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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 7800d 03h /or1k/tags/nog_patch_70/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 7833d 06h /or1k/tags/nog_patch_70/insight
1123 Renumber/rename SPRs to match latest architecture doc sfurman 7834d 12h /or1k/tags/nog_patch_70/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 7856d 10h /or1k/tags/nog_patch_70/insight
1114 Added cvs log keywords lampret 7871d 06h /or1k/tags/nog_patch_70/insight
1034 Fixed encoding for l.div/l.divu. lampret 8013d 07h /or1k/tags/nog_patch_70/insight
879 Initial version of OpenRISC Custom Unit Compiler added markom 8078d 17h /or1k/tags/nog_patch_70/insight
874 Command for displaying trace buffer added. simons 8088d 17h /or1k/tags/nog_patch_70/insight
801 l.muli instruction added markom 8170d 20h /or1k/tags/nog_patch_70/insight
722 floating point registers are obsolete; GPRs should be used instead markom 8198d 20h /or1k/tags/nog_patch_70/insight
720 single floating point support added markom 8199d 00h /or1k/tags/nog_patch_70/insight
717 some minor improvements markom 8199d 02h /or1k/tags/nog_patch_70/insight
714 do_stats introduced for faster no-stats execution markom 8200d 21h /or1k/tags/nog_patch_70/insight
709 eval_operands is now being generated markom 8204d 03h /or1k/tags/nog_patch_70/insight
706 insn_decode execution part replaced by generated function decode_execute; use --enable-simple to use runtime decoding markom 8204d 19h /or1k/tags/nog_patch_70/insight
703 small optimizations to dissasemble markom 8206d 00h /or1k/tags/nog_patch_70/insight
680 num_opcodes better because of linking. ivang 8215d 16h /or1k/tags/nog_patch_70/insight
679 extern CONST int num_opcodes -> extern CONST unsigned int or32_num_opcodes. ivang 8215d 18h /or1k/tags/nog_patch_70/insight
676 update of shared files markom 8217d 20h /or1k/tags/nog_patch_70/insight
671 wrong version was restored markom 8218d 00h /or1k/tags/nog_patch_70/insight
662 GNU binutils merge. ivang 8221d 22h /or1k/tags/nog_patch_70/insight
627 or32 restored markom 8235d 00h /or1k/tags/nog_patch_70/insight
623 update based on recent changes; arithmetic instructions does not modify carry yet markom 8235d 19h /or1k/tags/nog_patch_70/insight
615 cmov and extxx instructions; add, addi, and, andi now set flag markom 8238d 18h /or1k/tags/nog_patch_70/insight
613 init: trap exception occurs always; initialization of sr not needed anymore markom 8239d 23h /or1k/tags/nog_patch_70/insight
607 single step steps just one instruction ^c bug fixed markom 8241d 21h /or1k/tags/nog_patch_70/insight
603 fixed bfd markom 8243d 00h /or1k/tags/nog_patch_70/insight
593 ctrl-c handling fixed markom 8245d 21h /or1k/tags/nog_patch_70/insight
578 Insight markom 8247d 23h /or1k/tags/nog_patch_70/insight
577 info spr fixed markom 8248d 19h /or1k/tags/nog_patch_70/insight

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