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Add Cosmopolitan Libc Platform (#2598)

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This PR adds the Cosmopolitan Libc platform enabling compatibility with multiple
x86_64 operating systems with the same binary. The platform is similar to the
Linux platform, but for now only x86_64 with interpreter modes are supported.

The only major change to the core is `posix.c/convert_errno()` was rewritten to use
a switch statement. With Cosmopolitan errno values depend on the currently
running operating system, and so they are non-constant and cannot be used in array
designators. However, the `cosmocc` compiler allows non-constant case labels in
switch statements, enabling the new version.

And updated wamr-test-suites script to add `-j <platform>` option. The spec tests
can be ran via `CC=cosmocc ./test_wamr.sh -j cosmopolitan -t classic-interp`
or `CC=cosmocc ./test_wamr.sh -j cosmopolitan -t fast-interp`.
This commit is contained in:
Gavin Hayes
2023-10-04 09:55:37 -04:00
committed by GitHub
parent 8987432f36
commit d8ee771e28
11 changed files with 512 additions and 94 deletions
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10
product-mini/platforms/cosmopolitan/build_cosmocc.sh Executable file
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#!/bin/sh
# Copyright (C) 2023 Dylibso. All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
export CC=cosmocc
export CXX=cosmoc++
rm -rf build
mkdir build
cmake -DWAMR_BUILD_INTERP=1 -DWAMR_BUILD_FAST_INTERP=1 -B build
cmake --build build -j