LXR linux/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
  32static 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_XEN
  65        BLANK();
  66        OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
  67        OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
  68        OFFSET(XEN_vcpu_info_arch_cr2, vcpu_info, arch.cr2);
  69#endif
  70
  71        BLANK();
  72        OFFSET(BP_scratch, boot_params, scratch);
  73        OFFSET(BP_secure_boot, boot_params, secure_boot);
  74        OFFSET(BP_loadflags, boot_params, hdr.loadflags);
  75        OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
  76        OFFSET(BP_version, boot_params, hdr.version);
  77        OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
  78        OFFSET(BP_init_size, boot_params, hdr.init_size);
  79        OFFSET(BP_pref_address, boot_params, hdr.pref_address);
  80
  81        BLANK();
  82        DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
  83
  84        /* TLB state for the entry code */
  85        OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask);
  86
  87        /* Layout info for cpu_entry_area */
  88        OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);
  89        DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));
  90        DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1)));
  91
  92        /* Offset for fields in tss_struct */
  93        OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
  94        OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
  95        OFFSET(TSS_sp2, tss_struct, x86_tss.sp2);
  96}
  97