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author | ed <ed@FreeBSD.org> | 2010-10-21 19:02:02 +0000 |
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committer | ed <ed@FreeBSD.org> | 2010-10-21 19:02:02 +0000 |
commit | 653bb6745595746d04ad4acacaaab66caaaeb69b (patch) | |
tree | 4cfe2eee875a959effca0881df14c079103447fa /lib/addvdi3.c | |
download | FreeBSD-src-653bb6745595746d04ad4acacaaab66caaaeb69b.zip FreeBSD-src-653bb6745595746d04ad4acacaaab66caaaeb69b.tar.gz |
Import compiler-rt r117047.
Diffstat (limited to 'lib/addvdi3.c')
-rw-r--r-- | lib/addvdi3.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/addvdi3.c b/lib/addvdi3.c new file mode 100644 index 0000000..53ab102 --- /dev/null +++ b/lib/addvdi3.c @@ -0,0 +1,37 @@ +/* ===-- addvdi3.c - Implement __addvdi3 -----------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is distributed under the University of Illinois Open Source + * License. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __addvdi3 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" +#include <stdlib.h> + +/* Returns: a + b */ + +/* Effects: aborts if a + b overflows */ + +di_int +__addvdi3(di_int a, di_int b) +{ + di_int s = a + b; + if (b >= 0) + { + if (s < a) + compilerrt_abort(); + } + else + { + if (s >= a) + compilerrt_abort(); + } + return s; +} |