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 22 static 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 69 static 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 84 static 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 } 99 100 static 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 } 135 136 static 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 } 176 177 static 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 } 186 187 static 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 } 218 219 static 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 } 227 228 static 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 266 static 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 276 static 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 286 287 static 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 } 318 319 static void __used output_vdso_defines(void) 320 { 321 COMMENT("LoongArch vDSO offsets."); 322 323 DEFINE(__VDSO_PAGES, VDSO_NR_PAGES); 324 BLANK(); 325 } 326