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opensecura / 3p / lowrisc / opentitan / c76ff7c612e3facc4165e203cc1a957deb05f942 / . / sw / device / lib / base
tree: b2a5f58bf82d2a4c7ebbca877dfc6bb9c884a4c8 [path history] [tgz]
  1. freestanding/
  2. internal/
  3. abs_mmio.c
  4. abs_mmio.h
  5. adv_macros.h
  6. bitfield.c
  7. bitfield.h
  8. BUILD
  9. csr.h
  10. csr_registers.h
  11. global_mock.h
  12. hardened.c
  13. hardened.h
  14. hardened_memory.c
  15. hardened_memory.h
  16. hardened_memory_unittest.cc
  17. hardened_unittest.cc
  18. macros.h
  19. math.c
  20. math.h
  21. math_builtins.c
  22. math_builtins_unittest.cc
  23. math_unittest.cc
  24. memory.c
  25. memory.h
  26. memory_perftest.c
  27. memory_unittest.cc
  28. mmio.c
  29. mmio.h
  30. mock_abs_mmio.cc
  31. mock_abs_mmio.h
  32. mock_mmio.cc
  33. mock_mmio.h
  34. mock_mmio_test.cc
  35. mock_mmio_test_utils.h
  36. multibits.h
  37. multibits_asm.h
  38. random_order.c
  39. random_order.h
  40. README.md
  41. status.c
  42. status.h
  43. status_unittest.cc
  44. stdasm.h
sw/device/lib/base/README.md

libbase: The OpenTitan Standard Library

This subtree provides headers and libraries known collectively as libbase, which serve as OpenTitan's ersatz libc.

Differences from a libc

libbase is not a libc, even though it implements a number of libc symbols, and should not be used as such. libbase is, rather, a place for base libraries which may need to make use of more compiler/platform intrinsics than average, in order to present a safe, stable, and uesful interface that other parts of OpenTitan can rely on.

In general, a library exposing general utilities for working close to the hardware should live in this subtree: for example, a library providing memcpy and related symbols. A library for talking to a particular peripheral, like a UART port, is a non-example.