mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-30 12:44:10 +08:00
2c6f3e56cb
The ".persistent" section is for data that should be initialized during
load, but not during application reset.
The ".noinit" section is for data that should not be initialized during
load or application reset.
Targets utilizing the elf.sc linker script template can define
HAVE_{NOINIT,PERSISTENT}=yes to include the .noinit or .persistent
output sections in the generated linker script.
Targets with existing support for .noinit did not handle unique
.noinit.* and .gnu.linkonce.n.* sections the .noinit output section,
this patch also fixes that.
bfd/ChangeLog:
* elf.c (special_sections_g): Add .gnu.linkonce.n and .gnu.linkonce.p.
(special_sections_n): Add .noinit.
(special_sections_p): Add .persistent.
binutils/ChangeLog:
* testsuite/lib/binutils-common.exp (supports_noinit_section): New.
(supports_persistent_section): New.
gas/ChangeLog:
* testsuite/gas/elf/elf.exp: Run new tests.
* testsuite/gas/elf/section25.d: New test.
* testsuite/gas/elf/section25.s: New test.
* testsuite/gas/elf/section26.d: New test.
* testsuite/gas/elf/section26.s: New test.
ld/ChangeLog:
* emulparams/armelf.sh (OTHER_SECTIONS): Remove .noinit section
definition.
Define HAVE_{NOINIT,PERSISTENT}=yes.
* scripttempl/avr.sc (.noinit): Add .noinit.* and .gnu.linkonce.n.*
input section wildcard patterns.
* scripttempl/elf.sc: Define .noinit and .persistent sections when
HAVE_NOINIT or HAVE_PERSISTENT are defined to "yes".
* scripttempl/elf32msp430.sc (.noinit): Add .noinit.* and
.gnu.linkonce.n.*. input section wildcard patterns.
(.persistent): Add .persistent.* and
.gnu.linkonce.p.*. input section wildcard patterns.
* scripttempl/elfarcv2.sc (.noinit): Add .noinit.* and
.gnu.linkonce.n.*. input section wildcard patterns.
* scripttempl/pru.sc: Likewise.
* testsuite/ld-elf/noinit-sections-1.d: New test.
* testsuite/ld-elf/noinit-sections-2.d: New test.
* testsuite/ld-elf/noinit-sections-2.l: New test.
* testsuite/ld-elf/noinit-sections.s: New test.
* testsuite/ld-elf/persistent-sections-1.d: New test.
* testsuite/ld-elf/persistent-sections-2.d: New test.
* testsuite/ld-elf/persistent-sections-2.l: New test.
* testsuite/ld-elf/persistent-sections.s: New test.
364 lines
10 KiB
Scala
364 lines
10 KiB
Scala
# Copyright (C) 2014-2020 Free Software Foundation, Inc.
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#
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# Copying and distribution of this file, with or without modification,
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# are permitted in any medium without royalty provided the copyright
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# notice and this notice are preserved.
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HEAP_SECTION_MSP430=" "
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HEAP_MEMORY_MSP430=" "
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if test ${GOT_HEAP_MSP-0} -ne 0
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then
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HEAP_SECTION_MSP430=".heap ${RELOCATING-0} :
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{
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${RELOCATING+ PROVIDE (__heap_data_start = .) ; }
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*(.heap*)
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${RELOCATING+ PROVIDE (_heap_data_end = .) ; }
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+ PROVIDE (__heap_bottom = .) ; }
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${RELOCATING+ PROVIDE (__heap_top = ${HEAP_START} + ${HEAP_LENGTH}) ; }
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} ${RELOCATING+ > heap}"
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HEAP_MEMORY_MSP430="heap(rwx) : ORIGIN = $HEAP_START, LENGTH = $HEAP_LENGTH"
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fi
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cat <<EOF
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/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
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Copying and distribution of this script, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved. */
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OUTPUT_FORMAT("${OUTPUT_FORMAT}","${OUTPUT_FORMAT}","${OUTPUT_FORMAT}")
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OUTPUT_ARCH(${ARCH})
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EOF
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test -n "${RELOCATING}" && cat <<EOF
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MEMORY
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{
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text (rx) : ORIGIN = $ROM_START, LENGTH = $ROM_SIZE
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data (rwx) : ORIGIN = $RAM_START, LENGTH = $RAM_SIZE
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vectors (rw) : ORIGIN = 0xffe0, LENGTH = 0x20
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bootloader(rx) : ORIGIN = 0x0c00, LENGTH = 1K
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infomem(rx) : ORIGIN = 0x1000, LENGTH = 256
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infomemnobits(rx) : ORIGIN = 0x1000, LENGTH = 256
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${HEAP_MEMORY_MSP430}
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}
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EOF
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cat <<EOF
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SECTIONS
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{
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/* Bootloader. */
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.bootloader ${RELOCATING-0} :
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{
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${RELOCATING+ PROVIDE (__boot_start = .) ; }
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*(.bootloader)
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+*(.bootloader.*)}
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} ${RELOCATING+ > bootloader}
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/* Information memory. */
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.infomem ${RELOCATING-0} :
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{
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*(.infomem)
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+*(.infomem.*)}
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} ${RELOCATING+ > infomem}
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/* Information memory (not loaded into MPU). */
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.infomemnobits ${RELOCATING-0} :
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{
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*(.infomemnobits)
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+*(.infomemnobits.*)}
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} ${RELOCATING+ > infomemnobits}
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/* Read-only sections, merged into text segment. */
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${TEXT_DYNAMIC+${DYNAMIC}}
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.hash ${RELOCATING-0} : { *(.hash) }
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.dynsym ${RELOCATING-0} : { *(.dynsym) }
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.dynstr ${RELOCATING-0} : { *(.dynstr) }
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.gnu.version ${RELOCATING-0} : { *(.gnu.version) }
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.gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
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.gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
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.rel.init ${RELOCATING-0} : { *(.rel.init) }
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.rela.init ${RELOCATING-0} : { *(.rela.init) }
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.rel.text ${RELOCATING-0} :
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{
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*(.rel.text)
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${RELOCATING+*(.rel.text.*)}
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${RELOCATING+*(.rel.gnu.linkonce.t*)}
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}
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.rela.text ${RELOCATING-0} :
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{
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*(.rela.text)
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${RELOCATING+*(.rela.text.*)}
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${RELOCATING+*(.rela.gnu.linkonce.t*)}
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}
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.rel.fini ${RELOCATING-0} : { *(.rel.fini) }
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.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
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.rel.rodata ${RELOCATING-0} :
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{
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*(.rel.rodata)
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${RELOCATING+*(.rel.rodata.*)}
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${RELOCATING+*(.rel.gnu.linkonce.r*)}
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}
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.rela.rodata ${RELOCATING-0} :
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{
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*(.rela.rodata)
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${RELOCATING+*(.rela.rodata.*)}
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${RELOCATING+*(.rela.gnu.linkonce.r*)}
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}
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.rel.data ${RELOCATING-0} :
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{
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*(.rel.data)
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${RELOCATING+*(.rel.data.*)}
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${RELOCATING+*(.rel.gnu.linkonce.d*)}
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}
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.rela.data ${RELOCATING-0} :
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{
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*(.rela.data)
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${RELOCATING+*(.rela.data.*)}
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${RELOCATING+*(.rela.gnu.linkonce.d*)}
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}
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.rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
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.rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
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.rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
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.rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
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.rel.got ${RELOCATING-0} : { *(.rel.got) }
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.rela.got ${RELOCATING-0} : { *(.rela.got) }
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.rel.bss ${RELOCATING-0} : { *(.rel.bss) }
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.rela.bss ${RELOCATING-0} : { *(.rela.bss) }
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.rel.plt ${RELOCATING-0} : { *(.rel.plt) }
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.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
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/* Internal text space. */
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.text ${RELOCATING-0} :
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{
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${RELOCATING+. = ALIGN(2);
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*(SORT_NONE(.init))
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*(SORT_NONE(.init0)) /* Start here after reset. */
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*(SORT_NONE(.init1))
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*(SORT_NONE(.init2)) /* Copy data loop */
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*(SORT_NONE(.init3))
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*(SORT_NONE(.init4)) /* Clear bss */
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*(SORT_NONE(.init5))
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*(SORT_NONE(.init6)) /* C++ constructors. */
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*(SORT_NONE(.init7))
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*(SORT_NONE(.init8))
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*(SORT_NONE(.init9)) /* Call main(). */}
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${CONSTRUCTING+ __ctors_start = . ; }
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${CONSTRUCTING+ *(.ctors) }
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${CONSTRUCTING+ __ctors_end = . ; }
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${CONSTRUCTING+ __dtors_start = . ; }
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${CONSTRUCTING+ *(.dtors) }
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${CONSTRUCTING+ __dtors_end = . ; }
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${RELOCATING+. = ALIGN(2);
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*(.lower.text.* .lower.text)
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. = ALIGN(2);}
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*(.text)
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${RELOCATING+. = ALIGN(2);
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*(.text.*)
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. = ALIGN(2);
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*(.text:*)
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*(.either.text.* .either.text)
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*(.upper.text.* .upper.text)
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. = ALIGN(2);
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*(SORT_NONE(.fini9))
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*(SORT_NONE(.fini8))
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*(SORT_NONE(.fini7))
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*(SORT_NONE(.fini6)) /* C++ destructors. */
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*(SORT_NONE(.fini5))
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*(SORT_NONE(.fini4))
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*(SORT_NONE(.fini3))
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*(SORT_NONE(.fini2))
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*(SORT_NONE(.fini1))
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*(SORT_NONE(.fini0)) /* Infinite loop after program termination. */
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*(SORT_NONE(.fini))
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_etext = .;}
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} ${RELOCATING+ > text}
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.rodata ${RELOCATING-0} :
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{
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${RELOCATING+. = ALIGN(2);
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*(.lower.rodata.* .lower.rodata)
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. = ALIGN(2);
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*(.plt)}
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*(.rodata${RELOCATING+ .rodata.* .gnu.linkonce.r.* .const .const:*})
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${RELOCATING+*(.rodata1)
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*(.either.rodata.*) *(.either.rodata)
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*(.upper.rodata.* .upper.rodata)
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*(.eh_frame_hdr)
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KEEP (*(.eh_frame))
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KEEP (*(.gcc_except_table)) *(.gcc_except_table.*)
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. = ALIGN(2);
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PROVIDE (__preinit_array_start = .);
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KEEP (*(.preinit_array))
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PROVIDE (__preinit_array_end = .);
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. = ALIGN(2);
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PROVIDE (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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PROVIDE (__init_array_end = .);
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. = ALIGN(2);
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PROVIDE (__fini_array_start = .);
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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PROVIDE (__fini_array_end = .);
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/* gcc uses crtbegin.o to find the start of the constructors, so
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we make sure it is first. Because this is a wildcard, it
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doesn't matter if the user does not actually link against
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crtbegin.o; the linker won't look for a file to match a
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wildcard. The wildcard also means that it doesn't matter which
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directory crtbegin.o is in. */
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KEEP (*crtbegin*.o(.ctors))
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/* We don't want to include the .ctor section from from the
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crtend.o file until after the sorted ctors. The .ctor section
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from the crtend file contains the end of ctors marker and it
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must be last */
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KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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KEEP (*crtbegin*.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))}
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} ${RELOCATING+ > text}
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.vectors ${RELOCATING-0} :
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{
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${RELOCATING+ PROVIDE (__vectors_start = .) ; }
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*(.vectors${RELOCATING+*})
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${RELOCATING+ _vectors_end = . ; }
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} ${RELOCATING+ > vectors}
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.data ${RELOCATING-0} :
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{
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${RELOCATING+ PROVIDE (__data_start = .) ; }
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${RELOCATING+ PROVIDE (__datastart = .) ; }
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${RELOCATING+. = ALIGN(2);
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KEEP (*(.jcr))
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*(.data.rel.ro.local) *(.data.rel.ro*)
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*(.dynamic)
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. = ALIGN(2);
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*(.lower.data.* .lower.data)}
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*(.data)
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${RELOCATING+*(.data.*)
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*(.gnu.linkonce.d*)
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KEEP (*(.gnu.linkonce.d.*personality*))
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*(.data1)
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*(.either.data.* .either.data)
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*(.upper.data.* .upper.data)
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*(.got.plt) *(.got)
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. = ALIGN(2);
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*(.sdata .sdata.* .gnu.linkonce.s.*)
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. = ALIGN(2);
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_edata = .;}
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} ${RELOCATING+ > data AT> text}
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${RELOCATING+__romdatastart = LOADADDR(.data);
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__romdatacopysize = SIZEOF(.data);}
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.bss ${RELOCATING-0}${RELOCATING+SIZEOF(.data) + ADDR(.data)} :
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{
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+ PROVIDE (__bss_start = .); }
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${RELOCATING+ PROVIDE (__bssstart = .);
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*(.lower.bss.* .lower.bss)
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. = ALIGN(2);}
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*(.bss)
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${RELOCATING+*(.either.bss.* .either.bss)
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*(.upper.bss.* .upper.bss)
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*(COMMON)
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PROVIDE (__bss_end = .);}
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} ${RELOCATING+ > data}
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${RELOCATING+ PROVIDE (__bsssize = SIZEOF(.bss)); }
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/* This section contains data that is not initialized during load,
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or during the application's initialization sequence. */
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.noinit ${RELOCATING-0}${RELOCATING+SIZEOF(.bss) + ADDR(.bss)} :
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{
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+ PROVIDE (__noinit_start = .) ; }
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*(.noinit${RELOCATING+ .noinit.* .gnu.linkonce.n.*})
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+ PROVIDE (__noinit_end = .) ; }
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} ${RELOCATING+ > data}
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/* This section contains data that is initialized during load,
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but not during the application's initialization sequence. */
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.persistent ${RELOCATING-0}${RELOCATING+SIZEOF(.noinit) + ADDR(.noinit)} :
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{
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+ PROVIDE (__persistent_start = .) ; }
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*(.persistent${RELOCATING+ .persistent.* .gnu.linkonce.p.*})
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${RELOCATING+. = ALIGN(2);}
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${RELOCATING+ PROVIDE (__persistent_end = .) ; }
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} ${RELOCATING+ > data}
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${RELOCATING+ _end = . ; }
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${HEAP_SECTION_MSP430}
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/* Stabs for profiling information*/
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.profiler 0 : { *(.profiler) }
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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EOF
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. $srcdir/scripttempl/DWARF.sc
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test -n "${RELOCATING}" && cat <<EOF
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.MSP430.attributes 0 :
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{
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KEEP (*(.MSP430.attributes))
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KEEP (*(.gnu.attributes))
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KEEP (*(__TI_build_attributes))
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}
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PROVIDE (__stack = ${STACK}) ;
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PROVIDE (__data_start_rom = _etext) ;
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PROVIDE (__data_end_rom = _etext + SIZEOF (.data)) ;
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PROVIDE (__noinit_start_rom = _etext + SIZEOF (.data)) ;
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PROVIDE (__noinit_end_rom = _etext + SIZEOF (.data) + SIZEOF (.noinit)) ;
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PROVIDE (__subdevice_has_heap = ${GOT_HEAP_MSP-0}) ;
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EOF
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cat <<EOF
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}
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EOF
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