old-cross-binutils/gdb/ser-tcp.c

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/* Serial interface for raw TCP connections on Un*x like systems
Copyright 1992, 1993 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
1995-08-02 03:41:12 +00:00
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "serial.h"
#include <sys/types.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#ifndef __CYGWIN32__
#include <netinet/tcp.h>
#endif
#include "signals.h"
* core-aout.c (fetch_core_registers): Cast core_reg_size to int before testing against reg_ptr. * eval.c (evaluate_subexp_standard): Cast type of TYPE_FN_FIELD_VOFFSET to int. * findvar.c (extract_signed_integer, extract_unsigned_integer, extract_long_unsigned_integer): Cast type of sizeof to int. * values.c (unpack_field_as_long, modify_field): Ditto. * valops.c (value_assign, call_function_by_hand): Ditto. * infcmd.c (do_registers_info): Ditto. * ser-tcp.c (tcp_open): Ditto * remote.c (putpkt): Ditto. * dcache.c (dcache_peek): Ditto. * dcache.c (dcache_poke): Ditto. * m2-exp.y (yylex): Ditto. * gnu-regex.c (re_match_2): Ditto. * f-lang.c (ADD_BF_SYMNUM, saved_bf_list_end, tmp_bf_ptr): Ifdef out unused macro definition and variables. * inftarg.c (proc_wait): Move from main.c to here, and make static. * valprint.c (val_print_string): Change bufsize from int to unsigned. * main.c (wait.h): Include * top.c (command_line_input): Remove unused variable "c". * f-typeprint.c (f_type_print_varspec_prefix): Add missing enum value TYPE_CODE_TYPEDEF to switch statement. (f_type_print_varspec_suffix): Add missing enum value TYPE_CODE_TYPEDEF to switch statement. * ch-exp.c (parse_primval): Add remaining enumeration values to switch statement, with no specific action. (ch_lex): Add LOC_UNRESOLVED in switch statement. (pushback_token): Ifdef out, since code using it is ifdef'd out. * stabsread.c (cleanup_undefined_types): Remove unused label "badtype". * objfiles.h (print_symbol_bcache_statistics): Add prototype. * maint.c (objfiles.h): Include. (maintenance_print_statistics): Remove unused variable "temp". * minsyms.c (lookup_minimal_symbol_solib_trampoline): Remove unused variable "found_file_symbol". * m2-exp.y (yylex): Add LOC_UNRESOLVED case to switch. * language.c (lang_bool_type): Use existing function local type variable rather than create block local variables. * solib.c (disable_break): Enclose in ifndef SVR4_SHARED_LIBS. * infptrace.c (wait.h, command.h): Include. * ser-tcp.c (gdb_string.h): Include * i386-tdep.c (codestream_seek): Change "place" to CORE_ADDR. (i386_get_frame_setup): Change "pc" from int to CORE_ADDR. * command.c (complete_on_enum): Make assignment used as truth value explictly check against NULL. (wait.h): Include. * infrun.c (wait_for_inferior): Ifdef out prologue_pc since code that uses it is ifdef'd out. * parser-defs.h: Add prototype for write_dollar_variable. * infrun.c: Add prototype for write_pc_pid. * breakpoint.h: Add prototype for re_enable_breakpoints_in_shlibs. * symmisc.c (bcache.h): Include. * bcache.h: Add prototype for print_bcache_statistics. * symfile.c: Include <time.h>. * printcmd.c (print_scalar_formatted): Change len to unsigned int. * valarith.c (value_equal): Cast result of TYPE_LENGTH to int. * valarith.c (value_binop): Change result_len, promoted_len1, and promoted_len2 to unsigned int. * valarith.c (value_subscripted_rvalue): Change elt_offs and elt_size to unsigned int. * valops.c (value_array): Change typelength to unsigned int. (destructor_name_p): Change len to unsigned int. * scm-lang.h (scm_parse): Add prototype for scm_unpack. * symfile.c (decrement_reading_symtab): Change return type to void. * valarith.c (value_subscript): Remove unused variable "word". (value_subscript): Remove unused variable "tint". * valops.c (auto_abandon): Ifdef out, since code using it is also ifdef'd out. * eval.c (init_array_element): Remove unused variable "val". * Makefile.in (values.o): Depends on scm-lang.h. (command.o): Depends upon wait_h. (ser-tcp.o): Depends upon gdb_string.h. (infptrace.o): Depends upon wait_h and command_h. (maint.o): Depends on objfiles.h and symfile.h. * values.c (allocate_repeat_value): Remove unused variable "element_type". (scm-lang.h): Include. * breakpoint.c (create_longjmp_breakpoint): Enclose in GET_LONGJMP_TARGET define, unused otherwise. * config/i386/nm-linux.h: Add prototypes for i386_insert_watchpoint, i386_remove_watchpoint and i386_stopped_by_watchpoint.
1996-03-30 05:45:10 +00:00
#include "gdb_string.h"
struct tcp_ttystate
{
int bogus;
};
static int tcp_open PARAMS ((serial_t scb, const char *name));
static void tcp_raw PARAMS ((serial_t scb));
static int wait_for PARAMS ((serial_t scb, int timeout));
static int tcp_readchar PARAMS ((serial_t scb, int timeout));
static int tcp_setbaudrate PARAMS ((serial_t scb, int rate));
static int tcp_setstopbits PARAMS ((serial_t scb, int num));
static int tcp_write PARAMS ((serial_t scb, const char *str, int len));
1993-09-08 20:57:08 +00:00
/* FIXME: static void tcp_restore PARAMS ((serial_t scb)); */
static void tcp_close PARAMS ((serial_t scb));
static serial_ttystate tcp_get_tty_state PARAMS ((serial_t scb));
static int tcp_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
static int tcp_return_0 PARAMS ((serial_t));
static int tcp_noflush_set_tty_state PARAMS ((serial_t, serial_ttystate,
serial_ttystate));
static void tcp_print_tty_state PARAMS ((serial_t, serial_ttystate));
/* Open up a raw tcp socket */
static int
tcp_open(scb, name)
serial_t scb;
const char *name;
{
char *port_str;
int port;
struct hostent *hostent;
struct sockaddr_in sockaddr;
int tmp;
char hostname[100];
struct protoent *protoent;
1995-06-08 22:45:47 +00:00
int i;
port_str = strchr (name, ':');
if (!port_str)
error ("tcp_open: No colon in host name!"); /* Shouldn't ever happen */
* core-aout.c (fetch_core_registers): Cast core_reg_size to int before testing against reg_ptr. * eval.c (evaluate_subexp_standard): Cast type of TYPE_FN_FIELD_VOFFSET to int. * findvar.c (extract_signed_integer, extract_unsigned_integer, extract_long_unsigned_integer): Cast type of sizeof to int. * values.c (unpack_field_as_long, modify_field): Ditto. * valops.c (value_assign, call_function_by_hand): Ditto. * infcmd.c (do_registers_info): Ditto. * ser-tcp.c (tcp_open): Ditto * remote.c (putpkt): Ditto. * dcache.c (dcache_peek): Ditto. * dcache.c (dcache_poke): Ditto. * m2-exp.y (yylex): Ditto. * gnu-regex.c (re_match_2): Ditto. * f-lang.c (ADD_BF_SYMNUM, saved_bf_list_end, tmp_bf_ptr): Ifdef out unused macro definition and variables. * inftarg.c (proc_wait): Move from main.c to here, and make static. * valprint.c (val_print_string): Change bufsize from int to unsigned. * main.c (wait.h): Include * top.c (command_line_input): Remove unused variable "c". * f-typeprint.c (f_type_print_varspec_prefix): Add missing enum value TYPE_CODE_TYPEDEF to switch statement. (f_type_print_varspec_suffix): Add missing enum value TYPE_CODE_TYPEDEF to switch statement. * ch-exp.c (parse_primval): Add remaining enumeration values to switch statement, with no specific action. (ch_lex): Add LOC_UNRESOLVED in switch statement. (pushback_token): Ifdef out, since code using it is ifdef'd out. * stabsread.c (cleanup_undefined_types): Remove unused label "badtype". * objfiles.h (print_symbol_bcache_statistics): Add prototype. * maint.c (objfiles.h): Include. (maintenance_print_statistics): Remove unused variable "temp". * minsyms.c (lookup_minimal_symbol_solib_trampoline): Remove unused variable "found_file_symbol". * m2-exp.y (yylex): Add LOC_UNRESOLVED case to switch. * language.c (lang_bool_type): Use existing function local type variable rather than create block local variables. * solib.c (disable_break): Enclose in ifndef SVR4_SHARED_LIBS. * infptrace.c (wait.h, command.h): Include. * ser-tcp.c (gdb_string.h): Include * i386-tdep.c (codestream_seek): Change "place" to CORE_ADDR. (i386_get_frame_setup): Change "pc" from int to CORE_ADDR. * command.c (complete_on_enum): Make assignment used as truth value explictly check against NULL. (wait.h): Include. * infrun.c (wait_for_inferior): Ifdef out prologue_pc since code that uses it is ifdef'd out. * parser-defs.h: Add prototype for write_dollar_variable. * infrun.c: Add prototype for write_pc_pid. * breakpoint.h: Add prototype for re_enable_breakpoints_in_shlibs. * symmisc.c (bcache.h): Include. * bcache.h: Add prototype for print_bcache_statistics. * symfile.c: Include <time.h>. * printcmd.c (print_scalar_formatted): Change len to unsigned int. * valarith.c (value_equal): Cast result of TYPE_LENGTH to int. * valarith.c (value_binop): Change result_len, promoted_len1, and promoted_len2 to unsigned int. * valarith.c (value_subscripted_rvalue): Change elt_offs and elt_size to unsigned int. * valops.c (value_array): Change typelength to unsigned int. (destructor_name_p): Change len to unsigned int. * scm-lang.h (scm_parse): Add prototype for scm_unpack. * symfile.c (decrement_reading_symtab): Change return type to void. * valarith.c (value_subscript): Remove unused variable "word". (value_subscript): Remove unused variable "tint". * valops.c (auto_abandon): Ifdef out, since code using it is also ifdef'd out. * eval.c (init_array_element): Remove unused variable "val". * Makefile.in (values.o): Depends on scm-lang.h. (command.o): Depends upon wait_h. (ser-tcp.o): Depends upon gdb_string.h. (infptrace.o): Depends upon wait_h and command_h. (maint.o): Depends on objfiles.h and symfile.h. * values.c (allocate_repeat_value): Remove unused variable "element_type". (scm-lang.h): Include. * breakpoint.c (create_longjmp_breakpoint): Enclose in GET_LONGJMP_TARGET define, unused otherwise. * config/i386/nm-linux.h: Add prototypes for i386_insert_watchpoint, i386_remove_watchpoint and i386_stopped_by_watchpoint.
1996-03-30 05:45:10 +00:00
tmp = min (port_str - name, (int) sizeof hostname - 1);
strncpy (hostname, name, tmp); /* Don't want colon */
hostname[tmp] = '\000'; /* Tie off host name */
port = atoi (port_str + 1);
hostent = gethostbyname (hostname);
if (!hostent)
{
fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
errno = ENOENT;
return -1;
}
for (i = 1; i <= 15; i++)
{
scb->fd = socket (PF_INET, SOCK_STREAM, 0);
if (scb->fd < 0)
return -1;
/* Allow rapid reuse of this port. */
tmp = 1;
setsockopt (scb->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&tmp, sizeof(tmp));
/* Enable TCP keep alive process. */
tmp = 1;
setsockopt (scb->fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&tmp, sizeof(tmp));
sockaddr.sin_family = PF_INET;
sockaddr.sin_port = htons(port);
memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
sizeof (struct in_addr));
if (!connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof(sockaddr)))
break;
close (scb->fd);
scb->fd = -1;
/* We retry for ECONNREFUSED because that is often a temporary condition, which
happens when the server is being restarted. */
if (errno != ECONNREFUSED)
return -1;
sleep (1);
}
protoent = getprotobyname ("tcp");
if (!protoent)
return -1;
tmp = 1;
if (setsockopt (scb->fd, protoent->p_proto, TCP_NODELAY,
(char *)&tmp, sizeof(tmp)))
return -1;
signal(SIGPIPE, SIG_IGN); /* If we don't do this, then GDB simply exits
when the remote side dies. */
return 0;
}
static serial_ttystate
tcp_get_tty_state(scb)
serial_t scb;
{
struct tcp_ttystate *state;
state = (struct tcp_ttystate *)xmalloc(sizeof *state);
return (serial_ttystate)state;
}
static int
tcp_set_tty_state(scb, ttystate)
serial_t scb;
serial_ttystate ttystate;
{
struct tcp_ttystate *state;
state = (struct tcp_ttystate *)ttystate;
return 0;
}
static int
tcp_return_0 (scb)
serial_t scb;
{
return 0;
}
static void
tcp_raw(scb)
serial_t scb;
{
return; /* Always in raw mode */
}
/* Wait for input on scb, with timeout seconds. Returns 0 on success,
otherwise SERIAL_TIMEOUT or SERIAL_ERROR.
For termio{s}, we actually just setup VTIME if necessary, and let the
timeout occur in the read() in tcp_read().
*/
static int
wait_for(scb, timeout)
serial_t scb;
int timeout;
{
int numfds;
struct timeval tv;
fd_set readfds, exceptfds;
FD_ZERO (&readfds);
FD_ZERO (&exceptfds);
tv.tv_sec = timeout;
tv.tv_usec = 0;
FD_SET(scb->fd, &readfds);
FD_SET(scb->fd, &exceptfds);
while (1)
{
if (timeout >= 0)
numfds = select(scb->fd+1, &readfds, 0, &exceptfds, &tv);
else
numfds = select(scb->fd+1, &readfds, 0, &exceptfds, 0);
if (numfds <= 0)
if (numfds == 0)
return SERIAL_TIMEOUT;
else if (errno == EINTR)
continue;
else
return SERIAL_ERROR; /* Got an error from select or poll */
return 0;
}
}
/* Read a character with user-specified timeout. TIMEOUT is number of seconds
to wait, or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
char if successful. Returns -2 if timeout expired, EOF if line dropped
dead, or -3 for any other error (see errno in that case). */
static int
tcp_readchar(scb, timeout)
serial_t scb;
int timeout;
{
int status;
if (scb->bufcnt-- > 0)
return *scb->bufp++;
status = wait_for(scb, timeout);
if (status < 0)
return status;
* configure.in: Add nlm subdir to configdirs for alpha-*-netware target. * defs.h (enum language): Add language_asm. * findvar.c (read_register_bytes read_register_gen write_register_bytes read_register read_register_pid write_register write_register_pid supply_register): Move multi- thread handling down into these routines. Create XXX_pid routines that allow register references to specify the pid. * findvar.c infcmd.c (read_pc read_pc_pid write_pc write_pc_pid read_sp write_sp read_fp write_fp): Move these routines from infcmd to findvar to centralize the whole mess. * i386-nlmstub.c: Portability fixes. * infptrace.c (child_resume): Conditionalize to allow other natives to override it. Remove PIDGET gubbish, it's no longer necessary. * infrun.c (wait_for_inferior): Put registers_changed() before target_wait() to speed up remote debugging. * Replace code that reads registers from other threads with much nicer looking new function calls (see changes to findvar.c). * Don't skip prologues if debugging assembly source. * lynx-nat.c (child_resume): Lynx now needs it's own version of child_resume to handle multi-thread debugging properly. * remote.c: Add O response to get console output from target. * (readchar): Add timeout parameter. Handle SERIAL_EOF and SERIAL_ERROR here to simplify callers. * Change static var timeout to remote_timeout. * (fromhex): Remove unnecessary return -1 at end of routine. * (remote_wait): Turn this into a big switch statement. Add support for O response. * (putpkt): Remove unnecessary handling of SERIAL_EOF/ERROR. * (getpkt): Split getpkt into two parts. read_frame deals with all formatting issues, run-length encoding, and framing. getpkt now handles error recovery, and frame detection. * ser-tcp.c (tcp_readchar): Handle EINTR from read(). * ser-unix.c (hardwire_raw): Set CLOCAL so that we ignore modem control. (hardwire_readchar): Handle EINTR from read(). * symfile.c (deduce_language_from_filename): Add support for .s files. * config/nm-lynx.h: Define CHILD_WAIT so that lynx-nat.c can override infptrace's child_wait. * config/rs6000/rs6000lynx.mh: Use xm-rs6000ly.h & nm-rs6000ly.h instead of XXXlynx.h. * config/rs6000/rs6000lynx.mt: Use tm-rs6000ly.h instead of tm-rs6000lynx.h. * nlm/gdbserve.c: Portability fixes.
1994-06-02 16:58:48 +00:00
while (1)
{
scb->bufcnt = read(scb->fd, scb->buf, BUFSIZ);
if (scb->bufcnt != -1 || errno != EINTR)
break;
}
if (scb->bufcnt <= 0)
if (scb->bufcnt == 0)
return SERIAL_TIMEOUT; /* 0 chars means timeout [may need to
distinguish between EOF & timeouts
someday] */
else
return SERIAL_ERROR; /* Got an error from read */
scb->bufcnt--;
scb->bufp = scb->buf;
return *scb->bufp++;
}
static int
tcp_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
serial_t scb;
serial_ttystate new_ttystate;
serial_ttystate old_ttystate;
{
return 0;
}
static void
tcp_print_tty_state (scb, ttystate)
serial_t scb;
serial_ttystate ttystate;
{
/* Nothing to print. */
return;
}
static int
tcp_setbaudrate(scb, rate)
serial_t scb;
int rate;
{
return 0; /* Never fails! */
}
static int
tcp_setstopbits(scb, num)
serial_t scb;
int num;
{
return 0; /* Never fails! */
}
static int
tcp_write(scb, str, len)
serial_t scb;
const char *str;
int len;
{
int cc;
while (len > 0)
{
cc = write(scb->fd, str, len);
if (cc < 0)
return 1;
len -= cc;
str += cc;
}
return 0;
}
static void
tcp_close(scb)
serial_t scb;
{
if (scb->fd < 0)
return;
close(scb->fd);
scb->fd = -1;
}
static struct serial_ops tcp_ops =
{
"tcp",
0,
tcp_open,
tcp_close,
tcp_readchar,
tcp_write,
tcp_return_0, /* flush output */
tcp_return_0, /* flush input */
tcp_return_0, /* send break */
tcp_raw,
tcp_get_tty_state,
tcp_set_tty_state,
tcp_print_tty_state,
tcp_noflush_set_tty_state,
tcp_setbaudrate,
tcp_setstopbits,
};
void
_initialize_ser_tcp ()
{
serial_add_interface (&tcp_ops);
}