小猪爱拱地

MIPS 有32个寄存器（0～31), 每个寄存器各有不同的用途。寄存器 zero (  0):    0 常量。不能保存数据寄存器 at   (1):        预留给 汇编编译器用寄存器  v0 (2)             v1 (3) :         这两个寄存器用来保存函数的返回值寄存器 a0 (4)           a1 (5)

When a program runs on a single-CPU machine, the hardware performs the necessary bookkeeping to ensure that the program executes as if all memory operations were performed inthe order specified by t

C flag:For a subtraction, including the comparison instructionCMP, C is set to 0 if the subtraction produced a borrow (that is, an unsigned underflow), and to 1 otherwise.Z flag: Is set to 1 if th

very practical general-purpose computing architecture has a mechanism of conditionally executing some code. Such mechanisms are used to implement theif construct in C, for example, in addition to se

1. 通用寄存器 r0 ~r15

Memory access ordering - an introductionPosted by leiflindholm in ARM Processors on Mar 22, 2011 3:36:00 PM I recently gave a presentation at the Embedded Linux Conference Europe 2010 called

Memory access ordering part 2 - barriers and the Linux kernelPosted by leiflindholm in ARM Processors on Apr 11, 2011 4:05:00 PM My previous post provided an introduction to the concept of mem

Memory access ordering part 3 - memory access ordering in the ARM ArchitecturePosted by leiflindholm in ARM Processors on Oct 19, 2011 6:36:00 PM In my previous posts, I have introduced th

To make it easier to navigate this post, here are the contents:-------------------------------------- A. Data Hazards 1. Needing to forward 2. Needing to stall 3. Not needing anything