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author | David Brownell <dbrownell@users.sourceforge.net> | 2009-12-01 21:47:45 -0800 |
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committer | David Brownell <dbrownell@users.sourceforge.net> | 2009-12-01 21:47:45 -0800 |
commit | 66ca84b58114ad73b5843f62f9f5fbead1126fca (patch) | |
tree | c154e6084a6ccc742d1ec8be002ffa187a8c61b5 /doc/manual/primer | |
parent | 1c7d3d200c6f20d4bb689176373368cd497d797f (diff) | |
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ARM: core DPM support for watchpoints
This is a NOP unless the underlying core exposes two new methods, and
neither of the two cores using this (ARM11xx, Cortex-A8) do so yet.
This patch only updates those cores so they pass a flag saying whether
or not to update breakpoint and watchpoint status before resuming; and
removing some now-needless anti-segfault code from ARM11. Cortex-A8
didn't have that code ... yes, it segfaulted when setting watchpoints.
NOTE: this uses a slightly different strategy for setting/clearing
breakpoints than the ARM7/ARM9/etc code uses. It leaves them alone
unless it's *got* to change something, to speed halt/resume cycles
(including single stepping).
ALSO NOTE: this under-delivers for Cortex-A8, where regions with size
up to 2 GBytes can be watched ... it handles watchpoints which ARM11 can
also handle (size 1/2/4 bytes). Should get fixed later.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Diffstat (limited to 'doc/manual/primer')
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