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Problem A Consider the following blocks of code: Assembly Code: C Code file hw4a.c text globl main type main, @function main: pushq%rbp mova %rsp, Erbp

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Problem A Consider the following blocks of code: Assembly Code: C Code file "hw4a.c" text globl main type main, @function main: pushq%rbp mova %rsp, Erbp movl $1889785064, -16(%rbp) movl $0, -12%rbp) movl $-1,-41%rbp) movl $0,-8(%rbp) jmp L2 int main(){ unsigned x = int c = 0; ints= for(int i = 0; S = if( X X 14: x=_ return 0; movi -16(%rbp), %eax andl $1,%eax movl %eax, -41%rbp) cmpl $0, -4(%rbp) jne .L3 addl $1,-12%rbp) L3: shrl $4, -16(%rbp) addl $1,-8(%rbp) .L2: cmpl $7,-8(%rbp) jle .L4 movl $0, %eax popq %rbp ret The assembly code on the left came from the skeleton C file on the right after optimizing with-00. ("gcc-00-S-fno- asynchronous-unwind-tables", the last option was used to disable cfi directives). Complete the C code based on the Assembly code given. It may help to first fill out the table below to map the registers/addresses to the C variables Assembly address/register C variable Problem A Consider the following blocks of code: Assembly Code: C Code file "hw4a.c" text globl main type main, @function main: pushq%rbp mova %rsp, Erbp movl $1889785064, -16(%rbp) movl $0, -12%rbp) movl $-1,-41%rbp) movl $0,-8(%rbp) jmp L2 int main(){ unsigned x = int c = 0; ints= for(int i = 0; S = if( X X 14: x=_ return 0; movi -16(%rbp), %eax andl $1,%eax movl %eax, -41%rbp) cmpl $0, -4(%rbp) jne .L3 addl $1,-12%rbp) L3: shrl $4, -16(%rbp) addl $1,-8(%rbp) .L2: cmpl $7,-8(%rbp) jle .L4 movl $0, %eax popq %rbp ret The assembly code on the left came from the skeleton C file on the right after optimizing with-00. ("gcc-00-S-fno- asynchronous-unwind-tables", the last option was used to disable cfi directives). Complete the C code based on the Assembly code given. It may help to first fill out the table below to map the registers/addresses to the C variables Assembly address/register C variable

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