libc-bottom-half/README.md

   1 "WASI" the WebAssembly System Interface.
   2
   3 WASI libc is conceptually the lower half of a traditional libc implementation.
   4 It provides C interfaces to the low-level WASI syscalls.
   5
   6 This is largely based on [CloudABI], [cloudlibc], and [libpreopen], however we
   7 use just the low-level syscall wrappers rather than all of cloudlibc and
   8 libpreopen, and we have several customizations for use in a WebAssembly sysroot.
   9
  10 [CloudABI]: https://github.com/NuxiNL/cloudabi
  11 [cloudlibc]: https://github.com/NuxiNL/cloudlibc
  12 [libpreopen]: https://github.com/musec/libpreopen
  13
  14 The upstream repositories and versions used here are:
  15
  16 cloudlibc - https://github.com/NuxiNL/cloudlibc 8835639f27fc42d32096d59d294a0bbb857dc368
  17 libpreopen - https://github.com/musec/libpreopen 8265fc50b9db3730c250597bdd084f1e728f3e48
  18
  19 Whole files which are unused are omitted. Changes to upstream code are wrapped
  20 in preprocessor directives controlled by the macro `__wasilibc_unmodified_upstream`,
  21 except that CloudABI names have also been renamed to WASI names without annotations.
  22
  23 WASI libc currently depends on the basics and dlmalloc components of reference-sysroot.