Region-based deterministic memory safety

An apparatus comprising:

• memory to store data;
• decode circuitry to decode an instruction, the instruction to include a source operand;
• and
• execution circuitry to execute the decoded instruction according to the source operand to decrypt a pointer to a portion of the data stored in the memory,
• wherein the portion of the data is to be stored in a first region of the memory, wherein the first region of the memory includes a plurality of identically sized allocation slots, wherein each slot of the plurality of identically sized allocation slots is to store per-allocation metadata, wherein the per-allocation metadata comprises allocation type information, allocation bounds information, and a reference counter.

An apparatus comprising:

• memory to store data;
• decode circuitry to decode an instruction, the instruction to include a first operand;
• and
• execution circuitry to execute the decoded instruction according to the first operand to determine a slot for an original pointer,
• wherein the original pointer is to point to a portion of the data stored in the memory, wherein the portion of the data is to be stored in a first region of the memory, wherein the first region of the memory includes a plurality of identically sized allocation slots, wherein each slot of the plurality of identically sized allocation slots is to store per-allocation metadata, wherein the per-allocation metadata comprises allocation type information, allocation bounds information, and a reference counter.

One or more non-transitory computer-readable media comprising one or more instructions that when executed on a processor configure the processor to perform one or more operations to:

• store data in memory;
• decode an instruction, the instruction to include a source operand;
• and
• execute the decoded instruction according to the source operand to encrypt a pointer to a portion of the data stored in the memory, wherein the portion of the data is to be stored in a first region of the memory, wherein the first region of the memory includes a plurality of identically sized allocation slots, wherein each slot of the plurality of identically sized allocation slots is to store per-allocation metadata, wherein the per-allocation metadata comprises allocation type information, allocation bounds information, and a reference counter.