linux/arch/m68knommu/kernel/asm-offsets.c
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   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 <linux/ptrace.h>
  15#include <linux/hardirq.h>
  16#include <linux/kbuild.h>
  17#include <asm/bootinfo.h>
  18#include <asm/irq.h>
  19#include <asm/thread_info.h>
  20
  21int main(void)
  22{
  23        /* offsets into the task struct */
  24        DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
  25        DEFINE(TASK_MM, offsetof(struct task_struct, mm));
  26
  27        /* offsets into the irq_cpustat_t struct */
  28        DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
  29
  30        /* offsets into the thread struct */
  31        DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
  32        DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
  33        DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));
  34        DEFINE(THREAD_FS, offsetof(struct thread_struct, fs));
  35        DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
  36        DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
  37        DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
  38        DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
  39        DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));
  40
  41        /* offsets into the pt_regs */
  42        DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0));
  43        DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0));
  44        DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1));
  45        DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2));
  46        DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3));
  47        DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4));
  48        DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5));
  49        DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0));
  50        DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1));
  51        DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2));
  52        DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc));
  53        DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr));
  54
  55#ifdef CONFIG_COLDFIRE
  56        /* bitfields are a bit difficult */
  57        DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2);
  58#else
  59        /* bitfields are a bit difficult */
  60        DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4);
  61#endif
  62
  63        /* signal defines */
  64        DEFINE(SIGSEGV, SIGSEGV);
  65        DEFINE(SEGV_MAPERR, SEGV_MAPERR);
  66        DEFINE(SIGTRAP, SIGTRAP);
  67        DEFINE(TRAP_TRACE, TRAP_TRACE);
  68
  69        DEFINE(PT_PTRACED, PT_PTRACED);
  70
  71        /* Offsets in thread_info structure */
  72        DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
  73        DEFINE(TI_PREEMPTCOUNT, offsetof(struct thread_info, preempt_count));
  74
  75        return 0;
  76}
  77