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Sun, 31 May 2020 15:19:53 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PATCH] target/m68k: implement opcode fetoxm1 Date: Sun, 31 May 2020 15:19:51 +0200 Message-Id: <20200531131951.631902-1-laurent@vivier.eu> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:5leHTlG1pCom/TOd29aCcdHH4V71+cbHvz6npuDqcPq0xUDOm7d IwA1RUXz907inHyQ5ZHwe8DpVacIPqDaEBSRqw6AdNuLsIEHKu4NbP1VXi9TfSWWPGCuFlR Sj2HmFaVrDCprzpoLRZbElovWy+n0O9FgwhQUZkNfnPUNEyvr+yiTkDmHP3CLlzA2ynLmmF gMmh/VmXpz7zHPC9lnsyg== X-UI-Out-Filterresults: notjunk:1;V03:K0:/XYQQfUyNHg=:QitNltI511sdn2YSwxT9wB MVe7aVSSvoNl+dXdreix4VRS5OE/AWwV7r5dEnFTTWIiiwJ6tccFL3poozCK5OocE+1xKvJoU T7x/rKBPLN2d8v1uFXDXHm3Nky+MwsgN7K2+EGEPkJ0LcQkJrLZYbOw3ip2dYtDoHzjwDHYgZ SW/GxmSML8xnn0QxckHQNlmkq4jUVsWmP1aqTWK6MeCgPv+ALFANUZuZFpCfXLW7IC4HY35KO aD+06yCBbnppGfWJx3DjunoFq4+HUsrrZSVZ5VLnp7NW6ThSqUj0uwre3r6ZeoRLQUB4vj9F3 d6ybxEiQhK+2+67VXhpt1zdKFrJyN/IRR9t+rlpmAn9JtTq/RA1wqBOyHCPbYvEV7KMghPFzz i2DdZ0Ij8XncJvDgiOdhlW7Xvn4b8+Q9AZRTgM7hvB8Q+8xcoN/e7Q7RD0ft742iBqYbR4Coq 7aH9NkAkU4XrN6bnSc/YG7YqEVRZR+NmsECo/1/ncOg//w/t+97s0cBWKZb5Qw3XPW6Mti+AK GUYDuSb7H3g70zK/fJB+IRX0tqYSn+RorVbbuRT4+cCQuygJnbxy6y6aO77SSueQW+a8M1LKM uhJBIB7c7ga/3+Tp/U4ypbE2I1L+PMJJjLSAvw7zpoiZalQsjXcaUYjEdl1PU8Wzpj43Vk8ff OKct8+/TpDWZf+FsA7475nmg/roLciWMTXxPLXtvExWV+5NCfoCg3sMFRZoKtMiyq2Yg4dUsW RDREYQinf2JRv6ziv/osMQq6hrQpy/uwFtBHxznx4AvVOpJP4fdoDnrNGcIz/PJTgoEBnZMRL xRcTMNdQ2aQug2vFrQweCiek1BmekbrDI5rLcIsCsmi+6uNUStu9mSnZDwwVRccgCbxnQko 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: none client-ip=217.72.192.73; envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/31 09:19:53 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Example provided in the launchpad bug fails with: qemu: uncaught target signal 4 (Illegal instruction) - core dumped Illegal instruction (core dumped) It appears fetoxm1 is not implemented: IN: expm1f 0x800005cc: fetoxm1x %fp2,%fp0 Disassembler disagrees with translator over instruction decoding Please report this to qemu-devel@nongnu.org (gdb) x/2hx 0x800005cc 0x800005cc: 0xf200 0x0808 This patch adds the instruction. Bug: https://bugs.launchpad.net/qemu/+bug/1881450 Signed-off-by: Laurent Vivier Reviewed-by: Richard Henderson --- target/m68k/helper.h | 1 + target/m68k/fpu_helper.c | 5 +++++ target/m68k/translate.c | 3 +++ 3 files changed, 9 insertions(+) diff --git a/target/m68k/helper.h b/target/m68k/helper.h index feee7be62655..77808497a95c 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -83,6 +83,7 @@ DEF_HELPER_3(fatan, void, env, fp, fp) DEF_HELPER_3(fasin, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp) DEF_HELPER_3(fatanh, void, env, fp, fp) +DEF_HELPER_3(fetoxm1, void, env, fp, fp) DEF_HELPER_3(ftanh, void, env, fp, fp) DEF_HELPER_3(fsinh, void, env, fp, fp) DEF_HELPER_3(fcosh, void, env, fp, fp) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 36e6c704d1d0..9acf60dfd443 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -641,6 +641,11 @@ void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPR= eg *val) res->d =3D floatx80_atanh(val->d, &env->fp_status); } =20 +void HELPER(fetoxm1)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d =3D floatx80_etoxm1(val->d, &env->fp_status); +} + void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d =3D floatx80_tanh(val->d, &env->fp_status); diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 0f80888203d3..db4e69bac195 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5146,6 +5146,9 @@ DISAS_INSN(fpu) case 0x06: /* flognp1 */ gen_helper_flognp1(cpu_env, cpu_dest, cpu_src); break; + case 0x08: /* fetoxm1 */ + gen_helper_fetoxm1(cpu_env, cpu_dest, cpu_src); + break; case 0x09: /* ftanh */ gen_helper_ftanh(cpu_env, cpu_dest, cpu_src); break; --=20 2.26.2