1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * OpenRISC asm-offsets.c
4 *
5 * Linux architectural port borrowing liberally from similar works of
6 * others. All original copyrights apply as per the original source
7 * declaration.
8 *
9 * Modifications for the OpenRISC architecture:
10 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
12 *
13 * This program is used to generate definitions needed by
14 * assembly language modules.
15 *
16 * We use the technique used in the OSF Mach kernel code:
17 * generate asm statements containing #defines,
18 * compile this file to assembler, and then extract the
19 * #defines from the assembly-language output.
20 */
21
22 #include <linux/signal.h>
23 #include <linux/sched.h>
24 #include <linux/kernel.h>
25 #include <linux/errno.h>
26 #include <linux/string.h>
27 #include <linux/types.h>
28 #include <linux/ptrace.h>
29 #include <linux/mman.h>
30 #include <linux/mm.h>
31 #include <linux/io.h>
32 #include <linux/thread_info.h>
33 #include <linux/kbuild.h>
34 #include <asm/page.h>
35 #include <asm/processor.h>
36
37 int main(void)
38 {
39 /* offsets into the task_struct */
40 DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
41 DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
42 DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
43 DEFINE(TASK_MM, offsetof(struct task_struct, mm));
44 DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
45
46 /* offsets into thread_info */
47 DEFINE(TI_TASK, offsetof(struct thread_info, task));
48 DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
49 DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
50 DEFINE(TI_KSP, offsetof(struct thread_info, ksp));
51
52 DEFINE(PT_SIZE, sizeof(struct pt_regs));
53
54 /* Interrupt register frame */
55 DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
56 DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
57
58 DEFINE(NUM_USER_SEGMENTS, TASK_SIZE >> 28);
59 return 0;
60 }
61
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