stack_increase.cpp

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• Last update: 2023-10-03 14:50:28-07:00
• Link: https://codeforces.com/blog/entry/120772

Code

// Source: https://codeforces.com/blog/entry/120772
#include <bits/stdc++.h>
using namespace std;
void main_() {
    // implement your solution here
}
static void run_with_stack_size(void (*func)(void), size_t stsize) {
    char *stack, *send;
    stack = (char *)malloc(stsize);
    send = stack + stsize - 16;
    send = (char *)((uintptr_t)send / 16 * 16);
    asm volatile(
        "mov %%rsp, (%0)\n"
        "mov %0, %%rsp\n"
        :
        : "r"(send));
    func();
    asm volatile("mov (%0), %%rsp\n" : : "r"(send));
    free(stack);
}
int main() {
    run_with_stack_size(main_, 1024 * 1024 * 1024); // run with a 1 GiB stack
    return 0;
}

#line 1 "stack_increase.cpp"
// Source: https://codeforces.com/blog/entry/120772
#include <bits/stdc++.h>
using namespace std;
void main_() {
    // implement your solution here
}
static void run_with_stack_size(void (*func)(void), size_t stsize) {
    char *stack, *send;
    stack = (char *)malloc(stsize);
    send = stack + stsize - 16;
    send = (char *)((uintptr_t)send / 16 * 16);
    asm volatile(
        "mov %%rsp, (%0)\n"
        "mov %0, %%rsp\n"
        :
        : "r"(send));
    func();
    asm volatile("mov (%0), %%rsp\n" : : "r"(send));
    free(stack);
}
int main() {
    run_with_stack_size(main_, 1024 * 1024 * 1024); // run with a 1 GiB stack
    return 0;
}

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