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sparc64-linux support #38726

Merged
merged 9 commits into from
Jan 1, 2017
Merged

sparc64-linux support #38726

merged 9 commits into from
Jan 1, 2017

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japaric
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@japaric japaric commented Dec 31, 2016

This is built on top of #38656 and depends on rust-lang/libc#483

Hello world works.

The libc-test test suite passes.

panic! doesn't fully work:

$ qemu-sparc64-static ./panic
thread 'main' panicked at 'explicit panic', panic.rs:1
note: Run with `RUST_BACKTRACE=1` for a backtrace.
Illegal instruction (core dumped)

Backtraces don't work either, probably related to the previous point:

$ export RUST_BACKTRACE=1
$ qemu-sparc64-static ./panic
thread 'main' panicked at 'explicit panic', panic.rs:1
stack backtrace:
Illegal instruction (core dumped)

r? @alexcrichton

@jakllsch Does panicking / backtraces work on sparc64-netbsd?

cc @glaubitz

@rust-highfive
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @alexcrichton (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

@glaubitz
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@japaric If you rather want to debug on a real machine than on qemu, let me know. If you like, please join us in #sparc on Freenode.

@jrtc27
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jrtc27 commented Dec 31, 2016

At a glance, the C ABI seems wrong; small structs should be passed in and returned in registers.

@jakllsch
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@japaric Yes, backtrace of fn main() { println!("Goodbye World!"); panic!(); } produces an identical backtrace (with RUST_BACKTRACE=1) on NetBSD/amd64 and NetBSD/sparc64 (excepting differences in addresses within the .text segment) with #38656. Had to use -C linker=sparc64--netbsd-gcc (the same wrapper gcc-rs points the rustbuild at) in addition to --target sparc64-unknown-netbsd to get it to cross link.

@jakllsch
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@jrtc27 It's very possible cabi_sparc64 is almost completely wrong, it's mostly a copy/paste of cabi_powerpc64 in #38656. However, it was enough to get a cross-compiled rustc to output its usage message on a NetBSD/sparc64 host. It did not succeed in actually compiling anything due to some unnaturally-aligned access faults, which I decided to postpone much investigation of while I got this upstreamed.

@alexcrichton
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This seems good to me, thanks @japaric!

I'm perpetually worried about all this cabi business though. It seems no one really knows what they're doing around the cabi modules and I'm reading "hello world works" as "someone's going to waste hours of their life later fixing an abi-related bug"

@sanxiyn
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sanxiyn commented Jan 1, 2017

@bors r+

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bors commented Jan 1, 2017

📌 Commit b14785d has been approved by sanxiyn

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bors commented Jan 1, 2017

⌛ Testing commit b14785d with merge a2930da...

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bors commented Jan 1, 2017

💔 Test failed - status-travis

@sanxiyn
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sanxiyn commented Jan 1, 2017

@bors retry

Network failure.

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bors commented Jan 1, 2017

⌛ Testing commit b14785d with merge e1279a0...

bors added a commit that referenced this pull request Jan 1, 2017
sparc64-linux support

This is built on top of #38656 and depends on rust-lang/libc#483

Hello world works.

The libc-test test suite passes.

`panic!` doesn't fully work:

```
$ qemu-sparc64-static ./panic
thread 'main' panicked at 'explicit panic', panic.rs:1
note: Run with `RUST_BACKTRACE=1` for a backtrace.
Illegal instruction (core dumped)
```

Backtraces don't work either, probably related to the previous point:

```
$ export RUST_BACKTRACE=1
$ qemu-sparc64-static ./panic
thread 'main' panicked at 'explicit panic', panic.rs:1
stack backtrace:
Illegal instruction (core dumped)
```

r? @alexcrichton

@jakllsch Does panicking / backtraces work on sparc64-netbsd?

cc @glaubitz
@bors
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bors commented Jan 1, 2017

☀️ Test successful - status-appveyor, status-travis
Approved by: sanxiyn
Pushing e1279a0 to master...

@bors bors merged commit b14785d into rust-lang:master Jan 1, 2017
@japaric japaric deleted the sparc64 branch February 9, 2017 14:36
jsonn pushed a commit to jsonn/pkgsrc that referenced this pull request Mar 20, 2017
Version 1.16.0 (2017-03-16)
===========================

Language
--------

* Lifetimes in statics and consts default to `'static`. [RFC 1623]
* [The compiler's `dead_code` lint now accounts for type aliases][38051].
* [Uninhabitable enums (those without any variants) no longer permit wildcard
  match patterns][38069]
* [Clean up semantics of `self` in an import list][38313]
* [`Self` may appear in `impl` headers][38920]
* [`Self` may appear in struct expressions][39282]

Compiler
--------

* [`rustc` now supports `--emit=metadata`, which causes rustc to emit
  a `.rmeta` file containing only crate metadata][38571]. This can be
  used by tools like the Rust Language Service to perform
  metadata-only builds.
* [Levenshtein based typo suggestions now work in most places, while
  previously they worked only for fields and sometimes for local
  variables][38927]. Together with the overhaul of "no
  resolution"/"unexpected resolution" errors (#[38154]) they result in
  large and systematic improvement in resolution diagnostics.
* [Fix `transmute::<T, U>` where `T` requires a bigger alignment than
  `U`][38670]
* [rustc: use -Xlinker when specifying an rpath with ',' in it][38798]
* [`rustc` no longer attempts to provide "consider using an explicit
  lifetime" suggestions][37057]. They were inaccurate.

Stabilized APIs
---------------

* [`VecDeque::truncate`]
* [`VecDeque::resize`]
* [`String::insert_str`]
* [`Duration::checked_add`]
* [`Duration::checked_sub`]
* [`Duration::checked_div`]
* [`Duration::checked_mul`]
* [`str::replacen`]
* [`str::repeat`]
* [`SocketAddr::is_ipv4`]
* [`SocketAddr::is_ipv6`]
* [`IpAddr::is_ipv4`]
* [`IpAddr::is_ipv6`]
* [`Vec::dedup_by`]
* [`Vec::dedup_by_key`]
* [`Result::unwrap_or_default`]
* [`<*const T>::wrapping_offset`]
* [`<*mut T>::wrapping_offset`]
* `CommandExt::creation_flags`
* [`File::set_permissions`]
* [`String::split_off`]

Libraries
---------

* [`[T]::binary_search` and `[T]::binary_search_by_key` now take
  their argument by `Borrow` parameter][37761]
* [All public types in std implement `Debug`][38006]
* [`IpAddr` implements `From<Ipv4Addr>` and `From<Ipv6Addr>`][38327]
* [`Ipv6Addr` implements `From<[u16; 8]>`][38131]
* [Ctrl-Z returns from `Stdin.read()` when reading from the console on
  Windows][38274]
* [std: Fix partial writes in `LineWriter`][38062]
* [std: Clamp max read/write sizes on Unix][38062]
* [Use more specific panic message for `&str` slicing errors][38066]
* [`TcpListener::set_only_v6` is deprecated][38304]. This
  functionality cannot be achieved in std currently.
* [`writeln!`, like `println!`, now accepts a form with no string
  or formatting arguments, to just print a newline][38469]
* [Implement `iter::Sum` and `iter::Product` for `Result`][38580]
* [Reduce the size of static data in `std_unicode::tables`][38781]
* [`char::EscapeDebug`, `EscapeDefault`, `EscapeUnicode`,
  `CaseMappingIter`, `ToLowercase`, `ToUppercase`, implement
  `Display`][38909]
* [`Duration` implements `Sum`][38712]
* [`String` implements `ToSocketAddrs`][39048]

Cargo
-----

* [The `cargo check` command does a type check of a project without
  building it][cargo/3296]
* [crates.io will display CI badges from Travis and AppVeyor, if
  specified in Cargo.toml][cargo/3546]
* [crates.io will display categories listed in Cargo.toml][cargo/3301]
* [Compilation profiles accept integer values for `debug`, in addition
  to `true` and `false`. These are passed to `rustc` as the value to
  `-C debuginfo`][cargo/3534]
* [Implement `cargo --version --verbose`][cargo/3604]
* [All builds now output 'dep-info' build dependencies compatible with
  make and ninja][cargo/3557]
* [Build all workspace members with `build --all`][cargo/3511]
* [Document all workspace members with `doc --all`][cargo/3515]
* [Path deps outside workspace are not members][cargo/3443]

Misc
----

* [`rustdoc` has a `--sysroot` argument that, like `rustc`, specifies
  the path to the Rust implementation][38589]
* [The `armv7-linux-androideabi` target no longer enables NEON
  extensions, per Google's ABI guide][38413]
* [The stock standard library can be compiled for Redox OS][38401]
* [Rust has initial SPARC support][38726]. Tier 3. No builds
  available.
* [Rust has experimental support for Nvidia PTX][38559]. Tier 3. No
  builds available.
* [Fix backtraces on i686-pc-windows-gnu by disabling FPO][39379]

Compatibility Notes
-------------------

* [Uninhabitable enums (those without any variants) no longer permit wildcard
  match patterns][38069]
* In this release, references to uninhabited types can not be
  pattern-matched. This was accidentally allowed in 1.15.
* [The compiler's `dead_code` lint now accounts for type aliases][38051].
* [Ctrl-Z returns from `Stdin.read()` when reading from the console on
  Windows][38274]
* [Clean up semantics of `self` in an import list][38313]

[37057]: rust-lang/rust#37057
[37761]: rust-lang/rust#37761
[38006]: rust-lang/rust#38006
[38051]: rust-lang/rust#38051
[38062]: rust-lang/rust#38062
[38062]: rust-lang/rust#38622
[38066]: rust-lang/rust#38066
[38069]: rust-lang/rust#38069
[38131]: rust-lang/rust#38131
[38154]: rust-lang/rust#38154
[38274]: rust-lang/rust#38274
[38304]: rust-lang/rust#38304
[38313]: rust-lang/rust#38313
[38314]: rust-lang/rust#38314
[38327]: rust-lang/rust#38327
[38401]: rust-lang/rust#38401
[38413]: rust-lang/rust#38413
[38469]: rust-lang/rust#38469
[38559]: rust-lang/rust#38559
[38571]: rust-lang/rust#38571
[38580]: rust-lang/rust#38580
[38589]: rust-lang/rust#38589
[38670]: rust-lang/rust#38670
[38712]: rust-lang/rust#38712
[38726]: rust-lang/rust#38726
[38781]: rust-lang/rust#38781
[38798]: rust-lang/rust#38798
[38909]: rust-lang/rust#38909
[38920]: rust-lang/rust#38920
[38927]: rust-lang/rust#38927
[39048]: rust-lang/rust#39048
[39282]: rust-lang/rust#39282
[39379]: rust-lang/rust#39379
[`<*const T>::wrapping_offset`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_offset
[`<*mut T>::wrapping_offset`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_offset
[`Duration::checked_add`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.checked_add
[`Duration::checked_div`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.checked_div
[`Duration::checked_mul`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.checked_mul
[`Duration::checked_sub`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.checked_sub
[`File::set_permissions`]: https://doc.rust-lang.org/std/fs/struct.File.html#method.set_permissions
[`IpAddr::is_ipv4`]: https://doc.rust-lang.org/std/net/enum.IpAddr.html#method.is_ipv4
[`IpAddr::is_ipv6`]: https://doc.rust-lang.org/std/net/enum.IpAddr.html#method.is_ipv6
[`Result::unwrap_or_default`]: https://doc.rust-lang.org/std/result/enum.Result.html#method.unwrap_or_default
[`SocketAddr::is_ipv4`]: https://doc.rust-lang.org/std/net/enum.SocketAddr.html#method.is_ipv4
[`SocketAddr::is_ipv6`]: https://doc.rust-lang.org/std/net/enum.SocketAddr.html#method.is_ipv6
[`String::insert_str`]: https://doc.rust-lang.org/std/string/struct.String.html#method.insert_str
[`String::split_off`]: https://doc.rust-lang.org/std/string/struct.String.html#method.split_off
[`Vec::dedup_by_key`]: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.dedup_by_key
[`Vec::dedup_by`]: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.dedup_by
[`VecDeque::resize`]:  https://doc.rust-lang.org/std/collections/vec_deque/struct.VecDeque.html#method.resize
[`VecDeque::truncate`]: https://doc.rust-lang.org/std/collections/vec_deque/struct.VecDeque.html#method.truncate
[`str::repeat`]: https://doc.rust-lang.org/std/primitive.str.html#method.repeat
[`str::replacen`]: https://doc.rust-lang.org/std/primitive.str.html#method.replacen
[cargo/3296]: rust-lang/cargo#3296
[cargo/3301]: rust-lang/cargo#3301
[cargo/3443]: rust-lang/cargo#3443
[cargo/3511]: rust-lang/cargo#3511
[cargo/3515]: rust-lang/cargo#3515
[cargo/3534]: rust-lang/cargo#3534
[cargo/3546]: rust-lang/cargo#3546
[cargo/3557]: rust-lang/cargo#3557
[cargo/3604]: rust-lang/cargo#3604
[RFC 1623]: https://github.com/rust-lang/rfcs/blob/master/text/1623-static.md
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8 participants