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;    Commonly used macros
;
;    Copyright (C) 2010,2012,2013 Leo C.
;
;    This file is part of avrcpm.
;
;    avrcpm is free software: you can redistribute it and/or modify it
;    under the terms of the GNU General Public License as published by
;    the Free Software Foundation, either version 3 of the License, or
;    (at your option) any later version.
;
;    avrcpm is distributed in the hope that it will be useful,
;    but WITHOUT ANY WARRANTY; without even the implied warranty of
;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;    GNU General Public License for more details.
;
;    You should have received a copy of the GNU General Public License
;    along with avrcpm.  If not, see <http://www.gnu.org/licenses/>.
;
;    $Id: macros.inc 241 2015-12-10 09:38:25Z rapid $
;

;------------------------------------------------
;
.macro	outm8
.if	@0 > 0x3f
	sts	@0,@1
.else
	out	@0,@1
.endif
.endm

;------------------------------------------------
;
.macro	inm8
.if	@1 > 0x3f
	lds	@0,@1
.else
	in	@0,@1
.endif
.endm

;------------------------------------------------
;
.macro	sbism8
.if	@0 > 0x1f
	in	_tmp0,@0
	sbrs	_tmp0,@1
.else
	sbis	@0,@1
.endif
.endm

;------------------------------------------------
; load 16 bit constant to register pair

.macro	ldiw
	ldi    @0l, low(@1)
	ldi    @0h, high(@1)
.endm

;------------------------------------------------
; load 16 bit direct from data space

.macro	ldsw
	lds    @0l, @1
	lds    @0h, @1+1
.endm

;------------------------------------------------
; store 16 bit direct to data space

.macro	stsw
	sts    @0,  @1l
	sts    @0+1,@1h
.endm

;------------------------------------------------
; add 16 bit constant to register pair

.macro	addiw
	subi    @0l, low(-@1)
	sbci    @0h, high(-@1)
.endm

;------------------------------------------------
; sub 16 bit constant from register pair

.macro	subiw
	subi    @0l, low(@1)
	sbci    @0h, high(@1)
.endm

;------------------------------------------------
; Move single bit between two registers
;
;	bmov	dstreg,dstbit,srcreg.srcbit

.macro	bmov
	bst	@2,@3
	bld	@0,@1
.endm

;------------------------------------------------
;
;
;
.macro  INTERRUPT
  .set pos_ = PC		;save current position
  .org	@0			;vector address
  .set dist_ = pos_ - (PC+1)

  .if  dist_ <= 2048
  	rjmp     pos_
  .elif (dist_ - (FLASHEND+1)) > -2048
	.set disp_ = (dist_ - (FLASHEND+1)) & 0xFFF
;	rjmp	pos_ - (FLASHEND+1)
	.dw	0xC000 | disp_
  .else
 	jmp    pos_		;jump to handler
  .endif

  .org	pos_			;restore PC
.endm

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

#if 1

.macro  ljmp
  .if FLASHEND > 0x0fff
    .ifdef @0
      .set dist_ = @0 - (PC+1)
      .if dist_ < 0
        .if dist_ >= -2048
	  rjmp	@0
        .elif dist_ < -(FLASHEND+1-2048)
	  .dw	0xC000 | (dist_ + (FLASHEND+1)) & 0xFFF
	.else
	  jmp	@0
	.endif
      .else			; >0
	.if (dist_ < 2048)
	  rjmp	@0
        .elif dist_ > (FLASHEND+1-2048)
	  .dw	0xC000 | (dist_ - (FLASHEND+1)) & 0xFFF
	.else
	  jmp	@0
	.endif
      .endif
    .else			; not def @0
  	jmp	@0
    .endif
  .else				; <= 0x0fff
 	rjmp	@0
  .endif
.endm

#else

.macro  ljmp
  .if FLASHEND > 0x0fff
    .ifdef @0
      .if abs(PC - @0) > 2047
  	jmp	@0
      .else
      	rjmp	@0
      .endif
    .else
  	jmp	@0
    .endif
  .else
 	rjmp	@0
  .endif
.endm
#endif

;------------------------------------------------
;
;
.macro  lcall
  .if FLASHEND > 0x0fff
    .ifdef @0
      .set dist_ = @0 - (PC+1)
      .if dist_ < 0
        .if dist_ >= -2048
	  rcall	@0
        .elif dist_ < -(FLASHEND+1-2048)
	  .dw	0xC000 | (dist_ + (FLASHEND+1)) & 0xFFF
	.else
	  call	@0
	.endif
      .else			; >0
	.if (dist_ < 2048)
	  rcall	@0
        .elif dist_ > (FLASHEND+1-2048)
	  .dw	0xC000 | (dist_ - (FLASHEND+1)) & 0xFFF
	.else
	  call	@0
	.endif
      .endif
    .else			; not def @0
  	call	@0
    .endif
  .else				; <= 0x0fff
 	rcall	@0
  .endif
.endm

;------------------------------------------------
; Make string.
;	makestring "String"

.macro	makestring
  .if strlen(@0) % 2
    .db @0,0
  .else
    .db @0,0,0
  .endif
.endm

;------------------------------------------------
; Print string.
;	printstring "String"

.macro	printstring
  lcall	printstr
  .if strlen(@0) % 2
    .db @0,0
  .else
    .db @0,0,0
  .endif
.endm

;------------------------------------------------
; Print newline
;	print cr, lf

.macro	printnewline
  lcall	printstr
  .db 13,0
.endm


;------------------------------------------------
; Print a Z80 flag
;	print_zflag F
;	  where F is the flag to print

.macro print_zflag

.set S_ = 'S'
.set Z_ = 'Z'
.set H_ = 'H'
.set P_ = 'P'
.set N_ = 'N'
.set C_ = 'C'

	ldi	temp, ' '
	sbrc	z_flags,ZFL_@0
	 ldi	temp, @0_
	rcall	uartputc
.endm

;------------------------------------------------
;	db_version VMAJOR, VMINOR

.macro	db_version

  .set	maj1_	= @0 / 10
  .set	maj0_	= @0 % 10
  .set	min1_	= @1 / 10
  .set	min0_	= @1 % 10

  .if maj1_
    .if min1_
      .db maj1_+'0',maj0_+'0','.',min1_+'0',min0_+'0',0
    .else
      .db maj1_+'0',maj0_+'0','.',          min0_+'0',0,0
    .endif
  .else
    .if min1_
      .db           maj0_+'0','.',min1_+'0',min0_+'0',0,0
    .else
      .db           maj0_+'0','.',          min0_+'0',0
    .endif
  .endif
.endm

; vim:set ts=8 noet nowrap