arch/arm/include/asm/vmlinux.lds.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <asm-generic/vmlinux.lds.h>
   3
   4 #ifdef CONFIG_HOTPLUG_CPU
   5 #define ARM_CPU_DISCARD(x)
   6 #define ARM_CPU_KEEP(x)         x
   7 #else
   8 #define ARM_CPU_DISCARD(x)      x
   9 #define ARM_CPU_KEEP(x)
  10 #endif
  11
  12 #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
  13         defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL)
  14 #define ARM_EXIT_KEEP(x)        x
  15 #define ARM_EXIT_DISCARD(x)
  16 #else
  17 #define ARM_EXIT_KEEP(x)
  18 #define ARM_EXIT_DISCARD(x)     x
  19 #endif
  20
  21 #ifdef CONFIG_MMU
  22 #define ARM_MMU_KEEP(x)         x
  23 #define ARM_MMU_DISCARD(x)
  24 #else
  25 #define ARM_MMU_KEEP(x)
  26 #define ARM_MMU_DISCARD(x)      x
  27 #endif
  28
  29 #define PROC_INFO                                                       \
  30                 . = ALIGN(4);                                           \
  31                 __proc_info_begin = .;                                  \
  32                 *(.proc.info.init)                                      \
  33                 __proc_info_end = .;
  34
  35 #define IDMAP_TEXT                                                      \
  36                 ALIGN_FUNCTION();                                       \
  37                 __idmap_text_start = .;                                 \
  38                 *(.idmap.text)                                          \
  39                 __idmap_text_end = .;                                   \
  40
  41 #define ARM_DISCARD                                                     \
  42                 *(.ARM.exidx.exit.text)                                 \
  43                 *(.ARM.extab.exit.text)                                 \
  44                 *(.ARM.exidx.text.exit)                                 \
  45                 *(.ARM.extab.text.exit)                                 \
  46                 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))             \
  47                 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))             \
  48                 ARM_EXIT_DISCARD(EXIT_TEXT)                             \
  49                 ARM_EXIT_DISCARD(EXIT_DATA)                             \
  50                 EXIT_CALL                                               \
  51                 ARM_MMU_DISCARD(*(.text.fixup))                         \
  52                 ARM_MMU_DISCARD(*(__ex_table))                          \
  53                 COMMON_DISCARDS
  54
  55 /*
  56  * Sections that should stay zero sized, which is safer to explicitly
  57  * check instead of blindly discarding.
  58  */
  59 #define ARM_ASSERTS                                                     \
  60         .plt : {                                                        \
  61                 *(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt)             \
  62         }                                                               \
  63         ASSERT(SIZEOF(.plt) == 0,                                       \
  64                "Unexpected run-time procedure linkages detected!")
  65
  66 #define ARM_DETAILS                                                     \
  67                 ELF_DETAILS                                             \
  68                 .ARM.attributes 0 : { *(.ARM.attributes) }
  69
  70 #define ARM_STUBS_TEXT                                                  \
  71                 *(.gnu.warning)                                         \
  72                 *(.glue_7)                                              \
  73                 *(.glue_7t)                                             \
  74                 *(.vfp11_veneer)                                        \
  75                 *(.v4_bx)
  76
  77 #define ARM_TEXT                                                        \
  78                 IDMAP_TEXT                                              \
  79                 __entry_text_start = .;                                 \
  80                 *(.entry.text)                                          \
  81                 __entry_text_end = .;                                   \
  82                 IRQENTRY_TEXT                                           \
  83                 SOFTIRQENTRY_TEXT                                       \
  84                 TEXT_TEXT                                               \
  85                 SCHED_TEXT                                              \
  86                 CPUIDLE_TEXT                                            \
  87                 LOCK_TEXT                                               \
  88                 KPROBES_TEXT                                            \
  89                 ARM_STUBS_TEXT                                          \
  90                 . = ALIGN(4);                                           \
  91                 *(.got)                 /* Global offset table */       \
  92                 ARM_CPU_KEEP(PROC_INFO)
  93
  94 /* Stack unwinding tables */
  95 #define ARM_UNWIND_SECTIONS                                             \
  96         . = ALIGN(8);                                                   \
  97         .ARM.unwind_idx : {                                             \
  98                 __start_unwind_idx = .;                                 \
  99                 *(.ARM.exidx*)                                          \
 100                 __stop_unwind_idx = .;                                  \
 101         }                                                               \
 102         .ARM.unwind_tab : {                                             \
 103                 __start_unwind_tab = .;                                 \
 104                 *(.ARM.extab*)                                          \
 105                 __stop_unwind_tab = .;                                  \
 106         }
 107
 108 /*
 109  * The vectors and stubs are relocatable code, and the
 110  * only thing that matters is their relative offsets
 111  */
 112 #define ARM_VECTORS                                                     \
 113         __vectors_start = .;                                            \
 114         .vectors 0xffff0000 : AT(__vectors_start) {                     \
 115                 *(.vectors)                                             \
 116         }                                                               \
 117         . = __vectors_start + SIZEOF(.vectors);                         \
 118         __vectors_end = .;                                              \
 119                                                                         \
 120         __stubs_start = .;                                              \
 121         .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {            \
 122                 *(.stubs)                                               \
 123         }                                                               \
 124         . = __stubs_start + SIZEOF(.stubs);                             \
 125         __stubs_end = .;                                                \
 126                                                                         \
 127         PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
 128
 129 #define ARM_TCM                                                         \
 130         __itcm_start = ALIGN(4);                                        \
 131         .text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) {       \
 132                 __sitcm_text = .;                                       \
 133                 *(.tcm.text)                                            \
 134                 *(.tcm.rodata)                                          \
 135                 . = ALIGN(4);                                           \
 136                 __eitcm_text = .;                                       \
 137         }                                                               \
 138         . = __itcm_start + SIZEOF(.text_itcm);                          \
 139                                                                         \
 140         __dtcm_start = .;                                               \
 141         .data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) {       \
 142                 __sdtcm_data = .;                                       \
 143                 *(.tcm.data)                                            \
 144                 . = ALIGN(4);                                           \
 145                 __edtcm_data = .;                                       \
 146         }                                                               \
 147         . = __dtcm_start + SIZEOF(.data_dtcm);