i’m getting a general protection fault and i don’t know why, i send a interrupt $0 and i get the message : Divide error 0 so it’s good but then i got a loop of general protection fault and then it segfault. here my code : init_tables.c #include <k/types.h> #include "io.h" #include "init_tables.h" extern void ..
I’m trying to write a linear search subroutine in x64 assembly that return the index of the target It takes four parameter. This function will scan through an array iteratively until it finds the target element or reaches the end of the array. The function takes in three parameters. The first parameter is a pointer ..
The do_compare function is in the libstdc++ library. It basically checks two strings and returns -1, 1, or 0 accordingly. Here is the c++ code: template<typename _CharT> int collate<_CharT>:: do_compare(const _CharT* __lo1, const _CharT* __hi1, const _CharT* __lo2, const _CharT* __hi2) const { // strcoll assumes zero-terminated strings so we make a copy // and ..
The do_compare function is in the libstdc++ library. It basically checks two strings and returns -1, 1, or 0 accordingly. Here is the C++ code: template<typename _CharT> int collate<_CharT>:: do_compare(const _CharT* __lo1, const _CharT* __hi1, const _CharT* __lo2, const _CharT* __hi2) const { // strcoll assumes zero-terminated strings so we make a copy // and ..
I’m trying to figure out how to execute arbitrary code on Windows 10. I feel like this code should work, but it’s giving me an Access violation writing location error. #include <iostream> #include <vector> #include <Windows.h> // x64 assembly #define ret (uint8_t)(0xc3) #define nop (uint8_t)(0x90) int main() { std::vector<uint8_t> raw_code = { nop, ret }; ..
The function I want to call is a function of a class: void D3DBase::SetTexture(const std::string& path); When i call it with asm block it works, but It was giving an error when I built it in release mode, then when I checked it from memory I realized that I needed to shift the string offset ..
I’m trying to wrote two function that calculate the product of two number and the power of one to the other, and I’m runing it in a c++ file. We are not allowed to use any imul instruction in our code The first subroutine will compute the product of the two integer parameters passed in. ..
I’m trying to wrote two function that calculate the product of two number and the power of one to the other, and I’m runing it in a c++ file Here is my expected output Enter integer 1: 3 Enter integer 2: 2 Product: 6 Power: 9 However, this is what I got Enter interger 1: ..
I noticed that here is a conflict between this doc, specifically on the description of "6.47.2.6 Clobbers and Scratch Registers", and this tutorial example, specifically on "Here we load ecx with count, eax with fill_value, and edi with dest. Why make GCC do it instead of doing it ourselves? Because GCC, in its register allocating, ..
i’m trying to make c++ and asm work together with real values, i know that if i want to return from asm to c++ float or double i just need to leave it in st(0) (as i should leave return value in eax in case of integer and others), but what if i want to ..
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