bjoernager/rust
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add rustc_codegen_ssa support for csky and correct some code

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This commit is contained in:
Dirreke 2023-07-14 19:16:38 +08:00 • committed by dirreke
parent 8ed7aa16bd
commit 8c51e28bd5
7 changed files with 26 additions and 3 deletions
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8
compiler/rustc_codegen_ssa/src/back/metadata.rs
View file

@ -209,6 +209,7 @@ pub(crate) fn create_object_file(sess: &Session) -> Option<write::Object<'static
"hexagon" => Architecture::Hexagon,
"bpf" => Architecture::Bpf,
"loongarch64" => Architecture::LoongArch64,
"csky" => Architecture::Csky,
// Unsupported architecture.
_ => return None,
};
@ -307,6 +308,13 @@ pub(crate) fn create_object_file(sess: &Session) -> Option<write::Object<'static
// the appropriate EF_AVR_ARCH flag.
ef_avr_arch(&sess.target.options.cpu)
}
Architecture::Csky => {
let e_flags = match sess.target.options.abi.as_ref() {
"abiv2" => elf::EF_CSKY_ABIV2,
_ => elf::EF_CSKY_ABIV1,
};
e_flags
}
_ => 0,
};
// adapted from LLVM's `MCELFObjectTargetWriter::getOSABI`

13
compiler/rustc_codegen_ssa/src/target_features.rs
View file

@ -296,6 +296,16 @@ const WASM_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
const BPF_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[("alu32", Some(sym::bpf_target_feature))];
const CSKY_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
("hard-float", Some(sym::csky_target_feature)),
("hard-float-abi", Some(sym::csky_target_feature)),
("fpuv2_sf", Some(sym::csky_target_feature)),
("fpuv2_df", Some(sym::csky_target_feature)),
("fpuv3_sf", Some(sym::csky_target_feature)),
("fpuv3_df", Some(sym::csky_target_feature)),
("vdspv2", Some(sym::csky_target_feature)),
("dspv2", Some(sym::csky_target_feature)),
];
/// When rustdoc is running, provide a list of all known features so that all their respective
/// primitives may be documented.
///
@ -311,6 +321,7 @@ pub fn all_known_features() -> impl Iterator<Item = (&'static str, Option<Symbol
.chain(RISCV_ALLOWED_FEATURES.iter())
.chain(WASM_ALLOWED_FEATURES.iter())
.chain(BPF_ALLOWED_FEATURES.iter())
.chain(CSKY_ALLOWED_FEATURES)
.cloned()
}
@ -325,6 +336,7 @@ pub fn supported_target_features(sess: &Session) -> &'static [(&'static str, Opt
"riscv32" | "riscv64" => RISCV_ALLOWED_FEATURES,
"wasm32" | "wasm64" => WASM_ALLOWED_FEATURES,
"bpf" => BPF_ALLOWED_FEATURES,
"csky" => CSKY_ALLOWED_FEATURES,
_ => &[],
}
}
@ -396,6 +408,7 @@ pub fn from_target_feature(
Some(sym::ermsb_target_feature) => rust_features.ermsb_target_feature,
Some(sym::bpf_target_feature) => rust_features.bpf_target_feature,
Some(sym::aarch64_ver_target_feature) => rust_features.aarch64_ver_target_feature,
Some(sym::csky_target_feature) => rust_features.csky_target_feature,
Some(name) => bug!("unknown target feature gate {}", name),
None => true,
};