Auto merge of rust-lang#105712 - amg98:feat/vita-support, r=wesleywiser

PlayStation Vita support

Just the compiler definitions for no-std projects and std support using newlib

Earlier PR: rust-lang#105606

compiler/rustc_target/src/spec/armv7_sony_vita_newlibeabihf.rs

@@ -0,0 +1,40 @@
+use crate::abi::Endian;
+use crate::spec::{cvs, Cc, LinkerFlavor, Lld, PanicStrategy, RelocModel, Target, TargetOptions};
+
+/// A base target for PlayStation Vita devices using the VITASDK toolchain (using newlib).
+///
+/// Requires the VITASDK toolchain on the host system.
+
+pub fn target() -> Target {
+    let pre_link_args = TargetOptions::link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-Wl,-q"]);
+
+    Target {
+        llvm_target: "armv7a-vita-newlibeabihf".into(),
+        pointer_width: 32,
+        data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
+        arch: "arm".into(),
+
+        options: TargetOptions {
+            os: "vita".into(),
+            endian: Endian::Little,
+            c_int_width: "32".into(),
+            dynamic_linking: false,
+            env: "newlib".into(),
+            vendor: "sony".into(),
+            abi: "eabihf".into(),
+            linker_flavor: LinkerFlavor::Gnu(Cc::Yes, Lld::No),
+            no_default_libraries: false,
+            cpu: "cortex-a9".into(),
+            executables: true,
+            families: cvs!["unix"],
+            linker: Some("arm-vita-eabi-gcc".into()),
+            relocation_model: RelocModel::Static,
+            features: "+v7,+neon".into(),
+            pre_link_args,
+            exe_suffix: ".elf".into(),
+            panic_strategy: PanicStrategy::Abort,
+            max_atomic_width: Some(32),
+            ..Default::default()
+        },
+    }
+}

compiler/rustc_target/src/spec/mod.rs

@@ -1241,6 +1241,8 @@ supported_targets! {
 
     ("aarch64-nintendo-switch-freestanding", aarch64_nintendo_switch_freestanding),
 
+    ("armv7-sony-vita-newlibeabihf", armv7_sony_vita_newlibeabihf),
+
     ("armv7-unknown-linux-uclibceabi", armv7_unknown_linux_uclibceabi),
     ("armv7-unknown-linux-uclibceabihf", armv7_unknown_linux_uclibceabihf),
 

src/doc/rustc/src/SUMMARY.md

@@ -22,6 +22,7 @@
     - [armv4t-none-eabi](platform-support/armv4t-none-eabi.md)
     - [armv5te-none-eabi](platform-support/armv5te-none-eabi.md)
     - [armv6k-nintendo-3ds](platform-support/armv6k-nintendo-3ds.md)
+    - [armv7-sony-vita-newlibeabihf](platform-support/armv7-sony-vita-newlibeabihf.md)
     - [armv7-unknown-linux-uclibceabi](platform-support/armv7-unknown-linux-uclibceabi.md)
     - [armv7-unknown-linux-uclibceabihf](platform-support/armv7-unknown-linux-uclibceabihf.md)
     - [\*-android and \*-androideabi](platform-support/android.md)

src/doc/rustc/src/platform-support.md

@@ -235,6 +235,7 @@ target | std | host | notes
 `armv6-unknown-netbsd-eabihf` | ? |  |
 [`armv6k-nintendo-3ds`](platform-support/armv6k-nintendo-3ds.md) | ? |  | ARMv6K Nintendo 3DS, Horizon (Requires devkitARM toolchain)
 `armv7-apple-ios` | ✓ |  | ARMv7 iOS, Cortex-a8
+[`armv7-sony-vita-newlibeabihf`](platform-support/armv7-sony-vita-newlibeabihf.md) | ? |  | ARM Cortex-A9 Sony PlayStation Vita (requires VITASDK toolchain)
 [`armv7-unknown-linux-uclibceabi`](platform-support/armv7-unknown-linux-uclibceabi.md) | ✓ | ✓ | ARMv7 Linux with uClibc, softfloat
 [`armv7-unknown-linux-uclibceabihf`](platform-support/armv7-unknown-linux-uclibceabihf.md) | ✓ | ? | ARMv7 Linux with uClibc, hardfloat
 `armv7-unknown-freebsd` | ✓ | ✓ | ARMv7 FreeBSD

src/doc/rustc/src/platform-support/armv7-sony-vita-eabihf.md

@@ -0,0 +1,127 @@
+# armv7-sony-vita-eabihf
+
+**Tier: 3**
+
+This tier supports the ARM Cortex A9 processor running on a PlayStation Vita console. `armv7-vita-newlibeabihf` aims to have support for `std` crate using `newlib` as a bridge.
+
+## Designated Developers
+
+* [@amg98](https://github.com/amg98)
+
+## Requirements
+
+This target is cross compiled, and requires installing [VITASDK](https://vitasdk.org/) toolchain on your system.
+
+## Building
+
+You can build Rust with support for the target by adding it to the `target`
+list in `config.toml`:
+
+```toml
+[build]
+build-stage = 1
+target = ["armv7-sony-vita-newlibeabihf"]
+```
+
+## Cross-compilation
+
+This target can be cross-compiled from `x86_64` on either Windows, MacOS or Linux systems. Other hosts are not supported for cross-compilation.
+
+## Testing
+
+Currently there is no support to run the rustc test suite for this target.
+
+## Building and Running Rust Programs
+
+To test your developed rust programs for PlayStation Vita, first you have to prepare a proper executable for the device using the resulting ELF file you get from compilation step. The needed steps can be automated using tools like `cargo-make`. Use the example below as a template for your project:
+
+```toml
+[env]
+TITLE = "Rust Hello World"
+TITLEID = "RUST00001"
+# At least a "sce_sys" folder should be place there for app metadata (title, icons, description...)
+# You can find sample assets for that on $VITASDK/share/gcc-arm-vita-eabi/samples/hello_world/sce_sys/
+STATIC_DIR = "static"   # Folder where static assets should be placed (sce_sys folder is at $STATIC_DIR/sce_sys)
+CARGO_TARGET_DIR = { script = ["echo ${CARGO_TARGET_DIR:=target}"] }
+RUST_TARGET_PATH = { script = ["echo $(pwd)"]}
+RUST_TARGET = "armv7-sony-vita-newlibeabihf"
+CARGO_OUT_DIR = "${CARGO_TARGET_DIR}/${RUST_TARGET}/release"
+
+[tasks.xbuild]
+# This is the command where you get the ELF executable file (e.g. call to cargo build)
+
+[tasks.strip]
+description = "Strip the produced ELF executable."
+dependencies = ["xbuild"]
+command = "arm-vita-eabi-strip"
+args = ["-g", '${CARGO_OUT_DIR}/${CARGO_MAKE_CRATE_FS_NAME}.elf']
+
+[tasks.velf]
+description = "Build an VELF executable from the obtained ELF file."
+dependencies = ["strip"]
+command = "vita-elf-create"
+args = ['${CARGO_OUT_DIR}/${CARGO_MAKE_CRATE_NAME}.elf', '${CARGO_OUT_DIR}/${CARGO_MAKE_CRATE_NAME}.velf']
+
+[tasks.eboot-bin]
+description = "Build an `eboot.bin` file from the obtained VELF file."
+dependencies = ["velf"]
+command = "vita-make-fself"
+args = ["-s", '${CARGO_OUT_DIR}/${CARGO_MAKE_CRATE_NAME}.velf', '${CARGO_OUT_DIR}/eboot.bin']
+
+[tasks.param-sfo]
+description = "Build the `param.sfo` manifest using with given TITLE and TITLEID."
+command = "vita-mksfoex"
+args = ["-s", 'TITLE_ID=${TITLEID}', '${TITLE}', '${CARGO_OUT_DIR}/param.sfo']
+
+[tasks.manifest]
+description = "List all static resources into a manifest file."
+script = [
+  'mkdir -p "${CARGO_OUT_DIR}"',
+  '''
+  if [ -d "${STATIC_DIR}" ]; then
+    find "${STATIC_DIR}" -type f > "${CARGO_OUT_DIR}/MANIFEST"
+  else
+    touch "${CARGO_OUT_DIR}/MANIFEST"
+  fi
+  '''
+]
+
+[tasks.vpk]
+description = "Build a VPK distribution of the project executable and resources."
+dependencies = ["eboot-bin", "param-sfo", "manifest"]
+script_runner = "@rust"
+script = [
+    '''
+    use std::io::BufRead;
+    use std::fs::File;
+
+    fn main() {
+
+      let crate_name = env!("CARGO_MAKE_CRATE_NAME");
+      let static_dir = env!("STATIC_DIR");
+      let out_dir = std::path::PathBuf::from(env!("CARGO_OUT_DIR"));
+
+      let mut cmd = ::std::process::Command::new("vita-pack-vpk");
+      cmd.arg("-s").arg(out_dir.join("param.sfo"));
+      cmd.arg("-b").arg(out_dir.join("eboot.bin"));
+
+      // Add files from MANIFEST
+      if let Ok(file) = File::open(out_dir.join("MANIFEST")) {
+          let mut reader = ::std::io::BufReader::new(file);
+          let mut lines = reader.lines();
+          while let Some(Ok(line)) = lines.next() {
+              let p1 = ::std::path::PathBuf::from(line);            // path on FS
+              let p2 = p1.strip_prefix(static_dir).unwrap();        // path in VPK
+              cmd.arg("--add").arg(format!("{}={}", p1.display(), p2.display()));
+          }
+      }
+
+      cmd.arg(out_dir.join(format!("{}.vpk", crate_name)))
+        .output()
+        .expect("command failed.");
+    }
+    '''
+]
+```
+
+After running the above script, you should be able to get a *.vpk file in the same folder your *.elf executable resides. Now you can pick it and install it on your own PlayStation Vita using, for example, [VitaShell](https://github.com/TheOfficialFloW/VitaShell/releases) or you can use an emulator. For the time being, the most mature emulator for PlayStation Vita is [Vita3K](https://vita3k.org/), although I personally recommend testing your programs in real hardware, as the emulator is quite experimental.

src/test/ui/check-cfg/well-known-values.stderr

@@ -6,7 +6,7 @@ LL | #[cfg(target_os = "linuz")]
    |                   |
    |                   help: did you mean: `"linux"`
    |
-   = note: expected values for `target_os` are: aix, android, cuda, dragonfly, emscripten, espidf, freebsd, fuchsia, haiku, hermit, horizon, illumos, ios, l4re, linux, macos, netbsd, none, nto, openbsd, psp, redox, solaris, solid_asp3, tvos, uefi, unknown, vxworks, wasi, watchos, windows, xous
+   = note: expected values for `target_os` are: aix, android, cuda, dragonfly, emscripten, espidf, freebsd, fuchsia, haiku, hermit, horizon, illumos, ios, l4re, linux, macos, netbsd, none, nto, openbsd, psp, redox, solaris, solid_asp3, tvos, uefi, unknown, vita, vxworks, wasi, watchos, windows, xous
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value