arch/riscv/kernel/asm-offsets.c

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