/* General utility routines for the remote server for GDB.
- Copyright (C) 1986, 1989, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1989, 1993, 1995, 1996, 1997, 1999, 2000, 2002, 2003,
+ 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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 3 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.
+ 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. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include <stdio.h>
#include <string.h>
+#include <stdlib.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#ifdef IN_PROCESS_AGENT
+# define PREFIX "ipa: "
+# define TOOLNAME "GDBserver in-process agent"
+#else
+# define PREFIX "gdbserver: "
+# define TOOLNAME "GDBserver"
+#endif
/* Generally useful subroutines used throughout the program. */
+static void malloc_failure (size_t size) ATTR_NORETURN;
+
+static void
+malloc_failure (size_t size)
+{
+ fprintf (stderr,
+ PREFIX "ran out of memory while trying to allocate %lu bytes\n",
+ (unsigned long) size);
+ exit (1);
+}
+
+/* Allocate memory without fail.
+ If malloc fails, this will print a message to stderr and exit. */
+
+void *
+xmalloc (size_t size)
+{
+ void *newmem;
+
+ if (size == 0)
+ size = 1;
+ newmem = malloc (size);
+ if (!newmem)
+ malloc_failure (size);
+
+ return newmem;
+}
+
+/* Reallocate memory without fail. This works like xmalloc. */
+
+void *
+xrealloc (void *ptr, size_t size)
+{
+ void *val;
+
+ if (size == 0)
+ size = 1;
+
+ if (ptr != NULL)
+ val = realloc (ptr, size); /* OK: realloc */
+ else
+ val = malloc (size); /* OK: malloc */
+ if (val == NULL)
+ malloc_failure (size);
+
+ return val;
+}
+
+/* Allocate memory without fail and set it to zero.
+ If malloc fails, this will print a message to stderr and exit. */
+
+void *
+xcalloc (size_t nelem, size_t elsize)
+{
+ void *newmem;
+
+ if (nelem == 0 || elsize == 0)
+ nelem = elsize = 1;
+
+ newmem = calloc (nelem, elsize);
+ if (!newmem)
+ malloc_failure (nelem * elsize);
+
+ return newmem;
+}
+
+/* Copy a string into a memory buffer.
+ If malloc fails, this will print a message to stderr and exit. */
+
+char *
+xstrdup (const char *s)
+{
+ char *ret = strdup (s);
+ if (ret == NULL)
+ malloc_failure (strlen (s) + 1);
+ return ret;
+}
+
+#ifndef IN_PROCESS_AGENT
+
+/* Free a standard argv vector. */
+
+void
+freeargv (char **vector)
+{
+ char **scan;
+
+ if (vector != NULL)
+ {
+ for (scan = vector; *scan != NULL; scan++)
+ {
+ free (*scan);
+ }
+ free (vector);
+ }
+}
+
+#endif
+
/* Print the system error message for errno, and also mention STRING
as the file name for which the error was encountered.
Then return to command level. */
void
-perror_with_name (string)
- char *string;
+perror_with_name (const char *string)
{
- extern int sys_nerr;
- extern char *sys_errlist[];
- extern int errno;
- char *err;
+ const char *err;
char *combined;
- if (errno < sys_nerr)
- err = sys_errlist[errno];
- else
+ err = strerror (errno);
+ if (err == NULL)
err = "unknown error";
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
STRING is the error message, used as a fprintf string,
and ARG is passed as an argument to it. */
-#ifdef ANSI_PROTOTYPES
-NORETURN void
-error (const char *string, ...)
-#else
void
-error (va_alist)
- va_dcl
-#endif
+error (const char *string,...)
{
+#ifndef IN_PROCESS_AGENT
extern jmp_buf toplevel;
+#endif
va_list args;
-#ifdef ANSI_PROTOTYPES
va_start (args, string);
-#else
- va_start (args);
-#endif
fflush (stdout);
-#ifdef ANSI_PROTOTYPES
vfprintf (stderr, string, args);
+ fprintf (stderr, "\n");
+#ifndef IN_PROCESS_AGENT
+ longjmp (toplevel, 1);
#else
- {
- char *string1;
-
- string1 = va_arg (args, char *);
- vfprintf (stderr, string1, args);
- }
+ exit (1);
#endif
- fprintf (stderr, "\n");
- longjmp(toplevel, 1);
}
/* Print an error message and exit reporting failure.
STRING and ARG are passed to fprintf. */
/* VARARGS */
-NORETURN void
-#ifdef ANSI_PROTOTYPES
-fatal (char *string, ...)
-#else
-fatal (va_alist)
- va_dcl
-#endif
+void
+fatal (const char *string,...)
{
va_list args;
-#ifdef ANSI_PROTOTYPES
va_start (args, string);
-#else
- char *string;
- va_start (args);
- string = va_arg (args, char *);
-#endif
- fprintf (stderr, "gdb: ");
+ fprintf (stderr, PREFIX);
+ vfprintf (stderr, string, args);
+ fprintf (stderr, "\n");
+ va_end (args);
+ exit (1);
+}
+
+/* VARARGS */
+void
+warning (const char *string,...)
+{
+ va_list args;
+ va_start (args, string);
+ fprintf (stderr, PREFIX);
vfprintf (stderr, string, args);
fprintf (stderr, "\n");
va_end (args);
+}
+
+/* Report a problem internal to GDBserver, and exit. */
+
+void
+internal_error (const char *file, int line, const char *fmt, ...)
+{
+ va_list args;
+ va_start (args, fmt);
+
+ fprintf (stderr, "\
+%s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line);
+ vfprintf (stderr, fmt, args);
+ fprintf (stderr, "\n");
+ va_end (args);
exit (1);
}
+
+/* Temporary storage using circular buffer. */
+#define NUMCELLS 10
+#define CELLSIZE 50
+
+/* Return the next entry in the circular buffer. */
+
+static char *
+get_cell (void)
+{
+ static char buf[NUMCELLS][CELLSIZE];
+ static int cell = 0;
+ if (++cell >= NUMCELLS)
+ cell = 0;
+ return buf[cell];
+}
+
+/* Stdarg wrapper around vsnprintf.
+ SIZE is the size of the buffer pointed to by STR. */
+
+int
+xsnprintf (char *str, size_t size, const char *format, ...)
+{
+ va_list args;
+ int ret;
+
+ va_start (args, format);
+ ret = vsnprintf (str, size, format, args);
+ va_end (args);
+
+ return ret;
+}
+
+static char *
+decimal2str (char *sign, ULONGEST addr, int width)
+{
+ /* Steal code from valprint.c:print_decimal(). Should this worry
+ about the real size of addr as the above does? */
+ unsigned long temp[3];
+ char *str = get_cell ();
+
+ int i = 0;
+ do
+ {
+ temp[i] = addr % (1000 * 1000 * 1000);
+ addr /= (1000 * 1000 * 1000);
+ i++;
+ width -= 9;
+ }
+ while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
+
+ width = 9;
+ if (width < 0)
+ width = 0;
+
+ switch (i)
+ {
+ case 1:
+ xsnprintf (str, CELLSIZE, "%s%0*lu", sign, width, temp[0]);
+ break;
+ case 2:
+ xsnprintf (str, CELLSIZE, "%s%0*lu%09lu", sign, width,
+ temp[1], temp[0]);
+ break;
+ case 3:
+ xsnprintf (str, CELLSIZE, "%s%0*lu%09lu%09lu", sign, width,
+ temp[2], temp[1], temp[0]);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "failed internal consistency check");
+ }
+
+ return str;
+}
+
+/* %u for ULONGEST. The result is stored in a circular static buffer,
+ NUMCELLS deep. */
+
+char *
+pulongest (ULONGEST u)
+{
+ return decimal2str ("", u, 0);
+}
+
+/* %d for LONGEST. The result is stored in a circular static buffer,
+ NUMCELLS deep. */
+
+char *
+plongest (LONGEST l)
+{
+ if (l < 0)
+ return decimal2str ("-", -l, 0);
+ else
+ return decimal2str ("", l, 0);
+}
+
+/* Eliminate warning from compiler on 32-bit systems. */
+static int thirty_two = 32;
+
+/* Convert a ULONGEST into a HEX string, like %lx. The result is
+ stored in a circular static buffer, NUMCELLS deep. */
+
+char *
+phex_nz (ULONGEST l, int sizeof_l)
+{
+ char *str;
+
+ switch (sizeof_l)
+ {
+ case 8:
+ {
+ unsigned long high = (unsigned long) (l >> thirty_two);
+ str = get_cell ();
+ if (high == 0)
+ xsnprintf (str, CELLSIZE, "%lx",
+ (unsigned long) (l & 0xffffffff));
+ else
+ xsnprintf (str, CELLSIZE, "%lx%08lx", high,
+ (unsigned long) (l & 0xffffffff));
+ break;
+ }
+ case 4:
+ str = get_cell ();
+ xsnprintf (str, CELLSIZE, "%lx", (unsigned long) l);
+ break;
+ case 2:
+ str = get_cell ();
+ xsnprintf (str, CELLSIZE, "%x", (unsigned short) (l & 0xffff));
+ break;
+ default:
+ str = phex_nz (l, sizeof (l));
+ break;
+ }
+
+ return str;
+}
+
+/* Convert a CORE_ADDR into a HEX string, like %lx.
+ The result is stored in a circular static buffer, NUMCELLS deep. */
+
+char *
+paddress (CORE_ADDR addr)
+{
+ return phex_nz (addr, sizeof (CORE_ADDR));
+}
+
+/* Convert a file descriptor into a printable string. */
+
+char *
+pfildes (gdb_fildes_t fd)
+{
+#if USE_WIN32API
+ return phex_nz (fd, sizeof (gdb_fildes_t));
+#else
+ return plongest (fd);
+#endif
+}
projects / deliverable / binutils-gdb.git / blobdiff