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 292