Linux Assembly - cpuid - using C library calls
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Public domain
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### Compile with GNU assembler (as) - AT-T
    
    /*
     * View the CPUID VendorID string using C library calls
     * Filename: cpuid2.s
     * Compile : as -o cpuid2.o cpuid2.s
     * Link    : ld -dynamic-linker /lib/ld-linux.so.2 -o cpuid2 -lc cpuid2.o
     *
     */
    
    .section .data
    output:
            .asciz "The processor Vendor ID is '%s'\n"
    .section .bss
            .lcomm buffer, 12
    .section .text
    .global _start 
    _start:
            movl    $0, %eax
            cpuid
            movl    $buffer, %edi
            movl    %ebx, (%edi)
            movl    %edx, 4(%edi)
            movl    %ecx, 8(%edi)
    
            pushl   $buffer
            pushl   $output
            call    printf
    
            addl    $8, %esp
            pushl   $0
            call    exit
    
    
_For compiling with gcc, you have to change _start to main and compile/link with: gcc -o cpuid2 cpuid2.s_ 
    
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### Compile with Netwide Assembler (nasm) - Intel 
    
    ; View the CPUID VendorID string using C library calls
    ; Filename: cpuid2.asm
    ; Compile : nasm -f elf cpuid2.asm -l cpuid2.lst 
    ; Link    : ld -dynamic-linker /lib/ld-linux.so.2 -o cpuid2 -lc cpuid2.o
    
    extern printf
    extern exit 
    
    section .data
    output db "The processor Vendor ID is '%s'", 0xa, 0
    
    section .bss
    buffer resb 12
    
    section .text
    global _start 
    _start:
            mov         eax, 0
            cpuid
            mov         edi, buffer
            mov         [edi], ebx
            mov         [edi+4], edx
            mov         [edi+8], ecx
    
            push        buffer
            push        output
            call        printf
    
            add         esp, 8
            push        0
            call        exit
    
    
_For linking with gcc, you have to change _start to main and compile with nasm and then link with: gcc -o cpuid2 cpuid2.o_
 
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_BY: Pejman Moghadam_  
_TAG: asm, gcc, cpuid_  
_DATE: 2013-01-06 23:01:47_