1/*
2 * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash)
3 * Copyright 2008 by Steven Rostedt, Red Hat, Inc
4 *  (inspired by Andi Kleen's thunk_64.S)
5 * Subject to the GNU public license, v.2. No warranty of any kind.
6 */
7	#include <linux/linkage.h>
8	#include <asm/asm.h>
9	#include <asm/dwarf2.h>
10
11	/* put return address in eax (arg1) */
12	.macro THUNK name, func, put_ret_addr_in_eax=0
13	.globl \name
14\name:
15	CFI_STARTPROC
16	pushl_cfi %eax
17	CFI_REL_OFFSET eax, 0
18	pushl_cfi %ecx
19	CFI_REL_OFFSET ecx, 0
20	pushl_cfi %edx
21	CFI_REL_OFFSET edx, 0
22
23	.if \put_ret_addr_in_eax
24	/* Place EIP in the arg1 */
25	movl 3*4(%esp), %eax
26	.endif
27
28	call \func
29	popl_cfi %edx
30	CFI_RESTORE edx
31	popl_cfi %ecx
32	CFI_RESTORE ecx
33	popl_cfi %eax
34	CFI_RESTORE eax
35	ret
36	CFI_ENDPROC
37	_ASM_NOKPROBE(\name)
38	.endm
39
40#ifdef CONFIG_TRACE_IRQFLAGS
41	THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1
42	THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1
43#endif
44
45#ifdef CONFIG_PREEMPT
46	THUNK ___preempt_schedule, preempt_schedule
47#ifdef CONFIG_CONTEXT_TRACKING
48	THUNK ___preempt_schedule_context, preempt_schedule_context
49#endif
50#endif
51
52