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Show the symbol table and activation record for the following function. double cubic(double x, int a,...

Show the symbol table and activation record for the following function.

double cubic(double x, int a, int b, int c, int d)

{

    double y = 0.0;

    y = a*x*x*x + b*x*x + c*x + d;

    return y;

}

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Answer #1

A.

Variable Type Byte(space)
x double 8 bytes
a Integer 2 bytes
b Integer 2 bytes
c Integer 2 bytes
d Integer 2 bytes
y double 8 bytes

B. The structure of an activation record is as follows,

0xcff3: 0000    ; local variable a <= R6 (top of stack)
0xcff4: 0000    ; local variable b
0xcff5: 0004    ; local variable c
0xcff6: 0007    ; local variable d
0xcff7: 0000    ; local variable x
0xcff8: 0000    ; local variable y <== R5
0xcff9: cfff    ; frame pointer of "cubic"
0xcffa: 300a           ;  Return address
0xcffb: 0000           ;  Return value
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