'Inc eax' presentation slideshows

421 views • 31 slides

Today's topics

Today's topics. Multi-dimensional arrays String processing Macros. 2-dimensional arrays. Example declaration: Matrix DWORD 5 DUP(3 DUP(?)) ; 15 elements Row major order Row index first (5 rows, 3 columns) i.e., 5 rows, 3 elements per row In HLLs, reference Matrix[0][2]

393 views • 29 slides

Lecture 14: Conditional Structures Continue

Lecture 14: Conditional Structures Continue. Kip Irvine, Assembly Language for Intel-Based Computers, 5 th Edition. Compound Expression with AND (1 of 3). When implementing the logical AND operator, consider that HLLs use short-circuit evaluation

347 views • 24 slides

Computer Architecture and Assembly Language

Computer Architecture and Assembly Language. Data Representation Basics Bit - the basic unit of information: (true/false) or (1/0). Byte structure : a byte has 8 bits. 7. 6. 5. 4. 3. 2. 1. 0.

353 views • 22 slides

Practical Session 5

Practical Session 5. Addressing Modes. x86 provides a flexible scheme for computing and referring to memory addresses.

354 views • 19 slides

Conditional Loop Instructions

636 views • 18 slides

LOOPNZ Example

LOOPNZ Example. The following code finds the first positive value in an array:. .data array SWORD -3,-6,-1,-10,10,30,40,4 sentinel SWORD 0 .code mov esi,OFFSET array mov ecx,LENGTHOF array next: test WORD PTR [esi],8000h ; test sign bit pushfd ; push flags on stack add esi,TYPE array

388 views • 14 slides