about summary refs log tree commit diff
path: root/ports/sysdeps/arm/tls-macros.h
diff options
context:
space:
mode:
Diffstat (limited to 'ports/sysdeps/arm/tls-macros.h')
-rw-r--r--ports/sysdeps/arm/tls-macros.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/ports/sysdeps/arm/tls-macros.h b/ports/sysdeps/arm/tls-macros.h
new file mode 100644
index 0000000000..e41d3bc5aa
--- /dev/null
+++ b/ports/sysdeps/arm/tls-macros.h
@@ -0,0 +1,78 @@
+#ifdef __thumb2__
+#define ARM_PC_OFFSET "4"
+#else
+#define ARM_PC_OFFSET "8"
+#endif
+
+#define TLS_LE(x)					\
+  ({ int *__result;					\
+     void *tp = __builtin_thread_pointer ();		\
+     asm ("ldr %0, 1f; "				\
+	  "add %0, %1, %0; "				\
+	  "b 2f; "					\
+	  ".align 2; "					\
+	  "1: .word " #x "(tpoff); "			\
+	  "2: "						\
+	  : "=&r" (__result) : "r" (tp));		\
+     __result; })
+
+#ifdef __thumb2__
+#define TLS_IE(x)					\
+  ({ int *__result;					\
+     void *tp = __builtin_thread_pointer ();		\
+     asm ("ldr %0, 1f; "				\
+	  "3: add %0, pc, %0;"				\
+	  "ldr %0, [%0];"				\
+	  "add %0, %1, %0; "				\
+	  "b 2f; "					\
+	  ".align 2; "					\
+	  "1: .word " #x "(gottpoff) + (. - 3b - 4); "	\
+	  "2: "						\
+	  : "=&r" (__result) : "r" (tp));		\
+     __result; })
+#else
+#define TLS_IE(x)					\
+  ({ int *__result;					\
+     void *tp = __builtin_thread_pointer ();		\
+     asm ("ldr %0, 1f; "				\
+	  "3: ldr %0, [pc, %0];"			\
+	  "add %0, %1, %0; "				\
+	  "b 2f; "					\
+	  ".align 2; "					\
+	  "1: .word " #x "(gottpoff) + (. - 3b - 8); "	\
+	  "2: "						\
+	  : "=&r" (__result) : "r" (tp));		\
+     __result; })
+#endif
+
+#define TLS_LD(x)					\
+  ({ char *__result;					\
+     int __offset;					\
+     extern void *__tls_get_addr (void *);		\
+     asm ("ldr %0, 2f; "				\
+	  "1: add %0, pc, %0; "				\
+	  "b 3f; "					\
+	  ".align 2; "					\
+	  "2: .word " #x "(tlsldm) + (. - 1b - "ARM_PC_OFFSET"); "	\
+	  "3: "						\
+	  : "=r" (__result));				\
+     __result = (char *)__tls_get_addr (__result);	\
+     asm ("ldr %0, 1f; "				\
+	  "b 2f; "					\
+	  ".align 2; "					\
+	  "1: .word " #x "(tlsldo); "			\
+	  "2: "						\
+	  : "=r" (__offset));				\
+     (int *) (__result + __offset); })
+
+#define TLS_GD(x)					\
+  ({ int *__result;					\
+     extern void *__tls_get_addr (void *);		\
+     asm ("ldr %0, 2f; "				\
+	  "1: add %0, pc, %0; "				\
+	  "b 3f; "					\
+	  ".align 2; "					\
+	  "2: .word " #x "(tlsgd) + (. - 1b - "ARM_PC_OFFSET"); "	\
+	  "3: "						\
+	  : "=r" (__result));				\
+     (int *)__tls_get_addr (__result); })