2 * Save registers before calling assembly functions. This avoids
3 * disturbance of register allocation in some inline assembly constructs.
4 * Copyright 2001,2002 by Andi Kleen, SuSE Labs.
5 * Added trace_hardirqs callers - Copyright 2007 Steven Rostedt, Red Hat, Inc.
6 * Subject to the GNU public license, v.2. No warranty of any kind.
8 #include <linux/linkage.h>
9 #include <asm/dwarf2.h>
10 #include <asm/calling.h>
13 /* rdi: arg1 ... normal C conventions. rax is saved/restored. */
14 .macro THUNK name, func, put_ret_addr_in_rdi=0
19 /* this one pushes 9 elems, the next one would be %rIP */
22 .if \put_ret_addr_in_rdi
23 movq_cfi_restore 9*8, rdi
32 #ifdef CONFIG_TRACE_IRQFLAGS
33 THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1
34 THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1
37 #ifdef CONFIG_DEBUG_LOCK_ALLOC
38 THUNK lockdep_sys_exit_thunk,lockdep_sys_exit
42 THUNK ___preempt_schedule, preempt_schedule
43 #ifdef CONFIG_CONTEXT_TRACKING
44 THUNK ___preempt_schedule_context, preempt_schedule_context
48 /* SAVE_ARGS below is used only for the .cfi directives it contains. */
55 _ASM_NOKPROBE(restore)