hyperlight-libc 0.16.0

This crate provides picolibc for Hyperlight guests. It builds the picolibc library and generates bindings to the libc types and functions.
Documentation
#
# SPDX-License-Identifier: BSD-3-Clause
#
# Copyright © 2019 Keith Packard
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above
#    copyright notice, this list of conditions and the following
#    disclaimer in the documentation and/or other materials provided
#    with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
# OF THE POSSIBILITY OF SUCH DAMAGE.
#
malloc_srcs_stdlib = [
  'calloc.c',
  'free.c',
  'getpagesize.c',
  'mallinfo.c',
  'malloc.c',
  'malloc-stats.c',
  'malloc-usable-size.c',
  'mallopt.c',
  'memalign.c',
  'posix-memalign.c',
  'pvalloc.c',
  'realloc.c',
  'valloc.c',
]

srcs_stdlib = [
    'a64l.c',
    'abort.c',
    'abs.c',
    'aligned_alloc.c',
    'arc4random.c',
    'arc4random_uniform.c',
    'assert.c',
    'assert_func.c',
    'assert_no_arg.c',
    'atexit.c',
    'atof.c',
    'atoff.c',
    'atoi.c',
    'atol.c',
    'atoll.c',
    'btowc.c',
    'cxa-atexit.c',
    'div.c',
    'drand48.c',
    'ejtouc.c',
    'environ.c',
    'eprintf.c',
    'erand48.c',
    'exit.c',
    'exitprocs.c',
    '_Exit.c',
    'getenv.c',
    'getenv_r.c',
    'getopt.c',
    'getsubopt.c',
    'imaxabs.c',
    'imaxdiv.c',
    'itoa.c',
    'jitouc.c',
    'jrand48.c',
    'l64a.c',
    'labs.c',
    'lcong48.c',
    'ldiv.c',
    'llabs.c',
    'lldiv.c',
    'lrand48.c',
    'mblen.c',
    'mbrlen.c',
    'mbrtowc.c',
    'mbsinit.c',
    'mbsnrtowcs.c',
    'mbsrtowcs.c',
    'mbstowcs.c',
    'mbtowc.c',
    'mbtowc_r.c',
    'mrand48.c',
    'nrand48.c',
    'onexit.c',
    'putenv.c',
    'rand48.c',
    'rand.c',
    'random.c',
    'rand_r.c',
    'reallocarray.c',
    'reallocf.c',
    'rpmatch.c',
    'sb_charsets.c',
    'seed48.c',
    'setenv.c',
    'sjtouc.c',
    'srand.c',
    'srand48.c',
    'srandom.c',
    'system.c',
    'uctoji.c',
    'uctoej.c',
    'uctosj.c',
    'utoa.c',
    'wcrtomb.c',
    'wcsnrtombs.c',
    'wcsrtombs.c',
    'wcstombs.c',
    'wctob.c',
    'wctomb.c',
    'wctomb_r.c',
    'set_constraint_handler_s.c',
    'ignore_handler_s.c',
]

if enable_malloc
  srcs_stdlib += malloc_srcs_stdlib
endif

srcs_stdlib_use = []
foreach file : srcs_stdlib
  s_file = fs.replace_suffix(file, '.S')
  if file in srcs_machine
    message('libc/stdlib/' + file + ': machine overrides generic')
  elif s_file in srcs_machine
    message('libc/stdlib/' + s_file + ': machine overrides generic')
  else
    srcs_stdlib_use += file
  endif
endforeach

src_stdlib = files(srcs_stdlib_use)