How can I access CPU information in Linux using GCC without writing assembly code?

Accessing CPU Information in Linux: Beyond Assembly with cpuid.h**

In the quest to acquire CPU details within a Linux environment using GCC, the cpuid instruction emerges as a crucial tool. However, resorting to assembly alone can prove arduous. To circumvent this complexity, Linux provides a comprehensive solution through the cpuid.h header.

This header declares a suite of functions tailored for CPU information retrieval, obviating the need for intricate assembly code. The centerpiece of cpuid.h is the __get_cpuid_max() function, which ascertains the highest supported cpuid input value. Additionally, it unveils the CPU signature stored in the EAX register.

For retrieving cpuid data, __get_cpuid() stands as the go-to function. It meticulously examines CPU capability and delivers CPU data pertaining to the specified level within the EAX, EBX, ECX, and EDX registers.

Harnessing the power of cpuid.h empowers developers to delve into the intricacies of their CPUs without resorting to assembly acrobatics. Embracing this header ensures the availability of vital CPU information, unlocking a wealth of insights for your Linux applications.

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