36 lines
1.0 KiB
ArmAsm
36 lines
1.0 KiB
ArmAsm
//===-- fixunssfsivfp.S - Implement fixunssfsivfp -------------------------===//
|
|
//
|
|
// 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 unsigned int __fixunssfsivfp(float a);
|
|
//
|
|
// Converts single precision float to a 32-bit unsigned int rounding towards
|
|
// zero. All negative values become zero.
|
|
// Uses Darwin calling convention where a single precision parameter is
|
|
// passed in a GPR..
|
|
//
|
|
.syntax unified
|
|
.p2align 2
|
|
DEFINE_COMPILERRT_FUNCTION(__fixunssfsivfp)
|
|
#if defined(COMPILER_RT_ARMHF_TARGET)
|
|
vcvt.u32.f32 s0, s0
|
|
vmov r0, s0
|
|
#else
|
|
vmov s15, r0 // load float register from R0
|
|
vcvt.u32.f32 s15, s15 // convert single to 32-bit unsigned into s15
|
|
vmov r0, s15 // move s15 to result register
|
|
#endif
|
|
bx lr
|
|
END_COMPILERRT_FUNCTION(__fixunssfsivfp)
|
|
|
|
NO_EXEC_STACK_DIRECTIVE
|
|
|