SW rt,offset(rs), Store Word, *(int*)(offset+rs)=rt sw.
Iformat example lw Pc#
, may change the value in the PC register)
Iformat example lw code#
of Computer Science, UCSB In the MIPS I, II, and III architectures there must be at least one instruction between the compare instruction that sets the condition code and the branch instruction that tests it. add and sub MIPS Input / Output MIPS Instructions CS 64: Computer Organization and Design Logic Lecture #5 Winter 2020 Ziad Matni, Ph.
add and sub The 26 bits are achieved by dropping the high-order 4 bits of the address and the low-order 2 bits (which would always be 00, since addresses are always divisible by 4). see General Form of a MIPS Data Transfer Instruction Note that lw and sw are transfering 4 bytes, while lb and sb are transfering only 1 byte. Viewed 28k times Chapter 2 -Instructions: Language of the Computer -26 Concluding Remarks Measure MIPS instruction executions in benchmark programs Consider making the common case fast Consider compromises Instruction class MIPS examples SPEC2006 Int SPEC2006 FP Arithmetic add, sub, addi 16% 48% Data transfer lw, sw, lb, lbu, lh, lhu, sb, lui 35% 36% Chapter 2 -MIPS Program Flow Instructions 1 COMPUTERORGANIZATIONANDDESIGN The Hardware/Software Interface 5th Edition Chapter 2 MIPS Program Flow Instructions MIPS-32 ISA Review n Instruction Categories n Computational n Load/Store n Jump and Branch n Floating Point R0 -R31 PC HI LO Registers op op op rs rt rd sa funct rs rt immediate jump target Each MIPS instruction must belong to one of these (R-type, I-type and J-type) formats.