.
+ */
+
+static void
+remote_cisco_objfile_relocate (text_off, data_off, bss_off)
+ bfd_signed_vma text_off;
+ bfd_signed_vma data_off;
+ bfd_signed_vma bss_off;
+{
+ struct section_offsets *offs;
+
+ if (text_off != 0 || data_off != 0 || bss_off != 0)
+ {
+ /* FIXME: This code assumes gdb-stabs.h is being used; it's
+ 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))));
+
+ ANOFFSET (offs, SECT_OFF_TEXT) = text_off;
+ ANOFFSET (offs, SECT_OFF_DATA) = data_off;
+ ANOFFSET (offs, SECT_OFF_BSS) = bss_off;
+
+ /* First call the standard objfile_relocate. */
+ objfile_relocate (symfile_objfile, offs);
+
+ /* Now we need to fix up the section entries already attached to
+ the exec target. These entries will control memory transfers
+ from the exec file. */
+
+ exec_set_section_offsets (text_off, data_off, bss_off);
+ }
+}
+
+/* Stub for catch_errors. */
+
+static int
+remote_start_remote_dummy (dummy)
+ char *dummy;
+{
+ start_remote (); /* Initialize gdb process mechanisms */
+ return 1;
+}
+
+static int
+remote_start_remote (dummy)
+ PTR dummy;
+{
+ immediate_quit = 1; /* Allow user to interrupt it */
+
+ /* Ack any packet which the remote side has already sent. */
+ SERIAL_WRITE (remote_desc, "+", 1);
+
+ /* Let the stub know that we want it to return the thread. */
+ set_thread (-1, 0);
+
+ inferior_pid = remote_current_thread (inferior_pid);
+
+ get_offsets (); /* Get text, data & bss offsets */
+
+ putpkt ("?"); /* initiate a query from remote machine */
+ immediate_quit = 0;
+
+ return remote_start_remote_dummy (dummy);
+}
+
+/* Open a connection to a remote debugger.
+ NAME is the filename used for communication. */
+
+static void
+remote_open (name, from_tty)
+ char *name;
+ int from_tty;
+{
+ remote_open_1 (name, from_tty, &remote_ops, 0);
+}
+
+/* Open a connection to a remote debugger using the extended
+ remote gdb protocol. NAME is the filename used for communication. */
+
+static void
+extended_remote_open (name, from_tty)
+ char *name;
+ int from_tty;
+{
+ remote_open_1 (name, from_tty, &extended_remote_ops, 1/*extended_p*/);
+}
+
+/* Generic code for opening a connection to a remote target. */
+
+static DCACHE *remote_dcache;
+
+static void
+remote_open_1 (name, from_tty, target, extended_p)
+ char *name;
+ int from_tty;
+ struct target_ops *target;
+ int extended_p;
+{
+ if (name == 0)
+ error ("To open a remote debug connection, you need to specify what\n\
+serial device is attached to the remote system (e.g. /dev/ttya).");
+
+ target_preopen (from_tty);
+
+ unpush_target (target);
+
+ remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes);
+
+ remote_desc = SERIAL_OPEN (name);
+ if (!remote_desc)
+ perror_with_name (name);
+
+ if (baud_rate != -1)
+ {
+ if (SERIAL_SETBAUDRATE (remote_desc, baud_rate))
+ {
+ SERIAL_CLOSE (remote_desc);
+ perror_with_name (name);
+ }
+ }
+
+
+ SERIAL_RAW (remote_desc);
+
+ /* If there is something sitting in the buffer we might take it as a
+ response to a command, which would be bad. */
+ SERIAL_FLUSH_INPUT (remote_desc);
+
+ if (from_tty)
+ {
+ puts_filtered ("Remote debugging using ");
+ puts_filtered (name);
+ puts_filtered ("\n");
+ }
+ push_target (target); /* Switch to using remote target now */
+
+ /* Start out by trying the 'P' request to set registers. We set
+ this each time that we open a new target so that if the user
+ switches from one stub to another, we can (if the target is
+ closed and reopened) cope. */
+ stub_supports_P = 1;
+
+ general_thread = -2;
+ continue_thread = -2;
+
+ /* Force remote_write_bytes to check whether target supports
+ binary downloading. */
+ remote_binary_checked = 0;
+
+ /* 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_pid = MAGIC_NULL_PID;
+ /* Start the remote connection; if error (0), discard this target.
+ In particular, if the user quits, be sure to discard it
+ (we'd be in an inconsistent state otherwise). */
+ if (!catch_errors (remote_start_remote, NULL,
+ "Couldn't establish connection to remote target\n",
+ RETURN_MASK_ALL))
+ {
+ pop_target ();
+ return;
+ }
+
+ if (extended_p)
+ {
+ /* tell the remote that we're using the extended protocol. */
+ char buf[PBUFSIZ];
+ putpkt ("!");
+ getpkt (buf, 0);
+ }
+}
+
+/* This takes a program previously attached to and detaches it. After
+ this is done, GDB can be used to debug some other program. We
+ better not have left any breakpoints in the target program or it'll
+ die when it hits one. */
+
+static void
+remote_detach (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ char buf[PBUFSIZ];
+
+ if (args)
+ error ("Argument given to \"detach\" when remotely debugging.");
+
+ /* Tell the remote target to detach. */
+ strcpy (buf, "D");
+ remote_send (buf);
+
+ pop_target ();
+ if (from_tty)
+ puts_filtered ("Ending remote debugging.\n");
+}
+
+/* Convert hex digit A to a number. */
+
+int
+fromhex (a)
+ int a;
+{
+ if (a >= '0' && a <= '9')
+ return a - '0';
+ else if (a >= 'a' && a <= 'f')
+ return a - 'a' + 10;
+ else if (a >= 'A' && a <= 'F')
+ return a - 'A' + 10;
+ else
+ error ("Reply contains invalid hex digit %d", a);
+}
+
+/* Convert number NIB to a hex digit. */
+
+static int
+tohex (nib)
+ int nib;
+{
+ if (nib < 10)
+ return '0'+nib;
+ else
+ return 'a'+nib-10;
+}
+\f
+/* Tell the remote machine to resume. */
+
+static enum target_signal last_sent_signal = TARGET_SIGNAL_0;
+
+static int last_sent_step;
+
+static void
+remote_resume (pid, step, siggnal)
+ int pid, step;
+ enum target_signal siggnal;
+{
+ char buf[PBUFSIZ];
+
+ if (pid == -1)
+ set_thread (0, 0); /* run any thread */
+ else
+ set_thread (pid, 0); /* run this thread */
+
+ dcache_flush (remote_dcache);
+
+ last_sent_signal = siggnal;
+ last_sent_step = step;
+
+ /* A hook for when we need to do something at the last moment before
+ resumption. */
+ if (target_resume_hook)
+ (*target_resume_hook) ();
+
+ if (siggnal != TARGET_SIGNAL_0)
+ {
+ buf[0] = step ? 'S' : 'C';
+ buf[1] = tohex (((int)siggnal >> 4) & 0xf);
+ buf[2] = tohex ((int)siggnal & 0xf);
+ buf[3] = '\0';
+ }
+ else
+ strcpy (buf, step ? "s": "c");
+
+ putpkt (buf);
+}
+\f
+/* Send ^C to target to halt it. Target will respond, and send us a
+ packet. */
+
+static void (*ofunc) PARAMS ((int));
+
+/* The command line interface's stop routine. This function is installed
+ as a signal handler for SIGINT. The first time a user requests a
+ stop, we call remote_stop to send a break or ^C. If there is no
+ response from the target (it didn't stop when the user requested it),
+ we ask the user if he'd like to detach from the target. */
+static void
+remote_interrupt (signo)
+ int signo;
+{
+ /* If this doesn't work, try more severe steps. */
+ signal (signo, remote_interrupt_twice);
+
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
+
+ target_stop ();
+}
+
+/* The user typed ^C twice. */
+
+static void
+remote_interrupt_twice (signo)
+ int signo;
+{
+ signal (signo, ofunc);
+ interrupt_query ();
+ signal (signo, remote_interrupt);
+}
+
+/* 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 ()
+{
+ /* 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);
+ else
+ SERIAL_WRITE (remote_desc, "\003", 1);
+}
+
+/* Ask the user what to do when an interrupt is received. */
+
+static void
+interrupt_query ()
+{
+ target_terminal_ours ();
+
+ if (query ("Interrupted while waiting for the program.\n\
+Give up (and stop debugging it)? "))
+ {
+ target_mourn_inferior ();
+ return_to_top_level (RETURN_QUIT);
+ }
+
+ target_terminal_inferior ();
+}
+
+/* If nonzero, ignore the next kill. */
+
+int kill_kludge;
+
+void
+remote_console_output (msg)
+ char *msg;
+{
+ char *p;
+
+ for (p = msg; *p; p +=2)
+ {
+ char tb[2];
+ char c = fromhex (p[0]) * 16 + fromhex (p[1]);
+ tb[0] = c;
+ tb[1] = 0;
+ if (target_output_hook)
+ target_output_hook (tb);
+ else
+ fputs_filtered (tb, gdb_stdout);
+ }
+}
+
+/* Wait until the remote machine stops, then return,
+ storing status in STATUS just as `wait' would.
+ Returns "pid", which in the case of a multi-threaded
+ remote OS, is the thread-id. */
+
+static int
+remote_wait (pid, status)
+ int pid;
+ struct target_waitstatus *status;
+{
+ unsigned char buf[PBUFSIZ];
+ int thread_num = -1;
+
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = 0;
+
+ while (1)
+ {
+ unsigned char *p;
+
+ ofunc = signal (SIGINT, remote_interrupt);
+ getpkt ((char *) buf, 1);
+ signal (SIGINT, ofunc);
+
+ /* This is a hook for when we need to do something (perhaps the
+ collection of trace data) every time the target stops. */
+ if (target_wait_loop_hook)
+ (*target_wait_loop_hook) ();
+
+ switch (buf[0])
+ {
+ case 'E': /* Error of some sort */
+ warning ("Remote failure reply: %s", buf);
+ continue;
+ case 'T': /* Status with PC, SP, FP, ... */
+ {
+ int i;
+ long regno;
+ char regs[MAX_REGISTER_RAW_SIZE];
+
+ /* 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)
+ {
+ unsigned char *p1;
+ char *p_temp;
+
+ /* Read the register number */
+ regno = strtol ((const char *) p, &p_temp, 16);
+ p1 = (unsigned char *)p_temp;
+
+ if (p1 == p) /* No register number present here */
+ {
+ p1 = (unsigned char *) strchr ((const char *) p, ':');
+ if (p1 == NULL)
+ warning ("Malformed packet(a) (missing colon): %s\n\
+Packet: '%s'\n",
+ p, buf);
+ if (strncmp ((const char *) p, "thread", p1 - p) == 0)
+ {
+ p_temp = unpack_varlen_hex (++p1, &thread_num);
+ record_currthread (thread_num);
+ p = (unsigned char *) p_temp;
+ }
+ }
+ else
+ {
+ p = p1;
+
+ if (*p++ != ':')
+ warning ("Malformed packet(b) (missing colon): %s\n\
+Packet: '%s'\n",
+ p, buf);
+
+ if (regno >= NUM_REGS)
+ warning ("Remote sent bad register number %ld: %s\n\
+Packet: '%s'\n",
+ regno, p, buf);
+
+ for (i = 0; i < REGISTER_RAW_SIZE (regno); i++)
+ {
+ if (p[0] == 0 || p[1] == 0)
+ warning ("Remote reply is too short: %s", buf);
+ regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
+ p += 2;
+ }
+ supply_register (regno, regs);
+ }
+
+ if (*p++ != ';')
+ {
+ warning ("Remote register badly formatted: %s", buf);
+ warning (" here: %s",p);
+ }
+ }
+ }
+ /* fall through */
+ case 'S': /* Old style status, just signal only */
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+
+ if (buf[3] == 'p')
+ {
+ /* Export Cisco kernel mode as a convenience variable
+ (so that it can be used in the GDB prompt if desired). */
+
+ if (cisco_kernel_mode == 1)
+ set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
+ value_from_string ("PDEBUG-"));
+ cisco_kernel_mode = 0;
+ thread_num = strtol ((const char *) &buf[4], NULL, 16);
+ record_currthread (thread_num);
+ }
+ else if (buf[3] == 'k')
+ {
+ /* Export Cisco kernel mode as a convenience variable
+ (so that it can be used in the GDB prompt if desired). */
+
+ if (cisco_kernel_mode == 1)
+ set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
+ value_from_string ("KDEBUG-"));
+ cisco_kernel_mode = 1;
+ }
+ goto got_status;
+ case 'N': /* Cisco special: status and offsets */
+ {
+ bfd_vma text_addr, data_addr, bss_addr;
+ bfd_signed_vma text_off, data_off, bss_off;
+ unsigned char *p1;
+
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+
+ if (symfile_objfile == NULL)
+ {
+ warning ("Relocation packet recieved with no symbol file. \
+Packet Dropped");
+ goto got_status;
+ }
+
+ /* Relocate object file. Buffer format is NAATT;DD;BB
+ * where AA is the signal number, TT is the new text
+ * address, DD * is the new data address, and BB is the
+ * new bss address. */
+
+ p = &buf[3];
+ text_addr = strtoul (p, (char **) &p1, 16);
+ if (p1 == p || *p1 != ';')
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+ p = p1 + 1;
+ data_addr = strtoul (p, (char **) &p1, 16);
+ if (p1 == p || *p1 != ';')
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+ p = p1 + 1;
+ bss_addr = strtoul (p, (char **) &p1, 16);
+ if (p1 == p)
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+
+ if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
+ &text_off, &data_off, &bss_off)
+ == 0)
+ if (text_off != 0 || data_off != 0 || bss_off != 0)
+ remote_cisco_objfile_relocate (text_off, data_off, bss_off);
+
+ goto got_status;
+ }
+ case 'W': /* Target exited */
+ {
+ /* The remote process exited. */
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
+ goto got_status;
+ }
+ case 'X':
+ status->kind = TARGET_WAITKIND_SIGNALLED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+ kill_kludge = 1;
+
+ goto got_status;
+ case 'O': /* Console output */
+ remote_console_output (buf + 1);
+ continue;
+ 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);
+ continue;
+ }
+ /* else fallthrough */
+ default:
+ warning ("Invalid remote reply: %s", buf);
+ continue;
+ }
+ }
+ got_status:
+ if (thread_num != -1)
+ {
+ return thread_num;
+ }
+ return inferior_pid;
+}
+
+/* Number of bytes of registers this stub implements. */
+
+static int register_bytes_found;
+
+/* Read the remote registers into the block REGS. */
+/* Currently we just read all the registers, so we don't use regno. */
+
+/* ARGSUSED */
+static void
+remote_fetch_registers (regno)
+ int regno;
+{
+ char buf[PBUFSIZ];
+ int i;
+ char *p;
+ char regs[REGISTER_BYTES];
+
+ set_thread (inferior_pid, 1);
+
+ sprintf (buf, "g");
+ remote_send (buf);
+
+ if (remote_register_buf_size == 0)
+ remote_register_buf_size = strlen (buf);
+
+ /* Unimplemented registers read as all bits zero. */
+ memset (regs, 0, REGISTER_BYTES);
+
+ /* We can get out of synch in various cases. If the first character
+ in the buffer is not a hex character, assume that has happened
+ and try to fetch another packet to read. */
+ while ((buf[0] < '0' || buf[0] > '9')
+ && (buf[0] < 'a' || buf[0] > 'f')
+ && buf[0] != 'x') /* New: unavailable register value */
+ {
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "Bad register packet; fetching a new packet\n");
+ getpkt (buf, 0);
+ }
+
+ /* Reply describes registers byte by byte, each byte encoded as two
+ hex characters. Suck them all up, then supply them to the
+ register cacheing/storage mechanism. */
+
+ p = buf;
+ for (i = 0; i < REGISTER_BYTES; i++)
+ {
+ if (p[0] == 0)
+ break;
+ if (p[1] == 0)
+ {
+ warning ("Remote reply is of odd length: %s", buf);
+ /* Don't change register_bytes_found in this case, and don't
+ print a second warning. */
+ goto supply_them;
+ }
+ if (p[0] == 'x' && p[1] == 'x')
+ regs[i] = 0; /* 'x' */
+ else
+ regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
+ p += 2;
+ }
+
+ if (i != register_bytes_found)
+ {
+ register_bytes_found = i;
+#ifdef REGISTER_BYTES_OK
+ if (!REGISTER_BYTES_OK (i))
+ warning ("Remote reply is too short: %s", buf);
+#endif
+ }
+
+ supply_them:
+ for (i = 0; i < NUM_REGS; i++)
+ {
+ supply_register (i, ®s[REGISTER_BYTE(i)]);
+ if (buf[REGISTER_BYTE(i) * 2] == 'x')
+ register_valid[i] = -1; /* register value not available */
+ }
+}
+
+/* Prepare to store registers. Since we may send them all (using a
+ 'G' request), we have to read out the ones we don't want to change
+ first. */
+
+static void
+remote_prepare_to_store ()
+{
+ /* Make sure the entire registers array is valid. */
+ read_register_bytes (0, (char *)NULL, REGISTER_BYTES);
+}
+
+/* Store register REGNO, or all registers if REGNO == -1, from the contents
+ of REGISTERS. FIXME: ignores errors. */
+
+static void
+remote_store_registers (regno)
+ int regno;
+{
+ char buf[PBUFSIZ];
+ int i;
+ char *p;
+
+ set_thread (inferior_pid, 1);
+
+ if (regno >= 0 && stub_supports_P)
+ {
+ /* Try storing a single register. */
+ char *regp;
+
+ sprintf (buf, "P%x=", regno);
+ p = buf + strlen (buf);
+ regp = ®isters[REGISTER_BYTE (regno)];
+ for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i)
+ {
+ *p++ = tohex ((regp[i] >> 4) & 0xf);
+ *p++ = tohex (regp[i] & 0xf);
+ }
+ *p = '\0';
+ remote_send (buf);
+ if (buf[0] != '\0')
+ {
+ /* The stub understands the 'P' request. We are done. */
+ return;
+ }
+
+ /* The stub does not support the 'P' request. Use 'G' instead,
+ and don't try using 'P' in the future (it will just waste our
+ time). */
+ stub_supports_P = 0;
+ }
+
+ buf[0] = 'G';
+
+ /* Command describes registers byte by byte,
+ each byte encoded as two hex characters. */
+
+ p = buf + 1;
+ /* remote_prepare_to_store insures that register_bytes_found gets set. */
+ for (i = 0; i < register_bytes_found; i++)
+ {
+ *p++ = tohex ((registers[i] >> 4) & 0xf);
+ *p++ = tohex (registers[i] & 0xf);
+ }
+ *p = '\0';
+
+ remote_send (buf);
+}
+
+/* Use of the data cache *used* to be disabled because it loses for looking
+ at and changing hardware I/O ports and the like. Accepting `volatile'
+ would perhaps be one way to fix it. Another idea would be to use the
+ executable file for the text segment (for all SEC_CODE sections?
+ For all SEC_READONLY sections?). This has problems if you want to
+ actually see what the memory contains (e.g. self-modifying code,
+ clobbered memory, user downloaded the wrong thing).
+
+ Because it speeds so much up, it's now enabled, if you're playing
+ with registers you turn it of (set remotecache 0). */
+
+/* Read a word from remote address ADDR and return it.
+ This goes through the data cache. */
+
+#if 0 /* unused? */
+static int
+remote_fetch_word (addr)
+ CORE_ADDR addr;
+{
+ return dcache_fetch (remote_dcache, addr);
+}
+
+/* Write a word WORD into remote address ADDR.
+ This goes through the data cache. */
+
+static void
+remote_store_word (addr, word)
+ CORE_ADDR addr;
+ int word;
+{
+ dcache_poke (remote_dcache, addr, word);
+}
+#endif /* 0 (unused?) */
+
+\f
+
+/* Return the number of hex digits in num. */
+
+static int
+hexnumlen (num)
+ ULONGEST num;
+{
+ int i;
+
+ for (i = 0; num != 0; i++)
+ num >>= 4;
+
+ return max (i, 1);
+}
+
+/* Set BUF to the hex digits representing NUM. */
+
+static int
+hexnumstr (buf, num)
+ char *buf;
+ ULONGEST num;
+{
+ int i;
+ int len = hexnumlen (num);
+
+ buf[len] = '\0';
+
+ for (i = len - 1; i >= 0; i--)
+ {
+ buf[i] = "0123456789abcdef" [(num & 0xf)];
+ num >>= 4;
+ }
+
+ return len;
+}
+
+/* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
+
+static CORE_ADDR
+remote_address_masked (addr)
+ CORE_ADDR addr;
+{
+ if (remote_address_size > 0
+ && remote_address_size < (sizeof (ULONGEST) * 8))
+ {
+ /* Only create a mask when that mask can safely be constructed
+ in a ULONGEST variable. */
+ ULONGEST mask = 1;
+ mask = (mask << remote_address_size) - 1;
+ addr &= mask;
+ }
+ return addr;
+}
+
+/* Determine whether the remote target supports binary downloading.
+ This is accomplished by sending a no-op memory write of zero length
+ to the target at the specified address. It does not suffice to send
+ 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". */
+static void
+check_binary_download (addr)
+ CORE_ADDR addr;
+{
+ if (remote_binary_download && !remote_binary_checked)
+ {
+ char buf[PBUFSIZ], *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;
+ }
+
+ 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");
+ }
+}
+
+/* Write memory data directly to the remote machine.
+ This does not inform the data cache; the data cache uses this.
+ MEMADDR is the address in the remote memory space.
+ MYADDR is the address of the buffer in our space.
+ LEN is the number of bytes.
+
+ Returns number of bytes transferred, or 0 for error. */
+
+static int
+remote_write_bytes (memaddr, myaddr, len)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+{
+ int max_buf_size; /* Max size of packet output buffer */
+ int origlen;
+
+ /* Verify that the target can support a binary download */
+ check_binary_download (memaddr);
+
+ /* Chop the transfer down if necessary */
+
+ max_buf_size = min (remote_write_size, PBUFSIZ);
+ if (remote_register_buf_size != 0)
+ max_buf_size = min (max_buf_size, remote_register_buf_size);
+
+ /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
+ max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4;
+
+ origlen = len;
+ while (len > 0)
+ {
+ unsigned char buf[PBUFSIZ];
+ unsigned char *p, *plen;
+ int todo;
+ int i;
+
+ /* construct "M"<memaddr>","<len>":" */
+ /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
+ memaddr = remote_address_masked (memaddr);
+ p = buf;
+ if (remote_binary_download)
+ {
+ *p++ = 'X';
+ todo = min (len, max_buf_size);
+ }
+ else
+ {
+ *p++ = 'M';
+ todo = min (len, max_buf_size / 2); /* num bytes that will fit */
+ }
+
+ p += hexnumstr (p, (ULONGEST) memaddr);
+ *p++ = ',';
+
+ plen = p; /* remember where len field goes */
+ p += hexnumstr (p, (ULONGEST) todo);
+ *p++ = ':';
+ *p = '\0';
+
+ /* We send target system values byte by byte, in increasing byte
+ addresses, each byte encoded as two hex characters (or one
+ binary character). */
+ if (remote_binary_download)
+ {
+ int escaped = 0;
+ for (i = 0;
+ (i < todo) && (i + escaped) < (max_buf_size - 2);
+ i++)
+ {
+ switch (myaddr[i] & 0xff)
+ {
+ case '$':
+ 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
+ {
+ for (i = 0; i < todo; i++)
+ {
+ *p++ = tohex ((myaddr[i] >> 4) & 0xf);
+ *p++ = tohex (myaddr[i] & 0xf);
+ }
+ *p = '\0';
+ }
+
+ putpkt_binary (buf, (int) (p - buf));
+ getpkt (buf, 0);
+
+ if (buf[0] == 'E')
+ {
+ /* There is no correspondance between what the remote protocol uses
+ for errors and errno codes. We would like a cleaner way of
+ representing errors (big enough to include errno codes, bfd_error
+ codes, and others). But for now just return EIO. */
+ errno = EIO;
+ return 0;
+ }
+
+ /* Increment by i, not by todo, in case escape chars
+ caused us to send fewer bytes than we'd planned. */
+ myaddr += i;
+ memaddr += i;
+ len -= i;
+ }
+ return origlen;
+}
+
+/* Read memory data directly from the remote machine.
+ This does not use the data cache; the data cache uses this.
+ MEMADDR is the address in the remote memory space.
+ MYADDR is the address of the buffer in our space.
+ LEN is the number of bytes.
+
+ Returns number of bytes transferred, or 0 for error. */
+
+static int
+remote_read_bytes (memaddr, myaddr, len)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+{
+ int max_buf_size; /* Max size of packet output buffer */
+ int origlen;
+
+ /* Chop the transfer down if necessary */
+
+ max_buf_size = min (remote_write_size, PBUFSIZ);
+ if (remote_register_buf_size != 0)
+ max_buf_size = min (max_buf_size, remote_register_buf_size);
+
+ origlen = len;
+ while (len > 0)
+ {
+ char buf[PBUFSIZ];
+ char *p;
+ int todo;
+ int i;
+
+ todo = min (len, max_buf_size / 2); /* num bytes that will fit */
+
+ /* construct "m"<memaddr>","<len>" */
+ /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
+ memaddr = remote_address_masked (memaddr);
+ p = buf;
+ *p++ = 'm';
+ p += hexnumstr (p, (ULONGEST) memaddr);
+ *p++ = ',';
+ p += hexnumstr (p, (ULONGEST) todo);
+ *p = '\0';
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == 'E')
+ {
+ /* There is no correspondance between what the remote protocol uses
+ for errors and errno codes. We would like a cleaner way of
+ representing errors (big enough to include errno codes, bfd_error
+ codes, and others). But for now just return EIO. */
+ errno = EIO;
+ return 0;
+ }
+
+ /* Reply describes memory byte by byte,
+ each byte encoded as two hex characters. */
+
+ p = buf;
+ for (i = 0; i < todo; i++)
+ {
+ if (p[0] == 0 || p[1] == 0)
+ /* Reply is short. This means that we were able to read
+ only part of what we wanted to. */
+ return i + (origlen - len);
+ myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
+ p += 2;
+ }
+ myaddr += todo;
+ memaddr += todo;
+ len -= todo;
+ }
+ return origlen;
+}
+\f
+/* Read or write LEN bytes from inferior memory at MEMADDR,
+ transferring to or from debugger address BUFFER. Write to inferior if
+ SHOULD_WRITE is nonzero. Returns length of data written or read; 0
+ for error. */
+
+#ifndef REMOTE_TRANSLATE_XFER_ADDRESS
+#define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \
+ (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN))
+#endif
+
+/* ARGSUSED */
+static int
+remote_xfer_memory (mem_addr, buffer, mem_len, should_write, target)
+ CORE_ADDR mem_addr;
+ char *buffer;
+ int mem_len;
+ int should_write;
+ struct target_ops *target; /* ignored */
+{
+ CORE_ADDR targ_addr;
+ int targ_len;
+ REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len);
+ if (targ_len <= 0)
+ return 0;
+
+ return dcache_xfer_memory (remote_dcache, targ_addr, buffer,
+ targ_len, should_write);
+}
+
+
+#if 0
+/* Enable after 4.12. */
+
+void
+remote_search (len, data, mask, startaddr, increment, lorange, hirange
+ addr_found, data_found)
+ int len;
+ char *data;
+ char *mask;
+ CORE_ADDR startaddr;
+ int increment;
+ CORE_ADDR lorange;
+ CORE_ADDR hirange;
+ CORE_ADDR *addr_found;
+ char *data_found;
+{
+ if (increment == -4 && len == 4)
+ {
+ long mask_long, data_long;
+ long data_found_long;
+ CORE_ADDR addr_we_found;
+ char buf[PBUFSIZ];
+ long returned_long[2];
+ char *p;
+
+ mask_long = extract_unsigned_integer (mask, len);
+ data_long = extract_unsigned_integer (data, len);
+ sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long);
+ putpkt (buf);
+ getpkt (buf, 0);
+ if (buf[0] == '\0')
+ {
+ /* The stub doesn't support the 't' request. We might want to
+ remember this fact, but on the other hand the stub could be
+ switched on us. Maybe we should remember it only until
+ the next "target remote". */
+ generic_search (len, data, mask, startaddr, increment, lorange,
+ hirange, addr_found, data_found);
+ return;
+ }
+
+ if (buf[0] == 'E')
+ /* There is no correspondance between what the remote protocol uses
+ for errors and errno codes. We would like a cleaner way of
+ representing errors (big enough to include errno codes, bfd_error
+ codes, and others). But for now just use EIO. */
+ memory_error (EIO, startaddr);
+ p = buf;
+ addr_we_found = 0;
+ while (*p != '\0' && *p != ',')
+ addr_we_found = (addr_we_found << 4) + fromhex (*p++);
+ if (*p == '\0')
+ error ("Protocol error: short return for search");
+
+ data_found_long = 0;
+ while (*p != '\0' && *p != ',')
+ data_found_long = (data_found_long << 4) + fromhex (*p++);
+ /* Ignore anything after this comma, for future extensions. */
+
+ if (addr_we_found < lorange || addr_we_found >= hirange)
+ {
+ *addr_found = 0;
+ return;
+ }
+
+ *addr_found = addr_we_found;
+ *data_found = store_unsigned_integer (data_we_found, len);
+ return;
+ }
+ generic_search (len, data, mask, startaddr, increment, lorange,
+ hirange, addr_found, data_found);
+}
+#endif /* 0 */
+\f
+static void
+remote_files_info (ignore)
+ struct target_ops *ignore;
+{
+ puts_filtered ("Debugging a target over a serial line.\n");
+}
+\f
+/* Stuff for dealing with the packets which are part of this protocol.
+ See comment at top of file for details. */
+
+/* Read a single character from the remote end, masking it down to 7 bits. */
+
+static int
+readchar (timeout)
+ int timeout;
+{
+ int ch;
+
+ ch = SERIAL_READCHAR (remote_desc, timeout);
+
+ switch (ch)
+ {
+ case SERIAL_EOF:
+ error ("Remote connection closed");
+ case SERIAL_ERROR:
+ perror_with_name ("Remote communication error");
+ case SERIAL_TIMEOUT:
+ return ch;
+ default:
+ return ch & 0x7f;
+ }
+}
+
+/* Send the command in BUF to the remote machine, and read the reply
+ into BUF. Report an error if we get an error reply. */
+
+static void
+remote_send (buf)
+ char *buf;
+{
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == 'E')
+ error ("Remote failure reply: %s", buf);
+}
+
+/* Display a null-terminated packet on stdout, for debugging, using C
+ string notation. */
+
+static void
+print_packet (buf)
+ char *buf;
+{
+ puts_filtered ("\"");
+ while (*buf)
+ gdb_printchar (*buf++, gdb_stdout, '"');
+ puts_filtered ("\"");
+}
+
+int
+putpkt (buf)
+ char *buf;
+{
+ return putpkt_binary (buf, strlen (buf));
+}
+
+/* Send a packet to the remote machine, with error checking. The data
+ of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5
+ to account for the $, # and checksum, and for a possible /0 if we are
+ debugging (remote_debug) and want to print the sent packet as a string */
+
+static int
+putpkt_binary (buf, cnt)
+ char *buf;
+ int cnt;
+{
+ int i;
+ unsigned char csum = 0;
+ char buf2[PBUFSIZ];
+ int ch;
+ int tcount = 0;
+ char *p;
+
+ /* Copy the packet into buffer BUF2, encapsulating it
+ and giving it a checksum. */
+
+ if (cnt > (int) sizeof (buf2) - 5) /* Prosanity check */
+ abort ();
+
+ p = buf2;
+ *p++ = '$';
+
+ for (i = 0; i < cnt; i++)
+ {
+ csum += buf[i];
+ *p++ = buf[i];
+ }
+ *p++ = '#';
+ *p++ = tohex ((csum >> 4) & 0xf);
+ *p++ = tohex (csum & 0xf);
+
+ /* Send it over and over until we get a positive ack. */
+
+ while (1)
+ {
+ int started_error_output = 0;
+
+ if (remote_debug)
+ {
+ *p = '\0';
+ fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", buf2);
+ gdb_flush (gdb_stdlog);
+ }
+ if (SERIAL_WRITE (remote_desc, buf2, p - buf2))
+ perror_with_name ("putpkt: write failed");
+
+ /* read until either a timeout occurs (-2) or '+' is read */
+ while (1)
+ {
+ ch = readchar (remote_timeout);
+
+ if (remote_debug)
+ {
+ switch (ch)
+ {
+ case '+':
+ case SERIAL_TIMEOUT:
+ case '$':
+ if (started_error_output)
+ {
+ putchar_unfiltered ('\n');
+ started_error_output = 0;
+ }
+ }
+ }
+
+ switch (ch)
+ {
+ case '+':
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "Ack\n");
+ return 1;
+ case SERIAL_TIMEOUT:
+ tcount ++;
+ if (tcount > 3)
+ return 0;
+ break; /* Retransmit buffer */
+ case '$':
+ {
+ char junkbuf[PBUFSIZ];
+
+ /* It's probably an old response, and we're out of sync.
+ Just gobble up the packet and ignore it. */
+ getpkt (junkbuf, 0);
+ continue; /* Now, go look for + */
+ }
+ default:
+ if (remote_debug)
+ {
+ if (!started_error_output)
+ {
+ started_error_output = 1;
+ fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
+ }
+ fputc_unfiltered (ch & 0177, gdb_stdlog);
+ }
+ continue;
+ }
+ break; /* Here to retransmit */
+ }
+
+#if 0
+ /* This is wrong. If doing a long backtrace, the user should be
+ able to get out next time we call QUIT, without anything as
+ violent as interrupt_query. If we want to provide a way out of
+ here without getting to the next QUIT, it should be based on
+ hitting ^C twice as in remote_wait. */
+ if (quit_flag)
+ {
+ quit_flag = 0;
+ interrupt_query ();
+ }
+#endif
+ }
+}
+
+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. */
+
+static int
+read_frame (buf)
+ char *buf;
+{
+ unsigned char csum;
+ char *bp;
+ int c;
+
+ csum = 0;
+ bp = buf;
+
+ while (1)
+ {
+ c = readchar (remote_timeout);
+
+ switch (c)
+ {
+ case SERIAL_TIMEOUT:
+ if (remote_debug)
+ fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog);
+ return 0;
+ case '$':
+ if (remote_debug)
+ fputs_filtered ("Saw new packet start in middle of old one\n",
+ gdb_stdlog);
+ return 0; /* Start a new packet, count retries */
+ case '#':
+ {
+ unsigned char pktcsum;
+
+ *bp = '\000';
+
+ pktcsum = fromhex (readchar (remote_timeout)) << 4;
+ pktcsum |= fromhex (readchar (remote_timeout));
+
+ if (csum == pktcsum)
+ {
+ if (remote_cisco_mode) /* variant run-length-encoding */
+ {
+ char tmp_buf[PBUFSIZ];
+
+ remote_cisco_expand (buf, tmp_buf);
+ strcpy (buf, tmp_buf);
+ }
+ return 1;
+ }
+
+ if (remote_debug)
+ {
+ fprintf_filtered (gdb_stdlog,
+ "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
+ pktcsum, csum);
+ fputs_filtered (buf, gdb_stdlog);
+ fputs_filtered ("\n", gdb_stdlog);
+ }
+ 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 */
+
+ if (c > 0 && c < 255 && bp + c - 1 < buf + PBUFSIZ - 1)
+ {
+ memset (bp, *(bp - 1), c);
+ bp += c;
+ continue;
+ }
+
+ *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 */
+ default:
+ if (bp < buf + PBUFSIZ - 1)
+ {
+ *bp++ = c;
+ csum += c;
+ continue;
+ }
+
+ *bp = '\0';
+ puts_filtered ("Remote packet too long: ");
+ puts_filtered (buf);
+ puts_filtered ("\n");
+
+ return 0;
+ }
+ }
+}
+
+/* Read a packet from the remote machine, with error checking, and
+ store it in BUF. BUF is expected to be of size PBUFSIZ. If
+ FOREVER, wait forever rather than timing out; this is used while
+ the target is executing user code. */
+
+void
+getpkt (buf, forever)
+ char *buf;
+ int forever;
+{
+ int c;
+ int tries;
+ int timeout;
+ int val;
+
+ strcpy (buf,"timeout");
+
+ if (forever)
+ {
+ timeout = watchdog > 0 ? watchdog : -1;
+ }
+
+ else
+ timeout = remote_timeout;
+
+#define MAX_TRIES 3
+
+ for (tries = 1; tries <= MAX_TRIES; tries++)
+ {
+ /* 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
+ {
+ c = readchar (timeout);
+
+ if (c == SERIAL_TIMEOUT)
+ {
+ if (forever) /* Watchdog went off. Kill the target. */
+ {
+ target_mourn_inferior ();
+ error ("Watchdog has expired. Target detached.\n");
+ }
+ if (remote_debug)
+ fputs_filtered ("Timed out.\n", gdb_stdlog);
+ goto retry;
+ }
+ }
+ while (c != '$');
+
+ /* We've found the start of a packet, now collect the data. */
+
+ val = read_frame (buf);
+
+ if (val == 1)
+ {
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", buf);
+ SERIAL_WRITE (remote_desc, "+", 1);
+ return;
+ }
+
+ /* Try the whole thing again. */
+ retry:
+ SERIAL_WRITE (remote_desc, "-", 1);
+ }
+
+ /* We have tried hard enough, and just can't receive the packet. Give up. */
+
+ printf_unfiltered ("Ignoring packet error, continuing...\n");
+ SERIAL_WRITE (remote_desc, "+", 1);
+}
+\f
+static void
+remote_kill ()
+{
+ /* For some mysterious reason, wait_for_inferior calls kill instead of
+ mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
+ if (kill_kludge)
+ {
+ kill_kludge = 0;
+ target_mourn_inferior ();
+ return;
+ }
+
+ /* 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);
+
+ /* 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. */
+ target_mourn_inferior ();
+}
+
+static void
+remote_mourn ()
+{
+ remote_mourn_1 (&remote_ops);
+}
+
+static void
+extended_remote_mourn ()
+{
+ /* We do _not_ want to mourn the target like this; this will
+ remove the extended remote target from the target stack,
+ and the next time the user says "run" it'll fail.
+
+ FIXME: What is the right thing to do here? */
+#if 0
+ remote_mourn_1 (&extended_remote_ops);
+#endif
+}
+
+/* Worker function for remote_mourn. */
+static void
+remote_mourn_1 (target)
+ struct target_ops *target;
+{
+ unpush_target (target);
+ generic_mourn_inferior ();
+}
+
+/* In the extended protocol we want to be able to do things like
+ "run" and have them basically work as expected. So we need
+ a special create_inferior function.
+
+ FIXME: One day add support for changing the exec file
+ we're debugging, arguments and an environment. */
+
+static void
+extended_remote_create_inferior (exec_file, args, env)
+ char *exec_file;
+ char *args;
+ char **env;
+{
+ /* Rip out the breakpoints; we'll reinsert them after restarting
+ the remote server. */
+ remove_breakpoints ();
+
+ /* Now restart the remote server. */
+ extended_remote_restart ();
+
+ /* Now put the breakpoints back in. This way we're safe if the
+ restart function works via a unix fork on the remote side. */
+ insert_breakpoints ();
+
+ /* Clean up from the last time we were running. */
+ clear_proceed_status ();
+
+ /* Let the remote process run. */
+ proceed (-1, TARGET_SIGNAL_0, 0);
+}
+
+\f
+/* On some machines, e.g. 68k, we may use a different breakpoint instruction
+ than other targets; in those use REMOTE_BREAKPOINT instead of just
+ BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
+ and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
+ the standard routines that are in mem-break.c. */
+
+/* FIXME, these ought to be done in a more dynamic fashion. For instance,
+ the choice of breakpoint instruction affects target program design and
+ vice versa, and by making it user-tweakable, the special code here
+ goes away and we need fewer special GDB configurations. */
+
+#if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
+#define REMOTE_BREAKPOINT
+#endif
+
+#ifdef REMOTE_BREAKPOINT
+
+/* If the target isn't bi-endian, just pretend it is. */
+#if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
+#define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
+#define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
+#endif
+
+static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT;
+static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT;
+
+#endif /* REMOTE_BREAKPOINT */
+
+/* Insert a breakpoint on targets that don't have any better breakpoint
+ support. We read the contents of the target location and stash it,
+ then overwrite it with a breakpoint instruction. ADDR is the target
+ location in the target machine. CONTENTS_CACHE is a pointer to
+ memory allocated for saving the target contents. It is guaranteed
+ by the caller to be long enough to save sizeof BREAKPOINT bytes (this
+ is accomplished via BREAKPOINT_MAX). */
+
+static int
+remote_insert_breakpoint (addr, contents_cache)
+ CORE_ADDR addr;
+ char *contents_cache;
+{
+#ifdef REMOTE_BREAKPOINT
+ int val;
+
+ val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
+
+ if (val == 0)
+ {
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ val = target_write_memory (addr, (char *) big_break_insn,
+ sizeof big_break_insn);
+ else
+ val = target_write_memory (addr, (char *) little_break_insn,
+ sizeof little_break_insn);
+ }
+
+ return val;
+#else
+ return memory_insert_breakpoint (addr, contents_cache);
+#endif /* REMOTE_BREAKPOINT */
+}
+
+static int
+remote_remove_breakpoint (addr, contents_cache)
+ CORE_ADDR addr;
+ char *contents_cache;
+{
+#ifdef REMOTE_BREAKPOINT
+ return target_write_memory (addr, contents_cache, sizeof big_break_insn);
+#else
+ return memory_remove_breakpoint (addr, contents_cache);
+#endif /* REMOTE_BREAKPOINT */
+}
+
+/* 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 (name, from_tty)
+ char *name;
+ int from_tty;
+{
+ printf_filtered ("Switching to remote protocol\n");
+ remote_open (name, from_tty);
+}
+
+/* Other targets want to use the entire remote serial module but with
+ certain remote_ops overridden. */
+
+void
+open_remote_target (name, from_tty, target, extended_p)
+ char *name;
+ int from_tty;
+ struct target_ops *target;
+ int extended_p;
+{
+ printf_filtered ("Selecting the %sremote protocol\n",
+ (extended_p ? "extended-" : ""));
+ remote_open_1 (name, from_tty, target, extended_p);
+}
+
+/* Table used by the crc32 function to calcuate the checksum. */
+
+static unsigned long crc32_table[256] = {0, 0};
+
+static unsigned long
+crc32 (buf, len, crc)
+ unsigned char *buf;
+ int len;
+ unsigned int crc;
+{
+ if (! crc32_table[1])
+ {
+ /* Initialize the CRC table and the decoding table. */
+ int i, j;
+ unsigned int c;
+
+ for (i = 0; i < 256; i++)
+ {
+ for (c = i << 24, j = 8; j > 0; --j)
+ c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
+ crc32_table[i] = c;
+ }
+ }
+
+ while (len--)
+ {
+ crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255];
+ buf++;
+ }
+ return 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. */
+
+static void
+compare_sections_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ asection *s;
+ unsigned long host_crc, target_crc;
+ extern bfd *exec_bfd;
+ struct cleanup *old_chain;
+ char *tmp, *sectdata, *sectname, buf[PBUFSIZ];
+ bfd_size_type size;
+ bfd_vma lma;
+ int matched = 0;
+ int mismatched = 0;
+
+ 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)
+ {
+ if (!(s->flags & SEC_LOAD))
+ continue; /* skip non-loadable section */
+
+ size = bfd_get_section_size_before_reloc (s);
+ if (size == 0)
+ continue; /* skip zero-length section */
+
+ sectname = (char *) bfd_get_section_name (exec_bfd, s);
+ if (args && strcmp (args, sectname) != 0)
+ continue; /* not the section selected by user */
+
+ matched = 1; /* do this section */
+ lma = s->lma;
+ /* FIXME: assumes lma can fit into long */
+ sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size);
+ putpkt (buf);
+
+ /* be clever; compute the host_crc before waiting for target reply */
+ sectdata = xmalloc (size);
+ old_chain = make_cleanup (free, sectdata);
+ bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
+ host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff);
+
+ getpkt (buf, 0);
+ if (buf[0] == 'E')
+ error ("target memory fault, section %s, range 0x%08x -- 0x%08x",
+ sectname, lma, lma + size);
+ if (buf[0] != 'C')
+ error ("remote target does not support this operation");
+
+ 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);
+ if (host_crc == target_crc)
+ printf_filtered ("matched.\n");
+ else
+ {
+ printf_filtered ("MIS-MATCHED!\n");
+ mismatched++;
+ }
+
+ do_cleanups (old_chain);
+ }
+ if (mismatched > 0)
+ warning ("One or more sections of the remote executable does not match\n\
+the loaded file\n");
+ if (args && !matched)
+ printf_filtered ("No loaded section named '%s'.\n", args);
+}
+
+static int
+remote_query (query_type, buf, outbuf, bufsiz)
+ int query_type;
+ char *buf;
+ char *outbuf;
+ int *bufsiz;
+{
+ int i;
+ char buf2[PBUFSIZ];
+ char *p2 = &buf2[0];
+ char *p = buf;
+
+ if (! bufsiz)
+ error ("null pointer to remote bufer size specified");
+
+ /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let
+ the caller know and return what the minimum size is */
+ /* Note: a zero bufsiz can be used to query the minimum buffer size */
+ if ( *bufsiz < PBUFSIZ )
+ {
+ *bufsiz = PBUFSIZ;
+ return -1;
+ }
+
+ /* except for querying the minimum buffer size, target must be open */
+ if (! remote_desc)
+ error ("remote query is only available after target open");
+
+ /* we only take uppercase letters as query types, at least for now */
+ if ( (query_type < 'A') || (query_type > 'Z') )
+ error ("invalid remote query type");
+
+ if (! buf)
+ error ("null remote query specified");
+
+ if (! outbuf)
+ error ("remote query requires a buffer to receive data");
+
+ outbuf[0] = '\0';
+
+ *p2++ = 'q';
+ *p2++ = query_type;
+
+ /* we used one buffer char for the remote protocol q command and another
+ for the query type. As the remote protocol encapsulation uses 4 chars
+ plus one extra in case we are debugging (remote_debug),
+ we have PBUFZIZ - 7 left to pack the query string */
+ i = 0;
+ while ( buf[i] && (i < (PBUFSIZ - 8)) )
+ {
+ /* bad caller may have sent forbidden characters */
+ if ( (!isprint(buf[i])) || (buf[i] == '$') || (buf[i] == '#') )
+ error ("illegal characters in query string");
+
+ *p2++ = buf[i];
+ i++;
+ }
+ *p2 = buf[i];
+
+ if ( buf[i] )
+ error ("query larger than available buffer");
+
+ i = putpkt (buf2);
+ if ( i < 0 ) return i;
+
+ getpkt (outbuf, 0);
+
+ return 0;
+}
+
+static void
+packet_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ char buf[PBUFSIZ];
+
+ if (! remote_desc)
+ error ("command can only be used with remote target");
+
+ if (! args)
+ error ("remote-packet command requires packet text as argument");
+
+ puts_filtered ("sending: ");
+ print_packet (args);
+ puts_filtered ("\n");
+ putpkt (args);
+
+ getpkt (buf, 0);
+ puts_filtered ("received: ");
+ print_packet (buf);
+ puts_filtered ("\n");
+}
+
+#if 0
+/* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
+
+static void display_thread_info PARAMS ((struct gdb_ext_thread_info *info));
+
+static void threadset_test_cmd PARAMS ((char *cmd, int tty));
+
+static void threadalive_test PARAMS ((char *cmd, int tty));
+
+static void threadlist_test_cmd PARAMS ((char *cmd, int tty));
+
+int get_and_display_threadinfo PARAMS ((threadref *ref));
+
+static void threadinfo_test_cmd PARAMS ((char *cmd, int tty));
+
+static int thread_display_step PARAMS ((threadref *ref, void *context));
+
+static void threadlist_update_test_cmd PARAMS ((char *cmd, int tty));
+
+static void init_remote_threadtests PARAMS ((void));
+
+#define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
+
+static void
+threadset_test_cmd (cmd, tty)
+ char *cmd;
+ int tty;
+{
+ int sample_thread = SAMPLE_THREAD;
+
+ printf_filtered ("Remote threadset test\n");
+ set_thread (sample_thread, 1);
+}
+
+
+static void
+threadalive_test (cmd, tty)
+ char *cmd;
+ int tty;
+{
+ int sample_thread = SAMPLE_THREAD;
+
+ if (remote_thread_alive (sample_thread))
+ printf_filtered ("PASS: Thread alive test\n");
+ else
+ printf_filtered ("FAIL: Thread alive test\n");
+}
+
+void output_threadid PARAMS ((char *title, threadref * ref));
+
+void
+output_threadid (title, ref)
+ char *title;
+ threadref *ref;
+{
+ char hexid[20];
+
+ pack_threadid (&hexid[0], ref); /* Convert threead id into hex */
+ hexid[16] = 0;
+ printf_filtered ("%s %s\n", title, (&hexid[0]));
+}
+
+static void
+threadlist_test_cmd (cmd, tty)
+ char *cmd;
+ int tty;
+{
+ int startflag = 1;
+ threadref nextthread;
+ int done, result_count;
+ threadref threadlist[3];
+
+ printf_filtered ("Remote Threadlist test\n");
+ if (!remote_get_threadlist (startflag, &nextthread, 3, &done,
+ &result_count, &threadlist[0]))
+ printf_filtered ("FAIL: threadlist test\n");
+ else
+ {
+ threadref *scan = threadlist;
+ threadref *limit = scan + result_count;
+
+ while (scan < limit)
+ output_threadid (" thread ", scan++);
+ }
+}
+
+void
+display_thread_info (info)
+ struct gdb_ext_thread_info *info;
+{
+ output_threadid ("Threadid: ", &info->threadid);
+ printf_filtered ("Name: %s\n ", info->shortname);
+ printf_filtered ("State: %s\n", info->display);
+ printf_filtered ("other: %s\n\n", info->more_display);
+}
+
+int
+get_and_display_threadinfo (ref)
+ threadref *ref;
+{
+ int result;
+ int set;
+ struct gdb_ext_thread_info threadinfo;
+
+ set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
+ | TAG_MOREDISPLAY | TAG_DISPLAY;
+ if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo)))
+ display_thread_info (&threadinfo);
+ return result;
+}
- if (should_write)
- bytes_xferred = remote_write_bytes (memaddr, myaddr, xfersize);
- else
- bytes_xferred = remote_read_bytes (memaddr, myaddr, xfersize);
+static void
+threadinfo_test_cmd (cmd, tty)
+ char *cmd;
+ int tty;
+{
+ int athread = SAMPLE_THREAD;
+ threadref thread;
+ int set;
+
+ int_to_threadref (&thread, athread);
+ printf_filtered ("Remote Threadinfo test\n");
+ if (!get_and_display_threadinfo (&thread))
+ printf_filtered ("FAIL cannot get thread info\n");
+}
- /* If we get an error, we are done xferring. */
- if (bytes_xferred == 0)
- break;
+static int
+thread_display_step (ref, context)
+ threadref *ref;
+ void *context;
+{
+ /* output_threadid(" threadstep ",ref); *//* simple test */
+ return get_and_display_threadinfo (ref);
+}
- memaddr += bytes_xferred;
- myaddr += bytes_xferred;
- len -= bytes_xferred;
- total_xferred += bytes_xferred;
- }
- return total_xferred;
+static void
+threadlist_update_test_cmd (cmd, tty)
+ char *cmd;
+ int tty;
+{
+ printf_filtered ("Remote Threadlist update test\n");
+ remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS);
}
static void
-remote_files_info (ignore)
- struct target_ops *ignore;
+init_remote_threadtests (void)
{
- puts_filtered ("Debugging a target over a serial line.\n");
+ add_com ("tlist", class_obscure, threadlist_test_cmd,
+ "Fetch and print the remote list of thread identifiers, one pkt only");
+ add_com ("tinfo", class_obscure, threadinfo_test_cmd,
+ "Fetch and display info about one thread");
+ add_com ("tset", class_obscure, threadset_test_cmd,
+ "Test setting to a different thread");
+ add_com ("tupd", class_obscure, threadlist_update_test_cmd,
+ "Iterate through updating all remote thread info");
+ add_com ("talive", class_obscure, threadalive_test,
+ " Remote thread alive test ");
}
-\f
-/* Stuff for dealing with the packets which are part of this protocol.
- See comment at top of file for details. */
-/* Read a single character from the remote end, masking it down to 7 bits. */
+#endif /* 0 */
-static int
-readchar ()
+static void
+init_remote_ops ()
{
- int ch;
-
- ch = SERIAL_READCHAR (remote_desc, timeout);
+ 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 (e.g. /dev/ttya).";
+ remote_ops.to_open = remote_open;
+ remote_ops.to_close = remote_close;
+ remote_ops.to_detach = remote_detach;
+ remote_ops.to_resume = remote_resume;
+ remote_ops.to_wait = remote_wait;
+ remote_ops.to_fetch_registers = remote_fetch_registers;
+ remote_ops.to_store_registers = remote_store_registers;
+ remote_ops.to_prepare_to_store = remote_prepare_to_store;
+ remote_ops.to_xfer_memory = remote_xfer_memory;
+ remote_ops.to_files_info = remote_files_info;
+ remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
+ remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
+ remote_ops.to_kill = remote_kill;
+ remote_ops.to_load = generic_load;
+ remote_ops.to_mourn_inferior = remote_mourn;
+ remote_ops.to_thread_alive = remote_thread_alive;
+ remote_ops.to_find_new_threads = remote_threads_info;
+ remote_ops.to_stop = remote_stop;
+ remote_ops.to_query = remote_query;
+ 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_thread_control = tc_schedlock; /* can lock scheduler */
+ remote_ops.to_magic = OPS_MAGIC;
+}
- if (ch < 0)
- return ch;
+/* Set up the extended remote vector by making a copy of the standard
+ remote vector and adding to it. */
- return ch & 0x7f;
+static void
+init_extended_remote_ops ()
+{
+ extended_remote_ops = remote_ops;
+
+ extended_remote_ops.to_shortname = "extended-remote";
+ extended_remote_ops.to_longname =
+ "Extended remote serial target in gdb-specific protocol";
+ extended_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 (e.g. /dev/ttya).",
+ extended_remote_ops.to_open = extended_remote_open;
+ extended_remote_ops.to_create_inferior = extended_remote_create_inferior;
+ extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
}
-/* Send the command in BUF to the remote machine,
- and read the reply into BUF.
- Report an error if we get an error reply. */
+/*
+ * Command: info remote-process
+ *
+ * This implements Cisco's version of the "info proc" command.
+ *
+ * This query allows the target stub to return an arbitrary string
+ * (or strings) giving arbitrary information about the target process.
+ * This is optional; the target stub isn't required to implement it.
+ *
+ * Syntax: qfProcessInfo request first string
+ * qsProcessInfo request subsequent string
+ * reply: 'O'<hex-encoded-string>
+ * 'l' last reply (empty)
+ */
static void
-remote_send (buf)
- char *buf;
+remote_info_process (args, from_tty)
+ char *args;
+ int from_tty;
{
+ char buf[PBUFSIZ];
- putpkt (buf);
+ if (remote_desc == 0)
+ error ("Command can only be used when connected to the remote target.");
+
+ putpkt ("qfProcessInfo");
getpkt (buf, 0);
+ if (buf[0] == 0)
+ return; /* Silently: target does not support this feature. */
if (buf[0] == 'E')
- error ("Remote failure reply: %s", buf);
+ error ("info proc: target error.");
+
+ while (buf[0] == 'O') /* Capitol-O packet */
+ {
+ remote_console_output (&buf[1]);
+ putpkt ("qsProcessInfo");
+ getpkt (buf, 0);
+ }
}
-/* Send a packet to the remote machine, with error checking.
- The data of the packet is in BUF. */
+/*
+ * Target Cisco
+ */
static void
-putpkt (buf)
- char *buf;
+remote_cisco_open (name, from_tty)
+ char *name;
+ int from_tty;
{
- int i;
- unsigned char csum = 0;
- char buf2[PBUFSIZ];
- int cnt = strlen (buf);
- int ch;
- char *p;
+ if (name == 0)
+ error (
+"To open a remote debug connection, you need to specify what \n\
+device is attached to the remote system (e.g. host:port).");
- /* Copy the packet into buffer BUF2, encapsulating it
- and giving it a checksum. */
+ target_preopen (from_tty);
- if (cnt > sizeof(buf2) - 5) /* Prosanity check */
- abort();
+ unpush_target (&remote_cisco_ops);
- p = buf2;
- *p++ = '$';
+ remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes);
- for (i = 0; i < cnt; i++)
+ remote_desc = SERIAL_OPEN (name);
+ if (!remote_desc)
+ perror_with_name (name);
+
+ /*
+ * If a baud rate was specified on the gdb command line it will
+ * be greater than the initial value of -1. If it is, use it otherwise
+ * default to 9600
+ */
+
+ baud_rate = (baud_rate > 0) ? baud_rate : 9600;
+ if (SERIAL_SETBAUDRATE (remote_desc, baud_rate))
{
- csum += buf[i];
- *p++ = buf[i];
+ SERIAL_CLOSE (remote_desc);
+ perror_with_name (name);
}
- *p++ = '#';
- *p++ = tohex ((csum >> 4) & 0xf);
- *p++ = tohex (csum & 0xf);
- /* Send it over and over until we get a positive ack. */
+ SERIAL_RAW (remote_desc);
- while (1)
+ /* If there is something sitting in the buffer we might take it as a
+ response to a command, which would be bad. */
+ SERIAL_FLUSH_INPUT (remote_desc);
+
+ if (from_tty)
{
- if (remote_debug)
- {
- *p = '\0';
- printf_unfiltered ("Sending packet: %s...", buf2); gdb_flush(gdb_stdout);
- }
- if (SERIAL_WRITE (remote_desc, buf2, p - buf2))
- perror_with_name ("putpkt: write failed");
+ puts_filtered ("Remote debugging using ");
+ puts_filtered (name);
+ puts_filtered ("\n");
+ }
- /* read until either a timeout occurs (-2) or '+' is read */
- while (1)
- {
- ch = readchar ();
+ remote_cisco_mode = 1;
- switch (ch)
- {
- case '+':
- if (remote_debug)
- printf_unfiltered("Ack\n");
- return;
- case SERIAL_TIMEOUT:
- break; /* Retransmit buffer */
- case SERIAL_ERROR:
- perror_with_name ("putpkt: couldn't read ACK");
- case SERIAL_EOF:
- error ("putpkt: EOF while trying to read ACK");
- default:
- if (remote_debug)
- printf_unfiltered ("%02X %c ", ch&0xFF, ch);
- continue;
- }
- break; /* Here to retransmit */
- }
+ push_target (&remote_cisco_ops); /* Switch to using cisco target now */
- if (quit_flag)
- {
- quit_flag = 0;
- interrupt_query ();
- }
+ /* Start out by trying the 'P' request to set registers. We set this each
+ time that we open a new target so that if the user switches from one
+ stub to another, we can (if the target is closed and reopened) cope. */
+ stub_supports_P = 1;
+
+ general_thread = -2;
+ continue_thread = -2;
+
+ /* Force remote_write_bytes to check whether target supports
+ binary downloading. */
+ remote_binary_checked = 0;
+
+ /* 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_pid = MAGIC_NULL_PID;
+
+ /* Start the remote connection; if error (0), discard this target. */
+
+ if (!catch_errors (remote_start_remote_dummy, (char *) 0,
+ "Couldn't establish connection to remote target\n",
+ RETURN_MASK_ALL))
+ {
+ pop_target ();
+ return;
}
}
-/* Read a packet from the remote machine, with error checking,
- and store it in BUF. BUF is expected to be of size PBUFSIZ.
- If FOREVER, wait forever rather than timing out; this is used
- while the target is executing user code. */
-
static void
-getpkt (buf, forever)
- char *buf;
- int forever;
+remote_cisco_close (quitting)
+ int quitting;
{
- char *bp;
- unsigned char csum;
- int c = 0;
- unsigned char c1, c2;
- int retries = 0;
-#define MAX_RETRIES 10
+ remote_cisco_mode = 0;
+ remote_close (quitting);
+}
- while (1)
- {
- if (quit_flag)
- {
- quit_flag = 0;
- interrupt_query ();
- }
+static void
+remote_cisco_mourn PARAMS ((void))
+{
+ remote_mourn_1 (&remote_cisco_ops);
+}
- /* 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. */
+enum {
+ READ_MORE,
+ FATAL_ERROR,
+ ENTER_DEBUG,
+ DISCONNECT_TELNET
+} minitelnet_return;
- c = readchar();
- if (c > 0 && c != '$')
- continue;
+/* shared between readsocket() and readtty() */
+static char *tty_input;
- if (c == SERIAL_TIMEOUT)
- {
- if (forever)
- continue;
- if (++retries >= MAX_RETRIES)
- if (remote_debug) puts_filtered ("Timed out.\n");
- goto out;
- }
+static int escape_count;
+static int echo_check;
+extern int quit_flag;
- if (c == SERIAL_EOF)
- error ("Remote connection closed");
- if (c == SERIAL_ERROR)
- perror_with_name ("Remote communication error");
+static int
+readsocket ()
+{
+ int data;
- /* Force csum to be zero here because of possible error retry. */
- csum = 0;
- bp = buf;
+ /* Loop until the socket doesn't have any more data */
- while (1)
+ while ((data = readchar (0)) >= 0)
+ {
+ /* Check for the escape sequence */
+ if (data == '|')
{
- c = readchar ();
- if (c == SERIAL_TIMEOUT)
- {
- if (remote_debug)
- puts_filtered ("Timeout in mid-packet, retrying\n");
- goto whole; /* Start a new packet, count retries */
- }
- if (c == '$')
+ /* If this is the fourth escape, get out */
+ if (++escape_count == 4)
{
- if (remote_debug)
- puts_filtered ("Saw new packet start in middle of old one\n");
- goto whole; /* Start a new packet, count retries */
+ return ENTER_DEBUG;
+ }
+ else
+ { /* This is a '|', but not the fourth in a row.
+ Continue without echoing it. If it isn't actually
+ one of four in a row, it'll be echoed later. */
+ continue;
}
- if (c == '#')
- break;
- if (bp >= buf+PBUFSIZ-1)
- {
- *bp = '\0';
- puts_filtered ("Remote packet too long: ");
- puts_filtered (buf);
- puts_filtered ("\n");
- goto whole;
- }
- *bp++ = c;
- csum += c;
}
- *bp = 0;
-
- c1 = fromhex (readchar ());
- c2 = fromhex (readchar ());
- if ((csum & 0xff) == (c1 << 4) + c2)
- break;
- printf_filtered ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
- (c1 << 4) + c2, csum & 0xff);
- puts_filtered (buf);
- puts_filtered ("\n");
+ else /* Not a '|' */
+ {
+ /* Ensure any pending '|'s are flushed. */
- /* Try the whole thing again. */
-whole:
- if (++retries < MAX_RETRIES)
- {
- SERIAL_WRITE (remote_desc, "-", 1);
+ for ( ; escape_count > 0; escape_count--)
+ putchar('|');
}
- else
+
+ if (data == '\r') /* If this is a return character, */
+ continue; /* - just supress it. */
+
+ if (echo_check != -1) /* Check for echo of user input. */
{
- printf_unfiltered ("Ignoring packet error, continuing...\n");
- break;
+ if (tty_input[echo_check] == data)
+ {
+ echo_check++; /* Character matched user input: */
+ continue; /* Continue without echoing it. */
+ }
+ else if ((data == '\n') && (tty_input[echo_check] == '\r'))
+ { /* End of the line (and of echo checking). */
+ echo_check = -1; /* No more echo supression */
+ continue; /* Continue without echoing. */
+ }
+ else
+ { /* Failed check for echo of user input.
+ We now have some suppressed output to flush! */
+ int j;
+
+ for (j = 0; j < echo_check; j++)
+ putchar (tty_input[j]);
+ echo_check = -1;
+ }
}
+ putchar (data); /* Default case: output the char. */
}
-out:
-
- SERIAL_WRITE (remote_desc, "+", 1);
-
- if (remote_debug)
- fprintf_unfiltered (gdb_stderr,"Packet received: %s\n", buf);
-}
-\f
-static void
-remote_kill ()
-{
- putpkt ("k");
- /* 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. */
- target_mourn_inferior ();
+ if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */
+ return READ_MORE; /* Try to read some more */
+ else
+ return FATAL_ERROR; /* Trouble, bail out */
}
-static void
-remote_mourn ()
+static int
+readtty ()
{
- unpush_target (&remote_ops);
- generic_mourn_inferior ();
-}
-\f
-#ifdef REMOTE_BREAKPOINT
+ int status;
+ int tty_bytecount;
-/* On some machines, e.g. 68k, we may use a different breakpoint instruction
- than other targets. */
-static unsigned char break_insn[] = REMOTE_BREAKPOINT;
+ /* First, read a buffer full from the terminal */
+ tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1);
+ if (tty_bytecount == -1)
+ {
+ perror ("readtty: read failed");
+ return FATAL_ERROR;
+ }
-/* Check that it fits in BREAKPOINT_MAX bytes. */
-static unsigned char check_break_insn_size[BREAKPOINT_MAX] = REMOTE_BREAKPOINT;
+ /* Remove a quoted newline. */
+ if (tty_input[tty_bytecount - 1] == '\n' &&
+ tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */
+ {
+ tty_input[--tty_bytecount] = 0; /* remove newline */
+ tty_input[--tty_bytecount] = 0; /* remove backslash */
+ }
-#else /* No REMOTE_BREAKPOINT. */
+ /* Turn trailing newlines into returns */
+ if (tty_input[tty_bytecount - 1] == '\n')
+ tty_input[tty_bytecount - 1] = '\r';
-/* Same old breakpoint instruction. This code does nothing different
- than mem-break.c. */
-static unsigned char break_insn[] = BREAKPOINT;
+ /* If the line consists of a ~, enter debugging mode. */
+ if ((tty_input[0] == '~') && (tty_bytecount == 2))
+ return ENTER_DEBUG;
-#endif /* No REMOTE_BREAKPOINT. */
+ /* Make this a zero terminated string and write it out */
+ tty_input[tty_bytecount] = 0;
+ if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount))
+ {
+ perror_with_name ("readtty: write failed");
+ return FATAL_ERROR;
+ }
-/* Insert a breakpoint on targets that don't have any better breakpoint
- support. We read the contents of the target location and stash it,
- then overwrite it with a breakpoint instruction. ADDR is the target
- location in the target machine. CONTENTS_CACHE is a pointer to
- memory allocated for saving the target contents. It is guaranteed
- by the caller to be long enough to save sizeof BREAKPOINT bytes (this
- is accomplished via BREAKPOINT_MAX). */
+ return READ_MORE;
+}
static int
-remote_insert_breakpoint (addr, contents_cache)
- CORE_ADDR addr;
- char *contents_cache;
+minitelnet ()
{
- int val;
+ fd_set input; /* file descriptors for select */
+ int tablesize; /* max number of FDs for select */
+ int status;
+ int quit_count = 0;
- val = target_read_memory (addr, contents_cache, sizeof break_insn);
+ extern int escape_count; /* global shared by readsocket */
+ extern int echo_check; /* ditto */
- if (val == 0)
- val = target_write_memory (addr, (char *)break_insn, sizeof break_insn);
+ escape_count = 0;
+ echo_check = -1;
- return val;
+ tablesize = 8 * sizeof (input);
+
+ for (;;)
+ {
+ /* Check for anything from our socket - doesn't block. Note that
+ this must be done *before* the select as there may be
+ buffered I/O waiting to be processed. */
+
+ if ((status = readsocket ()) == FATAL_ERROR)
+ {
+ error ("Debugging terminated by communications error");
+ }
+ else if (status != READ_MORE)
+ {
+ return (status);
+ }
+
+ fflush(stdout); /* Flush output before blocking */
+
+ /* Now block on more socket input or TTY input */
+
+ FD_ZERO (&input);
+ FD_SET (fileno(stdin), &input);
+ FD_SET (remote_desc->fd, &input);
+
+ status = select (tablesize, &input, 0, 0, 0);
+ if ((status == -1) && (errno != EINTR))
+ {
+ error ("Communications error on select %d", errno);
+ }
+
+ /* Handle Control-C typed */
+
+ if (quit_flag)
+ {
+ if ((++quit_count) == 2)
+ {
+ if (query ("Interrupt GDB? "))
+ {
+ printf_filtered ("Interrupted by user.\n");
+ return_to_top_level (RETURN_QUIT);
+ }
+ quit_count = 0;
+ }
+ quit_flag = 0;
+
+ if (remote_break)
+ SERIAL_SEND_BREAK (remote_desc);
+ else
+ SERIAL_WRITE (remote_desc, "\003", 1);
+
+ continue;
+ }
+
+ /* Handle console input */
+
+ if (FD_ISSET (fileno (stdin), &input))
+ {
+ quit_count = 0;
+ echo_check = 0;
+ status = readtty ();
+ if (status == READ_MORE)
+ continue;
+
+ return status; /* telnet session ended */
+ }
+ }
}
static int
-remote_remove_breakpoint (addr, contents_cache)
- CORE_ADDR addr;
- char *contents_cache;
+remote_cisco_wait (pid, status)
+ int pid;
+ struct target_waitstatus *status;
{
- return target_write_memory (addr, contents_cache, sizeof break_insn);
+ if (minitelnet() != ENTER_DEBUG)
+ {
+ error ("Debugging session terminated by protocol error");
+ }
+ putpkt ("?");
+ return remote_wait (pid, status);
+}
+
+static void
+init_remote_cisco_ops ()
+{
+ remote_cisco_ops.to_shortname = "cisco";
+ remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol";
+ remote_cisco_ops.to_doc =
+ "Use a remote machine via TCP, using a cisco-specific protocol.\n\
+Specify the serial device it is connected to (e.g. host:2020).";
+ remote_cisco_ops.to_open = remote_cisco_open;
+ remote_cisco_ops.to_close = remote_cisco_close;
+ remote_cisco_ops.to_detach = remote_detach;
+ remote_cisco_ops.to_resume = remote_resume;
+ remote_cisco_ops.to_wait = remote_cisco_wait;
+ remote_cisco_ops.to_fetch_registers = remote_fetch_registers;
+ remote_cisco_ops.to_store_registers = remote_store_registers;
+ remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store;
+ remote_cisco_ops.to_xfer_memory = remote_xfer_memory;
+ remote_cisco_ops.to_files_info = remote_files_info;
+ remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint;
+ remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint;
+ remote_cisco_ops.to_kill = remote_kill;
+ remote_cisco_ops.to_load = generic_load;
+ remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn;
+ remote_cisco_ops.to_thread_alive = remote_thread_alive;
+ remote_cisco_ops.to_find_new_threads = remote_threads_info;
+ remote_cisco_ops.to_stratum = process_stratum;
+ remote_cisco_ops.to_has_all_memory = 1;
+ remote_cisco_ops.to_has_memory = 1;
+ remote_cisco_ops.to_has_stack = 1;
+ remote_cisco_ops.to_has_registers = 1;
+ remote_cisco_ops.to_has_execution = 1;
+ remote_cisco_ops.to_magic = OPS_MAGIC;
+}
+
+static void
+build_remote_gdbarch_data ()
+{
+ tty_input = xmalloc (PBUFSIZ);
}
-\f
-/* Define the target subroutine names */
-struct target_ops remote_ops = {
- "remote", /* to_shortname */
- "Remote serial target in gdb-specific protocol", /* to_longname */
- "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
-Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
- remote_open, /* to_open */
- remote_close, /* to_close */
- NULL, /* to_attach */
- remote_detach, /* to_detach */
- remote_resume, /* to_resume */
- remote_wait, /* to_wait */
- remote_fetch_registers, /* to_fetch_registers */
- remote_store_registers, /* to_store_registers */
- remote_prepare_to_store, /* to_prepare_to_store */
- remote_xfer_memory, /* to_xfer_memory */
- remote_files_info, /* to_files_info */
-
- remote_insert_breakpoint, /* to_insert_breakpoint */
- remote_remove_breakpoint, /* to_remove_breakpoint */
-
- NULL, /* to_terminal_init */
- NULL, /* to_terminal_inferior */
- NULL, /* to_terminal_ours_for_output */
- NULL, /* to_terminal_ours */
- NULL, /* to_terminal_info */
- remote_kill, /* to_kill */
- generic_load, /* to_load */
- NULL, /* to_lookup_symbol */
- NULL, /* to_create_inferior */
- remote_mourn, /* to_mourn_inferior */
- 0, /* to_can_run */
- 0, /* to_notice_signals */
- process_stratum, /* to_stratum */
- NULL, /* to_next */
- 1, /* to_has_all_memory */
- 1, /* to_has_memory */
- 1, /* to_has_stack */
- 1, /* to_has_registers */
- 1, /* to_has_execution */
- NULL, /* sections */
- NULL, /* sections_end */
- OPS_MAGIC /* to_magic */
-};
-#endif /* Use remote. */
void
_initialize_remote ()
{
-#if !defined(DONT_USE_REMOTE)
+ /* architecture specific data */
+ build_remote_gdbarch_data ();
+ register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL);
+ register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data);
+
+ /* runtime constants - we retain the value of remote_write_size
+ across architecture swaps. */
+ remote_write_size = PBUFSIZ;
+
+ init_remote_ops ();
add_target (&remote_ops);
+
+ init_extended_remote_ops ();
+ add_target (&extended_remote_ops);
+
+ init_remote_cisco_ops ();
+ add_target (&remote_cisco_ops);
+
+#if 0
+ init_remote_threadtests ();
#endif
+
+ add_cmd ("compare-sections", class_obscure, compare_sections_command,
+ "Compare section data on target to the exec file.\n\
+Argument is a single section name (default: all loaded sections).",
+ &cmdlist);
+
+ add_cmd ("packet", class_maintenance, packet_command,
+ "Send an arbitrary packet to a remote target.\n\
+ maintenance packet TEXT\n\
+If GDB is talking to an inferior via the GDB serial protocol, then\n\
+this command sends the string TEXT to the inferior, and displays the\n\
+response packet. GDB supplies the initial `$' character, and the\n\
+terminating `#' character and checksum.",
+ &maintenancelist);
+
+ add_show_from_set
+ (add_set_cmd ("remotetimeout", no_class,
+ var_integer, (char *)&remote_timeout,
+ "Set timeout value for remote read.\n",
+ &setlist),
+ &showlist);
+
+ add_show_from_set
+ (add_set_cmd ("remotebreak", no_class,
+ var_integer, (char *)&remote_break,
+ "Set whether to send break if interrupted.\n",
+ &setlist),
+ &showlist);
+
+ add_show_from_set
+ (add_set_cmd ("remotewritesize", no_class,
+ var_integer, (char *)&remote_write_size,
+ "Set the maximum number of bytes per memory write packet.\n",
+ &setlist),
+ &showlist);
+
+ remote_address_size = TARGET_PTR_BIT;
+ add_show_from_set
+ (add_set_cmd ("remoteaddresssize", class_obscure,
+ var_integer, (char *)&remote_address_size,
+ "Set the maximum size of the address (in bits) \
+in a memory packet.\n",
+ &setlist),
+ &showlist);
+
+ add_show_from_set
+ (add_set_cmd ("remotebinarydownload", no_class,
+ var_boolean, (char *) &remote_binary_download,
+ "Set binary downloads.\n", &setlist),
+ &showlist);
+
+ add_info ("remote-process", remote_info_process,
+ "Query the remote system for process info.");
+
}
projects / deliverable / binutils-gdb.git / blobdiff