/* Remote target communications for serial-line targets in custom GDB protocol
- Copyright 1988, 1991, 1992, 1993, 1994, 1995 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.
If AA..AA is omitted,
resume at same address.
- continue with Csig;AA Continue with signal sig (hex signal
- signal number).
+ 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 Like 'C' but step not continue.
+ step with Ssig;AA..AA Like 'C' but step not continue.
signal
last signal ? Reply the current reason for stopping.
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.
targets.
or... XAA The process terminated with signal
AA.
- or... Otext Send text to stdout. This can happen
- at any time while the program is
- running and the debugger should
- continue to wait for 'W', 'T', etc.
+ 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
"0* " means the same as "0000". */
#include "defs.h"
-#include <string.h>
+#include "gdb_string.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 "thread.h"
+#include "gdbthread.h"
#include "dcache.h"
static void remote_files_info PARAMS ((struct target_ops *ignore));
-static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
+static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char * myaddr,
int len, int should_write,
- struct target_ops *target));
+ struct target_ops * target));
static void remote_prepare_to_store PARAMS ((void));
static void remote_resume PARAMS ((int pid, int step,
enum target_signal siggnal));
-static int remote_start_remote PARAMS ((char *dummy));
+static int remote_start_remote PARAMS ((PTR));
static void remote_open PARAMS ((char *name, int from_tty));
+static void extended_remote_open PARAMS ((char *name, int from_tty));
+
+static void remote_open_1 PARAMS ((char *, int, struct target_ops *,
+ int extended_p));
+
static void remote_close PARAMS ((int quitting));
static void remote_store_registers PARAMS ((int regno));
-static void getpkt PARAMS ((char *buf, int forever));
+static void remote_mourn PARAMS ((void));
+
+static void extended_remote_restart PARAMS ((void));
-static int putpkt PARAMS ((char *buf));
+static void extended_remote_mourn PARAMS ((void));
+
+static void extended_remote_create_inferior PARAMS ((char *, char *, char **));
+
+static void remote_mourn_1 PARAMS ((struct target_ops *));
static void remote_send PARAMS ((char *buf));
static int readchar PARAMS ((int timeout));
-static int remote_wait PARAMS ((int pid, struct target_waitstatus *status));
+static int remote_wait PARAMS ((int pid, struct target_waitstatus * status));
static void remote_kill PARAMS ((void));
static int tohex PARAMS ((int nib));
-static int fromhex PARAMS ((int a));
-
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));
-extern struct target_ops remote_ops; /* Forward decl */
+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 remote_stop PARAMS ((void));
+
+static int ishex PARAMS ((int ch, int *val));
+
+static int stubhex PARAMS ((int ch));
+
+static int remote_query PARAMS ((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));
+
+char *unpack_varlen_hex PARAMS ((char *buff, int *result));
+
+static char *unpack_nibble PARAMS ((char *buf, int *val));
+
+static char *pack_nibble PARAMS ((char *buf, int nibble));
+
+static char *pack_hex_byte PARAMS ((char *pkt, unsigned char byte));
+
+static char *unpack_byte PARAMS ((char *buf, int *value));
+
+static char *pack_int PARAMS ((char *buf, int value));
+
+static char *unpack_int PARAMS ((char *buf, int *value));
+
+static char *unpack_string PARAMS ((char *src, char *dest, int length));
+
+static char *pack_threadid PARAMS ((char *pkt, threadref *id));
+
+static char *unpack_threadid PARAMS ((char *inbuf, threadref *id));
+
+void int_to_threadref PARAMS ((threadref *id, int value));
+
+static int threadref_to_int PARAMS ((threadref *ref));
+
+static void copy_threadref PARAMS ((threadref *dest, threadref *src));
+
+static int threadmatch PARAMS ((threadref *dest, threadref *src));
+
+static char *pack_threadinfo_request PARAMS ((char *pkt, int mode,
+ threadref *id));
+
+static int remote_unpack_thread_info_response PARAMS ((char *pkt,
+ threadref *expectedref,
+ struct gdb_ext_thread_info *info));
+
+
+static int remote_get_threadinfo PARAMS ((threadref *threadid,
+ int fieldset, /*TAG mask */
+ struct gdb_ext_thread_info *info));
+
+static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref *ref,
+ int selection,
+ struct gdb_ext_thread_info *info));
+
+static char *pack_threadlist_request PARAMS ((char *pkt, int startflag,
+ int threadcount,
+ threadref *nextthread));
+
+static int parse_threadlist_response PARAMS ((char *pkt,
+ int result_limit,
+ threadref *original_echo,
+ threadref *resultlist,
+ int *doneflag));
+
+static int remote_get_threadlist PARAMS ((int startflag,
+ threadref *nextthread,
+ int result_limit,
+ int *done,
+ int *result_count,
+ threadref *threadlist));
+
+typedef int (*rmt_thread_action) (threadref *ref, void *context);
+
+static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction,
+ void *context, int looplimit));
+
+static int remote_newthread_step PARAMS ((threadref *ref, void *context));
+
+static int remote_current_thread PARAMS ((int oldpid));
+
+int remote_find_new_threads PARAMS ((void));
+
+static void record_currthread PARAMS ((int currthread));
+
+static void init_remote_threads PARAMS ((void));
+
+/* exported functions */
+
+extern int fromhex PARAMS ((int a));
+
+extern void getpkt PARAMS ((char *buf, int forever));
+
+extern int putpkt PARAMS ((char *buf));
+
+void remote_console_output PARAMS ((char *));
+
+/* 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;
+
+static struct target_thread_vector remote_thread_vec;
/* 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 remote_timeout = 2;
+/* 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;
+
+/* Has the user attempted to interrupt the target? If so, then offer
+ the user the opportunity to bail out completely if he interrupts
+ again. */
+static int interrupted_already = 0;
/* 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;
/* 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
#define PBUFSIZ (REGISTER_BYTES * 2 + 32)
#endif
+
+/* 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). */
+
+static int remote_write_size = PBUFSIZ;
+
+/* 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. */
+
+static int remote_address_size;
+
+/* 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 int remote_register_buf_size = 0;
+
/* 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;
+/* These are pointers to hook functions that may be set in order to
+ modify resume/wait behavior for a particular architecture. */
+
+void (*target_resume_hook) PARAMS ((void));
+void (*target_wait_loop_hook) PARAMS ((void));
+
\f
-/* These are the threads which we last sent to the remote system. -1 for all
- or -2 for not sent yet. */
-int general_thread;
-int cont_thread;
+
+/* 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 cont_thread;
+
+/* Call this function as a result of
+ 1) A halt indication (T packet) containing a thread id
+ 2) A direct query of currthread
+ 3) Successful execution of set thread
+ */
+
+static void
+record_currthread (currthread)
+ int currthread;
+{
+#if 0 /* target_wait must not modify inferior_pid! */
+ inferior_pid = currthread;
+#endif
+ general_thread = currthread;
+#if 0 /* setting cont_thread has a different meaning
+ from having the target report its thread id. */
+ cont_thread = currthread;
+#endif
+ /* 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))
+ add_thread (currthread);
+}
+
+#define MAGIC_NULL_PID 42000
static void
set_thread (th, gen)
{
char buf[PBUFSIZ];
int state = gen ? general_thread : cont_thread;
+
if (state == th)
return;
+
buf[0] = 'H';
buf[1] = gen ? 'g' : 'c';
- if (th == 42000)
+ if (th == MAGIC_NULL_PID)
{
buf[2] = '0';
buf[3] = '\0';
cont_thread = th;
}
\f
-/* Return nonzero if the thread TH is still alive on the remote system. */
+/* Return nonzero if the thread TH is still alive on the remote system. */
static int
remote_thread_alive (th)
buf[0] = 'T';
if (th < 0)
- sprintf (&buf[1], "-%x", -th);
+ sprintf (&buf[1], "-%08x", -th);
else
- sprintf (&buf[1], "%x", th);
+ sprintf (&buf[1], "%08x", th);
putpkt (buf);
getpkt (buf, 0);
return (buf[0] == 'O' && buf[1] == 'K');
}
+
+/* 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. */
+
+#define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
+
+/* encode 64 bits in 16 chars of hex */
+
+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;
+}
+
+static int
+stubhex (ch)
+ int ch;
+{
+ 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;
+}
+
+static int
+stub_unpack_int (buff, fieldlength)
+ char *buff;
+ int fieldlength;
+{
+ int nibble;
+ int retval = 0;
+
+ while (fieldlength)
+ {
+ nibble = stubhex (*buff++);
+ retval |= nibble;
+ fieldlength--;
+ if (fieldlength)
+ retval = retval << 4;
+ }
+ return retval;
+}
+
+char *
+unpack_varlen_hex (buff, result)
+ char *buff; /* packet to parse */
+ int *result;
+{
+ int nibble;
+ int retval = 0;
+
+ while (ishex (*buff, &nibble))
+ {
+ buff++;
+ retval = retval << 4;
+ retval |= nibble & 0x0f;
+ }
+ *result = retval;
+ return buff;
+}
+
+static char *
+unpack_nibble (buf, val)
+ char *buf;
+ int *val;
+{
+ ishex (*buf++, val);
+ return buf;
+}
+
+static char *
+pack_nibble (buf, nibble)
+ char *buf;
+ int nibble;
+{
+ *buf++ = hexchars[(nibble & 0x0f)];
+ return buf;
+}
+
+static char *
+pack_hex_byte (pkt, byte)
+ char *pkt;
+ unsigned char byte;
+{
+ *pkt++ = hexchars[(byte >> 4) & 0xf];
+ *pkt++ = hexchars[(byte & 0xf)];
+ return pkt;
+}
+
+static char *
+unpack_byte (buf, value)
+ char *buf;
+ int *value;
+{
+ *value = stub_unpack_int (buf, 2);
+ return buf + 2;
+}
+
+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;
+}
+
+static char *
+unpack_int (buf, value)
+ char *buf;
+ int *value;
+{
+ *value = stub_unpack_int (buf, 8);
+ return buf + 8;
+}
+
+#if 0 /* currently unused, uncomment when needed */
+static char *pack_string PARAMS ((char *pkt, char *string));
+
+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)
+ {
+ ch = *string++;
+ if ((ch == '\0') || (ch == '#'))
+ ch = '*'; /* Protect encapsulation */
+ *pkt++ = ch;
+ }
+ return pkt;
+}
+#endif /* 0 (unused) */
+
+static char *
+unpack_string (src, dest, length)
+ char *src;
+ char *dest;
+ int length;
+{
+ while (length--)
+ *dest++ = *src++;
+ *dest = '\0';
+ return src;
+}
+
+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;
+}
+
+
+static char *
+unpack_threadid (inbuf, id)
+ char *inbuf;
+ threadref *id;
+{
+ char *altref;
+ char *limit = inbuf + BUF_THREAD_ID_SIZE;
+ int x, y;
+
+ altref = (char *) id;
+
+ while (inbuf < limit)
+ {
+ x = stubhex (*inbuf++);
+ y = stubhex (*inbuf++);
+ *altref++ = (x << 4) | y;
+ }
+ return inbuf;
+}
+
+/* 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. */
+
+void
+int_to_threadref (id, value)
+ threadref *id;
+ int value;
+{
+ 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);
+}
+
+static int
+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;
+{
+ int i;
+ unsigned char *csrc, *cdest;
+
+ csrc = (unsigned char *) src;
+ cdest = (unsigned char *) dest;
+ i = 8;
+ while (i--)
+ *cdest++ = *csrc++;
+}
+
+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;
+}
+
+/*
+ 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;
+ }
+ copy_threadref (&info->threadid, &ref);
+
+ /* Loop on tagged fields , try to bail if somthing goes wrong */
+
+ while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */
+ {
+ 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 retval;
+}
+
+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;
+}
+
+/* Unfortunately, 61 bit thread-ids are bigger than the internal
+ representation of a threadid. */
+
+static int
+adapt_remote_get_threadinfo (ref, selection, info)
+ gdb_threadref *ref;
+ int selection;
+ struct gdb_ext_thread_info *info;
+{
+ threadref lclref;
+
+ int_to_threadref (&lclref, *ref);
+ return remote_get_threadinfo (&lclref, selection, info);
+}
+
+/* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
+
+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;
+}
+
+/* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
+
+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))
+ {
+ pkt = unpack_threadid (pkt, resultlist++);
+ if (resultcount++ >= result_limit)
+ break;
+ }
+ if (doneflag)
+ *doneflag = done;
+ return resultcount;
+}
+
+static int
+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;
+
+{
+ static threadref echo_nextthread;
+ char threadlist_packet[PBUFSIZ];
+ char t_response[PBUFSIZ];
+ int result = 1;
+
+ /* 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))
+ {
+ /* 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;
+}
+
+int
+remote_find_new_threads ()
+{
+ int ret;
+
+ ret = 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);
+ return ret;
+}
+
+/* Initialize the thread vector which is used by threads.c */
+/* The thread stub is a package, it has an initializer */
+
+static void
+init_remote_threads ()
+{
+ remote_thread_vec.find_new_threads = remote_find_new_threads;
+ remote_thread_vec.get_thread_info = adapt_remote_get_threadinfo;
+}
+
+\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. */
static void
get_offsets ()
{
- char buf[PBUFSIZ];
- int nvals;
+ char buf[PBUFSIZ], *ptr;
+ int lose;
CORE_ADDR text_addr, data_addr, bss_addr;
struct section_offsets *offs;
getpkt (buf, 0);
if (buf[0] == '\000')
- return; /* Return silently. Stub doesn't support this
- command. */
+ return; /* Return silently. Stub doesn't support
+ this command. */
if (buf[0] == 'E')
{
warning ("Remote failure reply: %s", buf);
return;
}
- nvals = sscanf (buf, "Text=%lx;Data=%lx;Bss=%lx", &text_addr, &data_addr,
- &bss_addr);
- if (nvals != 3)
+ /* 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)
static int
remote_start_remote (dummy)
- char *dummy;
+ PTR dummy;
{
immediate_quit = 1; /* Allow user to interrupt it */
/* 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 */
/* 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 (name, from_tty)
+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 serial\n\
-device is attached to the remote system (e.g. /dev/ttya).");
+ 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 (&remote_ops);
+ unpush_target (target);
remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes);
puts_filtered (name);
puts_filtered ("\n");
}
- push_target (&remote_ops); /* Switch to using remote target now */
+ push_target (target); /* Switch to using remote target now */
+
+ /* The target vector does not have the thread functions in it yet,
+ so we use this function to call back into the thread module and
+ register the thread vector and its contained functions. */
+ bind_target_thread_vector (&remote_thread_vec);
- /* 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. */
+ /* 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;
cont_thread = -2;
- /* 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. */
+ /* 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 = 42000;
+ 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, (char *)0,
- "Couldn't establish connection to remote target\n", RETURN_MASK_ALL))
- pop_target();
+ 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);
+ }
}
-/* 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. */
+/* 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. */
-static int
+int
fromhex (a)
int a;
{
return a - '0';
else if (a >= 'a' && a <= 'f')
return a - 'a' + 10;
- else
+ else if (a >= 'A' && a <= 'F')
+ return a - 'A' + 10;
+ else
error ("Reply contains invalid hex digit %d", a);
}
/* Tell the remote machine to resume. */
static enum target_signal last_sent_signal = TARGET_SIGNAL_0;
-int last_sent_step;
+
+static int last_sent_step;
static void
remote_resume (pid, step, siggnal)
char buf[PBUFSIZ];
if (pid == -1)
- set_thread (inferior_pid, 0);
+ set_thread (0, 0); /* run any thread */
else
- set_thread (pid, 0);
+ 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';
/* Send ^C to target to halt it. Target will respond, and send us a
packet. */
+static void (*ofunc) PARAMS ((int));
+
static void
remote_interrupt (signo)
int signo;
{
- /* If this doesn't work, try more severe steps. */
- signal (signo, remote_interrupt_twice);
-
- if (remote_debug)
- printf_unfiltered ("remote_interrupt called\n");
-
- SERIAL_WRITE (remote_desc, "\003", 1); /* Send a ^C */
+ remote_stop ();
+ signal (signo, remote_interrupt);
}
-
-static void (*ofunc)();
-
-/* The user typed ^C twice. */
+
static void
-remote_interrupt_twice (signo)
- int signo;
+remote_stop ()
{
- signal (signo, ofunc);
-
- interrupt_query ();
+ if (!interrupted_already)
+ {
+ /* Send a break or a ^C, depending on user preference. */
+ interrupted_already = 1;
- signal (signo, remote_interrupt);
+ if (remote_debug)
+ printf_unfiltered ("remote_stop called\n");
+
+ if (remote_break)
+ SERIAL_SEND_BREAK (remote_desc);
+ else
+ SERIAL_WRITE (remote_desc, "\003", 1);
+ }
+ else
+ {
+ signal (SIGINT, ofunc);
+ interrupt_query ();
+ signal (SIGINT, remote_interrupt);
+ interrupted_already = 0;
+ }
}
/* Ask the user what to do when an interrupt is received. */
}
/* If nonzero, ignore the next kill. */
+
int kill_kludge;
-/* 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). */
+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" (though it's not clear
+ what, if anything, that means in the case of this target). */
static int
remote_wait (pid, status)
{
unsigned char *p;
- ofunc = (void (*)()) signal (SIGINT, remote_interrupt);
+ interrupted_already = 0;
+ 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 */
n... = register number
r... = register contents
*/
-
p = &buf[3]; /* after Txx */
while (*p)
unsigned char *p1;
char *p_temp;
- regno = strtol (p, &p_temp, 16); /* Read the register number */
+ /* Read the register number */
+ regno = strtol ((const char *) p, &p_temp, 16);
p1 = (unsigned char *)p_temp;
- if (p1 == p)
+ if (p1 == p) /* No register number present here */
{
- p1 = (unsigned char *) strchr (p, ':');
+ p1 = (unsigned char *) strchr ((const char *) p, ':');
if (p1 == NULL)
- warning ("Malformed packet (missing colon): %s\n\
+ warning ("Malformed packet(a) (missing colon): %s\n\
Packet: '%s'\n",
p, buf);
- if (strncmp (p, "thread", p1 - p) == 0)
+ if (strncmp ((const char *) p, "thread", p1 - p) == 0)
{
- thread_num = strtol (++p1, &p_temp, 16);
- p = (unsigned char *)p_temp;
+ 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 (missing colon): %s\n\
+ warning ("Malformed packet(b) (missing colon): %s\n\
Packet: '%s'\n",
p, buf);
if (regno >= NUM_REGS)
- warning ("Remote sent bad register number %d: %s\n\
+ warning ("Remote sent bad register number %ld: %s\n\
Packet: '%s'\n",
regno, p, buf);
}
if (*p++ != ';')
- warning ("Remote register badly formatted: %s", buf);
+ {
+ warning ("Remote register badly formatted: %s", buf);
+ warning (" here: %s",p);
+ }
}
}
/* fall through */
goto got_status;
case 'O': /* Console output */
- fputs_filtered ((char *)(buf + 1), gdb_stdout);
+ remote_console_output (buf + 1);
continue;
case '\0':
if (last_sent_signal != TARGET_SIGNAL_0)
last_sent_signal = TARGET_SIGNAL_0;
target_terminal_inferior ();
- strcpy (buf, last_sent_step ? "s" : "c");
- putpkt (buf);
+ strcpy ((char *) buf, last_sent_step ? "s" : "c");
+ putpkt ((char *) buf);
continue;
}
/* else fallthrough */
/* Initial thread value can only be acquired via wait, so deal with
this marker which is used before the first thread value is
acquired. */
- if (inferior_pid == 42000)
+ if (inferior_pid == MAGIC_NULL_PID)
{
inferior_pid = thread_num;
- add_thread (inferior_pid);
+ if (!in_thread_list (inferior_pid))
+ add_thread (inferior_pid);
}
return thread_num;
}
}
/* 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)
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);
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] < 'a' || buf[0] > 'f')
+ && buf[0] != 'x') /* New: unavailable register value */
{
if (remote_debug)
printf_unfiltered ("Bad register packet; fetching a new packet\n");
print a second warning. */
goto supply_them;
}
- regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
+ if (p[0] == 'x' && p[1] == 'x')
+ regs[i] = 0; /* 'x' */
+ else
+ regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
p += 2;
}
warning ("Remote reply is too short: %s", buf);
#endif
}
-
- supply_them:
+
+ 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
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'
+/* 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
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)
-*/
+ 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;
{
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;
+}
+
/* 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.
char *myaddr;
int len;
{
- char buf[PBUFSIZ];
- int i;
- char *p;
+ 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);
+
+ /* 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)
+ {
+ char buf[PBUFSIZ];
+ char *p;
+ int todo;
+ int i;
+
+ todo = min (len, max_buf_size / 2); /* num bytes that will fit */
- /* FIXME-32x64: Need a version of print_address_numeric which puts the
- result in a buffer like sprintf. */
- sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, len);
+ /* 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++ = ':';
+ *p = '\0';
- /* We send target system values byte by byte, in increasing byte addresses,
- each byte encoded as two hex characters. */
+ /* We send target system values byte by byte, in increasing byte
+ addresses, each byte encoded as two hex characters. */
- p = buf + strlen (buf);
- for (i = 0; i < len; i++)
- {
- *p++ = tohex ((myaddr[i] >> 4) & 0xf);
- *p++ = tohex (myaddr[i] & 0xf);
- }
- *p = '\0';
+ for (i = 0; i < todo; i++)
+ {
+ *p++ = tohex ((myaddr[i] >> 4) & 0xf);
+ *p++ = tohex (myaddr[i] & 0xf);
+ }
+ *p = '\0';
- putpkt (buf);
- getpkt (buf, 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;
+ 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;
+ }
+ myaddr += todo;
+ memaddr += todo;
+ len -= todo;
}
- return len;
+ return origlen;
}
/* Read memory data directly from the remote machine.
char *myaddr;
int len;
{
- char buf[PBUFSIZ];
- int i;
- char *p;
+ int max_buf_size; /* Max size of packet output buffer */
+ int origlen;
- if (len > PBUFSIZ / 2 - 1)
- abort ();
+ /* Chop the transfer down if necessary */
- /* FIXME-32x64: Need a version of print_address_numeric which puts the
- result in a buffer like sprintf. */
- sprintf (buf, "m%lx,%x", (unsigned long) memaddr, len);
- putpkt (buf);
- getpkt (buf, 0);
+ 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);
- if (buf[0] == 'E')
+ origlen = len;
+ while (len > 0)
{
- /* 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;
- }
+ 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 < len; 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. */
- break;
- myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
- p += 2;
+ 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 i;
+ return origlen;
}
\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. */
+/* 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)
+remote_xfer_memory (memaddr, myaddr, len, should_write, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int should_write;
struct target_ops *target; /* ignored */
{
- return dcache_xfer_memory (remote_dcache, memaddr, myaddr, len, should_write);
+#ifdef REMOTE_TRANSLATE_XFER_ADDRESS
+ CORE_ADDR targaddr;
+ int targlen;
+ REMOTE_TRANSLATE_XFER_ADDRESS (memaddr, len, targaddr, targlen);
+ if (targlen == 0)
+ return 0;
+ memaddr = targaddr;
+ len = targlen;
+#endif
+
+ return dcache_xfer_memory (remote_dcache, memaddr, myaddr,
+ len, should_write);
}
}
}
-/* Send the command in BUF to the remote machine,
- and read the reply into BUF.
- Report an error if we get an error reply. */
+/* 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)
error ("Remote failure reply: %s", buf);
}
-/* Send a packet to the remote machine, with error checking.
- The data of the packet is in BUF. */
+/* Display a null-terminated packet on stdout, for debugging, using C
+ string notation. */
-static int
+static void
+print_packet (buf)
+ char *buf;
+{
+ puts_filtered ("\"");
+ while (*buf)
+ gdb_printchar (*buf++, gdb_stdout, '"');
+ puts_filtered ("\"");
+}
+
+
+/* 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 $, # and checksum, and for a possible /0 if we are
+ debugging (remote_debug) and want to print the sent packet as a string */
+
+int
putpkt (buf)
char *buf;
{
/* Copy the packet into buffer BUF2, encapsulating it
and giving it a checksum. */
- if (cnt > sizeof(buf2) - 5) /* Prosanity check */
- abort();
+ if (cnt > (int) sizeof (buf2) - 5) /* Prosanity check */
+ abort ();
p = buf2;
*p++ = '$';
{
*p = '\0';
printf_unfiltered ("Sending packet: %s...", buf2);
- gdb_flush(gdb_stdout);
+ gdb_flush (gdb_stdout);
}
if (SERIAL_WRITE (remote_desc, buf2, p - buf2))
perror_with_name ("putpkt: write failed");
{
case '+':
if (remote_debug)
- printf_unfiltered("Ack\n");
+ printf_unfiltered ("Ack\n");
return 1;
case SERIAL_TIMEOUT:
tcount ++;
{
char junkbuf[PBUFSIZ];
- /* It's probably an old response, and we're out of sync. Just
- gobble up the packet and ignore it. */
+ /* 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 + */
}
#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. */
+ 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;
}
}
-/* 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. */
+/* 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)
}
}
-/* 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. */
+/* 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
+void
getpkt (buf, forever)
char *buf;
int forever;
{
- char *bp;
int c;
int tries;
int timeout;
if (val == 1)
{
if (remote_debug)
- fprintf_unfiltered (gdb_stderr, "Packet received: %s\n", buf);
+ fprintf_unfiltered (gdb_stdout, "Packet received: %s\n", buf);
SERIAL_WRITE (remote_desc, "+", 1);
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 (putpkt, "k", "", RETURN_MASK_ERROR);
+ 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. */
static void
remote_mourn ()
{
- unpush_target (&remote_ops);
+ 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 ();
}
-\f
-#ifdef REMOTE_BREAKPOINT
+/* 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. */
-static unsigned char break_insn[] = REMOTE_BREAKPOINT;
+ 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
-/* Check that it fits in BREAKPOINT_MAX bytes. */
-static unsigned char check_break_insn_size[BREAKPOINT_MAX] = REMOTE_BREAKPOINT;
+#ifdef REMOTE_BREAKPOINT
-#else /* No 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
-/* Same old breakpoint instruction. This code does nothing different
- than mem-break.c. */
-static unsigned char break_insn[] = BREAKPOINT;
+static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT;
+static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT;
-#endif /* No 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,
CORE_ADDR addr;
char *contents_cache;
{
+#ifdef REMOTE_BREAKPOINT
int val;
- val = target_read_memory (addr, contents_cache, sizeof break_insn);
+ val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
if (val == 0)
- val = target_write_memory (addr, (char *)break_insn, sizeof break_insn);
+ {
+ 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
CORE_ADDR addr;
char *contents_cache;
{
- return target_write_memory (addr, contents_cache, sizeof break_insn);
+#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 */
}
-\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 */
- remote_thread_alive, /* to_thread_alive */
- 0, /* to_stop */
- 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 */
-};
+/* 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)
+ char 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 PBUFSIZE - 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;
+}
+
+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");
+}
+
+static int
+thread_display_step (ref, context)
+ threadref *ref;
+ void *context;
+{
+ /* output_threadid(" threadstep ",ref); *//* simple test */
+ return get_and_display_threadinfo (ref);
+}
+
+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
+init_remote_threadtests (void)
+{
+ 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 ");
+}
+
+#endif /* 0 */
+
+static void
+init_remote_ops ()
+{
+ 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_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;
+}
+
+/* Set up the extended remote vector by making a copy of the standard
+ remote vector and adding to it. */
+
+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;
+}
void
_initialize_remote ()
{
+ init_remote_ops ();
add_target (&remote_ops);
+
+ init_extended_remote_ops ();
+ add_target (&extended_remote_ops);
+ init_remote_threads ();
+#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);
}
projects / deliverable / binutils-gdb.git / blobdiff