/* 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, 2003, 2004
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcore.h" /* for exec_bfd */
+#include "remote-fileio.h"
+
/* Prototypes for local functions */
static void cleanup_sigint_signal_handler (void *dummy);
static void initialize_sigint_signal_handler (void);
static void build_remote_gdbarch_data (void);
-static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len);
-
-static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len);
-
static void remote_files_info (struct target_ops *ignore);
static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr,
enum target_signal siggnal);
static void remote_async_resume (ptid_t ptid, int step,
enum target_signal siggnal);
-static int remote_start_remote (PTR);
+static int remote_start_remote (struct ui_out *uiout, void *dummy);
static void remote_open (char *name, int from_tty);
static void remote_async_open (char *name, int from_tty);
static void extended_remote_open (char *name, int from_tty);
static void extended_remote_async_open (char *name, int from_tty);
-static void remote_open_1 (char *, int, struct target_ops *, int extended_p);
-static void remote_async_open_1 (char *, int, struct target_ops *,
- int extended_p);
+static void remote_open_1 (char *, int, struct target_ops *, int extended_p,
+ int async_p);
static void remote_close (int quitting);
static int tohex (int nib);
static void remote_detach (char *args, int from_tty);
-static void remote_async_detach (char *args, int from_tty);
static void remote_interrupt (int signo);
static void init_extended_remote_ops (void);
-static void init_remote_cisco_ops (void);
-
-static struct target_ops remote_cisco_ops;
-
static void remote_stop (void);
static int ishex (int ch, int *val);
static int stubhex (int ch);
-static int remote_query (int /*char */ , char *, char *, int *);
-
static int hexnumstr (char *, ULONGEST);
static int hexnumnstr (char *, ULONGEST, int);
static void update_packet_config (struct packet_config *config);
-/* Define the target subroutine names */
-
-void open_remote_target (char *, int, struct target_ops *, int);
-
void _initialize_remote (void);
-/* Description of the remote protocol. Strictly speeking, when the
+/* Description of the remote protocol. Strictly speaking, 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
+ Unfortunately, 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; == DEPRECATED_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
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 ()
+get_remote_state (void)
{
- return gdbarch_data (remote_gdbarch_data_handle);
+ return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle);
}
static void *
init_remote_state (struct gdbarch *gdbarch)
{
int regnum;
- struct remote_state *rs = xmalloc (sizeof (struct remote_state));
+ struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state);
+
+ if (DEPRECATED_REGISTER_BYTES != 0)
+ rs->sizeof_g_packet = DEPRECATED_REGISTER_BYTES;
+ else
+ rs->sizeof_g_packet = 0;
+
+ /* Assume a 1:1 regnum<->pnum table. */
+ rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS,
+ 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 = DEPRECATED_REGISTER_BYTE (regnum);
+ r->in_g_packet = (regnum < NUM_REGS);
+ /* ...name = REGISTER_NAME (regnum); */
+
+ /* Compute packet size by accumulating the size of all registers. */
+ if (DEPRECATED_REGISTER_BYTES == 0)
+ rs->sizeof_g_packet += register_size (current_gdbarch, regnum);
+ }
/* Default maximum number of characters in a packet body. Many
remote stubs have a hardwired buffer size of 400 bytes
already a full buffer (As of 1999-12-04 that was most stubs. */
rs->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
+ /* 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 (REGISTER_BYTES > ((rs->remote_packet_size - 32) / 2))
- rs->remote_packet_size = (REGISTER_BYTES * 2 + 32);
-
+ 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)
+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)
{
- struct remote_state *state = pointer;
- xfree (state);
+ 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;
}
-/* */
+/* FIXME: graces/2002-08-08: These variables should eventually be
+ bound to an instance of the target object (as in gdbarch-tdep()),
+ when such a thing exists. */
+
+/* This is set to the data address of the access causing the target
+ to stop for a watchpoint. */
+static CORE_ADDR remote_watch_data_address;
+
+/* This is non-zero if taregt stopped for a watchpoint. */
+static int remote_stopped_by_watchpoint_p;
+
static struct target_ops remote_ops;
starts. */
static struct serial *remote_desc = NULL;
-/* This is set by the target (thru the 'S' message)
- to denote that the target is in kernel mode. */
-static int cisco_kernel_mode = 0;
-
/* This variable 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
\f
/* User configurable variables for the number of characters in a
- memory read/write packet. MIN ((rs->remote_packet_size), 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
{
{
char *name;
char *title;
- enum cmd_auto_boolean detect;
+ enum auto_boolean detect;
enum packet_support support;
};
{
switch (config->detect)
{
- case CMD_AUTO_BOOLEAN_TRUE:
+ case AUTO_BOOLEAN_TRUE:
config->support = PACKET_ENABLE;
break;
- case CMD_AUTO_BOOLEAN_FALSE:
+ case AUTO_BOOLEAN_FALSE:
config->support = PACKET_DISABLE;
break;
- case CMD_AUTO_BOOLEAN_AUTO:
+ case AUTO_BOOLEAN_AUTO:
config->support = PACKET_SUPPORT_UNKNOWN;
break;
}
}
switch (config->detect)
{
- case CMD_AUTO_BOOLEAN_AUTO:
+ case AUTO_BOOLEAN_AUTO:
printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
config->name, config->title, support);
break;
- case CMD_AUTO_BOOLEAN_TRUE:
- case CMD_AUTO_BOOLEAN_FALSE:
+ case AUTO_BOOLEAN_TRUE:
+ case AUTO_BOOLEAN_FALSE:
printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
config->name, config->title, support);
break;
add_packet_config_cmd (struct packet_config *config,
char *name,
char *title,
- void (*set_func) (char *args, int from_tty,
- struct cmd_list_element *
- c),
- void (*show_func) (char *name,
- int from_tty),
+ cmd_sfunc_ftype *set_func,
+ cmd_sfunc_ftype *show_func,
struct cmd_list_element **set_remote_list,
struct cmd_list_element **show_remote_list,
int legacy)
char *cmd_name;
config->name = name;
config->title = title;
- config->detect = CMD_AUTO_BOOLEAN_AUTO;
+ config->detect = AUTO_BOOLEAN_AUTO;
config->support = PACKET_SUPPORT_UNKNOWN;
xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet",
name, title);
name, title);
/* set/show TITLE-packet {auto,on,off} */
xasprintf (&cmd_name, "%s-packet", title);
- set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure,
- &config->detect, set_doc,
- set_remote_list);
- set_cmd->function.sfunc = set_func;
- show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc,
- show_remote_list);
+ add_setshow_auto_boolean_cmd (cmd_name, class_obscure,
+ &config->detect, set_doc, show_doc,
+ set_func, show_func,
+ set_remote_list, show_remote_list);
/* set/show remote NAME-packet {auto,on,off} -- legacy */
if (legacy)
{
switch (config->support)
{
case PACKET_ENABLE:
- if (config->detect == CMD_AUTO_BOOLEAN_AUTO)
+ if (config->detect == AUTO_BOOLEAN_AUTO)
/* If the stub previously indicated that the packet was
supported then there is a protocol error.. */
error ("Protocol error: %s (%s) conflicting enabled responses.",
}
}
+/* Should we try the 'vCont' (descriptive resume) request? */
+static struct packet_config remote_protocol_vcont;
+
+static void
+set_remote_protocol_vcont_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ update_packet_config (&remote_protocol_vcont);
+}
+
+static void
+show_remote_protocol_vcont_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ show_packet_config_cmd (&remote_protocol_vcont);
+}
+
/* Should we try the 'qSymbol' (target symbol lookup service) request? */
static struct packet_config remote_protocol_qSymbol;
}
static void
-show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty)
+show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_qSymbol);
}
}
static void
-show_remote_protocol_e_packet_cmd (char *args, int from_tty)
+show_remote_protocol_e_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_e);
}
-
+
/* Should we try the 'E' (step over range / w signal #) request? */
static struct packet_config remote_protocol_E;
}
static void
-show_remote_protocol_E_packet_cmd (char *args, int from_tty)
+show_remote_protocol_E_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_E);
}
-
+
/* Should we try the 'P' (set register) request? */
}
static void
-show_remote_protocol_P_packet_cmd (char *args, int from_tty)
+show_remote_protocol_P_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_P);
}
}
static void
-show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty)
+show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]);
}
}
static void
-show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty)
+show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]);
}
}
static void
-show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty)
+show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]);
}
}
static void
-show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty)
+show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]);
}
}
static void
-show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty)
+show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]);
}
/* For compatibility with older distributions. Provide a ``set remote
Z-packet ...'' command that updates all the Z packet types. */
-static enum cmd_auto_boolean remote_Z_packet_detect;
+static enum auto_boolean remote_Z_packet_detect;
static void
set_remote_protocol_Z_packet_cmd (char *args, int from_tty,
}
static void
-show_remote_protocol_Z_packet_cmd (char *args, int from_tty)
+show_remote_protocol_Z_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
int i;
for (i = 0; i < NR_Z_PACKET_TYPES; i++)
This variable (NOT available to the user: auto-detect only!)
determines whether GDB will use the new, simpler "ThreadInfo"
query or the older, more complex syntax for thread queries.
- This is an auto-detect variable (set to true at each connect,
+ This is an auto-detect variable (set to true at each connect,
and set to false when the target fails to recognize it). */
static int use_threadinfo_query;
}
static void
-show_remote_protocol_binary_download_cmd (char *args,
- int from_tty)
+show_remote_protocol_binary_download_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
{
show_packet_config_cmd (&remote_protocol_binary_download);
}
+/* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */
+static struct packet_config remote_protocol_qPart_auxv;
+
+static void
+set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ update_packet_config (&remote_protocol_qPart_auxv);
+}
+
+static void
+show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ show_packet_config_cmd (&remote_protocol_qPart_auxv);
+}
+
/* Tokens for use by the asynchronous signal handlers for SIGINT */
-PTR sigint_remote_twice_token;
-PTR sigint_remote_token;
+static void *sigint_remote_twice_token;
+static void *sigint_remote_token;
/* These are pointers to hook functions that may be set in order to
modify resume/wait behavior for a particular architecture. */
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
}
}
#define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
-char *unpack_varlen_hex (char *buff, int *result);
+char *unpack_varlen_hex (char *buff, ULONGEST *result);
static char *unpack_nibble (char *buf, int *val);
static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */
struct gdb_ext_thread_info *info);
-static int adapt_remote_get_threadinfo (gdb_threadref * ref,
- int selection,
- struct gdb_ext_thread_info *info);
-
static char *pack_threadlist_request (char *pkt, int startflag,
int threadcount,
threadref * nextthread);
char *
unpack_varlen_hex (char *buff, /* packet to parse */
- int *result)
+ ULONGEST *result)
{
int nibble;
int retval = 0;
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
+#define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
the process */
static int
return result;
}
-/* Unfortunately, 61 bit thread-ids are bigger than the internal
- representation of a threadid. */
-
-static int
-adapt_remote_get_threadinfo (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 *
return oldpid;
}
-/* Find new threads for info threads command.
- * Original version, using John Metzler's thread protocol.
+/* Find new threads for info threads command.
+ * Original version, using John Metzler's thread protocol.
*/
static void
bufp = buf;
getpkt (bufp, (rs->remote_packet_size), 0);
if (bufp[0] != '\0') /* q packet recognized */
- {
+ {
while (*bufp++ == 'm') /* reply contains one or more TID */
{
do
return;
}
-/*
+/*
* Collect a descriptive string about the given thread.
* The target may say anything it wants to about the thread
* (typically info about its blocked / runnable state, name, etc.).
* This string will appear in the info threads display.
- *
+ *
* Optional: targets are not required to implement this function.
*/
\f
/* Clean up connection to a remote debugger. */
-/* ARGSUSED */
static void
remote_close (int quitting)
{
if (symfile_objfile == NULL)
return;
- offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
- memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
+ offs = ((struct section_offsets *)
+ alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)));
+ memcpy (offs, symfile_objfile->section_offsets,
+ SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections));
offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr;
objfile_relocate (symfile_objfile, offs);
}
-/*
- * Cisco version of section offsets:
- *
- * Instead of having GDB query the target for the section offsets,
- * Cisco lets the target volunteer the information! It's also in
- * a different format, so here are the functions that will decode
- * a section offset packet from a Cisco target.
- */
-
-/*
- * Function: remote_cisco_section_offsets
- *
- * Returns: zero for success, non-zero for failure
- */
-
-static int
-remote_cisco_section_offsets (bfd_vma text_addr,
- bfd_vma data_addr,
- bfd_vma bss_addr,
- bfd_signed_vma *text_offs,
- bfd_signed_vma *data_offs,
- bfd_signed_vma *bss_offs)
-{
- bfd_vma text_base, data_base, bss_base;
- struct minimal_symbol *start;
- asection *sect;
- bfd *abfd;
- int len;
-
- if (symfile_objfile == NULL)
- return -1; /* no can do nothin' */
-
- start = lookup_minimal_symbol ("_start", NULL, NULL);
- if (start == NULL)
- return -1; /* Can't find "_start" symbol */
-
- data_base = bss_base = 0;
- text_base = SYMBOL_VALUE_ADDRESS (start);
-
- abfd = symfile_objfile->obfd;
- for (sect = abfd->sections;
- sect != 0;
- sect = sect->next)
- {
- const char *p = bfd_get_section_name (abfd, sect);
- len = strlen (p);
- if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */
- if (data_base == 0 ||
- data_base > bfd_get_section_vma (abfd, sect))
- data_base = bfd_get_section_vma (abfd, sect);
- if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */
- if (bss_base == 0 ||
- bss_base > bfd_get_section_vma (abfd, sect))
- bss_base = bfd_get_section_vma (abfd, sect);
- }
- *text_offs = text_addr - text_base;
- *data_offs = data_addr - data_base;
- *bss_offs = bss_addr - bss_base;
- if (remote_debug)
- {
- char tmp[128];
-
- sprintf (tmp, "VMA: text = 0x");
- sprintf_vma (tmp + strlen (tmp), text_addr);
- sprintf (tmp + strlen (tmp), " data = 0x");
- sprintf_vma (tmp + strlen (tmp), data_addr);
- sprintf (tmp + strlen (tmp), " bss = 0x");
- sprintf_vma (tmp + strlen (tmp), bss_addr);
- fprintf_filtered (gdb_stdlog, tmp);
- fprintf_filtered (gdb_stdlog,
- "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
- paddr_nz (*text_offs),
- paddr_nz (*data_offs),
- paddr_nz (*bss_offs));
- }
-
- return 0;
-}
-
-/*
- * Function: remote_cisco_objfile_relocate
- *
- * Relocate the symbol file for a remote target.
- */
-
-void
-remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off,
- bfd_signed_vma bss_off)
-{
- struct section_offsets *offs;
-
- if (text_off != 0 || data_off != 0 || bss_off != 0)
- {
- /* FIXME: This code assumes gdb-stabs.h is being used; it's
- broken for xcoff, dwarf, sdb-coff, etc. But there is no
- simple canonical representation for this stuff. */
-
- offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
- memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
-
- offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off;
- offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off;
- offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off;
-
- /* First call the standard objfile_relocate. */
- objfile_relocate (symfile_objfile, offs);
-
- /* Now we need to fix up the section entries already attached to
- the exec target. These entries will control memory transfers
- from the exec file. */
-
- exec_set_section_offsets (text_off, data_off, bss_off);
- }
-}
-
/* Stub for catch_errors. */
static int
-remote_start_remote_dummy (void *dummy)
+remote_start_remote_dummy (struct ui_out *uiout, void *dummy)
{
start_remote (); /* Initialize gdb process mechanisms */
+ /* NOTE: Return something >=0. A -ve value is reserved for
+ catch_exceptions. */
return 1;
}
static int
-remote_start_remote (PTR dummy)
+remote_start_remote (struct ui_out *uiout, void *dummy)
{
immediate_quit++; /* Allow user to interrupt it */
putpkt ("?"); /* initiate a query from remote machine */
immediate_quit--;
- return remote_start_remote_dummy (dummy);
+ /* NOTE: See comment above in remote_start_remote_dummy(). This
+ function returns something >=0. */
+ return remote_start_remote_dummy (uiout, dummy);
}
/* Open a connection to a remote debugger.
static void
remote_open (char *name, int from_tty)
{
- remote_open_1 (name, from_tty, &remote_ops, 0);
+ remote_open_1 (name, from_tty, &remote_ops, 0, 0);
}
/* Just like remote_open, but with asynchronous support. */
static void
remote_async_open (char *name, int from_tty)
{
- remote_async_open_1 (name, from_tty, &remote_async_ops, 0);
+ remote_open_1 (name, from_tty, &remote_async_ops, 0, 1);
}
/* Open a connection to a remote debugger using the extended
static void
extended_remote_open (char *name, int from_tty)
{
- remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ );
+ remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */,
+ 0 /* async_p */);
}
/* Just like extended_remote_open, but with asynchronous support. */
static void
extended_remote_async_open (char *name, int from_tty)
{
- remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ );
+ remote_open_1 (name, from_tty, &extended_async_remote_ops,
+ 1 /*extended_p */, 1 /* async_p */);
}
/* Generic code for opening a connection to a remote target. */
update_packet_config (&remote_protocol_E);
update_packet_config (&remote_protocol_P);
update_packet_config (&remote_protocol_qSymbol);
+ update_packet_config (&remote_protocol_vcont);
for (i = 0; i < NR_Z_PACKET_TYPES; i++)
update_packet_config (&remote_protocol_Z[i]);
/* Force remote_write_bytes to check whether target supports binary
downloading. */
update_packet_config (&remote_protocol_binary_download);
+ update_packet_config (&remote_protocol_qPart_auxv);
}
/* Symbol look-up. */
if (sym == NULL)
sprintf (msg, "qSymbol::%s", &reply[8]);
else
- sprintf (msg, "qSymbol:%s:%s",
+ sprintf (msg, "qSymbol:%s:%s",
paddr_nz (SYMBOL_VALUE_ADDRESS (sym)),
&reply[8]);
putpkt (msg);
}
}
-static void
-remote_open_1 (char *name, int from_tty, struct target_ops *target,
- int extended_p)
+static struct serial *
+remote_serial_open (char *name)
{
- 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.).");
-
- /* See FIXME above */
- wait_forever_enabled_p = 1;
-
- target_preopen (from_tty);
-
- unpush_target (target);
-
- remote_desc = serial_open (name);
- if (!remote_desc)
- perror_with_name (name);
-
- if (baud_rate != -1)
- {
- if (serial_setbaudrate (remote_desc, baud_rate))
- {
- serial_close (remote_desc);
- perror_with_name (name);
- }
- }
-
- serial_raw (remote_desc);
-
- /* If there is something sitting in the buffer we might take it as a
- response to a command, which would be bad. */
- serial_flush_input (remote_desc);
-
- if (from_tty)
- {
- puts_filtered ("Remote debugging using ");
- puts_filtered (name);
- puts_filtered ("\n");
- }
- push_target (target); /* Switch to using remote target now */
-
- init_all_packet_configs ();
-
- general_thread = -2;
- continue_thread = -2;
-
- /* Probe for ability to use "ThreadInfo" query, as required. */
- use_threadinfo_query = 1;
- use_threadextra_query = 1;
-
- /* 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. */
+ static int udp_warning = 0;
- inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
-#ifdef SOLIB_CREATE_INFERIOR_HOOK
- /* First delete any symbols previously loaded from shared libraries. */
- no_shared_libraries (NULL, 0);
-#endif
-
- /* Start the remote connection; if error (0), discard this target.
- In particular, if the user quits, be sure to discard it
- (we'd be in an inconsistent state otherwise). */
- if (!catch_errors (remote_start_remote, NULL,
- "Couldn't establish connection to remote target\n",
- RETURN_MASK_ALL))
- {
- pop_target ();
- return;
- }
-
- if (extended_p)
+ /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
+ of in ser-tcp.c, because it is the remote protocol assuming that the
+ serial connection is reliable and not the serial connection promising
+ to be. */
+ if (!udp_warning && strncmp (name, "udp:", 4) == 0)
{
- /* Tell the remote that we are using the extended protocol. */
- char *buf = alloca (rs->remote_packet_size);
- putpkt ("!");
- getpkt (buf, (rs->remote_packet_size), 0);
+ warning ("The remote protocol may be unreliable over UDP.");
+ warning ("Some events may be lost, rendering further debugging "
+ "impossible.");
+ udp_warning = 1;
}
-#ifdef SOLIB_CREATE_INFERIOR_HOOK
- /* FIXME: need a master target_open vector from which all
- remote_opens can be called, so that stuff like this can
- go there. Failing that, the following code must be copied
- to the open function for any remote target that wants to
- support svr4 shared libraries. */
- /* Set up to detect and load shared libraries. */
- if (exec_bfd) /* No use without an exec file. */
- {
- SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
- remote_check_symbols (symfile_objfile);
- }
-#endif
+ return serial_open (name);
}
-/* Just like remote_open but with asynchronous support. */
static void
-remote_async_open_1 (char *name, int from_tty, struct target_ops *target,
- int extended_p)
+remote_open_1 (char *name, int from_tty, struct target_ops *target,
+ int extended_p, int async_p)
{
+ int ex;
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 */
+ if (!async_p)
+ wait_forever_enabled_p = 1;
target_preopen (from_tty);
unpush_target (target);
- remote_desc = serial_open (name);
+ remote_desc = remote_serial_open (name);
if (!remote_desc)
perror_with_name (name);
{
if (serial_setbaudrate (remote_desc, baud_rate))
{
+ /* The requested speed could not be set. Error out to
+ top level after closing remote_desc. Take care to
+ set remote_desc to NULL to avoid closing remote_desc
+ more than once. */
serial_close (remote_desc);
+ remote_desc = NULL;
perror_with_name (name);
}
}
puts_filtered (name);
puts_filtered ("\n");
}
-
push_target (target); /* Switch to using remote target now */
init_all_packet_configs ();
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_ptid = pid_to_ptid (MAGIC_NULL_PID);
- /* With this target we start out by owning the terminal. */
- remote_async_terminal_ours_p = 1;
+ inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
- /* FIXME: cagney/1999-09-23: During the initial connection it is
- assumed that the target is already ready and able to respond to
- requests. Unfortunately remote_start_remote() eventually calls
- wait_for_inferior() with no timeout. wait_forever_enabled_p gets
- around this. Eventually a mechanism that allows
- wait_for_inferior() to expect/get timeouts will be
- implemented. */
- wait_forever_enabled_p = 0;
+ if (async_p)
+ {
+ /* With this target we start out by owning the terminal. */
+ remote_async_terminal_ours_p = 1;
+
+ /* FIXME: cagney/1999-09-23: During the initial connection it is
+ assumed that the target is already ready and able to respond to
+ requests. Unfortunately remote_start_remote() eventually calls
+ wait_for_inferior() with no timeout. wait_forever_enabled_p gets
+ around this. Eventually a mechanism that allows
+ wait_for_inferior() to expect/get timeouts will be
+ implemented. */
+ wait_forever_enabled_p = 0;
+ }
#ifdef SOLIB_CREATE_INFERIOR_HOOK
/* First delete any symbols previously loaded from shared libraries. */
no_shared_libraries (NULL, 0);
#endif
- /* Start the remote connection; if error (0), discard this target.
- In particular, if the user quits, be sure to discard it
- (we'd be in an inconsistent state otherwise). */
- if (!catch_errors (remote_start_remote, NULL,
- "Couldn't establish connection to remote target\n",
- RETURN_MASK_ALL))
+ /* Start the remote connection. If error() or QUIT, discard this
+ target (we'd otherwise be in an inconsistent state) and then
+ propogate the error on up the exception chain. This ensures that
+ the caller doesn't stumble along blindly assuming that the
+ function succeeded. The CLI doesn't have this problem but other
+ UI's, such as MI do.
+
+ FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
+ this function should return an error indication letting the
+ caller restore the previous state. Unfortunately the command
+ ``target remote'' is directly wired to this function making that
+ impossible. On a positive note, the CLI side of this problem has
+ been fixed - the function set_cmd_context() makes it possible for
+ all the ``target ....'' commands to share a common callback
+ function. See cli-dump.c. */
+ ex = catch_exceptions (uiout,
+ remote_start_remote, NULL,
+ "Couldn't establish connection to remote"
+ " target\n",
+ RETURN_MASK_ALL);
+ if (ex < 0)
{
pop_target ();
- wait_forever_enabled_p = 1;
- return;
+ if (async_p)
+ wait_forever_enabled_p = 1;
+ throw_exception (ex);
}
- wait_forever_enabled_p = 1;
+ if (async_p)
+ wait_forever_enabled_p = 1;
if (extended_p)
{
getpkt (buf, (rs->remote_packet_size), 0);
}
#ifdef SOLIB_CREATE_INFERIOR_HOOK
- /* FIXME: need a master target_open vector from which all
- remote_opens can be called, so that stuff like this can
+ /* FIXME: need a master target_open vector from which all
+ remote_opens can be called, so that stuff like this can
go there. Failing that, the following code must be copied
- to the open function for any remote target that wants to
+ to the open function for any remote target that wants to
support svr4 shared libraries. */
/* Set up to detect and load shared libraries. */
strcpy (buf, "D");
remote_send (buf, (rs->remote_packet_size));
+ /* Unregister the file descriptor from the event loop. */
+ if (target_is_async_p ())
+ serial_async (remote_desc, NULL, 0);
+
target_mourn_inferior ();
if (from_tty)
puts_filtered ("Ending remote debugging.\n");
-
}
-/* Same as remote_detach, but with async support. */
+/* Same as remote_detach, but don't send the "D" packet; just disconnect. */
+
static void
-remote_async_detach (char *args, int from_tty)
+remote_disconnect (char *args, int from_tty)
{
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, (rs->remote_packet_size));
-
/* Unregister the file descriptor from the event loop. */
if (target_is_async_p ())
serial_async (remote_desc, NULL, 0);
return i;
}
\f
+/* Check for the availability of vCont. This function should also check
+ the response. */
+
+static void
+remote_vcont_probe (struct remote_state *rs, char *buf)
+{
+ strcpy (buf, "vCont?");
+ putpkt (buf);
+ getpkt (buf, rs->remote_packet_size, 0);
+
+ /* Make sure that the features we assume are supported. */
+ if (strncmp (buf, "vCont", 5) == 0)
+ {
+ char *p = &buf[5];
+ int support_s, support_S, support_c, support_C;
+
+ support_s = 0;
+ support_S = 0;
+ support_c = 0;
+ support_C = 0;
+ while (p && *p == ';')
+ {
+ p++;
+ if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0))
+ support_s = 1;
+ else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0))
+ support_S = 1;
+ else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0))
+ support_c = 1;
+ else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0))
+ support_C = 1;
+
+ p = strchr (p, ';');
+ }
+
+ /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
+ BUF will make packet_ok disable the packet. */
+ if (!support_s || !support_S || !support_c || !support_C)
+ buf[0] = 0;
+ }
+
+ packet_ok (buf, &remote_protocol_vcont);
+}
+
+/* Resume the remote inferior by using a "vCont" packet. The thread
+ to be resumed is PTID; STEP and SIGGNAL indicate whether the
+ resumed thread should be single-stepped and/or signalled. If PTID's
+ PID is -1, then all threads are resumed; the thread to be stepped and/or
+ signalled is given in the global INFERIOR_PTID. This function returns
+ non-zero iff it resumes the inferior.
+
+ This function issues a strict subset of all possible vCont commands at the
+ moment. */
+
+static int
+remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal)
+{
+ struct remote_state *rs = get_remote_state ();
+ int pid = PIDGET (ptid);
+ char *buf = NULL, *outbuf;
+ struct cleanup *old_cleanup;
+
+ buf = xmalloc (rs->remote_packet_size);
+ old_cleanup = make_cleanup (xfree, buf);
+
+ if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN)
+ remote_vcont_probe (rs, buf);
+
+ if (remote_protocol_vcont.support == PACKET_DISABLE)
+ {
+ do_cleanups (old_cleanup);
+ return 0;
+ }
+
+ /* If we could generate a wider range of packets, we'd have to worry
+ about overflowing BUF. Should there be a generic
+ "multi-part-packet" packet? */
+
+ if (PIDGET (inferior_ptid) == MAGIC_NULL_PID)
+ {
+ /* MAGIC_NULL_PTID means that we don't have any active threads, so we
+ don't have any PID numbers the inferior will understand. Make sure
+ to only send forms that do not specify a PID. */
+ if (step && siggnal != TARGET_SIGNAL_0)
+ outbuf = xstrprintf ("vCont;S%02x", siggnal);
+ else if (step)
+ outbuf = xstrprintf ("vCont;s");
+ else if (siggnal != TARGET_SIGNAL_0)
+ outbuf = xstrprintf ("vCont;C%02x", siggnal);
+ else
+ outbuf = xstrprintf ("vCont;c");
+ }
+ else if (pid == -1)
+ {
+ /* Resume all threads, with preference for INFERIOR_PTID. */
+ if (step && siggnal != TARGET_SIGNAL_0)
+ outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal,
+ PIDGET (inferior_ptid));
+ else if (step)
+ outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid));
+ else if (siggnal != TARGET_SIGNAL_0)
+ outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal,
+ PIDGET (inferior_ptid));
+ else
+ outbuf = xstrprintf ("vCont;c");
+ }
+ else
+ {
+ /* Scheduler locking; resume only PTID. */
+ if (step && siggnal != TARGET_SIGNAL_0)
+ outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid);
+ else if (step)
+ outbuf = xstrprintf ("vCont;s:%x", pid);
+ else if (siggnal != TARGET_SIGNAL_0)
+ outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid);
+ else
+ outbuf = xstrprintf ("vCont;c:%x", pid);
+ }
+
+ gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size);
+ make_cleanup (xfree, outbuf);
+
+ putpkt (outbuf);
+
+ do_cleanups (old_cleanup);
+
+ return 1;
+}
+
/* Tell the remote machine to resume. */
static enum target_signal last_sent_signal = TARGET_SIGNAL_0;
int pid = PIDGET (ptid);
char *p;
- if (pid == -1)
- set_thread (0, 0); /* run any thread */
- else
- set_thread (pid, 0); /* run this thread */
-
last_sent_signal = siggnal;
last_sent_step = step;
if (target_resume_hook)
(*target_resume_hook) ();
+ /* The vCont packet doesn't need to specify threads via Hc. */
+ if (remote_vcont_resume (ptid, step, siggnal))
+ return;
+
+ /* All other supported resume packets do use Hc, so call set_thread. */
+ if (pid == -1)
+ set_thread (0, 0); /* run any thread */
+ else
+ set_thread (pid, 0); /* run this thread */
/* The s/S/c/C packets do not return status. So if the target does
not support the S or C packets, the debug agent returns an empty
too is not supported. But that would require another copy of
the code to issue the 'e' packet (and fall back to 's' if not
supported) in remote_wait(). */
-
+
if (siggnal != TARGET_SIGNAL_0)
{
if (remote_protocol_E.support != PACKET_DISABLE)
static void
remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
- struct remote_state *rs = get_remote_state ();
- char *buf = alloca (rs->remote_packet_size);
- int pid = PIDGET (ptid);
- char *p;
-
- if (pid == -1)
- set_thread (0, 0); /* run any thread */
- else
- set_thread (pid, 0); /* run this thread */
-
- 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) ();
-
- /* The s/S/c/C packets do not return status. So if the target does
- not support the S or C packets, the debug agent returns an empty
- string which is detected in remote_wait(). This protocol defect
- is fixed in the e/E packets. */
+ remote_resume (ptid, step, siggnal);
- if (step && step_range_end)
- {
- /* If the target does not support the 'E' packet, we try the 'S'
- packet. Ideally we would fall back to the 'e' packet if that
- too is not supported. But that would require another copy of
- the code to issue the 'e' packet (and fall back to 's' if not
- supported) in remote_wait(). */
-
- if (siggnal != TARGET_SIGNAL_0)
- {
- if (remote_protocol_E.support != PACKET_DISABLE)
- {
- p = buf;
- *p++ = 'E';
- *p++ = tohex (((int) siggnal >> 4) & 0xf);
- *p++ = tohex (((int) siggnal) & 0xf);
- *p++ = ',';
- p += hexnumstr (p, (ULONGEST) step_range_start);
- *p++ = ',';
- p += hexnumstr (p, (ULONGEST) step_range_end);
- *p++ = 0;
-
- putpkt (buf);
- getpkt (buf, (rs->remote_packet_size), 0);
-
- if (packet_ok (buf, &remote_protocol_E) == PACKET_OK)
- goto register_event_loop;
- }
- }
- else
- {
- if (remote_protocol_e.support != PACKET_DISABLE)
- {
- p = buf;
- *p++ = 'e';
- p += hexnumstr (p, (ULONGEST) step_range_start);
- *p++ = ',';
- p += hexnumstr (p, (ULONGEST) step_range_end);
- *p++ = 0;
-
- putpkt (buf);
- getpkt (buf, (rs->remote_packet_size), 0);
-
- if (packet_ok (buf, &remote_protocol_e) == PACKET_OK)
- goto register_event_loop;
- }
- }
- }
-
- if (siggnal != TARGET_SIGNAL_0)
- {
- buf[0] = step ? 'S' : 'C';
- buf[1] = tohex (((int) siggnal >> 4) & 0xf);
- buf[2] = tohex ((int) siggnal & 0xf);
- buf[3] = '\0';
- }
- else
- strcpy (buf, step ? "s" : "c");
-
- putpkt (buf);
-
-register_event_loop:
/* We are about to start executing the inferior, let's register it
with the event loop. NOTE: this is the one place where all the
execution commands end up. We could alternatively do this in each
Give up (and stop debugging it)? "))
{
target_mourn_inferior ();
- return_to_top_level (RETURN_QUIT);
+ throw_exception (RETURN_QUIT);
}
target_terminal_inferior ();
/* Wait until the remote machine stops, then return,
storing status in STATUS just as `wait' would.
- Returns "pid", which in the case of a multi-threaded
+ Returns "pid", which in the case of a multi-threaded
remote OS, is the thread-id. */
static ptid_t
{
struct remote_state *rs = get_remote_state ();
unsigned char *buf = alloca (rs->remote_packet_size);
- int thread_num = -1;
+ ULONGEST thread_num = -1;
+ ULONGEST addr;
status->kind = TARGET_WAITKIND_EXITED;
status->value.integer = 0;
if (target_wait_loop_hook)
(*target_wait_loop_hook) ();
+ remote_stopped_by_watchpoint_p = 0;
+
switch (buf[0])
{
case 'E': /* Error of some sort */
warning ("Remote failure reply: %s", buf);
continue;
+ case 'F': /* File-I/O request */
+ remote_fileio_request (buf);
+ continue;
case 'T': /* Status with PC, SP, FP, ... */
{
int i;
- long regno;
- char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE);
+ char regs[MAX_REGISTER_SIZE];
/* Expedited reply, containing Signal, {regno, reg} repeat */
/* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
unsigned char *p1;
char *p_temp;
int fieldsize;
+ LONGEST pnum = 0;
+
+ /* If the packet contains a register number save it in pnum
+ and set p1 to point to the character following it.
+ Otherwise p1 points to p. */
- /* Read the register number */
- regno = strtol ((const char *) p, &p_temp, 16);
- p1 = (unsigned char *) p_temp;
+ /* If this packet is an awatch packet, don't parse the 'a'
+ as a register number. */
+
+ if (strncmp (p, "awatch", strlen("awatch")) != 0)
+ {
+ /* Read the ``P'' register number. */
+ pnum = strtol (p, &p_temp, 16);
+ p1 = (unsigned char *) p_temp;
+ }
+ else
+ p1 = p;
if (p1 == p) /* No register number present here */
{
- p1 = (unsigned char *) strchr ((const char *) p, ':');
+ p1 = (unsigned char *) strchr (p, ':');
if (p1 == NULL)
warning ("Malformed packet(a) (missing colon): %s\n\
Packet: '%s'\n",
p, buf);
- if (strncmp ((const char *) p, "thread", p1 - p) == 0)
+ if (strncmp (p, "thread", p1 - p) == 0)
{
p_temp = unpack_varlen_hex (++p1, &thread_num);
record_currthread (thread_num);
p = (unsigned char *) p_temp;
}
+ else if ((strncmp (p, "watch", p1 - p) == 0)
+ || (strncmp (p, "rwatch", p1 - p) == 0)
+ || (strncmp (p, "awatch", p1 - p) == 0))
+ {
+ remote_stopped_by_watchpoint_p = 1;
+ p = unpack_varlen_hex (++p1, &addr);
+ remote_watch_data_address = (CORE_ADDR)addr;
+ }
+ else
+ {
+ /* Silently skip unknown optional info. */
+ p_temp = strchr (p1 + 1, ';');
+ if (p_temp)
+ p = (unsigned char *) p_temp;
+ }
}
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);
+ error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
+ p, buf);
- if (regno >= NUM_REGS)
- warning ("Remote sent bad register number %ld: %s\n\
-Packet: '%s'\n",
- regno, p, buf);
+ if (reg == NULL)
+ error ("Remote sent bad register number %s: %s\nPacket: '%s'\n",
+ phex_nz (pnum, 0), p, buf);
- fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno));
+ fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum));
p += 2 * fieldsize;
- if (fieldsize < REGISTER_RAW_SIZE (regno))
+ if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum))
warning ("Remote reply is too short: %s", buf);
- supply_register (regno, regs);
+ supply_register (reg->regnum, regs);
}
if (*p++ != ';')
- {
- warning ("Remote register badly formatted: %s", buf);
- warning (" here: %s", p);
- }
+ error ("Remote register badly formatted: %s\nhere: %s", buf, p);
}
}
/* fall through */
if (buf[3] == 'p')
{
- /* Export Cisco kernel mode as a convenience variable
- (so that it can be used in the GDB prompt if desired). */
-
- if (cisco_kernel_mode == 1)
- set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
- value_from_string ("PDEBUG-"));
- cisco_kernel_mode = 0;
thread_num = strtol ((const char *) &buf[4], NULL, 16);
record_currthread (thread_num);
}
- else if (buf[3] == 'k')
- {
- /* Export Cisco kernel mode as a convenience variable
- (so that it can be used in the GDB prompt if desired). */
-
- if (cisco_kernel_mode == 1)
- set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
- value_from_string ("KDEBUG-"));
- cisco_kernel_mode = 1;
- }
goto got_status;
- case 'N': /* Cisco special: status and offsets */
- {
- bfd_vma text_addr, data_addr, bss_addr;
- bfd_signed_vma text_off, data_off, bss_off;
- unsigned char *p1;
-
- status->kind = TARGET_WAITKIND_STOPPED;
- status->value.sig = (enum target_signal)
- (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
-
- if (symfile_objfile == NULL)
- {
- warning ("Relocation packet received with no symbol file. \
-Packet Dropped");
- goto got_status;
- }
-
- /* Relocate object file. Buffer format is NAATT;DD;BB
- * where AA is the signal number, TT is the new text
- * address, DD * is the new data address, and BB is the
- * new bss address. */
-
- p = &buf[3];
- text_addr = strtoul (p, (char **) &p1, 16);
- if (p1 == p || *p1 != ';')
- warning ("Malformed relocation packet: Packet '%s'", buf);
- p = p1 + 1;
- data_addr = strtoul (p, (char **) &p1, 16);
- if (p1 == p || *p1 != ';')
- warning ("Malformed relocation packet: Packet '%s'", buf);
- p = p1 + 1;
- bss_addr = strtoul (p, (char **) &p1, 16);
- if (p1 == p)
- warning ("Malformed relocation packet: Packet '%s'", buf);
-
- if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
- &text_off, &data_off, &bss_off)
- == 0)
- if (text_off != 0 || data_off != 0 || bss_off != 0)
- remote_cisco_objfile_relocate (text_off, data_off, bss_off);
-
- goto got_status;
- }
case 'W': /* Target exited */
{
/* The remote process exited. */
{
struct remote_state *rs = get_remote_state ();
unsigned char *buf = alloca (rs->remote_packet_size);
- int thread_num = -1;
+ ULONGEST thread_num = -1;
+ ULONGEST addr;
status->kind = TARGET_WAITKIND_EXITED;
status->value.integer = 0;
+ remote_stopped_by_watchpoint_p = 0;
+
while (1)
{
unsigned char *p;
case 'E': /* Error of some sort */
warning ("Remote failure reply: %s", buf);
continue;
+ case 'F': /* File-I/O request */
+ remote_fileio_request (buf);
+ continue;
case 'T': /* Status with PC, SP, FP, ... */
{
int i;
- long regno;
- char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE);
+ char regs[MAX_REGISTER_SIZE];
/* Expedited reply, containing Signal, {regno, reg} repeat */
/* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
unsigned char *p1;
char *p_temp;
int fieldsize;
+ long pnum = 0;
+
+ /* If the packet contains a register number, save it in pnum
+ and set p1 to point to the character following it.
+ Otherwise p1 points to p. */
- /* Read the register number */
- regno = strtol ((const char *) p, &p_temp, 16);
- p1 = (unsigned char *) p_temp;
+ /* If this packet is an awatch packet, don't parse the 'a'
+ as a register number. */
+
+ if (!strncmp (p, "awatch", strlen ("awatch")) != 0)
+ {
+ /* Read the register number. */
+ pnum = strtol (p, &p_temp, 16);
+ p1 = (unsigned char *) p_temp;
+ }
+ else
+ p1 = p;
if (p1 == p) /* No register number present here */
{
- p1 = (unsigned char *) strchr ((const char *) p, ':');
+ p1 = (unsigned char *) strchr (p, ':');
if (p1 == NULL)
- warning ("Malformed packet(a) (missing colon): %s\n\
-Packet: '%s'\n",
- p, buf);
- if (strncmp ((const char *) p, "thread", p1 - p) == 0)
+ error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n",
+ p, buf);
+ if (strncmp (p, "thread", p1 - p) == 0)
{
p_temp = unpack_varlen_hex (++p1, &thread_num);
record_currthread (thread_num);
p = (unsigned char *) p_temp;
}
+ else if ((strncmp (p, "watch", p1 - p) == 0)
+ || (strncmp (p, "rwatch", p1 - p) == 0)
+ || (strncmp (p, "awatch", p1 - p) == 0))
+ {
+ remote_stopped_by_watchpoint_p = 1;
+ p = unpack_varlen_hex (++p1, &addr);
+ remote_watch_data_address = (CORE_ADDR)addr;
+ }
+ else
+ {
+ /* Silently skip unknown optional info. */
+ p_temp = (unsigned char *) strchr (p1 + 1, ';');
+ if (p_temp)
+ p = p_temp;
+ }
}
+
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);
+ error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
+ p, buf);
- if (regno >= NUM_REGS)
- warning ("Remote sent bad register number %ld: %s\n\
-Packet: '%s'\n",
- regno, p, buf);
+ if (reg == NULL)
+ error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n",
+ pnum, p, buf);
- fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno));
+ fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum));
p += 2 * fieldsize;
- if (fieldsize < REGISTER_RAW_SIZE (regno))
+ if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum))
warning ("Remote reply is too short: %s", buf);
- supply_register (regno, regs);
+ supply_register (reg->regnum, regs);
}
if (*p++ != ';')
- {
- warning ("Remote register badly formatted: %s", buf);
- warning (" here: %s", p);
- }
+ error ("Remote register badly formatted: %s\nhere: %s",
+ buf, p);
}
}
/* fall through */
if (buf[3] == 'p')
{
- /* Export Cisco kernel mode as a convenience variable
- (so that it can be used in the GDB prompt if desired). */
-
- if (cisco_kernel_mode == 1)
- set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
- value_from_string ("PDEBUG-"));
- cisco_kernel_mode = 0;
thread_num = strtol ((const char *) &buf[4], NULL, 16);
record_currthread (thread_num);
}
- else if (buf[3] == 'k')
- {
- /* Export Cisco kernel mode as a convenience variable
- (so that it can be used in the GDB prompt if desired). */
-
- if (cisco_kernel_mode == 1)
- set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
- value_from_string ("KDEBUG-"));
- cisco_kernel_mode = 1;
- }
goto got_status;
- case 'N': /* Cisco special: status and offsets */
- {
- bfd_vma text_addr, data_addr, bss_addr;
- bfd_signed_vma text_off, data_off, bss_off;
- unsigned char *p1;
-
- status->kind = TARGET_WAITKIND_STOPPED;
- status->value.sig = (enum target_signal)
- (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
-
- if (symfile_objfile == NULL)
- {
- warning ("Relocation packet recieved with no symbol file. \
-Packet Dropped");
- goto got_status;
- }
-
- /* Relocate object file. Buffer format is NAATT;DD;BB
- * where AA is the signal number, TT is the new text
- * address, DD * is the new data address, and BB is the
- * new bss address. */
-
- p = &buf[3];
- text_addr = strtoul (p, (char **) &p1, 16);
- if (p1 == p || *p1 != ';')
- warning ("Malformed relocation packet: Packet '%s'", buf);
- p = p1 + 1;
- data_addr = strtoul (p, (char **) &p1, 16);
- if (p1 == p || *p1 != ';')
- warning ("Malformed relocation packet: Packet '%s'", buf);
- p = p1 + 1;
- bss_addr = strtoul (p, (char **) &p1, 16);
- if (p1 == p)
- warning ("Malformed relocation packet: Packet '%s'", buf);
-
- if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
- &text_off, &data_off, &bss_off)
- == 0)
- if (text_off != 0 || data_off != 0 || bss_off != 0)
- remote_cisco_objfile_relocate (text_off, data_off, bss_off);
-
- goto got_status;
- }
case 'W': /* Target exited */
{
/* The remote process exited. */
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)
{
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, (rs->remote_packet_size));
(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
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)
+ {
+ if (r->offset * 2 >= strlen (buf))
+ /* A short packet that didn't include the register's
+ value, this implies that the register is zero (and
+ not that the register is unavailable). Supply that
+ zero value. */
+ regcache_raw_supply (current_regcache, r->regnum, NULL);
+ else if (buf[r->offset * 2] == 'x')
+ {
+ gdb_assert (r->offset * 2 < strlen (buf));
+ /* The register isn't available, mark it as such (at
+ the same time setting the value to zero). */
+ regcache_raw_supply (current_regcache, r->regnum, NULL);
+ set_register_cached (i, -1);
+ }
+ else
+ regcache_raw_supply (current_regcache, r->regnum,
+ regs + r->offset);
+ }
+ }
+ }
}
/* Prepare to store registers. Since we may send them all (using a
static void
remote_prepare_to_store (void)
{
+ struct remote_state *rs = get_remote_state ();
+ int i;
+ char buf[MAX_REGISTER_SIZE];
+
/* Make sure the entire registers array is valid. */
switch (remote_protocol_P.support)
{
case PACKET_DISABLE:
case PACKET_SUPPORT_UNKNOWN:
- read_register_bytes (0, (char *) NULL, REGISTER_BYTES);
+ /* Make sure all the necessary registers are cached. */
+ for (i = 0; i < NUM_REGS; i++)
+ if (rs->regs[i].in_g_packet)
+ regcache_raw_read (current_regcache, rs->regs[i].regnum, buf);
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 (rs->remote_packet_size);
- char *regp;
+ char regp[MAX_REGISTER_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, (rs->remote_packet_size));
+ regcache_collect (reg->regnum, regp);
+ bin2hex (regp, p, DEPRECATED_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)
{
struct remote_state *rs = get_remote_state ();
- char *buf = alloca (rs->remote_packet_size);
+ 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, (rs->remote_packet_size));
{
char *buf = alloca (rs->remote_packet_size);
char *p;
-
+
p = buf;
*p++ = 'X';
p += hexnumstr (p, (ULONGEST) addr);
p += hexnumstr (p, (ULONGEST) 0);
*p++ = ':';
*p = '\0';
-
+
putpkt_binary (buf, (int) (p - buf));
getpkt (buf, (rs->remote_packet_size), 0);
Returns number of bytes transferred, or 0 (setting errno) for
error. Only transfer a single packet. */
-static int
+int
remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len)
{
unsigned char *buf;
- int max_buf_size; /* Max size of packet output buffer */
unsigned char *p;
unsigned char *plen;
long sizeof_buf;
int plenlen;
int todo;
int nr_bytes;
+ int payload_size;
+ unsigned char *payload_start;
- /* Verify that the target can support a binary download */
+ /* Verify that the target can support a binary download. */
check_binary_download (memaddr);
- /* Determine the max packet size. */
- max_buf_size = get_memory_write_packet_size ();
- sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */
+ /* Compute the size, and then allocate space for the largest
+ possible packet. Include space for an extra trailing NUL. */
+ sizeof_buf = get_memory_write_packet_size () + 1;
buf = alloca (sizeof_buf);
- /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
- max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4;
+ /* Compute the size of the actual payload by subtracting out the
+ packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
+ payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN")
+ + hexnumlen (memaddr)
+ + hexnumlen (len)));
- /* construct "M"<memaddr>","<len>":" */
- /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
- p = buf;
+ /* Construct the packet header: "[MX]<memaddr>,<len>:". */
- /* Append [XM]. Compute a best guess of the number of bytes
+ /* Append "[XM]". Compute a best guess of the number of bytes
actually transfered. */
+ p = buf;
switch (remote_protocol_binary_download.support)
{
case PACKET_ENABLE:
*p++ = 'X';
/* Best guess at number of bytes that will fit. */
- todo = min (len, max_buf_size);
+ todo = min (len, payload_size);
break;
case PACKET_DISABLE:
*p++ = 'M';
/* num bytes that will fit */
- todo = min (len, max_buf_size / 2);
+ todo = min (len, payload_size / 2);
break;
case PACKET_SUPPORT_UNKNOWN:
internal_error (__FILE__, __LINE__,
default:
internal_error (__FILE__, __LINE__, "bad switch");
}
-
- /* Append <memaddr> */
+
+ /* Append "<memaddr>". */
memaddr = remote_address_masked (memaddr);
p += hexnumstr (p, (ULONGEST) memaddr);
+
+ /* Append ",". */
*p++ = ',';
-
- /* Append <len>. Retain the location/size of <len>. It may
- need to be adjusted once the packet body has been created. */
+
+ /* Append <len>. Retain the location/size of <len>. It may need to
+ be adjusted once the packet body has been created. */
plen = p;
plenlen = hexnumstr (p, (ULONGEST) todo);
p += plenlen;
+
+ /* Append ":". */
*p++ = ':';
*p = '\0';
-
- /* Append the packet body. */
+
+ /* Append the packet body. */
+ payload_start = p;
switch (remote_protocol_binary_download.support)
{
case PACKET_ENABLE:
increasing byte addresses. Only escape certain critical
characters. */
for (nr_bytes = 0;
- (nr_bytes < todo) && (p - buf) < (max_buf_size - 2);
+ (nr_bytes < todo) && (p - payload_start) < payload_size;
nr_bytes++)
{
switch (myaddr[nr_bytes] & 0xff)
}
if (nr_bytes < todo)
{
- /* Escape chars have filled up the buffer prematurely,
+ /* Escape chars have filled up the buffer prematurely,
and we have actually sent fewer bytes than planned.
Fix-up the length field of the packet. Use the same
number of characters as before. */
-
plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen);
*plen = ':'; /* overwrite \0 from hexnumnstr() */
}
default:
internal_error (__FILE__, __LINE__, "bad switch");
}
-
+
putpkt_binary (buf, (int) (p - buf));
getpkt (buf, sizeof_buf, 0);
-
+
if (buf[0] == 'E')
{
/* There is no correspondance between what the remote protocol
errno = EIO;
return 0;
}
-
+
/* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
bytes than we'd planned. */
return nr_bytes;
caller and its callers caller ;-) already contains code for
handling partial reads. */
-static int
+int
remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len)
{
char *buf;
putpkt (buf);
getpkt (buf, sizeof_buf, 0);
- if (buf[0] == 'E')
+ if (buf[0] == 'E'
+ && isxdigit (buf[1]) && isxdigit (buf[2])
+ && buf[3] == '\0')
{
/* There is no correspondance between what the remote protocol uses
for errors and errno codes. We would like a cleaner way of
SHOULD_WRITE is nonzero. Returns length of data written or read; 0
for error. TARGET is unused. */
-/* 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;
int targ_len;
int res;
- REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len);
+ /* Should this be the selected frame? */
+ gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache,
+ mem_addr, mem_len,
+ &targ_addr, &targ_len);
if (targ_len <= 0)
return 0;
return res;
}
-
-#if 0
-/* Enable after 4.12. */
-
-void
-remote_search (int len, char *data, char *mask, CORE_ADDR startaddr,
- int increment, CORE_ADDR lorange, CORE_ADDR hirange,
- CORE_ADDR *addr_found, char *data_found)
-{
- if (increment == -4 && len == 4)
- {
- long mask_long, data_long;
- long data_found_long;
- CORE_ADDR addr_we_found;
- char *buf = alloca (rs->remote_packet_size);
- long returned_long[2];
- char *p;
-
- mask_long = extract_unsigned_integer (mask, len);
- data_long = extract_unsigned_integer (data, len);
- sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long);
- putpkt (buf);
- getpkt (buf, (rs->remote_packet_size), 0);
- if (buf[0] == '\0')
- {
- /* The stub doesn't support the 't' request. We might want to
- remember this fact, but on the other hand the stub could be
- switched on us. Maybe we should remember it only until
- the next "target remote". */
- generic_search (len, data, mask, startaddr, increment, lorange,
- hirange, addr_found, data_found);
- return;
- }
-
- if (buf[0] == 'E')
- /* There is no correspondance between what the remote protocol uses
- for errors and errno codes. We would like a cleaner way of
- representing errors (big enough to include errno codes, bfd_error
- codes, and others). But for now just use EIO. */
- memory_error (EIO, startaddr);
- p = buf;
- addr_we_found = 0;
- while (*p != '\0' && *p != ',')
- addr_we_found = (addr_we_found << 4) + fromhex (*p++);
- if (*p == '\0')
- error ("Protocol error: short return for search");
-
- data_found_long = 0;
- while (*p != '\0' && *p != ',')
- data_found_long = (data_found_long << 4) + fromhex (*p++);
- /* Ignore anything after this comma, for future extensions. */
-
- if (addr_we_found < lorange || addr_we_found >= hirange)
- {
- *addr_found = 0;
- return;
- }
-
- *addr_found = addr_we_found;
- *data_found = store_unsigned_integer (data_we_found, len);
- return;
- }
- generic_search (len, data, mask, startaddr, increment, lorange,
- hirange, addr_found, data_found);
-}
-#endif /* 0 */
-\f
static void
remote_files_info (struct target_ops *ignore)
{
}
}
-static int remote_cisco_mode;
-
/* Come here after finding the start of the frame. Collect the rest
into BUF, verifying the checksum, length, and handling run-length
compression. No more than sizeof_buf-1 characters are read so that
check_0 = readchar (remote_timeout);
if (check_0 >= 0)
check_1 = readchar (remote_timeout);
-
+
if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT)
{
if (remote_debug)
int repeat;
csum += c;
- if (remote_cisco_mode == 0)
- {
- c = readchar (remote_timeout);
- csum += c;
- repeat = c - ' ' + 3; /* Compute repeat count */
- }
- else
- {
- /* Cisco's run-length encoding variant uses two
- hex chars to represent the repeat count. */
-
- c = readchar (remote_timeout);
- csum += c;
- repeat = fromhex (c) << 4;
- c = readchar (remote_timeout);
- csum += c;
- repeat += fromhex (c);
- }
+ c = readchar (remote_timeout);
+ csum += c;
+ repeat = c - ' ' + 3; /* Compute repeat count */
/* The character before ``*'' is repeated. */
- if (repeat > 0 && repeat <= 255
+ if (repeat > 0 && repeat <= 255
&& bc > 0
&& bc + repeat - 1 < sizeof_buf - 1)
{
{
/* 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.
+ and the next time the user says "run" it'll fail.
FIXME: What is the right thing to do here? */
#if 0
/* 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.
+ a special create_inferior function.
FIXME: One day add support for changing the exec file
we're debugging, arguments and an environment. */
}
\f
-/* On some machines, e.g. 68k, we may use a different breakpoint instruction
- than other targets; in those use REMOTE_BREAKPOINT instead of just
- BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
- and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
- the standard routines that are in mem-break.c. */
+/* On some machines, e.g. 68k, we may use a different breakpoint
+ instruction than other targets; in those use
+ DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
+ Also, bi-endian targets may define
+ DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
+ DEPRECATED_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. */
+/* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
+ target should use an identical BREAKPOINT_FROM_PC. As for native,
+ the ARCH-OS-tdep.c code can override the default. */
-#if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
-#define REMOTE_BREAKPOINT
+#if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
+#define DEPRECATED_REMOTE_BREAKPOINT
#endif
-#ifdef REMOTE_BREAKPOINT
+#ifdef DEPRECATED_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
+#if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
+#define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
+#define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
#endif
-static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT;
-static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT;
+static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT;
+static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT;
-#endif /* REMOTE_BREAKPOINT */
+#endif /* DEPRECATED_REMOTE_BREAKPOINT */
-/* Insert a breakpoint on targets that don't have any better breakpoint
- support. We read the contents of the target location and stash it,
- then overwrite it with a breakpoint instruction. ADDR is the target
- location in the target machine. CONTENTS_CACHE is a pointer to
- memory allocated for saving the target contents. It is guaranteed
- by the caller to be long enough to save sizeof BREAKPOINT bytes (this
- is accomplished via BREAKPOINT_MAX). */
+/* Insert a breakpoint on targets that don't have any better
+ breakpoint support. We read the contents of the target location
+ and stash it, then overwrite it with a breakpoint instruction.
+ ADDR is the target location in the target machine. CONTENTS_CACHE
+ is a pointer to memory allocated for saving the target contents.
+ It is guaranteed by the caller to be long enough to save the number
+ of bytes returned by BREAKPOINT_FROM_PC. */
static int
remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
{
struct remote_state *rs = get_remote_state ();
-#ifdef REMOTE_BREAKPOINT
+#ifdef DEPRECATED_REMOTE_BREAKPOINT
int val;
-#endif
+#endif
int bp_size;
/* Try the "Z" s/w breakpoint packet if it is not already disabled.
If it succeeds, then set the support to PACKET_ENABLE. If it
fails, and the user has explicitly requested the Z support then
report an error, otherwise, mark it disabled and go on. */
-
+
if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE)
{
char *buf = alloca (rs->remote_packet_size);
char *p = buf;
-
+
addr = remote_address_masked (addr);
*(p++) = 'Z';
*(p++) = '0';
p += hexnumstr (p, (ULONGEST) addr);
BREAKPOINT_FROM_PC (&addr, &bp_size);
sprintf (p, ",%d", bp_size);
-
+
putpkt (buf);
getpkt (buf, (rs->remote_packet_size), 0);
}
}
-#ifdef REMOTE_BREAKPOINT
+#ifdef DEPRECATED_REMOTE_BREAKPOINT
val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
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
return val;
#else
return memory_insert_breakpoint (addr, contents_cache);
-#endif /* REMOTE_BREAKPOINT */
+#endif /* DEPRECATED_REMOTE_BREAKPOINT */
}
static int
{
char *buf = alloca (rs->remote_packet_size);
char *p = buf;
-
+
*(p++) = 'z';
*(p++) = '0';
*(p++) = ',';
p += hexnumstr (p, (ULONGEST) addr);
BREAKPOINT_FROM_PC (&addr, &bp_size);
sprintf (p, ",%d", bp_size);
-
+
putpkt (buf);
getpkt (buf, (rs->remote_packet_size), 0);
return (buf[0] == 'E');
}
-#ifdef REMOTE_BREAKPOINT
+#ifdef DEPRECATED_REMOTE_BREAKPOINT
return target_write_memory (addr, contents_cache, sizeof big_break_insn);
#else
return memory_remove_breakpoint (addr, contents_cache);
-#endif /* REMOTE_BREAKPOINT */
+#endif /* DEPRECATED_REMOTE_BREAKPOINT */
}
static int
}
}
-/* FIXME: This function should be static and a member of the remote
- target vector. */
-
-int
+static int
remote_insert_watchpoint (CORE_ADDR addr, int len, int type)
{
struct remote_state *rs = get_remote_state ();
error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
remote_protocol_Z[packet].name,
remote_protocol_Z[packet].title);
-
+
sprintf (buf, "Z%x,", packet);
p = strchr (buf, '\0');
addr = remote_address_masked (addr);
p += hexnumstr (p, (ULONGEST) addr);
sprintf (p, ",%x", len);
-
+
putpkt (buf);
getpkt (buf, (rs->remote_packet_size), 0);
"remote_insert_watchpoint: reached end of function");
}
-/* FIXME: This function should be static and a member of the remote
- target vector. */
-int
+static int
remote_remove_watchpoint (CORE_ADDR addr, int len, int type)
{
struct remote_state *rs = get_remote_state ();
error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
remote_protocol_Z[packet].name,
remote_protocol_Z[packet].title);
-
+
sprintf (buf, "z%x,", packet);
p = strchr (buf, '\0');
addr = remote_address_masked (addr);
"remote_remove_watchpoint: reached end of function");
}
-/* FIXME: This function should be static and a member of the remote
- target vector. */
-int
-remote_insert_hw_breakpoint (CORE_ADDR addr, int len)
+int remote_hw_watchpoint_limit = -1;
+int remote_hw_breakpoint_limit = -1;
+
+static int
+remote_check_watch_resources (int type, int cnt, int ot)
{
+ if (type == bp_hardware_breakpoint)
+ {
+ if (remote_hw_breakpoint_limit == 0)
+ return 0;
+ else if (remote_hw_breakpoint_limit < 0)
+ return 1;
+ else if (cnt <= remote_hw_breakpoint_limit)
+ return 1;
+ }
+ else
+ {
+ if (remote_hw_watchpoint_limit == 0)
+ return 0;
+ else if (remote_hw_watchpoint_limit < 0)
+ return 1;
+ else if (ot)
+ return -1;
+ else if (cnt <= remote_hw_watchpoint_limit)
+ return 1;
+ }
+ return -1;
+}
+
+static int
+remote_stopped_by_watchpoint (void)
+{
+ return remote_stopped_by_watchpoint_p;
+}
+
+static CORE_ADDR
+remote_stopped_data_address (void)
+{
+ if (remote_stopped_by_watchpoint ())
+ return remote_watch_data_address;
+ return (CORE_ADDR)0;
+}
+
+
+static int
+remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow)
+{
+ int len = 0;
struct remote_state *rs = get_remote_state ();
char *buf = alloca (rs->remote_packet_size);
char *p = buf;
-
+
+ /* The length field should be set to the size of a breakpoint
+ instruction. */
+
+ BREAKPOINT_FROM_PC (&addr, &len);
+
if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE)
error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
remote_protocol_Z[Z_PACKET_HARDWARE_BP].name,
remote_protocol_Z[Z_PACKET_HARDWARE_BP].title);
-
+
*(p++) = 'Z';
*(p++) = '1';
*(p++) = ',';
-
+
addr = remote_address_masked (addr);
p += hexnumstr (p, (ULONGEST) addr);
sprintf (p, ",%x", len);
return 0;
}
internal_error (__FILE__, __LINE__,
- "remote_remove_watchpoint: reached end of function");
+ "remote_insert_hw_breakpoint: reached end of function");
}
-/* FIXME: This function should be static and a member of the remote
- target vector. */
-int
-remote_remove_hw_breakpoint (CORE_ADDR addr, int len)
+static int
+remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow)
{
+ int len;
struct remote_state *rs = get_remote_state ();
char *buf = alloca (rs->remote_packet_size);
char *p = buf;
-
+
+ /* The length field should be set to the size of a breakpoint
+ instruction. */
+
+ BREAKPOINT_FROM_PC (&addr, &len);
+
if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE)
error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
remote_protocol_Z[Z_PACKET_HARDWARE_BP].name,
remote_protocol_Z[Z_PACKET_HARDWARE_BP].title);
-
+
*(p++) = 'z';
*(p++) = '1';
*(p++) = ',';
-
+
addr = remote_address_masked (addr);
p += hexnumstr (p, (ULONGEST) addr);
sprintf (p, ",%x", len);
putpkt(buf);
getpkt (buf, (rs->remote_packet_size), 0);
-
+
switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP]))
{
case PACKET_ERROR:
return 0;
}
internal_error (__FILE__, __LINE__,
- "remote_remove_watchpoint: reached end of function");
+ "remote_remove_hw_breakpoint: reached end of function");
}
/* Some targets are only capable of doing downloads, and afterwards
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 (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] =
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");
printf_filtered ("No loaded section named '%s'.\n", args);
}
-static int
-remote_query (int query_type, char *buf, char *outbuf, int *bufsiz)
+static LONGEST
+remote_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, void *readbuf, const void *writebuf,
+ ULONGEST offset, LONGEST len)
{
struct remote_state *rs = get_remote_state ();
int i;
char *buf2 = alloca (rs->remote_packet_size);
char *p2 = &buf2[0];
+ char query_type;
- if (!bufsiz)
- error ("null pointer to remote bufer size specified");
+ /* Only handle reads. */
+ if (writebuf != NULL || readbuf == NULL)
+ return -1;
- /* 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 < (rs->remote_packet_size))
+ /* Map pre-existing objects onto letters. DO NOT do this for new
+ objects!!! Instead specify new query packets. */
+ switch (object)
{
- *bufsiz = (rs->remote_packet_size);
+ case TARGET_OBJECT_KOD:
+ query_type = 'K';
+ break;
+ case TARGET_OBJECT_AVR:
+ query_type = 'R';
+ break;
+
+ case TARGET_OBJECT_AUXV:
+ if (remote_protocol_qPart_auxv.support != PACKET_DISABLE)
+ {
+ unsigned int total = 0;
+ while (len > 0)
+ {
+ LONGEST n = min ((rs->remote_packet_size - 2) / 2, len);
+ snprintf (buf2, rs->remote_packet_size,
+ "qPart:auxv:read::%s,%s",
+ phex_nz (offset, sizeof offset),
+ phex_nz (n, sizeof n));
+ i = putpkt (buf2);
+ if (i < 0)
+ return total > 0 ? total : i;
+ buf2[0] = '\0';
+ getpkt (buf2, rs->remote_packet_size, 0);
+ if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK)
+ return total > 0 ? total : -1;
+ if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0')
+ break; /* Got EOF indicator. */
+ /* Got some data. */
+ i = hex2bin (buf2, readbuf, len);
+ if (i > 0)
+ {
+ readbuf = (void *) ((char *) readbuf + i);
+ offset += i;
+ len -= i;
+ total += i;
+ }
+ }
+ return total;
+ }
+ return -1;
+
+ default:
return -1;
}
+ /* Note: a zero OFFSET and LEN can be used to query the minimum
+ buffer size. */
+ if (offset == 0 && len == 0)
+ return (rs->remote_packet_size);
+ /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is
+ not large enough let the caller. */
+ if (len < (rs->remote_packet_size))
+ return -1;
+ len = rs->remote_packet_size;
+
/* 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';
+ gdb_assert (annex != NULL);
+ gdb_assert (readbuf != NULL);
*p2++ = 'q';
*p2++ = query_type;
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 < ((rs->remote_packet_size) - 8)))
+ while (annex[i] && (i < ((rs->remote_packet_size) - 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];
+ /* Bad caller may have sent forbidden characters. */
+ gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#');
+ *p2++ = annex[i];
i++;
}
- *p2 = buf[i];
-
- if (buf[i])
- error ("query larger than available buffer");
+ *p2 = '\0';
+ gdb_assert (annex[i] == '\0');
i = putpkt (buf2);
if (i < 0)
return i;
- getpkt (outbuf, *bufsiz, 0);
+ getpkt (readbuf, len, 0);
- return 0;
+ return strlen (readbuf);
}
static void
remote_ops.to_open = remote_open;
remote_ops.to_close = remote_close;
remote_ops.to_detach = remote_detach;
+ remote_ops.to_disconnect = remote_disconnect;
remote_ops.to_resume = remote_resume;
remote_ops.to_wait = remote_wait;
remote_ops.to_fetch_registers = remote_fetch_registers;
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_stopped_by_watchpoint = remote_stopped_by_watchpoint;
+ remote_ops.to_stopped_data_address = remote_stopped_data_address;
+ remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
+ remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
+ remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
+ remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
+ remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
remote_ops.to_kill = remote_kill;
remote_ops.to_load = generic_load;
remote_ops.to_mourn_inferior = remote_mourn;
remote_ops.to_pid_to_str = remote_pid_to_str;
remote_ops.to_extra_thread_info = remote_threads_extra_info;
remote_ops.to_stop = remote_stop;
- remote_ops.to_query = remote_query;
+ remote_ops.to_xfer_partial = remote_xfer_partial;
remote_ops.to_rcmd = remote_rcmd;
remote_ops.to_stratum = process_stratum;
remote_ops.to_has_all_memory = 1;
extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
}
-/*
- * Command: info remote-process
- *
- * This implements Cisco's version of the "info proc" command.
- *
- * This query allows the target stub to return an arbitrary string
- * (or strings) giving arbitrary information about the target process.
- * This is optional; the target stub isn't required to implement it.
- *
- * Syntax: qfProcessInfo request first string
- * qsProcessInfo request subsequent string
- * reply: 'O'<hex-encoded-string>
- * 'l' last reply (empty)
- */
-
-static void
-remote_info_process (char *args, int from_tty)
-{
- 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, (rs->remote_packet_size), 0);
- if (buf[0] == 0)
- return; /* Silently: target does not support this feature. */
-
- if (buf[0] == 'E')
- error ("info proc: target error.");
-
- while (buf[0] == 'O') /* Capitol-O packet */
- {
- remote_console_output (&buf[1]);
- putpkt ("qsProcessInfo");
- getpkt (buf, (rs->remote_packet_size), 0);
- }
-}
-
-/*
- * Target Cisco
- */
-
-static void
-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).");
-
- /* See FIXME above */
- wait_forever_enabled_p = 1;
-
- target_preopen (from_tty);
-
- unpush_target (&remote_cisco_ops);
-
- remote_desc = serial_open (name);
- if (!remote_desc)
- perror_with_name (name);
-
- /*
- * If a baud rate was specified on the gdb command line it will
- * be greater than the initial value of -1. If it is, use it otherwise
- * default to 9600
- */
-
- baud_rate = (baud_rate > 0) ? baud_rate : 9600;
- if (serial_setbaudrate (remote_desc, baud_rate))
- {
- serial_close (remote_desc);
- perror_with_name (name);
- }
-
- serial_raw (remote_desc);
-
- /* If there is something sitting in the buffer we might take it as a
- response to a command, which would be bad. */
- serial_flush_input (remote_desc);
-
- if (from_tty)
- {
- puts_filtered ("Remote debugging using ");
- puts_filtered (name);
- puts_filtered ("\n");
- }
-
- remote_cisco_mode = 1;
-
- push_target (&remote_cisco_ops); /* Switch to using cisco target now */
-
- init_all_packet_configs ();
-
- general_thread = -2;
- continue_thread = -2;
-
- /* Probe for ability to use "ThreadInfo" query, as required. */
- use_threadinfo_query = 1;
- use_threadextra_query = 1;
-
- /* 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_ptid = pid_to_ptid (MAGIC_NULL_PID);
-
- /* Start the remote connection; if error (0), discard this target. */
-
- if (!catch_errors (remote_start_remote_dummy, (char *) 0,
- "Couldn't establish connection to remote target\n",
- RETURN_MASK_ALL))
- {
- pop_target ();
- return;
- }
-}
-
-static void
-remote_cisco_close (int quitting)
-{
- remote_cisco_mode = 0;
- remote_close (quitting);
-}
-
-static void
-remote_cisco_mourn (void)
-{
- remote_mourn_1 (&remote_cisco_ops);
-}
-
-enum
-{
- READ_MORE,
- FATAL_ERROR,
- ENTER_DEBUG,
- DISCONNECT_TELNET
-}
-minitelnet_return;
-
-/* 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;
-extern int quit_flag;
-
-static int
-readsocket (void)
-{
- int data;
-
- /* Loop until the socket doesn't have any more data */
-
- while ((data = readchar (0)) >= 0)
- {
- /* Check for the escape sequence */
- if (data == '|')
- {
- /* If this is the fourth escape, get out */
- if (++escape_count == 4)
- {
- return ENTER_DEBUG;
- }
- else
- { /* This is a '|', but not the fourth in a row.
- Continue without echoing it. If it isn't actually
- one of four in a row, it'll be echoed later. */
- continue;
- }
- }
- else
- /* Not a '|' */
- {
- /* Ensure any pending '|'s are flushed. */
-
- for (; escape_count > 0; escape_count--)
- putchar ('|');
- }
-
- if (data == '\r') /* If this is a return character, */
- continue; /* - just supress it. */
-
- if (echo_check != -1) /* Check for echo of user input. */
- {
- if (tty_input[echo_check] == data)
- {
- gdb_assert (echo_check <= sizeof (tty_input));
- echo_check++; /* Character matched user input: */
- continue; /* Continue without echoing it. */
- }
- else if ((data == '\n') && (tty_input[echo_check] == '\r'))
- { /* End of the line (and of echo checking). */
- echo_check = -1; /* No more echo supression */
- continue; /* Continue without echoing. */
- }
- else
- { /* Failed check for echo of user input.
- We now have some suppressed output to flush! */
- int j;
-
- for (j = 0; j < echo_check; j++)
- putchar (tty_input[j]);
- echo_check = -1;
- }
- }
- putchar (data); /* Default case: output the char. */
- }
-
- if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */
- return READ_MORE; /* Try to read some more */
- else
- return FATAL_ERROR; /* Trouble, bail out */
-}
-
-static int
-readtty (void)
-{
- int tty_bytecount;
-
- /* First, read a buffer full from the terminal */
- tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1);
- if (tty_bytecount == -1)
- {
- perror ("readtty: read failed");
- return FATAL_ERROR;
- }
-
- /* Remove a quoted newline. */
- if (tty_input[tty_bytecount - 1] == '\n' &&
- tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */
- {
- tty_input[--tty_bytecount] = 0; /* remove newline */
- tty_input[--tty_bytecount] = 0; /* remove backslash */
- }
-
- /* Turn trailing newlines into returns */
- if (tty_input[tty_bytecount - 1] == '\n')
- tty_input[tty_bytecount - 1] = '\r';
-
- /* If the line consists of a ~, enter debugging mode. */
- if ((tty_input[0] == '~') && (tty_bytecount == 2))
- return ENTER_DEBUG;
-
- /* Make this a zero terminated string and write it out */
- tty_input[tty_bytecount] = 0;
- if (serial_write (remote_desc, tty_input, tty_bytecount))
- {
- perror_with_name ("readtty: write failed");
- return FATAL_ERROR;
- }
-
- return READ_MORE;
-}
-
-static int
-minitelnet (void)
-{
- fd_set input; /* file descriptors for select */
- int tablesize; /* max number of FDs for select */
- int status;
- int quit_count = 0;
-
- extern int escape_count; /* global shared by readsocket */
- extern int echo_check; /* ditto */
-
- escape_count = 0;
- echo_check = -1;
-
- tablesize = 8 * sizeof (input);
-
- for (;;)
- {
- /* Check for anything from our socket - doesn't block. Note that
- this must be done *before* the select as there may be
- buffered I/O waiting to be processed. */
-
- if ((status = readsocket ()) == FATAL_ERROR)
- {
- error ("Debugging terminated by communications error");
- }
- else if (status != READ_MORE)
- {
- return (status);
- }
-
- fflush (stdout); /* Flush output before blocking */
-
- /* Now block on more socket input or TTY input */
-
- FD_ZERO (&input);
- FD_SET (fileno (stdin), &input);
- FD_SET (deprecated_serial_fd (remote_desc), &input);
-
- status = select (tablesize, &input, 0, 0, 0);
- if ((status == -1) && (errno != EINTR))
- {
- error ("Communications error on select %d", errno);
- }
-
- /* Handle Control-C typed */
-
- if (quit_flag)
- {
- if ((++quit_count) == 2)
- {
- if (query ("Interrupt GDB? "))
- {
- printf_filtered ("Interrupted by user.\n");
- return_to_top_level (RETURN_QUIT);
- }
- quit_count = 0;
- }
- quit_flag = 0;
-
- if (remote_break)
- serial_send_break (remote_desc);
- else
- serial_write (remote_desc, "\003", 1);
-
- continue;
- }
-
- /* Handle console input */
-
- if (FD_ISSET (fileno (stdin), &input))
- {
- quit_count = 0;
- echo_check = 0;
- status = readtty ();
- if (status == READ_MORE)
- continue;
-
- return status; /* telnet session ended */
- }
- }
-}
-
-static ptid_t
-remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status)
-{
- if (minitelnet () != ENTER_DEBUG)
- {
- error ("Debugging session terminated by protocol error");
- }
- putpkt ("?");
- return remote_wait (ptid, status);
-}
-
-static void
-init_remote_cisco_ops (void)
-{
- remote_cisco_ops.to_shortname = "cisco";
- remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol";
- remote_cisco_ops.to_doc =
- "Use a remote machine via TCP, using a cisco-specific protocol.\n\
-Specify the serial device it is connected to (e.g. host:2020).";
- remote_cisco_ops.to_open = remote_cisco_open;
- remote_cisco_ops.to_close = remote_cisco_close;
- remote_cisco_ops.to_detach = remote_detach;
- remote_cisco_ops.to_resume = remote_resume;
- remote_cisco_ops.to_wait = remote_cisco_wait;
- remote_cisco_ops.to_fetch_registers = remote_fetch_registers;
- remote_cisco_ops.to_store_registers = remote_store_registers;
- remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store;
- remote_cisco_ops.to_xfer_memory = remote_xfer_memory;
- remote_cisco_ops.to_files_info = remote_files_info;
- remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint;
- remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint;
- remote_cisco_ops.to_kill = remote_kill;
- remote_cisco_ops.to_load = generic_load;
- remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn;
- remote_cisco_ops.to_thread_alive = remote_thread_alive;
- remote_cisco_ops.to_find_new_threads = remote_threads_info;
- remote_cisco_ops.to_pid_to_str = remote_pid_to_str;
- remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info;
- remote_cisco_ops.to_stratum = process_stratum;
- remote_cisco_ops.to_has_all_memory = 1;
- remote_cisco_ops.to_has_memory = 1;
- remote_cisco_ops.to_has_stack = 1;
- remote_cisco_ops.to_has_registers = 1;
- remote_cisco_ops.to_has_execution = 1;
- remote_cisco_ops.to_magic = OPS_MAGIC;
-}
-
static int
remote_can_async_p (void)
{
Specify the serial device it is connected to (e.g. /dev/ttya).";
remote_async_ops.to_open = remote_async_open;
remote_async_ops.to_close = remote_close;
- remote_async_ops.to_detach = remote_async_detach;
+ remote_async_ops.to_detach = remote_detach;
+ remote_async_ops.to_disconnect = remote_disconnect;
remote_async_ops.to_resume = remote_async_resume;
remote_async_ops.to_wait = remote_async_wait;
remote_async_ops.to_fetch_registers = remote_fetch_registers;
remote_async_ops.to_files_info = remote_files_info;
remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint;
remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint;
+ remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
+ remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
+ remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
+ remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint;
+ remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint;
+ remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
+ remote_async_ops.to_stopped_data_address = remote_stopped_data_address;
remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior;
remote_async_ops.to_terminal_ours = remote_async_terminal_ours;
remote_async_ops.to_kill = remote_async_kill;
remote_async_ops.to_pid_to_str = remote_pid_to_str;
remote_async_ops.to_extra_thread_info = remote_threads_extra_info;
remote_async_ops.to_stop = remote_stop;
- remote_async_ops.to_query = remote_query;
+ remote_async_ops.to_xfer_partial = remote_xfer_partial;
remote_async_ops.to_rcmd = remote_rcmd;
remote_async_ops.to_stratum = process_stratum;
remote_async_ops.to_has_all_memory = 1;
static void
show_remote_cmd (char *args, int from_tty)
{
-
- show_remote_protocol_Z_packet_cmd (args, from_tty);
- show_remote_protocol_e_packet_cmd (args, from_tty);
- show_remote_protocol_E_packet_cmd (args, from_tty);
- show_remote_protocol_P_packet_cmd (args, from_tty);
- show_remote_protocol_qSymbol_packet_cmd (args, from_tty);
- show_remote_protocol_binary_download_cmd (args, from_tty);
+ /* FIXME: cagney/2002-06-15: This function should iterate over
+ remote_show_cmdlist for a list of sub commands to show. */
+ show_remote_protocol_Z_packet_cmd (args, from_tty, NULL);
+ show_remote_protocol_e_packet_cmd (args, from_tty, NULL);
+ show_remote_protocol_E_packet_cmd (args, from_tty, NULL);
+ show_remote_protocol_P_packet_cmd (args, from_tty, NULL);
+ show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL);
+ show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL);
+ show_remote_protocol_binary_download_cmd (args, from_tty, NULL);
+ show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL);
}
static void
struct cmd_list_element *tmpcmd;
/* architecture specific data */
- remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state,
- free_remote_state);
+ remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state);
/* Old tacky stuff. NOTE: This comes after the remote protocol so
that the remote protocol has been initialized. */
- register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL);
- register_gdbarch_swap (&remote_address_size,
- sizeof (&remote_address_size), NULL);
- register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data);
+ DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size);
+ deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data);
init_remote_ops ();
add_target (&remote_ops);
init_extended_async_remote_ops ();
add_target (&extended_async_remote_ops);
- init_remote_cisco_ops ();
- add_target (&remote_cisco_ops);
-
/* Hook into new objfile notification. */
remote_new_objfile_chain = target_new_objfile_hook;
target_new_objfile_hook = remote_new_objfile;
terminating `#' character and checksum.",
&maintenancelist);
- add_show_from_set
- (add_set_boolean_cmd ("remotebreak", no_class, &remote_break,
- "Set whether to send break if interrupted.\n",
- &setlist),
- &showlist);
+ add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break,
+ "Set whether to send break if interrupted.\n",
+ "Show whether to send break if interrupted.\n",
+ NULL, NULL,
+ &setlist, &showlist);
/* Install commands for configuring memory read/write packets. */
"Show the maximum number of bytes per memory-read packet.\n",
&remote_show_cmdlist);
+ add_setshow_cmd ("hardware-watchpoint-limit", no_class,
+ var_zinteger, &remote_hw_watchpoint_limit, "\
+Set the maximum number of target hardware watchpoints.\n\
+Specify a negative limit for unlimited.", "\
+Show the maximum number of target hardware watchpoints.\n",
+ NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist);
+ add_setshow_cmd ("hardware-breakpoint-limit", no_class,
+ var_zinteger, &remote_hw_breakpoint_limit, "\
+Set the maximum number of target hardware breakpoints.\n\
+Specify a negative limit for unlimited.", "\
+Show the maximum number of target hardware breakpoints.\n",
+ NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist);
+
add_show_from_set
(add_set_cmd ("remoteaddresssize", class_obscure,
var_integer, (char *) &remote_address_size,
&showlist);
#endif
- add_info ("remote-process", remote_info_process,
- "Query the remote system for process info.");
+ add_packet_config_cmd (&remote_protocol_vcont,
+ "vCont", "verbose-resume",
+ set_remote_protocol_vcont_packet_cmd,
+ show_remote_protocol_vcont_packet_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist,
+ 0);
add_packet_config_cmd (&remote_protocol_qSymbol,
"qSymbol", "symbol-lookup",
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 = 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 = AUTO_BOOLEAN_FALSE;
+ update_packet_config (&remote_protocol_E);
add_packet_config_cmd (&remote_protocol_P,
"P", "set-register",
&remote_set_cmdlist, &remote_show_cmdlist,
0);
+ add_packet_config_cmd (&remote_protocol_qPart_auxv,
+ "qPart_auxv", "read-aux-vector",
+ set_remote_protocol_qPart_auxv_packet_cmd,
+ show_remote_protocol_qPart_auxv_packet_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist,
+ 0);
+
/* Keep the old ``set remote Z-packet ...'' working. */
- tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure,
- &remote_Z_packet_detect,
- "\
-Set use of remote protocol `Z' packets", &remote_set_cmdlist);
- tmpcmd->function.sfunc = 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);
+ add_setshow_auto_boolean_cmd ("Z-packet", class_obscure,
+ &remote_Z_packet_detect, "\
+Set use of remote protocol `Z' packets",
+ "Show use of remote protocol `Z' packets ",
+ set_remote_protocol_Z_packet_cmd,
+ show_remote_protocol_Z_packet_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist);
+
+ /* Eventually initialize fileio. See fileio.c */
+ initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
}
projects / deliverable / binutils-gdb.git / blobdiff