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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-x433.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1662464874634100001 Content-Type: text/plain; charset="utf-8" With gen_jmp_rel, we may chain to the next tb instead of merely writing to eip and exiting. Signed-off-by: Richard Henderson --- target/i386/tcg/translate.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index 07c7764649..fdd17c3cf3 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -7355,24 +7355,18 @@ static bool disas_insn(DisasContext *s, CPUState *c= pu) case 0xe2: /* loop */ case 0xe3: /* jecxz */ { - TCGLabel *l1, *l2, *l3; - - tval =3D (int8_t)insn_get(env, s, MO_8); - tval +=3D s->pc - s->cs_base; - if (dflag =3D=3D MO_16) { - tval &=3D 0xffff; - } + TCGLabel *l1, *l2; + int diff =3D (int8_t)insn_get(env, s, MO_8); =20 l1 =3D gen_new_label(); l2 =3D gen_new_label(); - l3 =3D gen_new_label(); gen_update_cc_op(s); b &=3D 3; switch(b) { case 0: /* loopnz */ case 1: /* loopz */ gen_op_add_reg_im(s, s->aflag, R_ECX, -1); - gen_op_jz_ecx(s, s->aflag, l3); + gen_op_jz_ecx(s, s->aflag, l2); gen_jcc1(s, (JCC_Z << 1) | (b ^ 1), l1); break; case 2: /* loop */ @@ -7385,14 +7379,11 @@ static bool disas_insn(DisasContext *s, CPUState *c= pu) break; } =20 - gen_set_label(l3); - gen_update_eip_next(s); - tcg_gen_br(l2); + gen_set_label(l2); + gen_jmp_rel(s, MO_32, 0, 1); =20 gen_set_label(l1); - gen_jmp_im(s, tval); - gen_set_label(l2); - s->base.is_jmp =3D DISAS_EOB_ONLY; + gen_jmp_rel(s, dflag, diff, 0); } break; case 0x130: /* wrmsr */ --=20 2.34.1