lib/asm-offsets.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Adapted from Linux v2.6.36 kernel: arch/powerpc/kernel/asm-offsets.c
   4  *
   5  * This program is used to generate definitions needed by
   6  * assembly language modules.
   7  *
   8  * We use the technique used in the OSF Mach kernel code:
   9  * generate asm statements containing #defines,
  10  * compile this file to assembler, and then extract the
  11  * #defines from the assembly-language output.
  12  */
  13
  14 #include <common.h>
  15
  16 #include <linux/kbuild.h>
  17
  18 int main(void)
  19 {
  20         /* Round up to make sure size gives nice stack alignment */
  21         DEFINE(GENERATED_GBL_DATA_SIZE,
  22                 (sizeof(struct global_data) + 15) & ~15);
  23
  24         DEFINE(GENERATED_BD_INFO_SIZE,
  25                 (sizeof(struct bd_info) + 15) & ~15);
  26
  27         DEFINE(GD_SIZE, sizeof(struct global_data));
  28
  29         DEFINE(GD_BD, offsetof(struct global_data, bd));
  30 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
  31         DEFINE(GD_MALLOC_BASE, offsetof(struct global_data, malloc_base));
  32 #endif
  33
  34         DEFINE(GD_RELOCADDR, offsetof(struct global_data, relocaddr));
  35
  36         DEFINE(GD_RELOC_OFF, offsetof(struct global_data, reloc_off));
  37
  38         DEFINE(GD_START_ADDR_SP, offsetof(struct global_data, start_addr_sp));
  39
  40         DEFINE(GD_NEW_GD, offsetof(struct global_data, new_gd));
  41
  42         return 0;
  43 }