Which of the following are common uses of the runtime stack? (Select all that apply) O Temporarily storing the values of local variables inside subroutines O Saving the return address when a CALL instruction executes
Which of the following are common uses of the runtime stack? (Select all that apply) O Temporarily storing the values of local variables inside subroutines O Saving the return address when a CALL instruction executes
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:**
Which of the following are common uses of the runtime stack? (Select all that apply)
- ☐ Temporarily storing the values of local variables inside subroutines
- ☐ Saving the return address when a CALL instruction executes
- ☐ Passing arguments to subroutines
- ☐ Saving the values of registers that are being used for multiple purposes](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0cc153ae-b205-4fb2-9991-7cf6a21d5016%2F20644b41-c82d-4785-b766-4ae6fcbd9e6e%2Frya94rr_processed.png&w=3840&q=75)
Transcribed Image Text:**Question:**
Which of the following are common uses of the runtime stack? (Select all that apply)
- ☐ Temporarily storing the values of local variables inside subroutines
- ☐ Saving the return address when a CALL instruction executes
- ☐ Passing arguments to subroutines
- ☐ Saving the values of registers that are being used for multiple purposes
![### Code Snippet Exercise
**Consider the following code snippet:**
```assembly
mov EAX, 177
mov EBX, 20
push EAX
push 00000037h ; this is 55 in hexadecimal
pop EAX
pop EBX
```
**Task:**
Select the correct decimal values below for the `eax` and `ebx` registers after execution of this code.
**Registers:**
- **EAX**
[ Choose ]
- **EBX**
[ Choose ]
### Explanation:
1. **mov EAX, 177**: Assigns the decimal value 177 to the EAX register.
2. **mov EBX, 20**: Assigns the decimal value 20 to the EBX register.
3. **push EAX**: Pushes the current value of EAX (177) onto the stack.
4. **push 00000037h**: Pushes the hexadecimal value 37 (which is 55 in decimal) onto the stack.
5. **pop EAX**: Pops the value from the top of the stack into EAX. This will be 55 (the last value pushed).
6. **pop EBX**: Pops the next value from the stack into EBX. This will be 177 (the value previously pushed).
### Resulting Values:
- **EAX** will be **55**.
- **EBX** will be **177**.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0cc153ae-b205-4fb2-9991-7cf6a21d5016%2F20644b41-c82d-4785-b766-4ae6fcbd9e6e%2Fy4zo7q_processed.png&w=3840&q=75)
Transcribed Image Text:### Code Snippet Exercise
**Consider the following code snippet:**
```assembly
mov EAX, 177
mov EBX, 20
push EAX
push 00000037h ; this is 55 in hexadecimal
pop EAX
pop EBX
```
**Task:**
Select the correct decimal values below for the `eax` and `ebx` registers after execution of this code.
**Registers:**
- **EAX**
[ Choose ]
- **EBX**
[ Choose ]
### Explanation:
1. **mov EAX, 177**: Assigns the decimal value 177 to the EAX register.
2. **mov EBX, 20**: Assigns the decimal value 20 to the EBX register.
3. **push EAX**: Pushes the current value of EAX (177) onto the stack.
4. **push 00000037h**: Pushes the hexadecimal value 37 (which is 55 in decimal) onto the stack.
5. **pop EAX**: Pops the value from the top of the stack into EAX. This will be 55 (the last value pushed).
6. **pop EBX**: Pops the next value from the stack into EBX. This will be 177 (the value previously pushed).
### Resulting Values:
- **EAX** will be **55**.
- **EBX** will be **177**.
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