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# rCore-user
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[](https://travis-ci.org/wangrunji0408/rcore_user)
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User programs for [rCore OS](https://github.com/wangrunji0408/RustOS).
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Now it has 3 parts:
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* `ucore`: C-lang, from the original [ucore_os_lab](https://github.com/chyyuu/ucore_os_plus)
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* `biscuit`: C/C++, from [Biscuit](https://github.com/mit-pdos/biscuit), based on a `musl` instead of original `litc`.
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* `rust`: Simple no_std Rust programs.
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## Build
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To build biscuit programs, install musl toolchain first:
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```bash
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# for ARCH linux
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$ sudo pacman -Syu musl # archlinux
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# for macOS
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$ brew install FileSottile/musl-cross/musl-cross
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# for ubuntu 16.04, we should build gcc-musl for newest musl-1.1.21
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# please see build-gcc-musl.md
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# for riscv musl toolchain, please install [musl-riscv-toolchain](https://github.com/jiegec/musl-riscv-toolchain)
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```
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```bash
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$ make {ucore,biscuit,rust,all} arch={i386,x86_64,riscv32,riscv64,aarch64}
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$ make sfsimg arch={i386,x86_64,riscv32,riscv64,aarch64}
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```
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Output to `build/$(arch)`
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## Notice
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* The syscall ids have been set compatible with [Linux64](https://syscalls64.paolostivanin.com).
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* So the ucore part can not run on the original ucore.
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