Merging of projects/armv6, part 2

Handle TLS for ARMv6 and ARMv7

lib/libc/arm/gen/__aeabi_read_tp.S

@@ -31,10 +31,16 @@ __FBSDID("$FreeBSD$");
 #include <machine/sysarch.h>
 
 ENTRY(__aeabi_read_tp)
+#ifdef ARM_TP_ADDRESS
 	ldr	r0, .Larm_tp_address
 	ldr	r0, [r0]
+#else
+	mrc	p15, 0, r0, c13, c0, 3
+#endif
 	RET
 
+#ifdef ARM_TP_ADDRESS
 .Larm_tp_address:
 	.word ARM_TP_ADDRESS
+#endif
 

lib/libc/arm/gen/_set_tp.c

@@ -35,5 +35,9 @@ void
 _set_tp(void *tp)
 {
 
+#ifdef ARM_TP_ADDRESS
 	*((struct tcb **)ARM_TP_ADDRESS) = tp;
+#else
+	sysarch(ARM_SET_TP, tp);
+#endif
 }