Move abi bits to separate header. Force AAPCS for EABI in accordance with ARM RTABI.

llvm-svn: 129769
diff --git a/compiler-rt/lib/modsi3.c b/compiler-rt/lib/modsi3.c
index 70d38a6..05ce806 100644
--- a/compiler-rt/lib/modsi3.c
+++ b/compiler-rt/lib/modsi3.c
@@ -11,14 +11,15 @@
  *
  * ===----------------------------------------------------------------------===
  */
+#include "abi.h"
 
 #include "int_lib.h"
 
-su_int __divsi3(si_int a, si_int b);
+su_int COMPILER_RT_ABI __divsi3(si_int a, si_int b);
 
 /* Returns: a % b */
 
-si_int
+COMPILER_RT_ABI si_int
 __modsi3(si_int a, si_int b)
 {
     return a - __divsi3(a, b) * b;