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 #define __NO_STUBS 1
  25 #undef __SYSCALL
  26 #undef _ASM_X86_64_UNISTD_H_
  27 #define __SYSCALL(nr, sym) [nr] = 1,
  28 static char syscalls[] = {
  29 #include <asm/unistd.h>
  30 };
  31
  32 int main(void)
  33 {
  34 #define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry))
  35         ENTRY(state);
  36         ENTRY(flags);
  37         ENTRY(thread);
  38         ENTRY(pid);
  39         BLANK();
  40 #undef ENTRY
  41 #define ENTRY(entry) DEFINE(threadinfo_ ## entry, offsetof(struct thread_info, entry))
  42         ENTRY(flags);
  43         ENTRY(addr_limit);
  44         ENTRY(preempt_count);
  45         ENTRY(status);
  46         BLANK();
  47 #undef ENTRY
  48 #define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
  49         ENTRY(kernelstack);
  50         ENTRY(oldrsp);
  51         ENTRY(pcurrent);
  52         ENTRY(irqcount);
  53         ENTRY(cpunumber);
  54         ENTRY(irqstackptr);
  55         ENTRY(data_offset);
  56         BLANK();
  57 #undef ENTRY
  58 #ifdef CONFIG_IA32_EMULATION
  59 #define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct sigcontext_ia32, entry))
  60         ENTRY(eax);
  61         ENTRY(ebx);
  62         ENTRY(ecx);
  63         ENTRY(edx);
  64         ENTRY(esi);
  65         ENTRY(edi);
  66         ENTRY(ebp);
  67         ENTRY(esp);
  68         ENTRY(eip);
  69         BLANK();
  70 #undef ENTRY
  71         DEFINE(IA32_RT_SIGFRAME_sigcontext,
  72                offsetof (struct rt_sigframe32, uc.uc_mcontext));
  73         BLANK();
  74 #endif
  75         DEFINE(pbe_address, offsetof(struct pbe, address));
  76         DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
  77         DEFINE(pbe_next, offsetof(struct pbe, next));
  78         BLANK();
  79         DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
  80         BLANK();
  81         DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
  82         BLANK();
  83         DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
  84         return 0;
  85 }