convert_8u16s.asm

adi bf533视频编码程序

.section L1_code;
.global _convert_8u16s;

//void convert_8u16s(const Ipp8u *src, Ipp16s *dst, int src_step)
_convert_8u16s:

	[--SP] = (R7:4, P5:3);
	[--SP] = RETS;
	
	L0 = 0;
	L1 = 0;
	L2 = 0;
	I0=R0;
	R0+=4;
	I1=R0;
	I2=R1;
	M0=R2;
	P0=8;
	R0=[I0++M0]||R1=[I1++M0];
	(R7,R6) = BYTEUNPACK R1:0;
	LSETUP(conv_8to16_start,conv_8to16_end)LC0=P0;
	conv_8to16_start:

		(R5,R4) = BYTEUNPACK R1:0(R)||[I2++]=R6;
		R0=[I0++M0]||[I2++]=R7;
		(R7,R6) = BYTEUNPACK R1:0||[I2++]=R4;

	conv_8to16_end:
		R1=[I1++M0]||[I2++]=R5;


_convert_8u16s.end:
	RETS = [SP++];
	(R7:4, P5:3) = [SP++];
	RTS;
	NOP;

	
//void convert_16s8u(const Ipp16s *src, Ipp8u *dst, int dst_step)
.global _convert_16s8u;
_convert_16s8u:

	[--SP] = (R7:4, P5:3);
	[--SP] = RETS;
	
	I0=R0;
	R0+=4;
	I1=R0;
	I2=R1;
	R2+=-4;
	M2=R2;
	R1=8;
	M0=R1;
	P0=8;
	R0=[I0++M0]||R1=[I1++M0];
	LSETUP (conv_16to8_start,conv_16to8_end)LC0=P0;
	conv_16to8_start:
		R7 = BYTEPACK (R0,R1);
		R0=[I0++M0]||R1=[I1++M0];
		R6 = BYTEPACK (R0,R1)||[I2++]=R7||R0=[I0++M0];
	conv_16to8_end: 
		R1=[I1++M0]||[I2++M2]=R6; 

_convert_16s8u.end:
	RETS = [SP++];
	(R7:4, P5:3) = [SP++];
	RTS;
	NOP;