TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / external / cpu_features / src / cpuinfo_aarch64.c

diff --git a/src/type3_AndroidCloud/anbox-master/external/cpu_features/src/cpuinfo_aarch64.c b/src/type3_AndroidCloud/anbox-master/external/cpu_features/src/cpuinfo_aarch64.c
new file mode 100644 (file)
index 0000000..0d111ff
--- /dev/null
+++ b/src/type3_AndroidCloud/anbox-master/external/cpu_features/src/cpuinfo_aarch64.c
@@ -0,0 +1,141 @@
+// Copyright 2017 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "cpuinfo_aarch64.h"
+
+#include "internal/filesystem.h"
+#include "internal/hwcaps.h"
+#include "internal/linux_features_aggregator.h"
+#include "internal/stack_line_reader.h"
+#include "internal/string_view.h"
+
+#include <ctype.h>
+
+DECLARE_SETTER(Aarch64Features, fp)
+DECLARE_SETTER(Aarch64Features, asimd)
+DECLARE_SETTER(Aarch64Features, aes)
+DECLARE_SETTER(Aarch64Features, pmull)
+DECLARE_SETTER(Aarch64Features, sha1)
+DECLARE_SETTER(Aarch64Features, sha2)
+DECLARE_SETTER(Aarch64Features, crc32)
+
+static const CapabilityConfig kConfigs[] = {
+    {{AARCH64_HWCAP_FP, 0}, "fp", &set_fp},           //
+    {{AARCH64_HWCAP_ASIMD, 0}, "asimd", &set_asimd},  //
+    {{AARCH64_HWCAP_AES, 0}, "aes", &set_aes},        //
+    {{AARCH64_HWCAP_PMULL, 0}, "pmull", &set_pmull},  //
+    {{AARCH64_HWCAP_SHA1, 0}, "sha1", &set_sha1},     //
+    {{AARCH64_HWCAP_SHA2, 0}, "sha2", &set_sha2},     //
+    {{AARCH64_HWCAP_CRC32, 0}, "crc32", &set_crc32},  //
+};
+
+static const size_t kConfigsSize = sizeof(kConfigs) / sizeof(CapabilityConfig);
+
+static bool HandleAarch64Line(const LineResult result,
+                              Aarch64Info* const info) {
+  StringView line = result.line;
+  StringView key, value;
+  if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
+    if (CpuFeatures_StringView_IsEquals(key, str("Features"))) {
+      CpuFeatures_SetFromFlags(kConfigsSize, kConfigs, value, &info->features);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU implementer"))) {
+      info->implementer = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU variant"))) {
+      info->variant = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU part"))) {
+      info->part = CpuFeatures_StringView_ParsePositiveNumber(value);
+    } else if (CpuFeatures_StringView_IsEquals(key, str("CPU revision"))) {
+      info->revision = CpuFeatures_StringView_ParsePositiveNumber(value);
+    }
+  }
+  return !result.eof;
+}
+
+static void FillProcCpuInfoData(Aarch64Info* const info) {
+  const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
+  if (fd >= 0) {
+    StackLineReader reader;
+    StackLineReader_Initialize(&reader, fd);
+    for (;;) {
+      if (!HandleAarch64Line(StackLineReader_NextLine(&reader), info)) {
+        break;
+      }
+    }
+    CpuFeatures_CloseFile(fd);
+  }
+}
+
+static const Aarch64Info kEmptyAarch64Info;
+
+Aarch64Info GetAarch64Info(void) {
+  // capabilities are fetched from both getauxval and /proc/cpuinfo so we can
+  // have some information if the executable is sandboxed (aka no access to
+  // /proc/cpuinfo).
+  Aarch64Info info = kEmptyAarch64Info;
+
+  FillProcCpuInfoData(&info);
+  CpuFeatures_OverrideFromHwCaps(kConfigsSize, kConfigs,
+                                 CpuFeatures_GetHardwareCapabilities(),
+                                 &info.features);
+
+  return info;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Introspection functions
+
+int GetAarch64FeaturesEnumValue(const Aarch64Features* features,
+                                Aarch64FeaturesEnum value) {
+  switch (value) {
+    case AARCH64_FP:
+      return features->fp;
+    case AARCH64_ASIMD:
+      return features->asimd;
+    case AARCH64_AES:
+      return features->aes;
+    case AARCH64_PMULL:
+      return features->pmull;
+    case AARCH64_SHA1:
+      return features->sha1;
+    case AARCH64_SHA2:
+      return features->sha2;
+    case AARCH64_CRC32:
+      return features->crc32;
+    case AARCH64_LAST_:
+      break;
+  }
+  return false;
+}
+
+const char* GetAarch64FeaturesEnumName(Aarch64FeaturesEnum value) {
+  switch (value) {
+    case AARCH64_FP:
+      return "fp";
+    case AARCH64_ASIMD:
+      return "asimd";
+    case AARCH64_AES:
+      return "aes";
+    case AARCH64_PMULL:
+      return "pmull";
+    case AARCH64_SHA1:
+      return "sha1";
+    case AARCH64_SHA2:
+      return "sha2";
+    case AARCH64_CRC32:
+      return "crc32";
+    case AARCH64_LAST_:
+      break;
+  }
+  return "unknown feature";
+}