arch/ppc/kernel/mk_defs.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 <stddef.h>
  12 #include <linux/config.h>
  13 #include <linux/signal.h>
  14 #include <linux/sched.h>
  15 #include <linux/kernel.h>
  16 #include <linux/errno.h>
  17 #include <linux/string.h>
  18 #include <linux/types.h>
  19 #include <linux/ptrace.h>
  20 #include <linux/mman.h>
  21 #include <linux/mm.h>
  22 #include <asm/io.h>
  23 #include <asm/page.h>
  24 #include <asm/pgtable.h>
  25 #include <asm/processor.h>
  26
  27 #define DEFINE(sym, val) \
  28         asm volatile("\n#define\t" #sym "\t%0" : : "i" (val))
  29
  30 int
  31 main(void)
  32 {
  33         /*DEFINE(KERNELBASE, KERNELBASE);*/
  34         DEFINE(STATE, offsetof(struct task_struct, state));
  35         DEFINE(NEXT_TASK, offsetof(struct task_struct, next_task));
  36         DEFINE(COUNTER, offsetof(struct task_struct, counter));
  37         DEFINE(PROCESSOR, offsetof(struct task_struct, processor));
  38         DEFINE(SIGPENDING, offsetof(struct task_struct, sigpending));
  39         DEFINE(THREAD, offsetof(struct task_struct, thread));
  40         DEFINE(MM, offsetof(struct task_struct, mm));
  41         DEFINE(ACTIVE_MM, offsetof(struct task_struct, active_mm));
  42         DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
  43         DEFINE(KSP, offsetof(struct thread_struct, ksp));
  44         DEFINE(PGDIR, offsetof(struct thread_struct, pgdir));
  45         DEFINE(LAST_SYSCALL, offsetof(struct thread_struct, last_syscall));
  46         DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
  47         DEFINE(PF_TRACESYS, PF_TRACESYS);
  48         DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
  49         DEFINE(NEED_RESCHED, offsetof(struct task_struct, need_resched));
  50         DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
  51         DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
  52 #ifdef CONFIG_ALTIVEC
  53         DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
  54         DEFINE(THREAD_VRSAVE, offsetof(struct thread_struct, vrsave));
  55         DEFINE(THREAD_VSCR, offsetof(struct thread_struct, vscr));
  56 #endif /* CONFIG_ALTIVEC */
  57         /* Interrupt register frame */
  58         DEFINE(TASK_UNION_SIZE, sizeof(union task_union));
  59         DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
  60         DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
  61         /* in fact we only use gpr0 - gpr9 and gpr20 - gpr23 */
  62         DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
  63         DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
  64         DEFINE(GPR2, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[2]));
  65         DEFINE(GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[3]));
  66         DEFINE(GPR4, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[4]));
  67         DEFINE(GPR5, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[5]));
  68         DEFINE(GPR6, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[6]));
  69         DEFINE(GPR7, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[7]));
  70         DEFINE(GPR8, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[8]));
  71         DEFINE(GPR9, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[9]));
  72         DEFINE(GPR10, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[10]));
  73         DEFINE(GPR11, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[11]));
  74         DEFINE(GPR12, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[12]));
  75         DEFINE(GPR13, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[13]));
  76         DEFINE(GPR14, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[14]));
  77         DEFINE(GPR15, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[15]));
  78         DEFINE(GPR16, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[16]));
  79         DEFINE(GPR17, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[17]));
  80         DEFINE(GPR18, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[18]));
  81         DEFINE(GPR19, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[19]));
  82         DEFINE(GPR20, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[20]));
  83         DEFINE(GPR21, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[21]));
  84         DEFINE(GPR22, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[22]));
  85         DEFINE(GPR23, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[23]));
  86         DEFINE(GPR24, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[24]));
  87         DEFINE(GPR25, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[25]));
  88         DEFINE(GPR26, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[26]));
  89         DEFINE(GPR27, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[27]));
  90         DEFINE(GPR28, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[28]));
  91         DEFINE(GPR29, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[29]));
  92         DEFINE(GPR30, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[30]));
  93         DEFINE(GPR31, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[31]));
  94         /* Note: these symbols include _ because they overlap with special
  95          * register names
  96          */
  97         DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
  98         DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
  99         DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
 100         DEFINE(_LINK, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, link));
 101         DEFINE(_CCR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ccr));
 102         DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
 103         DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
 104         DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
 105         /* The PowerPC 400-class processors have neither the DAR nor the DSISR
 106          * SPRs. Hence, we overload them to hold the similar DEAR and ESR SPRs
 107          * for such processors.
 108          */
 109         DEFINE(_DEAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
 110         DEFINE(_ESR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
 111         DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
 112         DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
 113         DEFINE(TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
 114         DEFINE(CLONE_VM, CLONE_VM);
 115         return 0;
 116 }