integer.cpp and g++ 3.2 in Crypto++ 5.0

[Stephen Zander]

The following from integer.cpp in Crypto++ 5.0 chokes, complaining
about not being able to find a register in class `GENERAL_REGS' while
reloading `asm'

__attribute__((regparm(3))) word PentiumOptimized::Add(word *C, const word *A, const 
word *B, unsigned int N)
{
        assert (N%2 == 0);

        register word carry, temp;

        __asm__ __volatile__(
                        "push %%ebp;"
                        "sub %3, %2;"
                        "xor %0, %0;"
                        "sub %4, %0;"
                        "lea (%1,%4,4), %1;"
                        "sar $1, %0;"
                        "jz 1f;"

                "0:;"
                        "mov 0(%3), %4;"
                        "mov 4(%3), %%ebp;"
                        "mov (%1,%0,8), %5;"
                        "lea 8(%3), %3;"
                        "adc %5, %4;"
                        "mov 4(%1,%0,8), %5;"
                        "adc %5, %%ebp;"
                        "inc %0;"
                        "mov %4, -8(%3, %2);"
                        "mov %%ebp, -4(%3, %2);"
                        "jnz 0b;"

                "1:;"
                        "adc $0, %0;"
                        "pop %%ebp;"

                : "=aSD" (carry), "+r" (B), "+r" (C), "+r" (A), "+r" (N), "=r" (temp)
                : : "cc", "memory");

        return carry;
}

Any suggestions other than conditonalising this code for gcc < 3.2?

-- 
Stephen

They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety -- Benjamin Franklin %