arch/powerpc/kernel/asm-offsets.c

   1 /*
   2  * This program is used to generate definitions needed by
   3  * assembly language modules.
   4  *
   5  * We use the technique used in the OSF Mach kernel code:
   6  * generate asm statements containing #defines,
   7  * compile this file to assembler, and then extract the
   8  * #defines from the assembly-language output.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version
  13  * 2 of the License, or (at your option) any later version.
  14  */
  15
  16 #include <linux/signal.h>
  17 #include <linux/sched.h>
  18 #include <linux/kernel.h>
  19 #include <linux/errno.h>
  20 #include <linux/string.h>
  21 #include <linux/types.h>
  22 #include <linux/mman.h>
  23 #include <linux/mm.h>
  24 #include <linux/suspend.h>
  25 #ifdef CONFIG_PPC64
  26 #include <linux/time.h>
  27 #include <linux/hardirq.h>
  28 #else
  29 #include <linux/ptrace.h>
  30 #endif
  31
  32 #include <asm/io.h>
  33 #include <asm/page.h>
  34 #include <asm/pgtable.h>
  35 #include <asm/processor.h>
  36 #include <asm/cputable.h>
  37 #include <asm/thread_info.h>
  38 #include <asm/rtas.h>
  39 #include <asm/vdso_datapage.h>
  40 #ifdef CONFIG_PPC64
  41 #include <asm/paca.h>
  42 #include <asm/lppaca.h>
  43 #include <asm/cache.h>
  44 #include <asm/compat.h>
  45 #include <asm/mmu.h>
  46 #include <asm/hvcall.h>
  47 #endif
  48
  49 #define DEFINE(sym, val) \
  50         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  51
  52 #define BLANK() asm volatile("\n->" : : )
  53
  54 int main(void)
  55 {
  56         DEFINE(THREAD, offsetof(struct task_struct, thread));
  57         DEFINE(MM, offsetof(struct task_struct, mm));
  58 #ifdef CONFIG_PPC64
  59         DEFINE(AUDITCONTEXT, offsetof(struct task_struct, audit_context));
  60 #else
  61         DEFINE(THREAD_INFO, offsetof(struct task_struct, stack));
  62         DEFINE(PTRACE, offsetof(struct task_struct, ptrace));
  63 #endif /* CONFIG_PPC64 */
  64
  65         DEFINE(KSP, offsetof(struct thread_struct, ksp));
  66         DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
  67         DEFINE(THREAD_FPEXC_MODE, offsetof(struct thread_struct, fpexc_mode));
  68         DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
  69         DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
  70 #ifdef CONFIG_ALTIVEC
  71         DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
  72         DEFINE(THREAD_VRSAVE, offsetof(struct thread_struct, vrsave));
  73         DEFINE(THREAD_VSCR, offsetof(struct thread_struct, vscr));
  74         DEFINE(THREAD_USED_VR, offsetof(struct thread_struct, used_vr));
  75 #endif /* CONFIG_ALTIVEC */
  76 #ifdef CONFIG_PPC64
  77         DEFINE(KSP_VSID, offsetof(struct thread_struct, ksp_vsid));
  78 #else /* CONFIG_PPC64 */
  79         DEFINE(PGDIR, offsetof(struct thread_struct, pgdir));
  80 #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
  81         DEFINE(THREAD_DBCR0, offsetof(struct thread_struct, dbcr0));
  82         DEFINE(PT_PTRACED, PT_PTRACED);
  83 #endif
  84 #ifdef CONFIG_SPE
  85         DEFINE(THREAD_EVR0, offsetof(struct thread_struct, evr[0]));
  86         DEFINE(THREAD_ACC, offsetof(struct thread_struct, acc));
  87         DEFINE(THREAD_SPEFSCR, offsetof(struct thread_struct, spefscr));
  88         DEFINE(THREAD_USED_SPE, offsetof(struct thread_struct, used_spe));
  89 #endif /* CONFIG_SPE */
  90 #endif /* CONFIG_PPC64 */
  91
  92         DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
  93         DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));
  94         DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
  95         DEFINE(TI_TASK, offsetof(struct thread_info, task));
  96 #ifdef CONFIG_PPC32
  97         DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
  98         DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
  99 #endif /* CONFIG_PPC32 */
 100
 101 #ifdef CONFIG_PPC64
 102         DEFINE(DCACHEL1LINESIZE, offsetof(struct ppc64_caches, dline_size));
 103         DEFINE(DCACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_dline_size));
 104         DEFINE(DCACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, dlines_per_page));
 105         DEFINE(ICACHEL1LINESIZE, offsetof(struct ppc64_caches, iline_size));
 106         DEFINE(ICACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_iline_size));
 107         DEFINE(ICACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, ilines_per_page));
 108         /* paca */
 109         DEFINE(PACA_SIZE, sizeof(struct paca_struct));
 110         DEFINE(PACAPACAINDEX, offsetof(struct paca_struct, paca_index));
 111         DEFINE(PACAPROCSTART, offsetof(struct paca_struct, cpu_start));
 112         DEFINE(PACAKSAVE, offsetof(struct paca_struct, kstack));
 113         DEFINE(PACACURRENT, offsetof(struct paca_struct, __current));
 114         DEFINE(PACASAVEDMSR, offsetof(struct paca_struct, saved_msr));
 115         DEFINE(PACASTABREAL, offsetof(struct paca_struct, stab_real));
 116         DEFINE(PACASTABVIRT, offsetof(struct paca_struct, stab_addr));
 117         DEFINE(PACASTABRR, offsetof(struct paca_struct, stab_rr));
 118         DEFINE(PACAR1, offsetof(struct paca_struct, saved_r1));
 119         DEFINE(PACATOC, offsetof(struct paca_struct, kernel_toc));
 120         DEFINE(PACASOFTIRQEN, offsetof(struct paca_struct, soft_enabled));
 121         DEFINE(PACAHARDIRQEN, offsetof(struct paca_struct, hard_enabled));
 122         DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
 123         DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
 124         DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id));
 125         DEFINE(PACAVMALLOCSLLP, offsetof(struct paca_struct, vmalloc_sllp));
 126 #ifdef CONFIG_PPC_MM_SLICES
 127         DEFINE(PACALOWSLICESPSIZE, offsetof(struct paca_struct,
 128                                             context.low_slices_psize));
 129         DEFINE(PACAHIGHSLICEPSIZE, offsetof(struct paca_struct,
 130                                             context.high_slices_psize));
 131         DEFINE(MMUPSIZEDEFSIZE, sizeof(struct mmu_psize_def));
 132         DEFINE(MMUPSIZESLLP, offsetof(struct mmu_psize_def, sllp));
 133 #else
 134         DEFINE(PACACONTEXTSLLP, offsetof(struct paca_struct, context.sllp));
 135
 136 #endif /* CONFIG_PPC_MM_SLICES */
 137         DEFINE(PACA_EXGEN, offsetof(struct paca_struct, exgen));
 138         DEFINE(PACA_EXMC, offsetof(struct paca_struct, exmc));
 139         DEFINE(PACA_EXSLB, offsetof(struct paca_struct, exslb));
 140         DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
 141         DEFINE(PACALPPACAPTR, offsetof(struct paca_struct, lppaca_ptr));
 142         DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
 143         DEFINE(PACA_STARTPURR, offsetof(struct paca_struct, startpurr));
 144         DEFINE(PACA_STARTSPURR, offsetof(struct paca_struct, startspurr));
 145         DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time));
 146         DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
 147         DEFINE(PACA_SLBSHADOWPTR, offsetof(struct paca_struct, slb_shadow_ptr));
 148         DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset));
 149         DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));
 150
 151         DEFINE(SLBSHADOW_STACKVSID,
 152                offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].vsid));
 153         DEFINE(SLBSHADOW_STACKESID,
 154                offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].esid));
 155         DEFINE(LPPACASRR0, offsetof(struct lppaca, saved_srr0));
 156         DEFINE(LPPACASRR1, offsetof(struct lppaca, saved_srr1));
 157         DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int));
 158         DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int));
 159         DEFINE(SLBSHADOW_SAVEAREA, offsetof(struct slb_shadow, save_area));
 160 #endif /* CONFIG_PPC64 */
 161
 162         /* RTAS */
 163         DEFINE(RTASBASE, offsetof(struct rtas_t, base));
 164         DEFINE(RTASENTRY, offsetof(struct rtas_t, entry));
 165
 166         /* Interrupt register frame */
 167         DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
 168 #ifndef CONFIG_PPC64
 169         DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
 170 #else /* CONFIG_PPC64 */
 171         DEFINE(SWITCH_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
 172         /* 288 = # of volatile regs, int & fp, for leaf routines */
 173         /* which do not stack a frame.  See the PPC64 ABI.       */
 174         DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 288);
 175         /* Create extra stack space for SRR0 and SRR1 when calling prom/rtas. */
 176         DEFINE(PROM_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
 177         DEFINE(RTAS_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
 178
 179         /* hcall statistics */
 180         DEFINE(HCALL_STAT_SIZE, sizeof(struct hcall_stats));
 181         DEFINE(HCALL_STAT_CALLS, offsetof(struct hcall_stats, num_calls));
 182         DEFINE(HCALL_STAT_TB, offsetof(struct hcall_stats, tb_total));
 183         DEFINE(HCALL_STAT_PURR, offsetof(struct hcall_stats, purr_total));
 184 #endif /* CONFIG_PPC64 */
 185         DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
 186         DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
 187         DEFINE(GPR2, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[2]));
 188         DEFINE(GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[3]));
 189         DEFINE(GPR4, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[4]));
 190         DEFINE(GPR5, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[5]));
 191         DEFINE(GPR6, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[6]));
 192         DEFINE(GPR7, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[7]));
 193         DEFINE(GPR8, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[8]));
 194         DEFINE(GPR9, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[9]));
 195         DEFINE(GPR10, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[10]));
 196         DEFINE(GPR11, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[11]));
 197         DEFINE(GPR12, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[12]));
 198         DEFINE(GPR13, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[13]));
 199 #ifndef CONFIG_PPC64
 200         DEFINE(GPR14, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[14]));
 201         DEFINE(GPR15, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[15]));
 202         DEFINE(GPR16, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[16]));
 203         DEFINE(GPR17, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[17]));
 204         DEFINE(GPR18, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[18]));
 205         DEFINE(GPR19, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[19]));
 206         DEFINE(GPR20, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[20]));
 207         DEFINE(GPR21, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[21]));
 208         DEFINE(GPR22, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[22]));
 209         DEFINE(GPR23, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[23]));
 210         DEFINE(GPR24, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[24]));
 211         DEFINE(GPR25, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[25]));
 212         DEFINE(GPR26, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[26]));
 213         DEFINE(GPR27, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[27]));
 214         DEFINE(GPR28, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[28]));
 215         DEFINE(GPR29, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[29]));
 216         DEFINE(GPR30, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[30]));
 217         DEFINE(GPR31, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[31]));
 218 #endif /* CONFIG_PPC64 */
 219         /*
 220          * Note: these symbols include _ because they overlap with special
 221          * register names
 222          */
 223         DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
 224         DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
 225         DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
 226         DEFINE(_LINK, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, link));
 227         DEFINE(_CCR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ccr));
 228         DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
 229         DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
 230         DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
 231         DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
 232         DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
 233         DEFINE(_TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
 234 #ifndef CONFIG_PPC64
 235         DEFINE(_MQ, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, mq));
 236         /*
 237          * The PowerPC 400-class & Book-E processors have neither the DAR
 238          * nor the DSISR SPRs. Hence, we overload them to hold the similar
 239          * DEAR and ESR SPRs for such processors.  For critical interrupts
 240          * we use them to hold SRR0 and SRR1.
 241          */
 242         DEFINE(_DEAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
 243         DEFINE(_ESR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
 244 #else /* CONFIG_PPC64 */
 245         DEFINE(SOFTE, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, softe));
 246
 247         /* These _only_ to be used with {PROM,RTAS}_FRAME_SIZE!!! */
 248         DEFINE(_SRR0, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs));
 249         DEFINE(_SRR1, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs)+8);
 250 #endif /* CONFIG_PPC64 */
 251
 252         DEFINE(CLONE_VM, CLONE_VM);
 253         DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
 254
 255 #ifndef CONFIG_PPC64
 256         DEFINE(MM_PGD, offsetof(struct mm_struct, pgd));
 257 #endif /* ! CONFIG_PPC64 */
 258
 259         /* About the CPU features table */
 260         DEFINE(CPU_SPEC_ENTRY_SIZE, sizeof(struct cpu_spec));
 261         DEFINE(CPU_SPEC_PVR_MASK, offsetof(struct cpu_spec, pvr_mask));
 262         DEFINE(CPU_SPEC_PVR_VALUE, offsetof(struct cpu_spec, pvr_value));
 263         DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
 264         DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
 265         DEFINE(CPU_SPEC_RESTORE, offsetof(struct cpu_spec, cpu_restore));
 266
 267         DEFINE(pbe_address, offsetof(struct pbe, address));
 268         DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
 269         DEFINE(pbe_next, offsetof(struct pbe, next));
 270
 271 #ifndef CONFIG_PPC64
 272         DEFINE(TASK_SIZE, TASK_SIZE);
 273         DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28);
 274 #endif /* ! CONFIG_PPC64 */
 275
 276         /* datapage offsets for use by vdso */
 277         DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct vdso_data, tb_orig_stamp));
 278         DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct vdso_data, tb_ticks_per_sec));
 279         DEFINE(CFG_TB_TO_XS, offsetof(struct vdso_data, tb_to_xs));
 280         DEFINE(CFG_STAMP_XSEC, offsetof(struct vdso_data, stamp_xsec));
 281         DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct vdso_data, tb_update_count));
 282         DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct vdso_data, tz_minuteswest));
 283         DEFINE(CFG_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime));
 284         DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32));
 285         DEFINE(WTOM_CLOCK_SEC, offsetof(struct vdso_data, wtom_clock_sec));
 286         DEFINE(WTOM_CLOCK_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
 287 #ifdef CONFIG_PPC64
 288         DEFINE(CFG_SYSCALL_MAP64, offsetof(struct vdso_data, syscall_map_64));
 289         DEFINE(TVAL64_TV_SEC, offsetof(struct timeval, tv_sec));
 290         DEFINE(TVAL64_TV_USEC, offsetof(struct timeval, tv_usec));
 291         DEFINE(TVAL32_TV_SEC, offsetof(struct compat_timeval, tv_sec));
 292         DEFINE(TVAL32_TV_USEC, offsetof(struct compat_timeval, tv_usec));
 293         DEFINE(TSPC64_TV_SEC, offsetof(struct timespec, tv_sec));
 294         DEFINE(TSPC64_TV_NSEC, offsetof(struct timespec, tv_nsec));
 295         DEFINE(TSPC32_TV_SEC, offsetof(struct compat_timespec, tv_sec));
 296         DEFINE(TSPC32_TV_NSEC, offsetof(struct compat_timespec, tv_nsec));
 297 #else
 298         DEFINE(TVAL32_TV_SEC, offsetof(struct timeval, tv_sec));
 299         DEFINE(TVAL32_TV_USEC, offsetof(struct timeval, tv_usec));
 300         DEFINE(TSPC32_TV_SEC, offsetof(struct timespec, tv_sec));
 301         DEFINE(TSPC32_TV_NSEC, offsetof(struct timespec, tv_nsec));
 302 #endif
 303         /* timeval/timezone offsets for use by vdso */
 304         DEFINE(TZONE_TZ_MINWEST, offsetof(struct timezone, tz_minuteswest));
 305         DEFINE(TZONE_TZ_DSTTIME, offsetof(struct timezone, tz_dsttime));
 306
 307         /* Other bits used by the vdso */
 308         DEFINE(CLOCK_REALTIME, CLOCK_REALTIME);
 309         DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC);
 310         DEFINE(NSEC_PER_SEC, NSEC_PER_SEC);
 311         DEFINE(CLOCK_REALTIME_RES, TICK_NSEC);
 312
 313 #ifdef CONFIG_BUG
 314         DEFINE(BUG_ENTRY_SIZE, sizeof(struct bug_entry));
 315 #endif
 316
 317 #ifdef CONFIG_PPC_ISERIES
 318         /* the assembler miscalculates the VSID values */
 319         DEFINE(PAGE_OFFSET_ESID, GET_ESID(PAGE_OFFSET));
 320         DEFINE(PAGE_OFFSET_VSID, KERNEL_VSID(PAGE_OFFSET));
 321         DEFINE(VMALLOC_START_ESID, GET_ESID(VMALLOC_START));
 322         DEFINE(VMALLOC_START_VSID, KERNEL_VSID(VMALLOC_START));
 323 #endif
 324
 325 #ifdef CONFIG_PPC64
 326         DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);
 327 #endif
 328         return 0;
 329 }