arch/frv/kernel/asm-offsets.c

   1 /*
   2  * Generate definitions needed by assembly language modules.
   3  * This code generates raw asm output which is post-processed
   4  * to extract and format the required data.
   5  */
   6
   7 #include <linux/sched.h>
   8 #include <linux/signal.h>
   9 #include <linux/personality.h>
  10 #include <linux/kbuild.h>
  11 #include <asm/registers.h>
  12 #include <asm/ucontext.h>
  13 #include <asm/processor.h>
  14 #include <asm/thread_info.h>
  15 #include <asm/gdb-stub.h>
  16
  17 #define DEF_PTREG(sym, reg) \
  18         asm volatile("\n->" #sym " %0 offsetof(struct pt_regs, " #reg ")" \
  19                      : : "i" (offsetof(struct pt_regs, reg)))
  20
  21 #define DEF_IREG(sym, reg) \
  22         asm volatile("\n->" #sym " %0 offsetof(struct user_context, " #reg ")" \
  23                      : : "i" (offsetof(struct user_context, reg)))
  24
  25 #define DEF_FREG(sym, reg) \
  26         asm volatile("\n->" #sym " %0 offsetof(struct user_context, " #reg ")" \
  27                      : : "i" (offsetof(struct user_context, reg)))
  28
  29 #define DEF_0REG(sym, reg) \
  30         asm volatile("\n->" #sym " %0 offsetof(struct frv_frame0, " #reg ")" \
  31                      : : "i" (offsetof(struct frv_frame0, reg)))
  32
  33 void foo(void)
  34 {
  35         /* offsets into the thread_info structure */
  36         OFFSET(TI_TASK,                 thread_info, task);
  37         OFFSET(TI_FLAGS,                thread_info, flags);
  38         OFFSET(TI_STATUS,               thread_info, status);
  39         OFFSET(TI_CPU,                  thread_info, cpu);
  40         OFFSET(TI_PREEMPT_COUNT,        thread_info, preempt_count);
  41         OFFSET(TI_ADDR_LIMIT,           thread_info, addr_limit);
  42         BLANK();
  43
  44         /* offsets into register file storage */
  45         DEF_PTREG(REG_PSR,              psr);
  46         DEF_PTREG(REG_ISR,              isr);
  47         DEF_PTREG(REG_CCR,              ccr);
  48         DEF_PTREG(REG_CCCR,             cccr);
  49         DEF_PTREG(REG_LR,               lr);
  50         DEF_PTREG(REG_LCR,              lcr);
  51         DEF_PTREG(REG_PC,               pc);
  52         DEF_PTREG(REG__STATUS,          __status);
  53         DEF_PTREG(REG_SYSCALLNO,        syscallno);
  54         DEF_PTREG(REG_ORIG_GR8,         orig_gr8);
  55         DEF_PTREG(REG_GNER0,            gner0);
  56         DEF_PTREG(REG_GNER1,            gner1);
  57         DEF_PTREG(REG_IACC0,            iacc0);
  58         DEF_PTREG(REG_TBR,              tbr);
  59         DEF_PTREG(REG_GR0,              tbr);
  60         DEFINE(REG__END,                sizeof(struct pt_regs));
  61         BLANK();
  62
  63         DEF_0REG(REG_DCR,               debug.dcr);
  64         DEF_0REG(REG_IBAR0,             debug.ibar[0]);
  65         DEF_0REG(REG_DBAR0,             debug.dbar[0]);
  66         DEF_0REG(REG_DBDR00,            debug.dbdr[0][0]);
  67         DEF_0REG(REG_DBMR00,            debug.dbmr[0][0]);
  68         BLANK();
  69
  70         DEF_IREG(__INT_GR0,             i.gr[0]);
  71         DEF_FREG(__USER_FPMEDIA,        f);
  72         DEF_FREG(__FPMEDIA_FR0,         f.fr[0]);
  73         DEF_FREG(__FPMEDIA_FNER0,       f.fner[0]);
  74         DEF_FREG(__FPMEDIA_MSR0,        f.msr[0]);
  75         DEF_FREG(__FPMEDIA_ACC0,        f.acc[0]);
  76         DEF_FREG(__FPMEDIA_ACCG0,       f.accg[0]);
  77         DEF_FREG(__FPMEDIA_FSR0,        f.fsr[0]);
  78         BLANK();
  79
  80         DEFINE(NR_PT_REGS,              sizeof(struct pt_regs) / 4);
  81         DEFINE(NR_USER_INT_REGS,        sizeof(struct user_int_regs) / 4);
  82         DEFINE(NR_USER_FPMEDIA_REGS,    sizeof(struct user_fpmedia_regs) / 4);
  83         DEFINE(NR_USER_CONTEXT,         sizeof(struct user_context) / 4);
  84         DEFINE(FRV_FRAME0_SIZE,         sizeof(struct frv_frame0));
  85         BLANK();
  86
  87         /* offsets into thread_struct */
  88         OFFSET(__THREAD_FRAME,          thread_struct, frame);
  89         OFFSET(__THREAD_CURR,           thread_struct, curr);
  90         OFFSET(__THREAD_SP,             thread_struct, sp);
  91         OFFSET(__THREAD_FP,             thread_struct, fp);
  92         OFFSET(__THREAD_LR,             thread_struct, lr);
  93         OFFSET(__THREAD_PC,             thread_struct, pc);
  94         OFFSET(__THREAD_GR16,           thread_struct, gr[0]);
  95         OFFSET(__THREAD_SCHED_LR,       thread_struct, sched_lr);
  96         OFFSET(__THREAD_FRAME0,         thread_struct, frame0);
  97         OFFSET(__THREAD_USER,           thread_struct, user);
  98         BLANK();
  99
 100         /* offsets into frv_debug_status */
 101         OFFSET(DEBUG_BPSR,              frv_debug_status, bpsr);
 102         OFFSET(DEBUG_DCR,               frv_debug_status, dcr);
 103         OFFSET(DEBUG_BRR,               frv_debug_status, brr);
 104         OFFSET(DEBUG_NMAR,              frv_debug_status, nmar);
 105         BLANK();
 106 }