ARM: OMAP2+: Prepare to move GPMC to drivers by platform data header
[linux/fpc-iii.git] / arch / x86 / lib / thunk_64.S
blobb30b5ebd614ada18d25b3fb7403f7a32e32a96d9
1 /*
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.
7  */
8 #include <linux/linkage.h>
9 #include <asm/dwarf2.h>
10 #include <asm/calling.h>
11 #include <asm/asm.h>
13         /* rdi: arg1 ... normal C conventions. rax is saved/restored. */
14         .macro THUNK name, func, put_ret_addr_in_rdi=0
15         .globl \name
16 \name:
17         CFI_STARTPROC
19         /* this one pushes 9 elems, the next one would be %rIP */
20         SAVE_ARGS
22         .if \put_ret_addr_in_rdi
23         movq_cfi_restore 9*8, rdi
24         .endif
26         call \func
27         jmp  restore
28         CFI_ENDPROC
29         _ASM_NOKPROBE(\name)
30         .endm
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
35 #endif
37 #ifdef CONFIG_DEBUG_LOCK_ALLOC
38         THUNK lockdep_sys_exit_thunk,lockdep_sys_exit
39 #endif
41 #ifdef CONFIG_PREEMPT
42         THUNK ___preempt_schedule, preempt_schedule
43 #ifdef CONFIG_CONTEXT_TRACKING
44         THUNK ___preempt_schedule_context, preempt_schedule_context
45 #endif
46 #endif
48         /* SAVE_ARGS below is used only for the .cfi directives it contains. */
49         CFI_STARTPROC
50         SAVE_ARGS
51 restore:
52         RESTORE_ARGS
53         ret
54         CFI_ENDPROC
55         _ASM_NOKPROBE(restore)