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2025/WI System Program/Architecture (CS-205-01)

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In the executable final_gdb, in the function caseFun(), there is a jmp *eax instruction. Before that instruction executes, what is in eax (in hex)?

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In the executable final_gdb, what 4 byte value (in hex) is stored at 0x8048540?

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In the executable final_gdb, what argument (i.e. the value that gets stored in caseFun's parameter), was passed to the function caseFun (in hex)?

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What is in eax (in base 10) after the following assembly code executes:

804841b:  55                     push  %ebp

804841c:  89 e5                  mov   %esp,%ebp

804841e:  83 ec 10               sub   $0x10,%esp

8048421:  c7 45 f4 0e 00 00 00   movl  $0xe,-0xc(%ebp)

8048428:  c7 45 f8 0a 00 00 00   movl  $0xa,-0x8(%ebp)

804842f:  8b 45 f4               mov   -0xc(%ebp),%eax

8048432:  0f af 45 f8            imul  -0x8(%ebp),%eax

8048436:  89 45 fc               mov   %eax,-0x4(%ebp)

8048439:  8b 45 fc               mov   -0x4(%ebp),%eax

804843c:  c9                     leave

804843d:  c3                     ret

 

 

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What is in eax (in base 10) after the following assembly code executes:

804843e:  55                     push  %ebp

804843f:  89 e5                  mov   %esp,%ebp

8048441:  83 ec 10               sub   $0x10,%esp

8048444:  c7 45 fc 00 00 00 00   movl  $0x0,-0x4(%ebp)

804844b:  83 45 fc 01            addl  $0x1,-0x4(%ebp)

804844f:  c1 65 fc 04            shll  $0x4,-0x4(%ebp)

8048453:  8b 45 fc               mov   -0x4(%ebp),%eax

8048456:  c9                     leave

8048457:  c3                     ret

 

 

 

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What's it called when a VM system is constantly paging, to the exclusion of most application level processing
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Accessing a valid VM address that isn't loaded into physical memory causes what?

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If a *nix app tries to read or write an illegal memory location what happens?
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When using virtual memory, the area on disk used as "memory" is called what?

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Which of the following are benifits of Virtual Memory?
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