AA = signal number
n... = register number
r... = register contents
+ or... WAA The process extited, and AA is
+ the exit status. This is only
+ applicable for certains sorts of
+ targets.
+ or... NAATT;DD;BB Relocate the object file.
+ AA = signal number
+ TT = text address
+ DD = data address
+ BB = bss address
+ This is used by the NLM stub,
+ which is why it only has three
+ addresses rather than one per
+ section: the NLM stub always
+ sees only three sections, even
+ though gdb may see more.
kill request k
#include "wait.h"
#include "terminal.h"
#include "gdbcmd.h"
+#include "objfiles.h"
+#include "gdb-stabs.h"
#include "dcache.h"
+#include "remote-utils.h"
#if !defined(DONT_USE_REMOTE)
#ifdef USG
remote_start_remote (dummy)
char *dummy;
{
+ immediate_quit = 1; /* Allow user to interrupt it */
+
/* Ack any packet which the remote side has already sent. */
/* I'm not sure this \r is needed; we don't use it any other time we
send an ack. */
SERIAL_WRITE (remote_desc, "+\r", 2);
putpkt ("?"); /* initiate a query from remote machine */
+ immediate_quit = 0;
start_remote (); /* Initialize gdb process mechanisms */
return 1;
if (!remote_desc)
perror_with_name (name);
- if (baud_rate)
+ if (SERIAL_SETBAUDRATE (remote_desc, sr_get_baud_rate()))
{
- int rate;
-
- if (sscanf (baud_rate, "%d", &rate) == 1)
- if (SERIAL_SETBAUDRATE (remote_desc, rate))
- {
- SERIAL_CLOSE (remote_desc);
- perror_with_name (name);
- }
+ SERIAL_CLOSE (remote_desc);
+ perror_with_name (name);
}
SERIAL_RAW (remote_desc);
+ /* If there is something sitting in the buffer we might take it as a
+ response to a command, which would be bad. */
+ SERIAL_FLUSH_INPUT (remote_desc);
+
if (from_tty)
{
puts_filtered ("Remote debugging using ");
}
push_target (&remote_ops); /* Switch to using remote target now */
- /* Start the remote connection; if error (0), discard this target. */
- immediate_quit++; /* Allow user to interrupt it */
+ /* 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 this doesn't work, try more severe steps. */
signal (signo, remote_interrupt_twice);
- if (remote_debug)
+ if (sr_get_debug ())
printf ("remote_interrupt called\n");
SERIAL_WRITE (remote_desc, "\003", 1); /* Send a ^C */
WAITTYPE *status;
{
unsigned char buf[PBUFSIZ];
- unsigned char *p;
- int i;
- long regno;
- char regs[MAX_REGISTER_RAW_SIZE];
WSETEXIT ((*status), 0);
- ofunc = (void (*)()) signal (SIGINT, remote_interrupt);
- getpkt ((char *) buf, 1);
- signal (SIGINT, ofunc);
-
- if (buf[0] == 'E')
- error ("Remote failure reply: %s", buf);
- if (buf[0] == 'T')
+ while (1)
{
- /* Expedited reply, containing Signal, {regno, reg} repeat */
- /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
- ss = signal number
- n... = register number
- r... = register contents
- */
+ unsigned char *p;
- p = &buf[3]; /* after Txx */
+ ofunc = (void (*)()) signal (SIGINT, remote_interrupt);
+ getpkt ((char *) buf, 1);
+ signal (SIGINT, ofunc);
- while (*p)
+ if (buf[0] == 'E')
+ warning ("Remote failure reply: %s", buf);
+ else if (buf[0] == 'T')
{
- unsigned char *p1;
+ int i;
+ long regno;
+ char regs[MAX_REGISTER_RAW_SIZE];
- regno = strtol (p, &p1, 16); /* Read the register number */
+ /* Expedited reply, containing Signal, {regno, reg} repeat */
+ /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
+ ss = signal number
+ n... = register number
+ r... = register contents
+ */
- if (p1 == p)
- error ("Remote sent badly formed register number: %s\nPacket: '%s'\n",
- p1, buf);
+ p = &buf[3]; /* after Txx */
- p = p1;
+ while (*p)
+ {
+ unsigned char *p1;
- if (*p++ != ':')
- error ("Malformed packet (missing colon): %s\nPacket: '%s'\n",
- p, buf);
+ regno = strtol (p, &p1, 16); /* Read the register number */
- if (regno >= NUM_REGS)
- error ("Remote sent bad register number %d: %s\nPacket: '%s'\n",
- regno, p, buf);
+ if (p1 == p)
+ warning ("Remote sent badly formed register number: %s\nPacket: '%s'\n",
+ p1, buf);
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i++)
- {
- if (p[0] == 0 || p[1] == 0)
- error ("Remote reply is too short: %s", buf);
- regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
- p += 2;
- }
+ p = p1;
+
+ if (*p++ != ':')
+ warning ("Malformed packet (missing colon): %s\nPacket: '%s'\n",
+ p, buf);
+
+ if (regno >= NUM_REGS)
+ warning ("Remote sent bad register number %d: %s\nPacket: '%s'\n",
+ regno, p, buf);
+
+ for (i = 0; i < REGISTER_RAW_SIZE (regno); i++)
+ {
+ if (p[0] == 0 || p[1] == 0)
+ warning ("Remote reply is too short: %s", buf);
+ regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
+ p += 2;
+ }
+
+ if (*p++ != ';')
+ warning ("Remote register badly formatted: %s", buf);
- if (*p++ != ';')
- error("Remote register badly formatted: %s", buf);
+ supply_register (regno, regs);
+ }
+ break;
+ }
+ else if (buf[0] == 'N')
+ {
+ unsigned char *p1;
+ bfd_vma text_addr, data_addr, bss_addr;
+
+ /* Relocate object file. Format is NAATT;DD;BB where AA is
+ the signal number, TT is the new text address, DD is the
+ new data address, and BB is the new bss address. This is
+ used by the NLM stub; gdb may see more sections. */
+ p = &buf[3];
+ text_addr = strtol (p, &p1, 16);
+ if (p1 == p || *p1 != ';')
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+ p = p1 + 1;
+ data_addr = strtol (p, &p1, 16);
+ if (p1 == p || *p1 != ';')
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+ p = p1 + 1;
+ bss_addr = strtol (p, &p1, 16);
+ if (p1 == p)
+ warning ("Malformed relocation packet: Packet '%s'", buf);
- supply_register (regno, regs);
+ if (symfile_objfile != NULL)
+ {
+ struct section_offsets *offs;
+
+ /* FIXME: This code assumes gdb-stabs.h is being used;
+ it's broken for xcoff, dwarf, sdb-coff, etc. But
+ there is no simple canonical representation for this
+ stuff. (Just what does "text" as seen by the stub
+ mean, anyway?). */
+
+ /* FIXME: Why don't the various symfile_offsets routines
+ in the sym_fns vectors set this?
+ (no good reason -kingdon). */
+ if (symfile_objfile->num_sections == 0)
+ symfile_objfile->num_sections = SECT_OFF_MAX;
+
+ offs = ((struct section_offsets *)
+ alloca (sizeof (struct section_offsets)
+ + (symfile_objfile->num_sections
+ * sizeof (offs->offsets))));
+ memcpy (offs, symfile_objfile->section_offsets,
+ (sizeof (struct section_offsets)
+ + (symfile_objfile->num_sections
+ * sizeof (offs->offsets))));
+ ANOFFSET (offs, SECT_OFF_TEXT) = text_addr;
+ ANOFFSET (offs, SECT_OFF_DATA) = data_addr;
+ ANOFFSET (offs, SECT_OFF_BSS) = bss_addr;
+
+ objfile_relocate (symfile_objfile, offs);
+ }
+ break;
}
+ else if (buf[0] == 'W')
+ {
+ /* The remote process exited. */
+ WSETEXIT (*status, (fromhex (buf[1]) << 4) + fromhex (buf[2]));
+ return 0;
+ }
+ else if (buf[0] == 'S')
+ break;
+ else
+ warning ("Invalid remote reply: %s", buf);
}
- else if (buf[0] != 'S')
- error ("Invalid remote reply: %s", buf);
WSETSTOP ((*status), (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))));
return 0;
}
+/* Number of bytes of registers this stub implements. */
+static int register_bytes_found;
+
/* Read the remote registers into the block REGS. */
/* Currently we just read all the registers, so we don't use regno. */
/* ARGSUSED */
sprintf (buf, "g");
remote_send (buf);
+ /* Unimplemented registers read as all bits zero. */
+ memset (regs, 0, REGISTER_BYTES);
+
/* Reply describes registers byte by byte, each byte encoded as two
hex characters. Suck them all up, then supply them to the
register cacheing/storage mechanism. */
p = buf;
for (i = 0; i < REGISTER_BYTES; i++)
{
- if (p[0] == 0 || p[1] == 0)
- error ("Remote reply is too short: %s", buf);
+ if (p[0] == 0)
+ break;
+ if (p[1] == 0)
+ {
+ warning ("Remote reply is of odd length: %s", buf);
+ /* Don't change register_bytes_found in this case, and don't
+ print a second warning. */
+ goto supply_them;
+ }
regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
p += 2;
}
+
+ if (i != register_bytes_found)
+ {
+ register_bytes_found = i;
+#ifdef REGISTER_BYTES_OK
+ if (!REGISTER_BYTES_OK (i))
+ warning ("Remote reply is too short: %s", buf);
+#endif
+ }
+
+ supply_them:
for (i = 0; i < NUM_REGS; i++)
supply_register (i, ®s[REGISTER_BYTE(i)]);
}
each byte encoded as two hex characters. */
p = buf + 1;
- for (i = 0; i < REGISTER_BYTES; i++)
+ /* remote_prepare_to_store insures that register_bytes_found gets set. */
+ for (i = 0; i < register_bytes_found; i++)
{
*p++ = tohex ((registers[i] >> 4) & 0xf);
*p++ = tohex (registers[i] & 0xf);
remote_send (buf);
}
+#if 0
+
+/* Use of the data cache is disabled because it loses for looking at
+ and changing hardware I/O ports and the like. Accepting `volatile'
+ would perhaps be one way to fix it, but a better way which would
+ win for more cases would be to use the executable file for the text
+ segment, like the `icache' code below but done cleanly (in some
+ target-independent place, perhaps in target_xfer_memory, perhaps
+ based on assigning each target a speed or perhaps by some simpler
+ mechanism). */
+
/* Read a word from remote address ADDR and return it.
This goes through the data cache. */
-int
+static int
remote_fetch_word (addr)
CORE_ADDR addr;
{
/* Write a word WORD into remote address ADDR.
This goes through the data cache. */
-void
+static void
remote_store_word (addr, word)
CORE_ADDR addr;
int word;
{
dcache_poke (remote_dcache, addr, word);
}
-
+#endif /* 0 */
\f
/* Write memory data directly to the remote machine.
This does not inform the data cache; the data cache uses this.
while (1)
{
- if (remote_debug)
+ if (sr_get_debug ())
{
*p = '\0';
printf ("Sending packet: %s...", buf2); fflush(stdout);
switch (ch)
{
case '+':
- if (remote_debug)
+ if (sr_get_debug ())
printf("Ack\n");
return;
case SERIAL_TIMEOUT:
case SERIAL_EOF:
error ("putpkt: EOF while trying to read ACK");
default:
- if (remote_debug)
+ if (sr_get_debug ())
printf ("%02X %c ", ch&0xFF, ch);
continue;
}
if (forever)
continue;
if (++retries >= MAX_RETRIES)
- if (remote_debug) puts_filtered ("Timed out.\n");
+ if (sr_get_debug ()) puts_filtered ("Timed out.\n");
goto out;
}
c = readchar ();
if (c == SERIAL_TIMEOUT)
{
- if (remote_debug)
+ if (sr_get_debug ())
puts_filtered ("Timeout in mid-packet, retrying\n");
goto whole; /* Start a new packet, count retries */
}
if (c == '$')
{
- if (remote_debug)
+ if (sr_get_debug ())
puts_filtered ("Saw new packet start in middle of old one\n");
goto whole; /* Start a new packet, count retries */
}
SERIAL_WRITE (remote_desc, "+", 1);
- if (remote_debug)
+ if (sr_get_debug ())
fprintf (stderr,"Packet received: %s\n", buf);
}
\f
projects / deliverable / binutils-gdb.git / blobdiff