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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/x86/kernel/asm-offsets.c
26424 views
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// SPDX-License-Identifier: GPL-2.0

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/*

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 * Generate definitions needed by assembly language modules.

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 * This code generates raw asm output which is post-processed to extract

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 * and format the required data.

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 */

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#define COMPILE_OFFSETS

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#include <linux/crypto.h>

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#include <crypto/aria.h>

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#include <linux/sched.h>

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#include <linux/stddef.h>

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#include <linux/hardirq.h>

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#include <linux/suspend.h>

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#include <linux/kbuild.h>

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#include <asm/processor.h>

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#include <asm/thread_info.h>

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#include <asm/sigframe.h>

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#include <asm/bootparam.h>

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#include <asm/suspend.h>

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#include <asm/tlbflush.h>

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#include <asm/tdx.h>

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#ifdef CONFIG_XEN

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#include <xen/interface/xen.h>

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#endif

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#ifdef CONFIG_X86_32

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# include "asm-offsets_32.c"

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#else

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# include "asm-offsets_64.c"

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#endif

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static void __used common(void)

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{

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	OFFSET(CPUINFO_x86, cpuinfo_x86, x86);

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	OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor);

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	OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model);

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	OFFSET(CPUINFO_x86_stepping, cpuinfo_x86, x86_stepping);

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	OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level);

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	OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability);

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	OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id);

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	BLANK();

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	OFFSET(TASK_threadsp, task_struct, thread.sp);

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#ifdef CONFIG_STACKPROTECTOR

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	OFFSET(TASK_stack_canary, task_struct, stack_canary);

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#endif

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	BLANK();

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	OFFSET(pbe_address, pbe, address);

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	OFFSET(pbe_orig_address, pbe, orig_address);

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	OFFSET(pbe_next, pbe, next);

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#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)

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	BLANK();

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	OFFSET(IA32_SIGCONTEXT_ax, sigcontext_32, ax);

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	OFFSET(IA32_SIGCONTEXT_bx, sigcontext_32, bx);

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	OFFSET(IA32_SIGCONTEXT_cx, sigcontext_32, cx);

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	OFFSET(IA32_SIGCONTEXT_dx, sigcontext_32, dx);

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	OFFSET(IA32_SIGCONTEXT_si, sigcontext_32, si);

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	OFFSET(IA32_SIGCONTEXT_di, sigcontext_32, di);

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	OFFSET(IA32_SIGCONTEXT_bp, sigcontext_32, bp);

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	OFFSET(IA32_SIGCONTEXT_sp, sigcontext_32, sp);

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	OFFSET(IA32_SIGCONTEXT_ip, sigcontext_32, ip);

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	BLANK();

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	OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe_ia32, uc.uc_mcontext);

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#endif

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#ifdef CONFIG_XEN

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	BLANK();

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	OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);

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	OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);

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	OFFSET(XEN_vcpu_info_arch_cr2, vcpu_info, arch.cr2);

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#endif

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	BLANK();

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	OFFSET(TDX_MODULE_rcx, tdx_module_args, rcx);

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	OFFSET(TDX_MODULE_rdx, tdx_module_args, rdx);

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	OFFSET(TDX_MODULE_r8,  tdx_module_args, r8);

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	OFFSET(TDX_MODULE_r9,  tdx_module_args, r9);

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	OFFSET(TDX_MODULE_r10, tdx_module_args, r10);

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	OFFSET(TDX_MODULE_r11, tdx_module_args, r11);

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	OFFSET(TDX_MODULE_r12, tdx_module_args, r12);

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	OFFSET(TDX_MODULE_r13, tdx_module_args, r13);

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	OFFSET(TDX_MODULE_r14, tdx_module_args, r14);

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	OFFSET(TDX_MODULE_r15, tdx_module_args, r15);

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	OFFSET(TDX_MODULE_rbx, tdx_module_args, rbx);

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	OFFSET(TDX_MODULE_rdi, tdx_module_args, rdi);

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	OFFSET(TDX_MODULE_rsi, tdx_module_args, rsi);

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	BLANK();

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	OFFSET(BP_scratch, boot_params, scratch);

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	OFFSET(BP_secure_boot, boot_params, secure_boot);

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	OFFSET(BP_loadflags, boot_params, hdr.loadflags);

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	OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);

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	OFFSET(BP_version, boot_params, hdr.version);

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	OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);

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	OFFSET(BP_init_size, boot_params, hdr.init_size);

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	OFFSET(BP_pref_address, boot_params, hdr.pref_address);

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	BLANK();

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	DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));

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	/* TLB state for the entry code */

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	OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask);

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	/* Layout info for cpu_entry_area */

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	OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);

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	DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));

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	DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1)));

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	/* Offset for fields in tss_struct */

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	OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);

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	OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);

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	OFFSET(TSS_sp2, tss_struct, x86_tss.sp2);

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#if IS_ENABLED(CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64)

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	/* Offset for fields in aria_ctx */

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	BLANK();

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	OFFSET(ARIA_CTX_enc_key, aria_ctx, enc_key);

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	OFFSET(ARIA_CTX_dec_key, aria_ctx, dec_key);

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	OFFSET(ARIA_CTX_rounds, aria_ctx, rounds);

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#endif

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}

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