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charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::434; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x434.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 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: 1666179506557100001 The s390x EXecute instruction is a bit weird as we synthesis the executed instruction from what we have stored in memory. When plugins are enabled this breaks because we detect the ld_code2() loading from a non zero offset without the rest of the instruction being there. Work around this with a special helper to inform the rest of the translator about the instruction so things stay consistent. Signed-off-by: Alex Benn=C3=A9e Cc: Richard Henderson --- include/exec/translator.h | 17 +++++++++++++++++ target/s390x/tcg/translate.c | 4 ++++ 2 files changed, 21 insertions(+) diff --git a/include/exec/translator.h b/include/exec/translator.h index 3b77f5f4aa..156f568701 100644 --- a/include/exec/translator.h +++ b/include/exec/translator.h @@ -211,6 +211,23 @@ translator_ldq_swap(CPUArchState *env, DisasContextBas= e *db, return ret; } =20 +/** + * translator_fake_ldw - fake instruction load + * @insn16: 2 byte instruction + * @pc: program counter of instruction + * + * This is a special case helper used where the instruction we are + * about to translate comes from somewhere else (e.g. being + * re-synthesised for s390x "ex"). It ensures we update other areas of + * the translator with details of the executed instruction. + */ + +static inline void translator_fake_ldw(uint16_t insn16, abi_ptr pc) +{ + plugin_insn_append(pc, &insn16, sizeof(insn16)); +} + + /* * Return whether addr is on the same page as where disassembly started. * Translators can use this to enforce the rule that only single-insn diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index 1d2dddab1c..a07b8b2d23 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -6317,12 +6317,16 @@ static const DisasInsn *extract_insn(CPUS390XState = *env, DisasContext *s) if (unlikely(s->ex_value)) { /* Drop the EX data now, so that it's clear on exception paths. */ TCGv_i64 zero =3D tcg_const_i64(0); + int i; tcg_gen_st_i64(zero, cpu_env, offsetof(CPUS390XState, ex_value)); tcg_temp_free_i64(zero); =20 /* Extract the values saved by EXECUTE. */ insn =3D s->ex_value & 0xffffffffffff0000ull; ilen =3D s->ex_value & 0xf; + for (i =3D 0; i < ilen; i +=3D 2) { + translator_fake_ldw(extract64(insn, 48 - (i * 8), 16), pc + i); + } op =3D insn >> 56; } else { insn =3D ld_code2(env, s, pc); --=20 2.34.1