arch/x86/kernel/asm-offsets_64.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 #include <asm/bootparam.h>
  19
  20 #define DEFINE(sym, val) \
  21         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  22
  23 #define BLANK() asm volatile("\n->" : : )
  24
  25 #define OFFSET(sym, str, mem) \
  26         DEFINE(sym, offsetof(struct str, mem))
  27
  28 #define __NO_STUBS 1
  29 #undef __SYSCALL
  30 #undef _ASM_X86_64_UNISTD_H_
  31 #define __SYSCALL(nr, sym) [nr] = 1,
  32 static char syscalls[] = {
  33 #include <asm/unistd.h>
  34 };
  35
  36 int main(void)
  37 {
  38 #define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry))
  39         ENTRY(state);
  40         ENTRY(flags);
  41         ENTRY(thread);
  42         ENTRY(pid);
  43         BLANK();
  44 #undef ENTRY
  45 #define ENTRY(entry) DEFINE(threadinfo_ ## entry, offsetof(struct thread_info, entry))
  46         ENTRY(flags);
  47         ENTRY(addr_limit);
  48         ENTRY(preempt_count);
  49         ENTRY(status);
  50         BLANK();
  51 #undef ENTRY
  52 #define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
  53         ENTRY(kernelstack);
  54         ENTRY(oldrsp);
  55         ENTRY(pcurrent);
  56         ENTRY(irqcount);
  57         ENTRY(cpunumber);
  58         ENTRY(irqstackptr);
  59         ENTRY(data_offset);
  60         BLANK();
  61 #undef ENTRY
  62 #ifdef CONFIG_IA32_EMULATION
  63 #define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct sigcontext_ia32, entry))
  64         ENTRY(eax);
  65         ENTRY(ebx);
  66         ENTRY(ecx);
  67         ENTRY(edx);
  68         ENTRY(esi);
  69         ENTRY(edi);
  70         ENTRY(ebp);
  71         ENTRY(esp);
  72         ENTRY(eip);
  73         BLANK();
  74 #undef ENTRY
  75         DEFINE(IA32_RT_SIGFRAME_sigcontext,
  76                offsetof (struct rt_sigframe32, uc.uc_mcontext));
  77         BLANK();
  78 #endif
  79         DEFINE(pbe_address, offsetof(struct pbe, address));
  80         DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
  81         DEFINE(pbe_next, offsetof(struct pbe, next));
  82         BLANK();
  83 #define ENTRY(entry) DEFINE(pt_regs_ ## entry, offsetof(struct pt_regs, entry))
  84         ENTRY(rbx);
  85         ENTRY(rbx);
  86         ENTRY(rcx);
  87         ENTRY(rdx);
  88         ENTRY(rsp);
  89         ENTRY(rbp);
  90         ENTRY(rsi);
  91         ENTRY(rdi);
  92         ENTRY(r8);
  93         ENTRY(r9);
  94         ENTRY(r10);
  95         ENTRY(r11);
  96         ENTRY(r12);
  97         ENTRY(r13);
  98         ENTRY(r14);
  99         ENTRY(r15);
 100         ENTRY(eflags);
 101         BLANK();
 102 #undef ENTRY
 103 #define ENTRY(entry) DEFINE(saved_context_ ## entry, offsetof(struct saved_context, entry))
 104         ENTRY(cr0);
 105         ENTRY(cr2);
 106         ENTRY(cr3);
 107         ENTRY(cr4);
 108         ENTRY(cr8);
 109         BLANK();
 110 #undef ENTRY
 111         DEFINE(TSS_ist, offsetof(struct tss_struct, ist));
 112         BLANK();
 113         DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
 114         BLANK();
 115         DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
 116
 117         BLANK();
 118         OFFSET(BP_scratch, boot_params, scratch);
 119         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
 120         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
 121         OFFSET(BP_version, boot_params, hdr.version);
 122         return 0;
 123 }