arch/mips/kernel/offset.c

   1 /*
   2  * offset.c: Calculate pt_regs and task_struct offsets.
   3  *
   4  * Copyright (C) 1996 David S. Miller
   5  * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Ralf Baechle
   6  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   7  *
   8  * Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
   9  * Copyright (C) 2000 MIPS Technologies, Inc.
  10  */
  11 #include <linux/types.h>
  12 #include <linux/sched.h>
  13 #include <linux/mm.h>
  14 #include <linux/interrupt.h>
  15
  16 #include <asm/ptrace.h>
  17 #include <asm/processor.h>
  18
  19 #define text(t) __asm__("\n@@@" t)
  20 #define _offset(type, member) (&(((type *)NULL)->member))
  21
  22 #define offset(string, ptr, member) \
  23         __asm__("\n@@@" string "%0" : : "i" (_offset(ptr, member)))
  24 #define constant(string, member) \
  25         __asm__("\n@@@" string "%x0" : : "i" (member))
  26 #define size(string, size) \
  27         __asm__("\n@@@" string "%0" : : "i" (sizeof(size)))
  28 #define linefeed text("")
  29
  30 void output_ptreg_defines(void)
  31 {
  32         text("/* MIPS pt_regs offsets. */");
  33         offset("#define PT_R0     ", struct pt_regs, regs[0]);
  34         offset("#define PT_R1     ", struct pt_regs, regs[1]);
  35         offset("#define PT_R2     ", struct pt_regs, regs[2]);
  36         offset("#define PT_R3     ", struct pt_regs, regs[3]);
  37         offset("#define PT_R4     ", struct pt_regs, regs[4]);
  38         offset("#define PT_R5     ", struct pt_regs, regs[5]);
  39         offset("#define PT_R6     ", struct pt_regs, regs[6]);
  40         offset("#define PT_R7     ", struct pt_regs, regs[7]);
  41         offset("#define PT_R8     ", struct pt_regs, regs[8]);
  42         offset("#define PT_R9     ", struct pt_regs, regs[9]);
  43         offset("#define PT_R10    ", struct pt_regs, regs[10]);
  44         offset("#define PT_R11    ", struct pt_regs, regs[11]);
  45         offset("#define PT_R12    ", struct pt_regs, regs[12]);
  46         offset("#define PT_R13    ", struct pt_regs, regs[13]);
  47         offset("#define PT_R14    ", struct pt_regs, regs[14]);
  48         offset("#define PT_R15    ", struct pt_regs, regs[15]);
  49         offset("#define PT_R16    ", struct pt_regs, regs[16]);
  50         offset("#define PT_R17    ", struct pt_regs, regs[17]);
  51         offset("#define PT_R18    ", struct pt_regs, regs[18]);
  52         offset("#define PT_R19    ", struct pt_regs, regs[19]);
  53         offset("#define PT_R20    ", struct pt_regs, regs[20]);
  54         offset("#define PT_R21    ", struct pt_regs, regs[21]);
  55         offset("#define PT_R22    ", struct pt_regs, regs[22]);
  56         offset("#define PT_R23    ", struct pt_regs, regs[23]);
  57         offset("#define PT_R24    ", struct pt_regs, regs[24]);
  58         offset("#define PT_R25    ", struct pt_regs, regs[25]);
  59         offset("#define PT_R26    ", struct pt_regs, regs[26]);
  60         offset("#define PT_R27    ", struct pt_regs, regs[27]);
  61         offset("#define PT_R28    ", struct pt_regs, regs[28]);
  62         offset("#define PT_R29    ", struct pt_regs, regs[29]);
  63         offset("#define PT_R30    ", struct pt_regs, regs[30]);
  64         offset("#define PT_R31    ", struct pt_regs, regs[31]);
  65         offset("#define PT_LO     ", struct pt_regs, lo);
  66         offset("#define PT_HI     ", struct pt_regs, hi);
  67         offset("#define PT_EPC    ", struct pt_regs, cp0_epc);
  68         offset("#define PT_BVADDR ", struct pt_regs, cp0_badvaddr);
  69         offset("#define PT_STATUS ", struct pt_regs, cp0_status);
  70         offset("#define PT_CAUSE  ", struct pt_regs, cp0_cause);
  71         size("#define PT_SIZE   ", struct pt_regs);
  72         linefeed;
  73 }
  74
  75 void output_task_defines(void)
  76 {
  77         text("/* MIPS task_struct offsets. */");
  78         offset("#define TASK_STATE         ", struct task_struct, state);
  79         offset("#define TASK_THREAD_INFO   ", struct task_struct, thread_info);
  80         offset("#define TASK_FLAGS         ", struct task_struct, flags);
  81         offset("#define TASK_MM            ", struct task_struct, mm);
  82         offset("#define TASK_PID           ", struct task_struct, pid);
  83         size(  "#define TASK_STRUCT_SIZE   ", struct task_struct);
  84         linefeed;
  85 }
  86
  87 void output_thread_info_defines(void)
  88 {
  89         text("/* MIPS thread_info offsets. */");
  90         offset("#define TI_TASK            ", struct thread_info, task);
  91         offset("#define TI_EXEC_DOMAIN     ", struct thread_info, exec_domain);
  92         offset("#define TI_FLAGS           ", struct thread_info, flags);
  93         offset("#define TI_CPU             ", struct thread_info, cpu);
  94         offset("#define TI_PRE_COUNT       ", struct thread_info, preempt_count);
  95         offset("#define TI_ADDR_LIMIT      ", struct thread_info, addr_limit);
  96         offset("#define TI_RESTART_BLOCK   ", struct thread_info, restart_block);
  97         linefeed;
  98 }
  99
 100 void output_thread_defines(void)
 101 {
 102         text("/* MIPS specific thread_struct offsets. */");
 103         offset("#define THREAD_REG16   ", struct task_struct, thread.reg16);
 104         offset("#define THREAD_REG17   ", struct task_struct, thread.reg17);
 105         offset("#define THREAD_REG18   ", struct task_struct, thread.reg18);
 106         offset("#define THREAD_REG19   ", struct task_struct, thread.reg19);
 107         offset("#define THREAD_REG20   ", struct task_struct, thread.reg20);
 108         offset("#define THREAD_REG21   ", struct task_struct, thread.reg21);
 109         offset("#define THREAD_REG22   ", struct task_struct, thread.reg22);
 110         offset("#define THREAD_REG23   ", struct task_struct, thread.reg23);
 111         offset("#define THREAD_REG29   ", struct task_struct, thread.reg29);
 112         offset("#define THREAD_REG30   ", struct task_struct, thread.reg30);
 113         offset("#define THREAD_REG31   ", struct task_struct, thread.reg31);
 114         offset("#define THREAD_STATUS  ", struct task_struct, \
 115                thread.cp0_status);
 116         offset("#define THREAD_FPU     ", struct task_struct, thread.fpu);
 117         offset("#define THREAD_BVADDR  ", struct task_struct, \
 118                thread.cp0_badvaddr);
 119         offset("#define THREAD_BUADDR  ", struct task_struct, \
 120                thread.cp0_baduaddr);
 121         offset("#define THREAD_ECODE   ", struct task_struct, \
 122                thread.error_code);
 123         offset("#define THREAD_TRAPNO  ", struct task_struct, thread.trap_no);
 124         offset("#define THREAD_MFLAGS  ", struct task_struct, thread.mflags);
 125         offset("#define THREAD_TRAMP   ", struct task_struct, \
 126                thread.irix_trampoline);
 127         offset("#define THREAD_OLDCTX  ", struct task_struct, \
 128                thread.irix_oldctx);
 129         linefeed;
 130 }
 131
 132 void output_mm_defines(void)
 133 {
 134         text("/* Linux mm_struct offsets. */");
 135         offset("#define MM_USERS      ", struct mm_struct, mm_users);
 136         offset("#define MM_PGD        ", struct mm_struct, pgd);
 137         offset("#define MM_CONTEXT    ", struct mm_struct, context);
 138         linefeed;
 139         constant("#define _PAGE_SIZE     ", PAGE_SIZE);
 140         constant("#define _PGD_ORDER     ", PGD_ORDER);
 141         constant("#define _PGDIR_SHIFT   ", PGDIR_SHIFT);
 142         linefeed;
 143 }
 144
 145 void output_sc_defines(void)
 146 {
 147         text("/* Linux sigcontext offsets. */");
 148         offset("#define SC_REGS       ", struct sigcontext, sc_regs);
 149         offset("#define SC_FPREGS     ", struct sigcontext, sc_fpregs);
 150         offset("#define SC_MDHI       ", struct sigcontext, sc_mdhi);
 151         offset("#define SC_MDLO       ", struct sigcontext, sc_mdlo);
 152         offset("#define SC_PC         ", struct sigcontext, sc_pc);
 153         offset("#define SC_STATUS     ", struct sigcontext, sc_status);
 154         offset("#define SC_FPC_CSR    ", struct sigcontext, sc_fpc_csr);
 155         offset("#define SC_FPC_EIR    ", struct sigcontext, sc_fpc_eir);
 156         offset("#define SC_CAUSE      ", struct sigcontext, sc_cause);
 157         offset("#define SC_BADVADDR   ", struct sigcontext, sc_badvaddr);
 158         linefeed;
 159 }
 160
 161 void output_signal_defined(void)
 162 {
 163         text("/* Linux signal numbers. */");
 164         constant("#define _SIGHUP     ", SIGHUP);
 165         constant("#define _SIGINT     ", SIGINT);
 166         constant("#define _SIGQUIT    ", SIGQUIT);
 167         constant("#define _SIGILL     ", SIGILL);
 168         constant("#define _SIGTRAP    ", SIGTRAP);
 169         constant("#define _SIGIOT     ", SIGIOT);
 170         constant("#define _SIGABRT    ", SIGABRT);
 171         constant("#define _SIGEMT     ", SIGEMT);
 172         constant("#define _SIGFPE     ", SIGFPE);
 173         constant("#define _SIGKILL    ", SIGKILL);
 174         constant("#define _SIGBUS     ", SIGBUS);
 175         constant("#define _SIGSEGV    ", SIGSEGV);
 176         constant("#define _SIGSYS     ", SIGSYS);
 177         constant("#define _SIGPIPE    ", SIGPIPE);
 178         constant("#define _SIGALRM    ", SIGALRM);
 179         constant("#define _SIGTERM    ", SIGTERM);
 180         constant("#define _SIGUSR1    ", SIGUSR1);
 181         constant("#define _SIGUSR2    ", SIGUSR2);
 182         constant("#define _SIGCHLD    ", SIGCHLD);
 183         constant("#define _SIGPWR     ", SIGPWR);
 184         constant("#define _SIGWINCH   ", SIGWINCH);
 185         constant("#define _SIGURG     ", SIGURG);
 186         constant("#define _SIGIO      ", SIGIO);
 187         constant("#define _SIGSTOP    ", SIGSTOP);
 188         constant("#define _SIGTSTP    ", SIGTSTP);
 189         constant("#define _SIGCONT    ", SIGCONT);
 190         constant("#define _SIGTTIN    ", SIGTTIN);
 191         constant("#define _SIGTTOU    ", SIGTTOU);
 192         constant("#define _SIGVTALRM  ", SIGVTALRM);
 193         constant("#define _SIGPROF    ", SIGPROF);
 194         constant("#define _SIGXCPU    ", SIGXCPU);
 195         constant("#define _SIGXFSZ    ", SIGXFSZ);
 196         linefeed;
 197 }
 198
 199 void output_irq_cpustat_t_defines(void)
 200 {
 201         text("/* Linux irq_cpustat_t offsets. */");
 202         offset("#define IC_SOFTIRQ_PENDING ", irq_cpustat_t, __softirq_pending);
 203         size("#define IC_IRQ_CPUSTAT_T   ", irq_cpustat_t);
 204         linefeed;
 205 }