First Linux assembly

The first Linux assembly-general Linux technology-Linux programming and kernel information. The following is a detailed description. Today I learned the nasm assembly language in linux and posted the source code so that I can recall it later.

Function:
Obtain CPU Information

Source code file: cpuid. s

. Section. data
Output:
. Ascii "The processor Vendor ID is 'xxxxxxxxxxxx' \ n"
. Section. text
. Globl _ start
_ Start:
Nop
Movl $0, % eax
Cpuid
Movl $ output, % edi
Movl % ebx, 28 (% edi)
Movl % edx, 32 (% edi)
Movl % ecx, 36 (% edi)
Movl $4, % eax
Movl $1, % ebx
Movl $ output, % ecx
Movl $43, % edx
Int $0x80
Movl $1, % eax
Movl $0, % ebx
Int $0x80

Compile (with debugging information ):
As-maid-o cpuid. o cpuid. s

Link:
Ld-o cpuid. o

Run:
./Cpuid

Execution result
The processor Vendor ID is 'genuineintel'