Fix TLS access in JIT on FreeBSD x86-64

FreeBSD uses two headers fields in the DTV, so the module ID is offset by 1

Author: arnaud-lb

ext/opcache/jit/zend_jit_ir.c

@@ -3256,6 +3256,14 @@ static void zend_jit_setup(void)
 			: "=a" (ti));
 		tsrm_tls_offset = ti[1];
 		tsrm_tls_index = ti[0] * 8;
+#elif defined(__FreeBSD__)
+		size_t *ti;
+
+		__asm__(
+			"leaq _tsrm_ls_cache@tlsgd(%%rip), %0\n"
+			: "=a" (ti));
+		tsrm_tls_offset = ti[1];
+		tsrm_tls_index = (ti[0] + 1) * 8;
 #else
 		size_t *ti;