The book “Programming from the ground up”. It’s easy for you to learn assembly in depth on your own,Įven if the material is designed for x86.
OS X PROGRAMMING TUTORIAL 64 BIT
The 64 bit assembly looks more vague than the tutorials globl _main _main: pushq %rbp movq %rsp, %rbp movq ( %rip ), %rdi movb $0, %al callq _printf popq %rbp movl $0x2000001, %eax syscall # hello_asm2.s # as hello_asm2.s -o hello_asm2.o # ld hello_asm2.o -e _main -lc -o hello_asm2. A hello worldĮxample using printf should be trivial to read:ġ 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
You cannot pass more than 6 parameters in syscall, norĬan you put the parameters on the stack. Before learning about nasm, let’s make sure you can type in and run programs. You will write both (1) standalone programs and (2) programs that integrate with C.
OS X PROGRAMMING TUTORIAL HOW TO
It uses %rdi, %rsi, %rdx, %r10, %r8 and %r9. This tutorial will show you how to write assembly language programs on the x86-64 architecture. The register used for syscall parameters are a littleīit different than the normal function call. Read Mach-O Programming Topics: x86-64 Code Model. The global variable str can only be accessed through GOT globl _main _main: movl $0x2000004, %eax # preparing system call 4 movl $1, %edi # STDOUT file descriptor is 1 movq ( %rip ), %rsi # The value to print movq $100, %rdx # the size of the value to print syscall movl $0, %ebx movl $0x2000001, %eax # exit 0 syscall # hello_asm.s # as hello_asm.s -o hello_asm.o # ld hello_asm.o -e _main -o hello_asm. Variance of register %rdi and the instruction is movl (mov long) insteadĪ system call, and how to call a function.ġ 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Since the parameter is type int, we use 32 bit The exit() function only need one integer parameter, therefore we put If the class is SSE, the next available vector register is used, the registersĪre taken in the order from %xmm0 to %xmm7.If the class is INTEGER, the next available register of the sequence %rdi,.It contains unaligned fields, it has class MEMORY. If the size of an object is larger than four eight bytes, or If the class is MEMORY, pass the argument on the stack.The rules for parameter passing can be found in System V I just copy whatever a normal code produces. The module Tkinter is an interface to the Tk GUI. Tk and Tkinter apps can run on most Unix platforms. You can make windows, buttons, show text and images amongst other things. I don’t know a good answer of how to chose a good stack address. Tkinter (GUI Programming) Tkinter is a graphical user interface (GUI) module for Python, you can make desktop apps with Python. On the System V Application Binary Interface it saysĪlthough the AMD64 architecture uses 64-bit pointers, implementationsĪre only required to handle 48-bit addresses. When setting the stack size, you also have to set the stack address. Ld stack.o -stack_size 0x4000 -stack_addr 0x7fff5fbff000 -lc -e _start -o stack
0 kommentar(er)
