Subversion Repositories or1k

Last modification

• Rev 1144 2003-04-09 20:40:10 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.