please explain me how we get %rdi %rsi %rax numbers in tables please in easy word step by step. ### Disassembled Code and Instructions#### C Code:```cint main(int argc, char **argv) { long x = 1, y = 2, z = 3; z = top(x, y); return z;}long top(long x, long y) { x = x + y; return leaf(x, y);}long leaf(long y, long z) { z = y - z; return z;}```#### Disassembled Code:- **Leaf Function:** ``` 1 00000000004004d6 : 2 4004d6: 48 89 f8 mov %rdi,%rax 3 4004d9: 48 29 f0 sub %rsi,%rax 4 4004dc: c3 retq ```- **Top Function:** ``` 5 00000000004004dc : 6 4004dc: 48 01 f7 add %rsi,%rdi 7 4004df: b8 00 00 00 00 mov $0x0,%eax 8 4004e4: e8 ec ff ff ff callq 4004d6 9 4004e9: c3 retq ```- **Main Function:** ``` 10 00000000004004ec : 11 4004ec: b9 02 00 00 00 mov $0x2,%ecx 12 4004f1: bf 03 00 00 00 mov $0x3,%edi 13 4004f6: b8 01 00 00 00 mov $0x1,%eax 14 4004fb: e8 dc ff ff ff callq 4004dc 15 400500: c3 retq ```#### Instructions Table:Fill the table with appropriate values right before the instruction executes.| Line # | PC | Instruction | %rdi |

The process of tracking and filling in the values of registers %rdi, %rsi, and %rax in a table is a…

Answered: please explain me how we get %rdi %rsi…

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please explain me how we get %rdi %rsi %rax numbers in tables please in easy word step by step.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

please explain me how we get %rdi %rsi %rax numbers in tables please in easy word step by step.

### Disassembled Code and Instructions

#### C Code:
```c
int main(int argc, char **argv) {
long x = 1, y = 2, z = 3;
z = top(x, y);
return z;
}

long top(long x, long y) {
x = x + y;
return leaf(x, y);
}

long leaf(long y, long z) {
z = y - z;
return z;
}
```

#### Disassembled Code:

- **Leaf Function:**
```
1 00000000004004d6 <leaf>:
2 4004d6: 48 89 f8 mov %rdi,%rax
3 4004d9: 48 29 f0 sub %rsi,%rax
4 4004dc: c3 retq
```

- **Top Function:**
```
5 00000000004004dc <top>:
6 4004dc: 48 01 f7 add %rsi,%rdi
7 4004df: b8 00 00 00 00 mov $0x0,%eax
8 4004e4: e8 ec ff ff ff callq 4004d6 <leaf>
9 4004e9: c3 retq
```

- **Main Function:**
```
10 00000000004004ec <main>:
11 4004ec: b9 02 00 00 00 mov $0x2,%ecx
12 4004f1: bf 03 00 00 00 mov $0x3,%edi
13 4004f6: b8 01 00 00 00 mov $0x1,%eax
14 4004fb: e8 dc ff ff ff callq 4004dc <top>
15 400500: c3 retq
```

#### Instructions Table:

Fill the table with appropriate values right before the instruction executes.

| Line # | PC | Instruction | %rdi |

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