On 01/11, CAI Qian wrote:
>
> Looks like the following patch from Oleg has not been checked in
> ptrace testsuite yet.
> ...
> > --- step-jump-cont.c~ 2009-12-09 12:17:04.367733643 -0500
> > +++ step-jump-cont.c 2009-12-09 13:12:50.708535770 -0500
> > @@ -153,12 +153,19 @@ raise_sigusr2 (void)
> > assert (0);
> > }
> >
> > +typedef struct {
> > + unsigned long entry;
> > + unsigned long toc;
> > + unsigned long env;
> > +} func_descr_t;
> > +
> > int main (void)
> > {
> > long l;
> > int status;
> > pid_t pid;
> > REGS_TYPE (regs);
> > + func_descr_t *fp;
> >
> > setbuf (stdout, NULL);
> > atexit (cleanup);
> > @@ -214,7 +221,12 @@ int main (void)
> > #elif defined __x86_64__
> > REGS_ACCESS (regs, rip) = (unsigned long) raise_sigusr2;
> > #elif defined __powerpc__
> > - REGS_ACCESS (regs, nip) = (unsigned long) raise_sigusr2;
> > +
> > + fp = (void*)raise_sigusr2;
> > +
> > + REGS_ACCESS(regs, nip) = fp->entry;
> > + REGS_ACCESS(regs, gpr[2]) = fp->toc;
> > +
My patch was a quick and dirty hack, afaics Jan has commited the right
change, step-jump-cont.c does:
#elif defined __powerpc64__
{
/* ppc64 `raise_sigusr2' resolves to the function descriptor. */
union
{
void (*f) (void);
struct
{
void *entry;
void *toc;
}
*p;
}
const func_u = { raise_sigusr2 };
REGS_ACCESS (regs, nip) = (unsigned long) func_u.p->entry;
REGS_ACCESS (regs, gpr[2]) = (unsigned long) func_u.p->toc;
}
#elif defined __powerpc__
Oleg.
