This patch fixes the execution of undefined instructions for ARM. With
out it the virtualized CPU incorrectly executes the do_abort vector instead.
signed-off-by: [EMAIL PROTECTED]
Jason.
Index: qemu/target-arm/translate.c
===================================================================
--- qemu.orig/target-arm/translate.c
+++ qemu/target-arm/translate.c
@@ -1589,6 +1589,15 @@ static void disas_arm_insn(CPUState * en
case 0x5:
case 0x6:
case 0x7:
+ /* Check for undefined extension instructions
+ * per the ARM Bible IE:
+ * xxxx 0111 1111 xxxx xxxx xxxx 1111 xxxx
+ */
+ sh = (0xf << 20) | (0xf << 4);
+ if (op1 == 0x7 && ((insn & sh) == sh))
+ {
+ goto illegal_op;
+ }
/* load/store byte/word */
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
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