I don’t like the Pug very much but for today I will write a simple intro tutorial. The Pug is a template engine for Node and for the browser which can make you more productive and your code more readable. It compiles to HTML and has a simplified syntax with more advanced features by building… Read More »
Let’s read from a text file named new_file.txt with an assembler program.
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[mythcat@desk fasm]$ vim read_file.fasm [mythcat@desk fasm]$ ./fasm.x64 read_file.fasm flat assembler version 1.73.16 (16384 kilobytes memory, x64) 2 passes, 261 bytes. [mythcat@desk fasm]$ ./read_file FASM : Hello, world![mythcat@desk fasm]$ |
The source code is easy to understand. This source code shows you how you can use a macro for print. The base of this source code use INT 0x80 with a rax register for many functions like open, read and close. I… Read More »
Let’s write into a text file named new_file.txt with an assembler program. First, you need to create this text file using the command touch.
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[mythcat@desk fasm]$ vim write_file.fasm [mythcat@desk fasm]$ ./fasm.x64 write_file.fasm flat assembler version 1.73.16 (16384 kilobytes memory, x64) 2 passes, 256 bytes. [mythcat@desk fasm]$ touch new_file.txt [mythcat@desk fasm]$ cat new_file.txt [mythcat@desk fasm]$ ./write_file [mythcat@desk fasm]$ cat new_file.txt FASM : Hello, world! |
The assembler FASM let us to write in the file using the INT 80 and some functions used with rax, rbx, rcx, rdx registers. For example the seek function of… Read More »
The tutorial for today is a simple one. I will show you how to delete the file created with in the last tutorial. Let’s create a new file named delete_file.fasm and used to delete the new_file.txt.
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[mythcat@desk ~]$ cd fasm/ [mythcat@desk fasm]$ vim delete_file.fasm [mythcat@desk fasm]$ ./fasm.x64 delete_file.fasm flat assembler version 1.73.16 (16384 kilobytes memory, x64) 2 passes, 170 bytes. [mythcat@desk fasm]$ ls new_file.txt new_file.txt [mythcat@desk fasm]$ ./delete_file [mythcat@desk fasm]$ ls new_file.txt ls: cannot access 'new_file.txt': No such file or directory [mythcat@desk fasm]$ |
In the file delete_file.fasm I used the int 0x80 and mov rax, 10. The kernel is accessed using… Read More »
If you want to learn assembly programming for Windows O.S. or Linux with the Intel C.P.U. then you need the FASM tool and this manual. Today I will show you how to create a file using my Fedora 31 Linux distro and FASM tool. The name of this file will be new_file.txt. The assembly program… Read More »