Blame - arch/x86/lib/thunk_64.S - SHIFTPHONES/mainline/linux

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Andi Kleen	cc1e684	2006-09-26 10:52:29 +0200	[diff] [blame]	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.
Steven Rostedt	81d68a9	2008-05-12 21:20:42 +0200	[diff] [blame]	5	* Added trace_hardirqs callers - Copyright 2007 Steven Rostedt, Red Hat, Inc.
Andi Kleen	cc1e684	2006-09-26 10:52:29 +0200	[diff] [blame]	6	* Subject to the GNU public license, v.2. No warranty of any kind.
				7	*/
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	8	#include <linux/linkage.h>
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	9	#include <asm/calling.h>
Masami Hiramatsu	98def1d	2014-04-17 17:17:26 +0900	[diff] [blame]	10	#include <asm/asm.h>
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	11
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	12	/* rdi: arg1 ... normal C conventions. rax is saved/restored. */
				13	.macro THUNK name, func, put_ret_addr_in_rdi=0
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	14	.globl \name
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	15	\name:
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	16
				17	/* this one pushes 9 elems, the next one would be %rIP */
Ingo Molnar	131484c	2015-05-28 12:21:47 +0200	[diff] [blame^]	18	pushq %rdi
				19	pushq %rsi
				20	pushq %rdx
				21	pushq %rcx
				22	pushq %rax
				23	pushq %r8
				24	pushq %r9
				25	pushq %r10
				26	pushq %r11
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	27
				28	.if \put_ret_addr_in_rdi
Denys Vlasenko	69e8544	2015-02-26 14:40:24 -0800	[diff] [blame]	29	/* 98(%rsp) is return addr on stack /
Ingo Molnar	131484c	2015-05-28 12:21:47 +0200	[diff] [blame^]	30	movq 9*8(%rsp), %rdi
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	31	.endif
				32
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	33	call \func
				34	jmp restore
Masami Hiramatsu	98def1d	2014-04-17 17:17:26 +0900	[diff] [blame]	35	_ASM_NOKPROBE(\name)
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	36	.endm
				37
Ingo Molnar	6375e2b	2006-07-03 00:24:45 -0700	[diff] [blame]	38	#ifdef CONFIG_TRACE_IRQFLAGS
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	39	THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1
				40	THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1
Ingo Molnar	6375e2b	2006-07-03 00:24:45 -0700	[diff] [blame]	41	#endif
Peter Zijlstra	10cd706	2007-10-11 22:11:12 +0200	[diff] [blame]	42
				43	#ifdef CONFIG_DEBUG_LOCK_ALLOC
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	44	THUNK lockdep_sys_exit_thunk,lockdep_sys_exit
Peter Zijlstra	10cd706	2007-10-11 22:11:12 +0200	[diff] [blame]	45	#endif
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	46
Oleg Nesterov	0ad6e3c	2014-09-21 20:41:53 +0200	[diff] [blame]	47	#ifdef CONFIG_PREEMPT
				48	THUNK ___preempt_schedule, preempt_schedule
				49	#ifdef CONFIG_CONTEXT_TRACKING
				50	THUNK ___preempt_schedule_context, preempt_schedule_context
				51	#endif
				52	#endif
				53
Denys Vlasenko	69e8544	2015-02-26 14:40:24 -0800	[diff] [blame]	54	#if defined(CONFIG_TRACE_IRQFLAGS) \
				55	\|\| defined(CONFIG_DEBUG_LOCK_ALLOC) \
				56	\|\| defined(CONFIG_PREEMPT)
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	57	restore:
Ingo Molnar	131484c	2015-05-28 12:21:47 +0200	[diff] [blame^]	58	popq %r11
				59	popq %r10
				60	popq %r9
				61	popq %r8
				62	popq %rax
				63	popq %rcx
				64	popq %rdx
				65	popq %rsi
				66	popq %rdi
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	67	ret
Masami Hiramatsu	98def1d	2014-04-17 17:17:26 +0900	[diff] [blame]	68	_ASM_NOKPROBE(restore)
Denys Vlasenko	69e8544	2015-02-26 14:40:24 -0800	[diff] [blame]	69	#endif