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new_dynarec: autodetect ARM integer divide feature at runtime
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265 additions
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- +2 −0 jni/Android.mk
- +150 −0 jni/mupen64plus-core/src/r4300/new_dynarec/arm_cpu_features.cpp
- +54 −0 jni/mupen64plus-core/src/r4300/new_dynarec/arm_cpu_features.h
- +58 −46 jni/mupen64plus-core/src/r4300/new_dynarec/assem_arm.c
- +0 −1 jni/mupen64plus-core/src/r4300/new_dynarec/assem_arm.h
- +1 −0 jni/mupen64plus-core/src/r4300/new_dynarec/new_dynarec.c
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| /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * | ||
| * Mupen64plus - arm_cpu_features.cpp * | ||
| * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * | ||
| * Copyright (C) 2015 Gilles Siberlin * | ||
| * * | ||
| * 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 * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| * This program is distributed in the hope that it will be useful, * | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
| * GNU General Public License for more details. * | ||
| * * | ||
| * You should have received a copy of the GNU General Public License * | ||
| * along with this program; if not, write to the * | ||
| * Free Software Foundation, Inc., * | ||
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * | ||
| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | ||
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| #include <fstream> | ||
| #include <sstream> | ||
| #include <string> | ||
| #include "arm_cpu_features.h" | ||
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| extern "C" { | ||
| #include "api/callbacks.h" | ||
| } | ||
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| arm_cpu_features_t arm_cpu_features; | ||
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| const char procfile[] = "/proc/cpuinfo"; | ||
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| static unsigned char check_arm_cpu_feature(const std::string& feature) | ||
| { | ||
| const std::string marker = "Features\t: "; | ||
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| std::string line; | ||
| std::ifstream file(procfile); | ||
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| if (!file) | ||
| return 0; | ||
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| while (std::getline(file, line)) | ||
| { | ||
| if (line.find(marker) != std::string::npos) | ||
| { | ||
| std::stringstream line_stream(line); | ||
| std::string token; | ||
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| while (std::getline(line_stream, token, ' ')) | ||
| { | ||
| if (token == feature) | ||
| return 1; | ||
| } | ||
| } | ||
| } | ||
| return 0; | ||
| } | ||
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| static unsigned char get_arm_cpu_implementer(void) | ||
| { | ||
| const std::string marker = "CPU implementer\t: "; | ||
| unsigned char implementer = 0; | ||
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| std::string line; | ||
| std::ifstream file(procfile); | ||
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| if (!file) | ||
| return 0; | ||
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| while (std::getline(file, line)) | ||
| { | ||
| if (line.find(marker) != std::string::npos) | ||
| { | ||
| line = line.substr(marker.length()); | ||
| sscanf(line.c_str(), "0x%02hhx", &implementer); | ||
| break; | ||
| } | ||
| } | ||
| return implementer; | ||
| } | ||
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| static unsigned short get_arm_cpu_part(void) | ||
| { | ||
| const std::string marker = "CPU part\t: "; | ||
| unsigned short part = 0; | ||
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| std::string line; | ||
| std::ifstream file(procfile); | ||
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| if (!file) | ||
| return 0; | ||
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| while (std::getline(file, line)) | ||
| { | ||
| if (line.find(marker) != std::string::npos) | ||
| { | ||
| line = line.substr(marker.length()); | ||
| sscanf(line.c_str(), "0x%03hx", &part); | ||
| break; | ||
| } | ||
| } | ||
| return part; | ||
| } | ||
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| void detect_arm_cpu_features(void) | ||
| { | ||
| arm_cpu_features.SWP = check_arm_cpu_feature("swp"); | ||
| arm_cpu_features.Half = check_arm_cpu_feature("half"); | ||
| arm_cpu_features.Thumb = check_arm_cpu_feature("thumb"); | ||
| arm_cpu_features.FastMult = check_arm_cpu_feature("fastmult"); | ||
| arm_cpu_features.VFP = check_arm_cpu_feature("vfp"); | ||
| arm_cpu_features.EDSP = check_arm_cpu_feature("edsp"); | ||
| arm_cpu_features.ThumbEE = check_arm_cpu_feature("thumbee"); | ||
| arm_cpu_features.NEON = check_arm_cpu_feature("neon"); | ||
| arm_cpu_features.VFPv3 = check_arm_cpu_feature("vfpv3"); | ||
| arm_cpu_features.TLS = check_arm_cpu_feature("tls"); | ||
| arm_cpu_features.VFPv4 = check_arm_cpu_feature("vfpv4"); | ||
| arm_cpu_features.IDIVa = check_arm_cpu_feature("idiva"); | ||
| arm_cpu_features.IDIVt = check_arm_cpu_feature("idivt"); | ||
| // Qualcomm Krait supports IDIVa but it doesn't report it. Check for krait. | ||
| if (get_arm_cpu_implementer() == 0x51 && get_arm_cpu_part() == 0x6F) | ||
| arm_cpu_features.IDIVa = arm_cpu_features.IDIVt = 1; | ||
| } | ||
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| void print_arm_cpu_features(void) | ||
| { | ||
| std::string arm_cpu_features_string; | ||
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| arm_cpu_features_string="ARM CPU Features:"; | ||
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| if (arm_cpu_features.SWP) arm_cpu_features_string += " SWP"; | ||
| if (arm_cpu_features.Half) arm_cpu_features_string += ", Half"; | ||
| if (arm_cpu_features.Thumb) arm_cpu_features_string += ", Thumb"; | ||
| if (arm_cpu_features.FastMult) arm_cpu_features_string += ", FastMult"; | ||
| if (arm_cpu_features.VFP) arm_cpu_features_string += ", VFP"; | ||
| if (arm_cpu_features.EDSP) arm_cpu_features_string += ", EDSP"; | ||
| if (arm_cpu_features.ThumbEE) arm_cpu_features_string += ", ThumbEE"; | ||
| if (arm_cpu_features.NEON) arm_cpu_features_string += ", NEON"; | ||
| if (arm_cpu_features.VFPv3) arm_cpu_features_string += ", VFPv3"; | ||
| if (arm_cpu_features.TLS) arm_cpu_features_string += ", TLS"; | ||
| if (arm_cpu_features.VFPv4) arm_cpu_features_string += ", VFPv4"; | ||
| if (arm_cpu_features.IDIVa) arm_cpu_features_string += ", IDIVa"; | ||
| if (arm_cpu_features.IDIVt) arm_cpu_features_string += ", IDIVt"; | ||
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| DebugMessage(M64MSG_INFO, "%s", arm_cpu_features_string.c_str()); | ||
| } | ||
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| @@ -0,0 +1,54 @@ | ||
| /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * | ||
| * Mupen64plus - arm_cpu_features.h * | ||
| * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * | ||
| * Copyright (C) 2015 Gilles Siberlin * | ||
| * * | ||
| * 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 * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| * This program is distributed in the hope that it will be useful, * | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
| * GNU General Public License for more details. * | ||
| * * | ||
| * You should have received a copy of the GNU General Public License * | ||
| * along with this program; if not, write to the * | ||
| * Free Software Foundation, Inc., * | ||
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * | ||
| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | ||
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| #ifndef ARM_CPU_FEATURES_H | ||
| #define ARM_CPU_FEATURES_H | ||
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| typedef struct | ||
| { | ||
| unsigned char SWP; | ||
| unsigned char Half; | ||
| unsigned char Thumb; | ||
| unsigned char FastMult; | ||
| unsigned char VFP; | ||
| unsigned char EDSP; | ||
| unsigned char ThumbEE; | ||
| unsigned char NEON; | ||
| unsigned char VFPv3; | ||
| unsigned char TLS; | ||
| unsigned char VFPv4; | ||
| unsigned char IDIVa; | ||
| unsigned char IDIVt; | ||
| }arm_cpu_features_t; | ||
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
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| extern arm_cpu_features_t arm_cpu_features; | ||
| void detect_arm_cpu_features(void); | ||
| void print_arm_cpu_features(void); | ||
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| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
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| #endif /* ARM_CPU_FEATURES_H */ |