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STD support for the ESP-IDF framework

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ivmarkov 2021-07-29 20:18:22 +03:00 • committed by ivmarkov
parent ae90dcf020
commit 459eaa6bae
29 changed files with 580 additions and 46 deletions
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1
compiler/rustc_target/src/spec/mod.rs
View file

@ -903,6 +903,7 @@ supported_targets! {
("riscv32i-unknown-none-elf", riscv32i_unknown_none_elf),
("riscv32imc-unknown-none-elf", riscv32imc_unknown_none_elf),
("riscv32imc-esp-espidf", riscv32imc_esp_espidf),
("riscv32imac-unknown-none-elf", riscv32imac_unknown_none_elf),
("riscv32gc-unknown-linux-gnu", riscv32gc_unknown_linux_gnu),
("riscv32gc-unknown-linux-musl", riscv32gc_unknown_linux_musl),

37
compiler/rustc_target/src/spec/riscv32imc_esp_espidf.rs Normal file
View file

@ -0,0 +1,37 @@
use crate::spec::{LinkerFlavor, PanicStrategy, RelocModel};
use crate::spec::{Target, TargetOptions};
pub fn target() -> Target {
Target {
data_layout: "e-m:e-p:32:32-i64:64-n32-S128".to_string(),
llvm_target: "riscv32".to_string(),
pointer_width: 32,
arch: "riscv32".to_string(),
options: TargetOptions {
families: vec!["unix".to_string()],
os: "espidf".to_string(),
env: "newlib".to_string(),
vendor: "espressif".to_string(),
linker_flavor: LinkerFlavor::Gcc,
linker: Some("riscv32-esp-elf-gcc".to_string()),
cpu: "generic-rv32".to_string(),
// While the RiscV32IMC architecture does not natively support atomics, ESP-IDF does support
// the __atomic* and __sync* GCC builtins, so setting `max_atomic_width` to `Some(32)`
// and `atomic_cas` to `true` will cause the compiler to emit libcalls to these builtins.
//
// Support for atomics is necessary for the Rust STD library, which is supported by the ESP-IDF framework.
max_atomic_width: Some(32),
atomic_cas: true,
features: "+m,+c".to_string(),
executables: true,
panic_strategy: PanicStrategy::Abort,
relocation_model: RelocModel::Static,
emit_debug_gdb_scripts: false,
eh_frame_header: false,
..Default::default()
},
}
}