mips assembly

Instructions

all instruction are 32 bit long

instruction fall into three categories:

R-type: register type instructions

I-type: immediate 

J-type: jump instructions

jump

There are the list of instructions we'll look at.

• beq Branches if the quantities of two registers are equal.
• bne Branches if the quantities of two registers are NOT equal.
• bgtz Branches if a quantity in a register is greater than zero (quantity is 32 bit, 2C).
• bgez Branches if a quantity in a register is greater than or equal to zero (quantity is 32 bit, 2C).
• bltz Branches if a quantity in a register is less than zero (quantity is 32 bit, 2C).
• blez Branches if a quantity in a register is less than or equal to zero (quantity is 32 bit, 2C).
• j Jump to an address
• jr Jump to an address stored in a register
• jal Jump to an address, and store the return address in a register.
• jalr Jump to an address stored in a register, and store the return address in another register.

http://www.cs.umd.edu/class/sum2003/cmsc311/Notes/