9c287bca23
The `-target` impacts the CC for the builtins. HF targets (with either floating point ABI) always use AAPCS VFP for the builtins unless they are AEABI builtins, in which case they use AAPCS. Non-HF targets (with either floating point ABI) always use AAPCS for the builtins and AAPCS for the AEABI builtins. This introduces the thunks necessary to switch CC for the floating point operations. This is not currently enabled, and should be dependent on the target being used to build compiler-rt. However, as a stop-gap, a define can be added for ASFLAGS to get the thunks. llvm-svn: 291677
31 lines
856 B
ArmAsm
31 lines
856 B
ArmAsm
//===-- negsf2vfp.S - Implement negsf2vfp ---------------------------------===//
|
|
//
|
|
// 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 float __negsf2vfp(float a);
|
|
//
|
|
// Returns the negation of a single precision floating point numbers using the
|
|
// Darwin calling convention where single arguments are passsed like 32-bit ints
|
|
//
|
|
.syntax unified
|
|
.p2align 2
|
|
DEFINE_COMPILERRT_FUNCTION(__negsf2vfp)
|
|
#if defined(COMPILER_RT_ARMHF_TARGET)
|
|
vneg.f32 s0, s0
|
|
#else
|
|
eor r0, r0, #-2147483648 // flip sign bit on float in r0
|
|
#endif
|
|
bx lr
|
|
END_COMPILERRT_FUNCTION(__negsf2vfp)
|
|
|
|
NO_EXEC_STACK_DIRECTIVE
|
|
|