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 */
30 .if \put_ret_addr_in_rdi
31 /* 9*8(%rsp) is return addr on stack */
32 movq_cfi_restore 9*8, rdi
41 #ifdef CONFIG_TRACE_IRQFLAGS
42 THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1
43 THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1
46 #ifdef CONFIG_DEBUG_LOCK_ALLOC
47 THUNK lockdep_sys_exit_thunk,lockdep_sys_exit
51 THUNK ___preempt_schedule, preempt_schedule
52 #ifdef CONFIG_CONTEXT_TRACKING
53 THUNK ___preempt_schedule_context, preempt_schedule_context
57 #if defined(CONFIG_TRACE_IRQFLAGS) \
58 || defined(CONFIG_DEBUG_LOCK_ALLOC) \
59 || defined(CONFIG_PREEMPT)
61 CFI_ADJUST_CFA_OFFSET 9*8
74 _ASM_NOKPROBE(restore)