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Solution to Problem 2.19.4

Solution to Problem 2.19.4. Recitation #1 (Week 2) ECEN350 Prof. Choi. a)f( a,b,c )= func ( func ( a,b ),c). f: addi $sp,$sp,–8 sw $ra,4($sp) sw $s0,0($sp) move $s0,$a2 jal func #v0= func ($a0,$a1)= func ( a,b ) move $a0,$ v0 # $a0= func ( a,b ) move $a1,$ s0 # $a1=c

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Solution to Problem 2.19.4

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  1. Solution to Problem2.19.4 Recitation #1 (Week 2) ECEN350 Prof. Choi

  2. a)f(a,b,c)=func(func(a,b),c) f: addi $sp,$sp,–8 sw$ra,4($sp) sw$s0,0($sp) move $s0,$a2 jalfunc #v0=func($a0,$a1)=func(a,b) move $a0,$v0 # $a0= func(a,b) move $a1,$s0 # $a1=c jalfunc # v0=func($a0,$a1)=func($v0,c)=func(func(a,b),c) lw$ra,4($sp) lw$s0,0($sp) addi$sp,$sp,8 jr$ra

  3. b) f(a,b,c)=func(a,b)+func(b,c) f: addi $sp,$sp,–12 sw$ra,8($sp) sw$s1,4($sp) sw$s0,0($sp) move $s0,$a1 move $s1,$a2 jalfunc # $v0=func($a0,$a1)=func(a,b) move $a0,$s0 # $a0=b move $a1,$s1 #$a1=c move $s0,$v0 # $s0=$v0=func(a,b) jalfunc; #$v0=func($a0,$a1)=func(b,c) add $v0,$v0,$s0 #$v0=func(a,b)+func(b,c) lw$ra,8($sp) lw$s1,4($sp) lw$s0,0($sp) addi$sp,$sp,12 jrra

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