sframe = (MonoS390StackFrame *) sframe->prev;
MONO_CONTEXT_SET_IP (new_ctx, sframe->return_address);
memcpy (&new_ctx->uc_mcontext.gregs[6], sframe->regs, (8*sizeof(gint32)));
sframe = (MonoS390StackFrame *) sframe->prev;
MONO_CONTEXT_SET_IP (new_ctx, sframe->return_address);
memcpy (&new_ctx->uc_mcontext.gregs[6], sframe->regs, (8*sizeof(gint32)));