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5 commits

Author SHA1 Message Date
Lassi Tuura
5f38f35d5d Drop a call frame in tdep_trace and avoid a call to unw_step.
Dropping the extra frame for unw_backtrace itself using unw_step is
approximately 15% slower than skipping the frame in tdep_trace.  So
drop the frame in the latter, and make the function a private
implementation detail for libunwind, not an exported interface.

Also moves unw_getcontext call back into unw_backtrace to avoid an
extra call frame in case slow_backtrace does not get inlined into
unw_backtrace.
2011-04-01 00:00:39 -07:00
Arun Sharma
7ff83c051e Fix up compilation and test failures 2011-03-24 23:32:25 -07:00
Lassi Tuura
44a14d1364 Integrate fast trace into backtrace(). 2011-03-24 22:33:55 -07:00
Lassi Tuura
9e98f15e9a Fast back-trace for x86_64 for only collecting the call stack.
Adds new function to perform a pure stack walk without unwinding,
functionally similar to backtrace() but accelerated by an address
attribute cache the caller maintains across calls.
2011-03-24 22:33:17 -07:00
Daniel Jacobowitz
3842dac733 Add initial ARM and MIPS support. To support this, also enable the
reading of .debug_frame sections (used in lieu of .eh_frame sections
when they're not available).
2008-02-04 17:16:37 -07:00