arch/loongarch/kernel/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 #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 <asm/cpu-info.h>
  13 #include <asm/ptrace.h>
  14 #include <asm/processor.h>
  15 #include <asm/ftrace.h>
  16
  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
  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
  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
  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
 123         OFFSET(THREAD_BVADDR, task_struct, \
 124                thread.csr_badvaddr);
 125         OFFSET(THREAD_ECODE, task_struct, \
 126                thread.error_code);
 127         OFFSET(THREAD_TRAPNO, task_struct, thread.trap_nr);
 128         BLANK();
 129 }
 130
 131 void output_thread_fpu_defines(void)
 132 {
 133         OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]);
 134         OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]);
 135         OFFSET(THREAD_FPR2, loongarch_fpu, fpr[2]);
 136         OFFSET(THREAD_FPR3, loongarch_fpu, fpr[3]);
 137         OFFSET(THREAD_FPR4, loongarch_fpu, fpr[4]);
 138         OFFSET(THREAD_FPR5, loongarch_fpu, fpr[5]);
 139         OFFSET(THREAD_FPR6, loongarch_fpu, fpr[6]);
 140         OFFSET(THREAD_FPR7, loongarch_fpu, fpr[7]);
 141         OFFSET(THREAD_FPR8, loongarch_fpu, fpr[8]);
 142         OFFSET(THREAD_FPR9, loongarch_fpu, fpr[9]);
 143         OFFSET(THREAD_FPR10, loongarch_fpu, fpr[10]);
 144         OFFSET(THREAD_FPR11, loongarch_fpu, fpr[11]);
 145         OFFSET(THREAD_FPR12, loongarch_fpu, fpr[12]);
 146         OFFSET(THREAD_FPR13, loongarch_fpu, fpr[13]);
 147         OFFSET(THREAD_FPR14, loongarch_fpu, fpr[14]);
 148         OFFSET(THREAD_FPR15, loongarch_fpu, fpr[15]);
 149         OFFSET(THREAD_FPR16, loongarch_fpu, fpr[16]);
 150         OFFSET(THREAD_FPR17, loongarch_fpu, fpr[17]);
 151         OFFSET(THREAD_FPR18, loongarch_fpu, fpr[18]);
 152         OFFSET(THREAD_FPR19, loongarch_fpu, fpr[19]);
 153         OFFSET(THREAD_FPR20, loongarch_fpu, fpr[20]);
 154         OFFSET(THREAD_FPR21, loongarch_fpu, fpr[21]);
 155         OFFSET(THREAD_FPR22, loongarch_fpu, fpr[22]);
 156         OFFSET(THREAD_FPR23, loongarch_fpu, fpr[23]);
 157         OFFSET(THREAD_FPR24, loongarch_fpu, fpr[24]);
 158         OFFSET(THREAD_FPR25, loongarch_fpu, fpr[25]);
 159         OFFSET(THREAD_FPR26, loongarch_fpu, fpr[26]);
 160         OFFSET(THREAD_FPR27, loongarch_fpu, fpr[27]);
 161         OFFSET(THREAD_FPR28, loongarch_fpu, fpr[28]);
 162         OFFSET(THREAD_FPR29, loongarch_fpu, fpr[29]);
 163         OFFSET(THREAD_FPR30, loongarch_fpu, fpr[30]);
 164         OFFSET(THREAD_FPR31, loongarch_fpu, fpr[31]);
 165
 166         OFFSET(THREAD_FCSR, loongarch_fpu, fcsr);
 167         OFFSET(THREAD_FCC,  loongarch_fpu, fcc);
 168         OFFSET(THREAD_FTOP, loongarch_fpu, ftop);
 169         BLANK();
 170 }
 171
 172 void output_thread_lbt_defines(void)
 173 {
 174         OFFSET(THREAD_SCR0,  loongarch_lbt, scr0);
 175         OFFSET(THREAD_SCR1,  loongarch_lbt, scr1);
 176         OFFSET(THREAD_SCR2,  loongarch_lbt, scr2);
 177         OFFSET(THREAD_SCR3,  loongarch_lbt, scr3);
 178         OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags);
 179         BLANK();
 180 }
 181
 182 void output_mm_defines(void)
 183 {
 184         COMMENT("Size of struct page");
 185         DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
 186         BLANK();
 187         COMMENT("Linux mm_struct offsets.");
 188         OFFSET(MM_USERS, mm_struct, mm_users);
 189         OFFSET(MM_PGD, mm_struct, pgd);
 190         OFFSET(MM_CONTEXT, mm_struct, context);
 191         BLANK();
 192         DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
 193         DEFINE(_PMD_T_SIZE, sizeof(pmd_t));
 194         DEFINE(_PTE_T_SIZE, sizeof(pte_t));
 195         BLANK();
 196         DEFINE(_PGD_T_LOG2, PGD_T_LOG2);
 197 #ifndef __PAGETABLE_PMD_FOLDED
 198         DEFINE(_PMD_T_LOG2, PMD_T_LOG2);
 199 #endif
 200         DEFINE(_PTE_T_LOG2, PTE_T_LOG2);
 201         BLANK();
 202         DEFINE(_PMD_SHIFT, PMD_SHIFT);
 203         DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
 204         BLANK();
 205         DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
 206         DEFINE(_PTRS_PER_PMD, PTRS_PER_PMD);
 207         DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
 208         BLANK();
 209         DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
 210         DEFINE(_PAGE_SIZE, PAGE_SIZE);
 211         BLANK();
 212 }
 213
 214 void output_sc_defines(void)
 215 {
 216         COMMENT("Linux sigcontext offsets.");
 217         OFFSET(SC_REGS, sigcontext, sc_regs);
 218         OFFSET(SC_PC, sigcontext, sc_pc);
 219         BLANK();
 220 }
 221
 222 void output_signal_defines(void)
 223 {
 224         COMMENT("Linux signal numbers.");
 225         DEFINE(_SIGHUP, SIGHUP);
 226         DEFINE(_SIGINT, SIGINT);
 227         DEFINE(_SIGQUIT, SIGQUIT);
 228         DEFINE(_SIGILL, SIGILL);
 229         DEFINE(_SIGTRAP, SIGTRAP);
 230         DEFINE(_SIGIOT, SIGIOT);
 231         DEFINE(_SIGABRT, SIGABRT);
 232         DEFINE(_SIGFPE, SIGFPE);
 233         DEFINE(_SIGKILL, SIGKILL);
 234         DEFINE(_SIGBUS, SIGBUS);
 235         DEFINE(_SIGSEGV, SIGSEGV);
 236         DEFINE(_SIGSYS, SIGSYS);
 237         DEFINE(_SIGPIPE, SIGPIPE);
 238         DEFINE(_SIGALRM, SIGALRM);
 239         DEFINE(_SIGTERM, SIGTERM);
 240         DEFINE(_SIGUSR1, SIGUSR1);
 241         DEFINE(_SIGUSR2, SIGUSR2);
 242         DEFINE(_SIGCHLD, SIGCHLD);
 243         DEFINE(_SIGPWR, SIGPWR);
 244         DEFINE(_SIGWINCH, SIGWINCH);
 245         DEFINE(_SIGURG, SIGURG);
 246         DEFINE(_SIGIO, SIGIO);
 247         DEFINE(_SIGSTOP, SIGSTOP);
 248         DEFINE(_SIGTSTP, SIGTSTP);
 249         DEFINE(_SIGCONT, SIGCONT);
 250         DEFINE(_SIGTTIN, SIGTTIN);
 251         DEFINE(_SIGTTOU, SIGTTOU);
 252         DEFINE(_SIGVTALRM, SIGVTALRM);
 253         DEFINE(_SIGPROF, SIGPROF);
 254         DEFINE(_SIGXCPU, SIGXCPU);
 255         DEFINE(_SIGXFSZ, SIGXFSZ);
 256         BLANK();
 257 }
 258
 259 #ifdef CONFIG_SMP
 260 void output_smpboot_defines(void)
 261 {
 262         COMMENT("Linux smp cpu boot offsets.");
 263         OFFSET(CPU_BOOT_STACK, secondary_data, stack);
 264         OFFSET(CPU_BOOT_TINFO, secondary_data, thread_info);
 265         BLANK();
 266 }
 267 #endif
 268
 269 #ifdef CONFIG_HIBERNATION
 270 void output_pbe_defines(void)
 271 {
 272         COMMENT("Linux struct pbe offsets.");
 273         OFFSET(PBE_ADDRESS, pbe, address);
 274         OFFSET(PBE_ORIG_ADDRESS, pbe, orig_address);
 275         OFFSET(PBE_NEXT, pbe, next);
 276         DEFINE(PBE_SIZE, sizeof(struct pbe));
 277         BLANK();
 278 }
 279 #endif
 280
 281 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 282 void output_fgraph_ret_regs_defines(void)
 283 {
 284         COMMENT("LoongArch fgraph_ret_regs offsets.");
 285         OFFSET(FGRET_REGS_A0, fgraph_ret_regs, regs[0]);
 286         OFFSET(FGRET_REGS_A1, fgraph_ret_regs, regs[1]);
 287         OFFSET(FGRET_REGS_FP, fgraph_ret_regs, fp);
 288         DEFINE(FGRET_REGS_SIZE, sizeof(struct fgraph_ret_regs));
 289         BLANK();
 290 }
 291 #endif