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ABI fixes for ppc64 and s390x.

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This commit is contained in:
Josh Stone 2017-09-11 11:54:06 -07:00
parent 6eec89a42b
commit 99c271af8c
3 changed files with 622 additions and 1 deletions
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405
rust-1.20.0-44066-ppc64-struct-abi.patch Normal file
View File

@ -0,0 +1,405 @@
From 6f680d06544edae491d2281d89b0b93efcdd6143 Mon Sep 17 00:00:00 2001
From: bors <bors@rust-lang.org>
Date: Sat, 2 Sep 2017 19:46:51 +0000
Subject: [PATCH] Auto merge of #44066 - cuviper:powerpc64-extern-abi,
r=alexcrichton
powerpc64: improve extern struct ABI
These fixes all have to do with the 64-bit PowerPC ELF ABI for big-endian
targets. The ELF v2 ABI for powerpc64le already worked well.
- Return after marking return aggregates indirect. Fixes #42757.
- Pass one-member float aggregates as direct argument values.
- Aggregate arguments less than 64-bit must be written in the least-
significant bits of the parameter space.
- Larger aggregates are instead padded at the tail.
(i.e. filling MSBs, padding the remaining LSBs.)
New tests were also added for the single-float aggregate, and a 3-byte
aggregate to check that it's filled into LSBs. Overall, at least these
formerly-failing tests now pass on powerpc64:
- run-make/extern-fn-struct-passing-abi
- run-make/extern-fn-with-packed-struct
- run-pass/extern-pass-TwoU16s.rs
- run-pass/extern-pass-TwoU8s.rs
- run-pass/struct-return.rs
---
src/librustc_trans/cabi_powerpc64.rs | 64 +++++++++++++++++-----
src/librustc_trans/cabi_x86.rs | 41 ++++++++++++--
.../run-make/extern-fn-struct-passing-abi/test.c | 32 ++++++++++-
.../run-make/extern-fn-struct-passing-abi/test.rs | 27 +++++++++
.../run-make/extern-fn-with-packed-struct/test.c | 5 ++
.../run-make/extern-fn-with-packed-struct/test.rs | 26 +--------
6 files changed, 151 insertions(+), 44 deletions(-)
diff --git a/src/librustc_trans/cabi_powerpc64.rs b/src/librustc_trans/cabi_powerpc64.rs
index c4f8d0b4b963..a3780c8cfa92 100644
--- a/src/librustc_trans/cabi_powerpc64.rs
+++ b/src/librustc_trans/cabi_powerpc64.rs
@@ -14,14 +14,26 @@
use abi::{FnType, ArgType, LayoutExt, Reg, RegKind, Uniform};
use context::CrateContext;
+use rustc::ty::layout;
-fn is_homogenous_aggregate<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, arg: &mut ArgType<'tcx>)
+#[derive(Debug, Clone, Copy, PartialEq)]
+enum ABI {
+ ELFv1, // original ABI used for powerpc64 (big-endian)
+ ELFv2, // newer ABI used for powerpc64le
+}
+use self::ABI::*;
+
+fn is_homogenous_aggregate<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
+ arg: &mut ArgType<'tcx>,
+ abi: ABI)
-> Option<Uniform> {
arg.layout.homogenous_aggregate(ccx).and_then(|unit| {
let size = arg.layout.size(ccx);
- // Ensure we have at most eight uniquely addressable members.
- if size > unit.size.checked_mul(8, ccx).unwrap() {
+ // ELFv1 only passes one-member aggregates transparently.
+ // ELFv2 passes up to eight uniquely addressable members.
+ if (abi == ELFv1 && size > unit.size)
+ || size > unit.size.checked_mul(8, ccx).unwrap() {
return None;
}
@@ -42,21 +54,23 @@ fn is_homogenous_aggregate<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, arg: &mut Arg
})
}
-fn classify_ret_ty<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, ret: &mut ArgType<'tcx>) {
+fn classify_ret_ty<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, ret: &mut ArgType<'tcx>, abi: ABI) {
if !ret.layout.is_aggregate() {
ret.extend_integer_width_to(64);
return;
}
- // The PowerPC64 big endian ABI doesn't return aggregates in registers
- if ccx.sess().target.target.target_endian == "big" {
+ // The ELFv1 ABI doesn't return aggregates in registers
+ if abi == ELFv1 {
ret.make_indirect(ccx);
+ return;
}
- if let Some(uniform) = is_homogenous_aggregate(ccx, ret) {
+ if let Some(uniform) = is_homogenous_aggregate(ccx, ret, abi) {
ret.cast_to(ccx, uniform);
return;
}
+
let size = ret.layout.size(ccx);
let bits = size.bits();
if bits <= 128 {
@@ -80,31 +94,55 @@ fn classify_ret_ty<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, ret: &mut ArgType<'tc
ret.make_indirect(ccx);
}
-fn classify_arg_ty<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, arg: &mut ArgType<'tcx>) {
+fn classify_arg_ty<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, arg: &mut ArgType<'tcx>, abi: ABI) {
if !arg.layout.is_aggregate() {
arg.extend_integer_width_to(64);
return;
}
- if let Some(uniform) = is_homogenous_aggregate(ccx, arg) {
+ if let Some(uniform) = is_homogenous_aggregate(ccx, arg, abi) {
arg.cast_to(ccx, uniform);
return;
}
- let total = arg.layout.size(ccx);
+ let size = arg.layout.size(ccx);
+ let (unit, total) = match abi {
+ ELFv1 => {
+ // In ELFv1, aggregates smaller than a doubleword should appear in
+ // the least-significant bits of the parameter doubleword. The rest
+ // should be padded at their tail to fill out multiple doublewords.
+ if size.bits() <= 64 {
+ (Reg { kind: RegKind::Integer, size }, size)
+ } else {
+ let align = layout::Align::from_bits(64, 64).unwrap();
+ (Reg::i64(), size.abi_align(align))
+ }
+ },
+ ELFv2 => {
+ // In ELFv2, we can just cast directly.
+ (Reg::i64(), size)
+ },
+ };
+
arg.cast_to(ccx, Uniform {
- unit: Reg::i64(),
+ unit,
total
});
}
pub fn compute_abi_info<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, fty: &mut FnType<'tcx>) {
+ let abi = match ccx.sess().target.target.target_endian.as_str() {
+ "big" => ELFv1,
+ "little" => ELFv2,
+ _ => unimplemented!(),
+ };
+
if !fty.ret.is_ignore() {
- classify_ret_ty(ccx, &mut fty.ret);
+ classify_ret_ty(ccx, &mut fty.ret, abi);
}
for arg in &mut fty.args {
if arg.is_ignore() { continue; }
- classify_arg_ty(ccx, arg);
+ classify_arg_ty(ccx, arg, abi);
}
}
diff --git a/src/librustc_trans/cabi_x86.rs b/src/librustc_trans/cabi_x86.rs
index 9f5520dabe33..05932ef2de80 100644
--- a/src/librustc_trans/cabi_x86.rs
+++ b/src/librustc_trans/cabi_x86.rs
@@ -11,12 +11,30 @@
use abi::{ArgAttribute, FnType, LayoutExt, Reg, RegKind};
use common::CrateContext;
+use rustc::ty::layout::{self, Layout, TyLayout};
+
#[derive(PartialEq)]
pub enum Flavor {
General,
Fastcall
}
+fn is_single_fp_element<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
+ layout: TyLayout<'tcx>) -> bool {
+ match *layout {
+ Layout::Scalar { value: layout::F32, .. } |
+ Layout::Scalar { value: layout::F64, .. } => true,
+ Layout::Univariant { .. } => {
+ if layout.field_count() == 1 {
+ is_single_fp_element(ccx, layout.field(ccx, 0))
+ } else {
+ false
+ }
+ }
+ _ => false
+ }
+}
+
pub fn compute_abi_info<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
fty: &mut FnType<'tcx>,
flavor: Flavor) {
@@ -33,12 +51,23 @@ pub fn compute_abi_info<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
if t.options.is_like_osx || t.options.is_like_windows
|| t.options.is_like_openbsd {
let size = fty.ret.layout.size(ccx);
- match size.bytes() {
- 1 => fty.ret.cast_to(ccx, Reg::i8()),
- 2 => fty.ret.cast_to(ccx, Reg::i16()),
- 4 => fty.ret.cast_to(ccx, Reg::i32()),
- 8 => fty.ret.cast_to(ccx, Reg::i64()),
- _ => fty.ret.make_indirect(ccx)
+
+ // According to Clang, everyone but MSVC returns single-element
+ // float aggregates directly in a floating-point register.
+ if !t.options.is_like_msvc && is_single_fp_element(ccx, fty.ret.layout) {
+ match size.bytes() {
+ 4 => fty.ret.cast_to(ccx, Reg::f32()),
+ 8 => fty.ret.cast_to(ccx, Reg::f64()),
+ _ => fty.ret.make_indirect(ccx)
+ }
+ } else {
+ match size.bytes() {
+ 1 => fty.ret.cast_to(ccx, Reg::i8()),
+ 2 => fty.ret.cast_to(ccx, Reg::i16()),
+ 4 => fty.ret.cast_to(ccx, Reg::i32()),
+ 8 => fty.ret.cast_to(ccx, Reg::i64()),
+ _ => fty.ret.make_indirect(ccx)
+ }
}
} else {
fty.ret.make_indirect(ccx);
diff --git a/src/test/run-make/extern-fn-struct-passing-abi/test.c b/src/test/run-make/extern-fn-struct-passing-abi/test.c
index 44a940a17a98..25cd6da10b8f 100644
--- a/src/test/run-make/extern-fn-struct-passing-abi/test.c
+++ b/src/test/run-make/extern-fn-struct-passing-abi/test.c
@@ -43,6 +43,16 @@ struct FloatPoint {
double y;
};
+struct FloatOne {
+ double x;
+};
+
+struct IntOdd {
+ int8_t a;
+ int8_t b;
+ int8_t c;
+};
+
// System V x86_64 ABI:
// a, b, c, d, e should be in registers
// s should be byval pointer
@@ -283,7 +293,7 @@ struct Huge huge_struct(struct Huge s) {
// p should be in registers
// return should be in registers
//
-// Win64 ABI:
+// Win64 ABI and 64-bit PowerPC ELFv1 ABI:
// p should be a byval pointer
// return should be in a hidden sret pointer
struct FloatPoint float_point(struct FloatPoint p) {
@@ -292,3 +302,23 @@ struct FloatPoint float_point(struct FloatPoint p) {
return p;
}
+
+// 64-bit PowerPC ELFv1 ABI:
+// f1 should be in a register
+// return should be in a hidden sret pointer
+struct FloatOne float_one(struct FloatOne f1) {
+ assert(f1.x == 7.);
+
+ return f1;
+}
+
+// 64-bit PowerPC ELFv1 ABI:
+// i should be in the least-significant bits of a register
+// return should be in a hidden sret pointer
+struct IntOdd int_odd(struct IntOdd i) {
+ assert(i.a == 1);
+ assert(i.b == 2);
+ assert(i.c == 3);
+
+ return i;
+}
diff --git a/src/test/run-make/extern-fn-struct-passing-abi/test.rs b/src/test/run-make/extern-fn-struct-passing-abi/test.rs
index aaae7ae4fb49..54a4f868eb4e 100644
--- a/src/test/run-make/extern-fn-struct-passing-abi/test.rs
+++ b/src/test/run-make/extern-fn-struct-passing-abi/test.rs
@@ -53,6 +53,20 @@ struct FloatPoint {
y: f64
}
+#[derive(Clone, Copy, Debug, PartialEq)]
+#[repr(C)]
+struct FloatOne {
+ x: f64,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq)]
+#[repr(C)]
+struct IntOdd {
+ a: i8,
+ b: i8,
+ c: i8,
+}
+
#[link(name = "test", kind = "static")]
extern {
fn byval_rect(a: i32, b: i32, c: i32, d: i32, e: i32, s: Rect);
@@ -83,6 +97,10 @@ extern {
fn huge_struct(s: Huge) -> Huge;
fn float_point(p: FloatPoint) -> FloatPoint;
+
+ fn float_one(f: FloatOne) -> FloatOne;
+
+ fn int_odd(i: IntOdd) -> IntOdd;
}
fn main() {
@@ -91,6 +109,8 @@ fn main() {
let u = FloatRect { a: 3489, b: 3490, c: 8. };
let v = Huge { a: 5647, b: 5648, c: 5649, d: 5650, e: 5651 };
let p = FloatPoint { x: 5., y: -3. };
+ let f1 = FloatOne { x: 7. };
+ let i = IntOdd { a: 1, b: 2, c: 3 };
unsafe {
byval_rect(1, 2, 3, 4, 5, s);
@@ -113,5 +133,12 @@ fn main() {
assert_eq!(sret_byval_struct(1, 2, 3, 4, s), t);
assert_eq!(sret_split_struct(1, 2, s), t);
assert_eq!(float_point(p), p);
+ assert_eq!(int_odd(i), i);
+
+ // MSVC/GCC/Clang are not consistent in the ABI of single-float aggregates.
+ // x86_64: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82028
+ // i686: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82041
+ #[cfg(not(all(windows, target_env = "gnu")))]
+ assert_eq!(float_one(f1), f1);
}
}
diff --git a/src/test/run-make/extern-fn-with-packed-struct/test.c b/src/test/run-make/extern-fn-with-packed-struct/test.c
index 506954fca461..4124e202c1dd 100644
--- a/src/test/run-make/extern-fn-with-packed-struct/test.c
+++ b/src/test/run-make/extern-fn-with-packed-struct/test.c
@@ -1,6 +1,8 @@
// ignore-license
// Pragma needed cause of gcc bug on windows: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52991
+#include <assert.h>
+
#ifdef _MSC_VER
#pragma pack(push,1)
struct Foo {
@@ -18,5 +20,8 @@ struct __attribute__((packed)) Foo {
#endif
struct Foo foo(struct Foo foo) {
+ assert(foo.a == 1);
+ assert(foo.b == 2);
+ assert(foo.c == 3);
return foo;
}
diff --git a/src/test/run-make/extern-fn-with-packed-struct/test.rs b/src/test/run-make/extern-fn-with-packed-struct/test.rs
index 9e81636e3670..d2540ad61542 100644
--- a/src/test/run-make/extern-fn-with-packed-struct/test.rs
+++ b/src/test/run-make/extern-fn-with-packed-struct/test.rs
@@ -8,36 +8,14 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-use std::fmt;
-
-#[repr(packed)]
-#[derive(Copy, Clone)]
+#[repr(C, packed)]
+#[derive(Copy, Clone, Debug, PartialEq)]
struct Foo {
a: i8,
b: i16,
c: i8
}
-impl PartialEq for Foo {
- fn eq(&self, other: &Foo) -> bool {
- self.a == other.a && self.b == other.b && self.c == other.c
- }
-}
-
-impl fmt::Debug for Foo {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- let a = self.a;
- let b = self.b;
- let c = self.c;
-
- f.debug_struct("Foo")
- .field("a", &a)
- .field("b", &b)
- .field("c", &c)
- .finish()
- }
-}
-
#[link(name = "test", kind = "static")]
extern {
fn foo(f: Foo) -> Foo;
--
2.13.5

209
rust-1.20.0-44440-s390x-global-align.patch Normal file
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@ -0,0 +1,209 @@
From 3ca86983df58daf0242b0618d3beb9ea917193e2 Mon Sep 17 00:00:00 2001
From: bors <bors@rust-lang.org>
Date: Mon, 11 Sep 2017 12:53:21 +0000
Subject: [PATCH] Auto merge of #44440 - cuviper:min_global_align, r=japaric
Add `TargetOptions::min_global_align`, with s390x at 16-bit
The SystemZ `LALR` instruction provides PC-relative addressing for globals,
but only to *even* addresses, so other compilers make sure that such
globals are always 2-byte aligned. In Clang, this is modeled with
`TargetInfo::MinGlobalAlign`, and `TargetOptions::min_global_align` now
serves the same purpose for rustc.
In Clang, the only targets that set this are SystemZ, Lanai, and NVPTX, and
the latter two don't have targets in rust master.
Fixes #44411.
r? @eddyb
---
src/librustc_back/target/mod.rs | 6 ++++
.../target/s390x_unknown_linux_gnu.rs | 1 +
src/librustc_trans/consts.rs | 24 ++++++++++++--
src/test/run-make/min-global-align/Makefile | 22 +++++++++++++
.../run-make/min-global-align/min_global_align.rs | 38 ++++++++++++++++++++++
5 files changed, 89 insertions(+), 2 deletions(-)
create mode 100644 src/test/run-make/min-global-align/Makefile
create mode 100644 src/test/run-make/min-global-align/min_global_align.rs
diff --git a/src/librustc_back/target/mod.rs b/src/librustc_back/target/mod.rs
index edbbcf6f0b64..f88a3879d6c0 100644
--- a/src/librustc_back/target/mod.rs
+++ b/src/librustc_back/target/mod.rs
@@ -414,6 +414,9 @@ pub struct TargetOptions {
/// Whether or not stack probes (__rust_probestack) are enabled
pub stack_probes: bool,
+
+ /// The minimum alignment for global symbols.
+ pub min_global_align: Option<u64>,
}
impl Default for TargetOptions {
@@ -472,6 +475,7 @@ impl Default for TargetOptions {
abi_blacklist: vec![],
crt_static_default: false,
stack_probes: false,
+ min_global_align: None,
}
}
}
@@ -695,6 +699,7 @@ impl Target {
try!(key!(panic_strategy, PanicStrategy));
key!(crt_static_default, bool);
key!(stack_probes, bool);
+ key!(min_global_align, Option<u64>);
if let Some(array) = obj.find("abi-blacklist").and_then(Json::as_array) {
for name in array.iter().filter_map(|abi| abi.as_string()) {
@@ -882,6 +887,7 @@ impl ToJson for Target {
target_option_val!(panic_strategy);
target_option_val!(crt_static_default);
target_option_val!(stack_probes);
+ target_option_val!(min_global_align);
if default.abi_blacklist != self.options.abi_blacklist {
d.insert("abi-blacklist".to_string(), self.options.abi_blacklist.iter()
diff --git a/src/librustc_back/target/s390x_unknown_linux_gnu.rs b/src/librustc_back/target/s390x_unknown_linux_gnu.rs
index 78a6bb7933d9..aad9effacd44 100644
--- a/src/librustc_back/target/s390x_unknown_linux_gnu.rs
+++ b/src/librustc_back/target/s390x_unknown_linux_gnu.rs
@@ -22,6 +22,7 @@ pub fn target() -> TargetResult {
base.max_atomic_width = Some(64);
// see #36994
base.exe_allocation_crate = None;
+ base.min_global_align = Some(16);
Ok(Target {
llvm_target: "s390x-unknown-linux-gnu".to_string(),
diff --git a/src/librustc_trans/consts.rs b/src/librustc_trans/consts.rs
index eac0a0625671..cfb29d848d0f 100644
--- a/src/librustc_trans/consts.rs
+++ b/src/librustc_trans/consts.rs
@@ -26,6 +26,7 @@ use rustc::ty;
use rustc::hir;
+use std::cmp;
use std::ffi::{CStr, CString};
use syntax::ast;
use syntax::attr;
@@ -36,6 +37,25 @@ pub fn ptrcast(val: ValueRef, ty: Type) -> ValueRef {
}
}
+fn set_global_alignment(ccx: &CrateContext,
+ gv: ValueRef,
+ mut align: machine::llalign) {
+ // The target may require greater alignment for globals than the type does.
+ // Note: GCC and Clang also allow `__attribute__((aligned))` on variables,
+ // which can force it to be smaller. Rust doesn't support this yet.
+ if let Some(min) = ccx.sess().target.target.options.min_global_align {
+ match ty::layout::Align::from_bits(min, min) {
+ Ok(min) => align = cmp::max(align, min.abi() as machine::llalign),
+ Err(err) => {
+ ccx.sess().err(&format!("invalid minimum global alignment: {}", err));
+ }
+ }
+ }
+ unsafe {
+ llvm::LLVMSetAlignment(gv, align);
+ }
+}
+
pub fn addr_of_mut(ccx: &CrateContext,
cv: ValueRef,
align: machine::llalign,
@@ -47,7 +67,7 @@ pub fn addr_of_mut(ccx: &CrateContext,
bug!("symbol `{}` is already defined", name);
});
llvm::LLVMSetInitializer(gv, cv);
- llvm::LLVMSetAlignment(gv, align);
+ set_global_alignment(ccx, gv, align);
llvm::LLVMRustSetLinkage(gv, llvm::Linkage::InternalLinkage);
SetUnnamedAddr(gv, true);
gv
@@ -251,7 +271,7 @@ pub fn trans_static<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
ccx.statics_to_rauw().borrow_mut().push((g, new_g));
new_g
};
- llvm::LLVMSetAlignment(g, ccx.align_of(ty));
+ set_global_alignment(ccx, g, ccx.align_of(ty));
llvm::LLVMSetInitializer(g, v);
// As an optimization, all shared statics which do not have interior
diff --git a/src/test/run-make/min-global-align/Makefile b/src/test/run-make/min-global-align/Makefile
new file mode 100644
index 000000000000..2eacc36f380d
--- /dev/null
+++ b/src/test/run-make/min-global-align/Makefile
@@ -0,0 +1,22 @@
+-include ../tools.mk
+
+# This tests ensure that global variables respect the target minimum alignment.
+# The three bools `STATIC_BOOL`, `STATIC_MUT_BOOL`, and `CONST_BOOL` all have
+# type-alignment of 1, but some targets require greater global alignment.
+
+SRC = min_global_align.rs
+LL = $(TMPDIR)/min_global_align.ll
+
+all:
+ifeq ($(UNAME),Linux)
+# Most targets are happy with default alignment -- take i686 for example.
+ifeq ($(filter x86,$(LLVM_COMPONENTS)),x86)
+ $(RUSTC) --target=i686-unknown-linux-gnu --emit=llvm-ir $(SRC)
+ [ "$$(grep -c 'align 1' "$(LL)")" -eq "3" ]
+endif
+# SystemZ requires even alignment for PC-relative addressing.
+ifeq ($(filter systemz,$(LLVM_COMPONENTS)),systemz)
+ $(RUSTC) --target=s390x-unknown-linux-gnu --emit=llvm-ir $(SRC)
+ [ "$$(grep -c 'align 2' "$(LL)")" -eq "3" ]
+endif
+endif
diff --git a/src/test/run-make/min-global-align/min_global_align.rs b/src/test/run-make/min-global-align/min_global_align.rs
new file mode 100644
index 000000000000..3d4f9001a747
--- /dev/null
+++ b/src/test/run-make/min-global-align/min_global_align.rs
@@ -0,0 +1,38 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(no_core, lang_items)]
+#![crate_type="rlib"]
+#![no_core]
+
+pub static STATIC_BOOL: bool = true;
+
+pub static mut STATIC_MUT_BOOL: bool = true;
+
+const CONST_BOOL: bool = true;
+pub static CONST_BOOL_REF: &'static bool = &CONST_BOOL;
+
+
+#[lang = "sized"]
+trait Sized {}
+
+#[lang = "copy"]
+trait Copy {}
+
+#[lang = "freeze"]
+trait Freeze {}
+
+#[lang = "sync"]
+trait Sync {}
+impl Sync for bool {}
+impl Sync for &'static bool {}
+
+#[lang="drop_in_place"]
+pub unsafe fn drop_in_place<T: ?Sized>(_: *mut T) { }
--
2.13.5

9
rust.spec
View File

@ -48,7 +48,7 @@
Name: rust
Version: 1.20.0
Release: 1%{?dist}
Release: 2%{?dist}
Summary: The Rust Programming Language
License: (ASL 2.0 or MIT) and (BSD and ISC and MIT)
# ^ written as: (rust itself) and (bundled libraries)
@ -64,6 +64,8 @@ Source0: https://static.rust-lang.org/dist/%{rustc_package}.tar.xz
Patch1: rust-1.19.0-43297-configure-debuginfo.patch
Patch2: rust-1.20.0-44203-exclude-compiler-rt-test.patch
Patch3: rust-1.20.0-44066-ppc64-struct-abi.patch
Patch4: rust-1.20.0-44440-s390x-global-align.patch
# Get the Rust triple for any arch.
%{lua: function rust_triple(arch)
@ -311,6 +313,8 @@ sed -i.ffi -e '$a #[link(name = "ffi")] extern {}' \
%patch1 -p1 -b .debuginfo
%patch2 -p1 -b .compiler-rt
%patch3 -p1 -b .ppc64-struct-abi
%patch4 -p1 -b .s390x-global-align
# The configure macro will modify some autoconf-related files, which upsets
# cargo when it tries to verify checksums in those files. If we just truncate
@ -469,6 +473,9 @@ rm -f %{buildroot}%{rustlibdir}/etc/lldb_*.py*
%changelog
* Mon Sep 11 2017 Josh Stone <jistone@redhat.com> - 1.20.0-2
- ABI fixes for ppc64 and s390x.
* Thu Aug 31 2017 Josh Stone <jistone@redhat.com> - 1.20.0-1
- Update to 1.20.0.
- Add a rust-src subpackage.