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[/] [or1k/] [trunk/] [insight/] [gdb/] - Rev 1142

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  • Rev 1142, 2003-04-09 06:09:40 GMT
  • Author: sfurman
  • Log message:
    Speed up gdb when running with serial targets:

    When generating backtraces, the prologue of each function is scanned
    at least three times by architecture-independent code, e.g. to
    determine offsets of saved registers, identify frameless functions,
    etc. This new code adds straightforward caching of the information
    gleaned by or1k_scan_prologue() on a per-frame basis rather than
    storing it in global static variables. (This benefits both JTAG and
    serial gdb targets, though the JTAG target runs fast enough that it is
    not particularly needed.)

    When the register set is dumped by the serial target, e.g. at any
    breakpoint or interrupt, the 32 vector/FP registers were included in
    the dump (each 8 bytes long), though they aren't implemented. The new
    code tells gdb that unimplemented registers have zero length in the
    dump.

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