2013-12-16 Chung-Lin Tang <cltang@codesourcery.com>

	* opts-common.c (integral_argument): Add support for
	hexadecimal command option integer arguments. Update comments.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206008 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 12 insertions, 1 deletions

diff --git a/gcc/opts-common.c b/gcc/opts-common.c
index 9d186a759cb..161ddf0122c 100644
--- a/gcc/opts-common.c
+++ b/gcc/opts-common.c
@@ -147,7 +147,7 @@ find_opt (const char *input, unsigned int lang_mask)
   return match_wrong_lang;
 }
 
-/* If ARG is a non-negative integer made up solely of digits, return its
+/* If ARG is a non-negative decimal or hexadecimal integer, return its
    value, otherwise return -1.  */
 
 int
@@ -161,6 +161,17 @@ integral_argument (const char *arg)
   if (*p == '\0')
     return atoi (arg);
 
+  /* It wasn't a decimal number - try hexadecimal.  */
+  if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X'))
+    {
+      p = arg + 2;
+      while (*p && ISXDIGIT (*p))
+	p++;
+
+      if (p != arg + 2 && *p == '\0')
+	return strtol (arg, NULL, 16);
+    }
+
   return -1;
 }