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[/] [or1k/] [tags/] [nog_patch_40/] [insight/] - Rev 1765

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1142 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.		 sfurman 7701d 04h /or1k/tags/nog_patch_40/insight/
1124 Initialize or1k_implementation with reasonable defaults for the number
of implementation registers. This doesn't affect the jtag or sim
targets at all because those values are always overwritten when
or1k_implementation is initialized. However, it is necessary when
connecting to remote gdb stubs through a serial port or socket, since
or1k_implementation is not yet initialized for those targets.		 sfurman 7734d 06h /or1k/tags/nog_patch_40/insight/
1123 Renumber/rename SPRs to match latest architecture doc sfurman 7735d 13h /or1k/tags/nog_patch_40/insight/
1115 Fix stack-walking code in or1k_frame_chain() and or1k_skip_prologue()
to expect the function prologue that or32 gcc currently emits, rather
than a previous incarnation of the or1k ABI.		 sfurman 7757d 10h /or1k/tags/nog_patch_40/insight/
1114 Added cvs log keywords lampret 7772d 06h /or1k/tags/nog_patch_40/insight/
1034 Fixed encoding for l.div/l.divu. lampret 7914d 08h /or1k/tags/nog_patch_40/insight/
879 Initial version of OpenRISC Custom Unit Compiler added markom 7979d 17h /or1k/tags/nog_patch_40/insight/
874 Command for displaying trace buffer added. simons 7989d 18h /or1k/tags/nog_patch_40/insight/
801 l.muli instruction added markom 8071d 21h /or1k/tags/nog_patch_40/insight/
722 floating point registers are obsolete; GPRs should be used instead markom 8099d 21h /or1k/tags/nog_patch_40/insight/

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