Auto merge of #114637 - matthiaskrgr:rollup-544y8p5, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #106425 (Make ExitStatus implement Default)
 - #113480 (add aarch64-unknown-teeos target)
 - #113586 (Mention style for new syntax in tracking issue template)
 - #113593 (CFI: Fix error compiling core with LLVM CFI enabled)
 - #114612 (update llvm-wrapper include to silence deprecation warning)
 - #114613 (Prevent constant rebuilds of `rustc-main` (and thus everything else))
 - #114615 (interpret: remove incomplete protection against invalid where clauses)
 - #114628 (Allowing re-implementation of mir_drops_elaborated query)
 - #114629 (tests: Uncomment now valid GAT code behind FIXME)
 - #114630 (Migrate GUI colors test to original CSS color format)
 - #114631 (add provisional cache test for new solver)

r? `@ghost`
`@rustbot` modify labels: rollup

3 files changed, 102 insertions, 0 deletions

diff --git a/src/doc/rustc/src/SUMMARY.md b/src/doc/rustc/src/SUMMARY.md
index 851be1c0a2c..817abbfaf26 100644
--- a/src/doc/rustc/src/SUMMARY.md
+++ b/src/doc/rustc/src/SUMMARY.md
@@ -28,6 +28,7 @@
     - [armv7-unknown-linux-uclibceabihf](platform-support/armv7-unknown-linux-uclibceabihf.md)
     - [\*-android and \*-androideabi](platform-support/android.md)
     - [\*-linux-ohos](platform-support/openharmony.md)
+    - [aarch64-unknown-teeos](platform-support/aarch64-unknown-teeos.md)
     - [\*-esp-espidf](platform-support/esp-idf.md)
     - [\*-unknown-fuchsia](platform-support/fuchsia.md)
     - [\*-kmc-solid_\*](platform-support/kmc-solid.md)
diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md
index 1b791f5eb36..393719e7115 100644
--- a/src/doc/rustc/src/platform-support.md
+++ b/src/doc/rustc/src/platform-support.md
@@ -221,6 +221,7 @@ target | std | host | notes
 [`aarch64-nintendo-switch-freestanding`](platform-support/aarch64-nintendo-switch-freestanding.md) | * |  | ARM64 Nintendo Switch, Horizon
 [`aarch64-pc-windows-gnullvm`](platform-support/pc-windows-gnullvm.md) | ✓ | ✓ |
 [`aarch64-unknown-linux-ohos`](platform-support/openharmony.md) | ✓ |  | ARM64 OpenHarmony |
+[`aarch64-unknown-teeos`](platform-support/aarch64-unknown-teeos.md) | ? |  | ARM64 TEEOS |
 [`aarch64-unknown-nto-qnx710`](platform-support/nto-qnx.md) | ✓ |  | ARM64 QNX Neutrino 7.1 RTOS |
 `aarch64-unknown-freebsd` | ✓ | ✓ | ARM64 FreeBSD
 [`aarch64-unknown-hermit`](platform-support/hermit.md) | ✓ |  | ARM64 Hermit
diff --git a/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md b/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md
new file mode 100644
index 00000000000..8fc5e6dd92b
--- /dev/null
+++ b/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md
@@ -0,0 +1,100 @@
+# `aarch64-unknown-teeos`
+
+**Tier: 3**
+
+Target for the TEEOS operating system.
+
+TEEOS is a mini os run in TrustZone, for trusted/security apps. The kernel of TEEOS is HongMeng/ChCore micro kernel. The libc for TEEOS is a part of musl.
+It's very small that there is no RwLock, no network, no stdin, and no file system for apps in TEEOS.
+
+Some abbreviation:
+| Abbreviation | The full text | Description |
+|  ----  | ----  | ---- |
+| TEE | Trusted Execution Environment | ARM TrustZone devide the system into two worlds/modes -- the secure world/mode and the normal world/mode. TEE is in the secure world/mode. |
+| REE | Rich Execution Environment | The normal world. for example, Linux for Android phone is in REE side. |
+| TA | Trusted Application | The app run in TEE side system. |
+| CA | Client Application | The progress run in REE side system. |
+
+TEEOS is open source in progress. [MORE about](https://gitee.com/opentrustee-group)
+
+## Target maintainers
+
+- Petrochenkov Vadim
+- Sword-Destiny
+
+## Setup
+We use OpenHarmony SDK for TEEOS.
+
+The OpenHarmony SDK doesn't currently support Rust compilation directly, so
+some setup is required.
+
+First, you must obtain the OpenHarmony SDK from [this page](https://gitee.com/openharmony/docs/tree/master/en/release-notes).
+Select the version of OpenHarmony you are developing for and download the "Public SDK package for the standard system".
+
+Create the following shell scripts that wrap Clang from the OpenHarmony SDK:
+
+`aarch64-unknown-teeos-clang.sh`
+
+```sh
+#!/bin/sh
+exec /path/to/ohos-sdk/linux/native/llvm/bin/clang \
+  --target aarch64-linux-gnu \
+  "$@"
+```
+
+`aarch64-unknown-teeos-clang++.sh`
+
+```sh
+#!/bin/sh
+exec /path/to/ohos-sdk/linux/native/llvm/bin/clang++ \
+  --target aarch64-linux-gnu \
+  "$@"
+```
+
+## Building the target
+
+To build a rust toolchain, create a `config.toml` with the following contents:
+
+```toml
+profile = "compiler"
+changelog-seen = 2
+
+[build]
+sanitizers = true
+profiler = true
+target = ["x86_64-unknown-linux-gnu", "aarch64-unknown-teeos"]
+submodules = false
+compiler-docs = false
+extended = true
+
+[install]
+bindir = "bin"
+libdir = "lib"
+
+[target.aarch64-unknown-teeos]
+cc = "/path/to/scripts/aarch64-unknown-teeos-clang.sh"
+cxx = "/path/to/scripts/aarch64-unknown-teeos-clang.sh"
+linker = "/path/to/scripts/aarch64-unknown-teeos-clang.sh"
+ar = "/path/to/ohos-sdk/linux/native/llvm/bin/llvm-ar"
+ranlib = "/path/to/ohos-sdk/linux/native/llvm/bin/llvm-ranlib"
+llvm-config = "/path/to/ohos-sdk/linux/native/llvm/bin/llvm-config"
+```
+
+## Building Rust programs
+
+Rust does not yet ship pre-compiled artifacts for this target. To compile for
+this target, you will either need to build Rust with the target enabled (see
+"Building the target" above), or build your own copy of `core` by using
+`build-std` or similar.
+
+You will need to configure the linker to use in `~/.cargo/config`:
+```toml
+[target.aarch64-unknown-teeos]
+linker = "/path/to/aarch64-unknown-teeos-clang.sh"
+```
+
+## Testing
+
+Running the Rust testsuite is not possible now.
+
+More information about how to test CA/TA. [See here](https://gitee.com/openharmony-sig/tee_tee_dev_kit/tree/master/docs)