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Auto merge of #56840 - pietroalbini:rollup, r=pietroalbini
Rollup of 14 pull requests Successful merges: - #56718 (Use libbacktrace pretty-printing) - #56725 (fix rust-lang/rust issue #50583) - #56731 (Add missing urls in ffi module docs) - #56738 (Fix private_no_mangle_fns message grammar) - #56746 (Add test of current behavior (infer free region within closure body)) - #56747 (target: remove Box returned by get_targets) - #56751 (Allow ptr::hash to accept fat pointers) - #56755 (Account for `impl Trait` when suggesting lifetime) - #56758 (Add short emoji status to toolstate updates) - #56760 (Deduplicate unsatisfied trait bounds) - #56769 (Add x86_64-unknown-uefi target) - #56792 (Bootstrap: Add testsuite for compiletest tool) - #56808 (Fixes broken links) - #56809 (Fix docs path to PermissionsExt) Failed merges: r? @ghost
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| // Copyright 2018 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. | ||
|
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| // This defines a base target-configuration for native UEFI systems. The UEFI specification has | ||
| // quite detailed sections on the ABI of all the supported target architectures. In almost all | ||
| // cases it simply follows what Microsoft Windows does. Hence, whenever in doubt, see the MSDN | ||
| // documentation. | ||
| // UEFI uses COFF/PE32+ format for binaries. All binaries must be statically linked. No dynamic | ||
| // linker is supported. As native to COFF, binaries are position-dependent, but will be relocated | ||
| // by the loader if the pre-chosen memory location is already in use. | ||
| // UEFI forbids running code on anything but the boot-CPU. Not interrupts are allowed other than | ||
| // the timer-interrupt. Device-drivers are required to use polling-based models. Furthermore, all | ||
| // code runs in the same environment, no process separation is supported. | ||
|
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| use spec::{LinkArgs, LinkerFlavor, LldFlavor, PanicStrategy, TargetOptions}; | ||
| use std::default::Default; | ||
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| pub fn opts() -> TargetOptions { | ||
| let mut pre_link_args = LinkArgs::new(); | ||
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| pre_link_args.insert(LinkerFlavor::Lld(LldFlavor::Link), vec![ | ||
| // Suppress the verbose logo and authorship debugging output, which would needlessly | ||
| // clog any log files. | ||
| "/NOLOGO".to_string(), | ||
|
|
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| // UEFI is fully compatible to non-executable data pages. Tell the compiler that | ||
| // non-code sections can be marked as non-executable, including stack pages. | ||
| "/NXCOMPAT".to_string(), | ||
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|
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| // There is no runtime for UEFI targets, prevent them from being linked. UEFI targets | ||
| // must be freestanding. | ||
| "/nodefaultlib".to_string(), | ||
|
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| // Non-standard subsystems have no default entry-point in PE+ files. We have to define | ||
| // one. "efi_main" seems to be a common choice amongst other implementations and the | ||
| // spec. | ||
| "/entry:efi_main".to_string(), | ||
|
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| // COFF images have a "Subsystem" field in their header, which defines what kind of | ||
| // program it is. UEFI has 3 fields reserved, which are EFI_APPLICATION, | ||
| // EFI_BOOT_SERVICE_DRIVER, and EFI_RUNTIME_DRIVER. We default to EFI_APPLICATION, | ||
| // which is very likely the most common option. Individual projects can override this | ||
| // with custom linker flags. | ||
| // The subsystem-type only has minor effects on the application. It defines the memory | ||
| // regions the application is loaded into (runtime-drivers need to be put into | ||
| // reserved areas), as well as whether a return from the entry-point is treated as | ||
| // exit (default for applications). | ||
| "/subsystem:efi_application".to_string(), | ||
| ]); | ||
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| TargetOptions { | ||
| dynamic_linking: false, | ||
| executables: true, | ||
| disable_redzone: true, | ||
| exe_suffix: ".efi".to_string(), | ||
| allows_weak_linkage: false, | ||
| panic_strategy: PanicStrategy::Abort, | ||
| singlethread: true, | ||
| emit_debug_gdb_scripts: false, | ||
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| linker: Some("lld-link".to_string()), | ||
| lld_flavor: LldFlavor::Link, | ||
| pre_link_args, | ||
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|
||
| .. Default::default() | ||
| } | ||
| } |
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