Abstract:
A processor comprising a cache, the cache comprising a cache line, an execution unit to execute an atomic primitive to responsive to executing a read instruction to retrieve a data item from a memory location, cause to store a copy of the data item in the cache line, execute a lock instruction to lock the cache line to the processor, execute at least one instruction while the cache line is locked to the processor, and execute an unlock instruction to cause the cache controller to release the cache line from the processor.
Abstract:
A computer processor with register direct branches and employing an instruction preload structure is disclosed. The computer processor may include a hierarchy of memories comprising a first memory organized in a structure having one or more entries for one or more addresses corresponding to one or more instructions. The one or more entries of the one or more addresses may have a starting address. The structure may have one or more locations for storing the one or more instructions. The computer processor may include one or more registers to which one or more corresponding instruction addresses are writable. The computer processor may include processing logic. In response to the processing logic writing the one or more instruction addresses to the one or more registers, the processing logic may to pre-fetch the one or more instructions of a linear sequence of instructions from a first memory level of the hierarchy of memories into a second memory level of the hierarchy of memories beginning at the starting address. At least one address of the one or more addresses may be the contents of a register of the one or more registers.
Abstract:
A processor includes a translation lookaside buffer (TLB) comprising a plurality of ways, wherein each way is associated with a respective page size, and a processing core, communicatively coupled to the TLB, to execute an instruction associated with a virtual memory page, identify a first way of the plurality of ways, wherein the first way is associated with a first page size, determine an index value using the virtual memory page and the first page size for the first way, determine, using the index value, a first TLB entry of the first way, and translate, using a memory address translation stored in the first TLB entry, the first virtual memory page to a first physical memory page.
Abstract:
A computer processor that implements pre-translation of virtual addresses is disclosed. The computer processor may include a register file comprising one or more registers. The computer processor may include processing logic. The processing logic may receive a value to store in a register of one or more registers. The processing logic may store the value in the register. The processing logic may designate the received value as a virtual address, the virtual address having a corresponding virtual base page number. The processing logic may translate the virtual base page number to a corresponding real base page number and zero or more real page numbers corresponding to zero or more virtual page numbers adjacent to the virtual base page number. The processing logic may further store in the register of the one or more registers the real base page number and the zero or more real page numbers.
Abstract:
A processor includes a translation lookaside buffer (TLB) comprising a plurality of ways, wherein each way is associated with a respective page size, and a processing core, communicatively coupled to the TLB, to execute an instruction associated with a virtual memory page, identify a first way of the plurality of ways, wherein the first way is associated with a first page size, determine an index value using the virtual memory page and the first page size for the first way, determine, using the index value, a first TLB entry of the first way, and translate, using a memory address translation stored in the first TLB entry, the first virtual memory page to a first physical memory page.
Abstract:
A computer processor with an address register file is disclosed. The computer processor may include a memory. The computer processor may further include a general purpose register file comprising at least one general purpose register. The computer processor may further include an address register file comprising at least one address register. The computer processor may further include having access to the memory, the general purpose register file, and the address register file. The processing logic may execute a memory access instruction that accesses one or more memory locations in the memory at one or more corresponding addresses computed by retrieving the value of an address register of the at least one register of the address register file specified in the instruction and adding a displacement value encoded in the instruction.
Abstract:
A computer processor with indirect only branching is disclosed. The computer processor may include one or more target registers. The computer processor may include processing logic in signal communication with the one or more target registers. The processing logic may execute a non-interrupting branch instruction based on a value stored in a target register of the one or more target registers. The non-interrupting branch instruction may use the one or more target registers to specify a destination address of a branch specified by the non-interrupting branch instruction.
Abstract:
A processor comprising a cache, the cache comprising a cache line, an execution unit to execute an atomic primitive to responsive to executing a read instruction to retrieve a data item from a memory location, cause to store a copy of the data item in the cache line, execute a lock instruction to lock the cache line to the processor, execute at least one instruction while the cache line is locked to the processor, and execute an unlock instruction to cause the cache controller to release the cache line from the processor.
Abstract:
A computer processor that implements pre-translation of virtual addresses is disclosed. The computer processor may include a register file comprising one or more registers. The computer processor may include processing logic. The processing logic may receive a value to store in a register of one or more registers. The processing logic may store the value in the register. The processing logic may designate the received value as a virtual address, the virtual address having a corresponding virtual base page number. The processing logic may translate the virtual base page number to a corresponding real base page number and zero or more real page numbers corresponding to zero or more virtual page numbers adjacent to the virtual base page number. The processing logic may further store in the register of the one or more registers the real base page number and the zero or more real page numbers.
Abstract:
A processor includes a plurality of physical registers and a processor core, communicatively coupled to the plurality of physical registers, the processor core to execute a process comprising a plurality of instructions to responsive to issuance of a call instruction for out-of-order execution, identify, based on a head pointer of the plurality of physical registers, a first physical register of the plurality of physical registers, store a return address in the first physical register, wherein the first physical register is associated with a first identifier, store, based on an out-of-order pointer of a call stack associated with the process, the first identifier in a first entry of the call stack, and increment, modulated by a length of the call stack, the out-of-order pointer of the call stack to point to a second entry of the call stack.