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146 lines
3.0 KiB
C++
146 lines
3.0 KiB
C++
#include "Timing.h"
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#ifdef CORTEXM
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#define SYSTICK_INITIAL_VALUE 0xFFFFFF
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static uint32_t startCycles=0;
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#if defined ARMCM0
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#include "ARMCM0.h"
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#elif defined ARMCM0P
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#include "ARMCM0plus.h"
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#elif defined ARMCM0P_MPU
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#include "ARMCM0plus_MPU.h"
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#elif defined ARMCM3
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#include "ARMCM3.h"
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#elif defined ARMCM4
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#include "ARMCM4.h"
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#elif defined ARMCM4_FP
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#include "ARMCM4_FP.h"
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#elif defined ARMCM7
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#include "ARMCM7.h"
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#elif defined ARMCM7_SP
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#include "ARMCM7_SP.h"
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#elif defined ARMCM7_DP
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#include "ARMCM7_DP.h"
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#elif defined (ARMCM33_DSP_FP)
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#include "ARMCM33_DSP_FP.h"
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#elif defined (ARMCM33_DSP_FP_TZ)
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#include "ARMCM33_DSP_FP_TZ.h"
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#elif defined ARMSC000
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#include "ARMSC000.h"
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#elif defined ARMSC300
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#include "ARMSC300.h"
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#elif defined ARMv8MBL
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#include "ARMv8MBL.h"
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#elif defined ARMv8MML
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#include "ARMv8MML.h"
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#elif defined ARMv8MML_DSP
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#include "ARMv8MML_DSP.h"
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#elif defined ARMv8MML_SP
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#include "ARMv8MML_SP.h"
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#elif defined ARMv8MML_DSP_SP
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#include "ARMv8MML_DSP_SP.h"
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#elif defined ARMv8MML_DP
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#include "ARMv8MML_DP.h"
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#elif defined ARMv8MML_DSP_DP
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#include "ARMv8MML_DSP_DP.h"
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#elif defined ARMv7A
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/* TODO */
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#else
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#warning "no appropriate header file found!"
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#endif
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#endif
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#ifdef CORTEXA
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#include "cmsis_cp15.h"
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unsigned int startCycles;
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#define DO_RESET 1
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#define ENABLE_DIVIDER 0
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#endif
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void initCycleMeasurement()
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{
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#ifdef CORTEXM
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SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk;
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SysTick->LOAD = SYSTICK_INITIAL_VALUE;
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#endif
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#ifdef CORTEXA
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// in general enable all counters (including cycle counter)
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int32_t value = 1;
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// peform reset:
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if (DO_RESET)
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{
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value |= 2; // reset all counters to zero.
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value |= 4; // reset cycle counter to zero.
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}
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if (ENABLE_DIVIDER)
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value |= 8; // enable "by 64" divider for CCNT.
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value |= 16;
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// program the performance-counter control-register:
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__set_CP(15, 0, value, 9, 12, 0);
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// enable all counters:
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__set_CP(15, 0, 0x8000000f, 9, 12, 1);
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// clear overflows:
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__set_CP(15, 0, 0x8000000f, 9, 12, 3);
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#endif
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}
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void cycleMeasurementStart()
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{
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#ifdef CORTEXM
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SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk;
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SysTick->LOAD = SYSTICK_INITIAL_VALUE;
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SysTick->CTRL = SysTick_CTRL_ENABLE_Msk | SysTick_CTRL_CLKSOURCE_Msk;
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while(SysTick->VAL == 0);
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startCycles = SysTick->VAL;
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#endif
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#ifdef CORTEXA
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unsigned int value;
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// Read CCNT Register
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__get_CP(15, 0, value, 9, 13, 0);
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startCycles = value;
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#endif
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}
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void cycleMeasurementStop()
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{
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#ifdef CORTEXM
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SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk;
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SysTick->LOAD = SYSTICK_INITIAL_VALUE;
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#endif
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}
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Testing::cycles_t getCycles()
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{
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#ifdef CORTEXM
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uint32_t v = SysTick->VAL;
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return(startCycles - v);
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#endif
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#ifdef CORTEXA
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unsigned int value;
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// Read CCNT Register
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asm volatile ("MRC p15, 0, %0, c9, c13, 0\t\n":"=r" (value));
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return(value - startCycles);
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#endif
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return(0);
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} |