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Hatch an appropriate enum.

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Thomas Harte 2023-10-28 15:56:37 -04:00
parent 0a5c24be19
commit 3ee0fcaaeb
1 changed files with 20 additions and 0 deletions
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InstructionSets/x86/Perform.hpp
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@ -15,6 +15,26 @@
namespace InstructionSet::x86 {
/// Explains the type of access that `perform` intends to perform; is provided as a template parameter to whatever
/// the caller supplies as `MemoryT` and `RegistersT` when obtaining a reference to whatever the processor
/// intends to reference.
///
/// `perform` guarantees to validate all accesses before modifying any state, giving the caller opportunity to generate
/// any exceptions that might be applicable.
enum class AccessType {
/// The requested value will be read from.
Read,
/// The requested value will be written to.
Write,
/// The requested value will be read from and then written to.
ReadModifyWrite,
/// The requested value has already been authorised for whatever form of access is now intended, so there's no
/// need further to inspect. This is done e.g. by operations that will push multiple values to the stack to verify that
/// all necessary stack space is available ahead of pushing anything, though each individual push will then result in
/// a further `PreAuthorised` access.
PreAuthorised,
};
/// Performs @c instruction querying @c registers and/or @c memory as required, using @c io for port input/output,
/// and providing any flow control effects to @c flow_controller.
///