1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

// Generic x86-64 target for bare-metal code - Floating point disabled
//
// Can be used in conjunction with the `target-feature` and
// `target-cpu` compiler flags to opt-in more hardware-specific
// features.

use super::{CodeModel, LinkerFlavor, LldFlavor, PanicStrategy};
use super::{RelroLevel, StackProbeType, Target, TargetOptions};

pub fn target() -> Target {
    let opts = TargetOptions {
        cpu: "x86-64".into(),
        max_atomic_width: Some(64),
        // don't use probe-stack=inline-asm until rust#83139 and rust#84667 are resolved
        stack_probes: StackProbeType::Call,
        position_independent_executables: true,
        static_position_independent_executables: true,
        relro_level: RelroLevel::Full,
        linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
        linker: Some("rust-lld".into()),
        features:
            "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float"
                .into(),
        disable_redzone: true,
        panic_strategy: PanicStrategy::Abort,
        code_model: Some(CodeModel::Kernel),
        ..Default::default()
    };
    Target {
        llvm_target: "x86_64-unknown-none-elf".into(),
        pointer_width: 64,
        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
            .into(),
        arch: "x86_64".into(),
        options: opts,
    }
}