arch/x86/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 #define COMPILE_OFFSETS
   7
   8 #include <linux/crypto.h>
   9 #include <linux/sched.h>
  10 #include <linux/stddef.h>
  11 #include <linux/hardirq.h>
  12 #include <linux/suspend.h>
  13 #include <linux/kbuild.h>
  14 #include <asm/processor.h>
  15 #include <asm/thread_info.h>
  16 #include <asm/sigframe.h>
  17 #include <asm/bootparam.h>
  18 #include <asm/suspend.h>
  19
  20 #ifdef CONFIG_XEN
  21 #include <xen/interface/xen.h>
  22 #endif
  23
  24 #ifdef CONFIG_X86_32
  25 # include "asm-offsets_32.c"
  26 #else
  27 # include "asm-offsets_64.c"
  28 #endif
  29
  30 void common(void) {
  31         BLANK();
  32         OFFSET(TASK_threadsp, task_struct, thread.sp);
  33 #ifdef CONFIG_CC_STACKPROTECTOR
  34         OFFSET(TASK_stack_canary, task_struct, stack_canary);
  35 #endif
  36
  37         BLANK();
  38         OFFSET(TASK_TI_flags, task_struct, thread_info.flags);
  39         OFFSET(TASK_addr_limit, task_struct, thread.addr_limit);
  40
  41         BLANK();
  42         OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
  43
  44         BLANK();
  45         OFFSET(pbe_address, pbe, address);
  46         OFFSET(pbe_orig_address, pbe, orig_address);
  47         OFFSET(pbe_next, pbe, next);
  48
  49 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
  50         BLANK();
  51         OFFSET(IA32_SIGCONTEXT_ax, sigcontext_32, ax);
  52         OFFSET(IA32_SIGCONTEXT_bx, sigcontext_32, bx);
  53         OFFSET(IA32_SIGCONTEXT_cx, sigcontext_32, cx);
  54         OFFSET(IA32_SIGCONTEXT_dx, sigcontext_32, dx);
  55         OFFSET(IA32_SIGCONTEXT_si, sigcontext_32, si);
  56         OFFSET(IA32_SIGCONTEXT_di, sigcontext_32, di);
  57         OFFSET(IA32_SIGCONTEXT_bp, sigcontext_32, bp);
  58         OFFSET(IA32_SIGCONTEXT_sp, sigcontext_32, sp);
  59         OFFSET(IA32_SIGCONTEXT_ip, sigcontext_32, ip);
  60
  61         BLANK();
  62         OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);
  63 #endif
  64
  65 #ifdef CONFIG_PARAVIRT
  66         BLANK();
  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_read_cr0, pv_cpu_ops, read_cr0);
  73         OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2);
  74 #endif
  75
  76 #ifdef CONFIG_XEN
  77         BLANK();
  78         OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
  79         OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
  80 #endif
  81
  82         BLANK();
  83         OFFSET(BP_scratch, boot_params, scratch);
  84         OFFSET(BP_secure_boot, boot_params, secure_boot);
  85         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
  86         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
  87         OFFSET(BP_version, boot_params, hdr.version);
  88         OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
  89         OFFSET(BP_init_size, boot_params, hdr.init_size);
  90         OFFSET(BP_pref_address, boot_params, hdr.pref_address);
  91         OFFSET(BP_code32_start, boot_params, hdr.code32_start);
  92
  93         BLANK();
  94         DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
  95
  96         /* Offset from cpu_tss to SYSENTER_stack */
  97         OFFSET(CPU_TSS_SYSENTER_stack, tss_struct, SYSENTER_stack);
  98         /* Size of SYSENTER_stack */
  99         DEFINE(SIZEOF_SYSENTER_stack, sizeof(((struct tss_struct *)0)->SYSENTER_stack));
 100
 101         /* Layout info for cpu_entry_area */
 102         OFFSET(CPU_ENTRY_AREA_tss, cpu_entry_area, tss);
 103 }