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authorKevin Wolf <kwolf@redhat.com>2014-01-24 10:57:41 +0100
committerKevin Wolf <kwolf@redhat.com>2014-02-19 16:40:19 +0100
commit6d093a4f499fd945b39bd55b307dd9192dc99ead (patch)
tree152a9f5dbff1887e4d7d09b3daa30fb7c2dc88ab /target-i386/translate.c
parent46eef33b89e936ca793e13c4aeea1414e97e8dbb (diff)
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 <kwolf@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-i386/translate.c')
-rw-r--r--target-i386/translate.c2
1 files changed, 2 insertions, 0 deletions
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);