From 249ee389c8647fc1a5b55ba6893306841d595879 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Wed, 21 Aug 2024 14:43:30 +0200
Subject: [PATCH] std.os.windows: Implement teb() for thumb.

https://github.com/wine-mirror/wine/blob/6e15604c48acd63dd8095a4ce2fd011cb3be96db/include/winnt.h#L2503

Closes #4645.
---
 lib/std/os/windows.zig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/std/os/windows.zig b/lib/std/os/windows.zig
index e06a3ff02cd9..aa7b2bd2f86f 100644
--- a/lib/std/os/windows.zig
+++ b/lib/std/os/windows.zig
@@ -2123,6 +2123,10 @@ pub fn teb() *TEB {
                 );
             }
         },
+        .thumb => asm (
+            \\ mrc p15, 0, %[ptr], c13, c0, 2
+            : [ptr] "=r" (-> *TEB),
+        ),
         .aarch64 => asm (
             \\ mov %[ptr], x18
             : [ptr] "=r" (-> *TEB),