1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 loop PROC label MOV MOV |} AND EOR LSLS BNE MOV BX ENDP } r2,#0xffffffff r3, #1 The above code was generated by compiling C code that had the following overall form: r4, r3, r0 r2, r2, r4 r2, r2, r1 label r0,r2 lr int loop(int x, int n) { int result = for (int mask = result ; mask ; mask = Your task is to fill in the missing parts of the C code, and to answer several questions. Recall that the result of the function is returned in ro. You will find it helpful to examine the assembly code before, during, and after the loop to form a consistent mapping between the registers and the program variables. (a) Which registers hold the values x, n, result, and mask? (b) What are the initial values of result and mask? (c) What is the test condition for mask? ____) { (d) What is the C expression that updates mask?
1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 loop PROC label MOV MOV |} AND EOR LSLS BNE MOV BX ENDP } r2,#0xffffffff r3, #1 The above code was generated by compiling C code that had the following overall form: r4, r3, r0 r2, r2, r4 r2, r2, r1 label r0,r2 lr int loop(int x, int n) { int result = for (int mask = result ; mask ; mask = Your task is to fill in the missing parts of the C code, and to answer several questions. Recall that the result of the function is returned in ro. You will find it helpful to examine the assembly code before, during, and after the loop to form a consistent mapping between the registers and the program variables. (a) Which registers hold the values x, n, result, and mask? (b) What are the initial values of result and mask? (c) What is the test condition for mask? ____) { (d) What is the C expression that updates mask?
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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