ld/scripttempl/nw.sc

# 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 - four byte opcode for no-op (defaults to 0)
#	DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
#	OTHER_READONLY_SECTIONS - other than .text .init .ctors .rodata ...
#		(e.g., .PARISC.milli)
#	OTHER_READWRITE_SECTIONS - other than .data .bss .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_BSS_SYMBOLS - symbols that appear at the start of the
#		.bss section besides __bss_start.
#	DATA_PLT - .plt should be in data segment, not text segment.
#
# When adding sections, do note that the names of some sections are used
# when specifying the start address of the next.
#

test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
test "$LD_FLAG" = "N" && DATA_ADDR=.
INTERP=".interp   ${RELOCATING-0} : { *(.interp) 	}"
PLT=".plt    ${RELOCATING-0} : { *(.plt)	}"

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}",
	      "${LITTLE_OUTPUT_FORMAT}")
OUTPUT_ARCH(${ARCH})

${RELOCATING+${LIB_SEARCH_DIRS}}
${RELOCATING+/* Do we need any of these for elf?
   __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}}  */}
${RELOCATING+${EXECUTABLE_SYMBOLS}}
${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.  */}
SECTIONS
{
  /* Read-only sections, merged into text segment: */
  ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
  ${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
  ${CREATE_SHLIB-${INTERP}}
  .hash        ${RELOCATING-0} : { *(.hash)		}
  .dynsym      ${RELOCATING-0} : { *(.dynsym)		}
  .dynstr      ${RELOCATING-0} : { *(.dynstr)		}
  .rel.text    ${RELOCATING-0} : { *(.rel.text)		}
  .rela.text   ${RELOCATING-0} : { *(.rela.text) 	}
  .rel.data    ${RELOCATING-0} : { *(.rel.data)		}
  .rela.data   ${RELOCATING-0} : { *(.rela.data) 	}
  .rel.rodata  ${RELOCATING-0} : { *(.rel.rodata) 	}
  .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) 	}
  .rel.got     ${RELOCATING-0} : { *(.rel.got)		}
  .rela.got    ${RELOCATING-0} : { *(.rela.got)		}
  .rel.ctors   ${RELOCATING-0} : { *(.rel.ctors)	}
  .rela.ctors  ${RELOCATING-0} : { *(.rela.ctors)	}
  .rel.dtors   ${RELOCATING-0} : { *(.rel.dtors)	}
  .rela.dtors  ${RELOCATING-0} : { *(.rela.dtors)	}
  .rel.bss     ${RELOCATING-0} : { *(.rel.bss)		}
  .rela.bss    ${RELOCATING-0} : { *(.rela.bss)		}
  .rel.plt     ${RELOCATING-0} : { *(.rel.plt)		}
  .rela.plt    ${RELOCATING-0} : { *(.rela.plt)		}
  .init        ${RELOCATING-0} : { *(.init)	} =${NOP-0}
  ${DATA_PLT-${PLT}}
  .text    ${RELOCATING-0} :
  {
    ${RELOCATING+${TEXT_START_SYMBOLS}}
    *(.text)
    ${CONSTRUCTING+	__CTOR_LIST__ = .;}
    ${CONSTRUCTING+	LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)}
    ${CONSTRUCTING+	*(.ctors)}
    ${CONSTRUCTING+	LONG(0)}
    ${CONSTRUCTING+	__CTOR_END__ = .;}
    ${CONSTRUCTING+	__DTOR_LIST__ = .;}
    ${CONSTRUCTING+	LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)}
    ${CONSTRUCTING+	*(.dtors)}
    ${CONSTRUCTING+	LONG(0)}
    ${CONSTRUCTING+	__DTOR_END__ = .;}
  }
  ${RELOCATING+_etext = .;}
  ${RELOCATING+PROVIDE (etext = .);}
  .fini    ${RELOCATING-0} : { *(.fini)    } =${NOP-0}
  .ctors   ${RELOCATING-0} : { *(.ctors)   }
  .dtors   ${RELOCATING-0} : { *(.dtors)   }
  .rodata  ${RELOCATING-0} : { *(.rodata)  }
  .rodata1 ${RELOCATING-0} : { *(.rodata1) }
  ${OTHER_READONLY_SECTIONS}

  /* Read-write section, merged into data segment: */
  ${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};}
  .data  ${RELOCATING-0} :
  {
    ${RELOCATING+${DATA_START_SYMBOLS}}
    *(.data)
    ${CONSTRUCTING+CONSTRUCTORS}
  }
  .data1 ${RELOCATING-0} : { *(.data1) }
  ${OTHER_READWRITE_SECTIONS}
  .got         ${RELOCATING-0} : { *(.got.plt) *(.got) }
  .dynamic     ${RELOCATING-0} : { *(.dynamic) }
  ${DATA_PLT+${PLT}}
  /* We want the small data sections together, so single-instruction offsets
     can access them all, and initialized data all before uninitialized, so
     we can shorten the on-disk segment size.  */
  .sdata   ${RELOCATING-0} : { *(.sdata) }
  ${RELOCATING+_edata  =  .;}
  ${RELOCATING+PROVIDE (edata = .);}
  ${RELOCATING+__bss_start = .;}
  ${RELOCATING+${OTHER_BSS_SYMBOLS}}
  .sbss    ${RELOCATING-0} : { *(.sbss) *(.scommon) }
  .bss     ${RELOCATING-0} :
  {
   *(.dynbss)
   *(.bss)
   *(COMMON)
  }
  ${RELOCATING+_end = . ;}
  ${RELOCATING+PROVIDE (end = .);}

  /* These are needed for ELF backends which have not yet been
     converted to the new style linker.  */
  .stab 0 : { *(.stab) }
  .stabstr 0 : { *(.stabstr) }

  ${OTHER_SECTIONS}
}
EOF