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-/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
- * 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.
- */
-
-/**
- * @file parc_TimingIntel.h
- * @ingroup developer
- * @brief Macros for timing code
- *
- * This code uses the Intel recommended benchmarking techniques described
- * in the whitepaper "How to Benchmakr Code Execution Times on Intel (R) IA-32 and
- * IA-64 Instruction Set Architectures" available at:
- *
- * http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/ia-32-ia-64-benchmark-code-execution-paper.pdf
- *
- *
- */
-#ifndef libparc_parc_TimingIntel_h
-#define libparc_parc_TimingIntel_h
-
-#ifdef PARCTIMING_INTEL
-#include <stdint.h>
-#include <stdbool.h>
-
-/**
- * Reads the TSC via the best available CPU instruction
- *
- * Will execute a RDTSC or RDTSCP instruction followed by an instruction pipeline block
- * CPUID instruction.
- *
- * @param [out] hi The high-order 32-bits
- * @param [out] lo The low-order 32-bits
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-void parcTimingIntel_rdtsc(unsigned *hi, unsigned *lo);
-
-/**
- * Checks initialization for RDTSCP instruction availability
- *
- * Checks if RDTSCP is availalbe on the system and sets a global.
- *
- * Example:
- * @code
- * {
- * parcTiminIntel_RuntimeInit();
- * }
- * @endcode
- */
-void parcTiminIntel_RuntimeInit(void);
-
-#define _private_parcTiming_Init(prefix) \
- parcTiminIntel_RuntimeInit(); \
- static unsigned prefix ## _cycles_low0, prefix ## _cycles_high0; \
- static unsigned prefix ## _cycles_low1, prefix ## _cycles_high1; \
- \
- __asm volatile ("CPUID\n\t" "RDTSC\n\t" \
- "mov %%edx, %0\n\t" \
- "mov %%eax, %1\n\t" : "=r" (prefix ## _cycles_high0), "=r" (prefix ## _cycles_low0):: \
- "%rax", "%rbx", "%rcx", "%rdx"); \
- parcTimingIntel_rdtsc(&(prefix ## _cycles_high1), &(prefix ## _cycles_low1)); \
- __asm volatile ("CPUID\n\t" \
- "RDTSC\n\t" \
- "mov %%edx, %0\n\t" \
- "mov %%eax, %1\n\t" : "=r" (prefix ## _cycles_high0), "=r" (prefix ## _cycles_low0):: \
- "%rax", "%rbx", "%rcx", "%rdx"); \
- parcTimingIntel_rdtsc(&(prefix ## _cycles_high1), &(prefix ## _cycles_low1));
-
-#define _private_parcTiming_Start(prefix) \
- parcTimingIntel_rdtsc(&(prefix ## _cycles_high0), &(prefix ## _cycles_low0));
-
-#define _private_parcTiming_Stop(prefix) \
- parcTimingIntel_rdtsc(&(prefix ## _cycles_high1), &(prefix ## _cycles_low1));
-
-#define _private_parcTiming_CalculateStartTime(prefix) (((uint64_t) prefix ## _cycles_high0 << 32) | prefix ## _cycles_low0)
-#define _private_parcTiming_CalculateStopTime(prefix) (((uint64_t) prefix ## _cycles_high1 << 32) | prefix ## _cycles_low1)
-
-#define _private_parcTiming_Delta(prefix) \
- (_private_parcTiming_CalculateStopTime(prefix) - _private_parcTiming_CalculateStartTime(prefix))
-
-// No teardown work that we need to do
-#define _private_parcTiming_Fini(prefix)
-
-#endif // PARCTIMING_INTEL
-#endif // libparc_parc_TimingIntel_h
-