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