arch/arm64/kernel/image-vars.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Linker script variables to be set after section resolution, as
   4  * ld.lld does not like variables assigned before SECTIONS is processed.
   5  */
   6 #ifndef __ARM64_KERNEL_IMAGE_VARS_H
   7 #define __ARM64_KERNEL_IMAGE_VARS_H
   8
   9 #ifndef LINKER_SCRIPT
  10 #error This file should only be included in vmlinux.lds.S
  11 #endif
  12
  13 #ifdef CONFIG_EFI
  14
  15 __efistub_stext_offset = stext - _text;
  16
  17 /*
  18  * The EFI stub has its own symbol namespace prefixed by __efistub_, to
  19  * isolate it from the kernel proper. The following symbols are legally
  20  * accessed by the stub, so provide some aliases to make them accessible.
  21  * Only include data symbols here, or text symbols of functions that are
  22  * guaranteed to be safe when executed at another offset than they were
  23  * linked at. The routines below are all implemented in assembler in a
  24  * position independent manner
  25  */
  26 __efistub_memcmp                = __pi_memcmp;
  27 __efistub_memchr                = __pi_memchr;
  28 __efistub_memcpy                = __pi_memcpy;
  29 __efistub_memmove               = __pi_memmove;
  30 __efistub_memset                = __pi_memset;
  31 __efistub_strlen                = __pi_strlen;
  32 __efistub_strnlen               = __pi_strnlen;
  33 __efistub_strcmp                = __pi_strcmp;
  34 __efistub_strncmp               = __pi_strncmp;
  35 __efistub_strrchr               = __pi_strrchr;
  36 __efistub___flush_dcache_area   = __pi___flush_dcache_area;
  37
  38 #ifdef CONFIG_KASAN
  39 __efistub___memcpy              = __pi_memcpy;
  40 __efistub___memmove             = __pi_memmove;
  41 __efistub___memset              = __pi_memset;
  42 #endif
  43
  44 __efistub__text                 = _text;
  45 __efistub__end                  = _end;
  46 __efistub__edata                = _edata;
  47 __efistub_screen_info           = screen_info;
  48
  49 #endif
  50
  51 #endif /* __ARM64_KERNEL_IMAGE_VARS_H */