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cpu-features.h 2.5 KB

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  1. /*
  2. * Copyright (C) 2010 The Android Open Source Project
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in
  12. * the documentation and/or other materials provided with the
  13. * distribution.
  14. *
  15. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  18. * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  19. * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  20. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21. * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  22. * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  23. * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24. * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  25. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26. * SUCH DAMAGE.
  27. */
  28. #ifndef CPU_FEATURES_H
  29. #define CPU_FEATURES_H
  30. #include <sys/cdefs.h>
  31. #include <stdint.h>
  32. __BEGIN_DECLS
  33. typedef enum {
  34. ANDROID_CPU_FAMILY_UNKNOWN = 0,
  35. ANDROID_CPU_FAMILY_ARM,
  36. ANDROID_CPU_FAMILY_X86,
  37. ANDROID_CPU_FAMILY_MAX /* do not remove */
  38. } AndroidCpuFamily;
  39. /* Return family of the device's CPU */
  40. __attribute__ ((visibility("default"))) extern AndroidCpuFamily android_getCpuFamily(void);
  41. enum {
  42. ANDROID_CPU_ARM_FEATURE_ARMv7 = (1 << 0),
  43. ANDROID_CPU_ARM_FEATURE_VFPv3 = (1 << 1),
  44. ANDROID_CPU_ARM_FEATURE_NEON = (1 << 2),
  45. ANDROID_CPU_ARM_FEATURE_LDREX_STREX = (1 << 3),
  46. ANDROID_CPU_ARM_FEATURE_ARMv6=ANDROID_CPU_ARM_FEATURE_LDREX_STREX,
  47. ANDROID_CPU_ARM_FEATURE_VFP = (1 << 4),
  48. };
  49. enum {
  50. ANDROID_CPU_X86_FEATURE_SSSE3 = (1 << 0),
  51. ANDROID_CPU_X86_FEATURE_POPCNT = (1 << 1),
  52. ANDROID_CPU_X86_FEATURE_MOVBE = (1 << 2),
  53. };
  54. __attribute__ ((visibility("default"))) extern uint64_t android_getCpuFeatures(void);
  55. /* Return the number of CPU cores detected on this device. */
  56. __attribute__ ((visibility("default"))) extern int android_getCpuCount(void);
  57. __END_DECLS
  58. #endif /* CPU_FEATURES_H */