LKBEN11149: Which general Purpose Registers are used in an x86 and AMD64 CPU and what are they used for?
Symptom
You would like to know the registers and what they are used for on normal intel architecture
Cause
none
Solution
EAX Accumulator for operands and results data.
EBX Pointer to data in the DS segment.
ECX Counter for string and loop operations.
EDX I/O pointer.
EBP Pointer to data on the stack (in the SS segment).
ESI Pointer to data in the segment pointed to by the DS register; source pointer for string operations.
EDI Pointer to data (or destination) in the segment pointed to by the ES register; destination pointer for string operations.
ESP Stack pointer (in the SS segment).
The 16-Bit Segment Registers are:
CS Code Segment
DS Data Segment
SS Stack Segment
ES Data Segment
FS Data Segment
GS Data Segment
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Author: - Keskon GmbH & Co. KG
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.