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authorDaniel Jacobowitz <drow@false.org>2006-02-10 21:53:51 +0000
committerDaniel Jacobowitz <drow@false.org>2006-02-10 21:53:51 +0000
commit121ce6e53dd5751c6938ab86cbec2742702d06eb (patch)
tree2eb00528fea4aa66e404ad4e27f772407e73356e /gdb/mingw-hdep.c
parent1f82754b119f92e76335667e98be68ed79586a8e (diff)
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* Makefile.in (mingw-hdep.o, posix-hdep.o): New dependencies.
(ALLDEPFILES): Add mingw-hdep.c and posix-hdep.c. * configure.ac: Add gdb_host_obs to CONFIG_OBS. Set gdb_host_obs to posix-hdep.o by default. * configure: Regenerated. * configure.host: Document gdb_host_obs. Add an entry for i[34567]86-*-mingw32*. * mingw-hdep.c, posix-hdep.c: New files. * utils.c (safe_strerror): Remove, moved to posix-hdep.o.
Diffstat (limited to 'gdb/mingw-hdep.c')
-rw-r--r--gdb/mingw-hdep.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/gdb/mingw-hdep.c b/gdb/mingw-hdep.c
new file mode 100644
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+/* Host support routines for MinGW, for GDB, the GNU debugger.
+
+ Copyright (C) 2006
+ 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., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "defs.h"
+
+#include "gdb_string.h"
+
+#include <windows.h>
+
+/* The strerror() function can return NULL for errno values that are
+ out of range. Provide a "safe" version that always returns a
+ printable string.
+
+ The Windows runtime implementation of strerror never returns NULL,
+ but does return a useless string for anything above sys_nerr;
+ unfortunately this includes all socket-related error codes.
+ This replacement tries to find a system-provided error message. */
+
+char *
+safe_strerror (int errnum)
+{
+ static char *buffer;
+ int len;
+
+ if (errnum >= 0 && errnum < sys_nerr)
+ return strerror (errnum);
+
+ if (buffer)
+ {
+ LocalFree (buffer);
+ buffer = NULL;
+ }
+
+ if (FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER
+ | FORMAT_MESSAGE_FROM_SYSTEM,
+ NULL, errnum,
+ MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
+ (LPTSTR) &buffer, 0, NULL) == 0)
+ {
+ static char buf[32];
+ xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
+ return buf;
+ }
+
+ /* Windows error messages end with a period and a CR-LF; strip that
+ out. */
+ len = strlen (buffer);
+ if (len > 3 && strcmp (buffer + len - 3, ".\r\n") == 0)
+ buffer[len - 3] = '\0';
+
+ return buffer;
+}