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Diffstat (limited to 'lib/builtins/arm/fixdfsivfp.S')
| -rw-r--r-- | lib/builtins/arm/fixdfsivfp.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/builtins/arm/fixdfsivfp.S b/lib/builtins/arm/fixdfsivfp.S new file mode 100644 index 0000000000000..e3bd8e05e01f5 --- /dev/null +++ b/lib/builtins/arm/fixdfsivfp.S @@ -0,0 +1,26 @@ +//===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "../assembly.h" + +// +// extern int __fixdfsivfp(double a); +// +// Converts double precision float to a 32-bit int rounding towards zero. +// Uses Darwin calling convention where a double precision parameter is +// passed in GPR register pair. +// + .syntax unified + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__fixdfsivfp) + vmov d7, r0, r1 // load double register from R0/R1 + vcvt.s32.f64 s15, d7 // convert double to 32-bit int into s15 + vmov r0, s15 // move s15 to result register + bx lr +END_COMPILERRT_FUNCTION(__fixdfsivfp) |