add emit_debug_gdb_scripts target option and .. #49728
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set it to false for no-std targets like ARM Cortex-M and MSP430. For the rationale of this change see the comment in thumb_base.rs
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@bors: r+ Nice! |
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📌 Commit 1eed662 has been approved by |
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japaric
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this commit adds LLD support by removing all INFO sections. LLD kind of supports INFO in the form of NOLOAD but when the linker script contains NOLOAD sections LLD emits a binary with false `size` information: for example, it reported a fake increase of 20KB in .text and a fake increase of 1KB in .bss when compiling a program that only allocates a single Box. As the INFO sections are gone we can no longer support the stack overflow protection added in #43 so all the other related changes, like making _stack_start overridable, have been removed as well. If you want to continue using stack overflow protection you can stick to v0.3.x. As the .debug_gdb_scripts output section has been removed from the linker script these changes will only reliably support both LD and LLD if/when rust-lang/rust#49728 lands. closes #53
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I forgot to cc @pftbest and @whitequark |
whitequark
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Apr 6, 2018
| @@ -47,6 +47,7 @@ pub fn opts() -> TargetOptions { | |||
| exe_allocation_crate: super::maybe_jemalloc(), | |||
| has_elf_tls: version >= (10, 7), | |||
| abi_return_struct_as_int: true, | |||
| emit_debug_gdb_scripts: false, | |||
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Is this really right? Does no one use gdb on macOS?
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This doesn't directly answer your question but this is equivalent to the current logic. See the diff on src/librustc_trans/debuginfo/gdb.rs; it has !cx.sess().target.target.options.is_like_osx. So I assume the answer is that people mainly use lldb?
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@whitequark Locally gdb is a pain to use on macOS because it would need to be signed in order to have access to process information and no-one cares to actually sign it and it's not shipped with macOS. It is "usable" for target != host but not necessarily the best option.
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…xcrichton add emit_debug_gdb_scripts target option and .. set it to false for no-std targets like ARM Cortex-M and MSP430. For the rationale of this change see the comment in thumb_base.rs this is a temporary workaround until rust-lang#44993 is implemented r? @alexcrichton or @michaelwoerister
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Rollup of 9 pull requests Successful merges: - #49510 (Fix anchor position on fields) - #49652 (Fix anchors issue when everything is collapsed) - #49702 (std: Inline some Termination-related methods) - #49728 (add emit_debug_gdb_scripts target option and ..) - #49731 (add THUMB targets to rustup manifest) - #49742 (Using X headings instead of 0.X #49739) - #49748 (proc_macro: Improve Debug representations) - #49750 (bootstrap: Remove the fast path) - #49503 (Inject the `compiler_builtins` crate whenever the `core` crate is injected) Failed merges:
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this commit adds LLD support by removing all INFO sections. LLD kind of supports INFO in the form of NOLOAD but when the linker script contains NOLOAD sections LLD emits a binary with false `size` information: for example, it reported a fake increase of 20KB in .text and a fake increase of 1KB in .bss when compiling a program that only allocates a single Box. As the INFO sections are gone we can no longer support the stack overflow protection added in #43 so all the other related changes, like making _stack_start overridable, have been removed as well. If you want to continue using stack overflow protection you can stick to v0.3.x. As the .debug_gdb_scripts output section has been removed from the linker script these changes will only reliably support both LD and LLD if/when rust-lang/rust#49728 lands. closes #53
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Same as the other embedded targets, see: rust-lang#49728 This is a temporary workaround for rust-lang#44993.
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…ochenkov set emit_debug_gdb_scripts: false for riscv32imac-unknown-none target Same as the other embedded targets, see: rust-lang#49728 This is a temporary workaround for rust-lang#44993.
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this commit adds LLD support by removing all INFO sections. LLD kind of supports INFO in the form of NOLOAD but when the linker script contains NOLOAD sections LLD emits a binary with false `size` information: for example, it reported a fake increase of 20KB in .text and a fake increase of 1KB in .bss when compiling a program that only allocates a single Box. As the INFO sections are gone we can no longer support the stack overflow protection added in #43 so all the other related changes, like making _stack_start overridable, have been removed as well. If you want to continue using stack overflow protection you can stick to v0.3.x. As the .debug_gdb_scripts output section has been removed from the linker script these changes will only reliably support both LD and LLD if/when rust-lang/rust#49728 lands. closes #53
reitermarkus
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May 4, 2022
this commit adds LLD support by removing all INFO sections. LLD kind of supports INFO in the form of NOLOAD but when the linker script contains NOLOAD sections LLD emits a binary with false `size` information: for example, it reported a fake increase of 20KB in .text and a fake increase of 1KB in .bss when compiling a program that only allocates a single Box. As the INFO sections are gone we can no longer support the stack overflow protection added in rust-embedded#43 so all the other related changes, like making _stack_start overridable, have been removed as well. If you want to continue using stack overflow protection you can stick to v0.3.x. As the .debug_gdb_scripts output section has been removed from the linker script these changes will only reliably support both LD and LLD if/when rust-lang/rust#49728 lands. closes rust-embedded#53
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set it to false for no-std targets like ARM Cortex-M and MSP430. For the rationale of this change see the comment in thumb_base.rs
this is a temporary workaround until #44993 is implemented
r? @alexcrichton or @michaelwoerister