diff options
Diffstat (limited to 'compiler-rt/lib/builtins/arm/negdf2vfp.S')
| -rw-r--r-- | compiler-rt/lib/builtins/arm/negdf2vfp.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/compiler-rt/lib/builtins/arm/negdf2vfp.S b/compiler-rt/lib/builtins/arm/negdf2vfp.S new file mode 100644 index 000000000000..b7cf91877e38 --- /dev/null +++ b/compiler-rt/lib/builtins/arm/negdf2vfp.S @@ -0,0 +1,29 @@ +//===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===// +// +// 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 double __negdf2vfp(double a, double b); +// +// Returns the negation a double precision floating point numbers using the +// Darwin calling convention where double arguments are passsed in GPR pairs. +// + .syntax unified + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__negdf2vfp) +#if defined(COMPILER_RT_ARMHF_TARGET) + vneg.f64 d0, d0 +#else + eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair +#endif + bx lr +END_COMPILERRT_FUNCTION(__negdf2vfp) + +NO_EXEC_STACK_DIRECTIVE + |