2010年08鐃緒申10鐃緒申
Cortex-A9鐃塾ワ申鐃緒申鐃緒申鐃暑カ鐃緒申鐃藷タわ申鐃緒申鐃術わ申鐃緒申鐃緒申単鐃淑実行誌申鐃瞬の件申測鐃緒申法
鐃緒申鐃緒申ARM11鐃塾パフワ申鐃緒申鐃殉ンスワ申縫鐃緒申鐃緒申鐃緒申僂鐃緒申鐃緒申鐃獣縁申兵孫垰鐃緒申屬侶鐃渋�鐃緒申法鐃緒申匆陲靴泙鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申同鐃緒申鐃緒申鐃夙わ申Cortex-A9鐃叔わ申辰討澆泙鐃緒申鐃緒申鐃�
鐃緒申測鐃術の関随申鐃緒申鐃准に使わ申鐃緒申茲�鐃祝ワ申鐃緒申鐃緒申鐃緒申鐃緒申鐃宿わ申鐃縦のヘッワ申鐃春ワ申鐃緒申鐃緒申砲泙箸鐃銃わ申鐃殉わ申鐃緒申
鐃緒申鐃緒申愎鐃緒申鐃淑ｏ申鐃緒申鐃緒申鐃祝￥申納鐃緒申鐃緒申鐃緒申董鐃緒申匹鐃緒申蕕�速鐃緒申鐃緒申鐃緒申鐃緒申咾鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃叔わ申鐃緒申
鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
鐃緒申鐃緒申鐃藷タわ申鐃宿み出わ申鐃塾誌申鐃塾ワ申鐃緒申鐃出￥申鐃舜ッドを少なわ申鐃緒申鐃暑た鐃潤イ鐃緒申薀わ申鐃舜随申鐃祝わ申鐃銃わ申鐃殉わ申鐃緒申
gcc鐃塾鰹申張鐃緒申法鐃緒申鐃緒申僂鐃緒申討鐃緒申泙鐃緒申鐃�
#ifndef __KMC_PMON_CA9_H
#define __KMC_PMON_CA9_H
/* Performance Monitor Control Register of Cortex A9*/
#define PMCR_D 3
#define PMCR_C 2
#define PMCR_E 0
#define PMCNTENSET_C 31
volatile __inline__ static unsigned long __attribute__((always_inline))
pmon_start_cycle_counter()
{
unsigned long x;
x = 1 << PMCNTENSET_C;
asm volatile("mcr p15, 0, %0, c9, c12, 1" :: "r" (x));
asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (x));
x |= ((1 << PMCR_D) | (1 << PMCR_C) | (1 << PMCR_E));
asm volatile("mcr p15, 0, %0, c9, c12, 0" :: "r" (x));
asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (x));
return x;
}
volatile __inline__ static unsigned long __attribute__((always_inline))
pmon_read_cycle_counter()
{
unsigned long x;
asm volatile ("mrc p15, 0, %0, c9, c13, 0": "=r" (x));
return x;
}
#endif /* __KMC_PMON_CA9_H */
鐃緒申鐃緒申鐃緒申法
pmon_ca9.h 鐃薯インクルー鐃宿わ申鐃緒申(#include "pmon_ca9.h")
鐃叔緒申鐃�pmon_start_cycle_counter()鐃緒申討鐃叔ワ申鐃緒申鐃緒申箸鬟好鐃緒申鐃緒申箸鐃緒申鐃緒申泙鐃緒申鐃�
鐃緒申鐃塾醐申鐃叔わ申佞里箸鐃緒申鐃緒申鐃�pmon_read_cycle_counter()鐃叔ワ申鐃緒申鐃緒申鐃暑カ鐃緒申鐃藷タわ申鐃宿み出わ申鐃緒申鐃緒申鐃塾削申分鐃叔誌申鐃瞬わ申廚鐃殉わ申鐃緒申pmon_read_cycle_counter()鐃緒申複鐃緒申鐃緒申討喀个鐃緒申謄鐃獣プワ申鐃緒申鐃緒申鐃渋�鐃所す鐃暑こ鐃夙わ申任鐃緒申泙鐃緒申鐃�
鐃初イ鐃瞬ワ申鐃淑どわ申鐃宿加わ申鐃緒申必鐃竣わ申鐃淑わ申鐃塾で￥申Makefile鐃緒申鐃緒申鐃術刻申鐃緒申鐃緒申鐃竣でわ申鐃緒申鐃緒申測鐃緒申鐃緒申鐃緒申鐃緒申分鐃塾ワ申鐃緒申鐃緒申鐃春ワ申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申儿鐃緒申濃箸鐃緒申泙鐃緒申鐃�
ARM鐃緒申Thumb2鐃塾どわ申鐃緒申離癲種申匹任鐃緒申鐃術でわ申鐃殉わ申鐃緒申
鐃緒申鐃緒申鐃緒申
#include <stdio.h>
#include "pmon_ca9.h"
int func(int x)
{
int sum = 0;
int i;
for (i = 1; i <= x; i++) {
sum += i;
}
return sum;
}
int
main()
{
unsigned long start, end;
int x;
start = pmon_start_cycle_counter();
x = func(1000);
end = pmon_read_cycle_counter();
printf("time = %ld, x = %d\n", end - start, x);
return x;
}
- 鐃術フワ申鐃緒申鐃殉ンスワ申縫鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申襯�鐃緒申鐃藷タの詳細わ申Cortex-A9鐃塾テワ申鐃祝ワ申鐃緒申鐃春ワ申鐃緒申鵐好泪縫絅�鐃緒申鮖仮箸鐃緒申討鐃緒申鐃緒申鐃緒申鐃緒申鐃�
- 動鐃緒申鐃叔э申呂鐃緒申討鐃緒申泙鐃緒申鵑�￥申鐃緒申鐃緒申鐃初くCortex-A8鐃盾こ鐃緒申箸曚鐃銃縁申鐃緒申鐃緒申鐃緒申鐃緒申任任鐃緒申鐃夙思わ申鐃殉わ申鐃緒申Cortex-A8鐃塾テワ申鐃祝ワ申鐃緒申鐃春ワ申鐃緒申鵐好泪縫絅�鐃緒申鮖仮箸鐃緒申討鐃緒申鐃緒申鐃緒申鐃緒申鐃�
- 鐃緒申鐃塾ワ申鐃緒申鐃緒申鐃緒申鐃獣醐申鐃盾ー鐃宿で誌申鐃術わ申鐃暑こ鐃夙わ申鐃緒申鐃所し鐃銃わ申鐃殉わ申鐃緒申鐃醇ー鐃緒申鐃緒申鐃盾ー鐃宿わ申鐃緒申僖侫鐃緒申鐃緒申泪鵐好鐃祝ワ申鐃塾レジ鐃緒申鐃緒申鐃祝ワ申鐃緒申鐃緒申鐃緒申鐃緒申鐃暑た鐃緒申砲呂鐃緒申蕕�鐃緒申鐃緒申User Enable Register(PMUSERENR)鐃祝てワ申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申弔鐃緒申討鐃緒申鐃宿�鐃竣わ申鐃緒申鐃緒申泙鐃緒申鐃�
鐃緒申連鐃緒申鐃緒申據鐃緒申鐃�
ARM Linux鐃塾ユー鐃緒申鐃竣ワ申鐃緒申鐃緒申爐�鐃緒申Cortex-A9鐃塾ワ申鐃緒申鐃緒申鐃暑カ鐃緒申鐃藷タわ申鐃緒申鐃術わ申鐃緒申
ARM11鐃塾パフワ申鐃緒申鐃殉ンスワ申縫鐃緒申鐃緒申鐃緒申僂鐃緒申鐃緒申鐃獣縁申兵孫垰鐃緒申屬侶鐃渋�鐃緒申法
PowerPC鐃塾ワ申鐃緒申鐃緒申戞鐃緒申鐃緒申譽醐申鐃緒申鐃緒申鐃緒申鐃緒申僂鐃緒申鐃緒申鐃獣縁申兵孫垰鐃緒申屬侶鐃渋�鐃緒申法
