1// SPDX-License-Identifier: GPL-2.0
2/*
3 * asm-offsets.c: Calculate pt_regs and task_struct offsets.
4 *
5 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
6 */
7#include <linux/types.h>
8#include <linux/sched.h>
9#include <linux/mm.h>
10#include <linux/kbuild.h>
11#include <linux/suspend.h>
12#include <linux/kvm_host.h>
13#include <asm/cpu-info.h>
14#include <asm/ptrace.h>
15#include <asm/processor.h>
16#include <asm/ftrace.h>
17
18static void __used output_ptreg_defines(void)
19{
20 COMMENT("LoongArch pt_regs offsets.");
21 OFFSET(PT_R0, pt_regs, regs[0]);
22 OFFSET(PT_R1, pt_regs, regs[1]);
23 OFFSET(PT_R2, pt_regs, regs[2]);
24 OFFSET(PT_R3, pt_regs, regs[3]);
25 OFFSET(PT_R4, pt_regs, regs[4]);
26 OFFSET(PT_R5, pt_regs, regs[5]);
27 OFFSET(PT_R6, pt_regs, regs[6]);
28 OFFSET(PT_R7, pt_regs, regs[7]);
29 OFFSET(PT_R8, pt_regs, regs[8]);
30 OFFSET(PT_R9, pt_regs, regs[9]);
31 OFFSET(PT_R10, pt_regs, regs[10]);
32 OFFSET(PT_R11, pt_regs, regs[11]);
33 OFFSET(PT_R12, pt_regs, regs[12]);
34 OFFSET(PT_R13, pt_regs, regs[13]);
35 OFFSET(PT_R14, pt_regs, regs[14]);
36 OFFSET(PT_R15, pt_regs, regs[15]);
37 OFFSET(PT_R16, pt_regs, regs[16]);
38 OFFSET(PT_R17, pt_regs, regs[17]);
39 OFFSET(PT_R18, pt_regs, regs[18]);
40 OFFSET(PT_R19, pt_regs, regs[19]);
41 OFFSET(PT_R20, pt_regs, regs[20]);
42 OFFSET(PT_R21, pt_regs, regs[21]);
43 OFFSET(PT_R22, pt_regs, regs[22]);
44 OFFSET(PT_R23, pt_regs, regs[23]);
45 OFFSET(PT_R24, pt_regs, regs[24]);
46 OFFSET(PT_R25, pt_regs, regs[25]);
47 OFFSET(PT_R26, pt_regs, regs[26]);
48 OFFSET(PT_R27, pt_regs, regs[27]);
49 OFFSET(PT_R28, pt_regs, regs[28]);
50 OFFSET(PT_R29, pt_regs, regs[29]);
51 OFFSET(PT_R30, pt_regs, regs[30]);
52 OFFSET(PT_R31, pt_regs, regs[31]);
53 OFFSET(PT_CRMD, pt_regs, csr_crmd);
54 OFFSET(PT_PRMD, pt_regs, csr_prmd);
55 OFFSET(PT_EUEN, pt_regs, csr_euen);
56 OFFSET(PT_ECFG, pt_regs, csr_ecfg);
57 OFFSET(PT_ESTAT, pt_regs, csr_estat);
58 OFFSET(PT_ERA, pt_regs, csr_era);
59 OFFSET(PT_BVADDR, pt_regs, csr_badvaddr);
60 OFFSET(PT_ORIG_A0, pt_regs, orig_a0);
61 DEFINE(PT_SIZE, sizeof(struct pt_regs));
62 BLANK();
63}
64
65static void __used output_task_defines(void)
66{
67 COMMENT("LoongArch task_struct offsets.");
68 OFFSET(TASK_STATE, task_struct, __state);
69 OFFSET(TASK_THREAD_INFO, task_struct, stack);
70 OFFSET(TASK_FLAGS, task_struct, flags);
71 OFFSET(TASK_MM, task_struct, mm);
72 OFFSET(TASK_PID, task_struct, pid);
73#if defined(CONFIG_STACKPROTECTOR)
74 OFFSET(TASK_STACK_CANARY, task_struct, stack_canary);
75#endif
76 DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
77 BLANK();
78}
79
80static void __used output_thread_info_defines(void)
81{
82 COMMENT("LoongArch thread_info offsets.");
83 OFFSET(TI_TASK, thread_info, task);
84 OFFSET(TI_FLAGS, thread_info, flags);
85 OFFSET(TI_TP_VALUE, thread_info, tp_value);
86 OFFSET(TI_CPU, thread_info, cpu);
87 OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
88 OFFSET(TI_REGS, thread_info, regs);
89 DEFINE(_THREAD_SIZE, THREAD_SIZE);
90 DEFINE(_THREAD_MASK, THREAD_MASK);
91 DEFINE(_IRQ_STACK_SIZE, IRQ_STACK_SIZE);
92 DEFINE(_IRQ_STACK_START, IRQ_STACK_START);
93 BLANK();
94}
95
96static void __used output_thread_defines(void)
97{
98 COMMENT("LoongArch specific thread_struct offsets.");
99 OFFSET(THREAD_REG01, task_struct, thread.reg01);
100 OFFSET(THREAD_REG03, task_struct, thread.reg03);
101 OFFSET(THREAD_REG22, task_struct, thread.reg22);
102 OFFSET(THREAD_REG23, task_struct, thread.reg23);
103 OFFSET(THREAD_REG24, task_struct, thread.reg24);
104 OFFSET(THREAD_REG25, task_struct, thread.reg25);
105 OFFSET(THREAD_REG26, task_struct, thread.reg26);
106 OFFSET(THREAD_REG27, task_struct, thread.reg27);
107 OFFSET(THREAD_REG28, task_struct, thread.reg28);
108 OFFSET(THREAD_REG29, task_struct, thread.reg29);
109 OFFSET(THREAD_REG30, task_struct, thread.reg30);
110 OFFSET(THREAD_REG31, task_struct, thread.reg31);
111 OFFSET(THREAD_SCHED_RA, task_struct, thread.sched_ra);
112 OFFSET(THREAD_SCHED_CFA, task_struct, thread.sched_cfa);
113 OFFSET(THREAD_CSRCRMD, task_struct,
114 thread.csr_crmd);
115 OFFSET(THREAD_CSRPRMD, task_struct,
116 thread.csr_prmd);
117 OFFSET(THREAD_CSREUEN, task_struct,
118 thread.csr_euen);
119 OFFSET(THREAD_CSRECFG, task_struct,
120 thread.csr_ecfg);
121
122 OFFSET(THREAD_FPU, task_struct, thread.fpu);
123
124 OFFSET(THREAD_BVADDR, task_struct, \
125 thread.csr_badvaddr);
126 OFFSET(THREAD_ECODE, task_struct, \
127 thread.error_code);
128 OFFSET(THREAD_TRAPNO, task_struct, thread.trap_nr);
129 BLANK();
130}
131
132static void __used output_thread_fpu_defines(void)
133{
134 OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]);
135 OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]);
136 OFFSET(THREAD_FPR2, loongarch_fpu, fpr[2]);
137 OFFSET(THREAD_FPR3, loongarch_fpu, fpr[3]);
138 OFFSET(THREAD_FPR4, loongarch_fpu, fpr[4]);
139 OFFSET(THREAD_FPR5, loongarch_fpu, fpr[5]);
140 OFFSET(THREAD_FPR6, loongarch_fpu, fpr[6]);
141 OFFSET(THREAD_FPR7, loongarch_fpu, fpr[7]);
142 OFFSET(THREAD_FPR8, loongarch_fpu, fpr[8]);
143 OFFSET(THREAD_FPR9, loongarch_fpu, fpr[9]);
144 OFFSET(THREAD_FPR10, loongarch_fpu, fpr[10]);
145 OFFSET(THREAD_FPR11, loongarch_fpu, fpr[11]);
146 OFFSET(THREAD_FPR12, loongarch_fpu, fpr[12]);
147 OFFSET(THREAD_FPR13, loongarch_fpu, fpr[13]);
148 OFFSET(THREAD_FPR14, loongarch_fpu, fpr[14]);
149 OFFSET(THREAD_FPR15, loongarch_fpu, fpr[15]);
150 OFFSET(THREAD_FPR16, loongarch_fpu, fpr[16]);
151 OFFSET(THREAD_FPR17, loongarch_fpu, fpr[17]);
152 OFFSET(THREAD_FPR18, loongarch_fpu, fpr[18]);
153 OFFSET(THREAD_FPR19, loongarch_fpu, fpr[19]);
154 OFFSET(THREAD_FPR20, loongarch_fpu, fpr[20]);
155 OFFSET(THREAD_FPR21, loongarch_fpu, fpr[21]);
156 OFFSET(THREAD_FPR22, loongarch_fpu, fpr[22]);
157 OFFSET(THREAD_FPR23, loongarch_fpu, fpr[23]);
158 OFFSET(THREAD_FPR24, loongarch_fpu, fpr[24]);
159 OFFSET(THREAD_FPR25, loongarch_fpu, fpr[25]);
160 OFFSET(THREAD_FPR26, loongarch_fpu, fpr[26]);
161 OFFSET(THREAD_FPR27, loongarch_fpu, fpr[27]);
162 OFFSET(THREAD_FPR28, loongarch_fpu, fpr[28]);
163 OFFSET(THREAD_FPR29, loongarch_fpu, fpr[29]);
164 OFFSET(THREAD_FPR30, loongarch_fpu, fpr[30]);
165 OFFSET(THREAD_FPR31, loongarch_fpu, fpr[31]);
166
167 OFFSET(THREAD_FCSR, loongarch_fpu, fcsr);
168 OFFSET(THREAD_FCC, loongarch_fpu, fcc);
169 OFFSET(THREAD_FTOP, loongarch_fpu, ftop);
170 BLANK();
171}
172
173static void __used output_thread_lbt_defines(void)
174{
175 OFFSET(THREAD_SCR0, loongarch_lbt, scr0);
176 OFFSET(THREAD_SCR1, loongarch_lbt, scr1);
177 OFFSET(THREAD_SCR2, loongarch_lbt, scr2);
178 OFFSET(THREAD_SCR3, loongarch_lbt, scr3);
179 OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags);
180 BLANK();
181}
182
183static void __used output_mm_defines(void)
184{
185 COMMENT("Size of struct page");
186 DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
187 BLANK();
188 COMMENT("Linux mm_struct offsets.");
189 OFFSET(MM_USERS, mm_struct, mm_users);
190 OFFSET(MM_PGD, mm_struct, pgd);
191 OFFSET(MM_CONTEXT, mm_struct, context);
192 BLANK();
193 DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
194 DEFINE(_PMD_T_SIZE, sizeof(pmd_t));
195 DEFINE(_PTE_T_SIZE, sizeof(pte_t));
196 BLANK();
197 DEFINE(_PGD_T_LOG2, PGD_T_LOG2);
198#ifndef __PAGETABLE_PMD_FOLDED
199 DEFINE(_PMD_T_LOG2, PMD_T_LOG2);
200#endif
201 DEFINE(_PTE_T_LOG2, PTE_T_LOG2);
202 BLANK();
203 DEFINE(_PMD_SHIFT, PMD_SHIFT);
204 DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
205 BLANK();
206 DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
207 DEFINE(_PTRS_PER_PMD, PTRS_PER_PMD);
208 DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
209 BLANK();
210 DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
211 DEFINE(_PAGE_SIZE, PAGE_SIZE);
212 BLANK();
213}
214
215static void __used output_sc_defines(void)
216{
217 COMMENT("Linux sigcontext offsets.");
218 OFFSET(SC_REGS, sigcontext, sc_regs);
219 OFFSET(SC_PC, sigcontext, sc_pc);
220 BLANK();
221}
222
223static void __used output_signal_defines(void)
224{
225 COMMENT("Linux signal numbers.");
226 DEFINE(_SIGHUP, SIGHUP);
227 DEFINE(_SIGINT, SIGINT);
228 DEFINE(_SIGQUIT, SIGQUIT);
229 DEFINE(_SIGILL, SIGILL);
230 DEFINE(_SIGTRAP, SIGTRAP);
231 DEFINE(_SIGIOT, SIGIOT);
232 DEFINE(_SIGABRT, SIGABRT);
233 DEFINE(_SIGFPE, SIGFPE);
234 DEFINE(_SIGKILL, SIGKILL);
235 DEFINE(_SIGBUS, SIGBUS);
236 DEFINE(_SIGSEGV, SIGSEGV);
237 DEFINE(_SIGSYS, SIGSYS);
238 DEFINE(_SIGPIPE, SIGPIPE);
239 DEFINE(_SIGALRM, SIGALRM);
240 DEFINE(_SIGTERM, SIGTERM);
241 DEFINE(_SIGUSR1, SIGUSR1);
242 DEFINE(_SIGUSR2, SIGUSR2);
243 DEFINE(_SIGCHLD, SIGCHLD);
244 DEFINE(_SIGPWR, SIGPWR);
245 DEFINE(_SIGWINCH, SIGWINCH);
246 DEFINE(_SIGURG, SIGURG);
247 DEFINE(_SIGIO, SIGIO);
248 DEFINE(_SIGSTOP, SIGSTOP);
249 DEFINE(_SIGTSTP, SIGTSTP);
250 DEFINE(_SIGCONT, SIGCONT);
251 DEFINE(_SIGTTIN, SIGTTIN);
252 DEFINE(_SIGTTOU, SIGTTOU);
253 DEFINE(_SIGVTALRM, SIGVTALRM);
254 DEFINE(_SIGPROF, SIGPROF);
255 DEFINE(_SIGXCPU, SIGXCPU);
256 DEFINE(_SIGXFSZ, SIGXFSZ);
257 BLANK();
258}
259
260#ifdef CONFIG_SMP
261static void __used output_smpboot_defines(void)
262{
263 COMMENT("Linux smp cpu boot offsets.");
264 OFFSET(CPU_BOOT_STACK, secondary_data, stack);
265 OFFSET(CPU_BOOT_TINFO, secondary_data, thread_info);
266 BLANK();
267}
268#endif
269
270#ifdef CONFIG_HIBERNATION
271static void __used output_pbe_defines(void)
272{
273 COMMENT("Linux struct pbe offsets.");
274 OFFSET(PBE_ADDRESS, pbe, address);
275 OFFSET(PBE_ORIG_ADDRESS, pbe, orig_address);
276 OFFSET(PBE_NEXT, pbe, next);
277 DEFINE(PBE_SIZE, sizeof(struct pbe));
278 BLANK();
279}
280#endif
281
282#ifdef CONFIG_FUNCTION_GRAPH_TRACER
283static void __used output_fgraph_ret_regs_defines(void)
284{
285 COMMENT("LoongArch fgraph_ret_regs offsets.");
286 OFFSET(FGRET_REGS_A0, fgraph_ret_regs, regs[0]);
287 OFFSET(FGRET_REGS_A1, fgraph_ret_regs, regs[1]);
288 OFFSET(FGRET_REGS_FP, fgraph_ret_regs, fp);
289 DEFINE(FGRET_REGS_SIZE, sizeof(struct fgraph_ret_regs));
290 BLANK();
291}
292#endif
293
294static void __used output_kvm_defines(void)
295{
296 COMMENT("KVM/LoongArch Specific offsets.");
297
298 OFFSET(VCPU_FCC, kvm_vcpu_arch, fpu.fcc);
299 OFFSET(VCPU_FCSR0, kvm_vcpu_arch, fpu.fcsr);
300 BLANK();
301
302 OFFSET(KVM_VCPU_ARCH, kvm_vcpu, arch);
303 OFFSET(KVM_VCPU_KVM, kvm_vcpu, kvm);
304 OFFSET(KVM_VCPU_RUN, kvm_vcpu, run);
305 BLANK();
306
307 OFFSET(KVM_ARCH_HSP, kvm_vcpu_arch, host_sp);
308 OFFSET(KVM_ARCH_HTP, kvm_vcpu_arch, host_tp);
309 OFFSET(KVM_ARCH_HPGD, kvm_vcpu_arch, host_pgd);
310 OFFSET(KVM_ARCH_HANDLE_EXIT, kvm_vcpu_arch, handle_exit);
311 OFFSET(KVM_ARCH_HEENTRY, kvm_vcpu_arch, host_eentry);
312 OFFSET(KVM_ARCH_GEENTRY, kvm_vcpu_arch, guest_eentry);
313 OFFSET(KVM_ARCH_GPC, kvm_vcpu_arch, pc);
314 OFFSET(KVM_ARCH_GGPR, kvm_vcpu_arch, gprs);
315 OFFSET(KVM_ARCH_HBADI, kvm_vcpu_arch, badi);
316 OFFSET(KVM_ARCH_HBADV, kvm_vcpu_arch, badv);
317 OFFSET(KVM_ARCH_HECFG, kvm_vcpu_arch, host_ecfg);
318 OFFSET(KVM_ARCH_HESTAT, kvm_vcpu_arch, host_estat);
319 OFFSET(KVM_ARCH_HPERCPU, kvm_vcpu_arch, host_percpu);
320
321 OFFSET(KVM_GPGD, kvm, arch.pgd);
322 BLANK();
323}
324

source code of linux/arch/loongarch/kernel/asm-offsets.c