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Initial open source release of OpenCL 2.2 CTS.

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Kedar Patil
2017-05-16 18:25:37 +05:30
parent 6911ba5116
commit 2821bf1323
1035 changed files with 343518 additions and 0 deletions
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test_common/harness/fpcontrol.h Normal file
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//
// Copyright (c) 2017 The Khronos Group Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef _fpcontrol_h
#define _fpcontrol_h
// In order to get tests for correctly rounded operations (e.g. multiply) to work properly we need to be able to set the reference hardware
// to FTZ mode if the device hardware is running in that mode. We have explored all other options short of writing correctly rounded operations
// in integer code, and have found this is the only way to correctly verify operation.
//
// Non-Apple implementations will need to provide their own implentation for these features. If the reference hardware and device are both
// running in the same state (either FTZ or IEEE compliant modes) then these functions may be empty. If the device is running in non-default
// rounding mode (e.g. round toward zero), then these functions should also set the reference device into that rounding mode.
#if defined( __APPLE__ ) || defined( _MSC_VER ) || defined( __linux__ ) || defined (__MINGW32__)
typedef int FPU_mode_type;
#if defined( __i386__ ) || defined( __x86_64__ ) || defined( _MSC_VER ) || defined( __MINGW32__ )
#include <xmmintrin.h>
#elif defined( __PPC__ )
#include <fpu_control.h>
extern __thread fpu_control_t fpu_control;
#endif
// Set the reference hardware floating point unit to FTZ mode
static inline void ForceFTZ( FPU_mode_type *mode )
{
#if defined( __i386__ ) || defined( __x86_64__ ) || defined( _MSC_VER ) || defined (__MINGW32__)
*mode = _mm_getcsr();
_mm_setcsr( *mode | 0x8040);
#elif defined( __PPC__ )
*mode = fpu_control;
fpu_control |= _FPU_MASK_NI;
#elif defined ( __arm__ )
unsigned fpscr;
__asm__ volatile ("fmrx %0, fpscr" : "=r"(fpscr));
*mode = fpscr;
__asm__ volatile ("fmxr fpscr, %0" :: "r"(fpscr | (1U << 24)));
// Add 64 bit support
#elif defined (__aarch64__)
unsigned fpscr;
__asm__ volatile ("mrs %0, fpcr" : "=r"(fpscr));
*mode = fpscr;
__asm__ volatile ("msr fpcr, %0" :: "r"(fpscr | (1U << 24)));
#else
#error ForceFTZ needs an implentation
#endif
}
// Disable the denorm flush to zero
static inline void DisableFTZ( FPU_mode_type *mode )
{
#if defined( __i386__ ) || defined( __x86_64__ ) || defined( _MSC_VER ) || defined (__MINGW32__)
*mode = _mm_getcsr();
_mm_setcsr( *mode & ~0x8040);
#elif defined( __PPC__ )
*mode = fpu_control;
fpu_control &= ~_FPU_MASK_NI;
#elif defined ( __arm__ )
unsigned fpscr;
__asm__ volatile ("fmrx %0, fpscr" : "=r"(fpscr));
*mode = fpscr;
__asm__ volatile ("fmxr fpscr, %0" :: "r"(fpscr & ~(1U << 24)));
// Add 64 bit support
#elif defined (__aarch64__)
unsigned fpscr;
__asm__ volatile ("mrs %0, fpcr" : "=r"(fpscr));
*mode = fpscr;
__asm__ volatile ("msr fpcr, %0" :: "r"(fpscr & ~(1U << 24)));
#else
#error DisableFTZ needs an implentation
#endif
}
// Restore the reference hardware to floating point state indicated by *mode
static inline void RestoreFPState( FPU_mode_type *mode )
{
#if defined( __i386__ ) || defined( __x86_64__ ) || defined( _MSC_VER ) || defined (__MINGW32__)
_mm_setcsr( *mode );
#elif defined( __PPC__)
fpu_control = *mode;
#elif defined (__arm__)
__asm__ volatile ("fmxr fpscr, %0" :: "r"(*mode));
// Add 64 bit support
#elif defined (__aarch64__)
__asm__ volatile ("msr fpcr, %0" :: "r"(*mode));
#else
#error RestoreFPState needs an implementation
#endif
}
#else
#error ForceFTZ and RestoreFPState need implentations
#endif
#endif