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Stack Usage


The latest version of this topic can be found at Stack Usage.

All memory beyond the current address of RSP is considered volatile: The OS, or a debugger, may overwrite this memory during a user debug session, or an interrupt handler. Thus, RSP must always be set before attempting to read or write values to a stack frame.

This section discusses the allocation of stack space for local variables and the alloca intrinsic.

x64 Software Conventions