FreeRTOS/Source/portable/Renesas/SH2A_FPU/portasm.src

;/*
;    FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
;    All rights reserved
;	
;
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	.import _pxCurrentTCB
	.import _vTaskSwitchContext
	.import _xTaskIncrementTick

	.export _vPortStartFirstTask
	.export _ulPortGetGBR
	.export _vPortYieldHandler
	.export _vPortPreemptiveTick
	.export _vPortCooperativeTick
	.export _vPortSaveFlopRegisters
	.export _vPortRestoreFlopRegisters

    .section    P

	.INCLUDE "ISR_Support.inc"
	
_vPortStartFirstTask:
		
	portRESTORE_CONTEXT
	
;-----------------------------------------------------------

_vPortYieldHandler:

	portSAVE_CONTEXT

	mov.l	#_vTaskSwitchContext, r0
	jsr		@r0
	nop

	portRESTORE_CONTEXT
	
;-----------------------------------------------------------

_vPortPreemptiveTick

	portSAVE_CONTEXT
	
	mov.l	#_xTaskIncrementTick, r0
	jsr		@r0
	nop

	mov.l	#_vTaskSwitchContext, r0
	jsr		@r0
	nop

	portRESTORE_CONTEXT
	
;-----------------------------------------------------------

_vPortCooperativeTick

	portSAVE_CONTEXT
	
	mov.l	#_xTaskIncrementTick, r0
	jsr		@r0
	nop

	portRESTORE_CONTEXT
	
;-----------------------------------------------------------

_ulPortGetGBR:

	stc.l	gbr, r0
	rts
	nop

;-----------------------------------------------------------

_vPortSaveFlopRegisters:

	fmov.s	fr0, @-r4
	fmov.s	fr1, @-r4
	fmov.s	fr2, @-r4
	fmov.s	fr3, @-r4
	fmov.s	fr4, @-r4
	fmov.s	fr5, @-r4
	fmov.s	fr6, @-r4
	fmov.s	fr7, @-r4
	fmov.s	fr8, @-r4
	fmov.s	fr9, @-r4
	fmov.s	fr10, @-r4
	fmov.s	fr11, @-r4
	fmov.s	fr12, @-r4
	fmov.s	fr13, @-r4
	fmov.s	fr14, @-r4
	fmov.s	fr15, @-r4	
	sts.l   fpul, @-r4
	sts.l   fpscr, @-r4
	
	rts
	nop

;-----------------------------------------------------------
	
_vPortRestoreFlopRegisters:

	add.l  #-72, r4
	lds.l  @r4+, fpscr
	lds.l  @r4+, fpul	
	fmov.s @r4+, fr15
	fmov.s @r4+, fr14
	fmov.s @r4+, fr13
	fmov.s @r4+, fr12
	fmov.s @r4+, fr11
	fmov.s @r4+, fr10
	fmov.s @r4+, fr9
	fmov.s @r4+, fr8
	fmov.s @r4+, fr7
	fmov.s @r4+, fr6
	fmov.s @r4+, fr5
	fmov.s @r4+, fr4
	fmov.s @r4+, fr3
	fmov.s @r4+, fr2
	fmov.s @r4+, fr1
	fmov.s @r4+, fr0
	
	rts
	nop
	
	.end