diff options
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/arm/floatunssidfvfp.S')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/arm/floatunssidfvfp.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/arm/floatunssidfvfp.S b/contrib/compiler-rt/lib/builtins/arm/floatunssidfvfp.S new file mode 100644 index 000000000000..d7a7024a25b8 --- /dev/null +++ b/contrib/compiler-rt/lib/builtins/arm/floatunssidfvfp.S @@ -0,0 +1,34 @@ +//===-- floatunssidfvfp.S - Implement floatunssidfvfp ---------------------===// +// +// 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 double __floatunssidfvfp(unsigned int a); +// +// Converts a 32-bit int to a double precision float. +// Uses Darwin calling convention where a double precision result is +// return in GPR register pair. +// + .syntax unified + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__floatunssidfvfp) +#if defined(COMPILER_RT_ARMHF_TARGET) + vmov s0, r0 + vcvt.f64.u32 d0, s0 +#else + vmov s15, r0 // move int to float register s15 + vcvt.f64.u32 d7, s15 // convert 32-bit int in s15 to double in d7 + vmov r0, r1, d7 // move d7 to result register pair r0/r1 +#endif + bx lr +END_COMPILERRT_FUNCTION(__floatunssidfvfp) + +NO_EXEC_STACK_DIRECTIVE + |