Intel Assembler 5th Edition Intel CPU small End sequence

I. Data types in the MASM assembler

　　

Ii. types of immediate numbers in Intel compilations

Iii. defining signed and unsigned integers

Four, small end sequence

In-memory data is stored in bytes, a 4-byte unsigned integer with a high position stored at a low address and a low store at a higher address.

For example 0x12345678 this integer, in memory according to memory address from small to large arrangement is: 0X78 0x56 0x34 0x12

V. Assembly Code Validation

　　

INCLUDE Irvine32.Incincludelib irvine32.libincludelib kernel32.libincludelib user32.lib.code;unsigned typevar1 DWORD 12345678h;signed Typevar2 Sdword 12345678hmain PROCmoveax0    movEbx,offset var1movECX,[EBX]PagerDumpregsmovax, [EBX]Pagerdumpregs exitmain endpend main

The assembly code reads the two bytes starting at the VAR1 address as a 16-bit integer, and the bytes read are 0x7856

Program Run Result:

Intel Assembler 5th Edition Intel CPU small End sequence