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Mon, 6 Nov 2023 09:36:12 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 49A3D2004B; Mon, 6 Nov 2023 09:36:12 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B1BDF20040; Mon, 6 Nov 2023 09:36:11 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.47.192]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 6 Nov 2023 09:36:11 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand Cc: Thomas Huth , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Michael Tokarev , Ilya Leoshkevich , qemu-stable@nongnu.org Subject: [PATCH v2 1/5] target/s390x: Fix CLC corrupting cc_src Date: Mon, 6 Nov 2023 10:31:22 +0100 Message-ID: <20231106093605.1349201-2-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231106093605.1349201-1-iii@linux.ibm.com> References: <20231106093605.1349201-1-iii@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: zjYXyQp-JI9XpuMu0TLPvG8nDvJJuXGD X-Proofpoint-ORIG-GUID: RTer3tzea9MPdjtiT2b3Iw8r4KlYTvg1 X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-06_07,2023-11-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 adultscore=0 spamscore=0 phishscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 mlxscore=0 bulkscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311060082 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org CLC updates cc_src before accessing the second operand; if the latter is inaccessible, the former ends up containing a bogus value. Fix by reading cc_src into a temporary first. Fixes: 4f7403d52b1c ("target-s390: Convert CLC") Closes: https://gitlab.com/qemu-project/qemu/-/issues/1865 Cc: qemu-stable@nongnu.org Reviewed-by: Richard Henderson Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand --- target/s390x/tcg/translate.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index 4bae1509f50..a0d6a2a35dd 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -2007,6 +2007,7 @@ static DisasJumpType op_cksm(DisasContext *s, DisasOps *o) static DisasJumpType op_clc(DisasContext *s, DisasOps *o) { int l = get_field(s, l1); + TCGv_i64 src; TCGv_i32 vl; MemOp mop; @@ -2016,9 +2017,11 @@ static DisasJumpType op_clc(DisasContext *s, DisasOps *o) case 4: case 8: mop = ctz32(l + 1) | MO_TE; - tcg_gen_qemu_ld_tl(cc_src, o->addr1, get_mem_index(s), mop); + /* Do not update cc_src yet: loading cc_dst may cause an exception. */ + src = tcg_temp_new_i64(); + tcg_gen_qemu_ld_tl(src, o->addr1, get_mem_index(s), mop); tcg_gen_qemu_ld_tl(cc_dst, o->in2, get_mem_index(s), mop); - gen_op_update2_cc_i64(s, CC_OP_LTUGTU_64, cc_src, cc_dst); + gen_op_update2_cc_i64(s, CC_OP_LTUGTU_64, src, cc_dst); return DISAS_NEXT; default: vl = tcg_constant_i32(l); From patchwork Mon Nov 6 09:31:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Leoshkevich X-Patchwork-Id: 1859895 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=s1npyrAL; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SP5sr5TQbz1yQL for ; 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Mon, 6 Nov 2023 09:36:17 GMT Received: from smtprelay04.fra02v.mail.ibm.com ([9.218.2.228]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3u619n8a2k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 06 Nov 2023 09:36:17 +0000 Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 3A69aFGn45351616 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 6 Nov 2023 09:36:15 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 068322004B; Mon, 6 Nov 2023 09:36:15 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7CD2620040; Mon, 6 Nov 2023 09:36:14 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.47.192]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 6 Nov 2023 09:36:14 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand Cc: Thomas Huth , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Michael Tokarev , Ilya Leoshkevich Subject: [PATCH v2 2/5] tests/tcg/s390x: Test CLC with inaccessible second operand Date: Mon, 6 Nov 2023 10:31:23 +0100 Message-ID: <20231106093605.1349201-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231106093605.1349201-1-iii@linux.ibm.com> References: <20231106093605.1349201-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: qaae0zSGPSPK9hBkSwFwDYAyBIIXFG0a X-Proofpoint-ORIG-GUID: SUGKdnFD6_D5AZmib-_JHeEJf6dDY5m9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-06_07,2023-11-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 adultscore=0 spamscore=0 phishscore=0 mlxlogscore=836 malwarescore=0 suspectscore=0 mlxscore=0 bulkscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311060082 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich Reviewed-by: Richard Henderson --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/clc.c | 48 +++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 tests/tcg/s390x/clc.c diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index 826f0a18e43..ccd4f4e68de 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -41,6 +41,7 @@ TESTS+=larl TESTS+=mdeb TESTS+=cgebra TESTS+=clgebr +TESTS+=clc cdsg: CFLAGS+=-pthread cdsg: LDFLAGS+=-pthread diff --git a/tests/tcg/s390x/clc.c b/tests/tcg/s390x/clc.c new file mode 100644 index 00000000000..e14189bd75e --- /dev/null +++ b/tests/tcg/s390x/clc.c @@ -0,0 +1,48 @@ +/* + * Test the CLC instruction. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include +#include +#include +#include +#include + +static void handle_sigsegv(int sig, siginfo_t *info, void *ucontext) +{ + mcontext_t *mcontext = &((ucontext_t *)ucontext)->uc_mcontext; + if (mcontext->gregs[0] != 600) { + write(STDERR_FILENO, "bad r0\n", 7); + _exit(EXIT_FAILURE); + } + if (((mcontext->psw.mask >> 44) & 3) != 1) { + write(STDERR_FILENO, "bad cc\n", 7); + _exit(EXIT_FAILURE); + } + _exit(EXIT_SUCCESS); +} + +int main(void) +{ + register unsigned long r0 asm("r0"); + unsigned long mem = 42, rhs = 500; + struct sigaction act; + int err; + + memset(&act, 0, sizeof(act)); + act.sa_sigaction = handle_sigsegv; + act.sa_flags = SA_SIGINFO; + err = sigaction(SIGSEGV, &act, NULL); + assert(err == 0); + + r0 = 100; + asm("algr %[r0],%[rhs]\n" + "clc 0(8,%[mem]),0(0)\n" /* The 2nd operand will cause a SEGV. */ + : [r0] "+r" (r0) + : [mem] "r" (&mem) + , [rhs] "r" (rhs) + : "cc", "memory"); + + return EXIT_FAILURE; +} From patchwork Mon Nov 6 09:31:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Leoshkevich X-Patchwork-Id: 1859893 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Mon, 6 Nov 2023 09:36:17 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 68B192004E; Mon, 6 Nov 2023 09:36:17 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D313220040; Mon, 6 Nov 2023 09:36:16 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.47.192]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 6 Nov 2023 09:36:16 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand Cc: Thomas Huth , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Michael Tokarev , Ilya Leoshkevich , qemu-stable@nongnu.org Subject: [PATCH v2 3/5] target/s390x: Fix LAALG not updating cc_src Date: Mon, 6 Nov 2023 10:31:24 +0100 Message-ID: <20231106093605.1349201-4-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231106093605.1349201-1-iii@linux.ibm.com> References: <20231106093605.1349201-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: EeJzL-ESeHW39D2d7muVYdZJXzczWM1p X-Proofpoint-ORIG-GUID: bAceYrl1uJPZXp_5zl2zJCwMkjLUMuKR X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-06_07,2023-11-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 suspectscore=0 mlxscore=0 bulkscore=0 mlxlogscore=899 malwarescore=0 impostorscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311060081 Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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: Richard Henderson Reviewed-by: David Hildenbrand --- 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 0bfd88d3c3a..2f07f39d9cb 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_TEUQ) /* 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_TEUQ) + 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 a0d6a2a35dd..62ab2be8b12 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -2677,17 +2677,32 @@ static DisasJumpType op_kxb(DisasContext *s, DisasOps *o) return DISAS_NEXT; } -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; } +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; From patchwork Mon Nov 6 09:31:25 2023 Content-Type: text/plain; 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Mon, 6 Nov 2023 09:36:20 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3B03720040; Mon, 6 Nov 2023 09:36:20 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AFCA120043; Mon, 6 Nov 2023 09:36:19 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.47.192]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 6 Nov 2023 09:36:19 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand Cc: Thomas Huth , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Michael Tokarev , Ilya Leoshkevich Subject: [PATCH v2 4/5] tests/tcg/s390x: Test LAALG with negative cc_src Date: Mon, 6 Nov 2023 10:31:25 +0100 Message-ID: <20231106093605.1349201-5-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231106093605.1349201-1-iii@linux.ibm.com> References: <20231106093605.1349201-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: oD92kQaDeZTRbnmIFmzH5r2474Fn17VM X-Proofpoint-ORIG-GUID: nXgnMmgKEwrdo9KAE1_sPyMMjPgfr6vp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-06_07,2023-11-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 suspectscore=0 mlxscore=0 bulkscore=0 mlxlogscore=676 malwarescore=0 impostorscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311060081 Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich Reviewed-by: Richard Henderson --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/laalg.c | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) create mode 100644 tests/tcg/s390x/laalg.c diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index ccd4f4e68de..a476547b659 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -42,6 +42,7 @@ TESTS+=mdeb TESTS+=cgebra TESTS+=clgebr TESTS+=clc +TESTS+=laalg cdsg: CFLAGS+=-pthread cdsg: LDFLAGS+=-pthread diff --git a/tests/tcg/s390x/laalg.c b/tests/tcg/s390x/laalg.c new file mode 100644 index 00000000000..797d168bb16 --- /dev/null +++ b/tests/tcg/s390x/laalg.c @@ -0,0 +1,27 @@ +/* + * Test the LAALG instruction. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include +#include + +int main(void) +{ + unsigned long cc = 0, op1, op2 = 40, op3 = 2; + + asm("slgfi %[cc],1\n" /* Set cc_src = -1. */ + "laalg %[op1],%[op3],%[op2]\n" + "ipm %[cc]" + : [cc] "+r" (cc) + , [op1] "=r" (op1) + , [op2] "+T" (op2) + : [op3] "r" (op3) + : "cc"); + + assert(cc == 0xffffffff10ffffff); + assert(op1 == 40); + assert(op2 == 42); + + return EXIT_SUCCESS; +} From patchwork Mon Nov 6 09:31:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Leoshkevich X-Patchwork-Id: 1859897 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=FZ4ieTdi; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SP5wy6VJRz1yQK for ; 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envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add a test that tries different combinations of ADD LOGICAL WITH CARRY instructions. Signed-off-by: Ilya Leoshkevich --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/add-logical-with-carry.c | 156 +++++++++++++++++++++++ 2 files changed, 157 insertions(+) create mode 100644 tests/tcg/s390x/add-logical-with-carry.c diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index a476547b659..0e670f3f8b9 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -43,6 +43,7 @@ TESTS+=cgebra TESTS+=clgebr TESTS+=clc TESTS+=laalg +TESTS+=add-logical-with-carry cdsg: CFLAGS+=-pthread cdsg: LDFLAGS+=-pthread diff --git a/tests/tcg/s390x/add-logical-with-carry.c b/tests/tcg/s390x/add-logical-with-carry.c new file mode 100644 index 00000000000..d982f8a651b --- /dev/null +++ b/tests/tcg/s390x/add-logical-with-carry.c @@ -0,0 +1,156 @@ +/* + * Test ADD LOGICAL WITH CARRY instructions. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include +#include + +static const struct test { + const char *name; + unsigned long values[3]; + unsigned long exp_sum; + int exp_cc; +} tests[] = { + /* + * Each test starts with CC 0 and executes two chained ADD LOGICAL WITH + * CARRY instructions on three input values. The values must be compatible + * with both 32- and 64-bit test functions. + */ + + /* NAME VALUES EXP_SUM EXP_CC */ + { "cc0->cc0", {0, 0, 0}, 0, 0, }, + { "cc0->cc1", {0, 0, 42}, 42, 1, }, + /* cc0->cc2 is not possible */ + /* cc0->cc3 is not possible */ + /* cc1->cc0 is not possible */ + { "cc1->cc1", {-3, 1, 1}, -1, 1, }, + { "cc1->cc2", {-3, 1, 2}, 0, 2, }, + { "cc1->cc3", {-3, 1, -1}, -3, 3, }, + /* cc2->cc0 is not possible */ + { "cc2->cc1", {-1, 1, 1}, 2, 1, }, + { "cc2->cc2", {-1, 1, -1}, 0, 2, }, + /* cc2->cc3 is not possible */ + /* cc3->cc0 is not possible */ + { "cc3->cc1", {-1, 2, 1}, 3, 1, }, + { "cc3->cc2", {-1, 2, -2}, 0, 2, }, + { "cc3->cc3", {-1, 2, -1}, 1, 3, }, +}; + +/* Test ALCR (register variant) followed by ALC (memory variant). */ +static unsigned long test32rm(unsigned long a, unsigned long b, + unsigned long c, int *cc) +{ + unsigned int a32 = a, b32 = b, c32 = c; + + asm("xr %[cc],%[cc]\n" + "alcr %[a],%[b]\n" + "alc %[a],%[c]\n" + "ipm %[cc]" + : [a] "+&r" (a32), [cc] "+&r" (*cc) + : [b] "r" (b32), [c] "T" (c32) + : "cc"); + *cc >>= 28; + + return (int)a32; +} + +/* Test ALC (memory variant) followed by ALCR (register variant). */ +static unsigned long test32mr(unsigned long a, unsigned long b, + unsigned long c, int *cc) +{ + unsigned int a32 = a, b32 = b, c32 = c; + + asm("xr %[cc],%[cc]\n" + "alc %[a],%[b]\n" + "alcr %[c],%[a]\n" + "ipm %[cc]" + : [a] "+&r" (a32), [c] "+&r" (c32), [cc] "+&r" (*cc) + : [b] "T" (b32) + : "cc"); + *cc >>= 28; + + return (int)c32; +} + +/* Test ALCGR (register variant) followed by ALCG (memory variant). */ +static unsigned long test64rm(unsigned long a, unsigned long b, + unsigned long c, int *cc) +{ + asm("xr %[cc],%[cc]\n" + "alcgr %[a],%[b]\n" + "alcg %[a],%[c]\n" + "ipm %[cc]" + : [a] "+&r" (a), [cc] "+&r" (*cc) + : [b] "r" (b), [c] "T" (c) + : "cc"); + *cc >>= 28; + return a; +} + +/* Test ALCG (memory variant) followed by ALCGR (register variant). */ +static unsigned long test64mr(unsigned long a, unsigned long b, + unsigned long c, int *cc) +{ + asm("xr %[cc],%[cc]\n" + "alcg %[a],%[b]\n" + "alcgr %[c],%[a]\n" + "ipm %[cc]" + : [a] "+&r" (a), [c] "+&r" (c), [cc] "+&r" (*cc) + : [b] "T" (b) + : "cc"); + *cc >>= 28; + return c; +} + +static const struct test_func { + const char *name; + unsigned long (*ptr)(unsigned long, unsigned long, unsigned long, int *); +} test_funcs[] = { + { "test32rm", test32rm }, + { "test32mr", test32mr }, + { "test64rm", test64rm }, + { "test64mr", test64mr }, +}; + +static const struct test_perm { + const char *name; + size_t a_idx, b_idx, c_idx; +} test_perms[] = { + { "a, b, c", 0, 1, 2 }, + { "b, a, c", 1, 0, 2 }, +}; + +int main(void) +{ + unsigned long a, b, c, sum; + int result = EXIT_SUCCESS; + const struct test_func *f; + const struct test_perm *p; + size_t i, j, k; + const struct test *t; + int cc; + + for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + t = &tests[i]; + for (j = 0; j < sizeof(test_funcs) / sizeof(test_funcs[0]); j++) { + f = &test_funcs[j]; + for (k = 0; k < sizeof(test_perms) / sizeof(test_perms[0]); k++) { + p = &test_perms[k]; + a = t->values[p->a_idx]; + b = t->values[p->b_idx]; + c = t->values[p->c_idx]; + sum = f->ptr(a, b, c, &cc); + if (sum != t->exp_sum || cc != t->exp_cc) { + fprintf(stderr, + "[ FAILED ] %s %s(0x%lx, 0x%lx, 0x%lx) returned 0x%lx cc %d, expected 0x%lx cc %d\n", + t->name, f->name, a, b, c, sum, cc, + t->exp_sum, t->exp_cc); + result = EXIT_FAILURE; + } + } + } + } + + return result; +}