Add check for code section size, fix interp float operations (#1480)

And enable classic interpreter instead fast interpreter when llvm jit is enabled,
so as to fix the issue that llvm jit cannot handle opcode drop_64/select_64.

core/shared/platform/alios/platform_internal.h

@@ -52,11 +52,13 @@ double fmax(double x, double y);
 double rint(double x);
 double fabs(double x);
 double trunc(double x);
+float sqrtf(float x);
 float floorf(float x);
 float ceilf(float x);
 float fminf(float x, float y);
 float fmaxf(float x, float y);
 float rintf(float x);
+float fabsf(float x);
 float truncf(float x);
 int signbit(double x);
 int isnan(double x);