mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-29 21:05:13 +00:00
91 lines
1.6 KiB
ArmAsm
91 lines
1.6 KiB
ArmAsm
|
/*
|
||
|
|
* arch/sh/lib/mcount.S
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 Paul Mundt
|
||
|
|
* Copyright (C) 2008 Matt Fleming
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*/
|
||
|
|
#include <asm/ftrace.h>
|
||
|
|
|
||
|
|
#define MCOUNT_ENTER() \
|
||
|
|
mov.l r4, @-r15; \
|
||
|
|
mov.l r5, @-r15; \
|
||
|
|
mov.l r6, @-r15; \
|
||
|
|
mov.l r7, @-r15; \
|
||
|
|
sts.l pr, @-r15; \
|
||
|
|
\
|
||
|
|
mov.l @(20,r15),r4; \
|
||
|
|
sts pr, r5
|
||
|
|
|
||
|
|
#define MCOUNT_LEAVE() \
|
||
|
|
lds.l @r15+, pr; \
|
||
|
|
mov.l @r15+, r7; \
|
||
|
|
mov.l @r15+, r6; \
|
||
|
|
mov.l @r15+, r5; \
|
||
|
|
rts; \
|
||
|
|
mov.l @r15+, r4
|
||
|
|
|
||
|
|
.align 2
|
||
|
|
.globl _mcount
|
||
|
|
.type _mcount,@function
|
||
|
|
.globl mcount
|
||
|
|
.type mcount,@function
|
||
|
|
_mcount:
|
||
|
|
mcount:
|
||
|
|
MCOUNT_ENTER()
|
||
|
|
|
||
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
||
|
|
.globl mcount_call
|
||
|
|
mcount_call:
|
||
|
|
mov.l .Lftrace_stub, r6
|
||
|
|
#else
|
||
|
|
mov.l .Lftrace_trace_function, r6
|
||
|
|
mov.l ftrace_stub, r7
|
||
|
|
cmp/eq r6, r7
|
||
|
|
bt skip_trace
|
||
|
|
mov.l @r6, r6
|
||
|
|
#endif
|
||
|
|
|
||
|
|
jsr @r6
|
||
|
|
nop
|
||
|
|
|
||
|
|
skip_trace:
|
||
|
|
MCOUNT_LEAVE()
|
||
|
|
|
||
|
|
.align 2
|
||
|
|
.Lftrace_trace_function:
|
||
|
|
.long ftrace_trace_function
|
||
|
|
|
||
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
||
|
|
.globl ftrace_caller
|
||
|
|
ftrace_caller:
|
||
|
|
MCOUNT_ENTER()
|
||
|
|
|
||
|
|
.globl ftrace_call
|
||
|
|
ftrace_call:
|
||
|
|
mov.l .Lftrace_stub, r6
|
||
|
|
jsr @r6
|
||
|
|
nop
|
||
|
|
|
||
|
|
MCOUNT_LEAVE()
|
||
|
|
#endif /* CONFIG_DYNAMIC_FTRACE */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NOTE: From here on the locations of the .Lftrace_stub label and
|
||
|
|
* ftrace_stub itself are fixed. Adding additional data here will skew
|
||
|
|
* the displacement for the memory table and break the block replacement.
|
||
|
|
* Place new labels either after the ftrace_stub body, or before
|
||
|
|
* ftrace_caller. You have been warned.
|
||
|
|
*/
|
||
|
|
.align 2
|
||
|
|
.Lftrace_stub:
|
||
|
|
.long ftrace_stub
|
||
|
|
|
||
|
|
.globl ftrace_stub
|
||
|
|
ftrace_stub:
|
||
|
|
rts
|
||
|
|
nop
|