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Questions tagged [mips32]

Use this tag for questions related to the 32 bits version of the MIPS architecture instruction set. See also [tag:MIPS].

632 questions
15
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2 answers

MIPS architecture 'syscall' instruction

What is the role of syscall instruction in MIPS?
Bob Jamaica
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14
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5 answers

MIPS assembly for a simple for loop

I need to translate this C code to MIPS assembly. Here is the C code: int tmp = 0; for (int j = 0; j < 15; ++j) tmp = tmp * 2 + 3 This is my MIPS assembly code. Is it a correct translation? If you see any mistakes I would really like to…
user977154
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14
votes
5 answers

where can I find a description of *all* MIPS instructions

Does anyone know of a web site where I can find a list of 32-bit MIPS instructions/opcodes, with the following features: Clearly distinguishes between real opcodes and assembly-language macros (pseudo-instructions) Describes the instruction…
Dan Lenski
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12
votes
2 answers

What is the difference using NOP and stalls in MIPS

What difference does it make to use NOP instead of stall. Both happen to do the same task in case of pipelining. I cant understand
StevieG
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10
votes
6 answers

Why do we Sign Extend in load word instruction?

I am learning MIPS 32 bit. I wanted to ask that why do we Sign Extend the 16 bit offset (in Single Cycle Datapath) before sending it to the ALU in case of Store Word?
user379888
10
votes
1 answer

Stress-ng: RAM testing commands

Stress-ng: Can we test RAM using stress-ng? What are the commands used to test RAM on a MIPS 32 device?
Linuxknowledgeseeker
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7
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1 answer

what does .space do in mips?

I got this problem for an assignment in which we have put these number in an array and add them without using a loop. I have solved this problem but .space is confusing me. By making .space 20 do i make space for 5 words or is it doing something…
user3593450
7
votes
1 answer

Assembly MIPS - How do I store an integer from the user into memory?

So, I have no idea how assembly works or what I'm doing. I thought I did, but of course I was wrong. So here's my question - I don't even know how to let a user enter an integer so I can store it in memory. I also don't know if my variables are…
Eric Diviney
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7
votes
1 answer

The difference between 'ADD' and 'DADD'

What is the difference between 'ADD' and 'DADD' MIPS instructions? I know that 'DADD' stands for Double Word Add but I do not know the difference between 'ADD' and 'DADD'. Moreover, it appears that both instructions have the same syntax,…
user3185252
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6
votes
1 answer

Big Endian and Little Endian

Given is the snap shot of memory of a byte-addressable computer. What would be loaded into register $16 after execution of instruction lw $16, 24($17) if machine is big endian and when Little Endian. Register $17 contains 200. Now according to me,…
user379888
6
votes
1 answer

Is it possible to cross-compile D source code for MIPS?

Is it possible to cross-compile D source code for MIPS? For example, I want to compile a D "Hello, world." program that will run on TI AR7-based devices, which have MIPS32 processor and typically run Linux 2.4.17 kernel with MontaVista patches and…
XP1
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6
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4 answers

MIPS: Size of .asciiz?

When determining the size of .asciiz string, should I take into consideration the terminating character ? For example: .data string: .asciiz "Hello" The size of "string" is 5 or 6 (byte) ?
wonderingdev
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6
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2 answers

Mips Linux: Logging Kernel Panic into mtd partition

We are experiencing kernel panics in the field for our MIPS based embedded devices. How can I log the kernel panic trace in the MTD partition? Do we have to write the trace only into MTD or is it possible to write over the NFS? Can anyone explain…
user4117880
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5
votes
1 answer

Reversing a string in MIPS Assembly

I'm trying to prompt the user for the length of a string, allocate space for that string, then print it out in reverse. For the life of me, I can't figure out why this isn't working.. Sample Output: (spim) run Please enter an integer: 7 …
user595334
5
votes
3 answers

How to load memory address without using pseudo-instructions?

I'm trying to learn MIPS assembly language by myself using MARS simulator. For didactic reasons I'm limiting myself to not using pseudo-instructions. While trying to get the address of some data into a register, I ran into a problem because I cannot…
Trinidad
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