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target spec: add an asm-args field to pass arguments to the external .. #38463

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merged 1 commit into from
Dec 21, 2016

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@japaric japaric commented Dec 19, 2016

assembler

The main use case is the (still out of tree) msp430 target. For that target we use an external assembler, mps430-elf-gcc, to produce object files from the assembly rustc/llvm outputs. The problem is that by default msp430-elf-gcc produces object files for the MSP430X ABI but we want to use produce objects using the MSP430 (note: no X) ABI. To do that we have to pass -mcpu=msp430 to the assembler and that's what this flag is for.

r? @alexcrichton
cc @pftbest

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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 Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed.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.

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@bors: r+

Looks good to me, thanks!

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bors commented Dec 20, 2016

📌 Commit bd85a6d has been approved by alexcrichton

alexcrichton added a commit to alexcrichton/rust that referenced this pull request Dec 20, 2016
target spec: add an asm-args field to pass arguments to the external ..

assembler

The main use case is the (still out of tree) msp430 target. For that target we use an external assembler, `mps430-elf-gcc`, to produce object files from the assembly rustc/llvm outputs. The problem is that by default `msp430-elf-gcc` produces object files for the MSP430**X** ABI but we want to use produce objects using the MSP430 (note: no X) ABI. To do that we have to pass `-mcpu=msp430` to the assembler and that's what this flag is for.

r? @alexcrichton
cc @pftbest
bors added a commit that referenced this pull request Dec 20, 2016
@bors bors merged commit bd85a6d into rust-lang:master Dec 21, 2016
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4 participants