Jump table for the swi statement is given below. You can asume that th first entry in the jump table is for the case when y-0. Ox Sa0: Oxf70 Ox5as: Oxf6b movq srdi, rax cmpq $7, Brsi Oxf6r 160: f63: long fun (long x, long y)i long result - 0; switch (y) ja jmpq *0x5a0 (, ersi, 8) addq $20, srax 167: f69: E6b: retq decq srax retq leaq (, Srax,8), Srcx subq trax, rcx movq srcx, rax andq rsi, irax retq case 170: case 173: Ox5b0: Oxf6t result (74: Ox5b8: Oxf92 break; E8c: OxSc0: Oxt6b f8f: OxSc8: Oxfr6f case result f92: Ox Sd0: Oxf€f break; 195: Ox5d8: 0xf74 case case result break; default: result x: return result; Consider the above C code and the x86- 64 assembly code that implements the branches of the switch statement of C code. Fill in the blank portions of the C code above to reproduce the function corresponding to the given assembly code. The jump table is also given.
Jump table for the swi statement is given below. You can asume that th first entry in the jump table is for the case when y-0. Ox Sa0: Oxf70 Ox5as: Oxf6b movq srdi, rax cmpq $7, Brsi Oxf6r 160: f63: long fun (long x, long y)i long result - 0; switch (y) ja jmpq *0x5a0 (, ersi, 8) addq $20, srax 167: f69: E6b: retq decq srax retq leaq (, Srax,8), Srcx subq trax, rcx movq srcx, rax andq rsi, irax retq case 170: case 173: Ox5b0: Oxf6t result (74: Ox5b8: Oxf92 break; E8c: OxSc0: Oxt6b f8f: OxSc8: Oxfr6f case result f92: Ox Sd0: Oxf€f break; 195: Ox5d8: 0xf74 case case result break; default: result x: return result; Consider the above C code and the x86- 64 assembly code that implements the branches of the switch statement of C code. Fill in the blank portions of the C code above to reproduce the function corresponding to the given assembly code. The jump table is also given.
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
Related questions
Question

Transcribed Image Text:Jump table for the swi
statement is given below.
You can assume that the
first entry in the jump table
is for the case when y=0.
movq rdi, $rax
cmpq $7, rsi
ja
jmpq *0x5a0 (, 8rsi,8)
addq $20, Srax
retq
decq rax
retq
leaq (,8rax,8), 8rcx
subq rax, rcx
movq rex, rax
andq 8rsi, rax
retq
f60:
f63:
167:
Oxf6f
long fun (long x, long y) I
long result 0;
switch (y)I
f69:
f6b:
f6f:
Ox5a0: Oxf70
case
Ox5a8: 0xf ób
Ox5b0: Oxf6f
f70:
case
173:
result
f74:
Ox5b8: Oxf92
break;
£8c:
OxSc0: Oxfeb
case
f8f:
f6fא5c8:0א0
rosult
f92:
Ox5d0: OxfEf
=
break;
f95:
Ox5d8: 0xf74
case
case
result =
break;
default:
result = x;
return result;
Consider the above C code and the x86-
64 assembly code that implements the
branches of the switch statement of C
code.
Fill in the blank portions of the C code
above to
reproduce the function
corresponding to the given assembly
code. The jump table is also given.
CamScanner ile tarandı
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