what can i do for this error "suffix or operands invalid for `fld'"

the code is follow , i used gcc version 4.1.2 20061115 (prerelease)
and Target: i486-linux-gnu ,
    gcc -g  testasm.c -lm -o testasm compile this code ,but get the
error
   #include <stdio.h>
#include <stdlib.h>


int main(int argc,char **argv)
{
    float arg1, arg2, add, sub, mul, div ;

    printf( "Enter two numbers : " );
    scanf( "%f%f", &arg1, &arg2 );

    /* Perform floating point Addition, Subtraction, Multiplication &
Division */
    __asm__ ( "fld %1;"
              "fld %2;"
              "fadd;"
              "fstp %0;" : "=g" (add) : "g" (arg1), "g" (arg2) ) ;

    __asm__ ( "fld %2;"
              "fld %1;"
              "fsub;"
              "fstp %0;" : "=g" (sub) : "g" (arg1), "g" (arg2) ) ;

    __asm__ ( "fld %1;"
              "fld %2;"
              "fmul;"
              "fstp %0;" : "=g" (mul) : "g" (arg1), "g" (arg2) ) ;

    __asm__ ( "fld %2;"
              "fld %1;"
              "fdiv;"
              "fstp %0;" : "=g" (div) : "g" (arg1), "g" (arg2) ) ;

    printf( "%f + %f = %f\n", arg1, arg2, add );
    printf( "%f - %f = %f\n", arg1, arg2, sub );
    printf( "%f * %f = %f\n", arg1, arg2, mul );
    printf( "%f / %f = %f\n", arg1, arg2, div );
    return 0;
}

  is it lack flags to gcc ?