arch/ppc64/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/config.h>
  17 #include <linux/signal.h>
  18 #include <linux/sched.h>
  19 #include <linux/kernel.h>
  20 #include <linux/errno.h>
  21 #include <linux/string.h>
  22 #include <linux/types.h>
  23 #include <linux/mman.h>
  24 #include <linux/mm.h>
  25 #include <linux/time.h>
  26 #include <linux/hardirq.h>
  27 #include <asm/io.h>
  28 #include <asm/page.h>
  29 #include <asm/pgtable.h>
  30 #include <asm/processor.h>
  31
  32 #include <asm/paca.h>
  33 #include <asm/lppaca.h>
  34 #include <asm/iSeries/HvLpEvent.h>
  35 #include <asm/rtas.h>
  36 #include <asm/cputable.h>
  37 #include <asm/cache.h>
  38 #include <asm/systemcfg.h>
  39 #include <asm/compat.h>
  40
  41 #define DEFINE(sym, val) \
  42         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  43
  44 #define BLANK() asm volatile("\n->" : : )
  45
  46 int main(void)
  47 {
  48         /* thread struct on stack */
  49         DEFINE(THREAD_SHIFT, THREAD_SHIFT);
  50         DEFINE(THREAD_SIZE, THREAD_SIZE);
  51         DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
  52         DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
  53         DEFINE(TI_SC_NOERR, offsetof(struct thread_info, syscall_noerror));
  54
  55         /* task_struct->thread */
  56         DEFINE(THREAD, offsetof(struct task_struct, thread));
  57         DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
  58         DEFINE(THREAD_FPEXC_MODE, offsetof(struct thread_struct, fpexc_mode));
  59         DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
  60         DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
  61         DEFINE(KSP, offsetof(struct thread_struct, ksp));
  62         DEFINE(KSP_VSID, offsetof(struct thread_struct, ksp_vsid));
  63
  64 #ifdef CONFIG_ALTIVEC
  65         DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
  66         DEFINE(THREAD_VRSAVE, offsetof(struct thread_struct, vrsave));
  67         DEFINE(THREAD_VSCR, offsetof(struct thread_struct, vscr));
  68         DEFINE(THREAD_USED_VR, offsetof(struct thread_struct, used_vr));
  69 #endif /* CONFIG_ALTIVEC */
  70         DEFINE(MM, offsetof(struct task_struct, mm));
  71
  72         DEFINE(DCACHEL1LINESIZE, offsetof(struct ppc64_caches, dline_size));
  73         DEFINE(DCACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_dline_size));
  74         DEFINE(DCACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, dlines_per_page));
  75         DEFINE(ICACHEL1LINESIZE, offsetof(struct ppc64_caches, iline_size));
  76         DEFINE(ICACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_iline_size));
  77         DEFINE(ICACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, ilines_per_page));
  78         DEFINE(PLATFORM, offsetof(struct systemcfg, platform));
  79
  80         /* paca */
  81         DEFINE(PACA_SIZE, sizeof(struct paca_struct));
  82         DEFINE(PACAPACAINDEX, offsetof(struct paca_struct, paca_index));
  83         DEFINE(PACAPROCSTART, offsetof(struct paca_struct, cpu_start));
  84         DEFINE(PACAKSAVE, offsetof(struct paca_struct, kstack));
  85         DEFINE(PACACURRENT, offsetof(struct paca_struct, __current));
  86         DEFINE(PACASAVEDMSR, offsetof(struct paca_struct, saved_msr));
  87         DEFINE(PACASTABREAL, offsetof(struct paca_struct, stab_real));
  88         DEFINE(PACASTABVIRT, offsetof(struct paca_struct, stab_addr));
  89         DEFINE(PACASTABRR, offsetof(struct paca_struct, stab_rr));
  90         DEFINE(PACAR1, offsetof(struct paca_struct, saved_r1));
  91         DEFINE(PACATOC, offsetof(struct paca_struct, kernel_toc));
  92         DEFINE(PACAPROCENABLED, offsetof(struct paca_struct, proc_enabled));
  93         DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
  94         DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
  95         DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id));
  96 #ifdef CONFIG_HUGETLB_PAGE
  97         DEFINE(PACAHTLBSEGS, offsetof(struct paca_struct, context.htlb_segs));
  98 #endif /* CONFIG_HUGETLB_PAGE */
  99         DEFINE(PACADEFAULTDECR, offsetof(struct paca_struct, default_decr));
 100         DEFINE(PACA_EXGEN, offsetof(struct paca_struct, exgen));
 101         DEFINE(PACA_EXMC, offsetof(struct paca_struct, exmc));
 102         DEFINE(PACA_EXSLB, offsetof(struct paca_struct, exslb));
 103         DEFINE(PACA_EXDSI, offsetof(struct paca_struct, exdsi));
 104         DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
 105         DEFINE(PACALPPACA, offsetof(struct paca_struct, lppaca));
 106         DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
 107         DEFINE(LPPACASRR0, offsetof(struct lppaca, saved_srr0));
 108         DEFINE(LPPACASRR1, offsetof(struct lppaca, saved_srr1));
 109         DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int));
 110         DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int));
 111
 112         /* RTAS */
 113         DEFINE(RTASBASE, offsetof(struct rtas_t, base));
 114         DEFINE(RTASENTRY, offsetof(struct rtas_t, entry));
 115
 116         /* Interrupt register frame */
 117         DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
 118
 119         DEFINE(SWITCH_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
 120
 121         /* 288 = # of volatile regs, int & fp, for leaf routines */
 122         /* which do not stack a frame.  See the PPC64 ABI.       */
 123         DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 288);
 124         /* Create extra stack space for SRR0 and SRR1 when calling prom/rtas. */
 125         DEFINE(PROM_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
 126         DEFINE(RTAS_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
 127         DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
 128         DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
 129         DEFINE(GPR2, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[2]));
 130         DEFINE(GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[3]));
 131         DEFINE(GPR4, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[4]));
 132         DEFINE(GPR5, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[5]));
 133         DEFINE(GPR6, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[6]));
 134         DEFINE(GPR7, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[7]));
 135         DEFINE(GPR8, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[8]));
 136         DEFINE(GPR9, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[9]));
 137         DEFINE(GPR10, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[10]));
 138         DEFINE(GPR11, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[11]));
 139         DEFINE(GPR12, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[12]));
 140         DEFINE(GPR13, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[13]));
 141         /*
 142          * Note: these symbols include _ because they overlap with special
 143          * register names
 144          */
 145         DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
 146         DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
 147         DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
 148         DEFINE(_LINK, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, link));
 149         DEFINE(_CCR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ccr));
 150         DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
 151         DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
 152         DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
 153         DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
 154         DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
 155         DEFINE(_TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
 156         DEFINE(SOFTE, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, softe));
 157
 158         /* These _only_ to be used with {PROM,RTAS}_FRAME_SIZE!!! */
 159         DEFINE(_SRR0, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs));
 160         DEFINE(_SRR1, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs)+8);
 161
 162         DEFINE(CLONE_VM, CLONE_VM);
 163         DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
 164
 165         /* About the CPU features table */
 166         DEFINE(CPU_SPEC_ENTRY_SIZE, sizeof(struct cpu_spec));
 167         DEFINE(CPU_SPEC_PVR_MASK, offsetof(struct cpu_spec, pvr_mask));
 168         DEFINE(CPU_SPEC_PVR_VALUE, offsetof(struct cpu_spec, pvr_value));
 169         DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
 170         DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
 171
 172         /* systemcfg offsets for use by vdso */
 173         DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct systemcfg, tb_orig_stamp));
 174         DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct systemcfg, tb_ticks_per_sec));
 175         DEFINE(CFG_TB_TO_XS, offsetof(struct systemcfg, tb_to_xs));
 176         DEFINE(CFG_STAMP_XSEC, offsetof(struct systemcfg, stamp_xsec));
 177         DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct systemcfg, tb_update_count));
 178         DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct systemcfg, tz_minuteswest));
 179         DEFINE(CFG_TZ_DSTTIME, offsetof(struct systemcfg, tz_dsttime));
 180         DEFINE(CFG_SYSCALL_MAP32, offsetof(struct systemcfg, syscall_map_32));
 181         DEFINE(CFG_SYSCALL_MAP64, offsetof(struct systemcfg, syscall_map_64));
 182
 183         /* timeval/timezone offsets for use by vdso */
 184         DEFINE(TVAL64_TV_SEC, offsetof(struct timeval, tv_sec));
 185         DEFINE(TVAL64_TV_USEC, offsetof(struct timeval, tv_usec));
 186         DEFINE(TVAL32_TV_SEC, offsetof(struct compat_timeval, tv_sec));
 187         DEFINE(TVAL32_TV_USEC, offsetof(struct compat_timeval, tv_usec));
 188         DEFINE(TZONE_TZ_MINWEST, offsetof(struct timezone, tz_minuteswest));
 189         DEFINE(TZONE_TZ_DSTTIME, offsetof(struct timezone, tz_dsttime));
 190
 191         return 0;
 192 }