asm-offsets.c

  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
 22static 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
 69static 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
 84static 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
100static 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
136static 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
177static 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
187static 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
219static 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
228static 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
266static 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
276static 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
287static 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
319static void __used output_vdso_defines(void)
320{
321	COMMENT("LoongArch vDSO offsets.");
322
323	DEFINE(__VDSO_PAGES, VDSO_NR_PAGES);
324	BLANK();
325}