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ARM undefined instruction execution (Jason Wessel) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1938 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-05-22 23:06:04 +00:00
parent ba9a74dae0
commit 159f366388
1 changed files with 9 additions and 0 deletions
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9
target-arm/translate.c
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@ -1589,6 +1589,15 @@ static void disas_arm_insn(CPUState * env, DisasContext *s)
case 0x5: case 0x5:
case 0x6: case 0x6:
case 0x7: 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 */ /* load/store byte/word */
rn = (insn >> 16) & 0xf; rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf; rd = (insn >> 12) & 0xf;