arch/m68k/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
  11 #include <linux/stddef.h>
  12 #include <linux/sched.h>
  13 #include <linux/kernel_stat.h>
  14 #include <asm/bootinfo.h>
  15 #include <asm/irq.h>
  16 #include <asm/amigahw.h>
  17 #include <linux/font.h>
  18
  19 #define DEFINE(sym, val) \
  20         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  21
  22 int main(void)
  23 {
  24         /* offsets into the task struct */
  25         DEFINE(TASK_STATE, offsetof(struct task_struct, state));
  26         DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
  27         DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
  28         DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
  29         DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info));
  30         DEFINE(TASK_MM, offsetof(struct task_struct, mm));
  31         DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
  32
  33         /* offsets into the thread struct */
  34         DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
  35         DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
  36         DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));
  37         DEFINE(THREAD_FS, offsetof(struct thread_struct, fs));
  38         DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
  39         DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
  40         DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
  41         DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
  42         DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));
  43
  44         /* offsets into the thread_info struct */
  45         DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count));
  46         DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags));
  47
  48         /* offsets into the pt_regs */
  49         DEFINE(PT_D0, offsetof(struct pt_regs, d0));
  50         DEFINE(PT_ORIG_D0, offsetof(struct pt_regs, orig_d0));
  51         DEFINE(PT_D1, offsetof(struct pt_regs, d1));
  52         DEFINE(PT_D2, offsetof(struct pt_regs, d2));
  53         DEFINE(PT_D3, offsetof(struct pt_regs, d3));
  54         DEFINE(PT_D4, offsetof(struct pt_regs, d4));
  55         DEFINE(PT_D5, offsetof(struct pt_regs, d5));
  56         DEFINE(PT_A0, offsetof(struct pt_regs, a0));
  57         DEFINE(PT_A1, offsetof(struct pt_regs, a1));
  58         DEFINE(PT_A2, offsetof(struct pt_regs, a2));
  59         DEFINE(PT_PC, offsetof(struct pt_regs, pc));
  60         DEFINE(PT_SR, offsetof(struct pt_regs, sr));
  61         /* bitfields are a bit difficult */
  62         DEFINE(PT_VECTOR, offsetof(struct pt_regs, pc) + 4);
  63
  64         /* offsets into the irq_handler struct */
  65         DEFINE(IRQ_HANDLER, offsetof(struct irq_node, handler));
  66         DEFINE(IRQ_DEVID, offsetof(struct irq_node, dev_id));
  67         DEFINE(IRQ_NEXT, offsetof(struct irq_node, next));
  68
  69         /* offsets into the kernel_stat struct */
  70         DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs));
  71
  72         /* offsets into the irq_cpustat_t struct */
  73         DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
  74
  75         /* offsets into the bi_record struct */
  76         DEFINE(BIR_TAG, offsetof(struct bi_record, tag));
  77         DEFINE(BIR_SIZE, offsetof(struct bi_record, size));
  78         DEFINE(BIR_DATA, offsetof(struct bi_record, data));
  79
  80         /* offsets into font_desc (drivers/video/console/font.h) */
  81         DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));
  82         DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));
  83         DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));
  84         DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height));
  85         DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data));
  86         DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref));
  87
  88         /* signal defines */
  89         DEFINE(SIGSEGV, SIGSEGV);
  90         DEFINE(SEGV_MAPERR, SEGV_MAPERR);
  91         DEFINE(SIGTRAP, SIGTRAP);
  92         DEFINE(TRAP_TRACE, TRAP_TRACE);
  93
  94         /* offsets into the custom struct */
  95         DEFINE(CUSTOMBASE, &amiga_custom);
  96         DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar));
  97         DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr));
  98         DEFINE(C_INTENA, offsetof(struct CUSTOM, intena));
  99         DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq));
 100         DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr));
 101         DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat));
 102         DEFINE(C_SERPER, offsetof(struct CUSTOM, serper));
 103         DEFINE(CIAABASE, &ciaa);
 104         DEFINE(CIABBASE, &ciab);
 105         DEFINE(C_PRA, offsetof(struct CIA, pra));
 106         DEFINE(ZTWOBASE, zTwoBase);
 107
 108         return 0;
 109 }