| 1 |
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| 2 | #include <asm-generic/vmlinux.lds.h>
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| 3 |
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| 4 | #ifdef CONFIG_HOTPLUG_CPU
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| 5 | #define ARM_CPU_DISCARD(x)
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| 6 | #define ARM_CPU_KEEP(x) x
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| 7 | #else
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| 8 | #define ARM_CPU_DISCARD(x) x
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| 9 | #define ARM_CPU_KEEP(x)
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| 10 | #endif
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| 11 |
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| 12 | #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
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| 13 | defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL)
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| 14 | #define ARM_EXIT_KEEP(x) x
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| 15 | #define ARM_EXIT_DISCARD(x)
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| 16 | #else
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| 17 | #define ARM_EXIT_KEEP(x)
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| 18 | #define ARM_EXIT_DISCARD(x) x
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| 19 | #endif
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| 20 |
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| 21 | #ifdef CONFIG_MMU
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| 22 | #define ARM_MMU_KEEP(x) KEEP(x)
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| 23 | #define ARM_MMU_DISCARD(x)
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| 24 | #else
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| 25 | #define ARM_MMU_KEEP(x)
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| 26 | #define ARM_MMU_DISCARD(x) x
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| 27 | #endif
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| 28 |
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| 29 | |
| 30 | * ld.lld does not support NOCROSSREFS:
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| 31 | * https://github.com/ClangBuiltLinux/linux/issues/1609
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| 32 |
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| 33 | #ifdef CONFIG_LD_IS_LLD
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| 34 | #define NOCROSSREFS
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| 35 | #endif
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| 36 |
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| 37 | #ifdef CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY
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| 38 | #define OVERLAY_KEEP(x) KEEP(x)
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| 39 | #else
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| 40 | #define OVERLAY_KEEP(x) x
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| 41 | #endif
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| 42 |
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| 43 |
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| 44 | #define ARM_LMA(sym, section) \
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| 45 | sym##_start = LOADADDR(section); \
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| 46 | sym##_end = LOADADDR(section) + SIZEOF(section)
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| 47 |
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| 48 | #define PROC_INFO \
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| 49 | . = ALIGN(4); \
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| 50 | __proc_info_begin = .; \
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| 51 | KEEP(*(.proc.info.init)) \
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| 52 | __proc_info_end = .;
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| 53 |
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| 54 | #define IDMAP_TEXT \
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| 55 | ALIGN_FUNCTION(); \
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| 56 | __idmap_text_start = .; \
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| 57 | *(.idmap.text) \
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| 58 | __idmap_text_end = .; \
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| 59 |
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| 60 | #define ARM_DISCARD \
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| 61 | *(.ARM.exidx.exit.text) \
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| 62 | *(.ARM.extab.exit.text) \
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| 63 | *(.ARM.exidx.text.exit) \
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| 64 | *(.ARM.extab.text.exit) \
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| 65 | ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) \
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| 66 | ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) \
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| 67 | ARM_EXIT_DISCARD(EXIT_TEXT) \
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| 68 | ARM_EXIT_DISCARD(EXIT_DATA) \
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| 69 | EXIT_CALL \
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| 70 | ARM_MMU_DISCARD(*(.text.fixup)) \
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| 71 | ARM_MMU_DISCARD(*(__ex_table)) \
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| 72 | COMMON_DISCARDS
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| 73 |
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| 74 | |
| 75 | * Sections that should stay zero sized, which is safer to explicitly
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| 76 | * check instead of blindly discarding.
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| 77 |
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| 78 | #define ARM_ASSERTS \
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| 79 | .plt : { \
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| 80 | *(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt) \
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| 81 | } \
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| 82 | ASSERT(SIZEOF(.plt) == 0, \
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| 83 | "Unexpected run-time procedure linkages detected!")
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| 84 |
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| 85 | #define ARM_DETAILS \
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| 86 | ELF_DETAILS \
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| 87 | .ARM.attributes 0 : { *(.ARM.attributes) }
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| 88 |
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| 89 | #define ARM_STUBS_TEXT \
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| 90 | *(.gnu.warning) \
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| 91 | *(.glue_7) \
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| 92 | *(.glue_7t) \
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| 93 | *(.vfp11_veneer) \
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| 94 | *(.v4_bx)
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| 95 |
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| 96 | #define ARM_TEXT \
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| 97 | IDMAP_TEXT \
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| 98 | __entry_text_start = .; \
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| 99 | *(.entry.text) \
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| 100 | __entry_text_end = .; \
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| 101 | IRQENTRY_TEXT \
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| 102 | SOFTIRQENTRY_TEXT \
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| 103 | TEXT_TEXT \
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| 104 | SCHED_TEXT \
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| 105 | LOCK_TEXT \
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| 106 | KPROBES_TEXT \
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| 107 | ARM_STUBS_TEXT \
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| 108 | . = ALIGN(4); \
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| 109 | *(.got) \
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| 110 | ARM_CPU_KEEP(PROC_INFO)
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| 111 |
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| 112 |
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| 113 | #define ARM_UNWIND_SECTIONS \
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| 114 | . = ALIGN(8); \
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| 115 | .ARM.unwind_idx : { \
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| 116 | __start_unwind_idx = .; \
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| 117 | *(.ARM.exidx*) \
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| 118 | __stop_unwind_idx = .; \
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| 119 | } \
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| 120 | .ARM.unwind_tab : { \
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| 121 | __start_unwind_tab = .; \
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| 122 | *(.ARM.extab*) \
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| 123 | __stop_unwind_tab = .; \
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| 124 | }
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| 125 |
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| 126 | |
| 127 | * The vectors and stubs are relocatable code, and the
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| 128 | * only thing that matters is their relative offsets
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| 129 |
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| 130 | #define ARM_VECTORS \
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| 131 | __vectors_lma = .; \
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| 132 | OVERLAY 0xffff0000 : NOCROSSREFS AT(__vectors_lma) { \
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| 133 | .vectors { \
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| 134 | OVERLAY_KEEP(*(.vectors)) \
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| 135 | } \
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| 136 | .vectors.bhb.loop8 { \
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| 137 | OVERLAY_KEEP(*(.vectors.bhb.loop8)) \
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| 138 | } \
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| 139 | .vectors.bhb.bpiall { \
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| 140 | OVERLAY_KEEP(*(.vectors.bhb.bpiall)) \
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| 141 | } \
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| 142 | } \
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| 143 | ARM_LMA(__vectors, .vectors); \
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| 144 | ARM_LMA(__vectors_bhb_loop8, .vectors.bhb.loop8); \
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| 145 | ARM_LMA(__vectors_bhb_bpiall, .vectors.bhb.bpiall); \
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| 146 | . = __vectors_lma + SIZEOF(.vectors) + \
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| 147 | SIZEOF(.vectors.bhb.loop8) + \
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| 148 | SIZEOF(.vectors.bhb.bpiall); \
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| 149 | \
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| 150 | __stubs_lma = .; \
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| 151 | .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) { \
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| 152 | *(.stubs) \
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| 153 | } \
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| 154 | ARM_LMA(__stubs, .stubs); \
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| 155 | . = __stubs_lma + SIZEOF(.stubs); \
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| 156 | \
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| 157 | PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
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| 158 |
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| 159 | #define ARM_TCM \
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| 160 | __itcm_start = ALIGN(4); \
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| 161 | .text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) { \
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| 162 | __sitcm_text = .; \
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| 163 | *(.tcm.text) \
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| 164 | *(.tcm.rodata) \
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| 165 | . = ALIGN(4); \
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| 166 | __eitcm_text = .; \
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| 167 | } \
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| 168 | . = __itcm_start + SIZEOF(.text_itcm); \
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| 169 | \
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| 170 | __dtcm_start = .; \
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| 171 | .data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) { \
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| 172 | __sdtcm_data = .; \
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| 173 | *(.tcm.data) \
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| 174 | . = ALIGN(4); \
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| 175 | __edtcm_data = .; \
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| 176 | } \
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| 177 | . = __dtcm_start + SIZEOF(.data_dtcm);
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