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.
9 #include <linux/linkage.h>
10 #include <asm/dwarf2.h>
11 #include <asm/calling.h>
12 #include <asm/rwlock.h>
14 /* rdi: arg1 ... normal C conventions. rax is saved/restored. */
15 .macro thunk name,func
25 /* rdi: arg1 ... normal C conventions. rax is passed from C. */
26 .macro thunk_retrax name,func
37 .section .sched.text, "ax"
38 #ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
39 thunk rwsem_down_read_failed_thunk,rwsem_down_read_failed
40 thunk rwsem_down_write_failed_thunk,rwsem_down_write_failed
41 thunk rwsem_wake_thunk,rwsem_wake
42 thunk rwsem_downgrade_thunk,rwsem_downgrade_wake
45 #ifdef CONFIG_TRACE_IRQFLAGS
46 /* put return address in rdi (arg1) */
47 .macro thunk_ra name,func
52 /* SAVE_ARGS pushs 9 elements */
53 /* the next element would be the rip */
60 thunk_ra trace_hardirqs_on_thunk,trace_hardirqs_on_caller
61 thunk_ra trace_hardirqs_off_thunk,trace_hardirqs_off_caller
64 #ifdef CONFIG_DEBUG_LOCK_ALLOC
65 thunk lockdep_sys_exit_thunk,lockdep_sys_exit
68 /* SAVE_ARGS below is used only for the .cfi directives it contains. */