x86/kernel/asm-offsets.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Generate definitions needed by assembly language modules.
0004  * This code generates raw asm output which is post-processed to extract
0005  * and format the required data.
0006  */
0007 #define COMPILE_OFFSETS
0008
0009 #include <linux/crypto.h>
0010 #include <linux/sched.h>
0011 #include <linux/stddef.h>
0012 #include <linux/hardirq.h>
0013 #include <linux/suspend.h>
0014 #include <linux/kbuild.h>
0015 #include <asm/processor.h>
0016 #include <asm/thread_info.h>
0017 #include <asm/sigframe.h>
0018 #include <asm/bootparam.h>
0019 #include <asm/suspend.h>
0020 #include <asm/tlbflush.h>
0021 #include <asm/tdx.h>
0022 #include "../kvm/vmx/vmx.h"
0023
0024 #ifdef CONFIG_XEN
0025 #include <xen/interface/xen.h>
0026 #endif
0027
0028 #ifdef CONFIG_X86_32
0029 # include "asm-offsets_32.c"
0030 #else
0031 # include "asm-offsets_64.c"
0032 #endif
0033
0034 static void __used common(void)
0035 {
0036     BLANK();
0037     OFFSET(TASK_threadsp, task_struct, thread.sp);
0038 #ifdef CONFIG_STACKPROTECTOR
0039     OFFSET(TASK_stack_canary, task_struct, stack_canary);
0040 #endif
0041
0042     BLANK();
0043     OFFSET(pbe_address, pbe, address);
0044     OFFSET(pbe_orig_address, pbe, orig_address);
0045     OFFSET(pbe_next, pbe, next);
0046
0047 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
0048     BLANK();
0049     OFFSET(IA32_SIGCONTEXT_ax, sigcontext_32, ax);
0050     OFFSET(IA32_SIGCONTEXT_bx, sigcontext_32, bx);
0051     OFFSET(IA32_SIGCONTEXT_cx, sigcontext_32, cx);
0052     OFFSET(IA32_SIGCONTEXT_dx, sigcontext_32, dx);
0053     OFFSET(IA32_SIGCONTEXT_si, sigcontext_32, si);
0054     OFFSET(IA32_SIGCONTEXT_di, sigcontext_32, di);
0055     OFFSET(IA32_SIGCONTEXT_bp, sigcontext_32, bp);
0056     OFFSET(IA32_SIGCONTEXT_sp, sigcontext_32, sp);
0057     OFFSET(IA32_SIGCONTEXT_ip, sigcontext_32, ip);
0058
0059     BLANK();
0060     OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);
0061 #endif
0062
0063 #ifdef CONFIG_XEN
0064     BLANK();
0065     OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
0066     OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
0067     OFFSET(XEN_vcpu_info_arch_cr2, vcpu_info, arch.cr2);
0068 #endif
0069
0070     BLANK();
0071     OFFSET(TDX_MODULE_rcx, tdx_module_output, rcx);
0072     OFFSET(TDX_MODULE_rdx, tdx_module_output, rdx);
0073     OFFSET(TDX_MODULE_r8,  tdx_module_output, r8);
0074     OFFSET(TDX_MODULE_r9,  tdx_module_output, r9);
0075     OFFSET(TDX_MODULE_r10, tdx_module_output, r10);
0076     OFFSET(TDX_MODULE_r11, tdx_module_output, r11);
0077
0078     BLANK();
0079     OFFSET(TDX_HYPERCALL_r10, tdx_hypercall_args, r10);
0080     OFFSET(TDX_HYPERCALL_r11, tdx_hypercall_args, r11);
0081     OFFSET(TDX_HYPERCALL_r12, tdx_hypercall_args, r12);
0082     OFFSET(TDX_HYPERCALL_r13, tdx_hypercall_args, r13);
0083     OFFSET(TDX_HYPERCALL_r14, tdx_hypercall_args, r14);
0084     OFFSET(TDX_HYPERCALL_r15, tdx_hypercall_args, r15);
0085
0086     BLANK();
0087     OFFSET(BP_scratch, boot_params, scratch);
0088     OFFSET(BP_secure_boot, boot_params, secure_boot);
0089     OFFSET(BP_loadflags, boot_params, hdr.loadflags);
0090     OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
0091     OFFSET(BP_version, boot_params, hdr.version);
0092     OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
0093     OFFSET(BP_init_size, boot_params, hdr.init_size);
0094     OFFSET(BP_pref_address, boot_params, hdr.pref_address);
0095
0096     BLANK();
0097     DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
0098
0099     /* TLB state for the entry code */
0100     OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask);
0101
0102     /* Layout info for cpu_entry_area */
0103     OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);
0104     DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));
0105     DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1)));
0106
0107     /* Offset for fields in tss_struct */
0108     OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
0109     OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
0110     OFFSET(TSS_sp2, tss_struct, x86_tss.sp2);
0111
0112     if (IS_ENABLED(CONFIG_KVM_INTEL)) {
0113         BLANK();
0114         OFFSET(VMX_spec_ctrl, vcpu_vmx, spec_ctrl);
0115     }
0116 }