59 lines
2.4 KiB
Diff
59 lines
2.4 KiB
Diff
From c6b54a373e74a1e4ce64f349b5b69105f2bc1a49 Mon Sep 17 00:00:00 2001
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From: q66 <daniel@octaforge.org>
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Date: Sun, 3 May 2020 18:08:09 +0200
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Subject: [PATCH 15/15] Use ELFv2 ABI on all powerpc64 targets
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This patches librustc_target so that ELFv2 is used everywhere, matching our
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LLVM. While this is not perfect (it does not allow rustc to compile legacy
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binaries), rustc never requests specific ABI from llvm in the first place,
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so at least match the environment we have.
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---
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src/librustc_target/abi/call/powerpc64.rs | 9 +--------
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src/librustc_target/spec/powerpc64_unknown_linux_gnu.rs | 6 +-----
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2 files changed, 2 insertions(+), 13 deletions(-)
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diff --git a/src/librustc_target/abi/call/powerpc64.rs b/src/librustc_target/abi/call/powerpc64.rs
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index 93c4e97d..96b02486 100644
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--- a/compiler/rustc_target/src/abi/call/powerpc64.rs
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+++ b/compiler/rustc_target/src/abi/call/powerpc64.rs
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@@ -119,14 +119,7 @@ where
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Ty: TyLayoutMethods<'a, C> + Copy,
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C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>> + HasDataLayout + HasTargetSpec,
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{
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- let abi = if cx.target_spec().target_env == "musl" {
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- ELFv2
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- } else {
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- match cx.data_layout().endian {
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- Endian::Big => ELFv1,
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- Endian::Little => ELFv2,
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- }
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- };
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+ let abi = ELFv2;
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if !fn_abi.ret.is_ignore() {
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classify_ret(cx, &mut fn_abi.ret, abi);
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diff --git a/src/librustc_target/spec/powerpc64_unknown_linux_gnu.rs b/src/librustc_target/spec/powerpc64_unknown_linux_gnu.rs
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index 5306d905..c63eed85 100644
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--- a/compiler/rustc_target/src/spec/powerpc64_unknown_linux_gnu.rs
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+++ b/compiler/rustc_target/src/spec/powerpc64_unknown_linux_gnu.rs
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@@ -1,4 +1,4 @@
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-use crate::spec::{LinkerFlavor, RelroLevel, Target, TargetOptions, TargetResult};
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+use crate::spec::{LinkerFlavor, Target, TargetOptions, TargetResult};
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pub fn target() -> TargetResult {
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let mut base = super::linux_base::opts();
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@@ -6,10 +6,6 @@ pub fn target() -> TargetResult {
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base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-m64".to_string());
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base.max_atomic_width = Some(64);
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- // ld.so in at least RHEL6 on ppc64 has a bug related to BIND_NOW, so only enable partial RELRO
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- // for now. https://github.com/rust-lang/rust/pull/43170#issuecomment-315411474
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- base.relro_level = RelroLevel::Partial;
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-
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Ok(Target {
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llvm_target: "powerpc64-unknown-linux-gnu".to_string(),
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target_endian: "big".to_string(),
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--
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2.26.2
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