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Add NuttX support for AArch64 and ARMv7-A targets

This patch adds tier 3 support for AArch64 and ARMv7-A targets in NuttX,
including:
- AArch64 target: aarch64-unknown-nuttx
- ARMv7-A target: armv7a-nuttx-eabi, armv7a-nuttx-eabihf
- Thumbv7-A target: thumbv7a-nuttx-eabi, thumbv7a-nuttx-eabihf

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
This commit is contained in:
Huang Qi 2025-01-07 20:28:41 +08:00
parent 1d55f7270d
commit 0fe555a84d
9 changed files with 230 additions and 2 deletions

View file

@ -1853,6 +1853,8 @@ supported_targets! {
("armv7a-none-eabi", armv7a_none_eabi),
("armv7a-none-eabihf", armv7a_none_eabihf),
("armv7a-nuttx-eabi", armv7a_nuttx_eabi),
("armv7a-nuttx-eabihf", armv7a_nuttx_eabihf),
("msp430-none-elf", msp430_none_elf),
@ -1896,6 +1898,7 @@ supported_targets! {
("aarch64-unknown-none", aarch64_unknown_none),
("aarch64-unknown-none-softfloat", aarch64_unknown_none_softfloat),
("aarch64-unknown-nuttx", aarch64_unknown_nuttx),
("x86_64-fortanix-unknown-sgx", x86_64_fortanix_unknown_sgx),
@ -1971,6 +1974,8 @@ supported_targets! {
("x86_64-unknown-linux-none", x86_64_unknown_linux_none),
("thumbv6m-nuttx-eabi", thumbv6m_nuttx_eabi),
("thumbv7a-nuttx-eabi", thumbv7a_nuttx_eabi),
("thumbv7a-nuttx-eabihf", thumbv7a_nuttx_eabihf),
("thumbv7m-nuttx-eabi", thumbv7m_nuttx_eabi),
("thumbv7em-nuttx-eabi", thumbv7em_nuttx_eabi),
("thumbv7em-nuttx-eabihf", thumbv7em_nuttx_eabihf),

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@ -0,0 +1,46 @@
// Generic AArch64 target for NuttX OS
//
// Can be used in conjunction with the `target-feature` and
// `target-cpu` compiler flags to opt-in more hardware-specific
// features.
//
// For example, `-C target-cpu=cortex-a53`.
use crate::spec::{
Cc, LinkerFlavor, Lld, PanicStrategy, RelocModel, SanitizerSet, StackProbeType, Target,
TargetOptions, cvs,
};
pub(crate) fn target() -> Target {
let opts = TargetOptions {
linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
linker: Some("rust-lld".into()),
// Enable the Cortex-A53 errata 843419 mitigation by default
pre_link_args: TargetOptions::link_args(LinkerFlavor::Gnu(Cc::No, Lld::No), &[
"--fix-cortex-a53-843419",
]),
features: "+v8a,+strict-align,+neon,+fp-armv8".into(),
supported_sanitizers: SanitizerSet::KCFI | SanitizerSet::KERNELADDRESS,
relocation_model: RelocModel::Static,
disable_redzone: true,
max_atomic_width: Some(128),
stack_probes: StackProbeType::Inline,
panic_strategy: PanicStrategy::Abort,
families: cvs!["unix"],
os: "nuttx".into(),
..Default::default()
};
Target {
llvm_target: "aarch64-unknown-none".into(),
metadata: crate::spec::TargetMetadata {
description: Some("AArch64 NuttX".into()),
tier: Some(3),
host_tools: Some(false),
std: Some(false),
},
pointer_width: 64,
data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: opts,
}
}

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@ -0,0 +1,41 @@
// Targets Cortex-A7/A8/A9 processors (ARMv7-A) running NuttX
//
// This target assumes that the device does NOT have a FPU (Floating Point Unit)
// and will use software floating point operations. This matches the NuttX EABI
// configuration without hardware floating point support.
use crate::spec::{
Cc, FloatAbi, LinkerFlavor, Lld, PanicStrategy, RelocModel, Target, TargetOptions, cvs,
};
pub(crate) fn target() -> Target {
let opts = TargetOptions {
abi: "eabi".into(),
llvm_floatabi: Some(FloatAbi::Soft),
linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
linker: Some("rust-lld".into()),
features: "+v7,+thumb2,+soft-float,-neon,+strict-align".into(),
relocation_model: RelocModel::Static,
disable_redzone: true,
max_atomic_width: Some(64),
panic_strategy: PanicStrategy::Abort,
emit_debug_gdb_scripts: false,
c_enum_min_bits: Some(8),
families: cvs!["unix"],
os: "nuttx".into(),
..Default::default()
};
Target {
llvm_target: "armv7a-none-eabi".into(),
metadata: crate::spec::TargetMetadata {
description: Some("ARMv7-A Cortex-A with NuttX".into()),
tier: Some(3),
host_tools: Some(false),
std: Some(false),
},
pointer_width: 32,
data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
arch: "arm".into(),
options: opts,
}
}

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@ -0,0 +1,41 @@
// Targets Cortex-A7/A8/A9 processors (ARMv7-A) running NuttX with hardware floating point
//
// This target assumes that the device has a FPU (Floating Point Unit)
// and will use hardware floating point operations. This matches the NuttX EABI
// configuration with hardware floating point support.
use crate::spec::{
Cc, FloatAbi, LinkerFlavor, Lld, PanicStrategy, RelocModel, Target, TargetOptions, cvs,
};
pub(crate) fn target() -> Target {
let opts = TargetOptions {
abi: "eabihf".into(),
llvm_floatabi: Some(FloatAbi::Hard),
linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
linker: Some("rust-lld".into()),
features: "+v7,+thumb2,+vfp3,+neon,+strict-align".into(),
relocation_model: RelocModel::Static,
disable_redzone: true,
max_atomic_width: Some(64),
panic_strategy: PanicStrategy::Abort,
emit_debug_gdb_scripts: false,
c_enum_min_bits: Some(8),
families: cvs!["unix"],
os: "nuttx".into(),
..Default::default()
};
Target {
llvm_target: "armv7a-none-eabihf".into(),
metadata: crate::spec::TargetMetadata {
description: Some("ARMv7-A Cortex-A with NuttX (hard float)".into()),
tier: Some(3),
host_tools: Some(false),
std: Some(false),
},
pointer_width: 32,
data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
arch: "arm".into(),
options: opts,
}
}

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@ -0,0 +1,33 @@
// Targets Cortex-A7/A8/A9 processors (ARMv7-A)
//
// This target assumes that the device does NOT have a FPU (Floating Point Unit)
// and will use software floating point operations. This matches the NuttX EABI
// configuration without hardware floating point support.
use crate::spec::{FloatAbi, Target, TargetOptions, base, cvs};
pub(crate) fn target() -> Target {
Target {
llvm_target: "thumbv7a-none-eabi".into(),
metadata: crate::spec::TargetMetadata {
description: None,
tier: None,
host_tools: None,
std: None,
},
pointer_width: 32,
data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
arch: "arm".into(),
options: TargetOptions {
families: cvs!["unix"],
os: "nuttx".into(),
abi: "eabi".into(),
llvm_floatabi: Some(FloatAbi::Soft),
// Cortex-A7/A8/A9 with software floating point
features: "+soft-float,-neon".into(),
max_atomic_width: Some(64),
..base::thumb::opts()
},
}
}

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@ -0,0 +1,37 @@
// Targets Cortex-A7/A8/A9 processors (ARMv7-A)
//
// This target assumes that the device has a FPU (Floating Point Unit) and lowers all (single
// precision) floating point operations to hardware instructions. Cortex-A7/A8/A9 processors
// support VFPv3-D32 or VFPv4-D32 floating point units with optional double-precision support.
//
// This target uses the "hard" floating convention (ABI) where floating point values
// are passed to/from subroutines via FPU registers (S0, S1, D0, D1, etc.).
use crate::spec::{FloatAbi, Target, TargetOptions, base, cvs};
pub(crate) fn target() -> Target {
Target {
llvm_target: "thumbv7a-none-eabihf".into(),
metadata: crate::spec::TargetMetadata {
description: None,
tier: None,
host_tools: None,
std: None,
},
pointer_width: 32,
data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
arch: "arm".into(),
options: TargetOptions {
families: cvs!["unix"],
os: "nuttx".into(),
abi: "eabihf".into(),
llvm_floatabi: Some(FloatAbi::Hard),
// Cortex-A7/A8/A9 support VFPv3-D32/VFPv4-D32 with optional double-precision
// and NEON SIMD instructions
features: "+vfp3,+neon".into(),
max_atomic_width: Some(64),
..base::thumb::opts()
},
}
}