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

   1/*
   2 * This program is used to generate definitions needed by
   3 * assembly language modules.
   4 *
   5 * We use the technique used in the OSF Mach kernel code:
   6 * generate asm statements containing #defines,
   7 * compile this file to assembler, and then extract the
   8 * #defines from the assembly-language output.
   9 *
  10 * On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
  11 */
  12
  13#include <linux/sched.h>
  14// #include <linux/mm.h>
  15
  16#define DEFINE(sym, val) \
  17        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  18
  19#define BLANK() asm volatile("\n->" : : )
  20
  21int foo(void)
  22{
  23        DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
  24        BLANK();
  25        /* XXX This is the stuff for sclow.S, kill it. */
  26        DEFINE(AOFF_task_pid, offsetof(struct task_struct, pid));
  27        DEFINE(AOFF_task_uid, offsetof(struct task_struct, uid));
  28        DEFINE(AOFF_task_gid, offsetof(struct task_struct, gid));
  29        DEFINE(AOFF_task_euid, offsetof(struct task_struct, euid));
  30        DEFINE(AOFF_task_egid, offsetof(struct task_struct, egid));
  31        /* DEFINE(THREAD_INFO, offsetof(struct task_struct, stack)); */
  32        DEFINE(ASIZ_task_uid,   sizeof(current->uid));
  33        DEFINE(ASIZ_task_gid,   sizeof(current->gid));
  34        DEFINE(ASIZ_task_euid,  sizeof(current->euid));
  35        DEFINE(ASIZ_task_egid,  sizeof(current->egid));
  36        BLANK();
  37        DEFINE(AOFF_thread_fork_kpsr,
  38                        offsetof(struct thread_struct, fork_kpsr));
  39        BLANK();
  40        DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
  41
  42        /* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
  43        return 0;
  44}
  45