rustc_target/spec/targets/
thumbv5te_none_eabi.rs

1//! Targets the ARMv5TE, with code as `t32` code by default.
2
3use crate::spec::{FloatAbi, FramePointer, Target, TargetOptions, base, cvs};
4
5pub(crate) fn target() -> Target {
6    Target {
7        llvm_target: "thumbv5te-none-eabi".into(),
8        metadata: crate::spec::TargetMetadata {
9            description: Some("Thumb-mode Bare ARMv5TE".into()),
10            tier: Some(3),
11            host_tools: Some(false),
12            std: Some(false),
13        },
14        pointer_width: 32,
15        arch: "arm".into(),
16        /* Data layout args are '-' separated:
17         * little endian
18         * stack is 64-bit aligned (EABI)
19         * pointers are 32-bit
20         * i64 must be 64-bit aligned (EABI)
21         * mangle names with ELF style
22         * native integers are 32-bit
23         * All other elements are default
24         */
25        data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
26
27        options: TargetOptions {
28            abi: "eabi".into(),
29            llvm_floatabi: Some(FloatAbi::Soft),
30            // extra args passed to the external assembler (assuming `arm-none-eabi-as`):
31            // * activate t32/a32 interworking
32            // * use arch ARMv5TE
33            // * use little-endian
34            asm_args: cvs!["-mthumb-interwork", "-march=armv5te", "-mlittle-endian",],
35            // minimum extra features, these cannot be disabled via -C
36            // Also force-enable 32-bit atomics, which allows the use of atomic load/store only.
37            // The resulting atomics are ABI incompatible with atomics backed by libatomic.
38            features: "+soft-float,+strict-align,+atomics-32".into(),
39            frame_pointer: FramePointer::MayOmit,
40            main_needs_argc_argv: false,
41            // don't have atomic compare-and-swap
42            atomic_cas: false,
43            has_thumb_interworking: true,
44
45            ..base::thumb::opts()
46        },
47    }
48}