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add mips/mips64 compiler-rt fallbacks so that libgcc is not required

This adds compiler-rt fallbacks for mips and mips64 arches.

Solves linking issues like https://github.com/rust-lang/rust/issues/57820.

Signed-off-by: Yuxiang Zhu <vfreex@gmail.com>
master
Yuxiang Zhu 2 years ago
parent
commit
3f012a835e
  1. 4
      .github/workflows/main.yml
  2. 19
      build.rs

4
.github/workflows/main.yml

@ -111,8 +111,8 @@ jobs:
- run: rustup target add ${{ matrix.target }}
- name: Download compiler-rt reference sources
run: |
curl -L -o code.tar.gz https://github.com/rust-lang/llvm-project/archive/rustc/8.0-2019-03-18.tar.gz
tar xzf code.tar.gz --strip-components 1 llvm-project-rustc-8.0-2019-03-18/compiler-rt
curl -L -o code.tar.gz https://github.com/rust-lang/llvm-project/archive/rustc/10.0-2020-02-05.tar.gz
tar xzf code.tar.gz --strip-components 1 llvm-project-rustc-10.0-2020-02-05/compiler-rt
echo "##[set-env name=RUST_COMPILER_RT_ROOT]./compiler-rt"
shell: bash

19
build.rs

@ -396,6 +396,25 @@ mod c {
}
}
if target_arch == "mips" {
sources.extend(&[("__bswapsi2", "bswapsi2.c")]);
}
if target_arch == "mips64" {
sources.extend(&[
("__extenddftf2", "extenddftf2.c"),
("__netf2", "comparetf2.c"),
("__addtf3", "addtf3.c"),
("__multf3", "multf3.c"),
("__subtf3", "subtf3.c"),
("__fixtfsi", "fixtfsi.c"),
("__floatsitf", "floatsitf.c"),
("__fixunstfsi", "fixunstfsi.c"),
("__floatunsitf", "floatunsitf.c"),
("__fe_getround", "fp_mode.c"),
]);
}
// Remove the assembly implementations that won't compile for the target
if llvm_target[0] == "thumbv6m" || llvm_target[0] == "thumbv8m.base" {
let mut to_remove = Vec::new();

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