/* Remote target communications for serial-line targets in custom GDB protocol
- Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbthread.h"
#include "remote.h"
#include "regcache.h"
+#include "value.h"
+#include "gdb_assert.h"
#include <ctype.h>
#include <sys/time.h>
void _initialize_remote (void);
+/* Description of the remote protocol. Strictly speeking, when the
+ target is open()ed, remote.c should create a per-target description
+ of the remote protocol using that target's architecture.
+ Unfortunatly, the target stack doesn't include local state. For
+ the moment keep the information in the target's architecture
+ object. Sigh.. */
+
+struct packet_reg
+{
+ long offset; /* Offset into G packet. */
+ long regnum; /* GDB's internal register number. */
+ LONGEST pnum; /* Remote protocol register number. */
+ int in_g_packet; /* Always part of G packet. */
+ /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
+ /* char *name; == REGISTER_NAME (regnum); at present. */
+};
+
+struct remote_state
+{
+ /* Description of the remote protocol registers. */
+ long sizeof_g_packet;
+
+ /* Description of the remote protocol registers indexed by REGNUM
+ (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
+ struct packet_reg *regs;
+
+ /* This is the size (in chars) of the first response to the ``g''
+ packet. It is used as a heuristic when determining the maximum
+ size of memory-read and memory-write packets. A target will
+ typically only reserve a buffer large enough to hold the ``g''
+ packet. The size does not include packet overhead (headers and
+ trailers). */
+ long actual_register_packet_size;
+
+ /* This is the maximum size (in chars) of a non read/write packet.
+ It is also used as a cap on the size of read/write packets. */
+ long remote_packet_size;
+};
+
+/* Handle for retreving the remote protocol data from gdbarch. */
+static struct gdbarch_data *remote_gdbarch_data_handle;
+
+static struct remote_state *
+get_remote_state ()
+{
+ return gdbarch_data (remote_gdbarch_data_handle);
+}
+
+static void *
+init_remote_state (struct gdbarch *gdbarch)
+{
+ int regnum;
+ struct remote_state *rs = xmalloc (sizeof (struct remote_state));
+
+ /* Start out by having the remote protocol mimic the existing
+ behavour - just copy in the description of the register cache. */
+ rs->sizeof_g_packet = REGISTER_BYTES; /* OK use. */
+
+ /* Assume a 1:1 regnum<->pnum table. */
+ rs->regs = xcalloc (NUM_REGS + NUM_PSEUDO_REGS, sizeof (struct packet_reg));
+ for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
+ {
+ struct packet_reg *r = &rs->regs[regnum];
+ r->pnum = regnum;
+ r->regnum = regnum;
+ r->offset = REGISTER_BYTE (regnum);
+ r->in_g_packet = (regnum < NUM_REGS);
+ /* ...size = REGISTER_RAW_SIZE (regnum); */
+ /* ...name = REGISTER_NAME (regnum); */
+ }
+
+ /* Default maximum number of characters in a packet body. Many
+ remote stubs have a hardwired buffer size of 400 bytes
+ (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
+ as the maximum packet-size to ensure that the packet and an extra
+ NUL character can always fit in the buffer. This stops GDB
+ trashing stubs that try to squeeze an extra NUL into what is
+ already a full buffer (As of 1999-12-04 that was most stubs. */
+ rs->remote_packet_size = 400 - 1;
+
+ /* Should rs->sizeof_g_packet needs more space than the
+ default, adjust the size accordingly. Remember that each byte is
+ encoded as two characters. 32 is the overhead for the packet
+ header / footer. NOTE: cagney/1999-10-26: I suspect that 8
+ (``$NN:G...#NN'') is a better guess, the below has been padded a
+ little. */
+ if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2))
+ rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32);
+
+ /* This one is filled in when a ``g'' packet is received. */
+ rs->actual_register_packet_size = 0;
+
+ return rs;
+}
+
+static void
+free_remote_state (struct gdbarch *gdbarch, void *pointer)
+{
+ struct remote_state *data = pointer;
+ xfree (data->regs);
+ xfree (data);
+}
+
+static struct packet_reg *
+packet_reg_from_regnum (struct remote_state *rs, long regnum)
+{
+ if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS)
+ return NULL;
+ else
+ {
+ struct packet_reg *r = &rs->regs[regnum];
+ gdb_assert (r->regnum == regnum);
+ return r;
+ }
+}
+
+static struct packet_reg *
+packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum)
+{
+ int i;
+ for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
+ {
+ struct packet_reg *r = &rs->regs[i];
+ if (r->pnum == pnum)
+ return r;
+ }
+ return NULL;
+}
+
/* */
static struct target_ops remote_ops;
static int remote_async_terminal_ours_p;
\f
-/* This is the size (in chars) of the first response to the ``g''
- packet. It is used as a heuristic when determining the maximum
- size of memory-read and memory-write packets. A target will
- typically only reserve a buffer large enough to hold the ``g''
- packet. The size does not include packet overhead (headers and
- trailers). */
-
-static long actual_register_packet_size;
-
-/* This is the maximum size (in chars) of a non read/write packet. It
- is also used as a cap on the size of read/write packets. */
-
-static long remote_packet_size;
-/* compatibility. */
-#define PBUFSIZ (remote_packet_size)
-
/* User configurable variables for the number of characters in a
- memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the
- default. Some targets need smaller values (fifo overruns, et.al.)
- and some users need larger values (speed up transfers). The
- variables ``preferred_*'' (the user request), ``current_*'' (what
- was actually set) and ``forced_*'' (Positive - a soft limit,
- negative - a hard limit). */
+ memory read/write packet. MIN ((rs->remote_packet_size),
+ rs->sizeof_g_packet) is the default. Some targets need smaller
+ values (fifo overruns, et.al.) and some users need larger values
+ (speed up transfers). The variables ``preferred_*'' (the user
+ request), ``current_*'' (what was actually set) and ``forced_*''
+ (Positive - a soft limit, negative - a hard limit). */
struct memory_packet_config
{
static long
get_memory_packet_size (struct memory_packet_config *config)
{
+ struct remote_state *rs = get_remote_state ();
/* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
law?) that some hosts don't cope very well with large alloca()
calls. Eventually the alloca() code will be replaced by calls to
}
else
{
- what_they_get = remote_packet_size;
+ what_they_get = (rs->remote_packet_size);
/* Limit the packet to the size specified by the user. */
if (config->size > 0
&& what_they_get > config->size)
what_they_get = config->size;
/* Limit it to the size of the targets ``g'' response. */
- if (actual_register_packet_size > 0
- && what_they_get > actual_register_packet_size)
- what_they_get = actual_register_packet_size;
+ if ((rs->actual_register_packet_size) > 0
+ && what_they_get > (rs->actual_register_packet_size))
+ what_they_get = (rs->actual_register_packet_size);
}
if (what_they_get > MAX_REMOTE_PACKET_SIZE)
what_they_get = MAX_REMOTE_PACKET_SIZE;
static long
get_memory_read_packet_size (void)
{
+ struct remote_state *rs = get_remote_state ();
long size = get_memory_packet_size (&memory_read_packet_config);
/* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
extra buffer size argument before the memory read size can be
- increased beyond PBUFSIZ. */
- if (size > PBUFSIZ)
- size = PBUFSIZ;
+ increased beyond (rs->remote_packet_size). */
+ if (size > (rs->remote_packet_size))
+ size = (rs->remote_packet_size);
return size;
}
-/* Register packet size initialization. Since the bounds change when
- the architecture changes (namely REGISTER_BYTES) this all needs to
- be multi-arched. */
-
-static void
-register_remote_packet_sizes (void)
-{
- REGISTER_GDBARCH_SWAP (remote_packet_size);
- REGISTER_GDBARCH_SWAP (actual_register_packet_size);
-}
-
-static void
-build_remote_packet_sizes (void)
-{
- /* Default maximum number of characters in a packet body. Many
- remote stubs have a hardwired buffer size of 400 bytes
- (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
- as the maximum packet-size to ensure that the packet and an extra
- NUL character can always fit in the buffer. This stops GDB
- trashing stubs that try to squeeze an extra NUL into what is
- already a full buffer (As of 1999-12-04 that was most stubs. */
- remote_packet_size = 400 - 1;
- /* Should REGISTER_BYTES needs more space than the default, adjust
- the size accordingly. Remember that each byte is encoded as two
- characters. 32 is the overhead for the packet header /
- footer. NOTE: cagney/1999-10-26: I suspect that 8
- (``$NN:G...#NN'') is a better guess, the below has been padded a
- little. */
- if (REGISTER_BYTES > ((remote_packet_size - 32) / 2))
- remote_packet_size = (REGISTER_BYTES * 2 + 32);
-
- /* This one is filled in when a ``g'' packet is received. */
- actual_register_packet_size = 0;
-}
\f
/* Generic configuration support for packets the stub optionally
supports. Allows the user to specify the use of the packet as well
set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure,
&config->detect, set_doc,
set_remote_list);
- set_cmd->function.sfunc = set_func;
+ set_cmd_sfunc (set_cmd, set_func);
show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc,
show_remote_list);
/* set/show remote NAME-packet {auto,on,off} -- legacy */
if (!in_thread_list (pid_to_ptid (currthread)))
{
add_thread (pid_to_ptid (currthread));
-#ifdef UI_OUT
ui_out_text (uiout, "[New ");
ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread)));
ui_out_text (uiout, "]\n");
-#else
- printf_filtered ("[New %s]\n",
- target_pid_to_str (pid_to_ptid (currthread)));
-#endif
}
}
static void
set_thread (int th, int gen)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
int state = gen ? general_thread : continue_thread;
if (state == th)
else
sprintf (&buf[2], "%x", th);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (gen)
general_thread = th;
else
remote_unpack_thread_info_response (char *pkt, threadref *expectedref,
struct gdb_ext_thread_info *info)
{
+ struct remote_state *rs = get_remote_state ();
int mask, length;
unsigned int tag;
threadref ref;
- char *limit = pkt + PBUFSIZ; /* plausable parsing limit */
+ char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */
int retval = 1;
/* info->threadid = 0; FIXME: implement zero_threadref */
remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */
struct gdb_ext_thread_info *info)
{
+ struct remote_state *rs = get_remote_state ();
int result;
- char *threadinfo_pkt = alloca (PBUFSIZ);
+ char *threadinfo_pkt = alloca (rs->remote_packet_size);
pack_threadinfo_request (threadinfo_pkt, fieldset, threadid);
putpkt (threadinfo_pkt);
- getpkt (threadinfo_pkt, PBUFSIZ, 0);
+ getpkt (threadinfo_pkt, (rs->remote_packet_size), 0);
result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid,
info);
return result;
threadref *original_echo, threadref *resultlist,
int *doneflag)
{
+ struct remote_state *rs = get_remote_state ();
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 */
+ limit = pkt + ((rs->remote_packet_size) - 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. */
remote_get_threadlist (int startflag, threadref *nextthread, int result_limit,
int *done, int *result_count, threadref *threadlist)
{
+ struct remote_state *rs = get_remote_state ();
static threadref echo_nextthread;
- char *threadlist_packet = alloca (PBUFSIZ);
- char *t_response = alloca (PBUFSIZ);
+ char *threadlist_packet = alloca (rs->remote_packet_size);
+ char *t_response = alloca (rs->remote_packet_size);
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;
+ if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size))
+ result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2;
pack_threadlist_request (threadlist_packet,
startflag, result_limit, nextthread);
putpkt (threadlist_packet);
- getpkt (t_response, PBUFSIZ, 0);
+ getpkt (t_response, (rs->remote_packet_size), 0);
*result_count =
parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread,
static ptid_t
remote_current_thread (ptid_t oldpid)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
putpkt ("qC");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == 'Q' && buf[1] == 'C')
return pid_to_ptid (strtol (&buf[2], NULL, 16));
else
static void
remote_threads_info (void)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
char *bufp;
int tid;
{
putpkt ("qfThreadInfo");
bufp = buf;
- getpkt (bufp, PBUFSIZ, 0);
+ getpkt (bufp, (rs->remote_packet_size), 0);
if (bufp[0] != '\0') /* q packet recognized */
{
while (*bufp++ == 'm') /* reply contains one or more TID */
while (*bufp++ == ','); /* comma-separated list */
putpkt ("qsThreadInfo");
bufp = buf;
- getpkt (bufp, PBUFSIZ, 0);
+ getpkt (bufp, (rs->remote_packet_size), 0);
}
return; /* done */
}
static char *
remote_threads_extra_info (struct thread_info *tp)
{
+ struct remote_state *rs = get_remote_state ();
int result;
int set;
threadref id;
struct gdb_ext_thread_info threadinfo;
static char display_buf[100]; /* arbitrary... */
- char *bufp = alloca (PBUFSIZ);
+ char *bufp = alloca (rs->remote_packet_size);
int n = 0; /* position in display_buf */
if (remote_desc == 0) /* paranoia */
{
sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid));
putpkt (bufp);
- getpkt (bufp, PBUFSIZ, 0);
+ getpkt (bufp, (rs->remote_packet_size), 0);
if (bufp[0] != 0)
{
n = min (strlen (bufp) / 2, sizeof (display_buf));
static void
extended_remote_restart (void)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
/* Send the restart command; for reasons I don't understand the
remote side really expects a number after the "R". */
/* Now query for status so this looks just like we restarted
gdbserver from scratch. */
putpkt ("?");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
}
\f
/* Clean up connection to a remote debugger. */
static void
get_offsets (void)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
char *ptr;
int lose;
CORE_ADDR text_addr, data_addr, bss_addr;
putpkt ("qOffsets");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == '\000')
return; /* Return silently. Stub doesn't support
static void
remote_check_symbols (struct objfile *objfile)
{
+ struct remote_state *rs = get_remote_state ();
char *msg, *reply, *tmp;
struct minimal_symbol *sym;
int end;
if (remote_protocol_qSymbol.support == PACKET_DISABLE)
return;
- msg = alloca (PBUFSIZ);
- reply = alloca (PBUFSIZ);
+ msg = alloca (rs->remote_packet_size);
+ reply = alloca (rs->remote_packet_size);
/* Invite target to request symbol lookups. */
putpkt ("qSymbol::");
- getpkt (reply, PBUFSIZ, 0);
+ getpkt (reply, (rs->remote_packet_size), 0);
packet_ok (reply, &remote_protocol_qSymbol);
while (strncmp (reply, "qSymbol:", 8) == 0)
paddr_nz (SYMBOL_VALUE_ADDRESS (sym)),
&reply[8]);
putpkt (msg);
- getpkt (reply, PBUFSIZ, 0);
+ getpkt (reply, (rs->remote_packet_size), 0);
}
}
remote_open_1 (char *name, int from_tty, struct target_ops *target,
int extended_p)
{
+ struct remote_state *rs = get_remote_state ();
if (name == 0)
- error ("To open a remote debug connection, you need to specify what\n\
-serial device is attached to the remote system\n\
-(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
+ error ("To open a remote debug connection, you need to specify what\n"
+ "serial device is attached to the remote system\n"
+ "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
/* See FIXME above */
wait_forever_enabled_p = 1;
if (extended_p)
{
/* Tell the remote that we are using the extended protocol. */
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
putpkt ("!");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
}
#ifdef SOLIB_CREATE_INFERIOR_HOOK
/* FIXME: need a master target_open vector from which all
remote_async_open_1 (char *name, int from_tty, struct target_ops *target,
int extended_p)
{
+ struct remote_state *rs = get_remote_state ();
if (name == 0)
- error ("To open a remote debug connection, you need to specify what\n\
-serial device is attached to the remote system\n\
-(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
+ error ("To open a remote debug connection, you need to specify what\n"
+ "serial device is attached to the remote system\n"
+ "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
target_preopen (from_tty);
if (extended_p)
{
/* Tell the remote that we are using the extended protocol. */
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
putpkt ("!");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
}
#ifdef SOLIB_CREATE_INFERIOR_HOOK
/* FIXME: need a master target_open vector from which all
static void
remote_detach (char *args, int from_tty)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
if (args)
error ("Argument given to \"detach\" when remotely debugging.");
/* Tell the remote target to detach. */
strcpy (buf, "D");
- remote_send (buf, PBUFSIZ);
+ remote_send (buf, (rs->remote_packet_size));
target_mourn_inferior ();
if (from_tty)
static void
remote_async_detach (char *args, int from_tty)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
if (args)
error ("Argument given to \"detach\" when remotely debugging.");
/* Tell the remote target to detach. */
strcpy (buf, "D");
- remote_send (buf, PBUFSIZ);
+ remote_send (buf, (rs->remote_packet_size));
/* Unregister the file descriptor from the event loop. */
if (target_is_async_p ())
static void
remote_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
int pid = PIDGET (ptid);
char *p;
*p++ = 0;
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (packet_ok (buf, &remote_protocol_E) == PACKET_OK)
return;
*p++ = 0;
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (packet_ok (buf, &remote_protocol_e) == PACKET_OK)
return;
static void
remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
int pid = PIDGET (ptid);
char *p;
*p++ = 0;
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (packet_ok (buf, &remote_protocol_E) == PACKET_OK)
goto register_event_loop;
*p++ = 0;
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (packet_ok (buf, &remote_protocol_e) == PACKET_OK)
goto register_event_loop;
Give up (and stop debugging it)? "))
{
target_mourn_inferior ();
- return_to_top_level (RETURN_QUIT);
+ throw_exception (RETURN_QUIT);
}
target_terminal_inferior ();
static ptid_t
remote_wait (ptid_t ptid, struct target_waitstatus *status)
{
- unsigned char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ unsigned char *buf = alloca (rs->remote_packet_size);
int thread_num = -1;
status->kind = TARGET_WAITKIND_EXITED;
unsigned char *p;
ofunc = signal (SIGINT, remote_interrupt);
- getpkt (buf, PBUFSIZ, 1);
+ getpkt (buf, (rs->remote_packet_size), 1);
signal (SIGINT, ofunc);
/* This is a hook for when we need to do something (perhaps the
case 'T': /* Status with PC, SP, FP, ... */
{
int i;
- long regno;
char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE);
/* Expedited reply, containing Signal, {regno, reg} repeat */
char *p_temp;
int fieldsize;
- /* Read the register number */
- regno = strtol ((const char *) p, &p_temp, 16);
+ /* Read the ``P'' register number. */
+ LONGEST pnum = strtol ((const char *) p, &p_temp, 16);
p1 = (unsigned char *) p_temp;
if (p1 == p) /* No register number present here */
}
else
{
+ struct packet_reg *reg = packet_reg_from_pnum (rs, pnum);
p = p1;
if (*p++ != ':')
Packet: '%s'\n",
p, buf);
- if (regno >= NUM_REGS)
- warning ("Remote sent bad register number %ld: %s\n\
+ if (reg == NULL)
+ warning ("Remote sent bad register number %s: %s\n\
Packet: '%s'\n",
- regno, p, buf);
+ phex_nz (pnum, 0), p, buf);
- fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno));
+ fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum));
p += 2 * fieldsize;
- if (fieldsize < REGISTER_RAW_SIZE (regno))
+ if (fieldsize < REGISTER_RAW_SIZE (reg->regnum))
warning ("Remote reply is too short: %s", buf);
- supply_register (regno, regs);
+ supply_register (reg->regnum, regs);
}
if (*p++ != ';')
static ptid_t
remote_async_wait (ptid_t ptid, struct target_waitstatus *status)
{
- unsigned char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ unsigned char *buf = alloca (rs->remote_packet_size);
int thread_num = -1;
status->kind = TARGET_WAITKIND_EXITED;
_never_ wait for ever -> test on target_is_async_p().
However, before we do that we need to ensure that the caller
knows how to take the target into/out of async mode. */
- getpkt (buf, PBUFSIZ, wait_forever_enabled_p);
+ getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p);
if (!target_is_async_p ())
signal (SIGINT, ofunc);
case 'T': /* Status with PC, SP, FP, ... */
{
int i;
- long regno;
char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE);
/* Expedited reply, containing Signal, {regno, reg} repeat */
int fieldsize;
/* Read the register number */
- regno = strtol ((const char *) p, &p_temp, 16);
+ long pnum = strtol ((const char *) p, &p_temp, 16);
p1 = (unsigned char *) p_temp;
if (p1 == p) /* No register number present here */
}
else
{
+ struct packet_reg *reg = packet_reg_from_pnum (rs, pnum);
p = p1;
-
if (*p++ != ':')
warning ("Malformed packet(b) (missing colon): %s\n\
Packet: '%s'\n",
p, buf);
- if (regno >= NUM_REGS)
+ if (reg == NULL)
warning ("Remote sent bad register number %ld: %s\n\
Packet: '%s'\n",
- regno, p, buf);
+ pnum, p, buf);
- fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno));
+ fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum));
p += 2 * fieldsize;
- if (fieldsize < REGISTER_RAW_SIZE (regno))
+ if (fieldsize < REGISTER_RAW_SIZE (reg->regnum))
warning ("Remote reply is too short: %s", buf);
- supply_register (regno, regs);
+ supply_register (reg->regnum, regs);
}
if (*p++ != ';')
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. */
+/* Currently we just read all the registers, so we don't use regnum. */
/* ARGSUSED */
static void
-remote_fetch_registers (int regno)
+remote_fetch_registers (int regnum)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
int i;
char *p;
- char *regs = alloca (REGISTER_BYTES);
+ char *regs = alloca (rs->sizeof_g_packet);
set_thread (PIDGET (inferior_ptid), 1);
+ if (regnum >= 0)
+ {
+ struct packet_reg *reg = packet_reg_from_regnum (rs, regnum);
+ gdb_assert (reg != NULL);
+ if (!reg->in_g_packet)
+ internal_error (__FILE__, __LINE__,
+ "Attempt to fetch a non G-packet register when this "
+ "remote.c does not support the p-packet.");
+ }
+
sprintf (buf, "g");
- remote_send (buf, PBUFSIZ);
+ remote_send (buf, (rs->remote_packet_size));
/* Save the size of the packet sent to us by the target. Its used
as a heuristic when determining the max size of packets that the
target can safely receive. */
- if (actual_register_packet_size == 0)
- actual_register_packet_size = strlen (buf);
+ if ((rs->actual_register_packet_size) == 0)
+ (rs->actual_register_packet_size) = strlen (buf);
/* Unimplemented registers read as all bits zero. */
- memset (regs, 0, REGISTER_BYTES);
+ memset (regs, 0, rs->sizeof_g_packet);
/* 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
if (remote_debug)
fprintf_unfiltered (gdb_stdlog,
"Bad register packet; fetching a new packet\n");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
}
/* Reply describes registers byte by byte, each byte encoded as two
register cacheing/storage mechanism. */
p = buf;
- for (i = 0; i < REGISTER_BYTES; i++)
+ for (i = 0; i < rs->sizeof_g_packet; i++)
{
if (p[0] == 0)
break;
warning ("Remote reply is too short: %s", buf);
}
-supply_them:
- for (i = 0; i < NUM_REGS; i++)
- {
- supply_register (i, ®s[REGISTER_BYTE (i)]);
- if (buf[REGISTER_BYTE (i) * 2] == 'x')
- set_register_cached (i, -1);
- }
+ supply_them:
+ {
+ int i;
+ for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
+ {
+ struct packet_reg *r = &rs->regs[i];
+ if (r->in_g_packet)
+ {
+ supply_register (r->regnum, regs + r->offset);
+ if (buf[r->offset * 2] == 'x')
+ set_register_cached (i, -1);
+ }
+ }
+ }
}
/* Prepare to store registers. Since we may send them all (using a
{
case PACKET_DISABLE:
case PACKET_SUPPORT_UNKNOWN:
- read_register_bytes (0, (char *) NULL, REGISTER_BYTES);
+ /* NOTE: This isn't rs->sizeof_g_packet because here, we are
+ forcing the register cache to read its and not the target
+ registers. */
+ read_register_bytes (0, (char *) NULL, REGISTER_BYTES); /* OK use. */
break;
case PACKET_ENABLE:
break;
}
}
-/* Helper: Attempt to store REGNO using the P packet. Return fail IFF
+/* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
packet was not recognized. */
static int
-store_register_using_P (int regno)
+store_register_using_P (int regnum)
{
+ struct remote_state *rs = get_remote_state ();
+ struct packet_reg *reg = packet_reg_from_regnum (rs, regnum);
/* Try storing a single register. */
- char *buf = alloca (PBUFSIZ);
- char *regp;
+ char *buf = alloca (rs->remote_packet_size);
+ char *regp = alloca (MAX_REGISTER_RAW_SIZE);
char *p;
int i;
- sprintf (buf, "P%x=", regno);
+ sprintf (buf, "P%s=", phex_nz (reg->pnum, 0));
p = buf + strlen (buf);
- regp = register_buffer (regno);
- bin2hex (regp, p, REGISTER_RAW_SIZE (regno));
- remote_send (buf, PBUFSIZ);
+ regcache_collect (reg->regnum, regp);
+ bin2hex (regp, p, REGISTER_RAW_SIZE (reg->regnum));
+ remote_send (buf, rs->remote_packet_size);
return buf[0] != '\0';
}
-/* Store register REGNO, or all registers if REGNO == -1, from the contents
+/* Store register REGNUM, or all registers if REGNUM == -1, from the contents
of the register cache buffer. FIXME: ignores errors. */
static void
-remote_store_registers (int regno)
+remote_store_registers (int regnum)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf;
+ char *regs;
int i;
char *p;
- char *regs;
set_thread (PIDGET (inferior_ptid), 1);
- if (regno >= 0)
+ if (regnum >= 0)
{
switch (remote_protocol_P.support)
{
case PACKET_DISABLE:
break;
case PACKET_ENABLE:
- if (store_register_using_P (regno))
+ if (store_register_using_P (regnum))
return;
else
error ("Protocol error: P packet not recognized by stub");
case PACKET_SUPPORT_UNKNOWN:
- if (store_register_using_P (regno))
+ if (store_register_using_P (regnum))
{
/* The stub recognized the 'P' packet. Remember this. */
remote_protocol_P.support = PACKET_ENABLE;
}
}
- buf[0] = 'G';
+ /* Extract all the registers in the regcache copying them into a
+ local buffer. */
+ {
+ int i;
+ regs = alloca (rs->sizeof_g_packet);
+ memset (regs, rs->sizeof_g_packet, 0);
+ for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
+ {
+ struct packet_reg *r = &rs->regs[i];
+ if (r->in_g_packet)
+ regcache_collect (r->regnum, regs + r->offset);
+ }
+ }
/* Command describes registers byte by byte,
each byte encoded as two hex characters. */
-
- regs = register_buffer (-1);
- p = buf + 1;
+ buf = alloca (rs->remote_packet_size);
+ p = buf;
+ *p++ = 'G';
/* remote_prepare_to_store insures that register_bytes_found gets set. */
bin2hex (regs, p, register_bytes_found);
- remote_send (buf, PBUFSIZ);
+ remote_send (buf, (rs->remote_packet_size));
}
\f
static void
check_binary_download (CORE_ADDR addr)
{
+ struct remote_state *rs = get_remote_state ();
switch (remote_protocol_binary_download.support)
{
case PACKET_DISABLE:
break;
case PACKET_SUPPORT_UNKNOWN:
{
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
char *p;
p = buf;
*p = '\0';
putpkt_binary (buf, (int) (p - buf));
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == '\0')
{
/* ARGSUSED */
static int
remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len,
- int should_write,
- struct mem_attrib *attrib ATTRIBUTE_UNUSED,
+ int should_write, struct mem_attrib *attrib,
struct target_ops *target)
{
CORE_ADDR targ_addr;
long mask_long, data_long;
long data_found_long;
CORE_ADDR addr_we_found;
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
long returned_long[2];
char *p;
data_long = extract_unsigned_integer (data, len);
sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == '\0')
{
/* The stub doesn't support the 't' request. We might want to
}
/* 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
+ of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 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 (char *buf, int cnt)
{
+ struct remote_state *rs = get_remote_state ();
int i;
unsigned char csum = 0;
char *buf2 = alloca (cnt + 6);
- long sizeof_junkbuf = PBUFSIZ;
+ long sizeof_junkbuf = (rs->remote_packet_size);
char *junkbuf = alloca (sizeof_junkbuf);
int ch;
static int
remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
{
+ struct remote_state *rs = get_remote_state ();
#ifdef REMOTE_BREAKPOINT
int val;
#endif
if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE)
{
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
char *p = buf;
addr = remote_address_masked (addr);
sprintf (p, ",%d", bp_size);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP]))
{
if (val == 0)
{
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
val = target_write_memory (addr, (char *) big_break_insn,
sizeof big_break_insn);
else
static int
remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
{
+ struct remote_state *rs = get_remote_state ();
int bp_size;
if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE)
{
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
char *p = buf;
*(p++) = 'z';
sprintf (p, ",%d", bp_size);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
return (buf[0] == 'E');
}
int
remote_insert_watchpoint (CORE_ADDR addr, int len, int type)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
char *p;
enum Z_packet_type packet = watchpoint_to_Z_packet (type);
sprintf (p, ",%x", len);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
switch (packet_ok (buf, &remote_protocol_Z[packet]))
{
int
remote_remove_watchpoint (CORE_ADDR addr, int len, int type)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
char *p;
enum Z_packet_type packet = watchpoint_to_Z_packet (type);
p += hexnumstr (p, (ULONGEST) addr);
sprintf (p, ",%x", len);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
switch (packet_ok (buf, &remote_protocol_Z[packet]))
{
int
remote_insert_hw_breakpoint (CORE_ADDR addr, int len)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
char *p = buf;
if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE)
sprintf (p, ",%x", len);
putpkt (buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP]))
{
int
remote_remove_hw_breakpoint (CORE_ADDR addr, int len)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
char *p = buf;
if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE)
sprintf (p, ",%x", len);
putpkt(buf);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP]))
{
static void
compare_sections_command (char *args, int from_tty)
{
+ struct remote_state *rs = get_remote_state ();
asection *s;
unsigned long host_crc, target_crc;
extern bfd *exec_bfd;
char *tmp;
char *sectdata;
const char *sectname;
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
bfd_size_type size;
bfd_vma lma;
int matched = 0;
bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == 'E')
- error ("target memory fault, section %s, range 0x%08x -- 0x%08x",
- sectname, lma, lma + size);
+ error ("target memory fault, section %s, range 0x%s -- 0x%s",
+ sectname, paddr (lma), paddr (lma + size));
if (buf[0] != 'C')
error ("remote target does not support this operation");
static int
remote_query (int query_type, char *buf, char *outbuf, int *bufsiz)
{
+ struct remote_state *rs = get_remote_state ();
int i;
- char *buf2 = alloca (PBUFSIZ);
+ char *buf2 = alloca (rs->remote_packet_size);
char *p2 = &buf2[0];
if (!bufsiz)
error ("null pointer to remote bufer size specified");
- /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let
+ /* minimum outbuf size is (rs->remote_packet_size) - 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)
+ if (*bufsiz < (rs->remote_packet_size))
{
- *bufsiz = PBUFSIZ;
+ *bufsiz = (rs->remote_packet_size);
return -1;
}
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)))
+ while (buf[i] && (i < ((rs->remote_packet_size) - 8)))
{
/* bad caller may have sent forbidden characters */
if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#'))
remote_rcmd (char *command,
struct ui_file *outbuf)
{
+ struct remote_state *rs = get_remote_state ();
int i;
- char *buf = alloca (PBUFSIZ);
+ char *buf = alloca (rs->remote_packet_size);
char *p = buf;
if (!remote_desc)
strcpy (buf, "qRcmd,");
p = strchr (buf, '\0');
- if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ)
+ if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size))
error ("\"monitor\" command ``%s'' is too long\n", command);
/* Encode the actual command */
{
/* XXX - see also tracepoint.c:remote_get_noisy_reply() */
buf[0] = '\0';
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == '\0')
error ("Target does not support this command\n");
if (buf[0] == 'O' && buf[1] != 'K')
static void
packet_command (char *args, int from_tty)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
if (!remote_desc)
error ("command can only be used with remote target");
puts_filtered ("\n");
putpkt (args);
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
puts_filtered ("received: ");
print_packet (buf);
puts_filtered ("\n");
static void
remote_info_process (char *args, int from_tty)
{
- char *buf = alloca (PBUFSIZ);
+ struct remote_state *rs = get_remote_state ();
+ char *buf = alloca (rs->remote_packet_size);
if (remote_desc == 0)
error ("Command can only be used when connected to the remote target.");
putpkt ("qfProcessInfo");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
if (buf[0] == 0)
return; /* Silently: target does not support this feature. */
{
remote_console_output (&buf[1]);
putpkt ("qsProcessInfo");
- getpkt (buf, PBUFSIZ, 0);
+ getpkt (buf, (rs->remote_packet_size), 0);
}
}
remote_cisco_open (char *name, int from_tty)
{
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).");
+ error ("To open a remote debug connection, you need to specify what \n"
+ "device is attached to the remote system (e.g. host:port).");
/* See FIXME above */
wait_forever_enabled_p = 1;
}
minitelnet_return;
-/* shared between readsocket() and readtty() */
-static char *tty_input;
+/* Shared between readsocket() and readtty(). The size is arbitrary,
+ however all targets are known to support a 400 character packet. */
+static char tty_input[400];
static int escape_count;
static int echo_check;
{
if (tty_input[echo_check] == data)
{
+ gdb_assert (echo_check <= sizeof (tty_input));
echo_check++; /* Character matched user input: */
continue; /* Continue without echoing it. */
}
if (query ("Interrupt GDB? "))
{
printf_filtered ("Interrupted by user.\n");
- return_to_top_level (RETURN_QUIT);
+ throw_exception (RETURN_QUIT);
}
quit_count = 0;
}
static void
build_remote_gdbarch_data (void)
{
- build_remote_packet_sizes ();
-
- /* Cisco stuff */
- tty_input = xmalloc (PBUFSIZ);
remote_address_size = TARGET_ADDR_BIT;
}
struct cmd_list_element *tmpcmd;
/* architecture specific data */
- build_remote_gdbarch_data ();
- register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL);
- register_remote_packet_sizes ();
+ remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state,
+ free_remote_state);
+
+ /* Old tacky stuff. NOTE: This comes after the remote protocol so
+ that the remote protocol has been initialized. */
register_gdbarch_swap (&remote_address_size,
sizeof (&remote_address_size), NULL);
register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data);
show_remote_protocol_e_packet_cmd,
&remote_set_cmdlist, &remote_show_cmdlist,
0);
+ /* Disable by default. The ``e'' packet has nasty interactions with
+ the threading code - it relies on global state. */
+ remote_protocol_e.detect = CMD_AUTO_BOOLEAN_FALSE;
+ update_packet_config (&remote_protocol_e);
add_packet_config_cmd (&remote_protocol_E,
"E", "step-over-range-w-signal",
show_remote_protocol_E_packet_cmd,
&remote_set_cmdlist, &remote_show_cmdlist,
0);
+ /* Disable by default. The ``e'' packet has nasty interactions with
+ the threading code - it relies on global state. */
+ remote_protocol_E.detect = CMD_AUTO_BOOLEAN_FALSE;
+ update_packet_config (&remote_protocol_E);
add_packet_config_cmd (&remote_protocol_P,
"P", "set-register",
&remote_Z_packet_detect,
"\
Set use of remote protocol `Z' packets", &remote_set_cmdlist);
- tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd;
+ set_cmd_sfunc (tmpcmd, set_remote_protocol_Z_packet_cmd);
add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd,
"Show use of remote protocol `Z' packets ",
&remote_show_cmdlist);
projects / deliverable / binutils-gdb.git / blobdiff