* procfs.c (dbx_link_bpt_addr): New static global variable.

    * procfs.c (dbx_link_bpt_addr): New static global variable.
        (dbx_link_shadow_contents): New static global variable.
        (procfs_wait, case <PR_SYSEXIT>): Handle syssgi events.
        (procfs_wait, case <FLTBPT>): Remove the __dbx_link brekapoint
        if we just hit it.
        (procfs_init_inferior): Enable syssgi() syscall trace if appropriate.
        Reset dbx_link_bpt_addr as the address of __dbx_link() may change
        from run to run.
        (procfs_create_inferior): Remove syssgi syscall-exit notifications
        after the inferior has been forked.
        (remove_dbx_link_breakpoint): New function.
        (dbx_link_addr): New function.
        (insert_dbx_link_bpt_in_file): New function.
        (insert_dbx_link_bpt_in_region): New function.
        (insert_dbx_link_breakpoint): New function.
        (proc_trace_syscalls_1): New function, extracted from
        proc_trace_syscalls.
        (proc_trace_syscalls): Replace extract code by call to
        proc_trace_syscalls_1.
        * solib-irix.c (disable_break): Remove stop_pc assertion, as it
        is no longer valid.