arch/riscv/kernel/asm-offsets.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2012 Regents of the University of California
   4  * Copyright (C) 2017 SiFive
   5  */
   6
   7 #define GENERATING_ASM_OFFSETS
   8
   9 #include <linux/kbuild.h>
  10 #include <linux/sched.h>
  11 #include <asm/thread_info.h>
  12 #include <asm/ptrace.h>
  13 #include <asm/suspend.h>
  14 #include <asm/cpu_ops_sbi.h>
  15
  16 void asm_offsets(void);
  17
  18 void asm_offsets(void)
  19 {
  20         OFFSET(TASK_THREAD_RA, task_struct, thread.ra);
  21         OFFSET(TASK_THREAD_SP, task_struct, thread.sp);
  22         OFFSET(TASK_THREAD_S0, task_struct, thread.s[0]);
  23         OFFSET(TASK_THREAD_S1, task_struct, thread.s[1]);
  24         OFFSET(TASK_THREAD_S2, task_struct, thread.s[2]);
  25         OFFSET(TASK_THREAD_S3, task_struct, thread.s[3]);
  26         OFFSET(TASK_THREAD_S4, task_struct, thread.s[4]);
  27         OFFSET(TASK_THREAD_S5, task_struct, thread.s[5]);
  28         OFFSET(TASK_THREAD_S6, task_struct, thread.s[6]);
  29         OFFSET(TASK_THREAD_S7, task_struct, thread.s[7]);
  30         OFFSET(TASK_THREAD_S8, task_struct, thread.s[8]);
  31         OFFSET(TASK_THREAD_S9, task_struct, thread.s[9]);
  32         OFFSET(TASK_THREAD_S10, task_struct, thread.s[10]);
  33         OFFSET(TASK_THREAD_S11, task_struct, thread.s[11]);
  34         OFFSET(TASK_TI_FLAGS, task_struct, thread_info.flags);
  35         OFFSET(TASK_TI_PREEMPT_COUNT, task_struct, thread_info.preempt_count);
  36         OFFSET(TASK_TI_KERNEL_SP, task_struct, thread_info.kernel_sp);
  37         OFFSET(TASK_TI_USER_SP, task_struct, thread_info.user_sp);
  38         OFFSET(TASK_TI_CPU, task_struct, thread_info.cpu);
  39
  40         OFFSET(TASK_THREAD_F0,  task_struct, thread.fstate.f[0]);
  41         OFFSET(TASK_THREAD_F1,  task_struct, thread.fstate.f[1]);
  42         OFFSET(TASK_THREAD_F2,  task_struct, thread.fstate.f[2]);
  43         OFFSET(TASK_THREAD_F3,  task_struct, thread.fstate.f[3]);
  44         OFFSET(TASK_THREAD_F4,  task_struct, thread.fstate.f[4]);
  45         OFFSET(TASK_THREAD_F5,  task_struct, thread.fstate.f[5]);
  46         OFFSET(TASK_THREAD_F6,  task_struct, thread.fstate.f[6]);
  47         OFFSET(TASK_THREAD_F7,  task_struct, thread.fstate.f[7]);
  48         OFFSET(TASK_THREAD_F8,  task_struct, thread.fstate.f[8]);
  49         OFFSET(TASK_THREAD_F9,  task_struct, thread.fstate.f[9]);
  50         OFFSET(TASK_THREAD_F10, task_struct, thread.fstate.f[10]);
  51         OFFSET(TASK_THREAD_F11, task_struct, thread.fstate.f[11]);
  52         OFFSET(TASK_THREAD_F12, task_struct, thread.fstate.f[12]);
  53         OFFSET(TASK_THREAD_F13, task_struct, thread.fstate.f[13]);
  54         OFFSET(TASK_THREAD_F14, task_struct, thread.fstate.f[14]);
  55         OFFSET(TASK_THREAD_F15, task_struct, thread.fstate.f[15]);
  56         OFFSET(TASK_THREAD_F16, task_struct, thread.fstate.f[16]);
  57         OFFSET(TASK_THREAD_F17, task_struct, thread.fstate.f[17]);
  58         OFFSET(TASK_THREAD_F18, task_struct, thread.fstate.f[18]);
  59         OFFSET(TASK_THREAD_F19, task_struct, thread.fstate.f[19]);
  60         OFFSET(TASK_THREAD_F20, task_struct, thread.fstate.f[20]);
  61         OFFSET(TASK_THREAD_F21, task_struct, thread.fstate.f[21]);
  62         OFFSET(TASK_THREAD_F22, task_struct, thread.fstate.f[22]);
  63         OFFSET(TASK_THREAD_F23, task_struct, thread.fstate.f[23]);
  64         OFFSET(TASK_THREAD_F24, task_struct, thread.fstate.f[24]);
  65         OFFSET(TASK_THREAD_F25, task_struct, thread.fstate.f[25]);
  66         OFFSET(TASK_THREAD_F26, task_struct, thread.fstate.f[26]);
  67         OFFSET(TASK_THREAD_F27, task_struct, thread.fstate.f[27]);
  68         OFFSET(TASK_THREAD_F28, task_struct, thread.fstate.f[28]);
  69         OFFSET(TASK_THREAD_F29, task_struct, thread.fstate.f[29]);
  70         OFFSET(TASK_THREAD_F30, task_struct, thread.fstate.f[30]);
  71         OFFSET(TASK_THREAD_F31, task_struct, thread.fstate.f[31]);
  72         OFFSET(TASK_THREAD_FCSR, task_struct, thread.fstate.fcsr);
  73 #ifdef CONFIG_STACKPROTECTOR
  74         OFFSET(TSK_STACK_CANARY, task_struct, stack_canary);
  75 #endif
  76
  77         DEFINE(PT_SIZE, sizeof(struct pt_regs));
  78         OFFSET(PT_EPC, pt_regs, epc);
  79         OFFSET(PT_RA, pt_regs, ra);
  80         OFFSET(PT_FP, pt_regs, s0);
  81         OFFSET(PT_S0, pt_regs, s0);
  82         OFFSET(PT_S1, pt_regs, s1);
  83         OFFSET(PT_S2, pt_regs, s2);
  84         OFFSET(PT_S3, pt_regs, s3);
  85         OFFSET(PT_S4, pt_regs, s4);
  86         OFFSET(PT_S5, pt_regs, s5);
  87         OFFSET(PT_S6, pt_regs, s6);
  88         OFFSET(PT_S7, pt_regs, s7);
  89         OFFSET(PT_S8, pt_regs, s8);
  90         OFFSET(PT_S9, pt_regs, s9);
  91         OFFSET(PT_S10, pt_regs, s10);
  92         OFFSET(PT_S11, pt_regs, s11);
  93         OFFSET(PT_SP, pt_regs, sp);
  94         OFFSET(PT_TP, pt_regs, tp);
  95         OFFSET(PT_A0, pt_regs, a0);
  96         OFFSET(PT_A1, pt_regs, a1);
  97         OFFSET(PT_A2, pt_regs, a2);
  98         OFFSET(PT_A3, pt_regs, a3);
  99         OFFSET(PT_A4, pt_regs, a4);
 100         OFFSET(PT_A5, pt_regs, a5);
 101         OFFSET(PT_A6, pt_regs, a6);
 102         OFFSET(PT_A7, pt_regs, a7);
 103         OFFSET(PT_T0, pt_regs, t0);
 104         OFFSET(PT_T1, pt_regs, t1);
 105         OFFSET(PT_T2, pt_regs, t2);
 106         OFFSET(PT_T3, pt_regs, t3);
 107         OFFSET(PT_T4, pt_regs, t4);
 108         OFFSET(PT_T5, pt_regs, t5);
 109         OFFSET(PT_T6, pt_regs, t6);
 110         OFFSET(PT_GP, pt_regs, gp);
 111         OFFSET(PT_ORIG_A0, pt_regs, orig_a0);
 112         OFFSET(PT_STATUS, pt_regs, status);
 113         OFFSET(PT_BADADDR, pt_regs, badaddr);
 114         OFFSET(PT_CAUSE, pt_regs, cause);
 115
 116         OFFSET(SUSPEND_CONTEXT_REGS, suspend_context, regs);
 117
 118         /*
 119          * THREAD_{F,X}* might be larger than a S-type offset can handle, but
 120          * these are used in performance-sensitive assembly so we can't resort
 121          * to loading the long immediate every time.
 122          */
 123         DEFINE(TASK_THREAD_RA_RA,
 124                   offsetof(struct task_struct, thread.ra)
 125                 - offsetof(struct task_struct, thread.ra)
 126         );
 127         DEFINE(TASK_THREAD_SP_RA,
 128                   offsetof(struct task_struct, thread.sp)
 129                 - offsetof(struct task_struct, thread.ra)
 130         );
 131         DEFINE(TASK_THREAD_S0_RA,
 132                   offsetof(struct task_struct, thread.s[0])
 133                 - offsetof(struct task_struct, thread.ra)
 134         );
 135         DEFINE(TASK_THREAD_S1_RA,
 136                   offsetof(struct task_struct, thread.s[1])
 137                 - offsetof(struct task_struct, thread.ra)
 138         );
 139         DEFINE(TASK_THREAD_S2_RA,
 140                   offsetof(struct task_struct, thread.s[2])
 141                 - offsetof(struct task_struct, thread.ra)
 142         );
 143         DEFINE(TASK_THREAD_S3_RA,
 144                   offsetof(struct task_struct, thread.s[3])
 145                 - offsetof(struct task_struct, thread.ra)
 146         );
 147         DEFINE(TASK_THREAD_S4_RA,
 148                   offsetof(struct task_struct, thread.s[4])
 149                 - offsetof(struct task_struct, thread.ra)
 150         );
 151         DEFINE(TASK_THREAD_S5_RA,
 152                   offsetof(struct task_struct, thread.s[5])
 153                 - offsetof(struct task_struct, thread.ra)
 154         );
 155         DEFINE(TASK_THREAD_S6_RA,
 156                   offsetof(struct task_struct, thread.s[6])
 157                 - offsetof(struct task_struct, thread.ra)
 158         );
 159         DEFINE(TASK_THREAD_S7_RA,
 160                   offsetof(struct task_struct, thread.s[7])
 161                 - offsetof(struct task_struct, thread.ra)
 162         );
 163         DEFINE(TASK_THREAD_S8_RA,
 164                   offsetof(struct task_struct, thread.s[8])
 165                 - offsetof(struct task_struct, thread.ra)
 166         );
 167         DEFINE(TASK_THREAD_S9_RA,
 168                   offsetof(struct task_struct, thread.s[9])
 169                 - offsetof(struct task_struct, thread.ra)
 170         );
 171         DEFINE(TASK_THREAD_S10_RA,
 172                   offsetof(struct task_struct, thread.s[10])
 173                 - offsetof(struct task_struct, thread.ra)
 174         );
 175         DEFINE(TASK_THREAD_S11_RA,
 176                   offsetof(struct task_struct, thread.s[11])
 177                 - offsetof(struct task_struct, thread.ra)
 178         );
 179
 180         DEFINE(TASK_THREAD_F0_F0,
 181                   offsetof(struct task_struct, thread.fstate.f[0])
 182                 - offsetof(struct task_struct, thread.fstate.f[0])
 183         );
 184         DEFINE(TASK_THREAD_F1_F0,
 185                   offsetof(struct task_struct, thread.fstate.f[1])
 186                 - offsetof(struct task_struct, thread.fstate.f[0])
 187         );
 188         DEFINE(TASK_THREAD_F2_F0,
 189                   offsetof(struct task_struct, thread.fstate.f[2])
 190                 - offsetof(struct task_struct, thread.fstate.f[0])
 191         );
 192         DEFINE(TASK_THREAD_F3_F0,
 193                   offsetof(struct task_struct, thread.fstate.f[3])
 194                 - offsetof(struct task_struct, thread.fstate.f[0])
 195         );
 196         DEFINE(TASK_THREAD_F4_F0,
 197                   offsetof(struct task_struct, thread.fstate.f[4])
 198                 - offsetof(struct task_struct, thread.fstate.f[0])
 199         );
 200         DEFINE(TASK_THREAD_F5_F0,
 201                   offsetof(struct task_struct, thread.fstate.f[5])
 202                 - offsetof(struct task_struct, thread.fstate.f[0])
 203         );
 204         DEFINE(TASK_THREAD_F6_F0,
 205                   offsetof(struct task_struct, thread.fstate.f[6])
 206                 - offsetof(struct task_struct, thread.fstate.f[0])
 207         );
 208         DEFINE(TASK_THREAD_F7_F0,
 209                   offsetof(struct task_struct, thread.fstate.f[7])
 210                 - offsetof(struct task_struct, thread.fstate.f[0])
 211         );
 212         DEFINE(TASK_THREAD_F8_F0,
 213                   offsetof(struct task_struct, thread.fstate.f[8])
 214                 - offsetof(struct task_struct, thread.fstate.f[0])
 215         );
 216         DEFINE(TASK_THREAD_F9_F0,
 217                   offsetof(struct task_struct, thread.fstate.f[9])
 218                 - offsetof(struct task_struct, thread.fstate.f[0])
 219         );
 220         DEFINE(TASK_THREAD_F10_F0,
 221                   offsetof(struct task_struct, thread.fstate.f[10])
 222                 - offsetof(struct task_struct, thread.fstate.f[0])
 223         );
 224         DEFINE(TASK_THREAD_F11_F0,
 225                   offsetof(struct task_struct, thread.fstate.f[11])
 226                 - offsetof(struct task_struct, thread.fstate.f[0])
 227         );
 228         DEFINE(TASK_THREAD_F12_F0,
 229                   offsetof(struct task_struct, thread.fstate.f[12])
 230                 - offsetof(struct task_struct, thread.fstate.f[0])
 231         );
 232         DEFINE(TASK_THREAD_F13_F0,
 233                   offsetof(struct task_struct, thread.fstate.f[13])
 234                 - offsetof(struct task_struct, thread.fstate.f[0])
 235         );
 236         DEFINE(TASK_THREAD_F14_F0,
 237                   offsetof(struct task_struct, thread.fstate.f[14])
 238                 - offsetof(struct task_struct, thread.fstate.f[0])
 239         );
 240         DEFINE(TASK_THREAD_F15_F0,
 241                   offsetof(struct task_struct, thread.fstate.f[15])
 242                 - offsetof(struct task_struct, thread.fstate.f[0])
 243         );
 244         DEFINE(TASK_THREAD_F16_F0,
 245                   offsetof(struct task_struct, thread.fstate.f[16])
 246                 - offsetof(struct task_struct, thread.fstate.f[0])
 247         );
 248         DEFINE(TASK_THREAD_F17_F0,
 249                   offsetof(struct task_struct, thread.fstate.f[17])
 250                 - offsetof(struct task_struct, thread.fstate.f[0])
 251         );
 252         DEFINE(TASK_THREAD_F18_F0,
 253                   offsetof(struct task_struct, thread.fstate.f[18])
 254                 - offsetof(struct task_struct, thread.fstate.f[0])
 255         );
 256         DEFINE(TASK_THREAD_F19_F0,
 257                   offsetof(struct task_struct, thread.fstate.f[19])
 258                 - offsetof(struct task_struct, thread.fstate.f[0])
 259         );
 260         DEFINE(TASK_THREAD_F20_F0,
 261                   offsetof(struct task_struct, thread.fstate.f[20])
 262                 - offsetof(struct task_struct, thread.fstate.f[0])
 263         );
 264         DEFINE(TASK_THREAD_F21_F0,
 265                   offsetof(struct task_struct, thread.fstate.f[21])
 266                 - offsetof(struct task_struct, thread.fstate.f[0])
 267         );
 268         DEFINE(TASK_THREAD_F22_F0,
 269                   offsetof(struct task_struct, thread.fstate.f[22])
 270                 - offsetof(struct task_struct, thread.fstate.f[0])
 271         );
 272         DEFINE(TASK_THREAD_F23_F0,
 273                   offsetof(struct task_struct, thread.fstate.f[23])
 274                 - offsetof(struct task_struct, thread.fstate.f[0])
 275         );
 276         DEFINE(TASK_THREAD_F24_F0,
 277                   offsetof(struct task_struct, thread.fstate.f[24])
 278                 - offsetof(struct task_struct, thread.fstate.f[0])
 279         );
 280         DEFINE(TASK_THREAD_F25_F0,
 281                   offsetof(struct task_struct, thread.fstate.f[25])
 282                 - offsetof(struct task_struct, thread.fstate.f[0])
 283         );
 284         DEFINE(TASK_THREAD_F26_F0,
 285                   offsetof(struct task_struct, thread.fstate.f[26])
 286                 - offsetof(struct task_struct, thread.fstate.f[0])
 287         );
 288         DEFINE(TASK_THREAD_F27_F0,
 289                   offsetof(struct task_struct, thread.fstate.f[27])
 290                 - offsetof(struct task_struct, thread.fstate.f[0])
 291         );
 292         DEFINE(TASK_THREAD_F28_F0,
 293                   offsetof(struct task_struct, thread.fstate.f[28])
 294                 - offsetof(struct task_struct, thread.fstate.f[0])
 295         );
 296         DEFINE(TASK_THREAD_F29_F0,
 297                   offsetof(struct task_struct, thread.fstate.f[29])
 298                 - offsetof(struct task_struct, thread.fstate.f[0])
 299         );
 300         DEFINE(TASK_THREAD_F30_F0,
 301                   offsetof(struct task_struct, thread.fstate.f[30])
 302                 - offsetof(struct task_struct, thread.fstate.f[0])
 303         );
 304         DEFINE(TASK_THREAD_F31_F0,
 305                   offsetof(struct task_struct, thread.fstate.f[31])
 306                 - offsetof(struct task_struct, thread.fstate.f[0])
 307         );
 308         DEFINE(TASK_THREAD_FCSR_F0,
 309                   offsetof(struct task_struct, thread.fstate.fcsr)
 310                 - offsetof(struct task_struct, thread.fstate.f[0])
 311         );
 312
 313         /*
 314          * We allocate a pt_regs on the stack when entering the kernel.  This
 315          * ensures the alignment is sane.
 316          */
 317         DEFINE(PT_SIZE_ON_STACK, ALIGN(sizeof(struct pt_regs), STACK_ALIGN));
 318
 319         OFFSET(KERNEL_MAP_VIRT_ADDR, kernel_mapping, virt_addr);
 320         OFFSET(SBI_HART_BOOT_TASK_PTR_OFFSET, sbi_hart_boot_data, task_ptr);
 321         OFFSET(SBI_HART_BOOT_STACK_PTR_OFFSET, sbi_hart_boot_data, stack_ptr);
 322 }