What are registers $a0 $a3 used for?
Registers $a0-$a3 (4-7) are used to pass the first four arguments to routines (remaining arguments are passed on the stack).
What is a subroutine Assembly?
In assembly language, we use the word subroutine for all subprograms to distinguish between functions used in other programming languages and those used in assembly languages. The block of instructions that constitute a subroutine can be included at every point in the main program when that task is needed.
What is the EAX register?
eax. eax is a 32-bit general-purpose register with two common uses: to store the return value of a function and as a special register for certain calculations. It is technically a volatile register, since the value isn’t preserved. Instead, its value is set to the return value of a function before a function returns.
What is the $at register in MIPS?
The $at (Assembler Temporary) register is used for temporary values within pseudo commands. It is not preserved across function calls.
How do subroutines work?
In computer programming, a subroutine is a sequence of program instructions that performs a specific task, packaged as a unit. This unit can then be used in programs wherever that particular task should be performed. The generic, umbrella term callable unit is sometimes used.
What is the MIPS architecture?
The MIPS architecture evolved from research on efficient processor organization and VLSI integration at Stanford University. Their prototype chip proved that a microprocessor with five-stage execution pipeline and cache controller could be integrated onto a single silicon chip, greatly improving performance over non-pipelined designs.
What is the regular register set in MIPS?
One of the key features of the MIPS architecture is the regular register set. It consists of the 32-bit wide program counter (PC), and a bank of 32 general-purpose registers called r0..r31, each of which is 32-bit wide.
What are the features of MIPS-IV?
MIPS-IV: an upgrade of the MIPS III. One of the key features of the MIPS architecture is the regular register set . It consists of the 32-bit wide program counter (PC), and a bank of 32 general-purpose registers called r0..r31, each of which is 32-bit wide.
How many data types are there in MIPS?
Two separate 32-bit registers called HI and LO are provided for the integer multiplication and division instructions. The original MIPS architecture defines three data-types : 32-bit word, 16-bit halfword, and 8-bit bytes. The later variants add the 64-bit double-word and floating-point data-types.
