奇妙@helloworld

2025-11-30 19:28:18

发布于：浙江

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奇妙@helloworld

#include <unistd.h>
#include <sys/syscall.h>

int main() {
    const char* msg = "Hello,World!\n";
    size_t len = 12; 
    
    asm volatile (
        "mov $1, %%rax\n\t"       
        "mov $1, %%rdi\n\t"       
        "mov %0, %%rsi\n\t"       
        "mov %1, %%rdx\n\t"       
        "syscall"                 
        :
        : "r" (msg), "r" (len)    
        : "%rax", "%rdi", "%rsi", "%rdx", "memory"  
    );
    return 0;
}

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喵~

extern "C" int main() {
    asm volatile (
        "mov %1, %%rax\n\t"    
        "mov $1, %%rdi\n\t"    
        "mov %0, %%rsi\n\t"    
        "mov %2, %%rdx\n\t"    
        "syscall"              
        :
        : "r" ("Hello,World!\n"), "i" (1), "r" ((long)13)
        : "%rax", "%rdi", "%rsi", "%rdx", "memory"
    );
    asm volatile (
        "mov %0, %%rax\n\t"    
        "mov %1, %%rdi\n\t"    
        "syscall"              
        :
        : "i" (60), "r" ((long)0)
        : "%rax", "%rdi"
    );
}

2025-11-30 来自浙江

喵~
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喵~
我们不需要使用任何头文件

2025-11-30 来自浙江
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