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/arch/x86/lib/thunk_32.S

https://bitbucket.org/ndreys/linux-sunxi
Assembly | 29 lines | 29 code | 0 blank | 0 comment | 0 complexity | 43eab24e57e986b1a441b9baa43f2ec5 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 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
 8	#include <linux/linkage.h>
 9
10#ifdef CONFIG_TRACE_IRQFLAGS
11	/* put return address in eax (arg1) */
12	.macro thunk_ra name,func
13	.globl \name
14\name:
15	pushl %eax
16	pushl %ecx
17	pushl %edx
18	/* Place EIP in the arg1 */
19	movl 3*4(%esp), %eax
20	call \func
21	popl %edx
22	popl %ecx
23	popl %eax
24	ret
25	.endm
26
27	thunk_ra trace_hardirqs_on_thunk,trace_hardirqs_on_caller
28	thunk_ra trace_hardirqs_off_thunk,trace_hardirqs_off_caller
29#endif