Windows XP Expert Zone Community WebLog - All Comments

re: Visit the new Expert Zone Chat Room

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re: Visit the new Expert Zone Chat Room

shami — Tue, 17 Nov 2009 13:50:46 GMT

Please help me to solve this question

I need help with the following. Here, assembly language means Y86. There should be four separate files when complete.

1) Implement dot-product of two vectors in assembly language. Assume an array of 4 elements is used to represent a vector. Should take input (1, 2, 3, 4) and (4,3,2,1)

2) Use the function developed for P1 to implement matrix multiplication in assembly language. Simply consider two 4-by-4 matrices. [0, 1, 0, 1; 1, 0, 1, 0; 0, 1, 0, 1; 1, 0, 1, 0]

3) Implement a function in assembly language to traverse a linked list and sum up all elements (non-recursively). (1)->(2)->(3)->(4)

4) Redo (3) with recursion.

Here's a bit I started with but doesn't work properly. I can call Multiply once. If I call it a second time it never gets back to the halt in Main.

# int multiply(int number_1, int number_2)

Multiply: pushl %ebp

rrmovl %esp,%ebp

mrmovl 12(%ebp),%ecx # ecx = number_1

mrmovl 8(%ebp),%edx # edx = number_2

irmovl $0, %eax # sum = 0

andl %edx,%edx

je mEnd

mLoop: addl %ecx,%eax # add to sum

irmovl $-1,%ebx #

addl %ebx,%edx # number_2--

jne mLoop # Stop when 0

mEnd:

rrmovl %ebp,%esp

popl %ebp

ret

#int dotproduct(int vector_1, int vector_2)

DotProduct: pushl %ebp

rrmovl %esp,%ebp

mrmovl 12(%ebp),%ecx # ecx = vector_1

mrmovl 8(%ebp),%edx # edx = vector_2

irmovl $0, %edi # sum = 0

irmovl $1, %ebx

mrmovl (%ecx), %eax

pushl %eax

mrmovl (%edx), %eax

pushl %eax

call Multiply

addl %eax,%edi

popl %eax

rrmovl %edi,%eax

rrmovl %ebp,%esp

popl %ebp

ret

re: Tutorial: Fix the error “Volume Control Program has not been installed” from Media Blab.com.

Mon, 16 Nov 2009 03:59:55 GMT

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re: Community Service in the name of technology: Talking with PC User Group Leaders at Consumer Electronics Show

Farenarry — Sun, 01 Nov 2009 15:57:39 GMT

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re: What's Hot: MVP sites with helpful SP2 information; Live webcasts on SP2; Chats & newsgroups; What's this blog?

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re: Forum Discussion: Selected updates won’t install on Windows XP – Neowin.net Forums.

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re: Transparent Icon Labels

Marcin — Sun, 01 Nov 2009 01:14:36 GMT

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re: Forum Discussion: How to set up TV with STB and Xbox, and TV with STB and MCE PC, the Green Button 360, September 11, 2006.

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re: Forum Discussion: Links will not open in Outlook Express e-mail, but it isn’t because of the security settings this time around – Bleeping Computer.

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