On Wed, 29 Dec 2004 10:53:54 -0800 (PST), Linus Torvalds [email protected] wrote:
Ok, I don't remember the context from the Wine lists (and it's not clear from the older emails I was cc'd on), so the "#3 signal.c" change description is a bit too vague. Jesse, willing to just point to the exact diff that you need to make Warcraft work for you (and then maybe Thomas Sailer can verify whether that part is indeed the one that causes him problems).
I have attached the diff attached in this message for the lkml.
The code in question now does
/* * Iff TF was set because the program is being single-stepped by a * debugger, don't save that information on the signal stack.. We * don't want debugging to change state. */ eflags = regs->eflags; if (current->ptrace & PT_DTRACE) eflags &= ~TF_MASK; err |= __put_user(eflags, &sc->eflags);and I guess it originally never cleared it. True?
Yes.
So does removing the conditional TF clear make everything work again?
Yes, as long as TIF_SINGLESTEP is not set in set_singlestep(). set_singlestep also sets PT_DTRACE, so as it now is, a call to the set_singlestep function will make this condition true clearing TF when run. So both the conditional TF clear and setting TIF_SINGLESTEP needs to be removed, like I show in the diff. Making these changes returns the code to a 2.6.8-ish resemblence.
For the wine people, I will try to upload the seh debug channel logs as soon as possible.
Jesse