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[/] [openrisc/] [trunk/] [or1200/] - Rev 815

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  • Rev 815 2012-10-04 09:52:36 GMT
  • Author: yannv
  • Log message:
    OR1200 debug unit: prevent deadlock when trap instruction stalls

    As per mailing list post <20120925160925.5725e06f@latmask.vernier.se>,
    the debug unit could deadlock with the instruction decoder if the trap
    instruction is held back by a pipeline stall. This change prevents that.

    The problem can be reproduced by placing a breakpoint at an unfavorable
    position with instruction cache enabled. In our test, this occurred
    with or1200-cbasic when placing a breakpoint at test_bss using gdb, but
    this is dependent on such factors as cache parameters and compilation
    result.
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[FOLDER] openrisc/ 815  4450d 14h yannv View Log RSS feed
[NODE][FOLDER] branches/ 795  4614d 05h olof View Log RSS feed
[NODE][FOLDER] tags/ 783  4661d 03h jeremybennett View Log RSS feed
[NODE][FOLDER] trunk/ 815  4450d 14h yannv View Log RSS feed
[NODE][NODE][FOLDER] bootloaders/ 796  4613d 14h yannv View Log RSS feed
[NODE][NODE][FOLDER] docs/ 648  4831d 04h julius View Log RSS feed
[NODE][NODE][FOLDER] gnu-dev/ 781  4663d 14h jeremybennett View Log RSS feed
[NODE][NODE][FOLDER] gnu-patches/ 170  5273d 10h jeremybennett View Log RSS feed
[NODE][NODE][FOLDER] gnu-src/ 812  4529d 14h stekern View Log RSS feed
[NODE][NODE][FOLDER] linux/ 380  5185d 07h julius View Log RSS feed
[NODE][NODE][FOLDER] or1ksim/ 797  4610d 11h pgavin View Log RSS feed
[NODE][NODE][FOLDER] or1k_startup/ 617  4883d 13h olof View Log RSS feed
[NODE][NODE][FOLDER] or1200/ 815  4450d 14h yannv View Log RSS feed
[NODE][NODE][NODE][FOLDER] bench/ 10  5678d 15h unneback View Log RSS feed
[NODE][NODE][NODE][FOLDER] doc/ 809  4581d 00h julius View Log RSS feed
[NODE][NODE][NODE][FOLDER] lib/ 10  5678d 15h unneback View Log RSS feed
[NODE][NODE][NODE][FOLDER] lint/ 10  5678d 15h unneback View Log RSS feed
[NODE][NODE][NODE][FOLDER] rtl/ 815  4450d 14h yannv View Log RSS feed
[NODE][NODE][NODE][FOLDER] sim/ 10  5678d 15h unneback View Log RSS feed
[NODE][NODE][NODE][FOLDER] syn/ 10  5678d 15h unneback View Log RSS feed
[NODE][NODE][FOLDER] orpsocv2/ 815  4450d 14h yannv View Log RSS feed
[NODE][NODE][FOLDER] or_debug_proxy/ 682  4667d 14h skrzyp View Log RSS feed
[NODE][NODE][FOLDER] rtos/ 811  4568d 12h skrzyp View Log RSS feed
[NODE][NODE][FOLDER] toolchain_install_scripts/ 407  5152d 01h julius View Log RSS feed
[NODE][NODE][FOLDER] uClibc/ 382  5185d 07h julius View Log RSS feed

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