gdb/rs6000: Read backchain as unsigned.

[deliverable/binutils-gdb.git] / gdb / ptrace.m4

diff --git a/gdb/ptrace.m4 b/gdb/ptrace.m4
index e5fe7fa966063e1435f054401f4854ec27ec4bdf..ca2b7c63d96756c9213da3b2f4b924890bd0aae3 100644 (file)
--- a/gdb/ptrace.m4
+++ b/gdb/ptrace.m4
@@ -1,4 +1,4 @@
-dnl Copyright (C) 2012-2015 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2016 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GDB.
 dnl
@@ -22,6 +22,12 @@ AC_DEFUN([GDB_AC_PTRACE],
 
 AC_CHECK_HEADERS([sys/ptrace.h ptrace.h])
 
+# Needs to be tested in C++ mode, to detect whether we need to cast
+# the first argument to enum __ptrace_request.
+if test "$enable_build_with_cxx" = "yes"; then
+    AC_LANG_PUSH([C++])
+fi
+
 gdb_ptrace_headers='
 #include <sys/types.h>
 #if HAVE_SYS_PTRACE_H
@@ -52,7 +58,7 @@ AC_DEFINE_UNQUOTED(PTRACE_TYPE_RET, $gdb_cv_func_ptrace_ret,
 AC_CACHE_CHECK([types of arguments for ptrace], gdb_cv_func_ptrace_args, [
   AC_TRY_COMPILE($gdb_ptrace_headers,
     [extern long ptrace (enum __ptrace_request, ...);],
-    [gdb_cv_func_ptrace_args='int,int,long,long'],[
+    [gdb_cv_func_ptrace_args='enum __ptrace_request,int,long,long'],[
 for gdb_arg1 in 'int' 'long'; do
  for gdb_arg2 in 'pid_t' 'int' 'long'; do
   for gdb_arg3 in 'int *' 'caddr_t' 'int' 'long' 'void *'; do
@@ -81,6 +87,8 @@ ac_save_IFS=$IFS; IFS=','
 set dummy `echo "$gdb_cv_func_ptrace_args" | sed 's/\*/\*/g'`
 IFS=$ac_save_IFS
 shift
+AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG1, $[1],
+  [Define to the type of arg 1 for ptrace.])
 AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG3, $[3],
   [Define to the type of arg 3 for ptrace.])
 AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG4, $[4],
@@ -89,4 +97,8 @@ if test -n "$[5]"; then
   AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG5, $[5],
     [Define to the type of arg 5 for ptrace.])
 fi
+
+if test "$enable_build_with_cxx" = "yes"; then
+    AC_LANG_POP([C++])
+fi
 ])