arch/x86_64/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/crypto.h>
   8 #include <linux/sched.h>
   9 #include <linux/stddef.h>
  10 #include <linux/errno.h>
  11 #include <linux/hardirq.h>
  12 #include <linux/suspend.h>
  13 #include <asm/pda.h>
  14 #include <asm/processor.h>
  15 #include <asm/segment.h>
  16 #include <asm/thread_info.h>
  17 #include <asm/ia32.h>
  18
  19 #define DEFINE(sym, val) \
  20         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  21
  22 #define BLANK() asm volatile("\n->" : : )
  23
  24 int main(void)
  25 {
  26 #define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry))
  27         ENTRY(state);
  28         ENTRY(flags);
  29         ENTRY(thread);
  30         ENTRY(pid);
  31         BLANK();
  32 #undef ENTRY
  33 #define ENTRY(entry) DEFINE(threadinfo_ ## entry, offsetof(struct thread_info, entry))
  34         ENTRY(flags);
  35         ENTRY(addr_limit);
  36         ENTRY(preempt_count);
  37         ENTRY(status);
  38         BLANK();
  39 #undef ENTRY
  40 #define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
  41         ENTRY(kernelstack);
  42         ENTRY(oldrsp);
  43         ENTRY(pcurrent);
  44         ENTRY(irqcount);
  45         ENTRY(cpunumber);
  46         ENTRY(irqstackptr);
  47         ENTRY(data_offset);
  48         BLANK();
  49 #undef ENTRY
  50 #ifdef CONFIG_IA32_EMULATION
  51 #define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct sigcontext_ia32, entry))
  52         ENTRY(eax);
  53         ENTRY(ebx);
  54         ENTRY(ecx);
  55         ENTRY(edx);
  56         ENTRY(esi);
  57         ENTRY(edi);
  58         ENTRY(ebp);
  59         ENTRY(esp);
  60         ENTRY(eip);
  61         BLANK();
  62 #undef ENTRY
  63         DEFINE(IA32_RT_SIGFRAME_sigcontext,
  64                offsetof (struct rt_sigframe32, uc.uc_mcontext));
  65         BLANK();
  66 #endif
  67         DEFINE(pbe_address, offsetof(struct pbe, address));
  68         DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
  69         DEFINE(pbe_next, offsetof(struct pbe, next));
  70         BLANK();
  71         DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
  72         BLANK();
  73         DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
  74         return 0;
  75 }