arch/s390/kernel/asm-offsets.c

   1 /*
   2  * Generate definitions needed by assembly language modules.
   3  * This code generates raw asm output which is post-processed to extract
   4  * and format the required data.
   5  */
   6
   7 #include <linux/config.h>
   8 #include <linux/sched.h>
   9
  10 /* Use marker if you need to separate the values later */
  11
  12 #define DEFINE(sym, val, marker) \
  13         asm volatile("\n->" #sym " %0 " #val " " #marker : : "i" (val))
  14
  15 #define BLANK() asm volatile("\n->" : : )
  16
  17 int main(void)
  18 {
  19         DEFINE(__THREAD_info, offsetof(struct task_struct, thread_info),);
  20         DEFINE(__THREAD_ksp, offsetof(struct task_struct, thread.ksp),);
  21         DEFINE(__THREAD_per, offsetof(struct task_struct, thread.per_info),);
  22         DEFINE(__THREAD_mm_segment,
  23                offsetof(struct task_struct, thread.mm_segment),);
  24         BLANK();
  25         DEFINE(__TASK_pid, offsetof(struct task_struct, pid),);
  26         BLANK();
  27         DEFINE(__PER_atmid, offsetof(per_struct, lowcore.words.perc_atmid),);
  28         DEFINE(__PER_address, offsetof(per_struct, lowcore.words.address),);
  29         DEFINE(__PER_access_id, offsetof(per_struct, lowcore.words.access_id),);
  30         BLANK();
  31         DEFINE(__TI_task, offsetof(struct thread_info, task),);
  32         DEFINE(__TI_domain, offsetof(struct thread_info, exec_domain),);
  33         DEFINE(__TI_flags, offsetof(struct thread_info, flags),);
  34         DEFINE(__TI_cpu, offsetof(struct thread_info, cpu),);
  35         DEFINE(__TI_precount, offsetof(struct thread_info, preempt_count),);
  36         BLANK();
  37         DEFINE(__PT_ARGS, offsetof(struct pt_regs, args),);
  38         DEFINE(__PT_PSW, offsetof(struct pt_regs, psw),);
  39         DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs),);
  40         DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2),);
  41         DEFINE(__PT_ILC, offsetof(struct pt_regs, ilc),);
  42         DEFINE(__PT_TRAP, offsetof(struct pt_regs, trap),);
  43         DEFINE(__PT_SIZE, sizeof(struct pt_regs),);
  44         BLANK();
  45         DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain),);
  46         DEFINE(__SF_GPRS, offsetof(struct stack_frame, gprs),);
  47         DEFINE(__SF_EMPTY, offsetof(struct stack_frame, empty1),);
  48         return 0;
  49 }