mirror of
https://sourceware.org/git/binutils-gdb.git
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28e7fd6234
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
305 lines
6.4 KiB
C
305 lines
6.4 KiB
C
/* General utility routines for the remote server for GDB.
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Copyright (C) 1986-2013 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef IN_PROCESS_AGENT
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# define PREFIX "ipa: "
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# define TOOLNAME "GDBserver in-process agent"
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#else
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# define PREFIX "gdbserver: "
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# define TOOLNAME "GDBserver"
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#endif
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/* Generally useful subroutines used throughout the program. */
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void
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malloc_failure (long size)
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{
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fprintf (stderr,
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PREFIX "ran out of memory while trying to allocate %lu bytes\n",
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(unsigned long) size);
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exit (1);
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}
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/* Copy a string into a memory buffer.
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If malloc fails, this will print a message to stderr and exit. */
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char *
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xstrdup (const char *s)
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{
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char *ret = strdup (s);
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if (ret == NULL)
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malloc_failure (strlen (s) + 1);
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return ret;
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}
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#ifndef IN_PROCESS_AGENT
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/* Free a standard argv vector. */
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void
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freeargv (char **vector)
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{
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char **scan;
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if (vector != NULL)
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{
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for (scan = vector; *scan != NULL; scan++)
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{
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free (*scan);
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}
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free (vector);
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}
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}
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#endif
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/* Print the system error message for errno, and also mention STRING
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as the file name for which the error was encountered.
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Then return to command level. */
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void
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perror_with_name (const char *string)
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{
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const char *err;
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char *combined;
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err = strerror (errno);
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if (err == NULL)
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err = "unknown error";
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combined = (char *) alloca (strlen (err) + strlen (string) + 3);
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strcpy (combined, string);
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strcat (combined, ": ");
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strcat (combined, err);
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error ("%s.", combined);
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}
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/* Print an error message and return to command level.
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STRING is the error message, used as a fprintf string,
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and ARG is passed as an argument to it. */
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void
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error (const char *string,...)
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{
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#ifndef IN_PROCESS_AGENT
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extern jmp_buf toplevel;
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#endif
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va_list args;
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va_start (args, string);
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fflush (stdout);
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vfprintf (stderr, string, args);
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fprintf (stderr, "\n");
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#ifndef IN_PROCESS_AGENT
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longjmp (toplevel, 1);
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#else
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exit (1);
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#endif
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}
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/* Print an error message and exit reporting failure.
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This is for a error that we cannot continue from.
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STRING and ARG are passed to fprintf. */
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/* VARARGS */
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void
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fatal (const char *string,...)
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{
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va_list args;
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va_start (args, string);
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fprintf (stderr, PREFIX);
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vfprintf (stderr, string, args);
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fprintf (stderr, "\n");
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va_end (args);
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exit (1);
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}
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/* VARARGS */
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void
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warning (const char *string,...)
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{
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va_list args;
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va_start (args, string);
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fprintf (stderr, PREFIX);
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vfprintf (stderr, string, args);
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fprintf (stderr, "\n");
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va_end (args);
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}
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/* Report a problem internal to GDBserver, and exit. */
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void
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internal_error (const char *file, int line, const char *fmt, ...)
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{
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va_list args;
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va_start (args, fmt);
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fprintf (stderr, "\
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%s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line);
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vfprintf (stderr, fmt, args);
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fprintf (stderr, "\n");
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va_end (args);
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exit (1);
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}
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/* Temporary storage using circular buffer. */
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#define NUMCELLS 10
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#define CELLSIZE 50
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/* Return the next entry in the circular buffer. */
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static char *
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get_cell (void)
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{
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static char buf[NUMCELLS][CELLSIZE];
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static int cell = 0;
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if (++cell >= NUMCELLS)
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cell = 0;
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return buf[cell];
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}
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static char *
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decimal2str (char *sign, ULONGEST addr)
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{
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/* Steal code from valprint.c:print_decimal(). Should this worry
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about the real size of addr as the above does? */
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unsigned long temp[3];
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char *str = get_cell ();
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int i = 0;
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int width = 9;
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do
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{
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temp[i] = addr % (1000 * 1000 * 1000);
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addr /= (1000 * 1000 * 1000);
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i++;
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}
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while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
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switch (i)
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{
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case 1:
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xsnprintf (str, CELLSIZE, "%s%0*lu", sign, width, temp[0]);
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break;
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case 2:
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xsnprintf (str, CELLSIZE, "%s%0*lu%09lu", sign, width,
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temp[1], temp[0]);
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break;
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case 3:
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xsnprintf (str, CELLSIZE, "%s%0*lu%09lu%09lu", sign, width,
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temp[2], temp[1], temp[0]);
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break;
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default:
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internal_error (__FILE__, __LINE__,
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"failed internal consistency check");
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}
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return str;
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}
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/* %u for ULONGEST. The result is stored in a circular static buffer,
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NUMCELLS deep. */
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char *
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pulongest (ULONGEST u)
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{
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return decimal2str ("", u);
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}
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/* %d for LONGEST. The result is stored in a circular static buffer,
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NUMCELLS deep. */
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char *
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plongest (LONGEST l)
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{
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if (l < 0)
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return decimal2str ("-", -l);
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else
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return decimal2str ("", l);
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}
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/* Eliminate warning from compiler on 32-bit systems. */
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static int thirty_two = 32;
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/* Convert a ULONGEST into a HEX string, like %lx. The result is
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stored in a circular static buffer, NUMCELLS deep. */
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char *
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phex_nz (ULONGEST l, int sizeof_l)
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{
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char *str;
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switch (sizeof_l)
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{
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case 8:
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{
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unsigned long high = (unsigned long) (l >> thirty_two);
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str = get_cell ();
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if (high == 0)
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xsnprintf (str, CELLSIZE, "%lx",
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(unsigned long) (l & 0xffffffff));
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else
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xsnprintf (str, CELLSIZE, "%lx%08lx", high,
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(unsigned long) (l & 0xffffffff));
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break;
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}
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case 4:
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str = get_cell ();
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xsnprintf (str, CELLSIZE, "%lx", (unsigned long) l);
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break;
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case 2:
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str = get_cell ();
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xsnprintf (str, CELLSIZE, "%x", (unsigned short) (l & 0xffff));
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break;
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default:
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str = phex_nz (l, sizeof (l));
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break;
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}
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return str;
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}
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/* Convert a CORE_ADDR into a HEX string, like %lx.
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The result is stored in a circular static buffer, NUMCELLS deep. */
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char *
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paddress (CORE_ADDR addr)
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{
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return phex_nz (addr, sizeof (CORE_ADDR));
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}
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/* Convert a file descriptor into a printable string. */
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char *
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pfildes (gdb_fildes_t fd)
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{
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#if USE_WIN32API
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return phex_nz (fd, sizeof (gdb_fildes_t));
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#else
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return plongest (fd);
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#endif
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}
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