remove DS stuff from docs + change to use thumb_base
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2 changed files with 5 additions and 21 deletions
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@ -1,6 +1,6 @@
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//! Targets the ARMv5TE, with code as `a32` code by default.
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//! Targets the ARMv5TE, with code as `a32` code by default.
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use crate::spec::{cvs, LinkerFlavor, LldFlavor, PanicStrategy, RelocModel, Target, TargetOptions};
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use crate::spec::{cvs, FramePointer, Target, TargetOptions};
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pub fn target() -> Target {
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pub fn target() -> Target {
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Target {
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Target {
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@ -20,8 +20,6 @@ pub fn target() -> Target {
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options: TargetOptions {
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options: TargetOptions {
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abi: "eabi".into(),
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abi: "eabi".into(),
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linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
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linker: Some("rust-lld".into()),
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// extra args passed to the external assembler (assuming `arm-none-eabi-as`):
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// extra args passed to the external assembler (assuming `arm-none-eabi-as`):
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// * activate t32/a32 interworking
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// * activate t32/a32 interworking
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// * use arch ARMv5TE
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// * use arch ARMv5TE
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@ -31,18 +29,13 @@ pub fn target() -> Target {
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// Also force-enable 32-bit atomics, which allows the use of atomic load/store only.
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// Also force-enable 32-bit atomics, which allows the use of atomic load/store only.
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// The resulting atomics are ABI incompatible with atomics backed by libatomic.
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// The resulting atomics are ABI incompatible with atomics backed by libatomic.
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features: "+soft-float,+strict-align,+atomics-32".into(),
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features: "+soft-float,+strict-align,+atomics-32".into(),
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frame_pointer: FramePointer::MayOmit,
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main_needs_argc_argv: false,
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main_needs_argc_argv: false,
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// don't have atomic compare-and-swap
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// don't have atomic compare-and-swap
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atomic_cas: false,
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atomic_cas: false,
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has_thumb_interworking: true,
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has_thumb_interworking: true,
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relocation_model: RelocModel::Static,
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panic_strategy: PanicStrategy::Abort,
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// from thumb_base, rust-lang/rust#44993.
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emit_debug_gdb_scripts: false,
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// from thumb_base, apparently gcc/clang give enums a minimum of 8 bits on no-os targets
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c_enum_min_bits: 8,
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..Default::default()
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..super::thumb_base::opts()
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},
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},
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}
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}
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}
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}
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@ -3,13 +3,10 @@
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**Tier: 3**
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**Tier: 3**
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Bare-metal target for any cpu in the ARMv5TE architecture family, supporting
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Bare-metal target for any cpu in the ARMv5TE architecture family, supporting
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ARM/Thumb code interworking (aka `a32`/`t32`), with ARM code as the default code
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ARM/Thumb code interworking (aka `a32`/`t32`), with `a32` code as the default code
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generation.
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generation.
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The `thumbv5te-none-eabi` target is the same as this one, but with THUMB code as the default.
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The `thumbv5te-none-eabi` target is the same as this one, but the instruction set defaults to `t32`.
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In particular this supports the main CPU of the Nintendo DS, but there's nothing DS
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specific with this target, so any ARMv5TE device should work fine.
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## Target Maintainers
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## Target Maintainers
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@ -59,12 +56,6 @@ Most of `core` should work as expected, with the following notes:
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Rust programs are output as ELF files.
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Rust programs are output as ELF files.
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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:
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```shell
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ndstool -c [out_nds] -9 [in_elf]
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```
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## Testing
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## Testing
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This is a cross-compiled target that you will need to emulate during testing.
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This is a cross-compiled target that you will need to emulate during testing.
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