Question

Please do the following problems

1. translate into RISC-V Assembly

variable rpt in x19 register.

if(rpt>0){

rpt=rpt-1;

goto loop

}

2. Translate the following Risc-V code into C.

variable 'i' in register x5, variable 'result' in x6 ,base address of integer 'memarray' in x10

   addi x6,x0,0

   addi x29,x0,100

LOOP: ld x7,0(x10)

   add x5,x5,x7

   addi x10,x10,8

   addi x6,x6,1

   blt x6,x29, LOOP

Answer 1

1. We are storing 0 to x10 register for comparison to rpt variable. And x19 register is used to store rpt variable.

add x10, x0, x0 # x10=0

Loop:

bge x10, x19, Exit #if rpt <=0 then exit

addi x19, x19, -1 #rpt= rpt-1

j Loop #iterate

Exit

2. Confusion in this part of answer.

Result=0; i=0; j=0;

If(result<100)

{ i=i+a[j];

j=j+8;

result=result+1;

}