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 <asm/sigframe.h>
20 #include <vdso/datapage.h>
21
output_ptreg_defines(void)22 static void __used output_ptreg_defines(void)
23 {
24 COMMENT("LoongArch pt_regs offsets.");
25 OFFSET(PT_R0, pt_regs, regs[0]);
26 OFFSET(PT_R1, pt_regs, regs[1]);
27 OFFSET(PT_R2, pt_regs, regs[2]);
28 OFFSET(PT_R3, pt_regs, regs[3]);
29 OFFSET(PT_R4, pt_regs, regs[4]);
30 OFFSET(PT_R5, pt_regs, regs[5]);
31 OFFSET(PT_R6, pt_regs, regs[6]);
32 OFFSET(PT_R7, pt_regs, regs[7]);
33 OFFSET(PT_R8, pt_regs, regs[8]);
34 OFFSET(PT_R9, pt_regs, regs[9]);
35 OFFSET(PT_R10, pt_regs, regs[10]);
36 OFFSET(PT_R11, pt_regs, regs[11]);
37 OFFSET(PT_R12, pt_regs, regs[12]);
38 OFFSET(PT_R13, pt_regs, regs[13]);
39 OFFSET(PT_R14, pt_regs, regs[14]);
40 OFFSET(PT_R15, pt_regs, regs[15]);
41 OFFSET(PT_R16, pt_regs, regs[16]);
42 OFFSET(PT_R17, pt_regs, regs[17]);
43 OFFSET(PT_R18, pt_regs, regs[18]);
44 OFFSET(PT_R19, pt_regs, regs[19]);
45 OFFSET(PT_R20, pt_regs, regs[20]);
46 OFFSET(PT_R21, pt_regs, regs[21]);
47 OFFSET(PT_R22, pt_regs, regs[22]);
48 OFFSET(PT_R23, pt_regs, regs[23]);
49 OFFSET(PT_R24, pt_regs, regs[24]);
50 OFFSET(PT_R25, pt_regs, regs[25]);
51 OFFSET(PT_R26, pt_regs, regs[26]);
52 OFFSET(PT_R27, pt_regs, regs[27]);
53 OFFSET(PT_R28, pt_regs, regs[28]);
54 OFFSET(PT_R29, pt_regs, regs[29]);
55 OFFSET(PT_R30, pt_regs, regs[30]);
56 OFFSET(PT_R31, pt_regs, regs[31]);
57 OFFSET(PT_CRMD, pt_regs, csr_crmd);
58 OFFSET(PT_PRMD, pt_regs, csr_prmd);
59 OFFSET(PT_EUEN, pt_regs, csr_euen);
60 OFFSET(PT_ECFG, pt_regs, csr_ecfg);
61 OFFSET(PT_ESTAT, pt_regs, csr_estat);
62 OFFSET(PT_ERA, pt_regs, csr_era);
63 OFFSET(PT_BVADDR, pt_regs, csr_badvaddr);
64 OFFSET(PT_ORIG_A0, pt_regs, orig_a0);
65 DEFINE(PT_SIZE, sizeof(struct pt_regs));
66 BLANK();
67 }
68
output_task_defines(void)69 static void __used output_task_defines(void)
70 {
71 COMMENT("LoongArch task_struct offsets.");
72 OFFSET(TASK_STATE, task_struct, __state);
73 OFFSET(TASK_THREAD_INFO, task_struct, stack);
74 OFFSET(TASK_FLAGS, task_struct, flags);
75 OFFSET(TASK_MM, task_struct, mm);
76 OFFSET(TASK_PID, task_struct, pid);
77 #if defined(CONFIG_STACKPROTECTOR)
78 OFFSET(TASK_STACK_CANARY, task_struct, stack_canary);
79 #endif
80 DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
81 BLANK();
82 }
83
output_thread_info_defines(void)84 static void __used output_thread_info_defines(void)
85 {
86 COMMENT("LoongArch thread_info offsets.");
87 OFFSET(TI_TASK, thread_info, task);
88 OFFSET(TI_FLAGS, thread_info, flags);
89 OFFSET(TI_TP_VALUE, thread_info, tp_value);
90 OFFSET(TI_CPU, thread_info, cpu);
91 OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
92 OFFSET(TI_REGS, thread_info, regs);
93 DEFINE(_THREAD_SIZE, THREAD_SIZE);
94 DEFINE(_THREAD_MASK, THREAD_MASK);
95 DEFINE(_IRQ_STACK_SIZE, IRQ_STACK_SIZE);
96 DEFINE(_IRQ_STACK_START, IRQ_STACK_START);
97 BLANK();
98 }
99
output_thread_defines(void)100 static void __used output_thread_defines(void)
101 {
102 COMMENT("LoongArch specific thread_struct offsets.");
103 OFFSET(THREAD_REG01, task_struct, thread.reg01);
104 OFFSET(THREAD_REG03, task_struct, thread.reg03);
105 OFFSET(THREAD_REG22, task_struct, thread.reg22);
106 OFFSET(THREAD_REG23, task_struct, thread.reg23);
107 OFFSET(THREAD_REG24, task_struct, thread.reg24);
108 OFFSET(THREAD_REG25, task_struct, thread.reg25);
109 OFFSET(THREAD_REG26, task_struct, thread.reg26);
110 OFFSET(THREAD_REG27, task_struct, thread.reg27);
111 OFFSET(THREAD_REG28, task_struct, thread.reg28);
112 OFFSET(THREAD_REG29, task_struct, thread.reg29);
113 OFFSET(THREAD_REG30, task_struct, thread.reg30);
114 OFFSET(THREAD_REG31, task_struct, thread.reg31);
115 OFFSET(THREAD_SCHED_RA, task_struct, thread.sched_ra);
116 OFFSET(THREAD_SCHED_CFA, task_struct, thread.sched_cfa);
117 OFFSET(THREAD_CSRCRMD, task_struct,
118 thread.csr_crmd);
119 OFFSET(THREAD_CSRPRMD, task_struct,
120 thread.csr_prmd);
121 OFFSET(THREAD_CSREUEN, task_struct,
122 thread.csr_euen);
123 OFFSET(THREAD_CSRECFG, task_struct,
124 thread.csr_ecfg);
125
126 OFFSET(THREAD_FPU, task_struct, thread.fpu);
127
128 OFFSET(THREAD_BVADDR, task_struct, \
129 thread.csr_badvaddr);
130 OFFSET(THREAD_ECODE, task_struct, \
131 thread.error_code);
132 OFFSET(THREAD_TRAPNO, task_struct, thread.trap_nr);
133 BLANK();
134 }
135
output_thread_fpu_defines(void)136 static void __used output_thread_fpu_defines(void)
137 {
138 OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]);
139 OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]);
140 OFFSET(THREAD_FPR2, loongarch_fpu, fpr[2]);
141 OFFSET(THREAD_FPR3, loongarch_fpu, fpr[3]);
142 OFFSET(THREAD_FPR4, loongarch_fpu, fpr[4]);
143 OFFSET(THREAD_FPR5, loongarch_fpu, fpr[5]);
144 OFFSET(THREAD_FPR6, loongarch_fpu, fpr[6]);
145 OFFSET(THREAD_FPR7, loongarch_fpu, fpr[7]);
146 OFFSET(THREAD_FPR8, loongarch_fpu, fpr[8]);
147 OFFSET(THREAD_FPR9, loongarch_fpu, fpr[9]);
148 OFFSET(THREAD_FPR10, loongarch_fpu, fpr[10]);
149 OFFSET(THREAD_FPR11, loongarch_fpu, fpr[11]);
150 OFFSET(THREAD_FPR12, loongarch_fpu, fpr[12]);
151 OFFSET(THREAD_FPR13, loongarch_fpu, fpr[13]);
152 OFFSET(THREAD_FPR14, loongarch_fpu, fpr[14]);
153 OFFSET(THREAD_FPR15, loongarch_fpu, fpr[15]);
154 OFFSET(THREAD_FPR16, loongarch_fpu, fpr[16]);
155 OFFSET(THREAD_FPR17, loongarch_fpu, fpr[17]);
156 OFFSET(THREAD_FPR18, loongarch_fpu, fpr[18]);
157 OFFSET(THREAD_FPR19, loongarch_fpu, fpr[19]);
158 OFFSET(THREAD_FPR20, loongarch_fpu, fpr[20]);
159 OFFSET(THREAD_FPR21, loongarch_fpu, fpr[21]);
160 OFFSET(THREAD_FPR22, loongarch_fpu, fpr[22]);
161 OFFSET(THREAD_FPR23, loongarch_fpu, fpr[23]);
162 OFFSET(THREAD_FPR24, loongarch_fpu, fpr[24]);
163 OFFSET(THREAD_FPR25, loongarch_fpu, fpr[25]);
164 OFFSET(THREAD_FPR26, loongarch_fpu, fpr[26]);
165 OFFSET(THREAD_FPR27, loongarch_fpu, fpr[27]);
166 OFFSET(THREAD_FPR28, loongarch_fpu, fpr[28]);
167 OFFSET(THREAD_FPR29, loongarch_fpu, fpr[29]);
168 OFFSET(THREAD_FPR30, loongarch_fpu, fpr[30]);
169 OFFSET(THREAD_FPR31, loongarch_fpu, fpr[31]);
170
171 OFFSET(THREAD_FCSR, loongarch_fpu, fcsr);
172 OFFSET(THREAD_FCC, loongarch_fpu, fcc);
173 OFFSET(THREAD_FTOP, loongarch_fpu, ftop);
174 BLANK();
175 }
176
output_thread_lbt_defines(void)177 static void __used output_thread_lbt_defines(void)
178 {
179 OFFSET(THREAD_SCR0, loongarch_lbt, scr0);
180 OFFSET(THREAD_SCR1, loongarch_lbt, scr1);
181 OFFSET(THREAD_SCR2, loongarch_lbt, scr2);
182 OFFSET(THREAD_SCR3, loongarch_lbt, scr3);
183 OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags);
184 BLANK();
185 }
186
output_mm_defines(void)187 static void __used output_mm_defines(void)
188 {
189 COMMENT("Size of struct page");
190 DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
191 BLANK();
192 COMMENT("Linux mm_struct offsets.");
193 OFFSET(MM_USERS, mm_struct, mm_users);
194 OFFSET(MM_PGD, mm_struct, pgd);
195 OFFSET(MM_CONTEXT, mm_struct, context);
196 BLANK();
197 DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
198 DEFINE(_PMD_T_SIZE, sizeof(pmd_t));
199 DEFINE(_PTE_T_SIZE, sizeof(pte_t));
200 BLANK();
201 DEFINE(_PGD_T_LOG2, PGD_T_LOG2);
202 #ifndef __PAGETABLE_PMD_FOLDED
203 DEFINE(_PMD_T_LOG2, PMD_T_LOG2);
204 #endif
205 DEFINE(_PTE_T_LOG2, PTE_T_LOG2);
206 BLANK();
207 DEFINE(_PMD_SHIFT, PMD_SHIFT);
208 DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
209 BLANK();
210 DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
211 DEFINE(_PTRS_PER_PMD, PTRS_PER_PMD);
212 DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
213 BLANK();
214 DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
215 DEFINE(_PAGE_SIZE, PAGE_SIZE);
216 BLANK();
217 }
218
output_sc_defines(void)219 static void __used output_sc_defines(void)
220 {
221 COMMENT("Linux sigcontext offsets.");
222 OFFSET(SC_REGS, sigcontext, sc_regs);
223 OFFSET(SC_PC, sigcontext, sc_pc);
224 OFFSET(RT_SIGFRAME_SC, rt_sigframe, rs_uctx.uc_mcontext);
225 BLANK();
226 }
227
output_signal_defines(void)228 static void __used output_signal_defines(void)
229 {
230 COMMENT("Linux signal numbers.");
231 DEFINE(_SIGHUP, SIGHUP);
232 DEFINE(_SIGINT, SIGINT);
233 DEFINE(_SIGQUIT, SIGQUIT);
234 DEFINE(_SIGILL, SIGILL);
235 DEFINE(_SIGTRAP, SIGTRAP);
236 DEFINE(_SIGIOT, SIGIOT);
237 DEFINE(_SIGABRT, SIGABRT);
238 DEFINE(_SIGFPE, SIGFPE);
239 DEFINE(_SIGKILL, SIGKILL);
240 DEFINE(_SIGBUS, SIGBUS);
241 DEFINE(_SIGSEGV, SIGSEGV);
242 DEFINE(_SIGSYS, SIGSYS);
243 DEFINE(_SIGPIPE, SIGPIPE);
244 DEFINE(_SIGALRM, SIGALRM);
245 DEFINE(_SIGTERM, SIGTERM);
246 DEFINE(_SIGUSR1, SIGUSR1);
247 DEFINE(_SIGUSR2, SIGUSR2);
248 DEFINE(_SIGCHLD, SIGCHLD);
249 DEFINE(_SIGPWR, SIGPWR);
250 DEFINE(_SIGWINCH, SIGWINCH);
251 DEFINE(_SIGURG, SIGURG);
252 DEFINE(_SIGIO, SIGIO);
253 DEFINE(_SIGSTOP, SIGSTOP);
254 DEFINE(_SIGTSTP, SIGTSTP);
255 DEFINE(_SIGCONT, SIGCONT);
256 DEFINE(_SIGTTIN, SIGTTIN);
257 DEFINE(_SIGTTOU, SIGTTOU);
258 DEFINE(_SIGVTALRM, SIGVTALRM);
259 DEFINE(_SIGPROF, SIGPROF);
260 DEFINE(_SIGXCPU, SIGXCPU);
261 DEFINE(_SIGXFSZ, SIGXFSZ);
262 BLANK();
263 }
264
265 #ifdef CONFIG_SMP
output_smpboot_defines(void)266 static void __used output_smpboot_defines(void)
267 {
268 COMMENT("Linux smp cpu boot offsets.");
269 OFFSET(CPU_BOOT_STACK, secondary_data, stack);
270 OFFSET(CPU_BOOT_TINFO, secondary_data, thread_info);
271 BLANK();
272 }
273 #endif
274
275 #ifdef CONFIG_HIBERNATION
output_pbe_defines(void)276 static void __used output_pbe_defines(void)
277 {
278 COMMENT("Linux struct pbe offsets.");
279 OFFSET(PBE_ADDRESS, pbe, address);
280 OFFSET(PBE_ORIG_ADDRESS, pbe, orig_address);
281 OFFSET(PBE_NEXT, pbe, next);
282 DEFINE(PBE_SIZE, sizeof(struct pbe));
283 BLANK();
284 }
285 #endif
286
output_kvm_defines(void)287 static void __used output_kvm_defines(void)
288 {
289 COMMENT("KVM/LoongArch Specific offsets.");
290
291 OFFSET(VCPU_FCC, kvm_vcpu_arch, fpu.fcc);
292 OFFSET(VCPU_FCSR0, kvm_vcpu_arch, fpu.fcsr);
293 BLANK();
294
295 OFFSET(KVM_VCPU_ARCH, kvm_vcpu, arch);
296 OFFSET(KVM_VCPU_KVM, kvm_vcpu, kvm);
297 OFFSET(KVM_VCPU_RUN, kvm_vcpu, run);
298 BLANK();
299
300 OFFSET(KVM_ARCH_HSP, kvm_vcpu_arch, host_sp);
301 OFFSET(KVM_ARCH_HTP, kvm_vcpu_arch, host_tp);
302 OFFSET(KVM_ARCH_HPGD, kvm_vcpu_arch, host_pgd);
303 OFFSET(KVM_ARCH_KVMPGD, kvm_vcpu_arch, kvm_pgd);
304 OFFSET(KVM_ARCH_HANDLE_EXIT, kvm_vcpu_arch, handle_exit);
305 OFFSET(KVM_ARCH_HEENTRY, kvm_vcpu_arch, host_eentry);
306 OFFSET(KVM_ARCH_GEENTRY, kvm_vcpu_arch, guest_eentry);
307 OFFSET(KVM_ARCH_GPC, kvm_vcpu_arch, pc);
308 OFFSET(KVM_ARCH_GGPR, kvm_vcpu_arch, gprs);
309 OFFSET(KVM_ARCH_HBADI, kvm_vcpu_arch, badi);
310 OFFSET(KVM_ARCH_HBADV, kvm_vcpu_arch, badv);
311 OFFSET(KVM_ARCH_HECFG, kvm_vcpu_arch, host_ecfg);
312 OFFSET(KVM_ARCH_HESTAT, kvm_vcpu_arch, host_estat);
313 OFFSET(KVM_ARCH_HPERCPU, kvm_vcpu_arch, host_percpu);
314
315 OFFSET(KVM_GPGD, kvm, arch.pgd);
316 BLANK();
317 }
318
output_vdso_defines(void)319 static void __used output_vdso_defines(void)
320 {
321 COMMENT("LoongArch vDSO offsets.");
322
323 DEFINE(__VDSO_PAGES, VDSO_NR_PAGES);
324 BLANK();
325 }
326