Add {i586,i686,x86_64}-rust9x-windows-msvc targets

Author: seritools

compiler/rustc_target/src/spec/mod.rs

@@ -1605,10 +1605,13 @@ supported_targets! {
     ("x86_64-pc-windows-msvc", x86_64_pc_windows_msvc),
     ("x86_64-uwp-windows-msvc", x86_64_uwp_windows_msvc),
     ("x86_64-win7-windows-msvc", x86_64_win7_windows_msvc),
+    ("x86_64-rust9x-windows-msvc", x86_64_rust9x_windows_msvc),
     ("i686-pc-windows-msvc", i686_pc_windows_msvc),
     ("i686-uwp-windows-msvc", i686_uwp_windows_msvc),
     ("i686-win7-windows-msvc", i686_win7_windows_msvc),
+    ("i686-rust9x-windows-msvc", i686_rust9x_windows_msvc),
     ("i586-pc-windows-msvc", i586_pc_windows_msvc),
+    ("i586-rust9x-windows-msvc", i586_rust9x_windows_msvc),
     ("thumbv7a-pc-windows-msvc", thumbv7a_pc_windows_msvc),
     ("thumbv7a-uwp-windows-msvc", thumbv7a_uwp_windows_msvc),
 

compiler/rustc_target/src/spec/targets/i586_rust9x_windows_msvc.rs

@@ -0,0 +1,8 @@
+use crate::spec::Target;
+
+pub fn target() -> Target {
+    let mut base = super::i686_rust9x_windows_msvc::target();
+    base.cpu = "pentium".into();
+    base.llvm_target = "i586-pc-windows-msvc".into();
+    base
+}

compiler/rustc_target/src/spec/targets/i686_rust9x_windows_msvc.rs

@@ -0,0 +1,38 @@
+use crate::spec::{base, LinkerFlavor, Lld, Target};
+
+pub fn target() -> Target {
+    let mut base = base::windows_msvc::opts();
+    base.cpu = "pentium4".into();
+    base.max_atomic_width = Some(64);
+    base.vendor = "rust9x".into();
+
+    base.add_pre_link_args(
+        LinkerFlavor::Msvc(Lld::No),
+        &[
+            // Mark all dynamic libraries and executables as compatible with the larger 4GiB address
+            // space available to x86 Windows binaries on x86_64.
+            "/LARGEADDRESSAWARE",
+            // Ensure the linker will only produce an image if it can also produce a table of
+            // the image's safe exception handlers.
+            // https://docs.microsoft.com/en-us/cpp/build/reference/safeseh-image-has-safe-exception-handlers
+            "/SAFESEH",
+            // Link to ___CxxFrameHandler (XP and earlier MSVCRT) instead of ___CxxFrameHandler3.
+            // This cannot be done in the MSVC `eh_personality` handling because LLVM hardcodes SEH
+            // support based on that name, sadly
+            "/ALTERNATENAME:___CxxFrameHandler3=___CxxFrameHandler",
+        ],
+    );
+
+    // Workaround for #95429
+    base.has_thread_local = false;
+
+    Target {
+        llvm_target: "i686-pc-windows-msvc".into(),
+        pointer_width: 32,
+        data_layout: "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
+            i64:64-f80:128-n8:16:32-a:0:32-S32"
+            .into(),
+        arch: "x86".into(),
+        options: base,
+    }
+}

compiler/rustc_target/src/spec/targets/x86_64_rust9x_windows_msvc.rs

@@ -0,0 +1,18 @@
+use crate::spec::{base, Target};
+
+pub fn target() -> Target {
+    let mut base = base::windows_msvc::opts();
+    base.cpu = "x86-64".into();
+    base.plt_by_default = false;
+    base.max_atomic_width = Some(64);
+    base.vendor = "rust9x".into();
+
+    Target {
+        llvm_target: "x86_64-pc-windows-msvc".into(),
+        pointer_width: 64,
+        data_layout: "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+            .into(),
+        arch: "x86_64".into(),
+        options: base,
+    }
+}