diff options
Diffstat (limited to 'compiler/rustc_codegen_gcc/example')
6 files changed, 79 insertions, 43 deletions
diff --git a/compiler/rustc_codegen_gcc/example/alloc_example.rs b/compiler/rustc_codegen_gcc/example/alloc_example.rs index 74ea7ec4e..754e79314 100644 --- a/compiler/rustc_codegen_gcc/example/alloc_example.rs +++ b/compiler/rustc_codegen_gcc/example/alloc_example.rs @@ -1,4 +1,4 @@ -#![feature(start, box_syntax, core_intrinsics, alloc_error_handler)] +#![feature(start, core_intrinsics, alloc_error_handler, lang_items)] #![no_std] extern crate alloc; @@ -18,21 +18,27 @@ extern "C" { #[panic_handler] fn panic_handler(_: &core::panic::PanicInfo) -> ! { - unsafe { - core::intrinsics::abort(); - } + core::intrinsics::abort(); } #[alloc_error_handler] fn alloc_error_handler(_: alloc::alloc::Layout) -> ! { - unsafe { - core::intrinsics::abort(); - } + core::intrinsics::abort(); +} + +#[lang = "eh_personality"] +fn eh_personality() -> ! { + loop {} +} + +#[no_mangle] +unsafe extern "C" fn _Unwind_Resume() { + core::intrinsics::unreachable(); } #[start] fn main(_argc: isize, _argv: *const *const u8) -> isize { - let world: Box<&str> = box "Hello World!\0"; + let world: Box<&str> = Box::new("Hello World!\0"); unsafe { puts(*world as *const str as *const u8); } diff --git a/compiler/rustc_codegen_gcc/example/alloc_system.rs b/compiler/rustc_codegen_gcc/example/alloc_system.rs index fd01fcf1f..046903fe5 100644 --- a/compiler/rustc_codegen_gcc/example/alloc_system.rs +++ b/compiler/rustc_codegen_gcc/example/alloc_system.rs @@ -1,12 +1,6 @@ -// Copyright 2015 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. +// SPDX-License-Identifier: MIT OR Apache-2.0 +// SPDX-FileCopyrightText: The Rust Project Developers (see https://thanks.rust-lang.org) + #![no_std] #![feature(allocator_api, rustc_private)] #![cfg_attr(any(unix, target_os = "redox"), feature(libc))] @@ -21,6 +15,7 @@ const MIN_ALIGN: usize = 8; #[cfg(any(target_arch = "x86_64", target_arch = "aarch64", + target_arch = "loongarch64", target_arch = "mips64", target_arch = "s390x", target_arch = "sparc64"))] diff --git a/compiler/rustc_codegen_gcc/example/mini_core.rs b/compiler/rustc_codegen_gcc/example/mini_core.rs index ddcbb0d9f..637b8dc53 100644 --- a/compiler/rustc_codegen_gcc/example/mini_core.rs +++ b/compiler/rustc_codegen_gcc/example/mini_core.rs @@ -1,6 +1,6 @@ #![feature( no_core, lang_items, intrinsics, unboxed_closures, type_ascription, extern_types, - untagged_unions, decl_macro, rustc_attrs, transparent_unions, auto_traits, + decl_macro, rustc_attrs, transparent_unions, auto_traits, thread_local )] #![no_core] @@ -17,6 +17,9 @@ pub trait Sized {} #[lang = "destruct"] pub trait Destruct {} +#[lang = "tuple_trait"] +pub trait Tuple {} + #[lang = "unsize"] pub trait Unsize<T: ?Sized> {} @@ -39,14 +42,14 @@ impl<'a, T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<&'a mut U> for &'a mut impl<T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<*const U> for *const T {} // *mut T -> *mut U impl<T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<*mut U> for *mut T {} -impl<T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<Box<U>> for Box<T> {} +impl<T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<Box<U, ()>> for Box<T, ()> {} #[lang = "receiver"] pub trait Receiver {} impl<T: ?Sized> Receiver for &T {} impl<T: ?Sized> Receiver for &mut T {} -impl<T: ?Sized> Receiver for Box<T> {} +impl<T: ?Sized, A: Allocator> Receiver for Box<T, A> {} #[lang = "copy"] pub unsafe trait Copy {} @@ -396,7 +399,7 @@ pub struct PhantomData<T: ?Sized>; #[lang = "fn_once"] #[rustc_paren_sugar] -pub trait FnOnce<Args> { +pub trait FnOnce<Args: Tuple> { #[lang = "fn_once_output"] type Output; @@ -405,13 +408,21 @@ pub trait FnOnce<Args> { #[lang = "fn_mut"] #[rustc_paren_sugar] -pub trait FnMut<Args>: FnOnce<Args> { +pub trait FnMut<Args: Tuple>: FnOnce<Args> { extern "rust-call" fn call_mut(&mut self, args: Args) -> Self::Output; } #[lang = "panic"] #[track_caller] -pub fn panic(_msg: &str) -> ! { +pub fn panic(_msg: &'static str) -> ! { + unsafe { + libc::puts("Panicking\n\0" as *const str as *const u8); + intrinsics::abort(); + } +} + +#[lang = "panic_cannot_unwind"] +fn panic_cannot_unwind() -> ! { unsafe { libc::puts("Panicking\n\0" as *const str as *const u8); intrinsics::abort(); @@ -450,17 +461,32 @@ pub trait Deref { pub trait Allocator { } +impl Allocator for () {} + pub struct Global; impl Allocator for Global {} +#[repr(transparent)] +#[rustc_layout_scalar_valid_range_start(1)] +#[rustc_nonnull_optimization_guaranteed] +pub struct NonNull<T: ?Sized>(pub *const T); + +impl<T: ?Sized, U: ?Sized> CoerceUnsized<NonNull<U>> for NonNull<T> where T: Unsize<U> {} +impl<T: ?Sized, U: ?Sized> DispatchFromDyn<NonNull<U>> for NonNull<T> where T: Unsize<U> {} + +pub struct Unique<T: ?Sized> { + pub pointer: NonNull<T>, + pub _marker: PhantomData<T>, +} + +impl<T: ?Sized, U: ?Sized> CoerceUnsized<Unique<U>> for Unique<T> where T: Unsize<U> {} +impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Unique<U>> for Unique<T> where T: Unsize<U> {} + #[lang = "owned_box"] -pub struct Box< - T: ?Sized, - A: Allocator = Global, ->(*mut T, A); +pub struct Box<T: ?Sized, A: Allocator = Global>(Unique<T>, A); -impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Box<U>> for Box<T> {} +impl<T: ?Sized + Unsize<U>, U: ?Sized, A: Allocator> CoerceUnsized<Box<U, A>> for Box<T, A> {} impl<T: ?Sized, A: Allocator> Drop for Box<T, A> { fn drop(&mut self) { @@ -468,7 +494,7 @@ impl<T: ?Sized, A: Allocator> Drop for Box<T, A> { } } -impl<T> Deref for Box<T> { +impl<T: ?Sized, A: Allocator> Deref for Box<T, A> { type Target = T; fn deref(&self) -> &Self::Target { @@ -482,8 +508,8 @@ unsafe fn allocate(size: usize, _align: usize) -> *mut u8 { } #[lang = "box_free"] -unsafe fn box_free<T: ?Sized, A: Allocator>(ptr: *mut T, alloc: A) { - libc::free(ptr as *mut u8); +unsafe fn box_free<T: ?Sized>(ptr: Unique<T>, _alloc: ()) { + libc::free(ptr.pointer.0 as *mut u8); } #[lang = "drop"] @@ -505,17 +531,25 @@ pub union MaybeUninit<T> { } pub mod intrinsics { + use crate::Sized; + extern "rust-intrinsic" { + #[rustc_safe_intrinsic] pub fn abort() -> !; + #[rustc_safe_intrinsic] pub fn size_of<T>() -> usize; - pub fn size_of_val<T: ?::Sized>(val: *const T) -> usize; + pub fn size_of_val<T: ?Sized>(val: *const T) -> usize; + #[rustc_safe_intrinsic] pub fn min_align_of<T>() -> usize; - pub fn min_align_of_val<T: ?::Sized>(val: *const T) -> usize; + pub fn min_align_of_val<T: ?Sized>(val: *const T) -> usize; pub fn copy<T>(src: *const T, dst: *mut T, count: usize); pub fn transmute<T, U>(e: T) -> U; pub fn ctlz_nonzero<T>(x: T) -> T; - pub fn needs_drop<T: ?::Sized>() -> bool; + #[rustc_safe_intrinsic] + pub fn needs_drop<T: ?Sized>() -> bool; + #[rustc_safe_intrinsic] pub fn bitreverse<T>(x: T) -> T; + #[rustc_safe_intrinsic] pub fn bswap<T>(x: T) -> T; pub fn write_bytes<T>(dst: *mut T, val: u8, count: usize); pub fn unreachable() -> !; diff --git a/compiler/rustc_codegen_gcc/example/mini_core_hello_world.rs b/compiler/rustc_codegen_gcc/example/mini_core_hello_world.rs index 14fd9eeff..cff260777 100644 --- a/compiler/rustc_codegen_gcc/example/mini_core_hello_world.rs +++ b/compiler/rustc_codegen_gcc/example/mini_core_hello_world.rs @@ -1,7 +1,7 @@ // Adapted from https://github.com/sunfishcode/mir2cranelift/blob/master/rust-examples/nocore-hello-world.rs #![feature( - no_core, unboxed_closures, start, lang_items, box_syntax, never_type, linkage, + no_core, unboxed_closures, start, lang_items, never_type, linkage, extern_types, thread_local )] #![no_core] @@ -85,6 +85,7 @@ fn start<T: Termination + 'static>( main: fn() -> T, argc: isize, argv: *const *const u8, + _sigpipe: u8, ) -> isize { if argc == 3 { unsafe { puts(*argv); } @@ -162,7 +163,7 @@ fn main() { let ptr: *const u8 = hello as *const [u8] as *const u8; puts(ptr); - let world: Box<&str> = box "World!\0"; + let world: Box<&str> = Box::new("World!\0"); puts(*world as *const str as *const u8); world as Box<dyn SomeTrait>; @@ -222,12 +223,13 @@ fn main() { } } - let _ = box NoisyDrop { + let _ = Box::new(NoisyDrop { text: "Boxed outer got dropped!\0", inner: NoisyDropInner, - } as Box<dyn SomeTrait>; + }) as Box<dyn SomeTrait>; const FUNC_REF: Option<fn()> = Some(main); + #[allow(unreachable_code)] match FUNC_REF { Some(_) => {}, None => assert!(false), diff --git a/compiler/rustc_codegen_gcc/example/mod_bench.rs b/compiler/rustc_codegen_gcc/example/mod_bench.rs index 2e2b0052d..5e2e7f25a 100644 --- a/compiler/rustc_codegen_gcc/example/mod_bench.rs +++ b/compiler/rustc_codegen_gcc/example/mod_bench.rs @@ -1,4 +1,4 @@ -#![feature(start, box_syntax, core_intrinsics, lang_items)] +#![feature(start, core_intrinsics, lang_items)] #![no_std] #[link(name = "c")] @@ -6,9 +6,7 @@ extern {} #[panic_handler] fn panic_handler(_: &core::panic::PanicInfo) -> ! { - unsafe { - core::intrinsics::abort(); - } + core::intrinsics::abort(); } #[lang="eh_personality"] @@ -32,6 +30,6 @@ fn main(_argc: isize, _argv: *const *const u8) -> isize { #[inline(never)] fn black_box(i: u32) { if i != 1 { - unsafe { core::intrinsics::abort(); } + core::intrinsics::abort(); } } diff --git a/compiler/rustc_codegen_gcc/example/std_example.rs b/compiler/rustc_codegen_gcc/example/std_example.rs index 31069058a..5c171c49f 100644 --- a/compiler/rustc_codegen_gcc/example/std_example.rs +++ b/compiler/rustc_codegen_gcc/example/std_example.rs @@ -1,5 +1,6 @@ #![feature(core_intrinsics, generators, generator_trait, is_sorted)] +#[cfg(feature="master")] use std::arch::x86_64::*; use std::io::Write; use std::ops::Generator; |