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  1. #define _GNU_SOURCE
  2. #include <string.h>
  3. #include <sys/mman.h>
  4.  
  5. int main()
  6. {
  7.     const char* str = "Hello, world!\n";
  8.     size_t len = strlen(str);
  9.  
  10.     void* mstr = mmap((void*)0x1000000,	len + 1, PROT_READ | PROT_WRITE,
  11.     	MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, 0, 0);
  12.     strcpy(mstr, str);
  13.  
  14.     __asm__(
  15.     	"int $0x80\n"
  16.         :
  17.         : "a"(4), "b"(1), "c"(mstr), "d"(len)
  18.     );
  19.     return 0;
  20. }
Success #stdin #stdout 0s 9296KB
comments (?)
stdin
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Standard input is empty
stdout
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Hello, world!
https://ideone.com/nQgysb
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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