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remove DS stuff from docs + change to use thumb_base

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This commit is contained in:
Quinn Painter 2022-09-09 19:51:58 +01:00
parent 7b0377c716
commit c227f0a8c9
2 changed files with 5 additions and 21 deletions
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13
compiler/rustc_target/src/spec/armv5te_none_eabi.rs
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@ -1,6 +1,6 @@
//! Targets the ARMv5TE, with code as `a32` code by default.
use crate::spec::{cvs, LinkerFlavor, LldFlavor, PanicStrategy, RelocModel, Target, TargetOptions};
use crate::spec::{cvs, FramePointer, Target, TargetOptions};
pub fn target() -> Target {
Target {
@ -20,8 +20,6 @@ pub fn target() -> Target {
options: TargetOptions {
abi: "eabi".into(),
linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
linker: Some("rust-lld".into()),
// extra args passed to the external assembler (assuming `arm-none-eabi-as`):
// * activate t32/a32 interworking
// * use arch ARMv5TE
@ -31,18 +29,13 @@ pub fn target() -> Target {
// Also force-enable 32-bit atomics, which allows the use of atomic load/store only.
// The resulting atomics are ABI incompatible with atomics backed by libatomic.
features: "+soft-float,+strict-align,+atomics-32".into(),
frame_pointer: FramePointer::MayOmit,
main_needs_argc_argv: false,
// don't have atomic compare-and-swap
atomic_cas: false,
has_thumb_interworking: true,
relocation_model: RelocModel::Static,
panic_strategy: PanicStrategy::Abort,
// from thumb_base, rust-lang/rust#44993.
emit_debug_gdb_scripts: false,
// from thumb_base, apparently gcc/clang give enums a minimum of 8 bits on no-os targets
c_enum_min_bits: 8,
..Default::default()
..super::thumb_base::opts()
},
}
}

13
src/doc/rustc/src/platform-support/armv5te-none-eabi.md
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@ -3,13 +3,10 @@
**Tier: 3**
Bare-metal target for any cpu in the ARMv5TE architecture family, supporting
ARM/Thumb code interworking (aka `a32`/`t32`), with ARM code as the default code
ARM/Thumb code interworking (aka `a32`/`t32`), with `a32` code as the default code
generation.
The `thumbv5te-none-eabi` target is the same as this one, but with THUMB code as the default.
In particular this supports the main CPU of the Nintendo DS, but there's nothing DS
specific with this target, so any ARMv5TE device should work fine.
The `thumbv5te-none-eabi` target is the same as this one, but the instruction set defaults to `t32`.
## Target Maintainers
@ -59,12 +56,6 @@ Most of `core` should work as expected, with the following notes:
Rust programs are output as ELF files.
For running on DS hardware, you'll need to use an external tool to bundle this ELF file into an NDS binary. The `ndstool` utility included with devkitARM is one such tool that can do this for you:
```shell
ndstool -c [out_nds] -9 [in_elf]
```
## Testing
This is a cross-compiled target that you will need to emulate during testing.