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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=bcain@quicinc.com; helo=mx0b-0031df01.pphosted.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, 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @quicinc.com) X-ZM-MESSAGEID: 1723088667538116600 From: Matheus Tavares Bernardino The implementation for these instructions handles -0 as an invalid float point value, whereas the Hexagon hardware considers it the same as +0 (which is valid). Let's fix that and add a regression test. Signed-off-by: Matheus Tavares Bernardino Reviewed-by: Brian Cain Reviewed-by: Taylor Simpson Signed-off-by: Brian Cain --- target/hexagon/op_helper.c | 18 +++++++++--------- tests/tcg/hexagon/usr.c | 12 +++++++++++- 2 files changed, 20 insertions(+), 10 deletions(-) diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c index ae5a605513..90e7aaa097 100644 --- a/target/hexagon/op_helper.c +++ b/target/hexagon/op_helper.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Res= erved. + * Copyright(c) 2019-2024 Qualcomm Innovation Center, Inc. All Rights Res= erved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -683,7 +683,7 @@ uint32_t HELPER(conv_sf2uw)(CPUHexagonState *env, float= 32 RsV) uint32_t RdV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float32_is_neg(RsV) && !float32_is_any_nan(RsV)) { + if (float32_is_neg(RsV) && !float32_is_any_nan(RsV) && !float32_is_zer= o(RsV)) { float_raise(float_flag_invalid, &env->fp_status); RdV =3D 0; } else { @@ -713,7 +713,7 @@ uint64_t HELPER(conv_sf2ud)(CPUHexagonState *env, float= 32 RsV) uint64_t RddV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float32_is_neg(RsV) && !float32_is_any_nan(RsV)) { + if (float32_is_neg(RsV) && !float32_is_any_nan(RsV) && !float32_is_zer= o(RsV)) { float_raise(float_flag_invalid, &env->fp_status); RddV =3D 0; } else { @@ -743,7 +743,7 @@ uint32_t HELPER(conv_df2uw)(CPUHexagonState *env, float= 64 RssV) uint32_t RdV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float64_is_neg(RssV) && !float64_is_any_nan(RssV)) { + if (float64_is_neg(RssV) && !float64_is_any_nan(RssV) && !float64_is_z= ero(RssV)) { float_raise(float_flag_invalid, &env->fp_status); RdV =3D 0; } else { @@ -773,7 +773,7 @@ uint64_t HELPER(conv_df2ud)(CPUHexagonState *env, float= 64 RssV) uint64_t RddV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float64_is_neg(RssV) && !float64_is_any_nan(RssV)) { + if (float64_is_neg(RssV) && !float64_is_any_nan(RssV) && !float64_is_z= ero(RssV)) { float_raise(float_flag_invalid, &env->fp_status); RddV =3D 0; } else { @@ -803,7 +803,7 @@ uint32_t HELPER(conv_sf2uw_chop)(CPUHexagonState *env, = float32 RsV) uint32_t RdV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float32_is_neg(RsV) && !float32_is_any_nan(RsV)) { + if (float32_is_neg(RsV) && !float32_is_any_nan(RsV) && !float32_is_zer= o(RsV)) { float_raise(float_flag_invalid, &env->fp_status); RdV =3D 0; } else { @@ -833,7 +833,7 @@ uint64_t HELPER(conv_sf2ud_chop)(CPUHexagonState *env, = float32 RsV) uint64_t RddV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float32_is_neg(RsV) && !float32_is_any_nan(RsV)) { + if (float32_is_neg(RsV) && !float32_is_any_nan(RsV) && !float32_is_zer= o(RsV)) { float_raise(float_flag_invalid, &env->fp_status); RddV =3D 0; } else { @@ -863,7 +863,7 @@ uint32_t HELPER(conv_df2uw_chop)(CPUHexagonState *env, = float64 RssV) uint32_t RdV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float64_is_neg(RssV) && !float64_is_any_nan(RssV)) { + if (float64_is_neg(RssV) && !float64_is_any_nan(RssV) && !float64_is_z= ero(RssV)) { float_raise(float_flag_invalid, &env->fp_status); RdV =3D 0; } else { @@ -893,7 +893,7 @@ uint64_t HELPER(conv_df2ud_chop)(CPUHexagonState *env, = float64 RssV) uint64_t RddV; arch_fpop_start(env); /* Hexagon checks the sign before rounding */ - if (float64_is_neg(RssV) && !float64_is_any_nan(RssV)) { + if (float64_is_neg(RssV) && !float64_is_any_nan(RssV) && !float64_is_z= ero(RssV)) { float_raise(float_flag_invalid, &env->fp_status); RddV =3D 0; } else { diff --git a/tests/tcg/hexagon/usr.c b/tests/tcg/hexagon/usr.c index 92bc86a213..f0b23d312b 100644 --- a/tests/tcg/hexagon/usr.c +++ b/tests/tcg/hexagon/usr.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights Res= erved. + * Copyright(c) 2022-2024 Qualcomm Innovation Center, Inc. All Rights Res= erved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -1007,6 +1007,11 @@ int main() TEST_P_OP_R(conv_sf2d_chop, SF_QNaN, 0xffffffffffffffffULL, USR_FP= INVF); TEST_P_OP_R(conv_sf2d_chop, SF_SNaN, 0xffffffffffffffffULL, USR_FP= INVF); =20 + TEST_R_OP_R(conv_sf2uw, SF_zero_neg, 0, USR_CLEAR); + TEST_R_OP_R(conv_sf2uw_chop, SF_zero_neg, 0, USR_CLEAR); + TEST_P_OP_R(conv_sf2ud, SF_zero_neg, 0, USR_CLEAR); + TEST_P_OP_R(conv_sf2ud_chop, SF_zero_neg, 0, USR_CLEAR); + TEST_R_OP_P(conv_df2sf, DF_QNaN, SF_HEX_NaN, USR_CL= EAR); TEST_R_OP_P(conv_df2sf, DF_SNaN, SF_HEX_NaN, USR_FP= INVF); TEST_R_OP_P(conv_df2uw, DF_QNaN, 0xffffffff, USR_FP= INVF); @@ -1020,6 +1025,11 @@ int main() TEST_R_OP_P(conv_df2uw_chop, DF_QNaN, 0xffffffff, USR_FP= INVF); TEST_R_OP_P(conv_df2uw_chop, DF_SNaN, 0xffffffff, USR_FP= INVF); =20 + TEST_R_OP_P(conv_df2uw, DF_zero_neg, 0, USR_CLEAR); + TEST_R_OP_P(conv_df2uw_chop, DF_zero_neg, 0, USR_CLEAR); + TEST_P_OP_P(conv_df2ud, DF_zero_neg, 0, USR_CLEAR); + TEST_P_OP_P(conv_df2ud_chop, DF_zero_neg, 0, USR_CLEAR); + /* Test for typo in HELPER(conv_df2uw_chop) */ TEST_R_OP_P(conv_df2uw_chop, 0xffffff7f00000001ULL, 0xffffffff, USR_FP= INVF); =20 --=20 2.34.1 From nobody Sun Nov 24 11:45:03 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=quicinc.com ARC-Seal: i=1; a=rsa-sha256; t=1723088666; cv=none; d=zohomail.com; s=zohoarc; b=WH0AT3KRD2bQQtoLtHHI3o/a1/j5djpqhBnXw9t7TAMuNPFJchSnMIuigE8VGMDrqdwvWSVwDFP50CDoqau1brHt798v3R3lPoeY0+wms5PX0HaLF+6r2SZsJj3KZFHue3YXZM2CtJUsanV4erPisa0fgSUX/aoK+vDs5DWPzBM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1723088666; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=bcain@quicinc.com; helo=mx0b-0031df01.pphosted.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, 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @quicinc.com) X-ZM-MESSAGEID: 1723088667504116600 From: Taylor Simpson hexagon-core.xml only exposes register p3_0 which is an alias that aggregates the predicate registers. It is more convenient for users to interact directly with the predicate registers. Tested with lldb downloaded from this location https://github.com/llvm/llvm-project/releases/download/llvmorg-18.1.4/clang= +llvm-18.1.4-x86_64-linux-gnu-ubuntu-18.04.tar.xz BEFORE: (lldb) reg read p3_0 p3_0 =3D 0x00000000 (lldb) reg read p0 error: Invalid register name 'p0'. (lldb) reg write p1 0xf error: Register not found for 'p1'. AFTER: (lldb) reg read p3_0 p3_0 =3D 0x00000000 (lldb) reg read p0 p0 =3D 0x00 (lldb) reg read -s 1 Predicate Registers: p0 =3D 0x00 p1 =3D 0x00 p2 =3D 0x00 p3 =3D 0x00 (lldb) reg write p1 0xf (lldb) reg read p3_0 p3_0 =3D 0x00000f00 (lldb) reg write p3_0 0xff00ff00 (lldb) reg read -s 1 Predicate Registers: p0 =3D 0x00 p1 =3D 0xff p2 =3D 0x00 p3 =3D 0xff Signed-off-by: Taylor Simpson Reviewed-by: Brian Cain Reviewed-by: Matheus Tavares Bernardino Message-Id: <20240613182209.140082-1-ltaylorsimpson@gmail.com> Signed-off-by: Brian Cain --- gdb-xml/hexagon-core.xml | 6 +++++- target/hexagon/gdbstub.c | 19 ++++++++++++++++++- 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/gdb-xml/hexagon-core.xml b/gdb-xml/hexagon-core.xml index e181163cff..b94378112a 100644 --- a/gdb-xml/hexagon-core.xml +++ b/gdb-xml/hexagon-core.xml @@ -1,6 +1,6 @@