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13.4.9 GDB¤È¥ê¥â¡¼¥ÈMIPS¥Ü¡¼¥É

GDB¤Ï¡¢ MIPS¤Î¥ê¥â¡¼¥È¡¦¥Ç¥Ð¥Ã¥°ÍѤΥץí¥È¥³¥ë¤ò»È¤Ã¤Æ¡¢ ¥·¥ê¥¢¥ë²óÀþ¤ËÀܳ¤µ¤ì¤¿MIPS¥Ü¡¼¥É¤ÈÄÌ¿®¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¤³¤ì¤Ï¡¢ GDB¤ò‘--target=mips-idt-ecoff’¤Ë¤è¤Ã¤Æ¹½À®¤¹¤ë¤³¤È¤Ë¤è¤Ã¤Æ¡¢ ÍøÍѤ¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

¥¿¡¼¥²¥Ã¥È¡¦¥Ü¡¼¥É¤È¤ÎÀܳ¤ò»ØÄꤹ¤ë¤Ë¤Ï¡¢ °Ê²¼¤ÎGDB¥³¥Þ¥ó¥É¤ò»ÈÍѤ·¤Þ¤¹¡£

target mips port

¥Ü¡¼¥É¾å¤Ç¥×¥í¥°¥é¥à¤ò¼Â¹Ô¤¹¤ë¤Ë¤Ï¡¢ °ú¿ô¤Ë¥æ¡¼¥¶¡¦¥×¥í¥°¥é¥à¤Î̾Á°¤ò»ØÄꤷ¤Ægdb¤òµ¯Æ°¤·¤Þ¤¹¡£ ¥Ü¡¼¥É¤ËÀܳ¤¹¤ë¤Ë¤Ï¡¢ ‘target mips port’¥³¥Þ¥ó¥É¤ò»ÈÍѤ·¤Þ¤¹¡£ port¤Ï¡¢ ¥Ü¡¼¥É¤ËÀܳ¤µ¤ì¤Æ¤¤¤ë¥·¥ê¥¢¥ë¡¦¥Ý¡¼¥È¤Î̾Á°¤Ç¤¹¡£ ¥×¥í¥°¥é¥à¤¬¤Þ¤À¥Ü¡¼¥É¤Ë¥À¥¦¥ó¥í¡¼¥É¤µ¤ì¤Æ¤¤¤Ê¤¤¤Î¤Ç¤¢¤ì¤Ð¡¢ load¥³¥Þ¥ó¥É¤ò»È¤Ã¤Æ¥À¥¦¥ó¥í¡¼¥É¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¤½¤Î¸å¡¢ Ä̾ïÍøÍѤǤ­¤ë¤¹¤Ù¤Æ¤ÎGDB¥³¥Þ¥ó¥É¤ò»È¤¦¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

Î㤨¤Ð°Ê²¼¤Î¼ê½ç¤Ç¤Ï¡¢ ¥Ç¥Ð¥Ã¥¬¤ò»È¤¦¤³¤È¤Ë¤è¤Ã¤Æ¡¢ ¥·¥ê¥¢¥ë¡¦¥Ý¡¼¥È¤ò·Ðͳ¤·¤Æ¥¿¡¼¥²¥Ã¥È¡¦¥Ü¡¼¥É¤ËÀܳ¤·¤¿¸å¤Ë¡¢ prog¤È¸Æ¤Ð¤ì¤ë¥×¥í¥°¥é¥à¤ò¥í¡¼¥É¤·¤Æ¼Â¹Ô¤·¤Æ¤¤¤Þ¤¹¡£

host$ gdb prog
GDB is free software and …
(gdb) target mips /dev/ttyb
(gdb) load prog
(gdb) run
target mips hostname:portnumber

GDB¤Î¥Û¥¹¥È¹½À®¤Ë¤è¤Ã¤Æ¤Ï¡¢ ‘hostname:portnumber’¤È¤¤¤¦¹½Ê¸¤ò»È¤¦¤³¤È¤Ç¡¢ ¥·¥ê¥¢¥ë¡¦¥Ý¡¼¥È¤ÎÂå¤ï¤ê¤Ë ¡ÊÎ㤨¤Ð¡¢ üËö¿½Å²½ÁõÃ֤ˤè¤Ã¤Æ´ÉÍý¤µ¤ì¤Æ¤¤¤ë¥·¥ê¥¢¥ë²óÀþ¤Ø¤Î¡Ë TCPÀܳ¤ò»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

target pmon port
target ddb port
target lsi port

GDB¤Ï¡¢ MIPS¥¿¡¼¥²¥Ã¥È¤ËÂФ·¤Æ¡¢ °Ê²¼¤ÎÆÃÊ̤ʥ³¥Þ¥ó¥É¤â¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤Þ¤¹¡£

set processor args
show processor

¥×¥í¥»¥Ã¥µ¤Î¼ïÎà¤Ë¸ÇÍ­¤Î¥ì¥¸¥¹¥¿¤Ë¥¢¥¯¥»¥¹¤·¤¿¤¤¾ì¹ç¤Ë¤Ï¡¢ set processor¥³¥Þ¥ó¥É¤ò»È¤Ã¤ÆMIPS¥×¥í¥»¥Ã¥µ¤Î¼ïÎà¤òÀßÄꤷ¤Þ¤¹¡£ Î㤨¤Ð¡¢ set processor r3041¤Ï¡¢ 3041¥Á¥Ã¥×¤ÇÍ­¸ú¤ÊCPO¥ì¥¸¥¹¥¿¤ò»È¤¦¤è¤¦¡¢ GDB¤ËÂФ·¤ÆÄÌÃΤ·¤Þ¤¹¡£ GDB¤¬»È¤Ã¤Æ¤¤¤ëMIPS¥×¥í¥»¥Ã¥µ¤Î¼ïÎà¤òÃΤë¤Ë¤Ï¡¢ show processor¥³¥Þ¥ó¥É¤ò»È¤¤¤Þ¤¹¡£ GDB¤¬»È¤Ã¤Æ¤¤¤ë¥ì¥¸¥¹¥¿¤òÃΤë¤Ë¤Ï¡¢ info reg¥³¥Þ¥ó¥É¤ò»È¤¤¤Þ¤¹¡£

set mipsfpu double
set mipsfpu single
set mipsfpu none
show mipsfpu

MIPSÉâÆ°¾®¿ôÅÀ¥³¥×¥í¥»¥Ã¥µ¤ò¥µ¥Ý¡¼¥È¤·¤Ê¤¤¥¿¡¼¥²¥Ã¥È¡¦¥Ü¡¼¥É¤ò»È¤¦¾ì¹ç¤Ï¡¢ ‘set mipsfpu none’¥³¥Þ¥ó¥É¤ò»È¤¦É¬Íפ¬¤¢¤ê¤Þ¤¹ ¡Ê¤³¤Î¤è¤¦¤Ê¤³¤È¤¬É¬Íפʾì¹ç¤Ë¤Ï¡¢ ½é´ü²½¥Õ¥¡¥¤¥ë¤ÎÃæ¤Ë¤½¤Î¥³¥Þ¥ó¥É¤òÆþ¤ì¤Æ¤·¤Þ¤Ã¤Æ¤â¤è¤¤¤Ç¤·¤ç¤¦¡Ë¡£ ¤³¤ì¤Ë¤è¤Ã¤Æ¡¢ ÉâÆ°¾®¿ôÃͤòÊÖ¤¹´Ø¿ô¤ÎÌá¤êÃͤò¸«¤Ä¤±¤ëÊýË¡¤òGDB¤ËÃΤ餻¤Þ¤¹¡£ ¤Þ¤¿¤³¤ì¤Ë¤è¤ê¡¢ ¥Ü¡¼¥É¾å¤Ç´Ø¿ô¤ò¸Æ¤Ó½Ð¤¹¤È¤­¤Ë¡¢ GDB¤ÏÉâÆ°¾®¿ôÅÀ¥ì¥¸¥¹¥¿¤ÎÆâÍÆ¤òÂàÈò¤¹¤ëɬÍפ¬¤Ê¤¯¤Ê¤ê¤Þ¤¹¡£ R4650¥×¥í¥»¥Ã¥µ¾å¤Ë¤¢¤ë¤è¤¦¤Ê¡¢ ñÀºÅÙÉâÆ°¾®¿ô¤À¤±¤ò¥µ¥Ý¡¼¥È¤¹¤ëÉâÆ°¾®¿ôÅÀ¥³¥×¥í¥»¥Ã¥µ¤ò»È¤Ã¤Æ¤¤¤ë¾ì¹ç¤Ë¤Ï¡¢ ‘set mipsfpu single’¥³¥Þ¥ó¥É¤ò»È¤¤¤Þ¤¹¡£ ¥Ç¥Õ¥©¥ë¥È¤ÎÇÜÀºÅÙÉâÆ°¾®¿ôÅÀ¥³¥×¥í¥»¥Ã¥µ¤Ï¡¢ ‘set mipsfpu double’¤Ë¤è¤Ã¤ÆÁªÂò¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

°ÊÁ°¤Î¥Ð¡¼¥¸¥ç¥ó¤Ç¤Ï¡¢ Í­¸ú¤ÊÁªÂò»è¤Ï¡¢ ÇÜÀºÅÙÉâÆ°¾®¿ô¥³¥×¥í¥»¥Ã¥µ¤ò»È¤¦ÀßÄê¤ÈÉâÆ°¾®¿ôÅÀ¥³¥×¥í¥»¥Ã¥µ¤ò»È¤ï¤Ê¤¤ÀßÄê¤À¤±¤Ç¤·¤¿¡£ ¤·¤¿¤¬¤Ã¤Æ¡¢ ‘set mipsfpu on’¤ÇÇÜÀºÅÙÉâÆ°¾®¿ô¥³¥×¥í¥»¥Ã¥µ¤¬ÁªÂò¤µ¤ì¡¢ ‘set mipsfpu off’¤ÇÉâÆ°¾®¿ôÅÀ¥³¥×¥í¥»¥Ã¥µ¤ò»È¤ï¤Ê¤¤¤È¤¤¤¦ÀßÄ꤬ÁªÂò¤µ¤ì¤Æ¤¤¤Þ¤·¤¿¡£

¾¤Î¾ì¹ç¤ÈƱÍÍ¡¢ mipsfpuÊÑ¿ô¤Ë´Ø¤¹¤ëÀßÄê¤Ï¡¢ ‘show mipsfpu’¤Ë¤è¤Ã¤ÆÌ䤤¹ç¤ï¤»¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

set remotedebug n
show remotedebug

remotedebugÊÑ¿ô¤òÀßÄꤹ¤ë¤³¤È¤Ë¤è¤Ã¤Æ¡¢ ¥Ü¡¼¥É¤È¤ÎÄÌ¿®¤Ë´Ø¤¹¤ë¤¤¤¯¤Ä¤«¤Î¥Ç¥Ð¥Ã¥°ÍѤξðÊó¤ò¸«¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ‘set remotedebug 1’¤Ë¤è¤Ã¤ÆÃÍ1¤òÀßÄꤹ¤ë¤È¡¢ ¤¹¤Ù¤Æ¤Î¥Ñ¥±¥Ã¥È¤¬É½¼¨¤µ¤ì¤Þ¤¹¡£ Ãͤò2¤ËÀßÄꤹ¤ë¤È¡¢ ¤¹¤Ù¤Æ¤Îʸ»ú¤¬É½¼¨¤µ¤ì¤Þ¤¹¡£ ‘show remotedebug’¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤Æ¡¢ ¤¤¤Ä¤Ç¤â¸½ºß¤ÎÀßÄêÃͤòÄ´¤Ù¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£

set timeout seconds
set retransmit-timeout seconds
show timeout
show retransmit-timeout

MIPS¥ê¥â¡¼¥È¡¦¥×¥í¥È¥³¥ë¤Ë¤ª¤±¤ë¥Ñ¥±¥Ã¥ÈÂÔ¤Á¤Î¾õÂ֤ǤΥ¿¥¤¥à¥¢¥¦¥È»þ´Ö¤ò¡¢ set timeout seconds¥³¥Þ¥ó¥É¤ÇÀ©¸æ¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¥Ç¥Õ¥©¥ë¥È¤Ï5ÉäǤ¹¡£ ƱÍͤˡ¢ ¥Ñ¥±¥Ã¥È¤ËÂФ¹¤ë³Îǧ ¡ÊACK¡Ë ¤òÂԤäƤ¤¤ë¾õÂ֤ǤΥ¿¥¤¥à¥¢¥¦¥È»þ´Ö¤ò¡¢ set retransmit-timeout seconds¥³¥Þ¥ó¥É¤ÇÀ©¸æ¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£ ¥Ç¥Õ¥©¥ë¥È¤Ï3ÉäǤ¹¡£ ¤½¤ì¤¾¤ì¤ÎÃͤòshow timeout¤Èshow retransmit-timeout¤ÇÄ´¤Ù¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹ ¡Ê¤É¤Á¤é¤Î¥³¥Þ¥ó¥É¤â¡¢ GDB¤¬‘--target=mips-idt-ecoff’ÍѤ˹½À®¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Î¤ß»ÈÍѲÄǽ¤Ç¤¹¡Ë¡£

set timeout¤ÇÀßÄꤵ¤ì¤¿¥¿¥¤¥à¥¢¥¦¥È»þ´Ö¤Ï¡¢ ¥æ¡¼¥¶¡¦¥×¥í¥°¥é¥à¤¬Ää»ß¤¹¤ë¤Î¤òGDB¤¬ÂԤäƤ¤¤ë´Ö¤ÏŬÍѤµ¤ì¤Þ¤»¤ó¡£ ¤³¤Î¾ì¹ç¤Ë¤Ï¡¢ GDB¤Ï±Ê±ó¤ËÂÔ¤Á³¤±¤Þ¤¹¡£ ¤³¤ì¤Ï¡¢ Ää»ß¤¹¤ë¤Þ¤Ç¤Ë¥×¥í¥°¥é¥à¤¬¤É¤ÎÄøÅÙŤ¯¼Â¹Ô¤ò·Ñ³¤¹¤ë¤Î¤«¤òÃΤëÊýË¡¤¬¤Ê¤¤¤«¤é¤Ç¤¹¡£


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