From caab5dcee77d8278fdf578334b6d4e7f8595052e Mon Sep 17 00:00:00 2001
From: kosaki <kosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 12 Jan 2011 14:11:06 +0000
Subject: 	* io.c (rb_f_syscall): Add 64bit Linux support. Some syscall
 takes 	  long type arguments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30525 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 io.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'io.c')

diff --git a/io.c b/io.c
index 6e8fa0b2f1..f8aa6dd3f7 100644
--- a/io.c
+++ b/io.c
@@ -7839,6 +7839,18 @@ rb_f_syscall(int argc, VALUE *argv)
 # else
 #  error ---->> it is asserted that __syscall takes the first argument and returns retval in 64bit signed integer. <<----
 # endif
+#elif defined linux
+# define SYSCALL syscall
+# define NUM2SYSCALLID(x) NUM2LONG(x)
+# define RETVAL2NUM(x) LONG2NUM(x)
+    /*
+     * Linux man page says, syscall(2) function prototype is below.
+     *
+     *     int syscall(int number, ...);
+     *
+     * But, it's incorrect. Actual one takes and returned long. (see unistd.h)
+     */
+    long num, retval = -1;
 #else
 # define SYSCALL syscall
 # define NUM2SYSCALLID(x) NUM2INT(x)
-- 
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