From: Eric Botcazou <ebotca...@adacore.com> Date: Sun, 12 Feb 2012 21:15:26 +0100
> + load [%o1 + OFFSET (JB_CFA)], %fp > + cfi_def_cfa(%fp, 0) > +#if STACK_BIAS > + sub %fp, STACK_BIAS, %fp > + cfi_def_cfa_offset(STACK_BIAS) > +#endif I think you really need to put the proper value into the %fp register atomically here. If an interrupt comes in before you STACK_BIAS adjust the %fp, a debugger or similar could see a corrupt frame pointer.
