diff options
Diffstat (limited to 'rtems/rtems-kernel-program.c')
-rw-r--r-- | rtems/rtems-kernel-program.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/rtems/rtems-kernel-program.c b/rtems/rtems-kernel-program.c new file mode 100644 index 0000000..6dd8028 --- /dev/null +++ b/rtems/rtems-kernel-program.c @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2022 On-Line Applications Research Corporation (OAR) + * Written by Kinsey Moore <kinsey.moore@oarcorp.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <machine/rtems-bsd-kernel-space.h> +#include <machine/rtems-bsd-thread.h> + +#include <sys/types.h> +#include <sys/kernel.h> + +#include <stdio.h> + +#include <rtems/extension.h> +#include <rtems/score/percpu.h> +#include <rtems/score/thread.h> +#include <rtems/sysinit.h> + +static size_t rtems_bsd_extension_index; + +static const rtems_extensions_table rtems_bsd_extensions = {}; + +/* + * This must only be run after the system has become multithreading such as in + * Init(). This must not be run as part of normal RTEMS initialization as part + * of a SYSINIT call. + */ +void rtems_bsd_compat_initialize(void) +{ + rtems_id ext_id; + rtems_status_code sc; + + sc = rtems_extension_create( + BSD_TASK_NAME, + &rtems_bsd_extensions, + &ext_id + ); + if (sc != RTEMS_SUCCESSFUL) { + printf("%s: cannot create extension\n", __func__); + rtems_task_suspend(RTEMS_SELF); + rtems_fatal_error_occurred(0xdeadbeef); + } + + rtems_bsd_extension_index = rtems_object_id_get_index(ext_id); +} + +static struct rtems_bsd_program_control ** +rtems_bsd_get_bsd_extension_ptr(void) +{ + Thread_Control *executing = _Thread_Get_executing(); + return ( struct rtems_bsd_program_control ** )&executing->extensions[rtems_bsd_extension_index]; +} + +struct rtems_bsd_program_control * +rtems_bsd_program_get_control_or_null(void) +{ + return *rtems_bsd_get_bsd_extension_ptr(); +} + +int +rtems_bsd_program_set_control(struct rtems_bsd_program_control *prog_ctrl) +{ + *rtems_bsd_get_bsd_extension_ptr() = prog_ctrl; + return 0; +} |