winnt.h: Provide inline NtCurrentTeb implementation for mingw arm builds.

Based on mingw-w64. Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

winnt.h: Provide inline NtCurrentTeb implementation for mingw arm builds.
6a05b84e · Jacek Caban · Alexandre Julliard · 0413e2a5 · 6a05b84e
Commit 6a05b84e authored May 27, 2020 by Jacek Caban Committed by Alexandre Julliard May 27, 2020
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winnt.h include/winnt.h +7 -0

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--- a/include/winnt.h
+++ b/include/winnt.h
@@ -2675,6 +2675,13 @@ static FORCEINLINE struct _TEB * WINAPI NtCurrentTeb(void)
 {
    return (struct _TEB *)__readgsqword(FIELD_OFFSET(NT_TIB, Self));
 }
+#elif defined(__arm__) && defined(__MINGW32__)
+static FORCEINLINE struct _TEB * WINAPI NtCurrentTeb(void)
+{
+    struct _TEB *teb;
+    __asm__("mrc p15, 0, %0, c13, c0, 2" : "=r" (teb));
+    return teb;
+}
 #else
 extern struct _TEB * WINAPI NtCurrentTeb(void);
 #endif