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(pid);
  42         BLANK();
  43 #undef ENTRY
  44 #define ENTRY(entry) DEFINE(threadinfo_ ## entry, offsetof(struct thread_info, entry))
  45         ENTRY(flags);
  46         ENTRY(addr_limit);
  47         ENTRY(preempt_count);
  48         ENTRY(status);
  49 #ifdef CONFIG_IA32_EMULATION
  50         ENTRY(sysenter_return);
  51 #endif
  52         BLANK();
  53 #undef ENTRY
  54 #define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
  55         ENTRY(kernelstack);
  56         ENTRY(oldrsp);
  57         ENTRY(pcurrent);
  58         ENTRY(irqcount);
  59         ENTRY(cpunumber);
  60         ENTRY(irqstackptr);
  61         ENTRY(data_offset);
  62         BLANK();
  63 #undef ENTRY
  64 #ifdef CONFIG_PARAVIRT
  65         BLANK();
  66         OFFSET(PARAVIRT_enabled, pv_info, paravirt_enabled);
  67         OFFSET(PARAVIRT_PATCH_pv_cpu_ops, paravirt_patch_template, pv_cpu_ops);
  68         OFFSET(PARAVIRT_PATCH_pv_irq_ops, paravirt_patch_template, pv_irq_ops);
  69         OFFSET(PV_IRQ_irq_disable, pv_irq_ops, irq_disable);
  70         OFFSET(PV_IRQ_irq_enable, pv_irq_ops, irq_enable);
  71         OFFSET(PV_CPU_iret, pv_cpu_ops, iret);
  72         OFFSET(PV_CPU_irq_enable_syscall_ret, pv_cpu_ops, irq_enable_syscall_ret);
  73         OFFSET(PV_CPU_swapgs, pv_cpu_ops, swapgs);
  74         OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2);
  75 #endif
  76
  77
  78 #ifdef CONFIG_IA32_EMULATION
  79 #define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct sigcontext_ia32, entry))
  80         ENTRY(ax);
  81         ENTRY(bx);
  82         ENTRY(cx);
  83         ENTRY(dx);
  84         ENTRY(si);
  85         ENTRY(di);
  86         ENTRY(bp);
  87         ENTRY(sp);
  88         ENTRY(ip);
  89         BLANK();
  90 #undef ENTRY
  91         DEFINE(IA32_RT_SIGFRAME_sigcontext,
  92                offsetof (struct rt_sigframe32, uc.uc_mcontext));
  93         BLANK();
  94 #endif
  95         DEFINE(pbe_address, offsetof(struct pbe, address));
  96         DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
  97         DEFINE(pbe_next, offsetof(struct pbe, next));
  98         BLANK();
  99 #define ENTRY(entry) DEFINE(pt_regs_ ## entry, offsetof(struct pt_regs, entry))
 100         ENTRY(bx);
 101         ENTRY(bx);
 102         ENTRY(cx);
 103         ENTRY(dx);
 104         ENTRY(sp);
 105         ENTRY(bp);
 106         ENTRY(si);
 107         ENTRY(di);
 108         ENTRY(r8);
 109         ENTRY(r9);
 110         ENTRY(r10);
 111         ENTRY(r11);
 112         ENTRY(r12);
 113         ENTRY(r13);
 114         ENTRY(r14);
 115         ENTRY(r15);
 116         ENTRY(flags);
 117         BLANK();
 118 #undef ENTRY
 119 #define ENTRY(entry) DEFINE(saved_context_ ## entry, offsetof(struct saved_context, entry))
 120         ENTRY(cr0);
 121         ENTRY(cr2);
 122         ENTRY(cr3);
 123         ENTRY(cr4);
 124         ENTRY(cr8);
 125         BLANK();
 126 #undef ENTRY
 127         DEFINE(TSS_ist, offsetof(struct tss_struct, x86_tss.ist));
 128         BLANK();
 129         DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
 130         BLANK();
 131         DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
 132
 133         BLANK();
 134         OFFSET(BP_scratch, boot_params, scratch);
 135         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
 136         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
 137         OFFSET(BP_version, boot_params, hdr.version);
 138         return 0;
 139 }