libbacktrace: add support of PE/COFF

libbacktrace/
2015-05-29  Tristan Gingold  <gingold@adacore.com>

	* pecoff.c: New file.
	* Makefile.am (FORMAT_FILES): Add pecoff.c and dependencies.
	* Makefile.in: Regenerate.
	* filetype.awk: Detect pecoff.
	* configure.ac: Define BACKTRACE_SUPPORTS_DATA on elf platforms.
	Add pecoff.
	* btest.c (test5): Test enabled only if BACKTRACE_SUPPORTS_DATA is
	true.
	* backtrace-supported.h.in (BACKTRACE_SUPPORTS_DATA): Define.
	* configure: Regenerate.
	* pecoff.c: New file.

From-SVN: r223859

libbacktrace/ChangeLog

+2015-05-29  Tristan Gingold  <gingold@adacore.com>
+
+	* pecoff.c: New file.
+	* Makefile.am (FORMAT_FILES): Add pecoff.c and dependencies.
+	* Makefile.in: Regenerate.
+	* filetype.awk: Detect pecoff.
+	* configure.ac: Define BACKTRACE_SUPPORTS_DATA on elf platforms.
+	Add pecoff.
+	* btest.c (test5): Test enabled only if BACKTRACE_SUPPORTS_DATA is
+	true.
+	* backtrace-supported.h.in (BACKTRACE_SUPPORTS_DATA): Define.
+	* configure: Regenerate.
+	* pecoff.c: New file.
+
 2015-05-13  Michael Haubenwallner  <michael.haubenwallner@ssi-schaefer.com>
 
 	* Makefile.in: Regenerated with automake-1.11.6.

libbacktrace/Makefile.am

@@ -56,6 +56,7 @@ BACKTRACE_FILES = \
 
 FORMAT_FILES = \
 	elf.c \
+	pecoff.c \
 	unknown.c
 
 VIEW_FILES = \
@@ -124,6 +125,7 @@ fileline.lo: config.h backtrace.h internal.h
 mmap.lo: config.h backtrace.h internal.h
 mmapio.lo: config.h backtrace.h internal.h
 nounwind.lo: config.h internal.h
+pecoff.lo: config.h backtrace.h internal.h
 posix.lo: config.h backtrace.h internal.h
 print.lo: config.h backtrace.h internal.h
 read.lo: config.h backtrace.h internal.h

libbacktrace/Makefile.in

@@ -299,6 +299,7 @@ BACKTRACE_FILES = \
 
 FORMAT_FILES = \
 	elf.c \
+	pecoff.c \
 	unknown.c
 
 VIEW_FILES = \
@@ -753,6 +754,7 @@ fileline.lo: config.h backtrace.h internal.h
 mmap.lo: config.h backtrace.h internal.h
 mmapio.lo: config.h backtrace.h internal.h
 nounwind.lo: config.h internal.h
+pecoff.lo: config.h backtrace.h internal.h
 posix.lo: config.h backtrace.h internal.h
 print.lo: config.h backtrace.h internal.h
 read.lo: config.h backtrace.h internal.h

libbacktrace/backtrace-supported.h.in

@@ -59,3 +59,8 @@ POSSIBILITY OF SUCH DAMAGE.  */
    as 0.  */
 
 #define BACKTRACE_SUPPORTS_THREADS @BACKTRACE_SUPPORTS_THREADS@
+
+/* BACKTRACE_SUPPORTS_DATA will be #defined'd as 1 if the backtrace_syminfo
+   will work for variables.  It will always work for functions.  */
+
+#define BACKTRACE_SUPPORTS_DATA @BACKTRACE_SUPPORTS_DATA@

libbacktrace/btest.c

@@ -616,6 +616,8 @@ f33 (int f1line, int f2line)
   return failures;
 }
 
+#if BACKTRACE_SUPPORTS_DATA
+
 int global = 1;
 
 static int
@@ -684,6 +686,8 @@ test5 (void)
   return failures;
 }
 
+#endif /* BACKTRACE_SUPPORTS_DATA  */
+
 static void
 error_callback_create (void *data ATTRIBUTE_UNUSED, const char *msg,
 		       int errnum)
@@ -708,8 +712,10 @@ main (int argc ATTRIBUTE_UNUSED, char **argv)
   test2 ();
   test3 ();
   test4 ();
+#if BACKTRACE_SUPPORTS_DATA
   test5 ();
 #endif
+#endif
 
   exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
 }

libbacktrace/configure

@@ -607,6 +607,7 @@ NATIVE_TRUE
 BACKTRACE_USES_MALLOC
 ALLOC_FILE
 VIEW_FILE
+BACKTRACE_SUPPORTS_DATA
 BACKTRACE_SUPPORTED
 FORMAT_FILE
 BACKTRACE_SUPPORTS_THREADS
@@ -11129,7 +11130,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11132 "configure"
+#line 11133 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11235,7 +11236,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11238 "configure"
+#line 11239 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11826,8 +11827,12 @@ $as_echo "$libbacktrace_cv_sys_filetype" >&6; }
 
 # Match the file type to decide what files to compile.
 FORMAT_FILE=
+backtrace_supports_data=yes
 case "$libbacktrace_cv_sys_filetype" in
 elf*) FORMAT_FILE="elf.lo" ;;
+pecoff) FORMAT_FILE="pecoff.lo"
+        backtrace_supports_data=no
+	;;
 *) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not determine output file type" >&5
 $as_echo "$as_me: WARNING: could not determine output file type" >&2;}
    FORMAT_FILE="unknown.lo"
@@ -11841,6 +11846,7 @@ elfsize=
 case "$libbacktrace_cv_sys_filetype" in
 elf32) elfsize=32 ;;
 elf64) elfsize=64 ;;
+*)     elfsize=unused
 esac
 
 cat >>confdefs.h <<_ACEOF
@@ -11854,6 +11860,12 @@ if test "$backtrace_supported" = "yes"; then
 fi
 
 
+BACKTRACE_SUPPORTS_DATA=0
+if test "$backtrace_supports_data" = "yes"; then
+  BACKTRACE_SUPPORTS_DATA=1
+fi
+
+
 
 
 inttype_headers=`echo inttypes.h sys/inttypes.h  | sed -e 's/,/ /g'`

libbacktrace/configure.ac

@@ -229,8 +229,12 @@ libbacktrace_cv_sys_filetype=$filetype])
 
 # Match the file type to decide what files to compile.
 FORMAT_FILE=
+backtrace_supports_data=yes
 case "$libbacktrace_cv_sys_filetype" in
 elf*) FORMAT_FILE="elf.lo" ;;
+pecoff) FORMAT_FILE="pecoff.lo"
+        backtrace_supports_data=no
+	;;
 *) AC_MSG_WARN([could not determine output file type])
    FORMAT_FILE="unknown.lo"
    backtrace_supported=no
@@ -243,6 +247,7 @@ elfsize=
 case "$libbacktrace_cv_sys_filetype" in
 elf32) elfsize=32 ;;
 elf64) elfsize=64 ;;
+*)     elfsize=unused
 esac
 AC_DEFINE_UNQUOTED([BACKTRACE_ELF_SIZE], [$elfsize], [ELF size: 32 or 64])
 
@@ -252,6 +257,12 @@ if test "$backtrace_supported" = "yes"; then
 fi
 AC_SUBST(BACKTRACE_SUPPORTED)
 
+BACKTRACE_SUPPORTS_DATA=0
+if test "$backtrace_supports_data" = "yes"; then
+  BACKTRACE_SUPPORTS_DATA=1
+fi
+AC_SUBST(BACKTRACE_SUPPORTS_DATA)
+
 GCC_HEADER_STDINT(gstdint.h)
 
 AC_CHECK_HEADERS(sys/mman.h)

libbacktrace/filetype.awk

 # An awk script to determine the type of a file.
 /\177ELF\001/ { if (NR == 1) { print "elf32"; exit } }
 /\177ELF\002/ { if (NR == 1) { print "elf64"; exit } }
+/\114\001/    { if (NR == 1) { print "pecoff"; exit } }
+/\144\206/    { if (NR == 1) { print "pecoff"; exit } }