forked from OSchip/llvm-project
34 lines
1009 B
ArmAsm
34 lines
1009 B
ArmAsm
//===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#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)
|
|
#if defined(COMPILER_RT_ARMHF_TARGET)
|
|
vcvt.s32.f64 s0, d0
|
|
vmov r0, s0
|
|
#else
|
|
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
|
|
#endif
|
|
bx lr
|
|
END_COMPILERRT_FUNCTION(__fixdfsivfp)
|
|
|
|
NO_EXEC_STACK_DIRECTIVE
|
|
|