arch/arm/kernel/vmlinux.lds.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifdef CONFIG_HOTPLUG_CPU
   4 #define ARM_CPU_DISCARD(x)
   5 #define ARM_CPU_KEEP(x)         x
   6 #else
   7 #define ARM_CPU_DISCARD(x)      x
   8 #define ARM_CPU_KEEP(x)
   9 #endif
  10
  11 #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
  12         defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL)
  13 #define ARM_EXIT_KEEP(x)        x
  14 #define ARM_EXIT_DISCARD(x)
  15 #else
  16 #define ARM_EXIT_KEEP(x)
  17 #define ARM_EXIT_DISCARD(x)     x
  18 #endif
  19
  20 #ifdef CONFIG_MMU
  21 #define ARM_MMU_KEEP(x)         x
  22 #define ARM_MMU_DISCARD(x)
  23 #else
  24 #define ARM_MMU_KEEP(x)
  25 #define ARM_MMU_DISCARD(x)      x
  26 #endif
  27
  28 #define PROC_INFO                                                       \
  29                 . = ALIGN(4);                                           \
  30                 __proc_info_begin = .;                                  \
  31                 *(.proc.info.init)                                      \
  32                 __proc_info_end = .;
  33
  34 #define IDMAP_TEXT                                                      \
  35                 ALIGN_FUNCTION();                                       \
  36                 __idmap_text_start = .;                                 \
  37                 *(.idmap.text)                                          \
  38                 __idmap_text_end = .;                                   \
  39
  40 #define ARM_DISCARD                                                     \
  41                 *(.ARM.exidx.exit.text)                                 \
  42                 *(.ARM.extab.exit.text)                                 \
  43                 *(.ARM.exidx.text.exit)                                 \
  44                 *(.ARM.extab.text.exit)                                 \
  45                 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))             \
  46                 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))             \
  47                 ARM_EXIT_DISCARD(EXIT_TEXT)                             \
  48                 ARM_EXIT_DISCARD(EXIT_DATA)                             \
  49                 EXIT_CALL                                               \
  50                 ARM_MMU_DISCARD(*(.text.fixup))                         \
  51                 ARM_MMU_DISCARD(*(__ex_table))                          \
  52                 *(.discard)                                             \
  53                 *(.discard.*)
  54
  55 #define ARM_TEXT                                                        \
  56                 IDMAP_TEXT                                              \
  57                 __entry_text_start = .;                                 \
  58                 *(.entry.text)                                          \
  59                 __entry_text_end = .;                                   \
  60                 IRQENTRY_TEXT                                           \
  61                 SOFTIRQENTRY_TEXT                                       \
  62                 TEXT_TEXT                                               \
  63                 SCHED_TEXT                                              \
  64                 CPUIDLE_TEXT                                            \
  65                 LOCK_TEXT                                               \
  66                 KPROBES_TEXT                                            \
  67                 *(.gnu.warning)                                         \
  68                 *(.glue_7)                                              \
  69                 *(.glue_7t)                                             \
  70                 . = ALIGN(4);                                           \
  71                 *(.got)                 /* Global offset table */       \
  72                 ARM_CPU_KEEP(PROC_INFO)
  73
  74 /* Stack unwinding tables */
  75 #define ARM_UNWIND_SECTIONS                                             \
  76         . = ALIGN(8);                                                   \
  77         .ARM.unwind_idx : {                                             \
  78                 __start_unwind_idx = .;                                 \
  79                 *(.ARM.exidx*)                                          \
  80                 __stop_unwind_idx = .;                                  \
  81         }                                                               \
  82         .ARM.unwind_tab : {                                             \
  83                 __start_unwind_tab = .;                                 \
  84                 *(.ARM.extab*)                                          \
  85                 __stop_unwind_tab = .;                                  \
  86         }
  87
  88 /*
  89  * The vectors and stubs are relocatable code, and the
  90  * only thing that matters is their relative offsets
  91  */
  92 #define ARM_VECTORS                                                     \
  93         __vectors_start = .;                                            \
  94         .vectors 0xffff0000 : AT(__vectors_start) {                     \
  95                 *(.vectors)                                             \
  96         }                                                               \
  97         . = __vectors_start + SIZEOF(.vectors);                         \
  98         __vectors_end = .;                                              \
  99                                                                         \
 100         __stubs_start = .;                                              \
 101         .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {            \
 102                 *(.stubs)                                               \
 103         }                                                               \
 104         . = __stubs_start + SIZEOF(.stubs);                             \
 105         __stubs_end = .;                                                \
 106                                                                         \
 107         PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
 108
 109 #define ARM_TCM                                                         \
 110         __itcm_start = ALIGN(4);                                        \
 111         .text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) {       \
 112                 __sitcm_text = .;                                       \
 113                 *(.tcm.text)                                            \
 114                 *(.tcm.rodata)                                          \
 115                 . = ALIGN(4);                                           \
 116                 __eitcm_text = .;                                       \
 117         }                                                               \
 118         . = __itcm_start + SIZEOF(.text_itcm);                          \
 119                                                                         \
 120         __dtcm_start = .;                                               \
 121         .data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) {       \
 122                 __sdtcm_data = .;                                       \
 123                 *(.tcm.data)                                            \
 124                 . = ALIGN(4);                                           \
 125                 __edtcm_data = .;                                       \
 126         }                                                               \
 127         . = __dtcm_start + SIZEOF(.data_dtcm);