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 <linux/kvm_host.h> 13 #include <asm/cpu-info.h> 14 #include <asm/ptrace.h> 15 #include <asm/processor.h> 16 #include <asm/ftrace.h> 17 18 static void __used output_ptreg_defines(void) 19 { 20 COMMENT("LoongArch pt_regs offsets."); 21 OFFSET(PT_R0, pt_regs, regs[0]); 22 OFFSET(PT_R1, pt_regs, regs[1]); 23 OFFSET(PT_R2, pt_regs, regs[2]); 24 OFFSET(PT_R3, pt_regs, regs[3]); 25 OFFSET(PT_R4, pt_regs, regs[4]); 26 OFFSET(PT_R5, pt_regs, regs[5]); 27 OFFSET(PT_R6, pt_regs, regs[6]); 28 OFFSET(PT_R7, pt_regs, regs[7]); 29 OFFSET(PT_R8, pt_regs, regs[8]); 30 OFFSET(PT_R9, pt_regs, regs[9]); 31 OFFSET(PT_R10, pt_regs, regs[10]); 32 OFFSET(PT_R11, pt_regs, regs[11]); 33 OFFSET(PT_R12, pt_regs, regs[12]); 34 OFFSET(PT_R13, pt_regs, regs[13]); 35 OFFSET(PT_R14, pt_regs, regs[14]); 36 OFFSET(PT_R15, pt_regs, regs[15]); 37 OFFSET(PT_R16, pt_regs, regs[16]); 38 OFFSET(PT_R17, pt_regs, regs[17]); 39 OFFSET(PT_R18, pt_regs, regs[18]); 40 OFFSET(PT_R19, pt_regs, regs[19]); 41 OFFSET(PT_R20, pt_regs, regs[20]); 42 OFFSET(PT_R21, pt_regs, regs[21]); 43 OFFSET(PT_R22, pt_regs, regs[22]); 44 OFFSET(PT_R23, pt_regs, regs[23]); 45 OFFSET(PT_R24, pt_regs, regs[24]); 46 OFFSET(PT_R25, pt_regs, regs[25]); 47 OFFSET(PT_R26, pt_regs, regs[26]); 48 OFFSET(PT_R27, pt_regs, regs[27]); 49 OFFSET(PT_R28, pt_regs, regs[28]); 50 OFFSET(PT_R29, pt_regs, regs[29]); 51 OFFSET(PT_R30, pt_regs, regs[30]); 52 OFFSET(PT_R31, pt_regs, regs[31]); 53 OFFSET(PT_CRMD, pt_regs, csr_crmd); 54 OFFSET(PT_PRMD, pt_regs, csr_prmd); 55 OFFSET(PT_EUEN, pt_regs, csr_euen); 56 OFFSET(PT_ECFG, pt_regs, csr_ecfg); 57 OFFSET(PT_ESTAT, pt_regs, csr_estat); 58 OFFSET(PT_ERA, pt_regs, csr_era); 59 OFFSET(PT_BVADDR, pt_regs, csr_badvaddr); 60 OFFSET(PT_ORIG_A0, pt_regs, orig_a0); 61 DEFINE(PT_SIZE, sizeof(struct pt_regs)); 62 BLANK(); 63 } 64 65 static void __used output_task_defines(void) 66 { 67 COMMENT("LoongArch task_struct offsets."); 68 OFFSET(TASK_STATE, task_struct, __state); 69 OFFSET(TASK_THREAD_INFO, task_struct, stack); 70 OFFSET(TASK_FLAGS, task_struct, flags); 71 OFFSET(TASK_MM, task_struct, mm); 72 OFFSET(TASK_PID, task_struct, pid); 73 #if defined(CONFIG_STACKPROTECTOR) 74 OFFSET(TASK_STACK_CANARY, task_struct, stack_canary); 75 #endif 76 DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct)); 77 BLANK(); 78 } 79 80 static void __used output_thread_info_defines(void) 81 { 82 COMMENT("LoongArch thread_info offsets."); 83 OFFSET(TI_TASK, thread_info, task); 84 OFFSET(TI_FLAGS, thread_info, flags); 85 OFFSET(TI_TP_VALUE, thread_info, tp_value); 86 OFFSET(TI_CPU, thread_info, cpu); 87 OFFSET(TI_PRE_COUNT, thread_info, preempt_count); 88 OFFSET(TI_REGS, thread_info, regs); 89 DEFINE(_THREAD_SIZE, THREAD_SIZE); 90 DEFINE(_THREAD_MASK, THREAD_MASK); 91 DEFINE(_IRQ_STACK_SIZE, IRQ_STACK_SIZE); 92 DEFINE(_IRQ_STACK_START, IRQ_STACK_START); 93 BLANK(); 94 } 95 96 static void __used output_thread_defines(void) 97 { 98 COMMENT("LoongArch specific thread_struct offsets."); 99 OFFSET(THREAD_REG01, task_struct, thread.reg01); 100 OFFSET(THREAD_REG03, task_struct, thread.reg03); 101 OFFSET(THREAD_REG22, task_struct, thread.reg22); 102 OFFSET(THREAD_REG23, task_struct, thread.reg23); 103 OFFSET(THREAD_REG24, task_struct, thread.reg24); 104 OFFSET(THREAD_REG25, task_struct, thread.reg25); 105 OFFSET(THREAD_REG26, task_struct, thread.reg26); 106 OFFSET(THREAD_REG27, task_struct, thread.reg27); 107 OFFSET(THREAD_REG28, task_struct, thread.reg28); 108 OFFSET(THREAD_REG29, task_struct, thread.reg29); 109 OFFSET(THREAD_REG30, task_struct, thread.reg30); 110 OFFSET(THREAD_REG31, task_struct, thread.reg31); 111 OFFSET(THREAD_SCHED_RA, task_struct, thread.sched_ra); 112 OFFSET(THREAD_SCHED_CFA, task_struct, thread.sched_cfa); 113 OFFSET(THREAD_CSRCRMD, task_struct, 114 thread.csr_crmd); 115 OFFSET(THREAD_CSRPRMD, task_struct, 116 thread.csr_prmd); 117 OFFSET(THREAD_CSREUEN, task_struct, 118 thread.csr_euen); 119 OFFSET(THREAD_CSRECFG, task_struct, 120 thread.csr_ecfg); 121 122 OFFSET(THREAD_FPU, task_struct, thread.fpu); 123 124 OFFSET(THREAD_BVADDR, task_struct, \ 125 thread.csr_badvaddr); 126 OFFSET(THREAD_ECODE, task_struct, \ 127 thread.error_code); 128 OFFSET(THREAD_TRAPNO, task_struct, thread.trap_nr); 129 BLANK(); 130 } 131 132 static void __used output_thread_fpu_defines(void) 133 { 134 OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]); 135 OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]); 136 OFFSET(THREAD_FPR2, loongarch_fpu, fpr[2]); 137 OFFSET(THREAD_FPR3, loongarch_fpu, fpr[3]); 138 OFFSET(THREAD_FPR4, loongarch_fpu, fpr[4]); 139 OFFSET(THREAD_FPR5, loongarch_fpu, fpr[5]); 140 OFFSET(THREAD_FPR6, loongarch_fpu, fpr[6]); 141 OFFSET(THREAD_FPR7, loongarch_fpu, fpr[7]); 142 OFFSET(THREAD_FPR8, loongarch_fpu, fpr[8]); 143 OFFSET(THREAD_FPR9, loongarch_fpu, fpr[9]); 144 OFFSET(THREAD_FPR10, loongarch_fpu, fpr[10]); 145 OFFSET(THREAD_FPR11, loongarch_fpu, fpr[11]); 146 OFFSET(THREAD_FPR12, loongarch_fpu, fpr[12]); 147 OFFSET(THREAD_FPR13, loongarch_fpu, fpr[13]); 148 OFFSET(THREAD_FPR14, loongarch_fpu, fpr[14]); 149 OFFSET(THREAD_FPR15, loongarch_fpu, fpr[15]); 150 OFFSET(THREAD_FPR16, loongarch_fpu, fpr[16]); 151 OFFSET(THREAD_FPR17, loongarch_fpu, fpr[17]); 152 OFFSET(THREAD_FPR18, loongarch_fpu, fpr[18]); 153 OFFSET(THREAD_FPR19, loongarch_fpu, fpr[19]); 154 OFFSET(THREAD_FPR20, loongarch_fpu, fpr[20]); 155 OFFSET(THREAD_FPR21, loongarch_fpu, fpr[21]); 156 OFFSET(THREAD_FPR22, loongarch_fpu, fpr[22]); 157 OFFSET(THREAD_FPR23, loongarch_fpu, fpr[23]); 158 OFFSET(THREAD_FPR24, loongarch_fpu, fpr[24]); 159 OFFSET(THREAD_FPR25, loongarch_fpu, fpr[25]); 160 OFFSET(THREAD_FPR26, loongarch_fpu, fpr[26]); 161 OFFSET(THREAD_FPR27, loongarch_fpu, fpr[27]); 162 OFFSET(THREAD_FPR28, loongarch_fpu, fpr[28]); 163 OFFSET(THREAD_FPR29, loongarch_fpu, fpr[29]); 164 OFFSET(THREAD_FPR30, loongarch_fpu, fpr[30]); 165 OFFSET(THREAD_FPR31, loongarch_fpu, fpr[31]); 166 167 OFFSET(THREAD_FCSR, loongarch_fpu, fcsr); 168 OFFSET(THREAD_FCC, loongarch_fpu, fcc); 169 OFFSET(THREAD_FTOP, loongarch_fpu, ftop); 170 BLANK(); 171 } 172 173 static void __used output_thread_lbt_defines(void) 174 { 175 OFFSET(THREAD_SCR0, loongarch_lbt, scr0); 176 OFFSET(THREAD_SCR1, loongarch_lbt, scr1); 177 OFFSET(THREAD_SCR2, loongarch_lbt, scr2); 178 OFFSET(THREAD_SCR3, loongarch_lbt, scr3); 179 OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags); 180 BLANK(); 181 } 182 183 static void __used output_mm_defines(void) 184 { 185 COMMENT("Size of struct page"); 186 DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page)); 187 BLANK(); 188 COMMENT("Linux mm_struct offsets."); 189 OFFSET(MM_USERS, mm_struct, mm_users); 190 OFFSET(MM_PGD, mm_struct, pgd); 191 OFFSET(MM_CONTEXT, mm_struct, context); 192 BLANK(); 193 DEFINE(_PGD_T_SIZE, sizeof(pgd_t)); 194 DEFINE(_PMD_T_SIZE, sizeof(pmd_t)); 195 DEFINE(_PTE_T_SIZE, sizeof(pte_t)); 196 BLANK(); 197 DEFINE(_PGD_T_LOG2, PGD_T_LOG2); 198 #ifndef __PAGETABLE_PMD_FOLDED 199 DEFINE(_PMD_T_LOG2, PMD_T_LOG2); 200 #endif 201 DEFINE(_PTE_T_LOG2, PTE_T_LOG2); 202 BLANK(); 203 DEFINE(_PMD_SHIFT, PMD_SHIFT); 204 DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT); 205 BLANK(); 206 DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD); 207 DEFINE(_PTRS_PER_PMD, PTRS_PER_PMD); 208 DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE); 209 BLANK(); 210 DEFINE(_PAGE_SHIFT, PAGE_SHIFT); 211 DEFINE(_PAGE_SIZE, PAGE_SIZE); 212 BLANK(); 213 } 214 215 static void __used output_sc_defines(void) 216 { 217 COMMENT("Linux sigcontext offsets."); 218 OFFSET(SC_REGS, sigcontext, sc_regs); 219 OFFSET(SC_PC, sigcontext, sc_pc); 220 BLANK(); 221 } 222 223 static void __used output_signal_defines(void) 224 { 225 COMMENT("Linux signal numbers."); 226 DEFINE(_SIGHUP, SIGHUP); 227 DEFINE(_SIGINT, SIGINT); 228 DEFINE(_SIGQUIT, SIGQUIT); 229 DEFINE(_SIGILL, SIGILL); 230 DEFINE(_SIGTRAP, SIGTRAP); 231 DEFINE(_SIGIOT, SIGIOT); 232 DEFINE(_SIGABRT, SIGABRT); 233 DEFINE(_SIGFPE, SIGFPE); 234 DEFINE(_SIGKILL, SIGKILL); 235 DEFINE(_SIGBUS, SIGBUS); 236 DEFINE(_SIGSEGV, SIGSEGV); 237 DEFINE(_SIGSYS, SIGSYS); 238 DEFINE(_SIGPIPE, SIGPIPE); 239 DEFINE(_SIGALRM, SIGALRM); 240 DEFINE(_SIGTERM, SIGTERM); 241 DEFINE(_SIGUSR1, SIGUSR1); 242 DEFINE(_SIGUSR2, SIGUSR2); 243 DEFINE(_SIGCHLD, SIGCHLD); 244 DEFINE(_SIGPWR, SIGPWR); 245 DEFINE(_SIGWINCH, SIGWINCH); 246 DEFINE(_SIGURG, SIGURG); 247 DEFINE(_SIGIO, SIGIO); 248 DEFINE(_SIGSTOP, SIGSTOP); 249 DEFINE(_SIGTSTP, SIGTSTP); 250 DEFINE(_SIGCONT, SIGCONT); 251 DEFINE(_SIGTTIN, SIGTTIN); 252 DEFINE(_SIGTTOU, SIGTTOU); 253 DEFINE(_SIGVTALRM, SIGVTALRM); 254 DEFINE(_SIGPROF, SIGPROF); 255 DEFINE(_SIGXCPU, SIGXCPU); 256 DEFINE(_SIGXFSZ, SIGXFSZ); 257 BLANK(); 258 } 259 260 #ifdef CONFIG_SMP 261 static void __used output_smpboot_defines(void) 262 { 263 COMMENT("Linux smp cpu boot offsets."); 264 OFFSET(CPU_BOOT_STACK, secondary_data, stack); 265 OFFSET(CPU_BOOT_TINFO, secondary_data, thread_info); 266 BLANK(); 267 } 268 #endif 269 270 #ifdef CONFIG_HIBERNATION 271 static void __used output_pbe_defines(void) 272 { 273 COMMENT("Linux struct pbe offsets."); 274 OFFSET(PBE_ADDRESS, pbe, address); 275 OFFSET(PBE_ORIG_ADDRESS, pbe, orig_address); 276 OFFSET(PBE_NEXT, pbe, next); 277 DEFINE(PBE_SIZE, sizeof(struct pbe)); 278 BLANK(); 279 } 280 #endif 281 282 #ifdef CONFIG_FUNCTION_GRAPH_TRACER 283 static void __used output_fgraph_ret_regs_defines(void) 284 { 285 COMMENT("LoongArch fgraph_ret_regs offsets."); 286 OFFSET(FGRET_REGS_A0, fgraph_ret_regs, regs[0]); 287 OFFSET(FGRET_REGS_A1, fgraph_ret_regs, regs[1]); 288 OFFSET(FGRET_REGS_FP, fgraph_ret_regs, fp); 289 DEFINE(FGRET_REGS_SIZE, sizeof(struct fgraph_ret_regs)); 290 BLANK(); 291 } 292 #endif 293 294 static void __used output_kvm_defines(void) 295 { 296 COMMENT("KVM/LoongArch Specific offsets."); 297 298 OFFSET(VCPU_FCC, kvm_vcpu_arch, fpu.fcc); 299 OFFSET(VCPU_FCSR0, kvm_vcpu_arch, fpu.fcsr); 300 BLANK(); 301 302 OFFSET(KVM_VCPU_ARCH, kvm_vcpu, arch); 303 OFFSET(KVM_VCPU_KVM, kvm_vcpu, kvm); 304 OFFSET(KVM_VCPU_RUN, kvm_vcpu, run); 305 BLANK(); 306 307 OFFSET(KVM_ARCH_HSP, kvm_vcpu_arch, host_sp); 308 OFFSET(KVM_ARCH_HTP, kvm_vcpu_arch, host_tp); 309 OFFSET(KVM_ARCH_HPGD, kvm_vcpu_arch, host_pgd); 310 OFFSET(KVM_ARCH_HANDLE_EXIT, kvm_vcpu_arch, handle_exit); 311 OFFSET(KVM_ARCH_HEENTRY, kvm_vcpu_arch, host_eentry); 312 OFFSET(KVM_ARCH_GEENTRY, kvm_vcpu_arch, guest_eentry); 313 OFFSET(KVM_ARCH_GPC, kvm_vcpu_arch, pc); 314 OFFSET(KVM_ARCH_GGPR, kvm_vcpu_arch, gprs); 315 OFFSET(KVM_ARCH_HBADI, kvm_vcpu_arch, badi); 316 OFFSET(KVM_ARCH_HBADV, kvm_vcpu_arch, badv); 317 OFFSET(KVM_ARCH_HECFG, kvm_vcpu_arch, host_ecfg); 318 OFFSET(KVM_ARCH_HESTAT, kvm_vcpu_arch, host_estat); 319 OFFSET(KVM_ARCH_HPERCPU, kvm_vcpu_arch, host_percpu); 320 321 OFFSET(KVM_GPGD, kvm, arch.pgd); 322 BLANK(); 323 } 324