From 6d093a4f499fd945b39bd55b307dd9192dc99ead Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Fri, 24 Jan 2014 10:57:41 +0100 Subject: target-i386: Fix I/O bitmap checks for in/out Commit 1b90d56e changed the implementation of in/out imm to not assign the accessed port number to cpu_T[0] as it appeared unnecessary. However, currently gen_check_io() makes use of cpu_T[0] to implement the I/O bitmap checks, so it's in fact still used and the change broke the check, leading to #GP in legitimate cases (and probably also allowing access to ports that shouldn't be allowed). This patch reintroduces the missing assignment for these cases. Signed-off-by: Kevin Wolf Reviewed-by: Richard Henderson --- target-i386/translate.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'target-i386/translate.c') diff --git a/target-i386/translate.c b/target-i386/translate.c index b0f227915a..5dd2450798 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -6284,6 +6284,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, case 0xe5: ot = mo_b_d32(b, dflag); val = cpu_ldub_code(env, s->pc++); + tcg_gen_movi_tl(cpu_T[0], val); gen_check_io(s, ot, pc_start - s->cs_base, SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes)); if (use_icount) @@ -6300,6 +6301,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, case 0xe7: ot = mo_b_d32(b, dflag); val = cpu_ldub_code(env, s->pc++); + tcg_gen_movi_tl(cpu_T[0], val); gen_check_io(s, ot, pc_start - s->cs_base, svm_is_rep(prefixes)); gen_op_mov_v_reg(ot, cpu_T[1], R_EAX); -- cgit v1.2.3