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Commit: MN10300 SIM: Fix bug in emulation of SUB Rm,Rn,Rd insn
- From: Nick Clifton <nickc at redhat dot com>
- To: gdb-patches at sourceware dot org
- Date: Mon, 20 Jun 2011 17:51:29 +0100
- Subject: Commit: MN10300 SIM: Fix bug in emulation of SUB Rm,Rn,Rd insn
Hi Guys,
I am applying the patch below as an obvious fix. It corrects the
calculation of the carry flag in the MN10300 simulator's emulation of
the SUB Rm,Rn,Rd instruction.
Cheers
Nick
sim/mn10300/ChangeLog
2011-06-20 Nick Clifton <nickc@redhat.com>
* am33.igen (sub Rm,Rn,Rd): Fix computation of carry flag.
Index: sim/mn10300/am33.igen
===================================================================
RCS file: /cvs/src/src/sim/mn10300/am33.igen,v
retrieving revision 1.9
diff -u -3 -p -r1.9 am33.igen
--- sim/mn10300/am33.igen 26 Jun 2004 22:18:18 -0000 1.9
+++ sim/mn10300/am33.igen 20 Jun 2011 16:48:27 -0000
@@ -2573,7 +2573,7 @@
z = (difference == 0);
n = (difference & 0x80000000);
- c = (source1 > source1);
+ c = (source1 > source2);
v = ((source1 & 0x80000000) == (source2 & 0x80000000)
&& (source1 & 0x80000000) != (difference & 0x80000000));