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Re: sigtrap and TF

On 05-12-07 22:23, Justin Ferguson wrote:

I suppose there was some text to go here, but anyways:

void
unsetTF(void)
{
        __asm__ __volatile__(
                                "pushf                  \n"
                                "mov    $0x100, %eax    \n"
                                "not    %eax            \n"
                                "andl   (%esp), %eax    \n"
                                "popf                   \n"
        );
}

void
setTF(void)
{
        __asm__ __volatile__(
                                "pushf                  \n"
                                "orl    $0x100, (%esp)  \n"
                                "popf                   "
        );

        return;
}

... in the context of the list, note that ~ denotes a bitwise not same in gas as in C. That is, unsetTF could use the setTF template and be:

	pushf
	andl    $~0x100, (%esp)
	popf

Rene.


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