Head. s analysis (3): Clear 0 data and pointer registers

 

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Lights@hb165.com

 

This article applies

ADI bf561 DSP

Uclinux-2008r1.5-rc3 (ported to vdsp5)

Visual DSP ++ 5.0 (Update 5)

 

Reprinted, but keep the author information

R0 = 0;

 

/* Clear out all the data and pointer REGISTERS */

R1 = R0;

R2 = R0;

R3 = R0;

R4 = R0;

R5 = R0;

R6 = R0;

 

P0 = R0;

P1 = R0;

P2 = R0;

P3 = R0;

P4 = R0;

P5 = R0;

 

Lc0 = R0;

LC1 = R0;

L0 = R0;

L1 = R0;

L2 = R0;

L3 = R0;

 

/* Clear out all the Dag REGISTERS */

B0 = R0;

B1 = R0;

B2 = R0;

B3 = R0;

 

I0 = R0;

I1 = R0;

I2 = R0;

I3 = R0;

 

M0 = R0;

M1 = R0;

M2 = R0;

M3 = R0;

Although this code is long, the function is very simple, and the Register is cleared by 0.

 

1 References

Head. s analysis (1): Save the pointer passed by U-boot)

Head. s analysis (2): syscfg configuration)