xnu-6153.11.26.tar.gz

[apple/xnu.git] / libsyscall / os / tsd.h

diff --git a/libsyscall/os/tsd.h b/libsyscall/os/tsd.h
index 474c97aec2976bba7491dc0bd2e3c457e3acac1e..e4ab6d678ac8c65fdebe761c96566037c2784051 100644 (file)
--- a/libsyscall/os/tsd.h
+++ b/libsyscall/os/tsd.h
@@ -58,7 +58,7 @@ __attribute__((always_inline))
 static __inline__ unsigned int
 _os_cpu_number(void)
 {
-#if defined(__arm__) && defined(_ARM_ARCH_6)
+#if defined(__arm__)
        uintptr_t p;
        __asm__("mrc    p15, 0, %[p], c13, c0, 3" : [p] "=&r" (p));
        return (unsigned int)(p & 0x3ul);
@@ -116,16 +116,16 @@ __attribute__((always_inline, pure))
 static __inline__ void**
 _os_tsd_get_base(void)
 {
-#if defined(__arm__) && defined(_ARM_ARCH_6)
+#if defined(__arm__)
        uintptr_t tsd;
-       __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (tsd));
-       tsd &= ~0x3ul; /* lower 2-bits contain CPU number */
-#elif defined(__arm__) && defined(_ARM_ARCH_5)
-       register uintptr_t tsd asm ("r9");
+       __asm__("mrc p15, 0, %0, c13, c0, 3\n"
+                "bic %0, %0, #0x3\n" : "=r" (tsd));
+       /* lower 2-bits contain CPU number */
 #elif defined(__arm64__)
        uint64_t tsd;
-       __asm__("mrs %0, TPIDRRO_EL0" : "=r" (tsd));
-       tsd &= ~0x7ull;
+       __asm__("mrs %0, TPIDRRO_EL0\n"
+                "bic %0, %0, #0x7\n" : "=r" (tsd));
+       /* lower 3-bits contain CPU number */
 #endif
 
        return (void**)(uintptr_t)tsd;