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