arch/sh/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/types.h>
  13 #include <linux/mm.h>
  14 #include <asm/thread_info.h>
  15
  16 #define DEFINE(sym, val) \
  17         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  18
  19 #define BLANK() asm volatile("\n->" : : )
  20
  21 int main(void)
  22 {
  23         /* offsets into the thread_info struct */
  24         DEFINE(TI_TASK,         offsetof(struct thread_info, task));
  25         DEFINE(TI_EXEC_DOMAIN,  offsetof(struct thread_info, exec_domain));
  26         DEFINE(TI_FLAGS,        offsetof(struct thread_info, flags));
  27         DEFINE(TI_CPU,          offsetof(struct thread_info, cpu));
  28         DEFINE(TI_PRE_COUNT,    offsetof(struct thread_info, preempt_count));
  29         DEFINE(TI_RESTART_BLOCK,offsetof(struct thread_info, restart_block));
  30
  31         return 0;
  32 }