35 lines
1.0 KiB
ArmAsm
35 lines
1.0 KiB
ArmAsm
//===-- fixunssfsivfp.S - Implement fixunssfsivfp -------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "../assembly.h"
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//
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// extern unsigned int __fixunssfsivfp(float a);
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//
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// Converts single precision float to a 32-bit unsigned int rounding towards
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// zero. All negative values become zero.
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// Uses Darwin calling convention where a single precision parameter is
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// passed in a GPR..
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//
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.syntax unified
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.p2align 2
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DEFINE_COMPILERRT_FUNCTION(__fixunssfsivfp)
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#if defined(COMPILER_RT_ARMHF_TARGET)
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vcvt.u32.f32 s0, s0
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vmov r0, s0
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#else
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vmov s15, r0 // load float register from R0
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vcvt.u32.f32 s15, s15 // convert single to 32-bit unsigned into s15
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vmov r0, s15 // move s15 to result register
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#endif
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bx lr
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END_COMPILERRT_FUNCTION(__fixunssfsivfp)
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NO_EXEC_STACK_DIRECTIVE
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