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 static void __used common(void)
  33 {
  34         BLANK();
  35         OFFSET(TASK_threadsp, task_struct, thread.sp);
  36 #ifdef CONFIG_STACKPROTECTOR
  37         OFFSET(TASK_stack_canary, task_struct, stack_canary);
  38 #endif
  39
  40         BLANK();
  41         OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
  42
  43         BLANK();
  44         OFFSET(pbe_address, pbe, address);
  45         OFFSET(pbe_orig_address, pbe, orig_address);
  46         OFFSET(pbe_next, pbe, next);
  47
  48 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
  49         BLANK();
  50         OFFSET(IA32_SIGCONTEXT_ax, sigcontext_32, ax);
  51         OFFSET(IA32_SIGCONTEXT_bx, sigcontext_32, bx);
  52         OFFSET(IA32_SIGCONTEXT_cx, sigcontext_32, cx);
  53         OFFSET(IA32_SIGCONTEXT_dx, sigcontext_32, dx);
  54         OFFSET(IA32_SIGCONTEXT_si, sigcontext_32, si);
  55         OFFSET(IA32_SIGCONTEXT_di, sigcontext_32, di);
  56         OFFSET(IA32_SIGCONTEXT_bp, sigcontext_32, bp);
  57         OFFSET(IA32_SIGCONTEXT_sp, sigcontext_32, sp);
  58         OFFSET(IA32_SIGCONTEXT_ip, sigcontext_32, ip);
  59
  60         BLANK();
  61         OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);
  62 #endif
  63
  64 #ifdef CONFIG_PARAVIRT_XXL
  65         BLANK();
  66         OFFSET(PV_IRQ_irq_disable, paravirt_patch_template, irq.irq_disable);
  67         OFFSET(PV_IRQ_irq_enable, paravirt_patch_template, irq.irq_enable);
  68         OFFSET(PV_CPU_iret, paravirt_patch_template, cpu.iret);
  69 #endif
  70
  71 #ifdef CONFIG_XEN
  72         BLANK();
  73         OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
  74         OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
  75         OFFSET(XEN_vcpu_info_arch_cr2, vcpu_info, arch.cr2);
  76 #endif
  77
  78         BLANK();
  79         OFFSET(BP_scratch, boot_params, scratch);
  80         OFFSET(BP_secure_boot, boot_params, secure_boot);
  81         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
  82         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
  83         OFFSET(BP_version, boot_params, hdr.version);
  84         OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
  85         OFFSET(BP_init_size, boot_params, hdr.init_size);
  86         OFFSET(BP_pref_address, boot_params, hdr.pref_address);
  87
  88         BLANK();
  89         DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
  90
  91         /* TLB state for the entry code */
  92         OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask);
  93
  94         /* Layout info for cpu_entry_area */
  95         OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);
  96         DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));
  97         DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1)));
  98
  99         /* Offset for fields in tss_struct */
 100         OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
 101         OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
 102         OFFSET(TSS_sp2, tss_struct, x86_tss.sp2);
 103 }