åºèª¿è¬æ¼ã§ã¯ç°¡åã«æ§è½é¢ã(Cortex-A7ã¨æ¯è¼ããå½¢ã§)示ããããCortex-A35ãã ããããå°ãç´°ãã話ããç´¹ä»ãããã¨æãã ã¾ã製åã»ã°ã¡ã³ããããPhoto01ãåã ã®è£½ååããã¨ããå½¢ã«ãªãã å®ãè¨ãã°ãã®å³ã¯å³å¯ã«ã¯Cortex-A9ã¨Cortex-A53ã®éã«ARMv7-A(*)ã¨ãã¦Cortex-A12ãå ¥ã£ãå½¢ã«ãªã"ã¯ãã ã£ã"ãã¨ãããCortex-A12ã¯çºè¡¨ããããããã®ã®ããã¾ããã¼ãºãç¡ãã¨ãããã¨ã§ã2014å¹´10æã«Cortex-A17ã«çµ±åãããå½¢ã«ãªã£ã¦ãã¾ãããã®çµæARMv7-A(*)ã¨æ¸ããã32bitãè¶ ããLPA(Large Physical Addressing)ãå©ç¨ã§ããHigh Efficencyåãã®ARM v7-aãã¼ã¹ã®ã³ã¢ããªããªã£ã¦ãã¾ã£ããå®éã«è£½åååãè¦ãã¨ãCortex-A15ã®åä½å¨æ³¢æ°ãè½ã¨ãã¦ä½¿ãã
æ¥æ¿ã«æ®åæ¡å¤§ããARMããã»ããµã¼ 2010å¹´æ«ï½2011å¹´ã«ããã¦ã®é£è¼82åãã85åã§ãARMããã»ããµã¼ã³ã¢ã¨ãããæ¡ç¨ããSoCã«ã¤ãã¦è§£èª¬ããããããã1å¹´åã»ã©çµéããç¾å¨ã§ã¯ãå¸å ´ã«ARMãã¼ã¹ã®SoCãæè¼ããã¹ãã¼ããã©ã³ãã¿ãã¬ãããããã«å¤ãåºåãããã«ãªã£ãããã®ãããã¤ã¯ãã½ããã¾ã§ãããWindows RTãã¨ããåã§ã»ã¼ãã«æ©è½ã®Windowsããªãªã¼ã¹ããã¨ãã£ãç¶æ³ã«ããã以åã«æ¯ã¹ãã¨ARMããã»ããµã¼ã¯ãã¯ããã«èº«è¿ãªåå¨ã¨ãªã£ã¦ããã 䏿¹ARMã®å´ããè¦ãã¨ãä»ã¯ã©ã®ãããªç¶æ³ãªã®ã ããããARMã¯2005å¹´ã«åãã¦ãCortex-A8ããçºè¡¨ãã¦ãããå®éã«æ¡ç¨ãã製åãç»å ´ããã¾ã§ã4å¹´ã»ã©ãè¦ãã¦ãããæç¢ºã«æ®åããã¨è¨ããç¶æ³ã«ãªã£ãã®ã¯ã2010å¹´ã«å ¥ã£ããããã ãã¤ã¾ããã³ã¢ã®çºè¡¨ãã製åã®æ®åã¾ã§ã徿¥ã¯5å¹´ãè¦ãã¦ããã ã¨ãã
ä»åãå¼ãç¶ããä»ãã¨ãããARMããã»ããµã¼ã®ææ°äºæ ã解説ãããååã¯ã¹ãã¼ããã©ã³ãã¿ãã¬ããã«ä½¿ããããCortex-Aãã³ã¢ã«ã¤ãã¦èª¬æããã®ã§ãä»åã¯ãCortex-Rãã³ã¢ã¨ãCortex-Mãã³ã¢ã«ã¤ãã¦ã®èª¬æããããã¾ãã¯MCUåãã¨ãªãCortex-Mããã ã MPUã¨MCUã®éãã¨ã¯ï¼ å°ã é·ãåç½®ãã«ãªãããã¾ãã¯ãããããMCUã¨ã¯ä½ããï¼ãã¨ãã話ããå§ããããMCU(Micro Controller Unit)ã¨MPU(Micro Processor Unit)ã®æ±ºå®çãªéãã¯ä½ãã¨è«ããå ´åãå°ãªãã¨ããCPUã³ã¢ãã®ãã®ã®ã決å®çã«éããã¨ãã話ã«ã¯ããã¾ããªããªããä¾ãã°ãCPU黿´å²ã§ã¨ãããããAm29000ãã¯ãMPUã¨MCUãåºæ¬çã«åãã³ã¢ããæ´¾çãã¦ããã ã§ã¯ä½ãéãã®ãã¨è¨ãã°ãCPUã®å¨å²ã§ãããMPUã®å ´åãã³ã¢ã«ã¯ãã£ãã·ã¥ã¨ã¡ã¢ãª
ARMã®ã¨ã³ã¸ãã¢ãã使ãå©ç¨ãã¦éçºããã¬ã´ããããããã«ã¼ããã¯ãã¥ã¼ãã3.253ç§ã§è§£ããä¸çæéè¨é²ãéæãããé è³é¨åã«ã¯ã8ã³ã¢ããã»ããµãæè¼ããSamsung Electronicsã®ã¹ãã¼ããã©ã³ãGALAXY S4ãã使ããã¦ããã ã¬ã´ã§ä½ãããæ°åãããããCUBESTORMER 3ãããã«ã¼ããã¯ãã¥ã¼ããããã3.253ç§ã§è§£ããä¸çè¨é²ãéæãããCUBESTORMER 3ã¯ã8ã³ã¢ããã»ããµãæè¼ããSamsung Electronicsã®ã¹ãã¼ããã©ã³ãGALAXY S4ããé è³é¨åã¨ãã¦ä½¿ç¨ãã¦ããã GALAXY S4ã®8ã³ã¢ããã»ããµãExynos Octaãã¯ãARMã®big.LITTLEå¦çãæ¡ç¨ããCortex-A15ã³ã¢ã¨Cortex-A7ã³ã¢ã4åãã¤æè¼ããï¼é¢é£è¨äºï¼Samsungã®ãGALAXY S4ããåè§£ãæ¬ä¸¸ã¯Cortex-
ã»ã¨ãã©ã®ã¢ã³ããã¤ãã¹ãã¼ããã©ã³ãã¿ãã¬ããã«ä½¿ããã¦ããã®ã¯ãARMã社ã®ããã»ããµã§ããã§ãããARM社ã¯ãåå°ä½è£½åãä¸åä½ã£ã¦ãã¾ãããå®éã«ããã»ããµãä½ãã®ã¯ãARMããã©ã¤ã»ã³ã¹ãåããåå°ä½ã¡ã¼ã«ã¼ã§ãã夿°ã®åå°ä½ã¡ã¼ã«ã¼ãARMã®ã©ã¤ã»ã³ã¹ãåãã¦ããã»ããã»ããã¡ã¼ã«ã¼ãªã©ãã©ã¤ã»ã³ã¹ãåããã»ããã«çµã¿è¾¼ãåå°ä½ããã¤ã¹(ã«ã¹ã¿ã LSI)ã«ARMããã»ããµãçµã¿è¾¼ããã¨ãè¡ããã¦ãã¾ãã ãã½ã³ã³ãªã©ã§ä½¿ãããããã»ããµã¯ããã¨ãã°ã¤ã³ãã«ã®å ´åãèªç¤¾ã§è¨è¨ããã¤ã³ãã«èªèº«ã製é ãã¦è²©å£²ãã¦ãã¾ããããã«å¯¾ãã¦ãARMã¯ãè¨è¨ããã ãã§ãèªåã§ããã»ããµãä½ããã¨ã¯ãªããããã»ããµã売ããã¨ãããã¾ãã(å³01)ãARMããã©ã¤ã»ã³ã¹ãåãã伿¥ã¯ããã¨ãã°ãåå°ä½ã¡ã¼ã«ã¼ãªãã°ãå¤è²©ããåå°ä½è£½åãä½ããã¨ãå¤ãã®ã§ãããå¿ ããããå¤è²©ããããã§ã¯ãªããç¹å®ã®
ARM編第1åã®ååã§ãããã¾ããªãã¼ããããã¨è£½åã®ç¹å¾´ã¯èª¬æãããä»åã¯ããå°ãç´°ãããã¢ã¼ããã¯ãã£ã¼ã®ç¹å¾´ãªã©ã説æãã¦ããããã ã¨ãã£ã¦ããARMããã»ããµã¼ã¯ä½ãã種é¡ãå¤ããããã§è©±ãã¢ããªã±ã¼ã·ã§ã³ããã»ããµã¼ã«éãããARM11ã以éã®è©±ããããã 大ããªæ¹è¯ã¨ã¨ãã«ç»å ´ãã ARM11 ARM11ã®ãã¼ã¹ã¨ãªããARM v6ãã¢ã¼ããã¯ãã£ã¼ãçºè¡¨ãããã®ã¯ã2001å¹´10æã«éå¬ãããåå°ä½æ¥çã¤ãã³ããMicro Processor Forum(MPF) 2001ãã§ã®ãã¨ã ã彿ã®çºè¡¨è³æãè¦ãã¨ãARM v5ããã®æ¹åäºé ã¨ãã¦ä»¥ä¸ã®é ç®ãæãããã¦ããã ãã£ãã·ã¥ã¢ã¼ããã¯ãã£ã¼ã®æ¹å SIMDã®æè¼ å½ä»¤ã»ããã®æ¹å SoC/ãã«ãããã»ããµã¼åãã®æ¹è¯ (åæã¡ã«ããºã ã®æè¼ãæ°ã¡ã¢ãªã¼ã¢ãã«ã®ãµãã¼ã) å ·ä½çã«ã¯ãã¤ã¨ã³ãã£ã¢ã³ã®ãµãã¼ãâ»1ããã
ãæè¿ã¹ãã¼ããã©ã³ã¨ãã¿ãã¬ããã§ãARMã®ããã»ããµã¼ãæè¼ãã製åãããããåºã¦ãã¦ãããããã«ã¤ãã¦è§£èª¬ãã¦ããã¾ãããï¼ãã¨ããä¾é ¼ãç·¨éé¨ãããã£ããããã§æ°åã«åãã¦ãARMããã»ããµã¼ã®åºæ¬ã¨ãã¼ããããã«ã¤ãã¦è§£èª¬ãããã¨æãã ãã¤ã³ã³ãã³ãã¼ãèªç¤¾éçºããCPUããå§ã¾ã ARMã®æ´å² ä¸ã«æ²è¼ããã®ããARMã®å¤§éæãªè£½åã¨ã¢ã¼ããã¯ãã£ã¼ã®ãã¼ããããã§ãããå³å¯ã«è¨ãã°ããããã¨æ¼ãã¯ããã®ã ã(ä¾ãã°æ¡å¼µå½ä»¤ã»ããã«VFPãTrustZoneããªã)ãããããã®æµãã¯ããã§ãçè§£ããã ããã¨æããã¾ãã¯ç°¡åã«ARMã®çãç«ã¡ãã説æãããã ARMã¯å ã ãã¤ã®ãªã¹ã®Acorn社ã¨ãããã¤ã³ã³(ä»ã§è¨ããã½ã³ã³)ãã³ãã¼ã®ä¸é¨éã§ãã£ãã彿Acornã¯ãç±³MOS Technology社ã®ã6502ãã¨ããããã»ããµã¼ããã¼ã¹ã«ãã¤ã³ã³ãä½ã£ã¦ããããããããã®
å¯å£«éï¼å³å¯ã«ã¯å¯å£«éããåé¢ããåä¼ç¤¾ã®å¯å£«éã»ãã³ã³ãã¯ã¿ã¼ã§ããé¢åãªã®ã§å¯å£«éï¼ããã®4æã«ï¼ARMã®ããã»ããµã³ã¢Cortex-M3ã®ã©ã¤ã»ã³ã·ã¼ã¨ãªãï¼ãã®ç¬¬ä¸å¼¾ã®ãããFM3ã·ãªã¼ãºãçºè¡¨ãã¾ããããæè¿å¤ãããï¼å½å 大æåå°ä½ã¡ã¼ã«ã¼ã®ARMã¸ã®å®éæ¿ãã¨ããã¨ããæ¹ãããã¨ããã¾ã§ãªããã§ããï¼å®éã®ã¨ããï¼æ±èï¼æ§NECï¼æ§ã«ããµã¹ï¼æ¥ç«ã¨ä¸è±ï¼ï¼æ²é»æ°ï¼ã·ã£ã¼ãã¨ãã£ãï¼ãã¤ã¯ãã³ã³ããã¼ã©ã大éã«ä½ã£ã¦å£²ãã¾ãã£ã¦ããæ¥æ¬ã®ã¡ã¼ã«ã¼ã®ã»ã¨ãã©ãï¼ãã£ããARMã³ã¢ã®ã徿ãããªã£ã¦ãããã¨ã«ã¯ã£ã¨ããããã¾ããããããã¦ã¿ãã¨ï¼ç¬èªããã»ããµã³ã¢ã«ãã ãã£ã¦ããã®ã¯ï¼å¤§æã§ã¯ããã½ããã¯ãããã§ã¯ãªããã¨æãã¾ããï¼å°ããã®ãããã®ç¶æ³ãèå¯ãã¦ã¿ããã¨æãã¾ããã1980å¹´ä»£ï¼æ¥æ¬ã®ç£æ¥ã¯å®ã«å¤ãã®åéã§ä¸çãããã«åè¨ãï¼æãä¸ã®æ¥ã謳æãã¦ãã¾ããããã®æã«æ¬¡
10æ22æ¥ãéå¬ ä¼å ´ï¼æ±äº¬ã³ã³ãã¡ã¬ã³ã¹ã»ã³ã¿ã¼ã»åå· é¡§å®¢åãã®è¬æ¼ä¼å ¼å±ç¤ºä¼ãARM Forum 2008ãã®åå¾ã«ã¯ã32bitçµã¿è¾¼ã¿ãã¤ã¯ãã³ã³ããã¼ã©(ãã¤ã³ã³)ç¨ã®ææ°ARMã³ã¢ãCortex-M3ãã«é¢ããã»ãã·ã§ã³ãçµã¾ãã¦ãããæ¬ã¬ãã¼ãã§ã¯ãã®ã»ãã·ã§ã³ãããä¸è¨ã®è¬æ¼æ¦è¦ããå ±åããã 1) Cortex-M3ã³ã¢ã®æ¦è¦ï¼ã¢ã¼ã 2) Cortex-M3ã³ã¢å èµãã¤ã³ã³ã®è£½åä¾1ï¼STãã¤ã¯ãã¨ã¬ã¯ãããã¯ã¹ 3) Cortex-M3ã³ã¢å èµãã¤ã³ã³ã®è£½åä¾2ï¼æ±è ã»ãã³ã³ãã¯ã¿ã¼ç¤¾ æåã«ç´¹ä»ããã®ã¯ãã¢ã¼ã æ ªå¼ä¼ç¤¾ãã£ã¼ã«ãã¢ããªã±ã¼ã·ã§ã³ã¨ã³ã¸ãã¢ãªã³ã° ã½ããã¦ã§ã¢æ å½ã·ãã¢ã¨ã³ã¸ãã¢ã®å¹³äºå¹¸åºæ°ã«ããã32ããã髿§è½MCUãä½ä¾¡æ ¼ã§å®ç¾ããCPUã³ã¢ãCortex-M3ãã¨é¡ããè¬æ¼ã§ããã ARMã³ã¢ã¯å¾æ¥ãSOC(System on a Chi
è±å½ARMãéçºãã32bit RISCåã®CPUã³ã¢ãARMã³ã¢ãã¯ãä¸çä¸ã®æºå¸¯é»è©±æ©ã«æ¨æºçã«æ¡ç¨ããã¦ããCPUã³ã¢ã§ãããPCã®CPUã¢ã¼ããã¯ãã£ãIntelã®x86ç³»ã«çµ±ä¸ããã¦ããããã«ãæºå¸¯é»è©±æ©ã®CPUã¢ã¼ããã¯ãã£ã¯ç¾å¨ã§ã¯ãARMã¢ã¼ããã¯ãã£ã«ã»ã¼çµ±ä¸ããã¦ããã ARMãè¨ç«ãããã®ã¯'90å¹´ã®ãã¨ã ãIntelã®è¨ç«ã'68å¹´ã ããããã®20å¹´ã»ã©å¾ã«ARMã¯èªçãããã¨ã«ãªããæåã®ãªãã£ã¹ã¯ãè±å½ã±ã³ããªãã¸éå¤ã®ç´å±ãæ¹é ãããã®ãçºè¶³å½æã®æè¡è ã¯12åããããã17å¹´å¾ã®ç¾å¨ãARMã¯å ¨ä¸çã«1,700åã®å¾æ¥å¡ãæãã伿¥ã«æé·ããã ãåç¥ã®æ¹ãå¤ãã¨æãããæºå¸¯é»è©±æ©ã®åºè·å°æ°ã¯PCã®åºè·å°æ°ãããã¯ããã«å¤ãã2006å¹´ã®å ¨ä¸çã®æºå¸¯é»è©±æ©åºè·å°æ°ã¯9å9,000ä¸å°ã§ããã2007å¹´ã«ã¯10å1,000ä¸å°ã«éãããã¨ãã¦ãã(ã¢ã¤ãµãã©ã¤
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}