liblinux++

A hosted C++ runtime without any libc.
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echo.c (564B)

      1 #include "linux.h"
      2 
      3 static struct
      4 {
      5 	unsigned short size;
      6 	char data[0x1000 - sizeof(unsigned short)];
      7 } buf;
      8 
      9 static void putflush()
     10 {
     11 	if (buf.size && write(1, buf.data, buf.size) != buf.size)
     12 		exit(1);
     13 	buf.size = 0;
     14 }
     15 
     16 static void putch(char c)
     17 {
     18 	buf.data[buf.size++] = c;
     19 	if (c == '\n' || buf.size == sizeof buf.data)
     20 		putflush();
     21 }
     22 
     23 static void putstr(char const* s)
     24 {
     25 	while(*s)
     26 		putch(*s++);
     27 }
     28 
     29 int main(int argc, char* argv[])
     30 {
     31 	if (argc > 1)
     32 		putstr(argv[1]);
     33 	for (int i = 2; i < argc; ++i)
     34 	{
     35 		putch(' ');
     36 		putstr(argv[i]);
     37 	}
     38 	putch('\n');
     39 }