some work on x11 ext

Common/Std/nolibc.c

@@ -24,23 +24,28 @@ size_t strlen(char const *s) {
   return p - s;
 }
 
-double com_std_sin(double v) {
-  double result;
-  __asm__ __volatile__("fldl %1\n\t"
-                       "fsin\n\t"
-                       "fstpl %0"
-                       : "=g"(result)
-                       : "m"(v)
-                       : "st", "st(1)");
-  return result;
+double sin(double v) {
+  double r;
+  __asm__ __volatile__("fsin" : "=t"(r) : "0"(v));
+
+  return r;
 }
 
-double com_std_cos(double v) {
-  double result;
-  __asm__ __volatile__("fldl %1\n\t"
-                       "fcos\n\t"
-                       "fstpl %0"
-                       : "=g"(result)
-                       : "m"(v));
-  return result;
+double cos(double v) {
+  double r;
+  __asm__ __volatile__("fcos" : "=t"(r) : "0"(v));
+  return r;
+}
+
+void sincos(double v, double *s, double *c) {
+  double sv, cv;
+  __asm__ __volatile__("fsincos" : "=t"(cv), "=u"(sv) : "0"(v));
+  *s = sv;
+  *c = cv;
+}
+
+double sqrt(double v) {
+  double r;
+  __asm__ volatile("sqrtss %1, %0" : "=x"(r) : "x"(v));
+  return r;
 }