/* Remote target communications for serial-line targets in custom GDB protocol
- Copyright 1988, 91, 92, 93, 94, 95, 96, 97, 1998
+ Copyright 1988, 91, 92, 93, 94, 95, 96, 97, 98, 1999
Free Software Foundation, Inc.
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-/* Remote communication protocol.
-
- A debug packet whose contents are <data>
- is encapsulated for transmission in the form:
-
- $ <data> # CSUM1 CSUM2
-
- <data> must be ASCII alphanumeric and cannot include characters
- '$' or '#'. If <data> starts with two characters followed by
- ':', then the existing stubs interpret this as a sequence number.
-
- CSUM1 and CSUM2 are ascii hex representation of an 8-bit
- checksum of <data>, the most significant nibble is sent first.
- the hex digits 0-9,a-f are used.
-
- Receiver responds with:
-
- + - if CSUM is correct and ready for next packet
- - - if CSUM is incorrect
-
- <data> is as follows:
- Most values are encoded in ascii hex digits. Signal numbers are according
- to the numbering in target.h.
-
- Request Packet
-
- set thread Hct... Set thread for subsequent operations.
- c = 'c' for thread used in step and
- continue; t... can be -1 for all
- threads.
- c = 'g' for thread used in other
- operations. If zero, pick a thread,
- any thread.
- reply OK for success
- ENN for an error.
-
- read registers g
- reply XX....X Each byte of register data
- is described by two hex digits.
- Registers are in the internal order
- for GDB, and the bytes in a register
- are in the same order the machine uses.
- or ENN for an error.
-
- write regs GXX..XX Each byte of register data
- is described by two hex digits.
- reply OK for success
- ENN for an error
-
- write reg Pn...=r... Write register n... with value r...,
- which contains two hex digits for each
- byte in the register (target byte
- order).
- reply OK for success
- ENN for an error
- (not supported by all stubs).
-
- read mem mAA..AA,LLLL AA..AA is address, LLLL is length.
- reply XX..XX XX..XX is mem contents
- Can be fewer bytes than requested
- if able to read only part of the data.
- or ENN NN is errno
-
- write mem MAA..AA,LLLL:XX..XX
- AA..AA is address,
- LLLL is number of bytes,
- XX..XX is data
- reply OK for success
- ENN for an error (this includes the case
- where only part of the data was
- written).
-
- continue cAA..AA AA..AA is address to resume
- If AA..AA is omitted,
- resume at same address.
-
- step sAA..AA AA..AA is address to resume
- If AA..AA is omitted,
- resume at same address.
-
- continue with Csig;AA..AA Continue with signal sig (hex signal
- signal number). If ;AA..AA is omitted,
- resume at same address.
-
- step with Ssig;AA..AA Like 'C' but step not continue.
- signal
-
- last signal ? Reply the current reason for stopping.
- This is the same reply as is generated
- for step or cont : SAA where AA is the
- signal number.
-
- detach D Reply OK.
-
- There is no immediate reply to step or cont.
- The reply comes when the machine stops.
- It is SAA AA is the signal number.
-
- or... TAAn...:r...;n...:r...;n...:r...;
- AA = signal number
- n... = register number (hex)
- r... = register contents
- n... = `thread'
- r... = thread process ID. This is
- a hex integer.
- n... = other string not starting
- with valid hex digit.
- gdb should ignore this n,r pair
- and go on to the next. This way
- we can extend the protocol.
- or... WAA The process exited, and AA is
- the exit status. This is only
- applicable for certains sorts of
- targets.
- or... XAA The process terminated with signal
- AA.
- or... OXX..XX XX..XX is hex encoding of ASCII data. This
- can happen at any time while the
- program is running and the debugger
- should continue to wait for
- 'W', 'T', etc.
-
- thread alive TXX Find out if the thread XX is alive.
- reply OK thread is still alive
- ENN thread is dead
-
- remote restart RXX Restart the remote server
-
- extended ops ! Use the extended remote protocol.
- Sticky -- only needs to be set once.
-
- kill request k
-
- toggle debug d toggle debug flag (see 386 & 68k stubs)
- reset r reset -- see sparc stub.
- reserved <other> On other requests, the stub should
- ignore the request and send an empty
- response ($#<checksum>). This way
- we can extend the protocol and GDB
- can tell whether the stub it is
- talking to uses the old or the new.
- search tAA:PP,MM Search backwards starting at address
- AA for a match with pattern PP and
- mask MM. PP and MM are 4 bytes.
- Not supported by all stubs.
-
- general query qXXXX Request info about XXXX.
- general set QXXXX=yyyy Set value of XXXX to yyyy.
- query sect offs qOffsets Get section offsets. Reply is
- Text=xxx;Data=yyy;Bss=zzz
-
- Responses can be run-length encoded to save space. A '*' means that
- the next character is an ASCII encoding giving a repeat count which
- stands for that many repititions of the character preceding the '*'.
- The encoding is n+29, yielding a printable character where n >=3
- (which is where rle starts to win). Don't use an n > 126.
-
- So
- "0* " means the same as "0000". */
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* See the GDB User Guide for details of the GDB remote protocol. */
#include "defs.h"
#include "gdb_string.h"
+#include <ctype.h>
#include <fcntl.h>
#include "frame.h"
#include "inferior.h"
#include "symfile.h"
#include "target.h"
#include "wait.h"
-/*#include "terminal.h"*/
+/*#include "terminal.h" */
#include "gdbcmd.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "dcache.h"
+#include <ctype.h>
+#include <sys/time.h>
#ifdef USG
#include <sys/types.h>
#endif
+#include "event-loop.h"
+
#include <signal.h>
#include "serial.h"
/* Prototypes for local functions */
+static void initialize_sigint_signal_handler PARAMS ((void));
+static void handle_remote_sigint PARAMS ((int));
+static void handle_remote_sigint_twice PARAMS ((int));
+static void async_remote_interrupt PARAMS ((gdb_client_data));
+static void async_remote_interrupt_twice PARAMS ((gdb_client_data));
+
+static void set_extended_protocol PARAMS ((struct continuation_arg *));
+
+static void build_remote_gdbarch_data PARAMS ((void));
static int remote_write_bytes PARAMS ((CORE_ADDR memaddr,
char *myaddr, int len));
static int remote_read_bytes PARAMS ((CORE_ADDR memaddr,
char *myaddr, int len));
-static void remote_files_info PARAMS ((struct target_ops *ignore));
+static void remote_files_info PARAMS ((struct target_ops * ignore));
-static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char * myaddr,
+static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
int len, int should_write,
struct target_ops * target));
static void remote_resume PARAMS ((int pid, int step,
enum target_signal siggnal));
+static void remote_async_resume PARAMS ((int pid, int step,
+ enum target_signal siggnal));
static int remote_start_remote PARAMS ((PTR));
static void remote_open PARAMS ((char *name, int from_tty));
+static void remote_async_open PARAMS ((char *name, int from_tty));
static void extended_remote_open PARAMS ((char *name, int from_tty));
+static void extended_remote_async_open PARAMS ((char *name, int from_tty));
static void remote_open_1 PARAMS ((char *, int, struct target_ops *,
int extended_p));
+static void remote_async_open_1 PARAMS ((char *, int, struct target_ops *,
+ int extended_p));
static void remote_close PARAMS ((int quitting));
static void remote_store_registers PARAMS ((int regno));
static void remote_mourn PARAMS ((void));
+static void remote_async_mourn PARAMS ((void));
static void extended_remote_restart PARAMS ((void));
static void extended_remote_mourn PARAMS ((void));
static void extended_remote_create_inferior PARAMS ((char *, char *, char **));
+static void extended_remote_async_create_inferior PARAMS ((char *, char *, char **));
static void remote_mourn_1 PARAMS ((struct target_ops *));
static int readchar PARAMS ((int timeout));
static int remote_wait PARAMS ((int pid, struct target_waitstatus * status));
+static int remote_async_wait PARAMS ((int pid, struct target_waitstatus * status));
static void remote_kill PARAMS ((void));
+static void remote_async_kill PARAMS ((void));
static int tohex PARAMS ((int nib));
static void remote_detach PARAMS ((char *args, int from_tty));
+static void remote_async_detach PARAMS ((char *args, int from_tty));
static void remote_interrupt PARAMS ((int signo));
+static void remote_interrupt_twice PARAMS ((int signo));
+
static void interrupt_query PARAMS ((void));
static void set_thread PARAMS ((int, int));
static void init_extended_remote_ops PARAMS ((void));
+static void init_remote_cisco_ops PARAMS ((void));
+
+static struct target_ops remote_cisco_ops;
+
static void remote_stop PARAMS ((void));
static int ishex PARAMS ((int ch, int *val));
static int stubhex PARAMS ((int ch));
-static int remote_query PARAMS ((char, char *, char *, int *));
+static int remote_query PARAMS ((int /*char */ , char *, char *, int *));
static int hexnumstr PARAMS ((char *, ULONGEST));
static int stub_unpack_int PARAMS ((char *buff, int fieldlength));
-char *unpack_varlen_hex PARAMS ((char *buff, int *result));
-
-static char *unpack_nibble PARAMS ((char *buf, int *val));
-
-static char *pack_nibble PARAMS ((char *buf, int nibble));
-
-static char *pack_hex_byte PARAMS ((char *pkt, unsigned char byte));
-
-static char *unpack_byte PARAMS ((char *buf, int *value));
-
-static char *pack_int PARAMS ((char *buf, int value));
-
-static char *unpack_int PARAMS ((char *buf, int *value));
-
-static char *unpack_string PARAMS ((char *src, char *dest, int length));
-
-static char *pack_threadid PARAMS ((char *pkt, threadref *id));
-
-static char *unpack_threadid PARAMS ((char *inbuf, threadref *id));
-
-void int_to_threadref PARAMS ((threadref *id, int value));
-
-static int threadref_to_int PARAMS ((threadref *ref));
-
-static void copy_threadref PARAMS ((threadref *dest, threadref *src));
+static int remote_current_thread PARAMS ((int oldpid));
-static int threadmatch PARAMS ((threadref *dest, threadref *src));
+static void remote_find_new_threads PARAMS ((void));
-static char *pack_threadinfo_request PARAMS ((char *pkt, int mode,
- threadref *id));
+static void record_currthread PARAMS ((int currthread));
-static int remote_unpack_thread_info_response PARAMS ((char *pkt,
- threadref *expectedref,
- struct gdb_ext_thread_info *info));
+/* exported functions */
+extern int fromhex PARAMS ((int a));
-static int remote_get_threadinfo PARAMS ((threadref *threadid,
- int fieldset, /*TAG mask */
- struct gdb_ext_thread_info *info));
+extern void getpkt PARAMS ((char *buf, int forever));
-static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref *ref,
- int selection,
- struct gdb_ext_thread_info *info));
+extern int putpkt PARAMS ((char *buf));
-static char *pack_threadlist_request PARAMS ((char *pkt, int startflag,
- int threadcount,
- threadref *nextthread));
+static int putpkt_binary PARAMS ((char *buf, int cnt));
-static int parse_threadlist_response PARAMS ((char *pkt,
- int result_limit,
- threadref *original_echo,
- threadref *resultlist,
- int *doneflag));
+void remote_console_output PARAMS ((char *));
-static int remote_get_threadlist PARAMS ((int startflag,
- threadref *nextthread,
- int result_limit,
- int *done,
- int *result_count,
- threadref *threadlist));
+static void check_binary_download PARAMS ((CORE_ADDR addr));
-typedef int (*rmt_thread_action) (threadref *ref, void *context);
+struct packet_config;
-static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction,
- void *context, int looplimit));
+static void show_packet_config_cmd PARAMS ((struct packet_config * config));
-static int remote_newthread_step PARAMS ((threadref *ref, void *context));
+static void set_packet_config_cmd PARAMS ((struct packet_config * config,
+ struct cmd_list_element * c));
-static int remote_current_thread PARAMS ((int oldpid));
+static void add_packet_config_cmd PARAMS ((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),
+ struct cmd_list_element **setlist,
+ struct cmd_list_element **showlist));
-int remote_find_new_threads PARAMS ((void));
+static void init_packet_config PARAMS ((struct packet_config * config));
-static void record_currthread PARAMS ((int currthread));
+static void set_remote_protocol_P_packet_cmd PARAMS ((char *args,
+ int from_tty,
+ struct cmd_list_element * c));
-static void init_remote_threads PARAMS ((void));
+static void show_remote_protocol_P_packet_cmd PARAMS ((char *args,
+ int from_tty));
-/* exported functions */
+static void set_remote_protocol_Z_packet_cmd PARAMS ((char *args,
+ int from_tty,
+ struct cmd_list_element * c));
-extern int fromhex PARAMS ((int a));
+static void show_remote_protocol_Z_packet_cmd PARAMS ((char *args,
+ int from_tty));
-extern void getpkt PARAMS ((char *buf, int forever));
-extern int putpkt PARAMS ((char *buf));
-void remote_console_output PARAMS ((char *));
/* Define the target subroutine names */
static struct target_ops extended_remote_ops;
-static struct target_thread_vector remote_thread_vec;
+/* Temporary target ops. Just like the remote_ops and
+ extended_remote_ops, but with asynchronous support. */
+static struct target_ops remote_async_ops;
+
+static struct target_ops extended_async_remote_ops;
/* This was 5 seconds, which is a long time to sit and wait.
Unless this is going though some terminal server or multiplexer or
static int remote_break;
-/* Has the user attempted to interrupt the target? If so, then offer
- the user the opportunity to bail out completely if he interrupts
- again. */
-static int interrupted_already = 0;
-
/* Descriptor for I/O to remote machine. Initialize it to NULL so that
remote_open knows that we don't have a file open when the program
starts. */
static serial_t remote_desc = NULL;
+/* This is set by the target (thru the 'S' message)
+ to denote that the target is in kernel mode. */
+static int cisco_kernel_mode = 0;
+
+/* Maximum number of bytes to read/write at once. The value here
+ is chosen to fill up a packet (the headers account for the 32). */
+#define MAXBUFBYTES(N) (((N)-32)/2)
+
/* Having this larger than 400 causes us to be incompatible with m68k-stub.c
and i386-stub.c. Normally, no one would notice because it only matters
for writing large chunks of memory (e.g. in downloads). Also, this needs
to be more than 400 if required to hold the registers (see below, where
we round it up based on REGISTER_BYTES). */
-#define PBUFSIZ 400
-
-/* Maximum number of bytes to read/write at once. The value here
- is chosen to fill up a packet (the headers account for the 32). */
-#define MAXBUFBYTES ((PBUFSIZ-32)/2)
-
/* Round up PBUFSIZ to hold all the registers, at least. */
-/* The blank line after the #if seems to be required to work around a
- bug in HP's PA compiler. */
-#if REGISTER_BYTES > MAXBUFBYTES
-
-#undef PBUFSIZ
-#define PBUFSIZ (REGISTER_BYTES * 2 + 32)
-#endif
+#define PBUFSIZ ((REGISTER_BYTES > MAXBUFBYTES (400)) \
+ ? (REGISTER_BYTES * 2 + 32) \
+ : 400)
/* This variable sets the number of bytes to be written to the target
targets need smaller values (perhaps because the receiving end
is slow). */
-static int remote_write_size = PBUFSIZ;
+static int remote_write_size;
/* 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
static int remote_register_buf_size = 0;
-/* Should we try the 'P' request? If this is set to one when the stub
- doesn't support 'P', the only consequence is some unnecessary traffic. */
-static int stub_supports_P = 1;
+/* Generic configuration support for packets the stub optionally
+ supports. Allows the user to specify the use of the packet as well
+ as allowing GDB to auto-detect support in the remote stub. */
+
+enum packet_support
+ {
+ PACKET_SUPPORT_UNKNOWN = 0,
+ PACKET_ENABLE,
+ PACKET_DISABLE
+ };
+
+enum packet_detect
+ {
+ PACKET_AUTO_DETECT = 0,
+ PACKET_MANUAL_DETECT
+ };
+
+struct packet_config
+ {
+ char *state;
+ char *name;
+ char *title;
+ enum packet_detect detect;
+ enum packet_support support;
+ };
+
+static char packet_support_auto[] = "auto";
+static char packet_enable[] = "enable";
+static char packet_disable[] = "disable";
+static char *packet_support_enums[] =
+{
+ packet_support_auto,
+ packet_enable,
+ packet_disable,
+ 0,
+};
+
+static void
+set_packet_config_cmd (config, c)
+ struct packet_config *config;
+ struct cmd_list_element *c;
+{
+ if (config->state == packet_enable)
+ {
+ config->detect = PACKET_MANUAL_DETECT;
+ config->support = PACKET_ENABLE;
+ }
+ else if (config->state == packet_disable)
+ {
+ config->detect = PACKET_MANUAL_DETECT;
+ config->support = PACKET_DISABLE;
+ }
+ else if (config->state == packet_support_auto)
+ {
+ config->detect = PACKET_AUTO_DETECT;
+ config->support = PACKET_SUPPORT_UNKNOWN;
+ }
+ else
+ internal_error ("Bad enum value");
+}
+
+static void
+show_packet_config_cmd (config)
+ struct packet_config *config;
+{
+ char *support = "internal-error";
+ switch (config->support)
+ {
+ case PACKET_ENABLE:
+ support = "enabled";
+ break;
+ case PACKET_DISABLE:
+ support = "disabled";
+ break;
+ case PACKET_SUPPORT_UNKNOWN:
+ support = "unknown";
+ break;
+ }
+ switch (config->detect)
+ {
+ case PACKET_AUTO_DETECT:
+ printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
+ config->name, config->title, support);
+ break;
+ case PACKET_MANUAL_DETECT:
+ printf_filtered ("Support for remote protocol `%s' (%s) is currently %s.\n",
+ config->name, config->title, support);
+ }
+}
+
+static void
+add_packet_config_cmd (config, name, title, set_func, show_func,
+ setlist, showlist)
+ struct packet_config *config;
+ char *name;
+ char *title;
+ void (*set_func) PARAMS ((char *args, int from_tty,
+ struct cmd_list_element * c));
+ void (*show_func) PARAMS ((char *name, int from_tty));
+ struct cmd_list_element **setlist;
+ struct cmd_list_element **showlist;
+{
+ struct cmd_list_element *c;
+ char *set_doc;
+ char *show_doc;
+ char *full_name;
+ config->name = name;
+ config->title = title;
+ asprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet",
+ name, title);
+ asprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet",
+ name, title);
+ asprintf (&full_name, "%s-packet", name);
+ c = add_set_enum_cmd (full_name,
+ class_obscure, packet_support_enums,
+ (char *) &config->state,
+ set_doc, setlist);
+ c->function.sfunc = set_func;
+ add_cmd (full_name, class_obscure, show_func, show_doc, showlist);
+}
+
+static void
+init_packet_config (config)
+ struct packet_config *config;
+{
+ switch (config->detect)
+ {
+ case PACKET_AUTO_DETECT:
+ config->support = PACKET_SUPPORT_UNKNOWN;
+ break;
+ case PACKET_MANUAL_DETECT:
+ /* let the user beware */
+ break;
+ }
+}
+
+/* Should we try the 'P' (set register) request? */
+
+static struct packet_config remote_protocol_P;
+
+static void
+set_remote_protocol_P_packet_cmd (args, from_tty, c)
+ char *args;
+ int from_tty;
+ struct cmd_list_element *c;
+{
+ set_packet_config_cmd (&remote_protocol_P, c);
+}
+
+static void
+show_remote_protocol_P_packet_cmd (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ show_packet_config_cmd (&remote_protocol_P);
+}
+
+/* Should we try the 'Z' (set breakpoint) request? */
+
+static struct packet_config remote_protocol_Z;
+
+static void
+set_remote_protocol_Z_packet_cmd (args, from_tty, c)
+ char *args;
+ int from_tty;
+ struct cmd_list_element *c;
+{
+ set_packet_config_cmd (&remote_protocol_Z, c);
+}
+
+static void
+show_remote_protocol_Z_packet_cmd (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ show_packet_config_cmd (&remote_protocol_Z);
+}
+
+/* Should we try the 'X' (remote binary download) packet?
+
+ This variable (available to the user via "set remote X-packet")
+ dictates whether downloads are sent in binary (via the 'X' packet).
+ We assume that the stub can, and attempt to do it. This will be
+ cleared if the stub does not understand it. This switch is still
+ needed, though in cases when the packet is supported in the stub,
+ but the connection does not allow it (i.e., 7-bit serial connection
+ only). */
+
+static struct packet_config remote_protocol_binary_download;
+
+static void
+set_remote_protocol_binary_download_cmd (char *args,
+ int from_tty,
+ struct cmd_list_element *c)
+{
+ set_packet_config_cmd (&remote_protocol_binary_download, c);
+}
+
+static void
+show_remote_protocol_binary_download_cmd (char *args,
+ int from_tty)
+{
+ show_packet_config_cmd (&remote_protocol_binary_download);
+}
+
+
+/* Tokens for use by the asynchronous signal handlers for SIGINT */
+PTR sigint_remote_twice_token;
+PTR sigint_remote_token;
/* These are pointers to hook functions that may be set in order to
modify resume/wait behavior for a particular architecture. */
void (*target_resume_hook) PARAMS ((void));
void (*target_wait_loop_hook) PARAMS ((void));
-
\f
+
/* These are the threads which we last sent to the remote system.
-1 for all or -2 for not sent yet. */
static int general_thread;
-static int cont_thread;
+static int continue_thread;
/* Call this function as a result of
1) A halt indication (T packet) containing a thread id
record_currthread (currthread)
int currthread;
{
-#if 0 /* target_wait must not modify inferior_pid! */
- inferior_pid = currthread;
-#endif
general_thread = currthread;
-#if 0 /* setting cont_thread has a different meaning
- from having the target report its thread id. */
- cont_thread = currthread;
-#endif
+
/* If this is a new thread, add it to GDB's thread list.
If we leave it up to WFI to do this, bad things will happen. */
if (!in_thread_list (currthread))
- add_thread (currthread);
+ {
+ add_thread (currthread);
+ printf_filtered ("[New %s]\n", target_pid_to_str (currthread));
+ }
}
#define MAGIC_NULL_PID 42000
int th;
int gen;
{
- char buf[PBUFSIZ];
- int state = gen ? general_thread : cont_thread;
+ char *buf = alloca (PBUFSIZ);
+ int state = gen ? general_thread : continue_thread;
if (state == th)
return;
if (gen)
general_thread = th;
else
- cont_thread = th;
+ continue_thread = th;
}
\f
/* Return nonzero if the thread TH is still alive on the remote system. */
static int
-remote_thread_alive (th)
- int th;
+remote_thread_alive (tid)
+ int tid;
{
- char buf[PBUFSIZ];
+ char buf[16];
- buf[0] = 'T';
- if (th < 0)
- sprintf (&buf[1], "-%08x", -th);
+ if (tid < 0)
+ sprintf (buf, "T-%08x", -tid);
else
- sprintf (&buf[1], "%08x", th);
+ sprintf (buf, "T%08x", tid);
putpkt (buf);
getpkt (buf, 0);
return (buf[0] == 'O' && buf[1] == 'K');
remote protocol in general. There is a matching unit test module
in libstub. */
+#define OPAQUETHREADBYTES 8
+
+/* a 64 bit opaque identifier */
+typedef unsigned char threadref[OPAQUETHREADBYTES];
+
+/* WARNING: This threadref data structure comes from the remote O.S., libstub
+ protocol encoding, and remote.c. it is not particularly changable */
+
+/* Right now, the internal structure is int. We want it to be bigger.
+ Plan to fix this.
+ */
+
+typedef int gdb_threadref; /* internal GDB thread reference */
+
+/* gdb_ext_thread_info is an internal GDB data structure which is
+ equivalint to the reply of the remote threadinfo packet */
+
+struct gdb_ext_thread_info
+ {
+ threadref threadid; /* External form of thread reference */
+ int active; /* Has state interesting to GDB? , regs, stack */
+ char display[256]; /* Brief state display, name, blocked/syspended */
+ char shortname[32]; /* To be used to name threads */
+ char more_display[256]; /* Long info, statistics, queue depth, whatever */
+ };
+
+/* The volume of remote transfers can be limited by submitting
+ a mask containing bits specifying the desired information.
+ Use a union of these values as the 'selection' parameter to
+ get_thread_info. FIXME: Make these TAG names more thread specific.
+ */
+
+#define TAG_THREADID 1
+#define TAG_EXISTS 2
+#define TAG_DISPLAY 4
+#define TAG_THREADNAME 8
+#define TAG_MOREDISPLAY 16
+
#define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
+char *unpack_varlen_hex PARAMS ((char *buff, int *result));
+
+static char *unpack_nibble PARAMS ((char *buf, int *val));
+
+static char *pack_nibble PARAMS ((char *buf, int nibble));
+
+static char *pack_hex_byte PARAMS ((char *pkt, int /*unsigned char */ byte));
+
+static char *unpack_byte PARAMS ((char *buf, int *value));
+
+static char *pack_int PARAMS ((char *buf, int value));
+
+static char *unpack_int PARAMS ((char *buf, int *value));
+
+static char *unpack_string PARAMS ((char *src, char *dest, int length));
+
+static char *pack_threadid PARAMS ((char *pkt, threadref * id));
+
+static char *unpack_threadid PARAMS ((char *inbuf, threadref * id));
+
+void int_to_threadref PARAMS ((threadref * id, int value));
+
+static int threadref_to_int PARAMS ((threadref * ref));
+
+static void copy_threadref PARAMS ((threadref * dest, threadref * src));
+
+static int threadmatch PARAMS ((threadref * dest, threadref * src));
+
+static char *pack_threadinfo_request PARAMS ((char *pkt, int mode,
+ threadref * id));
+
+static int remote_unpack_thread_info_response PARAMS ((char *pkt,
+ threadref * expectedref,
+ struct gdb_ext_thread_info * info));
+
+
+static int remote_get_threadinfo PARAMS ((threadref * threadid,
+ int fieldset, /*TAG mask */
+ struct gdb_ext_thread_info * info));
+
+static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref * ref,
+ int selection,
+ struct gdb_ext_thread_info * info));
+
+static char *pack_threadlist_request PARAMS ((char *pkt, int startflag,
+ int threadcount,
+ threadref * nextthread));
+
+static int parse_threadlist_response PARAMS ((char *pkt,
+ int result_limit,
+ threadref * original_echo,
+ threadref * resultlist,
+ int *doneflag));
+
+static int remote_get_threadlist PARAMS ((int startflag,
+ threadref * nextthread,
+ int result_limit,
+ int *done,
+ int *result_count,
+ threadref * threadlist));
+
+typedef int (*rmt_thread_action) (threadref * ref, void *context);
+
+static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction,
+ void *context, int looplimit));
+
+static int remote_newthread_step PARAMS ((threadref * ref, void *context));
+
/* encode 64 bits in 16 chars of hex */
static const char hexchars[] = "0123456789abcdef";
static char *
pack_hex_byte (pkt, byte)
char *pkt;
- unsigned char byte;
+ int byte;
{
*pkt++ = hexchars[(byte >> 4) & 0xf];
*pkt++ = hexchars[(byte & 0xf)];
return buf + 8;
}
-#if 0 /* currently unused, uncomment when needed */
+#if 0 /* currently unused, uncomment when needed */
static char *pack_string PARAMS ((char *pkt, char *string));
static char *
}
/*
- threadid:1, # always request threadid
- context_exists:2,
- display:4,
- unique_name:8,
- more_display:16
-*/
+ threadid:1, # always request threadid
+ context_exists:2,
+ display:4,
+ unique_name:8,
+ more_display:16
+ */
/* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
/* Tagging the fields allows us to request specific fields and to
add more fields as time goes by */
-#define TAG_THREADID 1 /* Echo the thread identifier */
-#define TAG_EXISTS 2 /* Is this process defined enough to
- fetch registers and its stack */
-#define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
-#define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
-#define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
- the process*/
+#define TAG_THREADID 1 /* Echo the thread identifier */
+#define TAG_EXISTS 2 /* Is this process defined enough to
+ fetch registers and its stack */
+#define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
+#define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
+#define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
+ the process */
static int
remote_unpack_thread_info_response (pkt, expectedref, info)
int mask, length;
unsigned int tag;
threadref ref;
- char *limit = pkt + PBUFSIZ; /* plausable parsing limit */
+ char *limit = pkt + PBUFSIZ; /* plausable parsing limit */
int retval = 1;
/* info->threadid = 0; FIXME: implement zero_threadref */
/* Loop on tagged fields , try to bail if somthing goes wrong */
- while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */
+ while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */
{
pkt = unpack_int (pkt, &tag); /* tag */
pkt = unpack_byte (pkt, &length); /* length */
struct gdb_ext_thread_info *info;
{
int result;
- char threadinfo_pkt[PBUFSIZ];
+ char *threadinfo_pkt = alloca (PBUFSIZ);
pack_threadinfo_request (threadinfo_pkt, fieldset, threadid);
putpkt (threadinfo_pkt);
resultcount = 0;
/* Assume the 'q' and 'M chars have been stripped. */
- limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */
+ limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */
pkt = unpack_byte (pkt, &count); /* count field */
pkt = unpack_nibble (pkt, &done);
/* The first threadid is the argument threadid. */
{
static threadref echo_nextthread;
- char threadlist_packet[PBUFSIZ];
- char t_response[PBUFSIZ];
+ char *threadlist_packet = alloca (PBUFSIZ);
+ char *t_response = alloca (PBUFSIZ);
int result = 1;
/* Trancate result limit to be smaller than the packet size */
remote_current_thread (oldpid)
int oldpid;
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
putpkt ("qC");
getpkt (buf, 0);
return oldpid;
}
-int
+/* Find new threads for info threads command. */
+
+static void
remote_find_new_threads ()
{
- int ret;
-
- ret = remote_threadlist_iterator (remote_newthread_step, 0,
- CRAZY_MAX_THREADS);
+ remote_threadlist_iterator (remote_newthread_step, 0,
+ CRAZY_MAX_THREADS);
if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */
inferior_pid = remote_current_thread (inferior_pid);
- return ret;
}
-/* Initialize the thread vector which is used by threads.c */
-/* The thread stub is a package, it has an initializer */
-
static void
-init_remote_threads ()
+remote_threads_info (void)
{
- remote_thread_vec.find_new_threads = remote_find_new_threads;
- remote_thread_vec.get_thread_info = adapt_remote_get_threadinfo;
+ char *buf = alloca (PBUFSIZ);
+ char *bufp;
+ int tid;
+
+ if (remote_desc == 0) /* paranoia */
+ error ("Command can only be used when connected to the remote target.");
+
+ putpkt ("qfThreadInfo");
+ getpkt (bufp = buf, 0);
+ if (bufp[0] == '\0') /* q packet not recognized! */
+ { /* try old jmetzler method */
+ remote_find_new_threads ();
+ return;
+ }
+ else /* try new 'q' method */
+ while (*bufp++ == 'm') /* reply contains one or more TID */
+ {
+ do
+ {
+ tid = strtol (bufp, &bufp, 16);
+ if (tid != 0 && !in_thread_list (tid))
+ add_thread (tid);
+ }
+ while (*bufp++ == ','); /* comma-separated list */
+ putpkt ("qsThreadInfo");
+ getpkt (bufp = buf, 0);
+ }
}
-
\f
+
/* Restart the remote side; this is an extended protocol operation. */
static void
extended_remote_restart ()
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
/* Send the restart command; for reasons I don't understand the
remote side really expects a number after the "R". */
static void
get_offsets ()
{
- char buf[PBUFSIZ], *ptr;
+ char *buf = alloca (PBUFSIZ);
+ char *ptr;
int lose;
CORE_ADDR text_addr, data_addr, bss_addr;
struct section_offsets *offs;
if (symfile_objfile == NULL)
return;
- offs = (struct section_offsets *) alloca (sizeof (struct section_offsets)
- + symfile_objfile->num_sections
- * sizeof (offs->offsets));
- memcpy (offs, symfile_objfile->section_offsets,
- sizeof (struct section_offsets)
- + symfile_objfile->num_sections
- * sizeof (offs->offsets));
+ offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
+ memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
ANOFFSET (offs, SECT_OFF_TEXT) = text_addr;
objfile_relocate (symfile_objfile, offs);
}
-/* Stub for catch_errors. */
+/*
+ * 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_start_remote (dummy)
- PTR dummy;
+remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
+ text_offs, data_offs, bss_offs)
+ bfd_vma text_addr;
+ bfd_vma data_addr;
+ bfd_vma bss_addr;
+ bfd_signed_vma *text_offs;
+ bfd_signed_vma *data_offs;
+ bfd_signed_vma *bss_offs;
{
- immediate_quit = 1; /* Allow user to interrupt it */
-
- /* Ack any packet which the remote side has already sent. */
- SERIAL_WRITE (remote_desc, "+", 1);
+ bfd_vma text_base, data_base, bss_base;
+ struct minimal_symbol *start;
+ asection *sect;
+ bfd *abfd;
+ int len;
+ char *p;
- /* Let the stub know that we want it to return the thread. */
- set_thread (-1, 0);
+ if (symfile_objfile == NULL)
+ return -1; /* no can do nothin' */
- inferior_pid = remote_current_thread (inferior_pid);
+ start = lookup_minimal_symbol ("_start", NULL, NULL);
+ if (start == NULL)
+ return -1; /* Can't find "_start" symbol */
- get_offsets (); /* Get text, data & bss offsets */
+ data_base = bss_base = 0;
+ text_base = SYMBOL_VALUE_ADDRESS (start);
- putpkt ("?"); /* initiate a query from remote machine */
- immediate_quit = 0;
+ abfd = symfile_objfile->obfd;
+ for (sect = abfd->sections;
+ sect != 0;
+ sect = sect->next)
+ {
+ p = (unsigned char *) bfd_get_section_name (abfd, sect);
+ len = strlen (p);
+ if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */
+ if (data_base == 0 ||
+ data_base > bfd_get_section_vma (abfd, sect))
+ data_base = bfd_get_section_vma (abfd, sect);
+ if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */
+ if (bss_base == 0 ||
+ bss_base > bfd_get_section_vma (abfd, sect))
+ bss_base = bfd_get_section_vma (abfd, sect);
+ }
+ *text_offs = text_addr - text_base;
+ *data_offs = data_addr - data_base;
+ *bss_offs = bss_addr - bss_base;
+ if (remote_debug)
+ {
+ char tmp[128];
+
+ sprintf (tmp, "VMA: text = 0x");
+ sprintf_vma (tmp + strlen (tmp), text_addr);
+ sprintf (tmp + strlen (tmp), " data = 0x");
+ sprintf_vma (tmp + strlen (tmp), data_addr);
+ sprintf (tmp + strlen (tmp), " bss = 0x");
+ sprintf_vma (tmp + strlen (tmp), bss_addr);
+ fprintf_filtered (gdb_stdlog, tmp);
+ fprintf_filtered (gdb_stdlog,
+ "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
+ paddr_nz (*text_offs),
+ paddr_nz (*data_offs),
+ paddr_nz (*bss_offs));
+ }
- start_remote (); /* Initialize gdb process mechanisms */
- return 1;
+ return 0;
}
-/* Open a connection to a remote debugger.
- NAME is the filename used for communication. */
+/*
+ * Function: remote_cisco_objfile_relocate
+ *
+ * Relocate the symbol file for a remote target.
+ */
-static void
+void
+remote_cisco_objfile_relocate (text_off, data_off, bss_off)
+ bfd_signed_vma text_off;
+ bfd_signed_vma data_off;
+ bfd_signed_vma bss_off;
+{
+ struct section_offsets *offs;
+
+ if (text_off != 0 || data_off != 0 || bss_off != 0)
+ {
+ /* FIXME: This code assumes gdb-stabs.h is being used; it's
+ broken for xcoff, dwarf, sdb-coff, etc. But there is no
+ simple canonical representation for this stuff. */
+
+ offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
+ memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
+
+ ANOFFSET (offs, SECT_OFF_TEXT) = text_off;
+ ANOFFSET (offs, SECT_OFF_DATA) = data_off;
+ ANOFFSET (offs, SECT_OFF_BSS) = bss_off;
+
+ /* First call the standard objfile_relocate. */
+ objfile_relocate (symfile_objfile, offs);
+
+ /* Now we need to fix up the section entries already attached to
+ the exec target. These entries will control memory transfers
+ from the exec file. */
+
+ exec_set_section_offsets (text_off, data_off, bss_off);
+ }
+}
+
+/* Stub for catch_errors. */
+
+static int
+remote_start_remote_dummy (dummy)
+ char *dummy;
+{
+ start_remote (); /* Initialize gdb process mechanisms */
+ return 1;
+}
+
+static int
+remote_start_remote (dummy)
+ PTR dummy;
+{
+ immediate_quit = 1; /* Allow user to interrupt it */
+
+ /* Ack any packet which the remote side has already sent. */
+ SERIAL_WRITE (remote_desc, "+", 1);
+
+ /* Let the stub know that we want it to return the thread. */
+ set_thread (-1, 0);
+
+ inferior_pid = remote_current_thread (inferior_pid);
+
+ get_offsets (); /* Get text, data & bss offsets */
+
+ putpkt ("?"); /* initiate a query from remote machine */
+ immediate_quit = 0;
+
+ return remote_start_remote_dummy (dummy);
+}
+
+/* Open a connection to a remote debugger.
+ NAME is the filename used for communication. */
+
+static void
remote_open (name, from_tty)
char *name;
int from_tty;
remote_open_1 (name, from_tty, &remote_ops, 0);
}
+/* Just like remote_open, but with asynchronous support. */
+static void
+remote_async_open (name, from_tty)
+ char *name;
+ int from_tty;
+{
+ remote_async_open_1 (name, from_tty, &remote_async_ops, 0);
+}
+
/* Open a connection to a remote debugger using the extended
remote gdb protocol. NAME is the filename used for communication. */
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 */ );
+}
+
+/* Just like extended_remote_open, but with asynchronous support. */
+static void
+extended_remote_async_open (name, from_tty)
+ char *name;
+ int from_tty;
+{
+ remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ );
}
/* Generic code for opening a connection to a remote target. */
}
}
-
SERIAL_RAW (remote_desc);
/* If there is something sitting in the buffer we might take it as a
puts_filtered (name);
puts_filtered ("\n");
}
- push_target (target); /* Switch to using remote target now */
-
- /* The target vector does not have the thread functions in it yet,
- so we use this function to call back into the thread module and
- register the thread vector and its contained functions. */
- bind_target_thread_vector (&remote_thread_vec);
-
- /* Start out by trying the 'P' request to set registers. We set
- this each time that we open a new target so that if the user
- switches from one stub to another, we can (if the target is
- closed and reopened) cope. */
- stub_supports_P = 1;
+ push_target (target); /* Switch to using remote target now */
+ init_packet_config (&remote_protocol_P);
+ init_packet_config (&remote_protocol_Z);
+
general_thread = -2;
- cont_thread = -2;
+ continue_thread = -2;
+
+ /* Force remote_write_bytes to check whether target supports
+ binary downloading. */
+ init_packet_config (&remote_protocol_binary_download);
/* Without this, some commands which require an active target (such
as kill) won't work. This variable serves (at least) double duty
/* 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",
+ if (!catch_errors (remote_start_remote, NULL,
+ "Couldn't establish connection to remote target\n",
RETURN_MASK_ALL))
{
pop_target ();
if (extended_p)
{
/* tell the remote that we're using the extended protocol. */
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
putpkt ("!");
getpkt (buf, 0);
}
}
+/* Just like remote_open but with asynchronous support. */
+static void
+remote_async_open_1 (name, from_tty, target, extended_p)
+ char *name;
+ int from_tty;
+ struct target_ops *target;
+ int extended_p;
+{
+ if (name == 0)
+ error ("To open a remote debug connection, you need to specify what\n\
+serial device is attached to the remote system (e.g. /dev/ttya).");
+
+ target_preopen (from_tty);
+
+ unpush_target (target);
+
+ remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes);
+
+ remote_desc = SERIAL_OPEN (name);
+ if (!remote_desc)
+ perror_with_name (name);
+
+ if (baud_rate != -1)
+ {
+ if (SERIAL_SETBAUDRATE (remote_desc, baud_rate))
+ {
+ SERIAL_CLOSE (remote_desc);
+ perror_with_name (name);
+ }
+ }
+
+ SERIAL_RAW (remote_desc);
+
+ /* If there is something sitting in the buffer we might take it as a
+ response to a command, which would be bad. */
+ SERIAL_FLUSH_INPUT (remote_desc);
+
+ if (from_tty)
+ {
+ puts_filtered ("Remote debugging using ");
+ puts_filtered (name);
+ puts_filtered ("\n");
+ }
+
+ /* If running in asynchronous mode, register the target with the
+ event loop. Set things up so that when there is an event on the
+ file descriptor, the event loop will call fetch_inferior_event,
+ which will do the proper analysis to determine what happened. */
+ if (async_p)
+ add_file_handler (remote_desc->fd, fetch_inferior_event, 0);
+
+ push_target (target); /* Switch to using remote target now */
+
+ init_packet_config (&remote_protocol_P);
+ init_packet_config (&remote_protocol_Z);
+
+ general_thread = -2;
+ continue_thread = -2;
+
+ /* Force remote_write_bytes to check whether target supports
+ binary downloading. */
+ init_packet_config (&remote_protocol_binary_download);
+
+ /* If running asynchronously, set things up for telling the target
+ to use the extended protocol. This will happen only after the
+ target has been connected to, in fetch_inferior_event. */
+ if (extended_p && async_p)
+ add_continuation (set_extended_protocol, NULL);
+
+ /* Without this, some commands which require an active target (such
+ as kill) won't work. This variable serves (at least) double duty
+ as both the pid of the target process (if it has such), and as a
+ flag indicating that a target is active. These functions should
+ be split out into seperate variables, especially since GDB will
+ someday have a notion of debugging several processes. */
+
+ inferior_pid = MAGIC_NULL_PID;
+ /* Start the remote connection; if error (0), discard this target.
+ In particular, if the user quits, be sure to discard it
+ (we'd be in an inconsistent state otherwise). */
+ if (!catch_errors (remote_start_remote, NULL,
+ "Couldn't establish connection to remote target\n",
+ RETURN_MASK_ALL))
+ {
+ /* Unregister the file descriptor from the event loop. */
+ if (async_p)
+ delete_file_handler (remote_desc->fd);
+ pop_target ();
+ return;
+ }
+
+ if (!async_p)
+ {
+ if (extended_p)
+ {
+ /* tell the remote that we're using the extended protocol. */
+ char *buf = alloca (PBUFSIZ);
+ putpkt ("!");
+ getpkt (buf, 0);
+ }
+ }
+}
+
+/* This will be called by fetch_inferior_event, via the
+ cmd_continuation pointer, only after the target has stopped. */
+static void
+set_extended_protocol (arg)
+ struct continuation_arg *arg;
+{
+ /* tell the remote that we're using the extended protocol. */
+ char *buf = alloca (PBUFSIZ);
+ putpkt ("!");
+ getpkt (buf, 0);
+}
+
/* This takes a program previously attached to and detaches it. After
this is done, GDB can be used to debug some other program. We
better not have left any breakpoints in the target program or it'll
char *args;
int from_tty;
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
+
+ if (args)
+ error ("Argument given to \"detach\" when remotely debugging.");
+
+ /* Tell the remote target to detach. */
+ strcpy (buf, "D");
+ remote_send (buf);
+
+ pop_target ();
+ if (from_tty)
+ puts_filtered ("Ending remote debugging.\n");
+
+}
+
+/* Same as remote_detach, but with async support. */
+static void
+remote_async_detach (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ char *buf = alloca (PBUFSIZ);
if (args)
error ("Argument given to \"detach\" when remotely debugging.");
strcpy (buf, "D");
remote_send (buf);
+ /* Unregister the file descriptor from the event loop. */
+ if (async_p)
+ delete_file_handler (remote_desc->fd);
+
pop_target ();
if (from_tty)
puts_filtered ("Ending remote debugging.\n");
return a - 'a' + 10;
else if (a >= 'A' && a <= 'F')
return a - 'A' + 10;
- else
+ else
error ("Reply contains invalid hex digit %d", a);
}
int nib;
{
if (nib < 10)
- return '0'+nib;
+ return '0' + nib;
else
- return 'a'+nib-10;
+ return 'a' + nib - 10;
}
\f
/* Tell the remote machine to resume. */
int pid, step;
enum target_signal siggnal;
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
if (pid == -1)
set_thread (0, 0); /* run any thread */
if (siggnal != TARGET_SIGNAL_0)
{
buf[0] = step ? 'S' : 'C';
- buf[1] = tohex (((int)siggnal >> 4) & 0xf);
- buf[2] = tohex ((int)siggnal & 0xf);
+ buf[1] = tohex (((int) siggnal >> 4) & 0xf);
+ buf[2] = tohex ((int) siggnal & 0xf);
+ buf[3] = '\0';
+ }
+ else
+ strcpy (buf, step ? "s" : "c");
+
+ putpkt (buf);
+}
+
+/* Same as remote_resume, but with async support. */
+static void
+remote_async_resume (pid, step, siggnal)
+ int pid, step;
+ enum target_signal siggnal;
+{
+ char *buf = alloca (PBUFSIZ);
+
+ if (pid == -1)
+ set_thread (0, 0); /* run any thread */
+ else
+ set_thread (pid, 0); /* run this thread */
+
+ dcache_flush (remote_dcache);
+
+ last_sent_signal = siggnal;
+ last_sent_step = step;
+
+ /* A hook for when we need to do something at the last moment before
+ resumption. */
+ if (target_resume_hook)
+ (*target_resume_hook) ();
+
+ /* Set things up before execution starts for async commands. */
+ /* This function can be entered more than once for the same execution
+ command, because it is also called by handle_inferior_event. So
+ we make sure that we don't do the initialization for sync
+ execution more than once. */
+ if (async_p && !target_executing)
+ {
+ target_executing = 1;
+
+ /* If the command must look synchronous, fake it, by making gdb
+ display an empty prompt after the command has completed. Also
+ disable input. */
+ if (sync_execution)
+ {
+ push_prompt ("", "", "");
+ delete_file_handler (input_fd);
+ initialize_sigint_signal_handler ();
+ }
+ }
+
+ 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");
+ strcpy (buf, step ? "s" : "c");
putpkt (buf);
}
\f
+
+/* Set up the signal handler for SIGINT, while the target is
+ executing, ovewriting the 'regular' SIGINT signal handler. */
+static void
+initialize_sigint_signal_handler ()
+{
+ sigint_remote_token =
+ create_async_signal_handler (async_remote_interrupt, NULL);
+ signal (SIGINT, handle_remote_sigint);
+}
+
+/* Signal handler for SIGINT, while the target is executing. */
+static void
+handle_remote_sigint (sig)
+ int sig;
+{
+ signal (sig, handle_remote_sigint_twice);
+ sigint_remote_twice_token =
+ create_async_signal_handler (async_remote_interrupt_twice, NULL);
+ mark_async_signal_handler_wrapper (sigint_remote_token);
+}
+
+/* Signal handler for SIGINT, installed after SIGINT has already been
+ sent once. It will take effect the second time that the user sends
+ a ^C. */
+static void
+handle_remote_sigint_twice (sig)
+ int sig;
+{
+ signal (sig, handle_sigint);
+ sigint_remote_twice_token =
+ create_async_signal_handler (async_remote_interrupt, NULL);
+ mark_async_signal_handler_wrapper (sigint_remote_twice_token);
+}
+
+/* Perform the real interruption of hte target execution, in response
+ to a ^C. */
+static void
+async_remote_interrupt (arg)
+ gdb_client_data arg;
+{
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
+
+ target_stop ();
+}
+
+/* Perform interrupt, if the first attempt did not succeed. Just give
+ up on the target alltogether. */
+static void
+async_remote_interrupt_twice (arg)
+ gdb_client_data arg;
+{
+ interrupt_query ();
+ signal (SIGINT, handle_remote_sigint);
+}
+
+/* Reinstall the usual SIGINT handlers, after the target has
+ stopped. */
+void
+cleanup_sigint_signal_handler ()
+{
+ signal (SIGINT, handle_sigint);
+ if (sigint_remote_twice_token)
+ delete_async_signal_handler ((async_signal_handler **) & sigint_remote_twice_token);
+ if (sigint_remote_token)
+ delete_async_signal_handler ((async_signal_handler **) & sigint_remote_token);
+}
+
/* Send ^C to target to halt it. Target will respond, and send us a
packet. */
-
static void (*ofunc) PARAMS ((int));
+/* The command line interface's stop routine. This function is installed
+ as a signal handler for SIGINT. The first time a user requests a
+ stop, we call remote_stop to send a break or ^C. If there is no
+ response from the target (it didn't stop when the user requested it),
+ we ask the user if he'd like to detach from the target. */
static void
remote_interrupt (signo)
int signo;
{
- remote_stop ();
+ /* If this doesn't work, try more severe steps. */
+ signal (signo, remote_interrupt_twice);
+
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
+
+ target_stop ();
+}
+
+/* The user typed ^C twice. */
+
+static void
+remote_interrupt_twice (signo)
+ int signo;
+{
+ signal (signo, ofunc);
+ interrupt_query ();
signal (signo, remote_interrupt);
}
-
+
+/* This is the generic stop called via the target vector. When a target
+ interrupt is requested, either by the command line or the GUI, we
+ will eventually end up here. */
static void
remote_stop ()
{
- if (!interrupted_already)
- {
- /* Send a break or a ^C, depending on user preference. */
- interrupted_already = 1;
-
- if (remote_debug)
- printf_unfiltered ("remote_stop called\n");
+ /* Send a break or a ^C, depending on user preference. */
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "remote_stop called\n");
- if (remote_break)
- SERIAL_SEND_BREAK (remote_desc);
- else
- SERIAL_WRITE (remote_desc, "\003", 1);
- }
+ if (remote_break)
+ SERIAL_SEND_BREAK (remote_desc);
else
- {
- signal (SIGINT, ofunc);
- interrupt_query ();
- signal (SIGINT, remote_interrupt);
- interrupted_already = 0;
- }
+ SERIAL_WRITE (remote_desc, "\003", 1);
}
/* Ask the user what to do when an interrupt is received. */
{
char *p;
- for (p = msg; *p; p +=2)
+ for (p = msg; p[0] && p[1]; p += 2)
{
char tb[2];
char c = fromhex (p[0]) * 16 + fromhex (p[1]);
tb[0] = c;
tb[1] = 0;
- if (target_output_hook)
- target_output_hook (tb);
- else
- fputs_filtered (tb, gdb_stdout);
+ fputs_unfiltered (tb, gdb_stdtarg);
}
}
-/* Wait until the remote machine stops, then return, storing status in
- STATUS just as `wait' would. Returns "pid" (though it's not clear
- what, if anything, that means in the case of this target). */
+/* Wait until the remote machine stops, then return,
+ storing status in STATUS just as `wait' would.
+ Returns "pid", which in the case of a multi-threaded
+ remote OS, is the thread-id. */
static int
remote_wait (pid, status)
int pid;
struct target_waitstatus *status;
{
- unsigned char buf[PBUFSIZ];
+ unsigned char *buf = alloca (PBUFSIZ);
int thread_num = -1;
status->kind = TARGET_WAITKIND_EXITED;
{
unsigned char *p;
- interrupted_already = 0;
ofunc = signal (SIGINT, remote_interrupt);
getpkt ((char *) buf, 1);
signal (SIGINT, ofunc);
/* This is a hook for when we need to do something (perhaps the
- collection of trace data) every time the target stops. */
+ collection of trace data) every time the target stops. */
if (target_wait_loop_hook)
(*target_wait_loop_hook) ();
/* Expedited reply, containing Signal, {regno, reg} repeat */
/* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
- ss = signal number
- n... = register number
- r... = register contents
- */
+ ss = signal number
+ n... = register number
+ r... = register contents
+ */
p = &buf[3]; /* after Txx */
while (*p)
/* Read the register number */
regno = strtol ((const char *) p, &p_temp, 16);
- p1 = (unsigned char *)p_temp;
+ p1 = (unsigned char *) p_temp;
- if (p1 == p) /* No register number present here */
+ if (p1 == p) /* No register number present here */
{
p1 = (unsigned char *) strchr ((const char *) p, ':');
if (p1 == NULL)
if (*p++ != ';')
{
warning ("Remote register badly formatted: %s", buf);
- warning (" here: %s",p);
+ warning (" here: %s", p);
}
}
}
status->value.sig = (enum target_signal)
(((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+ if (buf[3] == 'p')
+ {
+ /* Export Cisco kernel mode as a convenience variable
+ (so that it can be used in the GDB prompt if desired). */
+
+ if (cisco_kernel_mode == 1)
+ set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
+ value_from_string ("PDEBUG-"));
+ cisco_kernel_mode = 0;
+ thread_num = strtol ((const char *) &buf[4], NULL, 16);
+ record_currthread (thread_num);
+ }
+ else if (buf[3] == 'k')
+ {
+ /* Export Cisco kernel mode as a convenience variable
+ (so that it can be used in the GDB prompt if desired). */
+
+ if (cisco_kernel_mode == 1)
+ set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
+ value_from_string ("KDEBUG-"));
+ cisco_kernel_mode = 1;
+ }
goto got_status;
+ case 'N': /* Cisco special: status and offsets */
+ {
+ bfd_vma text_addr, data_addr, bss_addr;
+ bfd_signed_vma text_off, data_off, bss_off;
+ unsigned char *p1;
+
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+
+ if (symfile_objfile == NULL)
+ {
+ warning ("Relocation packet 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. */
if (last_sent_signal != TARGET_SIGNAL_0)
{
/* Zero length reply means that we tried 'S' or 'C' and
- the remote system doesn't support it. */
+ the remote system doesn't support it. */
target_terminal_ours_for_output ();
printf_filtered
("Can't send signals to this remote system. %s not sent.\n",
continue;
}
}
- got_status:
+got_status:
if (thread_num != -1)
{
- /* Initial thread value can only be acquired via wait, so deal with
- this marker which is used before the first thread value is
- acquired. */
- if (inferior_pid == MAGIC_NULL_PID)
- {
- inferior_pid = thread_num;
- if (!in_thread_list (inferior_pid))
- add_thread (inferior_pid);
+ return thread_num;
+ }
+ return inferior_pid;
+}
+
+/* Async version of remote_wait. */
+static int
+remote_async_wait (pid, status)
+ int pid;
+ struct target_waitstatus *status;
+{
+ unsigned char *buf = alloca (PBUFSIZ);
+ int thread_num = -1;
+
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = 0;
+
+ while (1)
+ {
+ unsigned char *p;
+
+ if (!async_p)
+ ofunc = signal (SIGINT, remote_interrupt);
+ getpkt ((char *) buf, 1);
+ if (!async_p)
+ signal (SIGINT, ofunc);
+
+ /* This is a hook for when we need to do something (perhaps the
+ collection of trace data) every time the target stops. */
+ if (target_wait_loop_hook)
+ (*target_wait_loop_hook) ();
+
+ switch (buf[0])
+ {
+ case 'E': /* Error of some sort */
+ warning ("Remote failure reply: %s", buf);
+ continue;
+ case 'T': /* Status with PC, SP, FP, ... */
+ {
+ int i;
+ long regno;
+ char regs[MAX_REGISTER_RAW_SIZE];
+
+ /* Expedited reply, containing Signal, {regno, reg} repeat */
+ /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
+ ss = signal number
+ n... = register number
+ r... = register contents
+ */
+ p = &buf[3]; /* after Txx */
+
+ while (*p)
+ {
+ unsigned char *p1;
+ char *p_temp;
+
+ /* Read the register number */
+ regno = strtol ((const char *) p, &p_temp, 16);
+ p1 = (unsigned char *) p_temp;
+
+ if (p1 == p) /* No register number present here */
+ {
+ p1 = (unsigned char *) strchr ((const char *) p, ':');
+ if (p1 == NULL)
+ warning ("Malformed packet(a) (missing colon): %s\n\
+Packet: '%s'\n",
+ p, buf);
+ if (strncmp ((const char *) p, "thread", p1 - p) == 0)
+ {
+ p_temp = unpack_varlen_hex (++p1, &thread_num);
+ record_currthread (thread_num);
+ p = (unsigned char *) p_temp;
+ }
+ }
+ else
+ {
+ p = p1;
+
+ if (*p++ != ':')
+ warning ("Malformed packet(b) (missing colon): %s\n\
+Packet: '%s'\n",
+ p, buf);
+
+ if (regno >= NUM_REGS)
+ warning ("Remote sent bad register number %ld: %s\n\
+Packet: '%s'\n",
+ regno, p, buf);
+
+ for (i = 0; i < REGISTER_RAW_SIZE (regno); i++)
+ {
+ if (p[0] == 0 || p[1] == 0)
+ warning ("Remote reply is too short: %s", buf);
+ regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
+ p += 2;
+ }
+ supply_register (regno, regs);
+ }
+
+ if (*p++ != ';')
+ {
+ warning ("Remote register badly formatted: %s", buf);
+ warning (" here: %s", p);
+ }
+ }
+ }
+ /* fall through */
+ case 'S': /* Old style status, just signal only */
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+
+ if (buf[3] == 'p')
+ {
+ /* Export Cisco kernel mode as a convenience variable
+ (so that it can be used in the GDB prompt if desired). */
+
+ if (cisco_kernel_mode == 1)
+ set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
+ value_from_string ("PDEBUG-"));
+ cisco_kernel_mode = 0;
+ thread_num = strtol ((const char *) &buf[4], NULL, 16);
+ record_currthread (thread_num);
+ }
+ else if (buf[3] == 'k')
+ {
+ /* Export Cisco kernel mode as a convenience variable
+ (so that it can be used in the GDB prompt if desired). */
+
+ if (cisco_kernel_mode == 1)
+ set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
+ value_from_string ("KDEBUG-"));
+ cisco_kernel_mode = 1;
+ }
+ goto got_status;
+ case 'N': /* Cisco special: status and offsets */
+ {
+ bfd_vma text_addr, data_addr, bss_addr;
+ bfd_signed_vma text_off, data_off, bss_off;
+ unsigned char *p1;
+
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+
+ if (symfile_objfile == NULL)
+ {
+ warning ("Relocation packet recieved with no symbol file. \
+Packet Dropped");
+ goto got_status;
+ }
+
+ /* Relocate object file. Buffer format is NAATT;DD;BB
+ * where AA is the signal number, TT is the new text
+ * address, DD * is the new data address, and BB is the
+ * new bss address. */
+
+ p = &buf[3];
+ text_addr = strtoul (p, (char **) &p1, 16);
+ if (p1 == p || *p1 != ';')
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+ p = p1 + 1;
+ data_addr = strtoul (p, (char **) &p1, 16);
+ if (p1 == p || *p1 != ';')
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+ p = p1 + 1;
+ bss_addr = strtoul (p, (char **) &p1, 16);
+ if (p1 == p)
+ warning ("Malformed relocation packet: Packet '%s'", buf);
+
+ if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
+ &text_off, &data_off, &bss_off)
+ == 0)
+ if (text_off != 0 || data_off != 0 || bss_off != 0)
+ remote_cisco_objfile_relocate (text_off, data_off, bss_off);
+
+ goto got_status;
+ }
+ case 'W': /* Target exited */
+ {
+ /* The remote process exited. */
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
+ goto got_status;
+ }
+ case 'X':
+ status->kind = TARGET_WAITKIND_SIGNALLED;
+ status->value.sig = (enum target_signal)
+ (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
+ kill_kludge = 1;
+
+ goto got_status;
+ case 'O': /* Console output */
+ remote_console_output (buf + 1);
+ continue;
+ case '\0':
+ if (last_sent_signal != TARGET_SIGNAL_0)
+ {
+ /* Zero length reply means that we tried 'S' or 'C' and
+ the remote system doesn't support it. */
+ target_terminal_ours_for_output ();
+ printf_filtered
+ ("Can't send signals to this remote system. %s not sent.\n",
+ target_signal_to_name (last_sent_signal));
+ last_sent_signal = TARGET_SIGNAL_0;
+ target_terminal_inferior ();
+
+ strcpy ((char *) buf, last_sent_step ? "s" : "c");
+ putpkt ((char *) buf);
+ continue;
+ }
+ /* else fallthrough */
+ default:
+ warning ("Invalid remote reply: %s", buf);
+ continue;
}
+ }
+got_status:
+ if (thread_num != -1)
+ {
return thread_num;
}
return inferior_pid;
remote_fetch_registers (regno)
int regno;
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
int i;
char *p;
char regs[REGISTER_BYTES];
&& buf[0] != 'x') /* New: unavailable register value */
{
if (remote_debug)
- printf_unfiltered ("Bad register packet; fetching a new packet\n");
+ fprintf_unfiltered (gdb_stdlog,
+ "Bad register packet; fetching a new packet\n");
getpkt (buf, 0);
}
goto supply_them;
}
if (p[0] == 'x' && p[1] == 'x')
- regs[i] = 0; /* 'x' */
+ regs[i] = 0; /* 'x' */
else
regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
p += 2;
warning ("Remote reply is too short: %s", buf);
#endif
}
-
- supply_them:
+
+supply_them:
for (i = 0; i < NUM_REGS; i++)
- {
- supply_register (i, ®s[REGISTER_BYTE(i)]);
- if (buf[REGISTER_BYTE(i) * 2] == 'x')
- register_valid[i] = -1; /* register value not available */
- }
+ {
+ supply_register (i, ®s[REGISTER_BYTE (i)]);
+ if (buf[REGISTER_BYTE (i) * 2] == 'x')
+ register_valid[i] = -1; /* register value not available */
+ }
}
/* Prepare to store registers. Since we may send them all (using a
'G' request), we have to read out the ones we don't want to change
first. */
-static void
+static void
remote_prepare_to_store ()
{
/* Make sure the entire registers array is valid. */
- read_register_bytes (0, (char *)NULL, REGISTER_BYTES);
+ switch (remote_protocol_P.support)
+ {
+ case PACKET_DISABLE:
+ case PACKET_SUPPORT_UNKNOWN:
+ read_register_bytes (0, (char *) NULL, REGISTER_BYTES);
+ break;
+ case PACKET_ENABLE:
+ break;
+ }
+}
+
+/* Helper: Attempt to store REGNO using the P packet. Return fail IFF
+ packet was not recognized. */
+
+static int
+store_register_using_P (regno)
+ int regno;
+{
+ /* Try storing a single register. */
+ char *buf = alloca (PBUFSIZ);
+ char *regp;
+ char *p;
+ int i;
+
+ sprintf (buf, "P%x=", regno);
+ p = buf + strlen (buf);
+ regp = ®isters[REGISTER_BYTE (regno)];
+ for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i)
+ {
+ *p++ = tohex ((regp[i] >> 4) & 0xf);
+ *p++ = tohex (regp[i] & 0xf);
+ }
+ *p = '\0';
+ remote_send (buf);
+
+ return buf[0] != '\0';
}
+
/* Store register REGNO, or all registers if REGNO == -1, from the contents
of REGISTERS. FIXME: ignores errors. */
remote_store_registers (regno)
int regno;
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
int i;
char *p;
set_thread (inferior_pid, 1);
- if (regno >= 0 && stub_supports_P)
+ if (regno >= 0)
{
- /* Try storing a single register. */
- char *regp;
-
- sprintf (buf, "P%x=", regno);
- p = buf + strlen (buf);
- regp = ®isters[REGISTER_BYTE (regno)];
- for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i)
- {
- *p++ = tohex ((regp[i] >> 4) & 0xf);
- *p++ = tohex (regp[i] & 0xf);
- }
- *p = '\0';
- remote_send (buf);
- if (buf[0] != '\0')
+ switch (remote_protocol_P.support)
{
- /* The stub understands the 'P' request. We are done. */
- return;
+ case PACKET_DISABLE:
+ break;
+ case PACKET_ENABLE:
+ if (store_register_using_P (regno))
+ return;
+ else
+ error ("Protocol error: P packet not recognized by stub");
+ case PACKET_SUPPORT_UNKNOWN:
+ if (store_register_using_P (regno))
+ {
+ /* The stub recognized the 'P' packet. Remember this. */
+ remote_protocol_P.support = PACKET_ENABLE;
+ return;
+ }
+ else
+ {
+ /* The stub does not support the 'P' packet. Use 'G'
+ instead, and don't try using 'P' in the future (it
+ will just waste our time). */
+ remote_protocol_P.support = PACKET_DISABLE;
+ break;
+ }
}
-
- /* The stub does not support the 'P' request. Use 'G' instead,
- and don't try using 'P' in the future (it will just waste our
- time). */
- stub_supports_P = 0;
}
buf[0] = 'G';
/* Read a word from remote address ADDR and return it.
This goes through the data cache. */
-#if 0 /* unused? */
+#if 0 /* unused? */
static int
remote_fetch_word (addr)
CORE_ADDR addr;
{
dcache_poke (remote_dcache, addr, word);
}
-#endif /* 0 (unused?) */
-
+#endif /* 0 (unused?) */
\f
+
/* Return the number of hex digits in num. */
static int
for (i = len - 1; i >= 0; i--)
{
- buf[i] = "0123456789abcdef" [(num & 0xf)];
+ buf[i] = "0123456789abcdef"[(num & 0xf)];
num >>= 4;
}
return addr;
}
+/* Determine whether the remote target supports binary downloading.
+ This is accomplished by sending a no-op memory write of zero length
+ to the target at the specified address. It does not suffice to send
+ the whole packet, since many stubs strip the eighth bit and subsequently
+ compute a wrong checksum, which causes real havoc with remote_write_bytes.
+
+ NOTE: This can still lose if the serial line is not eight-bit
+ clean. In cases like this, the user should clear "remote
+ X-packet". */
+
+static void
+check_binary_download (addr)
+ CORE_ADDR addr;
+{
+ switch (remote_protocol_binary_download.support)
+ {
+ case PACKET_DISABLE:
+ break;
+ case PACKET_ENABLE:
+ break;
+ case PACKET_SUPPORT_UNKNOWN:
+ {
+ char *buf = alloca (PBUFSIZ);
+ char *p;
+
+ p = buf;
+ *p++ = 'X';
+ p += hexnumstr (p, (ULONGEST) addr);
+ *p++ = ',';
+ p += hexnumstr (p, (ULONGEST) 0);
+ *p++ = ':';
+ *p = '\0';
+
+ putpkt_binary (buf, (int) (p - buf));
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0')
+ {
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "binary downloading NOT suppported by target\n");
+ remote_protocol_binary_download.support = PACKET_DISABLE;
+ }
+ else
+ {
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog,
+ "binary downloading suppported by target\n");
+ remote_protocol_binary_download.support = PACKET_ENABLE;
+ }
+ break;
+ }
+ }
+}
+
/* Write memory data directly to the remote machine.
This does not inform the data cache; the data cache uses this.
MEMADDR is the address in the remote memory space.
char *myaddr;
int len;
{
+ unsigned char *buf = alloca (PBUFSIZ);
int max_buf_size; /* Max size of packet output buffer */
int origlen;
+ /* Verify that the target can support a binary download */
+ check_binary_download (memaddr);
+
/* Chop the transfer down if necessary */
max_buf_size = min (remote_write_size, PBUFSIZ);
origlen = len;
while (len > 0)
{
- char buf[PBUFSIZ];
- char *p;
+ unsigned char *p, *plen;
int todo;
int i;
- todo = min (len, max_buf_size / 2); /* num bytes that will fit */
-
/* construct "M"<memaddr>","<len>":" */
/* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
memaddr = remote_address_masked (memaddr);
p = buf;
- *p++ = 'M';
+ switch (remote_protocol_binary_download.support)
+ {
+ case PACKET_ENABLE:
+ *p++ = 'X';
+ todo = min (len, max_buf_size);
+ break;
+ case PACKET_DISABLE:
+ *p++ = 'M';
+ todo = min (len, max_buf_size / 2); /* num bytes that will fit */
+ break;
+ case PACKET_SUPPORT_UNKNOWN:
+ internal_error ("remote_write_bytes: bad switch");
+ }
+
p += hexnumstr (p, (ULONGEST) memaddr);
*p++ = ',';
+
+ plen = p; /* remember where len field goes */
p += hexnumstr (p, (ULONGEST) todo);
*p++ = ':';
*p = '\0';
/* We send target system values byte by byte, in increasing byte
- addresses, each byte encoded as two hex characters. */
-
- for (i = 0; i < todo; i++)
+ addresses, each byte encoded as two hex characters (or one
+ binary character). */
+ switch (remote_protocol_binary_download.support)
{
- *p++ = tohex ((myaddr[i] >> 4) & 0xf);
- *p++ = tohex (myaddr[i] & 0xf);
+ case PACKET_ENABLE:
+ {
+ int escaped = 0;
+ for (i = 0;
+ (i < todo) && (i + escaped) < (max_buf_size - 2);
+ i++)
+ {
+ switch (myaddr[i] & 0xff)
+ {
+ case '$':
+ case '#':
+ case 0x7d:
+ /* These must be escaped */
+ escaped++;
+ *p++ = 0x7d;
+ *p++ = (myaddr[i] & 0xff) ^ 0x20;
+ break;
+ default:
+ *p++ = myaddr[i] & 0xff;
+ break;
+ }
+ }
+
+ if (i < todo)
+ {
+ /* Escape chars have filled up the buffer prematurely,
+ and we have actually sent fewer bytes than planned.
+ Fix-up the length field of the packet. */
+
+ /* FIXME: will fail if new len is a shorter string than
+ old len. */
+
+ plen += hexnumstr (plen, (ULONGEST) i);
+ *plen++ = ':';
+ }
+ break;
+ }
+ case PACKET_DISABLE:
+ {
+ for (i = 0; i < todo; i++)
+ {
+ *p++ = tohex ((myaddr[i] >> 4) & 0xf);
+ *p++ = tohex (myaddr[i] & 0xf);
+ }
+ *p = '\0';
+ break;
+ }
+ case PACKET_SUPPORT_UNKNOWN:
+ internal_error ("remote_write_bytes: bad switch");
}
- *p = '\0';
- putpkt (buf);
+ putpkt_binary (buf, (int) (p - buf));
getpkt (buf, 0);
if (buf[0] == 'E')
errno = EIO;
return 0;
}
- myaddr += todo;
- memaddr += todo;
- len -= todo;
+
+ /* Increment by i, not by todo, in case escape chars
+ caused us to send fewer bytes than we'd planned. */
+ myaddr += i;
+ memaddr += i;
+ len -= i;
}
return origlen;
}
char *myaddr;
int len;
{
+ char *buf = alloca (PBUFSIZ);
int max_buf_size; /* Max size of packet output buffer */
int origlen;
origlen = len;
while (len > 0)
{
- char buf[PBUFSIZ];
char *p;
int todo;
int i;
- todo = min (len, max_buf_size / 2); /* num bytes that will fit */
+ todo = min (len, max_buf_size / 2); /* num bytes that will fit */
/* construct "m"<memaddr>","<len>" */
/* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
return 0;
}
- /* Reply describes memory byte by byte,
- each byte encoded as two hex characters. */
+ /* Reply describes memory byte by byte,
+ each byte encoded as two hex characters. */
p = buf;
for (i = 0; i < todo; i++)
}
\f
/* Read or write LEN bytes from inferior memory at MEMADDR,
- transferring to or from debugger address MYADDR. Write to inferior
- if SHOULD_WRITE is nonzero. Returns length of data written or
- read; 0 for error. */
+ transferring to or from debugger address BUFFER. Write to inferior if
+ SHOULD_WRITE is nonzero. Returns length of data written or read; 0
+ for error. */
+
+#ifndef REMOTE_TRANSLATE_XFER_ADDRESS
+#define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \
+ (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN))
+#endif
/* ARGSUSED */
static int
-remote_xfer_memory (memaddr, myaddr, len, should_write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
+remote_xfer_memory (mem_addr, buffer, mem_len, should_write, target)
+ CORE_ADDR mem_addr;
+ char *buffer;
+ int mem_len;
int should_write;
- struct target_ops *target; /* ignored */
+ struct target_ops *target; /* ignored */
{
-#ifdef REMOTE_TRANSLATE_XFER_ADDRESS
- CORE_ADDR targaddr;
- int targlen;
- REMOTE_TRANSLATE_XFER_ADDRESS (memaddr, len, targaddr, targlen);
- if (targlen == 0)
+ CORE_ADDR targ_addr;
+ int targ_len;
+ REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len);
+ if (targ_len <= 0)
return 0;
- memaddr = targaddr;
- len = targlen;
-#endif
- return dcache_xfer_memory (remote_dcache, memaddr, myaddr,
- len, should_write);
+ return dcache_xfer_memory (remote_dcache, targ_addr, buffer,
+ targ_len, should_write);
}
-
+
#if 0
/* Enable after 4.12. */
long mask_long, data_long;
long data_found_long;
CORE_ADDR addr_we_found;
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
long returned_long[2];
char *p;
char *buf;
{
puts_filtered ("\"");
- while (*buf)
- gdb_printchar (*buf++, gdb_stdout, '"');
+ fputstr_filtered (buf, '"', gdb_stdout);
puts_filtered ("\"");
}
+int
+putpkt (buf)
+ char *buf;
+{
+ return putpkt_binary (buf, strlen (buf));
+}
/* Send a packet to the remote machine, with error checking. The data
of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5
to account for the $, # and checksum, and for a possible /0 if we are
debugging (remote_debug) and want to print the sent packet as a string */
-int
-putpkt (buf)
+static int
+putpkt_binary (buf, cnt)
char *buf;
+ int cnt;
{
int i;
unsigned char csum = 0;
- char buf2[PBUFSIZ];
- int cnt = strlen (buf);
+ char *buf2 = alloca (PBUFSIZ);
+ char *junkbuf = alloca (PBUFSIZ);
+
int ch;
int tcount = 0;
char *p;
/* Copy the packet into buffer BUF2, encapsulating it
and giving it a checksum. */
- if (cnt > (int) sizeof (buf2) - 5) /* Prosanity check */
+ if (cnt > BUFSIZ - 5) /* Prosanity check */
abort ();
p = buf2;
if (remote_debug)
{
*p = '\0';
- printf_unfiltered ("Sending packet: %s...", buf2);
- gdb_flush (gdb_stdout);
+ fprintf_unfiltered (gdb_stdlog, "Sending packet: ");
+ fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog);
+ fprintf_unfiltered (gdb_stdlog, "...");
+ gdb_flush (gdb_stdlog);
}
if (SERIAL_WRITE (remote_desc, buf2, p - buf2))
perror_with_name ("putpkt: write failed");
{
ch = readchar (remote_timeout);
- if (remote_debug)
+ if (remote_debug)
{
switch (ch)
{
{
case '+':
if (remote_debug)
- printf_unfiltered ("Ack\n");
+ fprintf_unfiltered (gdb_stdlog, "Ack\n");
return 1;
case SERIAL_TIMEOUT:
- tcount ++;
+ tcount++;
if (tcount > 3)
return 0;
break; /* Retransmit buffer */
case '$':
{
- char junkbuf[PBUFSIZ];
-
- /* It's probably an old response, and we're out of sync.
- Just gobble up the packet and ignore it. */
+ /* It's probably an old response, and we're out of sync.
+ Just gobble up the packet and ignore it. */
getpkt (junkbuf, 0);
- continue; /* Now, go look for + */
+ continue; /* Now, go look for + */
}
default:
if (remote_debug)
if (!started_error_output)
{
started_error_output = 1;
- printf_unfiltered ("putpkt: Junk: ");
+ fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
}
- putchar_unfiltered (ch & 0177);
+ fputc_unfiltered (ch & 0177, gdb_stdlog);
}
continue;
}
#if 0
/* This is wrong. If doing a long backtrace, the user should be
- able to get out next time we call QUIT, without anything as
- violent as interrupt_query. If we want to provide a way out of
- here without getting to the next QUIT, it should be based on
- hitting ^C twice as in remote_wait. */
+ able to get out next time we call QUIT, without anything as
+ violent as interrupt_query. If we want to provide a way out of
+ here without getting to the next QUIT, it should be based on
+ hitting ^C twice as in remote_wait. */
if (quit_flag)
{
quit_flag = 0;
}
}
-/* Come here after finding the start of the frame. Collect the rest
- into BUF, verifying the checksum, length, and handling run-length
+static int remote_cisco_mode;
+
+static void
+remote_cisco_expand (src, dest)
+ char *src;
+ char *dest;
+{
+ int i;
+ int repeat;
+
+ do
+ {
+ if (*src == '*')
+ {
+ repeat = (fromhex (src[1]) << 4) + fromhex (src[2]);
+ for (i = 0; i < repeat; i++)
+ {
+ *dest++ = *(src - 1);
+ }
+ src += 2;
+ }
+ else
+ {
+ *dest++ = *src;
+ }
+ }
+ while (*src++);
+}
+
+/* Come here after finding the start of the frame. Collect the rest
+ into BUF, verifying the checksum, length, and handling run-length
compression. Returns 0 on any error, 1 on success. */
static int
{
case SERIAL_TIMEOUT:
if (remote_debug)
- puts_filtered ("Timeout in mid-packet, retrying\n");
+ fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog);
return 0;
case '$':
if (remote_debug)
- puts_filtered ("Saw new packet start in middle of old one\n");
+ fputs_filtered ("Saw new packet start in middle of old one\n",
+ gdb_stdlog);
return 0; /* Start a new packet, count retries */
case '#':
{
pktcsum |= fromhex (readchar (remote_timeout));
if (csum == pktcsum)
- return 1;
+ {
+ if (remote_cisco_mode) /* variant run-length-encoding */
+ {
+ char *tmp_buf = alloca (PBUFSIZ);
- if (remote_debug)
+ remote_cisco_expand (buf, tmp_buf);
+ strcpy (buf, tmp_buf);
+ }
+ return 1;
+ }
+
+ if (remote_debug)
{
- printf_filtered ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
- pktcsum, csum);
- puts_filtered (buf);
- puts_filtered ("\n");
+ fprintf_filtered (gdb_stdlog,
+ "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
+ pktcsum, csum);
+ fputs_filtered (buf, gdb_stdlog);
+ fputs_filtered ("\n", gdb_stdlog);
}
return 0;
}
case '*': /* Run length encoding */
- csum += c;
- c = readchar (remote_timeout);
- csum += c;
- c = c - ' ' + 3; /* Compute repeat count */
-
-
- if (c > 0 && c < 255 && bp + c - 1 < buf + PBUFSIZ - 1)
+ if (remote_cisco_mode == 0) /* variant run-length-encoding */
{
- memset (bp, *(bp - 1), c);
- bp += c;
- continue;
- }
+ csum += c;
+ c = readchar (remote_timeout);
+ csum += c;
+ c = c - ' ' + 3; /* Compute repeat count */
- *bp = '\0';
- printf_filtered ("Repeat count %d too large for buffer: ", c);
- puts_filtered (buf);
- puts_filtered ("\n");
- return 0;
+ if (c > 0 && c < 255 && bp + c - 1 < buf + PBUFSIZ - 1)
+ {
+ memset (bp, *(bp - 1), c);
+ bp += c;
+ continue;
+ }
+ *bp = '\0';
+ printf_filtered ("Repeat count %d too large for buffer: ", c);
+ puts_filtered (buf);
+ puts_filtered ("\n");
+ return 0;
+ }
+ /* else fall thru to treat like default */
default:
if (bp < buf + PBUFSIZ - 1)
{
int timeout;
int val;
- strcpy (buf,"timeout");
+ strcpy (buf, "timeout");
if (forever)
{
-#ifdef MAINTENANCE_CMDS
timeout = watchdog > 0 ? watchdog : -1;
-#else
- timeout = -1;
-#endif
}
else
for (tries = 1; tries <= MAX_TRIES; tries++)
{
/* This can loop forever if the remote side sends us characters
- continuously, but if it pauses, we'll get a zero from readchar
- because of timeout. Then we'll count that as a retry. */
+ continuously, but if it pauses, we'll get a zero from readchar
+ because of timeout. Then we'll count that as a retry. */
/* Note that we will only wait forever prior to the start of a packet.
- After that, we expect characters to arrive at a brisk pace. They
- should show up within remote_timeout intervals. */
+ After that, we expect characters to arrive at a brisk pace. They
+ should show up within remote_timeout intervals. */
do
{
if (c == SERIAL_TIMEOUT)
{
-#ifdef MAINTENANCE_CMDS
if (forever) /* Watchdog went off. Kill the target. */
{
target_mourn_inferior ();
error ("Watchdog has expired. Target detached.\n");
}
-#endif
if (remote_debug)
- puts_filtered ("Timed out.\n");
+ fputs_filtered ("Timed out.\n", gdb_stdlog);
goto retry;
}
}
if (val == 1)
{
if (remote_debug)
- fprintf_unfiltered (gdb_stdout, "Packet received: %s\n", buf);
+ {
+ fprintf_unfiltered (gdb_stdlog, "Packet received: ");
+ fputstr_unfiltered (buf, 0, gdb_stdlog);
+ fprintf_unfiltered (gdb_stdlog, "\n");
+ }
SERIAL_WRITE (remote_desc, "+", 1);
return;
}
/* Use catch_errors so the user can quit from gdb even when we aren't on
speaking terms with the remote system. */
- catch_errors ((catch_errors_ftype*) putpkt, "k", "", RETURN_MASK_ERROR);
+ catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR);
+
+ /* Don't wait for it to die. I'm not really sure it matters whether
+ we do or not. For the existing stubs, kill is a noop. */
+ target_mourn_inferior ();
+}
+
+/* Async version of remote_kill. */
+static void
+remote_async_kill ()
+{
+ /* Unregister the file descriptor from the event loop. */
+ if (async_p)
+ delete_file_handler (remote_desc->fd);
+
+ /* For some mysterious reason, wait_for_inferior calls kill instead of
+ mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
+ if (kill_kludge)
+ {
+ kill_kludge = 0;
+ target_mourn_inferior ();
+ return;
+ }
+
+ /* Use catch_errors so the user can quit from gdb even when we aren't on
+ speaking terms with the remote system. */
+ catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR);
/* Don't wait for it to die. I'm not really sure it matters whether
we do or not. For the existing stubs, kill is a noop. */
remote_mourn_1 (&remote_ops);
}
+static void
+remote_async_mourn ()
+{
+ remote_mourn_1 (&remote_async_ops);
+}
+
static void
extended_remote_mourn ()
{
proceed (-1, TARGET_SIGNAL_0, 0);
}
+/* Async version of extended_remote_create_inferior. */
+static void
+extended_remote_async_create_inferior (exec_file, args, env)
+ char *exec_file;
+ char *args;
+ char **env;
+{
+ /* Rip out the breakpoints; we'll reinsert them after restarting
+ the remote server. */
+ remove_breakpoints ();
+
+ /* If running asynchronously, register the target file descriptor
+ with the event loop. */
+ if (async_p)
+ add_file_handler (remote_desc->fd, fetch_inferior_event, 0);
+
+ /* Now restart the remote server. */
+ extended_remote_restart ();
+
+ /* Now put the breakpoints back in. This way we're safe if the
+ restart function works via a unix fork on the remote side. */
+ insert_breakpoints ();
+
+ /* Clean up from the last time we were running. */
+ clear_proceed_status ();
+
+ /* Let the remote process run. */
+ proceed (-1, TARGET_SIGNAL_0, 0);
+}
\f
+
/* On some machines, e.g. 68k, we may use a different breakpoint instruction
than other targets; in those use REMOTE_BREAKPOINT instead of just
BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
{
#ifdef REMOTE_BREAKPOINT
int val;
+#endif
+ int bp_size;
+ /* Try the "Z" 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.support == PACKET_ENABLE)
+ || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN))
+ {
+ char buf[PBUFSIZ], *p = buf;
+
+ addr = remote_address_masked (addr);
+ *(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, 0);
+
+ if (buf[0] != '\0')
+ {
+ remote_protocol_Z.support = PACKET_ENABLE;
+ return (buf[0] == 'E');
+ }
+
+ /* The stub does not support the 'Z' request. If the user has
+ explicitly requested the Z support, or if the stub previously
+ said it supported the packet, this is an error,
+ otherwise, mark it disabled. */
+
+ else if (remote_protocol_Z.support == PACKET_ENABLE)
+ {
+ error ("Protocol error: Z packet not recognized by stub");
+ }
+ else
+ {
+ remote_protocol_Z.support = PACKET_DISABLE;
+ }
+ }
+
+#ifdef REMOTE_BREAKPOINT
val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
if (val == 0)
CORE_ADDR addr;
char *contents_cache;
{
+ int bp_size;
+
+ if ((remote_protocol_Z.support == PACKET_ENABLE)
+ || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN))
+ {
+ char buf[PBUFSIZ], *p = buf;
+
+ *(p++) = 'z';
+ *(p++) = '0';
+ *(p++) = ',';
+
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ BREAKPOINT_FROM_PC (&addr, &bp_size);
+ sprintf (p, ",%d", bp_size);
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ return (buf[0] == 'E');
+ }
+
#ifdef REMOTE_BREAKPOINT
return target_write_memory (addr, contents_cache, sizeof big_break_insn);
#else
#endif /* REMOTE_BREAKPOINT */
}
+#ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
+int
+remote_insert_watchpoint (addr, len, type)
+ CORE_ADDR addr;
+ int len;
+ int type;
+{
+ char buf[PBUFSIZ], *p;
+
+ if (remote_protocol_Z.support == PACKET_DISABLE)
+ error ("Can't set hardware watchpoints without the 'Z' packet\n");
+
+ sprintf (buf, "Z%x,", type + 2 );
+ p = strchr (buf, '\0');
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ sprintf (p, ",%x", len);
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+
+int
+remote_remove_watchpoint (addr, len, type)
+ CORE_ADDR addr;
+ int len;
+ int type;
+{
+ char buf[PBUFSIZ], *p;
+
+ sprintf (buf, "z%x,", type + 2 );
+ p = strchr (buf, '\0');
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ sprintf (p, ",%x", len);
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+
+int
+remote_insert_hw_breakpoint (addr, len)
+ CORE_ADDR addr;
+ int len;
+{
+ char buf[PBUFSIZ], *p = buf;
+
+ if (remote_protocol_Z.support == PACKET_DISABLE)
+ error ("Can't set hardware breakpoints without the 'Z' packet\n");
+
+ *(p++) = 'Z';
+ *(p++) = '1';
+ *(p++) = ',';
+
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ *p = '\0';
+
+ putpkt (buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+
+int
+remote_remove_hw_breakpoint (addr, len)
+ CORE_ADDR addr;
+ int len;
+{
+ char buf[PBUFSIZ], *p = buf;
+
+ *(p++) = 'z';
+ *(p++) = '1';
+ *(p++) = ',';
+
+ addr = remote_address_masked (addr);
+ p += hexnumstr (p, (ULONGEST) addr);
+ *p = '\0';
+
+ putpkt(buf);
+ getpkt (buf, 0);
+
+ if (buf[0] == '\0' || buf [0] == 'E')
+ return -1;
+
+ return 0;
+}
+#endif
+
/* Some targets are only capable of doing downloads, and afterwards
they switch to the remote serial protocol. This function provides
a clean way to get from the download target to the remote target.
/* Table used by the crc32 function to calcuate the checksum. */
-static unsigned long crc32_table[256] = {0, 0};
+static unsigned long crc32_table[256] =
+{0, 0};
static unsigned long
crc32 (buf, len, crc)
int len;
unsigned int crc;
{
- if (! crc32_table[1])
+ if (!crc32_table[1])
{
/* Initialize the CRC table and the decoding table. */
int i, j;
unsigned int c;
for (i = 0; i < 256; i++)
- {
- for (c = i << 24, j = 8; j > 0; --j)
- c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
- crc32_table[i] = c;
- }
+ {
+ for (c = i << 24, j = 8; j > 0; --j)
+ c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
+ crc32_table[i] = c;
+ }
}
while (len--)
unsigned long host_crc, target_crc;
extern bfd *exec_bfd;
struct cleanup *old_chain;
- char *tmp, *sectdata, *sectname, buf[PBUFSIZ];
+ char *tmp;
+ char *sectdata;
+ char *sectname;
+ char *buf = alloca (PBUFSIZ);
bfd_size_type size;
bfd_vma lma;
int matched = 0;
strcmp (current_target.to_shortname, "remote") != 0)
error ("command can only be used with remote target");
- for (s = exec_bfd->sections; s; s = s->next)
+ for (s = exec_bfd->sections; s; s = s->next)
{
if (!(s->flags & SEC_LOAD))
- continue; /* skip non-loadable section */
+ continue; /* skip non-loadable section */
size = bfd_get_section_size_before_reloc (s);
if (size == 0)
- continue; /* skip zero-length section */
+ continue; /* skip zero-length section */
sectname = (char *) bfd_get_section_name (exec_bfd, s);
if (args && strcmp (args, sectname) != 0)
- continue; /* not the section selected by user */
+ continue; /* not the section selected by user */
- matched = 1; /* do this section */
+ matched = 1; /* do this section */
lma = s->lma;
/* FIXME: assumes lma can fit into long */
sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size);
for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++)
target_crc = target_crc * 16 + fromhex (*tmp);
- printf_filtered ("Section %s, range 0x%08x -- 0x%08x: ",
- sectname, lma, lma + size);
+ printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
+ sectname, paddr (lma), paddr (lma + size));
if (host_crc == target_crc)
printf_filtered ("matched.\n");
else
- {
- printf_filtered ("MIS-MATCHED!\n");
- mismatched++;
- }
+ {
+ printf_filtered ("MIS-MATCHED!\n");
+ mismatched++;
+ }
do_cleanups (old_chain);
}
static int
remote_query (query_type, buf, outbuf, bufsiz)
- char query_type;
+ int query_type;
char *buf;
char *outbuf;
int *bufsiz;
{
int i;
- char buf2[PBUFSIZ];
+ char *buf2 = alloca (PBUFSIZ);
char *p2 = &buf2[0];
- char *p = buf;
- if (! bufsiz)
+ if (!bufsiz)
error ("null pointer to remote bufer size specified");
- /* minimum outbuf size is PBUFSIZE - if bufsiz is not large enough let
+ /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let
the caller know and return what the minimum size is */
/* Note: a zero bufsiz can be used to query the minimum buffer size */
- if ( *bufsiz < PBUFSIZ )
+ if (*bufsiz < PBUFSIZ)
{
*bufsiz = PBUFSIZ;
return -1;
}
/* except for querying the minimum buffer size, target must be open */
- if (! remote_desc)
+ 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') )
+ if ((query_type < 'A') || (query_type > 'Z'))
error ("invalid remote query type");
- if (! buf)
+ if (!buf)
error ("null remote query specified");
- if (! outbuf)
+ if (!outbuf)
error ("remote query requires a buffer to receive data");
outbuf[0] = '\0';
plus one extra in case we are debugging (remote_debug),
we have PBUFZIZ - 7 left to pack the query string */
i = 0;
- while ( buf[i] && (i < (PBUFSIZ - 8)) )
+ while (buf[i] && (i < (PBUFSIZ - 8)))
{
/* bad caller may have sent forbidden characters */
- if ( (!isprint(buf[i])) || (buf[i] == '$') || (buf[i] == '#') )
- error ("illegal characters in query string");
+ if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#'))
+ error ("illegal characters in query string");
*p2++ = buf[i];
i++;
}
*p2 = buf[i];
- if ( buf[i] )
- error ("query larger than avaiable buffer");
+ if (buf[i])
+ error ("query larger than available buffer");
i = putpkt (buf2);
- if ( i < 0 ) return i;
+ if (i < 0)
+ return i;
getpkt (outbuf, 0);
return 0;
}
+static void
+remote_rcmd (char *command,
+ struct gdb_file *outbuf)
+{
+ int i;
+ char *buf = alloca (PBUFSIZ);
+ char *p = buf;
+
+ if (!remote_desc)
+ error ("remote rcmd is only available after target open");
+
+ /* Send a NULL command across as an empty command */
+ if (command == NULL)
+ command = "";
+
+ /* The query prefix */
+ strcpy (buf, "qRcmd,");
+ p = strchr (buf, '\0');
+
+ if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ)
+ error ("\"monitor\" command ``%s'' is too long\n", command);
+
+ /* Encode the actual command */
+ for (i = 0; command[i]; i++)
+ {
+ *p++ = tohex ((command[i] >> 4) & 0xf);
+ *p++ = tohex (command[i] & 0xf);
+ }
+ *p = '\0';
+
+ if (putpkt (buf) < 0)
+ error ("Communication problem with target\n");
+
+ /* get/display the response */
+ while (1)
+ {
+ /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
+ buf[0] = '\0';
+ getpkt (buf, 0);
+ if (buf[0] == '\0')
+ error ("Target does not support this command\n");
+ if (buf[0] == 'O' && buf[1] != 'K')
+ {
+ remote_console_output (buf + 1); /* 'O' message from stub */
+ continue;
+ }
+ if (strcmp (buf, "OK") == 0)
+ break;
+ if (strlen (buf) == 3 && buf[0] == 'E'
+ && isdigit (buf[1]) && isdigit (buf[2]))
+ {
+ error ("Protocol error with Rcmd");
+ }
+ for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2)
+ {
+ char c = (fromhex (p[0]) << 4) + fromhex (p[1]);
+ fputc_unfiltered (c, outbuf);
+ }
+ break;
+ }
+}
+
static void
packet_command (args, from_tty)
char *args;
int from_tty;
{
- char buf[PBUFSIZ];
+ char *buf = alloca (PBUFSIZ);
- if (! remote_desc)
+ if (!remote_desc)
error ("command can only be used with remote target");
- if (! args)
+ if (!args)
error ("remote-packet command requires packet text as argument");
puts_filtered ("sending: ");
#if 0
/* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
-static void display_thread_info PARAMS ((struct gdb_ext_thread_info *info));
+static void display_thread_info PARAMS ((struct gdb_ext_thread_info * info));
static void threadset_test_cmd PARAMS ((char *cmd, int tty));
static void threadlist_test_cmd PARAMS ((char *cmd, int tty));
-int get_and_display_threadinfo PARAMS ((threadref *ref));
+int get_and_display_threadinfo PARAMS ((threadref * ref));
static void threadinfo_test_cmd PARAMS ((char *cmd, int tty));
-static int thread_display_step PARAMS ((threadref *ref, void *context));
+static int thread_display_step PARAMS ((threadref * ref, void *context));
static void threadlist_update_test_cmd PARAMS ((char *cmd, int tty));
static void init_remote_threadtests PARAMS ((void));
-#define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
+#define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
static void
threadset_test_cmd (cmd, tty)
static void
init_remote_ops ()
{
- remote_ops.to_shortname = "remote";
+ remote_ops.to_shortname = "remote";
remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
- remote_ops.to_doc =
+ remote_ops.to_doc =
"Use a remote computer via a serial line, using a gdb-specific protocol.\n\
-Specify the serial device it is connected to (e.g. /dev/ttya).";
- remote_ops.to_open = remote_open;
- remote_ops.to_close = remote_close;
+Specify the serial device it is connected to (e.g. /dev/ttya).";
+ remote_ops.to_open = remote_open;
+ remote_ops.to_close = remote_close;
remote_ops.to_detach = remote_detach;
- remote_ops.to_resume = remote_resume;
+ remote_ops.to_resume = remote_resume;
remote_ops.to_wait = remote_wait;
remote_ops.to_fetch_registers = remote_fetch_registers;
remote_ops.to_store_registers = remote_store_registers;
remote_ops.to_prepare_to_store = remote_prepare_to_store;
- remote_ops.to_xfer_memory = remote_xfer_memory;
- remote_ops.to_files_info = remote_files_info;
+ remote_ops.to_xfer_memory = remote_xfer_memory;
+ remote_ops.to_files_info = remote_files_info;
remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
- remote_ops.to_kill = remote_kill;
- remote_ops.to_load = generic_load;
+ remote_ops.to_kill = remote_kill;
+ remote_ops.to_load = generic_load;
remote_ops.to_mourn_inferior = remote_mourn;
remote_ops.to_thread_alive = remote_thread_alive;
+ remote_ops.to_find_new_threads = remote_threads_info;
remote_ops.to_stop = remote_stop;
remote_ops.to_query = remote_query;
+ remote_ops.to_rcmd = remote_rcmd;
remote_ops.to_stratum = process_stratum;
- remote_ops.to_has_all_memory = 1;
- remote_ops.to_has_memory = 1;
- remote_ops.to_has_stack = 1;
- remote_ops.to_has_registers = 1;
- remote_ops.to_has_execution = 1;
- remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
- remote_ops.to_magic = OPS_MAGIC;
+ remote_ops.to_has_all_memory = 1;
+ remote_ops.to_has_memory = 1;
+ remote_ops.to_has_stack = 1;
+ remote_ops.to_has_registers = 1;
+ remote_ops.to_has_execution = 1;
+ remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
+ remote_ops.to_magic = OPS_MAGIC;
}
/* Set up the extended remote vector by making a copy of the standard
{
extended_remote_ops = remote_ops;
- extended_remote_ops.to_shortname = "extended-remote";
- extended_remote_ops.to_longname =
+ extended_remote_ops.to_shortname = "extended-remote";
+ extended_remote_ops.to_longname =
"Extended remote serial target in gdb-specific protocol";
- extended_remote_ops.to_doc =
+ extended_remote_ops.to_doc =
"Use a remote computer via a serial line, using a gdb-specific protocol.\n\
Specify the serial device it is connected to (e.g. /dev/ttya).",
- extended_remote_ops.to_open = extended_remote_open;
+ extended_remote_ops.to_open = extended_remote_open;
extended_remote_ops.to_create_inferior = extended_remote_create_inferior;
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 (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ char *buf = alloca (PBUFSIZ);
+
+ if (remote_desc == 0)
+ error ("Command can only be used when connected to the remote target.");
+
+ putpkt ("qfProcessInfo");
+ getpkt (buf, 0);
+ if (buf[0] == 0)
+ return; /* Silently: target does not support this feature. */
+
+ if (buf[0] == 'E')
+ error ("info proc: target error.");
+
+ while (buf[0] == 'O') /* Capitol-O packet */
+ {
+ remote_console_output (&buf[1]);
+ putpkt ("qsProcessInfo");
+ getpkt (buf, 0);
+ }
+}
+
+/*
+ * Target Cisco
+ */
+
+static void
+remote_cisco_open (name, from_tty)
+ 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).");
+
+ target_preopen (from_tty);
+
+ unpush_target (&remote_cisco_ops);
+
+ remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes);
+
+ 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_packet_config (&remote_protocol_P);
+ init_packet_config (&remote_protocol_Z);
+
+ general_thread = -2;
+ continue_thread = -2;
+
+ /* Force remote_write_bytes to check whether target supports
+ binary downloading. */
+ init_packet_config (&remote_protocol_binary_download);
+
+ /* Without this, some commands which require an active target (such
+ as kill) won't work. This variable serves (at least) double duty
+ as both the pid of the target process (if it has such), and as a
+ flag indicating that a target is active. These functions should
+ be split out into seperate variables, especially since GDB will
+ someday have a notion of debugging several processes. */
+ inferior_pid = MAGIC_NULL_PID;
+
+ /* Start the remote connection; if error (0), discard this target. */
+
+ if (!catch_errors (remote_start_remote_dummy, (char *) 0,
+ "Couldn't establish connection to remote target\n",
+ RETURN_MASK_ALL))
+ {
+ pop_target ();
+ return;
+ }
+}
+
+static void
+remote_cisco_close (quitting)
+ int quitting;
+{
+ remote_cisco_mode = 0;
+ remote_close (quitting);
+}
+
+static void
+ remote_cisco_mourn
+PARAMS ((void))
+{
+ remote_mourn_1 (&remote_cisco_ops);
+}
+
+enum
+{
+ READ_MORE,
+ FATAL_ERROR,
+ ENTER_DEBUG,
+ DISCONNECT_TELNET
+}
+minitelnet_return;
+
+/* shared between readsocket() and readtty() */
+static char *tty_input;
+
+static int escape_count;
+static int echo_check;
+extern int quit_flag;
+
+static int
+readsocket ()
+{
+ 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)
+ {
+ 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 ()
+{
+ 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 ()
+{
+ 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 (remote_desc->fd, &input);
+
+ status = select (tablesize, &input, 0, 0, 0);
+ if ((status == -1) && (errno != EINTR))
+ {
+ error ("Communications error on select %d", errno);
+ }
+
+ /* Handle Control-C typed */
+
+ if (quit_flag)
+ {
+ if ((++quit_count) == 2)
+ {
+ if (query ("Interrupt GDB? "))
+ {
+ printf_filtered ("Interrupted by user.\n");
+ return_to_top_level (RETURN_QUIT);
+ }
+ quit_count = 0;
+ }
+ quit_flag = 0;
+
+ if (remote_break)
+ SERIAL_SEND_BREAK (remote_desc);
+ else
+ SERIAL_WRITE (remote_desc, "\003", 1);
+
+ continue;
+ }
+
+ /* Handle console input */
+
+ if (FD_ISSET (fileno (stdin), &input))
+ {
+ quit_count = 0;
+ echo_check = 0;
+ status = readtty ();
+ if (status == READ_MORE)
+ continue;
+
+ return status; /* telnet session ended */
+ }
+ }
+}
+
+static int
+remote_cisco_wait (pid, status)
+ int pid;
+ struct target_waitstatus *status;
+{
+ if (minitelnet () != ENTER_DEBUG)
+ {
+ error ("Debugging session terminated by protocol error");
+ }
+ putpkt ("?");
+ return remote_wait (pid, status);
+}
+
+static void
+init_remote_cisco_ops ()
+{
+ remote_cisco_ops.to_shortname = "cisco";
+ remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol";
+ remote_cisco_ops.to_doc =
+ "Use a remote machine via TCP, using a cisco-specific protocol.\n\
+Specify the serial device it is connected to (e.g. host:2020).";
+ remote_cisco_ops.to_open = remote_cisco_open;
+ remote_cisco_ops.to_close = remote_cisco_close;
+ remote_cisco_ops.to_detach = remote_detach;
+ remote_cisco_ops.to_resume = remote_resume;
+ remote_cisco_ops.to_wait = remote_cisco_wait;
+ remote_cisco_ops.to_fetch_registers = remote_fetch_registers;
+ remote_cisco_ops.to_store_registers = remote_store_registers;
+ remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store;
+ remote_cisco_ops.to_xfer_memory = remote_xfer_memory;
+ remote_cisco_ops.to_files_info = remote_files_info;
+ remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint;
+ remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint;
+ remote_cisco_ops.to_kill = remote_kill;
+ remote_cisco_ops.to_load = generic_load;
+ remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn;
+ remote_cisco_ops.to_thread_alive = remote_thread_alive;
+ remote_cisco_ops.to_find_new_threads = remote_threads_info;
+ remote_cisco_ops.to_stratum = process_stratum;
+ remote_cisco_ops.to_has_all_memory = 1;
+ remote_cisco_ops.to_has_memory = 1;
+ remote_cisco_ops.to_has_stack = 1;
+ remote_cisco_ops.to_has_registers = 1;
+ remote_cisco_ops.to_has_execution = 1;
+ remote_cisco_ops.to_magic = OPS_MAGIC;
+}
+
+/* Target async and target extended-async.
+
+ This are temporary targets, until it is all tested. Eventually
+ async support will be incorporated int the usual 'remote'
+ target. */
+
+static void
+init_remote_async_ops ()
+{
+ remote_async_ops.to_shortname = "async";
+ remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol";
+ remote_async_ops.to_doc =
+ "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).";
+ remote_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_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_store_registers = remote_store_registers;
+ remote_async_ops.to_prepare_to_store = remote_prepare_to_store;
+ remote_async_ops.to_xfer_memory = remote_xfer_memory;
+ 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_kill = remote_async_kill;
+ remote_async_ops.to_load = generic_load;
+ remote_async_ops.to_mourn_inferior = remote_async_mourn;
+ remote_async_ops.to_thread_alive = remote_thread_alive;
+ remote_async_ops.to_find_new_threads = remote_threads_info;
+ remote_async_ops.to_stop = remote_stop;
+ remote_async_ops.to_query = remote_query;
+ remote_async_ops.to_rcmd = remote_rcmd;
+ remote_async_ops.to_stratum = process_stratum;
+ remote_async_ops.to_has_all_memory = 1;
+ remote_async_ops.to_has_memory = 1;
+ remote_async_ops.to_has_stack = 1;
+ remote_async_ops.to_has_registers = 1;
+ remote_async_ops.to_has_execution = 1;
+ remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
+ remote_async_ops.to_has_async_exec = 1;
+ remote_async_ops.to_magic = OPS_MAGIC;
+}
+
+/* Set up the async extended remote vector by making a copy of the standard
+ remote vector and adding to it. */
+
+static void
+init_extended_async_remote_ops ()
+{
+ extended_async_remote_ops = remote_async_ops;
+
+ extended_async_remote_ops.to_shortname = "extended-async";
+ extended_async_remote_ops.to_longname =
+ "Extended remote serial target in async gdb-specific protocol";
+ extended_async_remote_ops.to_doc =
+ "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).",
+ extended_async_remote_ops.to_open = extended_remote_async_open;
+ extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior;
+ extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn;
+}
+
+static void
+set_remote_cmd (args, from_tty)
+ char *args;
+ int from_tty;
+{
+
+}
+
+
+static void
+build_remote_gdbarch_data ()
+{
+ tty_input = xmalloc (PBUFSIZ);
+}
void
_initialize_remote ()
{
+ static struct cmd_list_element *remote_set_cmdlist;
+ static struct cmd_list_element *remote_show_cmdlist;
+
+ /* architecture specific data */
+ build_remote_gdbarch_data ();
+ register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL);
+ register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data);
+
+ /* runtime constants - we retain the value of remote_write_size
+ across architecture swaps. */
+ remote_write_size = PBUFSIZ;
+
init_remote_ops ();
add_target (&remote_ops);
init_extended_remote_ops ();
add_target (&extended_remote_ops);
- init_remote_threads ();
+
+ init_remote_async_ops ();
+ add_target (&remote_async_ops);
+
+ init_extended_async_remote_ops ();
+ add_target (&extended_async_remote_ops);
+
+ init_remote_cisco_ops ();
+ add_target (&remote_cisco_ops);
+
#if 0
init_remote_threadtests ();
#endif
- add_cmd ("compare-sections", class_obscure, compare_sections_command,
+ add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\
+Remote protocol specific variables\n\
+Configure various remote-protocol specific variables such as\n\
+the packets being used",
+ &remote_set_cmdlist, "set remote ",
+ 0/*allow-unknown*/, &setlist);
+ add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\
+Remote protocol specific variables\n\
+Configure various remote-protocol specific variables such as\n\
+the packets being used",
+ &remote_show_cmdlist, "show remote ",
+ 0/*allow-unknown*/, &showlist);
+
+ add_cmd ("compare-sections", class_obscure, compare_sections_command,
"Compare section data on target to the exec file.\n\
-Argument is a single section name (default: all loaded sections).",
+Argument is a single section name (default: all loaded sections).",
&cmdlist);
add_cmd ("packet", class_maintenance, packet_command,
terminating `#' character and checksum.",
&maintenancelist);
- add_show_from_set
+ add_show_from_set
(add_set_cmd ("remotetimeout", no_class,
- var_integer, (char *)&remote_timeout,
+ var_integer, (char *) &remote_timeout,
"Set timeout value for remote read.\n",
&setlist),
&showlist);
- add_show_from_set
+ add_show_from_set
(add_set_cmd ("remotebreak", no_class,
- var_integer, (char *)&remote_break,
+ var_boolean, (char *) &remote_break,
"Set whether to send break if interrupted.\n",
&setlist),
&showlist);
- add_show_from_set
+ add_show_from_set
(add_set_cmd ("remotewritesize", no_class,
- var_integer, (char *)&remote_write_size,
- "Set the maximum number of bytes per memory write packet.\n",
+ var_integer, (char *) &remote_write_size,
+ "Set the maximum number of bytes per memory write packet.\n",
&setlist),
&showlist);
remote_address_size = TARGET_PTR_BIT;
- add_show_from_set
+ add_show_from_set
(add_set_cmd ("remoteaddresssize", class_obscure,
- var_integer, (char *)&remote_address_size,
+ var_integer, (char *) &remote_address_size,
"Set the maximum size of the address (in bits) \
in a memory packet.\n",
&setlist),
- &showlist);
+ &showlist);
+
+ add_packet_config_cmd (&remote_protocol_binary_download,
+ "X", "binary-download",
+ set_remote_protocol_binary_download_cmd,
+ show_remote_protocol_binary_download_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist);
+#if 0
+ /* XXXX - should ``set remotebinarydownload'' be retained for
+ compatibility. */
+ add_show_from_set
+ (add_set_cmd ("remotebinarydownload", no_class,
+ var_boolean, (char *) &remote_binary_download,
+ "Set binary downloads.\n", &setlist),
+ &showlist);
+#endif
+
+ add_info ("remote-process", remote_info_process,
+ "Query the remote system for process info.");
+
+ add_packet_config_cmd (&remote_protocol_P, "P", "set-register",
+ set_remote_protocol_P_packet_cmd,
+ show_remote_protocol_P_packet_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist);
+
+ add_packet_config_cmd (&remote_protocol_Z, "Z", "breakpoint",
+ set_remote_protocol_Z_packet_cmd,
+ show_remote_protocol_Z_packet_cmd,
+ &remote_set_cmdlist, &remote_show_cmdlist);
}
projects / thirdparty / binutils-gdb.git / blobdiff