Simon Kagstrom <simon.kagstrom@xxxxxx> writes:
> : "=r" (__v0) \
> : "r"(a), "r"(b), \
> "i" (__NR_##name) \
You've told gcc that the inline assembler code cares about the value
of 'm', but you haven't told it that it cares about the value of
'm[0]', 'm[1]', etc.
This exact case is covered in the documentation:
Note that in the following example the memory input is necessary,
otherwise GCC might optimize the store to x away:
int foo ()
{
int x = 42;
int *y = &x;
int result;
asm ("magic stuff accessing an 'int' pointed to by '%1'"
"=&d" (r) : "a" (y), "m" (*y));
return result;
}
Ian
