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

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Thomas Gleixner	3f520cd2	2019-06-04 10:11:07 +0200	[diff] [blame^]	1	/* SPDX-License-Identifier: GPL-2.0-only */
Andi Kleen	cc1e684	2006-09-26 10:52:29 +0200	[diff] [blame]	2	/*
				3	* Save registers before calling assembly functions. This avoids
				4	* disturbance of register allocation in some inline assembly constructs.
				5	* Copyright 2001,2002 by Andi Kleen, SuSE Labs.
Steven Rostedt	81d68a9	2008-05-12 21:20:42 +0200	[diff] [blame]	6	* Added trace_hardirqs callers - Copyright 2007 Steven Rostedt, Red Hat, Inc.
Andi Kleen	cc1e684	2006-09-26 10:52:29 +0200	[diff] [blame]	7	*/
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	8	#include <linux/linkage.h>
Ingo Molnar	d36f947	2015-06-03 18:29:26 +0200	[diff] [blame]	9	#include "calling.h"
Masami Hiramatsu	98def1d	2014-04-17 17:17:26 +0900	[diff] [blame]	10	#include <asm/asm.h>
Al Viro	784d569	2016-01-11 11:04:34 -0500	[diff] [blame]	11	#include <asm/export.h>
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	12
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	13	/* rdi: arg1 ... normal C conventions. rax is saved/restored. */
				14	.macro THUNK name, func, put_ret_addr_in_rdi=0
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	15	.globl \name
Josh Poimboeuf	058fb73	2016-01-21 16:49:20 -0600	[diff] [blame]	16	.type \name, @function
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	17	\name:
Josh Poimboeuf	d4bf707	2016-05-17 13:06:06 -0500	[diff] [blame]	18	pushq %rbp
				19	movq %rsp, %rbp
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	20
Ingo Molnar	131484c	2015-05-28 12:21:47 +0200	[diff] [blame]	21	pushq %rdi
				22	pushq %rsi
				23	pushq %rdx
				24	pushq %rcx
				25	pushq %rax
				26	pushq %r8
				27	pushq %r9
				28	pushq %r10
				29	pushq %r11
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	30
				31	.if \put_ret_addr_in_rdi
Josh Poimboeuf	d4bf707	2016-05-17 13:06:06 -0500	[diff] [blame]	32	/* 8(%rbp) is return addr on stack */
				33	movq 8(%rbp), %rdi
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	34	.endif
				35
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	36	call \func
Borislav Petkov	9a7e7b57	2016-07-08 16:01:48 +0200	[diff] [blame]	37	jmp .L_restore
Masami Hiramatsu	98def1d	2014-04-17 17:17:26 +0900	[diff] [blame]	38	_ASM_NOKPROBE(\name)
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	39	.endm
				40
Ingo Molnar	6375e2b	2006-07-03 00:24:45 -0700	[diff] [blame]	41	#ifdef CONFIG_TRACE_IRQFLAGS
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	42	THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1
				43	THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1
Ingo Molnar	6375e2b	2006-07-03 00:24:45 -0700	[diff] [blame]	44	#endif
Peter Zijlstra	10cd706	2007-10-11 22:11:12 +0200	[diff] [blame]	45
				46	#ifdef CONFIG_DEBUG_LOCK_ALLOC
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	47	THUNK lockdep_sys_exit_thunk,lockdep_sys_exit
Peter Zijlstra	10cd706	2007-10-11 22:11:12 +0200	[diff] [blame]	48	#endif
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	49
Oleg Nesterov	0ad6e3c	2014-09-21 20:41:53 +0200	[diff] [blame]	50	#ifdef CONFIG_PREEMPT
				51	THUNK ___preempt_schedule, preempt_schedule
Frederic Weisbecker	4eaca0a	2015-06-04 17:39:08 +0200	[diff] [blame]	52	THUNK ___preempt_schedule_notrace, preempt_schedule_notrace
Al Viro	784d569	2016-01-11 11:04:34 -0500	[diff] [blame]	53	EXPORT_SYMBOL(___preempt_schedule)
				54	EXPORT_SYMBOL(___preempt_schedule_notrace)
Oleg Nesterov	0ad6e3c	2014-09-21 20:41:53 +0200	[diff] [blame]	55	#endif
				56
Denys Vlasenko	69e8544	2015-02-26 14:40:24 -0800	[diff] [blame]	57	#if defined(CONFIG_TRACE_IRQFLAGS) \
				58	\|\| defined(CONFIG_DEBUG_LOCK_ALLOC) \
				59	\|\| defined(CONFIG_PREEMPT)
Borislav Petkov	9a7e7b57	2016-07-08 16:01:48 +0200	[diff] [blame]	60	.L_restore:
Ingo Molnar	131484c	2015-05-28 12:21:47 +0200	[diff] [blame]	61	popq %r11
				62	popq %r10
				63	popq %r9
				64	popq %r8
				65	popq %rax
				66	popq %rcx
				67	popq %rdx
				68	popq %rsi
				69	popq %rdi
Josh Poimboeuf	d4bf707	2016-05-17 13:06:06 -0500	[diff] [blame]	70	popq %rbp
Borislav Petkov	38e6b75	2011-05-31 22:21:54 +0200	[diff] [blame]	71	ret
Borislav Petkov	9a7e7b57	2016-07-08 16:01:48 +0200	[diff] [blame]	72	_ASM_NOKPROBE(.L_restore)
Denys Vlasenko	69e8544	2015-02-26 14:40:24 -0800	[diff] [blame]	73	#endif