[deliverable/linux.git] / arch / metag / kernel / ftrace_stub.S

/*
 * Copyright (C) 2008 Imagination Technologies Ltd.
 * Licensed under the GPL
 *
 */

#include <asm/ftrace.h>

	.text
#ifdef CONFIG_DYNAMIC_FTRACE
	.global	_mcount_wrapper
	.type	_mcount_wrapper,function
_mcount_wrapper:
	MOV	PC,D0.4

	.global _ftrace_caller
	.type	_ftrace_caller,function
_ftrace_caller:
	MSETL   [A0StP], D0Ar6, D0Ar4, D0Ar2, D0.4
	MOV     D1Ar1, D0.4
	MOV     D0Ar2, D1RtP
	SUB	D1Ar1,D1Ar1,#MCOUNT_INSN_SIZE

	.global _ftrace_call
_ftrace_call:
	MOVT	D1RtP,#HI(_ftrace_stub)
	CALL	D1RtP,#LO(_ftrace_stub)
	GETL    D0.4,  D1RtP, [A0StP++#(-8)]
	GETL    D0Ar2, D1Ar1, [A0StP++#(-8)]
	GETL    D0Ar4, D1Ar3, [A0StP++#(-8)]
	GETL    D0Ar6, D1Ar5, [A0StP++#(-8)]
	MOV     PC, D0.4
#else

	.global	_mcount_wrapper
	.type	_mcount_wrapper,function
_mcount_wrapper:
	MSETL   [A0StP], D0Ar6, D0Ar4, D0Ar2, D0.4
	MOV     D1Ar1, D0.4
	MOV     D0Ar2, D1RtP
	MOVT    D0Re0,#HI(_ftrace_trace_function)
	ADD	D0Re0,D0Re0,#LO(_ftrace_trace_function)
	GET	D1Ar3,[D0Re0]
	MOVT	D1Re0,#HI(_ftrace_stub)
	ADD	D1Re0,D1Re0,#LO(_ftrace_stub)
	CMP	D1Ar3,D1Re0
	BEQ	$Ltrace_exit
	MOV	D1RtP,D1Ar3
	SUB	D1Ar1,D1Ar1,#MCOUNT_INSN_SIZE
	SWAP	PC,D1RtP
$Ltrace_exit:
	GETL    D0.4,  D1RtP, [A0StP++#(-8)]
	GETL    D0Ar2, D1Ar1, [A0StP++#(-8)]
	GETL    D0Ar4, D1Ar3, [A0StP++#(-8)]
	GETL    D0Ar6, D1Ar5, [A0StP++#(-8)]
	MOV     PC, D0.4

#endif	/* CONFIG_DYNAMIC_FTRACE */

	.global _ftrace_stub
_ftrace_stub:
	MOV 	PC,D1RtP
Commit	Line	Data
00512bdd JH	1	/*
	2	* Copyright (C) 2008 Imagination Technologies Ltd.
	3	* Licensed under the GPL
	4	*
	5	*/
	6
	7	#include <asm/ftrace.h>
	8
	9	.text
	10	#ifdef CONFIG_DYNAMIC_FTRACE
	11	.global _mcount_wrapper
	12	.type _mcount_wrapper,function
	13	_mcount_wrapper:
	14	MOV PC,D0.4
	15
	16	.global _ftrace_caller
	17	.type _ftrace_caller,function
	18	_ftrace_caller:
00512bdd JH	19	MSETL [A0StP], D0Ar6, D0Ar4, D0Ar2, D0.4
	20	MOV D1Ar1, D0.4
	21	MOV D0Ar2, D1RtP
	22	SUB D1Ar1,D1Ar1,#MCOUNT_INSN_SIZE
	23
	24	.global _ftrace_call
	25	_ftrace_call:
	26	MOVT D1RtP,#HI(_ftrace_stub)
	27	CALL D1RtP,#LO(_ftrace_stub)
	28	GETL D0.4, D1RtP, [A0StP++#(-8)]
	29	GETL D0Ar2, D1Ar1, [A0StP++#(-8)]
	30	GETL D0Ar4, D1Ar3, [A0StP++#(-8)]
	31	GETL D0Ar6, D1Ar5, [A0StP++#(-8)]
	32	MOV PC, D0.4
	33	#else
	34
	35	.global _mcount_wrapper
	36	.type _mcount_wrapper,function
	37	_mcount_wrapper:
00512bdd JH	38	MSETL [A0StP], D0Ar6, D0Ar4, D0Ar2, D0.4
	39	MOV D1Ar1, D0.4
	40	MOV D0Ar2, D1RtP
	41	MOVT D0Re0,#HI(_ftrace_trace_function)
	42	ADD D0Re0,D0Re0,#LO(_ftrace_trace_function)
	43	GET D1Ar3,[D0Re0]
	44	MOVT D1Re0,#HI(_ftrace_stub)
	45	ADD D1Re0,D1Re0,#LO(_ftrace_stub)
	46	CMP D1Ar3,D1Re0
	47	BEQ $Ltrace_exit
	48	MOV D1RtP,D1Ar3
	49	SUB D1Ar1,D1Ar1,#MCOUNT_INSN_SIZE
	50	SWAP PC,D1RtP
	51	$Ltrace_exit:
	52	GETL D0.4, D1RtP, [A0StP++#(-8)]
	53	GETL D0Ar2, D1Ar1, [A0StP++#(-8)]
	54	GETL D0Ar4, D1Ar3, [A0StP++#(-8)]
	55	GETL D0Ar6, D1Ar5, [A0StP++#(-8)]
	56	MOV PC, D0.4
	57
	58	#endif /* CONFIG_DYNAMIC_FTRACE */
	59
	60	.global _ftrace_stub
	61	_ftrace_stub:
	62	MOV PC,D1RtP