93 lines
2.7 KiB
Rust
93 lines
2.7 KiB
Rust
//! Make sure that cross-language LTO works on riscv targets, which requires extra `target-abi`
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//! metadata to be emitted.
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//@ needs-force-clang-based-tests
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//@ needs-llvm-components: riscv
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// ignore-tidy-linelength
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use object::elf;
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use object::read::elf as readelf;
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use run_make_support::{bin_name, clang, object, rfs, rustc};
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fn check_target<H: readelf::FileHeader<Endian = object::Endianness>>(
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target: &str,
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clang_target: &str,
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carch: &str,
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is_double_float: bool,
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) {
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eprintln!("Checking target {target}");
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// Rust part
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rustc()
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.input("riscv-xlto.rs")
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.crate_type("rlib")
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.target(target)
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.panic("abort")
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.linker_plugin_lto("on")
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.run();
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// C part
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clang()
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.target(clang_target)
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.arch(carch)
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.lto("thin")
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.use_ld("lld")
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.no_stdlib()
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.out_exe("riscv-xlto")
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.input("cstart.c")
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.input("libriscv_xlto.rlib")
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.run();
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// Check that the built binary has correct float abi
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let executable = bin_name("riscv-xlto");
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let data = rfs::read(&executable);
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let header = <H>::parse(&*data).unwrap();
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let endian = match header.e_ident().data {
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elf::ELFDATA2LSB => object::Endianness::Little,
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elf::ELFDATA2MSB => object::Endianness::Big,
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x => unreachable!("invalid e_ident data: {:#010b}", x),
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};
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// Check `(e_flags & EF_RISCV_FLOAT_ABI) == EF_RISCV_FLOAT_ABI_DOUBLE`.
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//
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// See
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// <https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc#elf-object-files>.
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if is_double_float {
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assert_eq!(
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header.e_flags(endian) & elf::EF_RISCV_FLOAT_ABI,
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elf::EF_RISCV_FLOAT_ABI_DOUBLE,
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"expected {target} to use double ABI, but it did not"
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);
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} else {
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assert_ne!(
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header.e_flags(endian) & elf::EF_RISCV_FLOAT_ABI,
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elf::EF_RISCV_FLOAT_ABI_DOUBLE,
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"did not expected {target} to use double ABI"
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);
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}
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}
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fn main() {
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check_target::<elf::FileHeader64<object::Endianness>>(
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"riscv64gc-unknown-linux-gnu",
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"riscv64-linux-gnu",
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"rv64gc",
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true,
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);
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check_target::<elf::FileHeader64<object::Endianness>>(
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"riscv64imac-unknown-none-elf",
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"riscv64-unknown-elf",
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"rv64imac",
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false,
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);
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check_target::<elf::FileHeader32<object::Endianness>>(
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"riscv32imac-unknown-none-elf",
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"riscv32-unknown-elf",
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"rv32imac",
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false,
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);
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check_target::<elf::FileHeader32<object::Endianness>>(
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"riscv32gc-unknown-linux-gnu",
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"riscv32-linux-gnu",
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"rv32gc",
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true,
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);
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}
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