Rewrite some library functions with 64 bits ASM and the Intel syntax. Use Makefile to compile with nasm into the library called libasm.a.
No addition callings are allowed except malloc, ___error or errno_location.
✅ ft_write (man 2 write)
✅ ft_read (man 2 read)
✅ ft_strlen (man 3 strlen)
✅ ft_strcmp (man 3 strcmp)
✅ ft_strcpy (man 3 strcpy)
✅ ft_strdup (man 3 strdup, you can call to malloc)
✅ ft_list_size (like the one in the piscine)
✅ ft_list_push_front (like the one in the piscine)
❌ ft_list_remove_if (like the one in the piscine)
❌ ft_list_sort (like the one in the piscine)
❌ ft_atoi_base (like the one in the piscine)
To complete this project successfully, you should understand, what type of problem we need to solve.
I personally recommend writing functions in the order they're listed above.
-> By working on ft_write and ft_read, you're dealing with syscalls, errno and how nasm code must be orginize.
-> ft_strlen - how counter works, how to write loops and how to return values from functions
-> ft_strcmp - how to compare two blocks of memory, how to calculate
-> ft_strcpy - how to transfer values from one block of memory to another
-> ft_strdup - how to extern functions (ft_strlen, ft_strcpy, malloc), how to call functions (calling convention)
-> ft_list_size - the only difference with ft_strlen is lenght of struct -
-> ft_list_push_front - how to work with pointers and how to malloc block of memory for struct
-> ft_list_remove_if - how to compare two blocks of memory and how to free block of memory
-> ft_list_sort - sort list with asm
-> ft_atoi_base - rewrite atoi base (deal with calculations)
| Links | About |
|---|---|
| https://cs.lmu.edu/~ray/notes/nasmtutorial/ | first step in nasm |
| https://cs.brown.edu/courses/cs033/docs/guides/x64_cheatsheet.pdf | great cheatsheet |
| https://www.cs.uaf.edu/2015/fall/cs301/lecture/09_25_structs.html | Data Structures in Assembly |
| https://github.com/HudsonSchumaker/x86_64-NASM/blob/master/macOS-nasm-codes.md | NASM Assembler codes for macOS |
| https://learn.microsoft.com/en-us/cpp/build/x64-software-conventions?redirectedfrom=MSDN&view=msvc-170 | calling convention |
Final grade: 110/125