Cpuid manual

Manual. • CPUID instruction updated with Hybrid information sub-leaf 1AH, SERIALIZE and TSXLDTRK support, updates to the L3 Cache Intel RDT Monitoring Ca pability Enumeration Sub-leaf, and updates to the Memory Bandwidth Allocation Enumeration Sub-leaf. CPUID must be issued with each parameter in sequence to get the entire byte null-terminated ASCII processor brand string. It is necessary to check whether the feature is present in the CPU by issuing CPUID with EAX = h first and checking if the returned value is greater or equal to h. www.doorway.ru = 0AH (* Returns Architectural Performance Monitoring leaf. *) www.doorway.ru = 0BH (* Returns Extended Topology Enumeration leaf. *) 2 www.doorway.ru =1FH (* Returns V2 Extended Topology Enumeration leaf. *) 2. 1. On Intel 64 processors, CPUID clears the high 32 bits of the RAX/RBX/RCX/RDX registers in all modes. 2.

For more information, see the manuals linked above, and the following example code. Some processors support Extended Function CPUID information. When it's supported, function_id values from 0x might be used to return information. To determine the maximum meaningful value allowed, set function_id to 0x advantage of the CPUID instruction, software developers can create software applications and tools that can execute compatibly across the widest range of Intel processor generations and models, past, present, and future. Update Support You can obtain new Intel processor signature and feature bits information from the developer’s manual. tion is also documented in the section titled “CPUID” in the AMD64 Architectural Programmer's Manual Vol- ume 3: General-Purpose and System Instructions, # Reference Documents.

Jul cpuid is a processor specific instruction used to get processor's the way to extract those information manually will give you edge. NAME. cpuid - x86 CPUID access device. DESCRIPTION. CPUID provides an interface for querying information about the x86 CPU. Nov The reference for this is the Armv8 Architecture Reference Manual; there's a list of ID registers at section K (in my revision which.