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bh=IW47soXfphW+eoV4lhxIi411QoI1SQPgtHMfVAKYB7Q=; b=CEWXdmDTP1nPDvqpVljCaAcNAVoCo0TVfgr9D/OHsO78WDqT5/OBPiu3RYJTirtQkzf/Of B+svwX2VmrIlT6mK9HQ74JbN/Ap+HsB6YONFEwvrSX7meusyrk5Bu1JC1Kqu0KXfXHKmDQ Hiv2zlBkeXcE5DjXOfwCTlQHTp+Me3E= X-MC-Unique: BXnGAFTdNrKP7Kpvx2V92g-1 From: Thomas Huth To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , Ilya Leoshkevich , qemu-stable@nongnu.org, David Hildenbrand , Richard Henderson Subject: [PULL 08/11] target/s390x: Fix LAALG not updating cc_src Date: Tue, 7 Nov 2023 19:32:25 +0100 Message-ID: <20231107183228.276424-9-thuth@redhat.com> In-Reply-To: <20231107183228.276424-1-thuth@redhat.com> References: <20231107183228.276424-1-thuth@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.6 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=170.10.133.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1699382031738100006 Content-Type: text/plain; charset="utf-8" From: Ilya Leoshkevich LAALG uses op_laa() and wout_addu64(). The latter expects cc_src to be set, but the former does not do it. This can lead to assertion failures if something sets cc_src to neither 0 nor 1 before. Fix by introducing op_laa_addu64(), which sets cc_src, and using it for LAALG. Fixes: 4dba4d6fef61 ("target/s390x: Use atomic operations for LOAD AND OP") Cc: qemu-stable@nongnu.org Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand Reviewed-by: Richard Henderson Message-ID: <20231106093605.1349201-4-iii@linux.ibm.com> Signed-off-by: Thomas Huth --- target/s390x/tcg/insn-data.h.inc | 2 +- target/s390x/tcg/translate.c | 19 +++++++++++++++++-- 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/target/s390x/tcg/insn-data.h.inc b/target/s390x/tcg/insn-data.= h.inc index 0bfd88d3c3..2f07f39d9c 100644 --- a/target/s390x/tcg/insn-data.h.inc +++ b/target/s390x/tcg/insn-data.h.inc @@ -442,7 +442,7 @@ D(0xebe8, LAAG, RSY_a, ILA, r3, a2, new, in2_r1, laa, adds64, MO_TE= UQ) /* LOAD AND ADD LOGICAL */ D(0xebfa, LAAL, RSY_a, ILA, r3_32u, a2, new, in2_r1_32, laa, addu32= , MO_TEUL) - D(0xebea, LAALG, RSY_a, ILA, r3, a2, new, in2_r1, laa, addu64, MO_TE= UQ) + D(0xebea, LAALG, RSY_a, ILA, r3, a2, new, in2_r1, laa_addu64, addu64= , MO_TEUQ) /* LOAD AND AND */ D(0xebf4, LAN, RSY_a, ILA, r3_32s, a2, new, in2_r1_32, lan, nz32, = MO_TESL) D(0xebe4, LANG, RSY_a, ILA, r3, a2, new, in2_r1, lan, nz64, MO_TEUQ) diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index a0d6a2a35d..62ab2be8b1 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -2677,17 +2677,32 @@ static DisasJumpType op_kxb(DisasContext *s, DisasO= ps *o) return DISAS_NEXT; } =20 -static DisasJumpType op_laa(DisasContext *s, DisasOps *o) +static DisasJumpType help_laa(DisasContext *s, DisasOps *o, bool addu64) { /* The real output is indeed the original value in memory; recompute the addition for the computation of CC. */ tcg_gen_atomic_fetch_add_i64(o->in2, o->in2, o->in1, get_mem_index(s), s->insn->data | MO_ALIGN); /* However, we need to recompute the addition for setting CC. */ - tcg_gen_add_i64(o->out, o->in1, o->in2); + if (addu64) { + tcg_gen_movi_i64(cc_src, 0); + tcg_gen_add2_i64(o->out, cc_src, o->in1, cc_src, o->in2, cc_src); + } else { + tcg_gen_add_i64(o->out, o->in1, o->in2); + } return DISAS_NEXT; } =20 +static DisasJumpType op_laa(DisasContext *s, DisasOps *o) +{ + return help_laa(s, o, false); +} + +static DisasJumpType op_laa_addu64(DisasContext *s, DisasOps *o) +{ + return help_laa(s, o, true); +} + static DisasJumpType op_lan(DisasContext *s, DisasOps *o) { /* The real output is indeed the original value in memory; --=20 2.41.0