172 lines
4.4 KiB
C
172 lines
4.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#include <asm-generic/vmlinux.lds.h>
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#ifdef CONFIG_HOTPLUG_CPU
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#define ARM_CPU_DISCARD(x)
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#define ARM_CPU_KEEP(x) x
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#else
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#define ARM_CPU_DISCARD(x) x
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#define ARM_CPU_KEEP(x)
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#endif
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#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
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defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL)
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#define ARM_EXIT_KEEP(x) x
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#define ARM_EXIT_DISCARD(x)
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#else
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#define ARM_EXIT_KEEP(x)
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#define ARM_EXIT_DISCARD(x) x
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#endif
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#ifdef CONFIG_MMU
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#define ARM_MMU_KEEP(x) x
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#define ARM_MMU_DISCARD(x)
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#else
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#define ARM_MMU_KEEP(x)
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#define ARM_MMU_DISCARD(x) x
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#endif
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/*
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* ld.lld does not support NOCROSSREFS:
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* https://github.com/ClangBuiltLinux/linux/issues/1609
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*/
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#ifdef CONFIG_LD_IS_LLD
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#define NOCROSSREFS
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#endif
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/* Set start/end symbol names to the LMA for the section */
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#define ARM_LMA(sym, section) \
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sym##_start = LOADADDR(section); \
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sym##_end = LOADADDR(section) + SIZEOF(section)
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#define PROC_INFO \
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. = ALIGN(4); \
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__proc_info_begin = .; \
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*(.proc.info.init) \
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__proc_info_end = .;
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#define IDMAP_TEXT \
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ALIGN_FUNCTION(); \
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__idmap_text_start = .; \
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*(.idmap.text) \
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__idmap_text_end = .; \
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#define ARM_DISCARD \
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*(.ARM.exidx.exit.text) \
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*(.ARM.extab.exit.text) \
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*(.ARM.exidx.text.exit) \
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*(.ARM.extab.text.exit) \
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ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) \
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ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) \
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ARM_EXIT_DISCARD(EXIT_TEXT) \
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ARM_EXIT_DISCARD(EXIT_DATA) \
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EXIT_CALL \
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ARM_MMU_DISCARD(*(.text.fixup)) \
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ARM_MMU_DISCARD(*(__ex_table)) \
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COMMON_DISCARDS
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/*
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* Sections that should stay zero sized, which is safer to explicitly
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* check instead of blindly discarding.
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*/
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#define ARM_ASSERTS \
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.plt : { \
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*(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt) \
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} \
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ASSERT(SIZEOF(.plt) == 0, \
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"Unexpected run-time procedure linkages detected!")
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#define ARM_DETAILS \
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ELF_DETAILS \
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.ARM.attributes 0 : { *(.ARM.attributes) }
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#define ARM_STUBS_TEXT \
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*(.gnu.warning) \
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*(.glue_7) \
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*(.glue_7t) \
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*(.vfp11_veneer) \
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*(.v4_bx)
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#define ARM_TEXT \
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IDMAP_TEXT \
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__entry_text_start = .; \
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*(.entry.text) \
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__entry_text_end = .; \
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IRQENTRY_TEXT \
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SOFTIRQENTRY_TEXT \
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TEXT_TEXT \
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SCHED_TEXT \
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LOCK_TEXT \
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KPROBES_TEXT \
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ARM_STUBS_TEXT \
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. = ALIGN(4); \
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*(.got) /* Global offset table */ \
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ARM_CPU_KEEP(PROC_INFO)
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/* Stack unwinding tables */
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#define ARM_UNWIND_SECTIONS \
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. = ALIGN(8); \
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.ARM.unwind_idx : { \
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__start_unwind_idx = .; \
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*(.ARM.exidx*) \
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__stop_unwind_idx = .; \
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} \
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.ARM.unwind_tab : { \
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__start_unwind_tab = .; \
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*(.ARM.extab*) \
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__stop_unwind_tab = .; \
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}
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/*
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* The vectors and stubs are relocatable code, and the
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* only thing that matters is their relative offsets
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*/
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#define ARM_VECTORS \
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__vectors_lma = .; \
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OVERLAY 0xffff0000 : NOCROSSREFS AT(__vectors_lma) { \
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.vectors { \
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*(.vectors) \
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} \
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.vectors.bhb.loop8 { \
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*(.vectors.bhb.loop8) \
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} \
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.vectors.bhb.bpiall { \
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*(.vectors.bhb.bpiall) \
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} \
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} \
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ARM_LMA(__vectors, .vectors); \
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ARM_LMA(__vectors_bhb_loop8, .vectors.bhb.loop8); \
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ARM_LMA(__vectors_bhb_bpiall, .vectors.bhb.bpiall); \
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. = __vectors_lma + SIZEOF(.vectors) + \
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SIZEOF(.vectors.bhb.loop8) + \
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SIZEOF(.vectors.bhb.bpiall); \
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\
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__stubs_lma = .; \
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.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) { \
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*(.stubs) \
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} \
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ARM_LMA(__stubs, .stubs); \
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. = __stubs_lma + SIZEOF(.stubs); \
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\
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PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
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#define ARM_TCM \
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__itcm_start = ALIGN(4); \
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.text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) { \
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__sitcm_text = .; \
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*(.tcm.text) \
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*(.tcm.rodata) \
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. = ALIGN(4); \
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__eitcm_text = .; \
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} \
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. = __itcm_start + SIZEOF(.text_itcm); \
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\
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__dtcm_start = .; \
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.data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) { \
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__sdtcm_data = .; \
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*(.tcm.data) \
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. = ALIGN(4); \
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__edtcm_data = .; \
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} \
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. = __dtcm_start + SIZEOF(.data_dtcm);
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