a06918a349
are only used on armv6 when the vfp unit is detected. They will also be available for the upcoming armv6hf platform, however while not used by default there will need to be defined for any software that calls them directly.
161 lines
3.7 KiB
ArmAsm
161 lines
3.7 KiB
ArmAsm
/*
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* Copyright (C) 2013 Andrew Turner
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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#include "aeabi_vfp.h"
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.fpu vfp
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.syntax unified
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/* int __aeabi_fcmpeq(float, float) */
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AEABI_ENTRY(fcmpeq)
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LOAD_SREGS(s0, s1, r0, r1)
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vcmp.f32 s0, s1
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vmrs APSR_nzcv, fpscr
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movne r0, #0
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moveq r0, #1
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RET
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AEABI_END(fcmpeq)
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/* int __aeabi_fcmplt(float, float) */
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AEABI_ENTRY(fcmplt)
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LOAD_SREGS(s0, s1, r0, r1)
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vcmp.f32 s0, s1
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vmrs APSR_nzcv, fpscr
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movcs r0, #0
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movlt r0, #1
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RET
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AEABI_END(fcmplt)
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/* int __aeabi_fcmple(float, float) */
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AEABI_ENTRY(fcmple)
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LOAD_SREGS(s0, s1, r0, r1)
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vcmp.f32 s0, s1
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vmrs APSR_nzcv, fpscr
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movhi r0, #0
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movls r0, #1
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RET
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AEABI_END(fcmple)
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/* int __aeabi_fcmpge(float, float) */
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AEABI_ENTRY(fcmpge)
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LOAD_SREGS(s0, s1, r0, r1)
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vcmp.f32 s0, s1
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vmrs APSR_nzcv, fpscr
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movlt r0, #0
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movge r0, #1
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RET
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AEABI_END(fcmpge)
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/* int __aeabi_fcmpgt(float, float) */
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AEABI_ENTRY(fcmpgt)
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LOAD_SREGS(s0, s1, r0, r1)
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vcmp.f32 s0, s1
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vmrs APSR_nzcv, fpscr
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movle r0, #0
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movgt r0, #1
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RET
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AEABI_END(fcmpgt)
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/* int __aeabi_fcmpun(float, float) */
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AEABI_ENTRY(fcmpun)
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LOAD_SREGS(s0, s1, r0, r1)
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vcmp.f32 s0, s1
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vmrs APSR_nzcv, fpscr
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movvc r0, #0
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movvs r0, #1
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RET
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AEABI_END(fcmpun)
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/* int __aeabi_f2iz(float) */
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AEABI_ENTRY(f2iz)
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LOAD_SREG(s0, r0)
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#if 0
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/*
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* This should be the correct instruction, but binutils incorrectly
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* encodes it as the version that used FPSCR to determine the rounding.
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* When binutils is fixed we can use this again.
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*/
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vcvt.s32.f32 s0, s0
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#else
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ftosizs s0, s0
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#endif
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vmov r0, s0
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RET
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AEABI_END(f2iz)
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/* double __aeabi_f2d(float) */
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AEABI_ENTRY(f2d)
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LOAD_SREG(s0, r0)
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vcvt.f64.f32 d0, s0
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UNLOAD_DREG(r0, r1, d0)
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RET
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AEABI_END(f2d)
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/* float __aeabi_i2f(int) */
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AEABI_ENTRY(i2f)
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vmov s0, r0
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vcvt.f32.s32 s0, s0
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UNLOAD_SREG(r0, s0)
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RET
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AEABI_END(i2f)
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/* float __aeabi_fadd(float, float) */
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AEABI_ENTRY(fadd)
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LOAD_SREGS(s0, s1, r0, r1)
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vadd.f32 s0, s0, s1
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UNLOAD_SREG(r0, s0)
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RET
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AEABI_END(fadd)
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/* float __aeabi_fmul(float, float) */
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AEABI_ENTRY(fdiv)
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LOAD_SREGS(s0, s1, r0, r1)
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vdiv.f32 s0, s0, s1
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UNLOAD_SREG(r0, s0)
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RET
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AEABI_END(fdiv)
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/* float __aeabi_fmul(float, float) */
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AEABI_ENTRY(fmul)
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LOAD_SREGS(s0, s1, r0, r1)
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vmul.f32 s0, s0, s1
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UNLOAD_SREG(r0, s0)
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RET
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AEABI_END(fmul)
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/* float __aeabi_fsub(float, float) */
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AEABI_ENTRY(fsub)
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LOAD_SREGS(s0, s1, r0, r1)
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vsub.f32 s0, s0, s1
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UNLOAD_SREG(r0, s0)
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RET
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AEABI_END(fsub)
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