xref: /linux/arch/x86/kernel/asm-offsets.c (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80)
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 
common(void)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 }
124