arch/m68knommu/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 <linux/ptrace.h>
  15 #include <linux/hardirq.h>
  16 #include <asm/bootinfo.h>
  17 #include <asm/irq.h>
  18 #include <asm/irqnode.h>
  19 #include <asm/thread_info.h>
  20
  21 #define DEFINE(sym, val) \
  22         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  23
  24 #define BLANK() asm volatile("\n->" : : )
  25
  26 int main(void)
  27 {
  28         /* offsets into the task struct */
  29         DEFINE(TASK_STATE, offsetof(struct task_struct, state));
  30         DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
  31         DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
  32         DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
  33         DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
  34         DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info));
  35         DEFINE(TASK_MM, offsetof(struct task_struct, mm));
  36         DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
  37
  38         /* offsets into the kernel_stat struct */
  39         DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs));
  40
  41         /* offsets into the irq_cpustat_t struct */
  42         DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
  43
  44         /* offsets into the thread struct */
  45         DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
  46         DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
  47         DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));
  48         DEFINE(THREAD_FS, offsetof(struct thread_struct, fs));
  49         DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
  50         DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
  51         DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
  52         DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
  53         DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));
  54
  55         /* offsets into the pt_regs */
  56         DEFINE(PT_D0, offsetof(struct pt_regs, d0));
  57         DEFINE(PT_ORIG_D0, offsetof(struct pt_regs, orig_d0));
  58         DEFINE(PT_D1, offsetof(struct pt_regs, d1));
  59         DEFINE(PT_D2, offsetof(struct pt_regs, d2));
  60         DEFINE(PT_D3, offsetof(struct pt_regs, d3));
  61         DEFINE(PT_D4, offsetof(struct pt_regs, d4));
  62         DEFINE(PT_D5, offsetof(struct pt_regs, d5));
  63         DEFINE(PT_A0, offsetof(struct pt_regs, a0));
  64         DEFINE(PT_A1, offsetof(struct pt_regs, a1));
  65         DEFINE(PT_A2, offsetof(struct pt_regs, a2));
  66         DEFINE(PT_PC, offsetof(struct pt_regs, pc));
  67         DEFINE(PT_SR, offsetof(struct pt_regs, sr));
  68
  69 #ifdef CONFIG_COLDFIRE
  70         /* bitfields are a bit difficult */
  71         DEFINE(PT_FORMATVEC, offsetof(struct pt_regs, sr) - 2);
  72 #else
  73         /* bitfields are a bit difficult */
  74         DEFINE(PT_VECTOR, offsetof(struct pt_regs, pc) + 4);
  75         /* offsets into the irq_handler struct */
  76         DEFINE(IRQ_HANDLER, offsetof(struct irq_node, handler));
  77         DEFINE(IRQ_DEVID, offsetof(struct irq_node, dev_id));
  78         DEFINE(IRQ_NEXT, offsetof(struct irq_node, next));
  79 #endif
  80
  81         /* offsets into the kernel_stat struct */
  82         DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs));
  83
  84         /* signal defines */
  85         DEFINE(SIGSEGV, SIGSEGV);
  86         DEFINE(SEGV_MAPERR, SEGV_MAPERR);
  87         DEFINE(SIGTRAP, SIGTRAP);
  88         DEFINE(TRAP_TRACE, TRAP_TRACE);
  89
  90         DEFINE(PT_PTRACED, PT_PTRACED);
  91         DEFINE(PT_DTRACE, PT_DTRACE);
  92
  93         DEFINE(THREAD_SIZE, THREAD_SIZE);
  94
  95         /* Offsets in thread_info structure */
  96         DEFINE(TI_TASK, offsetof(struct thread_info, task));
  97         DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
  98         DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
  99         DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
 100
 101         return 0;
 102 }