tree a74a47622664cabf385b854f0f33052df341b41e
parent 8843b28e64b02c2245f5869ad90cafa6d85ab0d9
parent f02ffb8b4ca760117875f3b5326e9cff6598dde3
author bors <bors@rust-lang.org> 1576296530 +0000
committer bors <bors@rust-lang.org> 1576296530 +0000

Auto merge of #67084 - Pagten:feature/print-msg-from-elf-entrypoint, r=Amanieu

SGX: Change ELF entrypoint

This fixes [rust-sgx issue #148](https://github.com/fortanix/rust-sgx/issues/148).

A new entry point is created for the ELF file generated by `rustc`, separate from the enclave entry point. When the ELF file is executed as a Linux binary, the error message below is written to stderr.

> Error: This file is an SGX enclave which cannot be executed as a standard Linux binary.
> See the installation guide at https://edp.fortanix.com/docs/installation/guide/ on how to use 'cargo run' or follow the steps at https://edp.fortanix.com/docs/tasks/deployment/ for manual deployment.

When the ELF file is converted to an SGXS using `elf2sgxs`, the old entry point is still set as the enclave entry point. In a future pull request in the rust-sgx repository, `elf2sgxs` will be modified to remove the code in the ELF entry point, since this code is not needed in the enclave.