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Add powerpc-unknown-linux-muslspe compile target
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This is almost identical to already existing targets:
- powerpc_unknown_linux_musl.rs
- powerpc_unknown_linux_gnuspe.rs

It has support for PowerPC SPE (muslspe), which
can be used with GCC version up to 8. It is useful for Freescale or IBM
cores like e500.

This was verified to be working with OpenWrt build system for CZ.NIC's
Turris 1.x routers, which are using Freescale P2020, e500v2, so add it as
a Tier 3 target.
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BKPepe committed Jul 18, 2024
1 parent 52f3c71 commit 7d56f13
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1 change: 1 addition & 0 deletions compiler/rustc_target/src/spec/mod.rs
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Expand Up @@ -1558,6 +1558,7 @@ supported_targets! {
("powerpc-unknown-linux-gnu", powerpc_unknown_linux_gnu),
("powerpc-unknown-linux-gnuspe", powerpc_unknown_linux_gnuspe),
("powerpc-unknown-linux-musl", powerpc_unknown_linux_musl),
("powerpc-unknown-linux-muslspe", powerpc_unknown_linux_muslspe),
("powerpc64-ibm-aix", powerpc64_ibm_aix),
("powerpc64-unknown-linux-gnu", powerpc64_unknown_linux_gnu),
("powerpc64-unknown-linux-musl", powerpc64_unknown_linux_musl),
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use crate::abi::Endian;
use crate::spec::{base, Cc, LinkerFlavor, Lld, StackProbeType, Target, TargetOptions};

pub fn target() -> Target {
let mut base = base::linux_gnu::opts();
base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-mspe"]);
base.max_atomic_width = Some(32);
base.stack_probes = StackProbeType::Inline;

Target {
llvm_target: "powerpc-unknown-linux-muslspe".into(),
metadata: crate::spec::TargetMetadata {
description: Some("PowerPC SPE Linux with musl".into()),
tier: Some(3),
host_tools: Some(false),
std: Some(true),
},
pointer_width: 32,
data_layout: "E-m:e-p:32:32-Fn32-i64:64-n32".into(),
arch: "powerpc".into(),
options: TargetOptions {
abi: "spe".into(),
endian: Endian::Big,
mcount: "_mcount".into(),
..base
},
}
}
1 change: 1 addition & 0 deletions src/doc/rustc/src/SUMMARY.md
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Expand Up @@ -61,6 +61,7 @@
- [mipsisa\*r6\*-unknown-linux-gnu\*](platform-support/mips-release-6.md)
- [nvptx64-nvidia-cuda](platform-support/nvptx64-nvidia-cuda.md)
- [powerpc-unknown-openbsd](platform-support/powerpc-unknown-openbsd.md)
- [powerpc-unknown-linux-muslspe](platform-support/powerpc-unknown-linux-muslspe.md)
- [powerpc64-ibm-aix](platform-support/aix.md)
- [riscv32im-risc0-zkvm-elf](platform-support/riscv32im-risc0-zkvm-elf.md)
- [riscv32imac-unknown-xous-elf](platform-support/riscv32imac-unknown-xous-elf.md)
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1 change: 1 addition & 0 deletions src/doc/rustc/src/platform-support.md
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Expand Up @@ -331,6 +331,7 @@ target | std | host | notes
`msp430-none-elf` | * | | 16-bit MSP430 microcontrollers
`powerpc-unknown-linux-gnuspe` | ✓ | | PowerPC SPE Linux
`powerpc-unknown-linux-musl` | ? | | PowerPC Linux with musl 1.2.3
[`powerpc-unknown-linux-muslspe`](platform-support/powerpc-unknown-linux-muslspe.md) | ? | | PowerPC SPE Linux
[`powerpc-unknown-netbsd`](platform-support/netbsd.md) | ✓ | ✓ | NetBSD 32-bit powerpc systems
[`powerpc-unknown-openbsd`](platform-support/powerpc-unknown-openbsd.md) | * | |
`powerpc-wrs-vxworks-spe` | ? | |
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# powerpc-unknown-linux-muslspe

**Tier: 3**

This target is very similar to already existing ones like `powerpc_unknown_linux_musl` and `powerpc_unknown_linux_gnuspe`.
This one has PowerPC SPE support for musl. Unfortunately, the last supported gcc version with PowerPC SPE is 8.4.0.

## Target maintainers

- [@BKPepe](https://github.com/BKPepe)

## Requirements

This target is cross-compiled. There is no support for `std`. There is no
default allocator, but it's possible to use `alloc` by supplying an allocator.

This target generated binaries in the ELF format.

## Building the target

This target was tested and used within the `OpenWrt` build system for CZ.NIC Turris 1.x routers using Freescale P2020.

## Building Rust programs

Rust does not yet ship pre-compiled artifacts for this target. To compile for
this target, you will either need to build Rust with the target enabled (see
"Building the target" above), or build your own copy of `core` by using
`build-std` or similar.

## Testing

This is a cross-compiled target and there is no support to run rustc test suite.

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