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 <asm/registers.h>
  11 #include <asm/ucontext.h>
  12 #include <asm/processor.h>
  13 #include <asm/thread_info.h>
  14 #include <asm/gdb-stub.h>
  15
  16 #define DEFINE(sym, val) \
  17         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  18
  19 #define DEF_PTREG(sym, reg) \
  20         asm volatile("\n->" #sym " %0 offsetof(struct pt_regs, " #reg ")" \
  21                      : : "i" (offsetof(struct pt_regs, reg)))
  22
  23 #define DEF_IREG(sym, reg) \
  24         asm volatile("\n->" #sym " %0 offsetof(struct user_context, " #reg ")" \
  25                      : : "i" (offsetof(struct user_context, reg)))
  26
  27 #define DEF_FREG(sym, reg) \
  28         asm volatile("\n->" #sym " %0 offsetof(struct user_context, " #reg ")" \
  29                      : : "i" (offsetof(struct user_context, reg)))
  30
  31 #define DEF_0REG(sym, reg) \
  32         asm volatile("\n->" #sym " %0 offsetof(struct frv_frame0, " #reg ")" \
  33                      : : "i" (offsetof(struct frv_frame0, reg)))
  34
  35 #define BLANK() asm volatile("\n->" : : )
  36
  37 #define OFFSET(sym, str, mem) \
  38         DEFINE(sym, offsetof(struct str, mem));
  39
  40 void foo(void)
  41 {
  42         /* offsets into the thread_info structure */
  43         OFFSET(TI_TASK,                 thread_info, task);
  44         OFFSET(TI_EXEC_DOMAIN,          thread_info, exec_domain);
  45         OFFSET(TI_FLAGS,                thread_info, flags);
  46         OFFSET(TI_STATUS,               thread_info, status);
  47         OFFSET(TI_CPU,                  thread_info, cpu);
  48         OFFSET(TI_PREEMPT_COUNT,        thread_info, preempt_count);
  49         OFFSET(TI_ADDR_LIMIT,           thread_info, addr_limit);
  50         OFFSET(TI_RESTART_BLOCK,        thread_info, restart_block);
  51         BLANK();
  52
  53         /* offsets into register file storage */
  54         DEF_PTREG(REG_PSR,              psr);
  55         DEF_PTREG(REG_ISR,              isr);
  56         DEF_PTREG(REG_CCR,              ccr);
  57         DEF_PTREG(REG_CCCR,             cccr);
  58         DEF_PTREG(REG_LR,               lr);
  59         DEF_PTREG(REG_LCR,              lcr);
  60         DEF_PTREG(REG_PC,               pc);
  61         DEF_PTREG(REG__STATUS,          __status);
  62         DEF_PTREG(REG_SYSCALLNO,        syscallno);
  63         DEF_PTREG(REG_ORIG_GR8,         orig_gr8);
  64         DEF_PTREG(REG_GNER0,            gner0);
  65         DEF_PTREG(REG_GNER1,            gner1);
  66         DEF_PTREG(REG_IACC0,            iacc0);
  67         DEF_PTREG(REG_TBR,              tbr);
  68         DEF_PTREG(REG_GR0,              tbr);
  69         DEFINE(REG__END,                sizeof(struct pt_regs));
  70         BLANK();
  71
  72         DEF_0REG(REG_DCR,               debug.dcr);
  73         DEF_0REG(REG_IBAR0,             debug.ibar[0]);
  74         DEF_0REG(REG_DBAR0,             debug.dbar[0]);
  75         DEF_0REG(REG_DBDR00,            debug.dbdr[0][0]);
  76         DEF_0REG(REG_DBMR00,            debug.dbmr[0][0]);
  77         BLANK();
  78
  79         DEF_IREG(__INT_GR0,             i.gr[0]);
  80         DEF_FREG(__USER_FPMEDIA,        f);
  81         DEF_FREG(__FPMEDIA_FR0,         f.fr[0]);
  82         DEF_FREG(__FPMEDIA_FNER0,       f.fner[0]);
  83         DEF_FREG(__FPMEDIA_MSR0,        f.msr[0]);
  84         DEF_FREG(__FPMEDIA_ACC0,        f.acc[0]);
  85         DEF_FREG(__FPMEDIA_ACCG0,       f.accg[0]);
  86         DEF_FREG(__FPMEDIA_FSR0,        f.fsr[0]);
  87         BLANK();
  88
  89         DEFINE(NR_PT_REGS,              sizeof(struct pt_regs) / 4);
  90         DEFINE(NR_USER_INT_REGS,        sizeof(struct user_int_regs) / 4);
  91         DEFINE(NR_USER_FPMEDIA_REGS,    sizeof(struct user_fpmedia_regs) / 4);
  92         DEFINE(NR_USER_CONTEXT,         sizeof(struct user_context) / 4);
  93         DEFINE(FRV_FRAME0_SIZE,         sizeof(struct frv_frame0));
  94         BLANK();
  95
  96         /* offsets into thread_struct */
  97         OFFSET(__THREAD_FRAME,          thread_struct, frame);
  98         OFFSET(__THREAD_CURR,           thread_struct, curr);
  99         OFFSET(__THREAD_SP,             thread_struct, sp);
 100         OFFSET(__THREAD_FP,             thread_struct, fp);
 101         OFFSET(__THREAD_LR,             thread_struct, lr);
 102         OFFSET(__THREAD_PC,             thread_struct, pc);
 103         OFFSET(__THREAD_GR16,           thread_struct, gr[0]);
 104         OFFSET(__THREAD_SCHED_LR,       thread_struct, sched_lr);
 105         OFFSET(__THREAD_FRAME0,         thread_struct, frame0);
 106         OFFSET(__THREAD_USER,           thread_struct, user);
 107         BLANK();
 108
 109         /* offsets into frv_debug_status */
 110         OFFSET(DEBUG_BPSR,              frv_debug_status, bpsr);
 111         OFFSET(DEBUG_DCR,               frv_debug_status, dcr);
 112         OFFSET(DEBUG_BRR,               frv_debug_status, brr);
 113         OFFSET(DEBUG_NMAR,              frv_debug_status, nmar);
 114         BLANK();
 115 }