arch/x86/kernel/asm-offsets.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Generate definitions needed by assembly language modules.
   4  * This code generates raw asm output which is post-processed to extract
   5  * and format the required data.
   6  */
   7 #define COMPILE_OFFSETS
   8
   9 #include <linux/crypto.h>
  10 #include <linux/sched.h>
  11 #include <linux/stddef.h>
  12 #include <linux/hardirq.h>
  13 #include <linux/suspend.h>
  14 #include <linux/kbuild.h>
  15 #include <asm/processor.h>
  16 #include <asm/thread_info.h>
  17 #include <asm/sigframe.h>
  18 #include <asm/bootparam.h>
  19 #include <asm/suspend.h>
  20 #include <asm/tlbflush.h>
  21
  22 #ifdef CONFIG_XEN
  23 #include <xen/interface/xen.h>
  24 #endif
  25
  26 #ifdef CONFIG_X86_32
  27 # include "asm-offsets_32.c"
  28 #else
  29 # include "asm-offsets_64.c"
  30 #endif
  31
  32 void common(void) {
  33         BLANK();
  34         OFFSET(TASK_threadsp, task_struct, thread.sp);
  35 #ifdef CONFIG_STACKPROTECTOR
  36         OFFSET(TASK_stack_canary, task_struct, stack_canary);
  37 #endif
  38
  39         BLANK();
  40         OFFSET(TASK_TI_flags, task_struct, thread_info.flags);
  41         OFFSET(TASK_addr_limit, task_struct, thread.addr_limit);
  42
  43         BLANK();
  44         OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
  45
  46         BLANK();
  47         OFFSET(pbe_address, pbe, address);
  48         OFFSET(pbe_orig_address, pbe, orig_address);
  49         OFFSET(pbe_next, pbe, next);
  50
  51 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
  52         BLANK();
  53         OFFSET(IA32_SIGCONTEXT_ax, sigcontext_32, ax);
  54         OFFSET(IA32_SIGCONTEXT_bx, sigcontext_32, bx);
  55         OFFSET(IA32_SIGCONTEXT_cx, sigcontext_32, cx);
  56         OFFSET(IA32_SIGCONTEXT_dx, sigcontext_32, dx);
  57         OFFSET(IA32_SIGCONTEXT_si, sigcontext_32, si);
  58         OFFSET(IA32_SIGCONTEXT_di, sigcontext_32, di);
  59         OFFSET(IA32_SIGCONTEXT_bp, sigcontext_32, bp);
  60         OFFSET(IA32_SIGCONTEXT_sp, sigcontext_32, sp);
  61         OFFSET(IA32_SIGCONTEXT_ip, sigcontext_32, ip);
  62
  63         BLANK();
  64         OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);
  65 #endif
  66
  67 #ifdef CONFIG_PARAVIRT_XXL
  68         BLANK();
  69         OFFSET(PV_IRQ_irq_disable, paravirt_patch_template, irq.irq_disable);
  70         OFFSET(PV_IRQ_irq_enable, paravirt_patch_template, irq.irq_enable);
  71         OFFSET(PV_CPU_iret, paravirt_patch_template, cpu.iret);
  72         OFFSET(PV_MMU_read_cr2, paravirt_patch_template, mmu.read_cr2);
  73 #endif
  74
  75 #ifdef CONFIG_XEN
  76         BLANK();
  77         OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
  78         OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
  79 #endif
  80
  81         BLANK();
  82         OFFSET(BP_scratch, boot_params, scratch);
  83         OFFSET(BP_secure_boot, boot_params, secure_boot);
  84         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
  85         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
  86         OFFSET(BP_version, boot_params, hdr.version);
  87         OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
  88         OFFSET(BP_init_size, boot_params, hdr.init_size);
  89         OFFSET(BP_pref_address, boot_params, hdr.pref_address);
  90         OFFSET(BP_code32_start, boot_params, hdr.code32_start);
  91
  92         BLANK();
  93         DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
  94
  95         /* TLB state for the entry code */
  96         OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask);
  97
  98         /* Layout info for cpu_entry_area */
  99         OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);
 100         DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));
 101         DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1)));
 102
 103         /* Offset for fields in tss_struct */
 104         OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
 105         OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
 106         OFFSET(TSS_sp2, tss_struct, x86_tss.sp2);
 107 }