GDBserver
utils.c
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1 /* General utility routines for the remote server for GDB.
2  Copyright (C) 1986-2015 Free Software Foundation, Inc.
3 
4  This file is part of GDB.
5 
6  This program is free software; you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation; either version 3 of the License, or
9  (at your option) any later version.
10 
11  This program is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  GNU General Public License for more details.
15 
16  You should have received a copy of the GNU General Public License
17  along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 
19 #include "server.h"
20 
21 #ifdef IN_PROCESS_AGENT
22 # define PREFIX "ipa: "
23 # define TOOLNAME "GDBserver in-process agent"
24 #else
25 # define PREFIX "gdbserver: "
26 # define TOOLNAME "GDBserver"
27 #endif
28 
29 /* Generally useful subroutines used throughout the program. */
30 
31 void
32 malloc_failure (long size)
33 {
34  fprintf (stderr,
35  PREFIX "ran out of memory while trying to allocate %lu bytes\n",
36  (unsigned long) size);
37  exit (1);
38 }
39 
40 /* Copy a string into a memory buffer.
41  If malloc fails, this will print a message to stderr and exit. */
42 
43 char *
44 xstrdup (const char *s)
45 {
46  char *ret = strdup (s);
47  if (ret == NULL)
48  malloc_failure (strlen (s) + 1);
49  return ret;
50 }
51 
52 /* Print the system error message for errno, and also mention STRING
53  as the file name for which the error was encountered.
54  Then return to command level. */
55 
56 void
57 perror_with_name (const char *string)
58 {
59  const char *err;
60  char *combined;
61 
62  err = strerror (errno);
63  if (err == NULL)
64  err = "unknown error";
65 
66  combined = (char *) alloca (strlen (err) + strlen (string) + 3);
67  strcpy (combined, string);
68  strcat (combined, ": ");
69  strcat (combined, err);
70 
71  error ("%s.", combined);
72 }
73 
74 /* Print an error message and return to top level. */
75 
76 void
77 verror (const char *string, va_list args)
78 {
79 #ifdef IN_PROCESS_AGENT
80  fflush (stdout);
81  vfprintf (stderr, string, args);
82  fprintf (stderr, "\n");
83  exit (1);
84 #else
85  throw_verror (GENERIC_ERROR, string, args);
86 #endif
87 }
88 
89 void
90 vwarning (const char *string, va_list args)
91 {
92  fprintf (stderr, PREFIX);
93  vfprintf (stderr, string, args);
94  fprintf (stderr, "\n");
95 }
96 
97 /* Report a problem internal to GDBserver, and exit. */
98 
99 void
100 internal_verror (const char *file, int line, const char *fmt, va_list args)
101 {
102  fprintf (stderr, "\
103 %s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line);
104  vfprintf (stderr, fmt, args);
105  fprintf (stderr, "\n");
106  exit (1);
107 }
108 
109 /* Report a problem internal to GDBserver. */
110 
111 void
112 internal_vwarning (const char *file, int line, const char *fmt, va_list args)
113 {
114  fprintf (stderr, "\
115 %s:%d: A problem internal to " TOOLNAME " has been detected.\n", file, line);
116  vfprintf (stderr, fmt, args);
117  fprintf (stderr, "\n");
118 }
119 
120 /* Convert a CORE_ADDR into a HEX string, like %lx.
121  The result is stored in a circular static buffer, NUMCELLS deep. */
122 
123 char *
125 {
126  return phex_nz (addr, sizeof (CORE_ADDR));
127 }
128 
129 /* Convert a file descriptor into a printable string. */
130 
131 char *
133 {
134 #if USE_WIN32API
135  return phex_nz (fd, sizeof (gdb_fildes_t));
136 #else
137  return plongest (fd);
138 #endif
139 }
140 
141 /* See common/common-exceptions.h. */
142 
143 void
145 {
146  /* No client-specific actions required. */
147 }
void vwarning(const char *string, va_list args)
Definition: utils.c:90
char * pfildes(gdb_fildes_t fd)
Definition: utils.c:132
bfd_vma CORE_ADDR
Definition: common-types.h:41
void verror(const char *string, va_list args)
Definition: utils.c:77
char * paddress(CORE_ADDR addr)
Definition: utils.c:124
char * xstrdup(const char *s)
Definition: utils.c:44
void internal_verror(const char *file, int line, const char *fmt, va_list args)
Definition: utils.c:100
#define TOOLNAME
Definition: utils.c:26
void prepare_to_throw_exception(void)
Definition: utils.c:144
void internal_vwarning(const char *file, int line, const char *fmt, va_list args)
Definition: utils.c:112
#define errno
Definition: wincecompat.h:24
void throw_verror(enum errors error, const char *fmt, va_list ap)
void * alloca(size_t)
void perror_with_name(const char *string)
Definition: utils.c:57
void malloc_failure(long size)
Definition: utils.c:32
int gdb_fildes_t
Definition: server.h:108
void error(const char *fmt,...)
Definition: errors.c:38
char * strerror(int)
#define PREFIX
Definition: utils.c:25