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Commit 23f3f22

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Add powerpc64-unknown-linux-gnuelfv2 target
This is virtually the same target as the existing -gnu target, but using the ELFv2 ABI instead of the ELFv1 ABI and made possible now that we expose target_abi = "elfv1" or "elfv2" on the 64-bit PowerPC targets. Signed-off-by: Jens Reidel <adrian@travitia.xyz>
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‎compiler/rustc_target/src/spec/mod.rs

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("powerpc-unknown-linux-muslspe", powerpc_unknown_linux_muslspe),
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("powerpc64-ibm-aix", powerpc64_ibm_aix),
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("powerpc64-unknown-linux-gnu", powerpc64_unknown_linux_gnu),
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("powerpc64-unknown-linux-gnuelfv2", powerpc64_unknown_linux_gnuelfv2),
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("powerpc64-unknown-linux-musl", powerpc64_unknown_linux_musl),
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("powerpc64le-unknown-linux-gnu", powerpc64le_unknown_linux_gnu),
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("powerpc64le-unknown-linux-musl", powerpc64le_unknown_linux_musl),
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use rustc_abi::Endian;
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use crate::spec::{
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Cc, LinkerFlavor, Lld, StackProbeType, Target, TargetMetadata, TargetOptions, base,
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};
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pub(crate) fn target() -> Target {
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let mut base = base::linux_gnu::opts();
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base.cpu = "ppc64".into();
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base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m64"]);
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base.max_atomic_width = Some(64);
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base.stack_probes = StackProbeType::Inline;
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base.abi = "elfv2".into();
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base.llvm_abiname = "elfv2".into();
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Target {
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llvm_target: "powerpc64-unknown-linux-gnu".into(),
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metadata: TargetMetadata {
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description: Some("PPC64 Linux (ELFv2 ABI, kernel 3.2, glibc 2.17)".into()),
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tier: Some(3),
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host_tools: Some(false),
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std: Some(true),
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},
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pointer_width: 64,
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data_layout: "E-m:e-Fn32-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512".into(),
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arch: "powerpc64".into(),
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options: TargetOptions { endian: Endian::Big, mcount: "_mcount".into(), ..base },
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}
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}

‎src/bootstrap/src/core/sanity.rs

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// Targets can be removed from this list once they are present in the stage0 compiler (usually by updating the beta compiler of the bootstrap).
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const STAGE0_MISSING_TARGETS: &[&str] = &[
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// just a dummy comment so the list doesn't get onelined
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"powerpc64-unknown-linux-gnuelfv2",
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];
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/// Minimum version threshold for libstdc++ required when using prebuilt LLVM

‎src/doc/rustc/src/SUMMARY.md

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- [powerpc-unknown-linux-gnuspe](platform-support/powerpc-unknown-linux-gnuspe.md)
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- [powerpc-unknown-linux-muslspe](platform-support/powerpc-unknown-linux-muslspe.md)
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- [powerpc64-ibm-aix](platform-support/aix.md)
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- [powerpc64-unknown-linux-gnuelfv2](platform-support/powerpc64-unknown-linux-gnuelfv2.md)
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- [powerpc64-unknown-linux-musl](platform-support/powerpc64-unknown-linux-musl.md)
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- [powerpc64le-unknown-linux-gnu](platform-support/powerpc64le-unknown-linux-gnu.md)
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- [powerpc64le-unknown-linux-musl](platform-support/powerpc64le-unknown-linux-musl.md)

‎src/doc/rustc/src/platform-support.md

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[`powerpc-wrs-vxworks-spe`](platform-support/vxworks.md) | ✓ | |
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[`powerpc64-ibm-aix`](platform-support/aix.md) | ? | | 64-bit AIX (7.2 and newer)
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[`powerpc64-unknown-freebsd`](platform-support/freebsd.md) | ✓ | ✓ | PPC64 FreeBSD (ELFv2)
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[`powerpc64-unknown-linux-gnuelfv2`](platform-support/powerpc64-unknown-linux-gnuelfv2.md) | ✓ | ✓ | PPC64 Linux (ELFv2 ABI, kernel 3.2, glibc 2.17)
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[`powerpc64-unknown-linux-musl`](platform-support/powerpc64-unknown-linux-musl.md) | ✓ | ✓ | PPC64 Linux (kernel 4.19, musl 1.2.3)
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[`powerpc64-unknown-openbsd`](platform-support/openbsd.md) | ✓ | ✓ | OpenBSD/powerpc64
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[`powerpc64-wrs-vxworks`](platform-support/vxworks.md) | ✓ | |
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# powerpc64-unknown-linux-gnuelfv2
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**Tier: 3**
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Target for 64-bit big endian PowerPC Linux programs using the ELFv2 ABI and
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the GNU C library.
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## Target maintainers
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[@Gelbpunkt](https://github.com/Gelbpunkt)
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## Requirements
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Building the target itself requires a 64-bit big endian PowerPC compiler that
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uses the ELFv2 ABI and is supported by `cc-rs`.
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## Building the target
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The target can be built by enabling it for a `rustc` build.
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```toml
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[build]
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target = ["powerpc64-unknown-linux-gnuelfv2"]
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```
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Make sure your C compiler is included in `$PATH`, then add it to the
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`bootstrap.toml`:
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```toml
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[target.powerpc64-unknown-linux-gnuelfv2]
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cc = "powerpc64-linux-gnu-gcc"
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cxx = "powerpc64-linux-gnu-g++"
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ar = "powerpc64-linux-gnu-ar"
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linker = "powerpc64-linux-gnu-gcc"
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```
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## Building Rust programs
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Rust does not yet ship pre-compiled artifacts for this target. To compile for
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this target, you will first need to build Rust with the target enabled (see
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"Building the target" above).
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## Cross-compilation
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This target can be cross-compiled from any host.
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## Testing
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This target can be tested as normal with `x.py` on a 64-bit big endian PowerPC
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host or via QEMU emulation.

‎tests/assembly/targets/targets-elf.rs

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//@ revisions: powerpc64_unknown_linux_gnu
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//@ [powerpc64_unknown_linux_gnu] compile-flags: --target powerpc64-unknown-linux-gnu
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//@ [powerpc64_unknown_linux_gnu] needs-llvm-components: powerpc
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//@ revisions: powerpc64_unknown_linux_gnuelfv2
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//@ [powerpc64_unknown_linux_gnuelfv2] compile-flags: --target powerpc64-unknown-linux-gnuelfv2
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//@ [powerpc64_unknown_linux_gnuelfv2] needs-llvm-components: powerpc
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//@ revisions: powerpc64_unknown_linux_musl
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//@ [powerpc64_unknown_linux_musl] compile-flags: --target powerpc64-unknown-linux-musl
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//@ [powerpc64_unknown_linux_musl] needs-llvm-components: powerpc

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