Abstract:
An apparatus, system and method of determining an extremum are disclosed. A reference location identifier and a reference extremum are coupled. An input extremum of an input data set is determined and a corresponding location identifier of the input extremum is also determined. The input extremum is compared with the reference extremum to determine an output extremum and output location identifier, based on the comparison.
Abstract:
An instruction specifies a source value and an offset value. Upon execution of the instruction, a first result of the instruction and a second result of the instruction are generated. The first result is a first portion of the source value and the second result is a second portion of the source value.
Abstract:
A dedicated arithmetic decoding instruction is disclosed. In a particular embodiment, an apparatus includes a memory and a processor coupled to the memory. The processor is configured to execute general purpose instructions and to execute a dedicated arithmetic decoding instruction retrieved from the memory.
Abstract:
In a particular embodiment, a method is disclosed that includes receiving an operand to be normalized at a normalization logic circuit, where the operand includes a plurality of bits. The method further includes generating a zero output when a value of the operand is equal to zero and, when the value is not equal to zero, generating an output value representing a number that is one less than a count of leading bits of the operand.
Abstract:
In a particular embodiment, a method is disclosed that includes executing a single instruction to identify a location within a table stored at a memory. The single instruction is executable by a processor to extract bit field data from a first register and insert the bit field data into an index portion of a second register. The second register includes a table address portion and an index portion. The table address portion includes a table address identifying a memory location associated with a table. The table address and the bit field data combine to form an indexed address to an element within the table.
Abstract:
A method and system to combine multiple register units within a microprocessor, such as, for example, a digital signal processor, are described. A first register unit and a second register unit are retrieved from a register file structure within a processing unit, the first register unit and the second register unit being non-adjacently located within the register file structure. The first register unit and the second register unit are further combined during execution of a single instruction to form a resulting register unit. Finally, the resulting register unit is stored within the register file structure for further processing. Alternatively, a first half word unit from the first register unit and a second half word unit from the second register unit are retrieved. The first half word unit and the second half word unit are further input into corresponding high and low portions of a resulting register unit to form the resulting register unit during execution of a single instruction. Finally, the resulting register unit is stored within the register file structure for further processing.
Abstract:
Techniques for processing digital signals for a variety of applications, including in a communications (e.g., CDMA) system. A pointer location within a circular buffer is determined by establishing a length of the circular buffer, a start address that is aligned to a power of 2, and an end address located distant from the start address by the length and less than a power of 2 greater than the length. The method and system determine a current pointer location for an address within the circular buffer, a stride value of bits between the start address and the end address, a new pointer location within the circular buffer that is shifted from the current pointer location by the number of bits of the stride value. An adjusted pointer location is within the circular buffer by an arithmetic operation of the new pointer location with the length.
Abstract:
An instruction identifies a register and a memory location. Upon execution of the instruction by a processor, an item is loaded from the memory location and a shift and insert operation is performed to shift data in the register and to insert the item into the register.
Abstract:
An apparatus, system and method of determining an extremum are disclosed. A reference location identifier and a reference extremum are coupled. An input extremum of an input data set is determined and a corresponding location identifier of the input extremum is also determined. The input extremum is compared with the reference extremum to determine an output extremum and output location identifier, based on the comparison.
Abstract:
A method and system to combine corresponding half word units from multiple register units within a microprocessor, such as, for example, a digital signal processor, during execution of a single instruction are described. An instruction to combine predetermined disparate source register units from a register file structure is received within a processing unit. The instruction is then executed to combine corresponding half word units from the source register units and to input the half word units into respective portions of a resulting destination register unit. During the execution of the instruction, the predetermined source register units are identified and corresponding most significant half word units and associated data are retrieved from the identified register units. The retrieved half word units are further combined and input into a respective most significant portion of a resulting destination register unit. Similarly, corresponding least significant half word units and associated data are retrieved from the identified register units. The retrieved half word units are further combined and input into a respective least significant portion of a resulting destination register unit. Finally, the resulting destination register unit is stored into the register file structure for further processing.