Consider the following assembly code, where to-t5 are temporary registers, and s

Question

Consider the following assembly code, where to-t5 are temporary registers, and s0-s9 are registers. Write the equivalent C code of the above assembly code. You are not allowed to use the goto statement. Clearly indicate how the variables used in your C code correspond to the registers in the assembly. Assuming the program is run on a VLIW processor with unlimited number of hardware resources and the latency of each instruction is 1 cycle. What is the minimal number of cycles the program can complete, assuming the initial value of s1 before entering the loop is 16? Show a schedule of the instructions

Explanation / Answer

a)int t0,*s1

do

{

t0=*s1;

s1=s1+p;

*s1=t0;

s1=s1-4;

}while(s1!=0);

-->here s1 represents the register s1,the [s1] in assembly language indicates the we are accessing the value present in the address given by value in s1. similarly *s1 in programming language indicates that we are using the value at adress given in s1.

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