Chuck Ebbert wrote:
> On 07/03/2007 04:18 PM, H. Peter Anvin wrote:
>> One could, though, use an indirect jump to achieve, if not as good, at
>> least most of the effect:
>>
>> movl $<patchable>,<reg>
>> jmp *<reg>
>>
>
> Yeah, but there's this GCC bug:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22448
>
> You can't even dereference labels in an ASM statement.
I wouldn't to that, though, for the existing compiler. Instead, I
would do:
void (*func)(void); /* or what's appropriate */
asm(<magic movl> : "=rm" (func));
func();
-hpa
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