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target-arm: Handle 'smc' as an undefined instruction 

Refine check on bkpt so that smc and undefined instruction encodings are
handled as an undefined instruction and trap.

Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
This commit is contained in:
Adam Lackorzynski 2010-12-07 12:01:44 +00:00 committed by Peter Maydell
parent 4809c612bc
commit 49e14940ad
1 changed files with 8 additions and 1 deletions
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9
target-arm/translate.c
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@ -6346,7 +6346,14 @@ static void disas_arm_insn(CPUState * env, DisasContext *s)
dead_tmp(tmp2);
store_reg(s, rd, tmp);
break;
case 7: /* bkpt */
case 7:
/* SMC instruction (op1 == 3)
and undefined instructions (op1 == 0 || op1 == 2)
will trap */
if (op1 != 1) {
goto illegal_op;
}
/* bkpt */
gen_set_condexec(s);
gen_set_pc_im(s->pc - 4);
gen_exception(EXCP_BKPT);