working dos vga writes!

Common/Std/nolibc.c

@@ -24,6 +24,8 @@ size_t strlen(char const *s) {
   return p - s;
 }
 
+#if COM_DEF_CPU == COM_DEF_CPU_AMD64 || COM_DEF_CPU == COM_DEF_CPU_X86
+
 double sin(double v) {
   double r;
   __asm__ __volatile__("fsin" : "=t"(r) : "0"(v));
@@ -49,3 +51,17 @@ double sqrt(double v) {
   __asm__ volatile("sqrtss %1, %0" : "=x"(r) : "x"(v));
   return r;
 }
+
+#else
+
+double sin(double v) { return __builtin_sin(v); }
+
+double cos(double v) { return __builtin_cos(v); }
+
+void sincos(double v, double *s, double *c) {
+  return __builtin_sincos(v, s, c);
+}
+
+double sqrt(double v) { return __builtin_sqrt(v); }
+
+#endif