LXR linux/arch/sparc/kernel/asm-offsets.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * This program is used to generate definitions needed by
   4 * assembly language modules.
   5 *
   6 * We use the technique used in the OSF Mach kernel code:
   7 * generate asm statements containing #defines,
   8 * compile this file to assembler, and then extract the
   9 * #defines from the assembly-language output.
  10 *
  11 * On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
  12 */
  13
  14#include <linux/sched.h>
  15#include <linux/mm_types.h>
  16// #include <linux/mm.h>
  17#include <linux/kbuild.h>
  18
  19#include <asm/hibernate.h>
  20
  21#ifdef CONFIG_SPARC32
  22int sparc32_foo(void)
  23{
  24        DEFINE(AOFF_thread_fork_kpsr,
  25                        offsetof(struct thread_struct, fork_kpsr));
  26        return 0;
  27}
  28#else
  29int sparc64_foo(void)
  30{
  31#ifdef CONFIG_HIBERNATION
  32        BLANK();
  33        OFFSET(SC_REG_FP, saved_context, fp);
  34        OFFSET(SC_REG_CWP, saved_context, cwp);
  35        OFFSET(SC_REG_WSTATE, saved_context, wstate);
  36
  37        OFFSET(SC_REG_TICK, saved_context, tick);
  38        OFFSET(SC_REG_PSTATE, saved_context, pstate);
  39
  40        OFFSET(SC_REG_G4, saved_context, g4);
  41        OFFSET(SC_REG_G5, saved_context, g5);
  42        OFFSET(SC_REG_G6, saved_context, g6);
  43#endif
  44        return 0;
  45}
  46#endif
  47
  48int foo(void)
  49{
  50        BLANK();
  51        DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
  52        BLANK();
  53        DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
  54        BLANK();
  55        DEFINE(VMA_VM_MM,    offsetof(struct vm_area_struct, vm_mm));
  56
  57        /* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
  58        return 0;
  59}
  60
  61