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 <crypto/aria.h>
  11 #include <linux/sched.h>
  12 #include <linux/stddef.h>
  13 #include <linux/hardirq.h>
  14 #include <linux/suspend.h>
  15 #include <linux/kbuild.h>
  16 #include <asm/processor.h>
  17 #include <asm/thread_info.h>
  18 #include <asm/sigframe.h>
  19 #include <asm/bootparam.h>
  20 #include <asm/suspend.h>
  21 #include <asm/tlbflush.h>
  22 #include <asm/tdx.h>
  23
  24 #ifdef CONFIG_XEN
  25 #include <xen/interface/xen.h>
  26 #endif
  27
  28 #ifdef CONFIG_X86_32
  29 # include "asm-offsets_32.c"
  30 #else
  31 # include "asm-offsets_64.c"
  32 #endif
  33
  34 static void __used common(void)
  35 {
  36         BLANK();
  37         OFFSET(TASK_threadsp, task_struct, thread.sp);
  38 #ifdef CONFIG_STACKPROTECTOR
  39         OFFSET(TASK_stack_canary, task_struct, stack_canary);
  40 #endif
  41
  42         BLANK();
  43         OFFSET(pbe_address, pbe, address);
  44         OFFSET(pbe_orig_address, pbe, orig_address);
  45         OFFSET(pbe_next, pbe, next);
  46
  47 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
  48         BLANK();
  49         OFFSET(IA32_SIGCONTEXT_ax, sigcontext_32, ax);
  50         OFFSET(IA32_SIGCONTEXT_bx, sigcontext_32, bx);
  51         OFFSET(IA32_SIGCONTEXT_cx, sigcontext_32, cx);
  52         OFFSET(IA32_SIGCONTEXT_dx, sigcontext_32, dx);
  53         OFFSET(IA32_SIGCONTEXT_si, sigcontext_32, si);
  54         OFFSET(IA32_SIGCONTEXT_di, sigcontext_32, di);
  55         OFFSET(IA32_SIGCONTEXT_bp, sigcontext_32, bp);
  56         OFFSET(IA32_SIGCONTEXT_sp, sigcontext_32, sp);
  57         OFFSET(IA32_SIGCONTEXT_ip, sigcontext_32, ip);
  58
  59         BLANK();
  60         OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);
  61 #endif
  62
  63 #ifdef CONFIG_XEN
  64         BLANK();
  65         OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
  66         OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
  67         OFFSET(XEN_vcpu_info_arch_cr2, vcpu_info, arch.cr2);
  68 #endif
  69
  70         BLANK();
  71         OFFSET(TDX_MODULE_rcx, tdx_module_args, rcx);
  72         OFFSET(TDX_MODULE_rdx, tdx_module_args, rdx);
  73         OFFSET(TDX_MODULE_r8,  tdx_module_args, r8);
  74         OFFSET(TDX_MODULE_r9,  tdx_module_args, r9);
  75         OFFSET(TDX_MODULE_r10, tdx_module_args, r10);
  76         OFFSET(TDX_MODULE_r11, tdx_module_args, r11);
  77         OFFSET(TDX_MODULE_r12, tdx_module_args, r12);
  78         OFFSET(TDX_MODULE_r13, tdx_module_args, r13);
  79         OFFSET(TDX_MODULE_r14, tdx_module_args, r14);
  80         OFFSET(TDX_MODULE_r15, tdx_module_args, r15);
  81         OFFSET(TDX_MODULE_rbx, tdx_module_args, rbx);
  82         OFFSET(TDX_MODULE_rdi, tdx_module_args, rdi);
  83         OFFSET(TDX_MODULE_rsi, tdx_module_args, rsi);
  84
  85         BLANK();
  86         OFFSET(BP_scratch, boot_params, scratch);
  87         OFFSET(BP_secure_boot, boot_params, secure_boot);
  88         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
  89         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
  90         OFFSET(BP_version, boot_params, hdr.version);
  91         OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
  92         OFFSET(BP_init_size, boot_params, hdr.init_size);
  93         OFFSET(BP_pref_address, boot_params, hdr.pref_address);
  94
  95         BLANK();
  96         DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
  97
  98         /* TLB state for the entry code */
  99         OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask);
 100
 101         /* Layout info for cpu_entry_area */
 102         OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);
 103         DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));
 104         DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1)));
 105
 106         /* Offset for fields in tss_struct */
 107         OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
 108         OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
 109         OFFSET(TSS_sp2, tss_struct, x86_tss.sp2);
 110         OFFSET(X86_top_of_stack, pcpu_hot, top_of_stack);
 111         OFFSET(X86_current_task, pcpu_hot, current_task);
 112 #ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING
 113         OFFSET(X86_call_depth, pcpu_hot, call_depth);
 114 #endif
 115 #if IS_ENABLED(CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64)
 116         /* Offset for fields in aria_ctx */
 117         BLANK();
 118         OFFSET(ARIA_CTX_enc_key, aria_ctx, enc_key);
 119         OFFSET(ARIA_CTX_dec_key, aria_ctx, dec_key);
 120         OFFSET(ARIA_CTX_rounds, aria_ctx, rounds);
 121 #endif
 122
 123 }