Initial import of compiler-rt.
-
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@74292 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/i386/floatundixf.s b/lib/i386/floatundixf.s
new file mode 100644
index 0000000..c24689a
--- /dev/null
+++ b/lib/i386/floatundixf.s
@@ -0,0 +1,34 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// long double __floatundixf(du_int a);16
+
+#ifdef __i386__
+
+.const
+.align 4
+twop52: .quad 0x4330000000000000
+twop84_plus_twop52_neg:
+ .quad 0xc530000000100000
+twop84: .quad 0x4530000000000000
+
+#define REL_ADDR(_a) (_a)-0b(%eax)
+
+.text
+.align 4
+.globl ___floatundixf
+___floatundixf:
+ calll 0f
+0: popl %eax
+ movss 8(%esp), %xmm0 // hi 32 bits of input
+ movss 4(%esp), %xmm1 // lo 32 bits of input
+ orpd REL_ADDR(twop84), %xmm0 // 2^84 + hi (as a double)
+ orpd REL_ADDR(twop52), %xmm1 // 2^52 + lo (as a double)
+ addsd REL_ADDR(twop84_plus_twop52_neg), %xmm0 // hi - 2^52 (no rounding occurs)
+ movsd %xmm1, 4(%esp)
+ fldl 4(%esp)
+ movsd %xmm0, 4(%esp)
+ faddl 4(%esp)
+ ret
+
+#endif // __i386__
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