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815 OR1200 debug unit: prevent deadlock when trap instruction stalls

As per mailing list post <20120925160925.5725e06f@latmask.vernier.se>,
the debug unit could deadlock with the instruction decoder if the trap
instruction is held back by a pipeline stall. This change prevents that.

The problem can be reproduced by placing a breakpoint at an unfavorable
position with instruction cache enabled. In our test, this occurred
with or1200-cbasic when placing a breakpoint at test_bss using gdb, but
this is dependent on such factors as cache parameters and compilation
result.		 yannv 4234d 21h /openrisc/trunk/or1200/
813 or1200: Set correct PC after reset when parameter boot_adr is used

Signed-off-by: Olof Kindgren <olof@opencores.org>
Acked-by: Julius Baxter <juliusbaxter@gmail.com>		 olof 4249d 14h /openrisc/trunk/or1200/
809 OR1200: Regenerate documentation.

Forgot newline in version history table, so last entry was missing.		 julius 4365d 07h /openrisc/trunk/or1200/
808 OR1200: Add DSX bit support to SR.

Updated documentation, revision is now 13.

http://bugzilla.opencores.org/bugzilla4/show_bug.cgi?id=85		 julius 4365d 07h /openrisc/trunk/or1200/
806 OR1200: Fix for bug 90

http://bugzilla.opencores.org/bugzilla4/show_bug.cgi?id=90		 julius 4365d 08h /openrisc/trunk/or1200/
804 OR1200: Fix for bug 91

http://bugzilla.opencores.org/bugzilla4/show_bug.cgi?id=91		 julius 4365d 08h /openrisc/trunk/or1200/
802 OR1200: Fix for bug 88

http://bugzilla.opencores.org/bugzilla4/show_bug.cgi?id=88		 julius 4370d 13h /openrisc/trunk/or1200/
794 ORPSoC, or1200: split out or1200_fpu_intfloat_conv_except module into own file

Fixes lint warnings.		 julius 4403d 23h /openrisc/trunk/or1200/
788 or1200: Patch from R Diez to remove l.cust5 signal from a sensitivty list when it's not defined.

Signed-off-by: R Diez <rdiezmail-openrisc@yahoo.de>
Acked-by: Julius Baxter <juliusbaxter@gmail.com>		 julius 4428d 13h /openrisc/trunk/or1200/
679 Allow setting the boot address as an external
parameter. If no parameter is used, the value
from OR1200_BOOT_ADR will be used

Signed-off-by: Olof Kindgren <olof@opencores.org>
Acked-by: Julius Baxter <juliusbaxter@gmail.com>		 olof 4452d 13h /openrisc/trunk/or1200/
674 or1200: Fix for Bug 76 - Incorrect unsigned integer less-than compare with COMP3 option enabled julius 4494d 21h /openrisc/trunk/or1200/
647 or1200: update documentation to go with recent rtl commits julius 4615d 12h /openrisc/trunk/or1200/
645 or1200: Specification document source now in asciidoc format. ODT and MS Word format documents deprecated, PDF regenerated julius 4633d 11h /openrisc/trunk/or1200/
644 or1200: the infamous l.rfe fix, and bug fix for when multiply is disabled julius 4633d 12h /openrisc/trunk/or1200/
643 or1200: new ALU comparision implementation option, TLB invalidate register indicated as not present, multiply overflow detection bug fix julius 4633d 12h /openrisc/trunk/or1200/
642 or1200: add carry, overflow bits, and range exception julius 4633d 12h /openrisc/trunk/or1200/
641 or1200: fix serial multiply/divide bug julius 4633d 12h /openrisc/trunk/or1200/
640 or1200: add l.ext instructions, fix a MAC bug julius 4633d 12h /openrisc/trunk/or1200/
639 or1200: or1200_dpram.v change task set_gpr to function julius 4633d 12h /openrisc/trunk/or1200/
481 OR1200 Update. RTL and spec. julius 4859d 04h /openrisc/trunk/or1200/

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