ld/scripttempl/xstormy16.sc - third_party/binutils-gdb - Git at Google

 # Copyright (C) 2014-2016 Free Software Foundation, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
 # notice and this notice are preserved.
 #
 # Unusual variables checked by this code:
 #	NOP - two byte opcode for no-op (defaults to 0)
 #	INITIAL_READONLY_SECTIONS - at start of text segment
 #	OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
 #		(e.g., .PARISC.milli)
 #	OTHER_TEXT_SECTIONS - these get put in .text when relocating
 #	OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
 #		(e.g., .PARISC.global)
 #	OTHER_SECTIONS - at the end
 #	EXECUTABLE_SYMBOLS - symbols that must be defined for an
 #		executable (e.g., _DYNAMIC_LINK)
 #	TEXT_START_SYMBOLS - symbols that appear at the start of the
 #		.text section.
 #	DATA_START_SYMBOLS - symbols that appear at the start of the
 #		.data section.
 #	OTHER_GOT_SYMBOLS - symbols defined just before .got.
 #	OTHER_GOT_SECTIONS - sections just after .got and .sdata.
 #	OTHER_BSS_SYMBOLS - symbols that appear at the start of the
 #		.bss section besides __bss_start.
 #	INPUT_FILES - INPUT command of files to always include
 #	INIT_START, INIT_END -  statements just before and just after
 # 	combination of .init sections.
 #	FINI_START, FINI_END - statements just before and just after
 # 	combination of .fini sections.
 #
 # When adding sections, do note that the names of some sections are used
 # when specifying the start address of the next.
 #

 #  Many sections come in three flavours.  There is the 'real' section,
 #  like ".data".  Then there are the per-procedure or per-variable
 #  sections, generated by -ffunction-sections and -fdata-sections in GCC,
 #  and useful for --gc-sections, which for a variable "foo" might be
 #  ".data.foo".  Then there are the linkonce sections, for which the linker
 #  eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
 #  The exact correspondences are:
 #
 #  Section	Linkonce section
 #  .text	.gnu.linkonce.t.foo
 #  .rodata	.gnu.linkonce.r.foo
 #  .data	.gnu.linkonce.d.foo
 #  .bss		.gnu.linkonce.b.foo
 #  .sdata	.gnu.linkonce.s.foo
 #  .sbss	.gnu.linkonce.sb.foo
 #  .sdata2	.gnu.linkonce.s2.foo
 #  .sbss2	.gnu.linkonce.sb2.foo
 #
 #  Each of these can also have corresponding .rel.* and .rela.* sections.

 test -z "$ENTRY" && ENTRY=_start
 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
 if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
 test -z "${ELFSIZE}" && ELFSIZE=32
 test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
 CTOR=".ctors ${CONSTRUCTING-0} :
   {
     ${CONSTRUCTING+${CTOR_START}}
     /* gcc uses crtbegin.o to find the start of
        the constructors, so we make sure it is
        first.  Because this is a wildcard, it
        doesn't matter if the user does not
        actually link against crtbegin.o; the
        linker won't look for a file to match a
        wildcard.  The wildcard also means that it
        doesn't matter which directory crtbegin.o
        is in.  */

     KEEP (*crtbegin.o(.ctors))
     KEEP (*crtbegin?.o(.ctors))

     /* We don't want to include the .ctor section from
        the crtend.o file until after the sorted ctors.
        The .ctor section from the crtend file contains the
        end of ctors marker and it must be last */

     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors))
     KEEP (*(SORT(.ctors.*)))
     KEEP (*(.ctors))
     ${CONSTRUCTING+${CTOR_END}}
   } > ROM"

 DTOR=" .dtors       ${CONSTRUCTING-0} :
   {
     ${CONSTRUCTING+${DTOR_START}}
     KEEP (*crtbegin.o(.dtors))
     KEEP (*crtbegin?.o(.dtors))
     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors))
     KEEP (*(SORT(.dtors.*)))
     KEEP (*(.dtors))
     ${CONSTRUCTING+${DTOR_END}}
   } > ROM"

 cat <<EOF
 /* Copyright (C) 2014-2016 Free Software Foundation, Inc.

    Copying and distribution of this script, with or without modification,
    are permitted in any medium without royalty provided the copyright
    notice and this notice are preserved.  */

 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
 	      "${LITTLE_OUTPUT_FORMAT}")
 OUTPUT_ARCH(${OUTPUT_ARCH})
 ${RELOCATING+ENTRY(${ENTRY})}

 ${RELOCATING+${LIB_SEARCH_DIRS}}
 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
 ${RELOCATING+${INPUT_FILES}}
 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
   if gld -r is used and the intermediate file has sections starting
   at non-zero addresses.  Could be a Solaris ld bug, could be a GNU ld
   bug.  But for now assigning the zero vmas works.  */}

 /* There are two memory regions we care about, one from 0 through 0x7F00
    that is RAM and one from 0x8000 up which is ROM.  */
 MEMORY
 {
   RAM (w) : ORIGIN = 0, LENGTH = 0x7F00
   ROM (!w) : ORIGIN = 0x8000, LENGTH = 0xFF8000
 }

 SECTIONS
 {
   .data  ${RELOCATING-0} :
   {
     ${RELOCATING+__rdata = .;}
     ${RELOCATING+__data = .;}
     ${RELOCATING+${DATA_START_SYMBOLS}}
     *(.data)
     ${RELOCATING+*(.data.*)}
     ${RELOCATING+*(.gnu.linkonce.d.*)}
     ${CONSTRUCTING+SORT(CONSTRUCTORS)}
   } > RAM
   ${RELOCATING+${OTHER_READWRITE_SECTIONS}}
   ${RELOCATING+${OTHER_GOT_SYMBOLS}}
   ${RELOCATING+${OTHER_GOT_SECTIONS}}
   ${RELOCATING+_edata = .;}
   ${RELOCATING+PROVIDE (edata = .);}
   ${RELOCATING+__bss_start = .;}
   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
   .bss     ${RELOCATING-0} :
   {
    *(.dynbss)
    *(.bss)
    ${RELOCATING+*(.bss.*)}
    ${RELOCATING+*(.gnu.linkonce.b.*)}
    *(COMMON)
    /* Align here to ensure that the .bss section occupies space up to
       _end.  Align after .bss to ensure correct alignment even if the
       .bss section disappears because there are no input sections.  */
    ${RELOCATING+. = ALIGN(${ALIGNMENT});}
   } > RAM
   ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
   ${RELOCATING+. = ALIGN(${ALIGNMENT});}
   ${RELOCATING+${OTHER_END_SYMBOLS}}
   ${RELOCATING+_end = .;}
   ${RELOCATING+__stack = .;}
   ${RELOCATING+PROVIDE (end = .);}

   /* Read-only sections in ROM.  */
   .int_vec     ${RELOCATING-0} : { *(.int_vec)	} ${RELOCATING+> ROM}

   .rodata ${RELOCATING-0} : { *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)} } ${RELOCATING+> ROM}
   ${RELOCATING+${CTOR}}
   ${RELOCATING+${DTOR}}
   .jcr : { KEEP (*(.jcr)) } ${RELOCATING+> ROM}
   .eh_frame : { KEEP (*(.eh_frame)) } ${RELOCATING+> ROM}
   .gcc_except_table : { *(.gcc_except_table) *(.gcc_except_table.*) } ${RELOCATING+> ROM}
   .plt : { *(.plt) } ${RELOCATING+> ROM}

   .text    ${RELOCATING-0} :
   {
     ${RELOCATING+${TEXT_START_SYMBOLS}}
     *(.text)
     ${RELOCATING+*(.text.*)}
     *(.stub)
     /* .gnu.warning sections are handled specially by elf32.em.  */
     *(.gnu.warning)
     ${RELOCATING+*(.gnu.linkonce.t.*)}
     ${RELOCATING+${OTHER_TEXT_SECTIONS}}
   } ${RELOCATING+> ROM =${NOP-0}}
   .init        ${RELOCATING-0} :
   {
     ${RELOCATING+${INIT_START}}
     KEEP (*(.init))
     ${RELOCATING+${INIT_END}}
   } ${RELOCATING+> ROM =${NOP-0}}
   .fini    ${RELOCATING-0} :
   {
     ${RELOCATING+${FINI_START}}
     KEEP (*(.fini))
     ${RELOCATING+${FINI_END}}
   } ${RELOCATING+> ROM =${NOP-0}}
   ${RELOCATING+PROVIDE (__etext = .);}
   ${RELOCATING+PROVIDE (_etext = .);}
   ${RELOCATING+PROVIDE (etext = .);}
   ${RELOCATING+${OTHER_READONLY_SECTIONS}}


   /* Stabs debugging sections.  */
   .stab 0 : { *(.stab) }
   .stabstr 0 : { *(.stabstr) }
   .stab.excl 0 : { *(.stab.excl) }
   .stab.exclstr 0 : { *(.stab.exclstr) }
   .stab.index 0 : { *(.stab.index) }
   .stab.indexstr 0 : { *(.stab.indexstr) }

   .comment 0 : { *(.comment) }

 EOF

 . $srcdir/scripttempl/DWARF.sc

 cat <<EOF
   ${RELOCATING+${OTHER_RELOCATING_SECTIONS}}

   /* These must appear regardless of ${RELOCATING}.  */
   ${OTHER_SECTIONS}
 }
 EOF
	# Copyright (C) 2014-2016 Free Software Foundation, Inc.
	#
	# Copying and distribution of this file, with or without modification,
	# are permitted in any medium without royalty provided the copyright
	# notice and this notice are preserved.
	#
	# Unusual variables checked by this code:
	# NOP - two byte opcode for no-op (defaults to 0)
	# INITIAL_READONLY_SECTIONS - at start of text segment
	# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
	# (e.g., .PARISC.milli)
	# OTHER_TEXT_SECTIONS - these get put in .text when relocating
	# OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
	# (e.g., .PARISC.global)
	# OTHER_SECTIONS - at the end
	# EXECUTABLE_SYMBOLS - symbols that must be defined for an
	# executable (e.g., _DYNAMIC_LINK)
	# TEXT_START_SYMBOLS - symbols that appear at the start of the
	# .text section.
	# DATA_START_SYMBOLS - symbols that appear at the start of the
	# .data section.
	# OTHER_GOT_SYMBOLS - symbols defined just before .got.
	# OTHER_GOT_SECTIONS - sections just after .got and .sdata.
	# OTHER_BSS_SYMBOLS - symbols that appear at the start of the
	# .bss section besides __bss_start.
	# INPUT_FILES - INPUT command of files to always include
	# INIT_START, INIT_END - statements just before and just after
	# combination of .init sections.
	# FINI_START, FINI_END - statements just before and just after
	# combination of .fini sections.
	#
	# When adding sections, do note that the names of some sections are used
	# when specifying the start address of the next.
	#

	# Many sections come in three flavours. There is the 'real' section,
	# like ".data". Then there are the per-procedure or per-variable
	# sections, generated by -ffunction-sections and -fdata-sections in GCC,
	# and useful for --gc-sections, which for a variable "foo" might be
	# ".data.foo". Then there are the linkonce sections, for which the linker
	# eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
	# The exact correspondences are:
	#
	# Section Linkonce section
	# .text .gnu.linkonce.t.foo
	# .rodata .gnu.linkonce.r.foo
	# .data .gnu.linkonce.d.foo
	# .bss .gnu.linkonce.b.foo
	# .sdata .gnu.linkonce.s.foo
	# .sbss .gnu.linkonce.sb.foo
	# .sdata2 .gnu.linkonce.s2.foo
	# .sbss2 .gnu.linkonce.sb2.foo
	#
	# Each of these can also have corresponding .rel.* and .rela.* sections.

	test -z "$ENTRY" && ENTRY=_start
	test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
	test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
	if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
	test -z "${ELFSIZE}" && ELFSIZE=32
	test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
	CTOR=".ctors ${CONSTRUCTING-0} :
	{
	${CONSTRUCTING+${CTOR_START}}
	/* gcc uses crtbegin.o to find the start of
	the constructors, so we make sure it is
	first. Because this is a wildcard, it
	doesn't matter if the user does not
	actually link against crtbegin.o; the
	linker won't look for a file to match a
	wildcard. The wildcard also means that it
	doesn't matter which directory crtbegin.o
	is in. */

	KEEP (*crtbegin.o(.ctors))
	KEEP (*crtbegin?.o(.ctors))

	/* We don't want to include the .ctor section from
	the crtend.o file until after the sorted ctors.
	The .ctor section from the crtend file contains the
	end of ctors marker and it must be last */

	KEEP ((EXCLUDE_FILE (crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors))
	KEEP ((SORT(.ctors.)))
	KEEP (*(.ctors))
	${CONSTRUCTING+${CTOR_END}}
	} > ROM"

	DTOR=" .dtors ${CONSTRUCTING-0} :
	{
	${CONSTRUCTING+${DTOR_START}}
	KEEP (*crtbegin.o(.dtors))
	KEEP (*crtbegin?.o(.dtors))
	KEEP ((EXCLUDE_FILE (crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors))
	KEEP ((SORT(.dtors.)))
	KEEP (*(.dtors))
	${CONSTRUCTING+${DTOR_END}}
	} > ROM"

	cat <<EOF
	/* Copyright (C) 2014-2016 Free Software Foundation, Inc.

	Copying and distribution of this script, with or without modification,
	are permitted in any medium without royalty provided the copyright
	notice and this notice are preserved. */

	OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
	"${LITTLE_OUTPUT_FORMAT}")
	OUTPUT_ARCH(${OUTPUT_ARCH})
	${RELOCATING+ENTRY(${ENTRY})}

	${RELOCATING+${LIB_SEARCH_DIRS}}
	${RELOCATING+${EXECUTABLE_SYMBOLS}}
	${RELOCATING+${INPUT_FILES}}
	${RELOCATING- /* For some reason, the Solaris linker makes bad executables
	if gld -r is used and the intermediate file has sections starting
	at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld
	bug. But for now assigning the zero vmas works. */}

	/* There are two memory regions we care about, one from 0 through 0x7F00
	that is RAM and one from 0x8000 up which is ROM. */
	MEMORY
	{
	RAM (w) : ORIGIN = 0, LENGTH = 0x7F00
	ROM (!w) : ORIGIN = 0x8000, LENGTH = 0xFF8000
	}

	SECTIONS
	{
	.data ${RELOCATING-0} :
	{
	${RELOCATING+__rdata = .;}
	${RELOCATING+__data = .;}
	${RELOCATING+${DATA_START_SYMBOLS}}
	*(.data)
	${RELOCATING+(.data.)}
	${RELOCATING+(.gnu.linkonce.d.)}
	${CONSTRUCTING+SORT(CONSTRUCTORS)}
	} > RAM
	${RELOCATING+${OTHER_READWRITE_SECTIONS}}
	${RELOCATING+${OTHER_GOT_SYMBOLS}}
	${RELOCATING+${OTHER_GOT_SECTIONS}}
	${RELOCATING+_edata = .;}
	${RELOCATING+PROVIDE (edata = .);}
	${RELOCATING+__bss_start = .;}
	${RELOCATING+${OTHER_BSS_SYMBOLS}}
	.bss ${RELOCATING-0} :
	{
	*(.dynbss)
	*(.bss)
	${RELOCATING+(.bss.)}
	${RELOCATING+(.gnu.linkonce.b.)}
	*(COMMON)
	/* Align here to ensure that the .bss section occupies space up to
	_end. Align after .bss to ensure correct alignment even if the
	.bss section disappears because there are no input sections. */
	${RELOCATING+. = ALIGN(${ALIGNMENT});}
	} > RAM
	${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
	${RELOCATING+. = ALIGN(${ALIGNMENT});}
	${RELOCATING+${OTHER_END_SYMBOLS}}
	${RELOCATING+_end = .;}
	${RELOCATING+__stack = .;}
	${RELOCATING+PROVIDE (end = .);}

	/* Read-only sections in ROM. */
	.int_vec ${RELOCATING-0} : { *(.int_vec) } ${RELOCATING+> ROM}

	.rodata ${RELOCATING-0} : { (.rodata) ${RELOCATING+(.rodata.)} ${RELOCATING+(.gnu.linkonce.r.*)} } ${RELOCATING+> ROM}
	${RELOCATING+${CTOR}}
	${RELOCATING+${DTOR}}
	.jcr : { KEEP (*(.jcr)) } ${RELOCATING+> ROM}
	.eh_frame : { KEEP (*(.eh_frame)) } ${RELOCATING+> ROM}
	.gcc_except_table : { (.gcc_except_table) (.gcc_except_table.*) } ${RELOCATING+> ROM}
	.plt : { *(.plt) } ${RELOCATING+> ROM}

	.text ${RELOCATING-0} :
	{
	${RELOCATING+${TEXT_START_SYMBOLS}}
	*(.text)
	${RELOCATING+(.text.)}
	*(.stub)
	/* .gnu.warning sections are handled specially by elf32.em. */
	*(.gnu.warning)
	${RELOCATING+(.gnu.linkonce.t.)}
	${RELOCATING+${OTHER_TEXT_SECTIONS}}
	} ${RELOCATING+> ROM =${NOP-0}}
	.init ${RELOCATING-0} :
	{
	${RELOCATING+${INIT_START}}
	KEEP (*(.init))
	${RELOCATING+${INIT_END}}
	} ${RELOCATING+> ROM =${NOP-0}}
	.fini ${RELOCATING-0} :
	{
	${RELOCATING+${FINI_START}}
	KEEP (*(.fini))
	${RELOCATING+${FINI_END}}
	} ${RELOCATING+> ROM =${NOP-0}}
	${RELOCATING+PROVIDE (__etext = .);}
	${RELOCATING+PROVIDE (_etext = .);}
	${RELOCATING+PROVIDE (etext = .);}
	${RELOCATING+${OTHER_READONLY_SECTIONS}}


	/* Stabs debugging sections. */
	.stab 0 : { *(.stab) }
	.stabstr 0 : { *(.stabstr) }
	.stab.excl 0 : { *(.stab.excl) }
	.stab.exclstr 0 : { *(.stab.exclstr) }
	.stab.index 0 : { *(.stab.index) }
	.stab.indexstr 0 : { *(.stab.indexstr) }

	.comment 0 : { *(.comment) }

	EOF

	. $srcdir/scripttempl/DWARF.sc

	cat <<EOF
	${RELOCATING+${OTHER_RELOCATING_SECTIONS}}

	/* These must appear regardless of ${RELOCATING}. */
	${OTHER_SECTIONS}
	}
	EOF