[Qemu-devel] ARM: BKPT instructions should raise prefetch aborts with IFSR type 00010

[Alex Zuepke <azuepke@sysgo.com>]

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Hi,

while digging through some problems with BKPT exceptions on ARM, I
discovered that QEMU does not update IFSR on prefetch aborts. This
should be done since ARMv6 according to ARM docs. Please include.

Best Regards,
Alex

-- 
Alexander Zuepke                                azuepke@sysgo.com
SYSGO AG ~ Am Pfaffenstein 14 ~ 55270 Klein-Winternheim ~ Germany

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 target-arm: BKPT instructions should raise prefetch aborts with IFSR type 00010
 diff against qemu 0.14.0
 Signed-off-by: Alex Zuepke <azuepke@sysgo.com>
--- qemu-0.14.0.orig/target-arm/translate.c	2011-02-16 15:44:05.000000000 +0100
+++ qemu-0.14.0/target-arm/translate.c	2011-03-25 11:22:03.000000000 +0100
@@ -6389,6 +6389,7 @@
                 goto illegal_op;
             }
             /* bkpt */
+            env->cp15.c5_insn = 2;
             gen_exception_insn(s, 4, EXCP_BKPT);
             break;
         case 0x8: /* signed multiply */
@@ -8930,6 +8931,7 @@
             break;
 
         case 0xe: /* bkpt */
+            env->cp15.c5_insn = 2;
             gen_exception_insn(s, 2, EXCP_BKPT);
             break;