Questions tagged [assembler]
For questions pertaining to compiling code.
8
questions
0
votes
1
answer
454
views
I want to mmap the GPIO on Raspberry Pi 4b+ but get invalid argument. (Running Raspbian Buster)
// The c code shown here works:
int fd = open("/dev/gpiomem", O_FLAGS);
printf("fd = %d\n", fd);
long int* addr = mmap(0,
0x1000,
PROT_RDWR,
...
- 21
4
votes
1
answer
83
views
gcc does not compile code that compiles in 'as'
I'm trying to learn assembly using the raspberry pi. I have code that compiles using as but will not compile with gcc. I thought that as was the backend for gcc assembly so I'm confused why it is not ...
- 141
2
votes
1
answer
363
views
Flat Assembler Binary
I am trying to compile a program using Flat Assembler (fasm) but I can't find a binary that works for the RPi. I have tried the regular and arm versions which both complain of "Exec Format Error". ...
- 23
8
votes
1
answer
1k
views
Locked (Atomic) Register read/write
I'm coding something using direct control of GPIO, there are some good resources around for this, such as http://elinux.org/RPi_Low-level_peripherals#GPIO_hardware_hacking ; the process involves open("...
- 621
2
votes
1
answer
1k
views
ARM dissasembler
I'm attempting to do an object dump of an assembled program for the pi. I have main.o main.s main.elf and main.bin
otool -tV main.o
This results in
main.o: is not an object file
What am I doing ...
- 23
5
votes
1
answer
4k
views
Bare Metal Assembly/C(++) Programming
I'm trying to make a small os on my Raspberry Pi.
I have good assembly and strong c/c++ knowledges but I need some help.
For my first experiments I worked with Qemu and it's serial output but now I ...
- 153
20
votes
5
answers
22k
views
Writing ARM Assembly code
After getting my Raspberry Pi, I decided that I wanted to learn how to write ARM assembly code. My question is, what do I need to get started? I assume that there is already a compiler installed but I ...
- 741
15
votes
1
answer
704
views
Is the Raspberry Pi a good teaching tool for students learning assembler?
When I took an assembler course, we used a NIOS II Altera board which had a display, some LED lights and programmable buttons. One of the more useful exercises was to write a binary calculator using ...
- 255