Add some Irix 5 support, mostly from Kazumoto Kojima
<kkojima@info.kanagawa-u.ac.jp>: * emulparams/elf32bmip.sh (SCRIPT_NAME): Change to elfmips. (SHLIB_TEXT_START_ADDR): Define. (OTHER_GOT_SYMBOLS): Define. (OTHER_READWRITE_SECTIONS): Remove initialization of _gp. (EXECUTABLE_SYMBOLS): Don't define. (DYNAMIC_LINK): Don't define. * emulparams/elf32lmip.sh: Same changes as elf32bmip.sh. * scripttempl/elfmips.sc: New file. * configure.host (mips*-dec-bsd*): Change mips to mips*. (mips*-sgi-irix4*): Likewise. (mips*-sgi-irix5*): New entry. * Makefile.in (eelf32bmip.c): Depend upon elfmips.sc rather than elf.sc. (eelf32lmip.c): Likewise.
This commit is contained in:
Ian Lance Taylor
parent
21a3c2ff37
commit
fe1379d45a
19
ld/ChangeLog
19
ld/ChangeLog
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@ -1,3 +1,22 @@
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Mon Jan 15 15:07:19 1996 Ian Lance Taylor <ian@cygnus.com>
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Add some Irix 5 support, mostly from Kazumoto Kojima
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<kkojima@info.kanagawa-u.ac.jp>:
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* emulparams/elf32bmip.sh (SCRIPT_NAME): Change to elfmips.
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(SHLIB_TEXT_START_ADDR): Define.
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(OTHER_GOT_SYMBOLS): Define.
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(OTHER_READWRITE_SECTIONS): Remove initialization of _gp.
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(EXECUTABLE_SYMBOLS): Don't define.
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(DYNAMIC_LINK): Don't define.
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* emulparams/elf32lmip.sh: Same changes as elf32bmip.sh.
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* scripttempl/elfmips.sc: New file.
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* configure.host (mips*-dec-bsd*): Change mips to mips*.
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(mips*-sgi-irix4*): Likewise.
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(mips*-sgi-irix5*): New entry.
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* Makefile.in (eelf32bmip.c): Depend upon elfmips.sc rather than
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elf.sc.
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(eelf32lmip.c): Likewise.
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Sat Jan 13 09:41:43 1996 Michael Meissner <meissner@tiktok.cygnus.com>
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* scripttempl/elfppc.sc: Remove support for .rel.* sections. Add
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@ -410,10 +410,10 @@ eelf_i386.c: $(srcdir)/emulparams/elf_i386.sh \
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$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
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${GENSCRIPTS} elf_i386
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eelf32bmip.c: $(srcdir)/emulparams/elf32bmip.sh \
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$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
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$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elfmips.sc ${GEN_DEPENDS}
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${GENSCRIPTS} elf32bmip
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eelf32lmip.c: $(srcdir)/emulparams/elf32lmip.sh \
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$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
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$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elfmips.sc ${GEN_DEPENDS}
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${GENSCRIPTS} elf32lmip
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eelf32b4300.c: $(srcdir)/emulparams/elf32b4300.sh \
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$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
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@ -0,0 +1,27 @@
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SCRIPT_NAME=elfmips
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OUTPUT_FORMAT="elf32-bigmips"
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BIG_OUTPUT_FORMAT="elf32-bigmips"
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LITTLE_OUTPUT_FORMAT="elf32-littlemips"
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TEXT_START_ADDR=0x0400000
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DATA_ADDR=0x10000000
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MAXPAGESIZE=0x40000
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NONPAGED_TEXT_START_ADDR=0x0400000
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SHLIB_TEXT_START_ADDR=0x5ffe0000
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OTHER_READONLY_SECTIONS='.reginfo : { *(.reginfo) }'
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OTHER_GOT_SYMBOLS='
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_gp = . + 0x7ff0;
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'
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OTHER_READWRITE_SECTIONS='
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.lit8 : { *(.lit8) }
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.lit4 : { *(.lit4) }
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'
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TEXT_START_SYMBOLS='_ftext = . ;'
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DATA_START_SYMBOLS='_fdata = . ;'
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OTHER_BSS_SYMBOLS='_fbss = .;'
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OTHER_SECTIONS='
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.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
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.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
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'
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ARCH=mips
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TEMPLATE_NAME=elf32
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GENERATE_SHLIB_SCRIPT=yes
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@ -0,0 +1,27 @@
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SCRIPT_NAME=elfmips
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OUTPUT_FORMAT="elf32-littlemips"
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BIG_OUTPUT_FORMAT="elf32-bigmips"
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LITTLE_OUTPUT_FORMAT="elf32-littlemips"
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TEXT_START_ADDR=0x0400000
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DATA_ADDR=0x10000000
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MAXPAGESIZE=0x40000
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NONPAGED_TEXT_START_ADDR=0x0400000
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SHLIB_TEXT_START_ADDR=0x5ffe0000
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OTHER_READONLY_SECTIONS='.reginfo : { *(.reginfo) }'
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OTHER_GOT_SYMBOLS='
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_gp = . + 0x7ff0;
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'
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OTHER_READWRITE_SECTIONS='
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.lit8 : { *(.lit8) }
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.lit4 : { *(.lit4) }
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'
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TEXT_START_SYMBOLS='_ftext = . ;'
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DATA_START_SYMBOLS='_fdata = . ;'
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OTHER_BSS_SYMBOLS='_fbss = .;'
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OTHER_SECTIONS='
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.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
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.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
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'
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ARCH=mips
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TEMPLATE_NAME=elf32
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GENERATE_SHLIB_SCRIPT=yes
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@ -41,6 +41,7 @@ aout.sc
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delta68.sc
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ebmon29k.sc
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elf.sc
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elfmips.sc
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elfppc.sc
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go32coff.sc
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h8300.sc
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@ -0,0 +1,167 @@
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#
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# Unusual variables checked by this code:
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# NOP - two byte opcode for no-op (defaults to 0)
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# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
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# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
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# (e.g., .PARISC.milli)
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# OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
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# (e.g., .PARISC.global)
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# OTHER_SECTIONS - at the end
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# EXECUTABLE_SYMBOLS - symbols that must be defined for an
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# executable (e.g., _DYNAMIC_LINK)
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# TEXT_START_SYMBOLS - symbols that appear at the start of the
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# .text section.
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# DATA_START_SYMBOLS - symbols that appear at the start of the
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# .data section.
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# OTHER_BSS_SYMBOLS - symbols that appear at the start of the
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# .bss section besides __bss_start.
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#
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# When adding sections, do note that the names of some sections are used
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# when specifying the start address of the next.
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#
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# We use a start address of __start for Irix 5, _start for other
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# targets. This is for compatibility with Irix 5, and with old MIPS
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# ELF toolchains.
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if [ -z "$ENTRY" ]; then
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case "${target_alias}" in
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mips*-*-irix5*) ENTRY=__start ;;
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*) ENTRY=_start ;;
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esac
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fi
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test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
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test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
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test "$LD_FLAG" = "N" && DATA_ADDR=.
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INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
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cat <<EOF
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OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
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"${LITTLE_OUTPUT_FORMAT}")
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OUTPUT_ARCH(${ARCH})
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ENTRY(${ENTRY})
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${RELOCATING+${LIB_SEARCH_DIRS}}
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${RELOCATING+/* Do we need any of these for elf?
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__DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */}
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${RELOCATING+${EXECUTABLE_SYMBOLS}}
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${RELOCATING- /* For some reason, the Solaris linker makes bad executables
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if gld -r is used and the intermediate file has sections starting
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at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld
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bug. But for now assigning the zero vmas works. */}
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
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${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
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${CREATE_SHLIB-${INTERP}}
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.reginfo ${RELOCATING-0} : { *(.reginfo) }
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.dynamic ${RELOCATING-0} : { *(.dynamic) }
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.dynstr ${RELOCATING-0} : { *(.dynstr) }
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.dynsym ${RELOCATING-0} : { *(.dynsym) }
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.hash ${RELOCATING-0} : { *(.hash) }
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.rel.text ${RELOCATING-0} : { *(.rel.text) }
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.rela.text ${RELOCATING-0} : { *(.rela.text) }
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.rel.data ${RELOCATING-0} : { *(.rel.data) }
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.rela.data ${RELOCATING-0} : { *(.rela.data) }
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.rel.rodata ${RELOCATING-0} : { *(.rel.rodata) }
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.rela.rodata ${RELOCATING-0} : { *(.rela.rodata) }
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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.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.init ${RELOCATING-0} : { *(.rel.init) }
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.rela.init ${RELOCATING-0} : { *(.rela.init) }
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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.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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.rodata ${RELOCATING-0} : { *(.rodata) }
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.rodata1 ${RELOCATING-0} : { *(.rodata1) }
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.init ${RELOCATING-0} : { *(.init) } =${NOP-0}
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.text ${RELOCATING-0} :
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{
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${CREATE_SHLIB-${RELOCATING+${TEXT_START_SYMBOLS}}}
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*(.text)
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*(.stub)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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} =${NOP-0}
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${CREATE_SHLIB-${RELOCATING+_etext = .;}}
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${CREATE_SHLIB-${RELOCATING+PROVIDE (etext = .);}}
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.fini ${RELOCATING-0} : { *(.fini) } =${NOP-0}
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/* Adjust the address for the data segment. We want to adjust up to
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the same address within the page on the next page up. It would
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be more correct to do this:
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${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE})
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+ ((ALIGN(8) + ${MAXPAGESIZE} - ALIGN(${MAXPAGESIZE}))
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& (${MAXPAGESIZE} - 1)};}
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The current expression does not correctly handle the case of a
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text segment ending precisely at the end of a page; it causes the
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data segment to skip a page. The above expression does not have
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this problem, but it will currently (2/95) cause BFD to allocate
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a single segment, combining both text and data, for this case.
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This will prevent the text segment from being shared among
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multiple executions of the program; I think that is more
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important than losing a page of the virtual address space (note
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that no actual memory is lost; the page which is skipped can not
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be referenced). */
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${CREATE_SHLIB-${RELOCATING+. += ${DATA_ADDR} - ${TEXT_START_ADDR};}}
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${CREATE_SHLIB+${RELOCATING+. += 0x10000;}}
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.data ${RELOCATING-0} :
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{
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${CREATE_SHLIB-${RELOCATING+${DATA_START_SYMBOLS}}}
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*(.data)
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${CONSTRUCTING+CONSTRUCTORS}
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}
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.data1 ${RELOCATING-0} : { *(.data1) }
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.ctors ${RELOCATING-0} : { *(.ctors) }
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.dtors ${RELOCATING-0} : { *(.dtors) }
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${RELOCATING+${OTHER_GOT_SYMBOLS}}
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.got ${RELOCATING-0} :
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{
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*(.got.plt) *(.got)
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}
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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.sdata ${RELOCATING-0} : { *(.sdata) }
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${RELOCATING+${OTHER_READWRITE_SECTIONS}}
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${CREATE_SHLIB-${RELOCATING+_edata = .;}}
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${CREATE_SHLIB-${RELOCATING+PROVIDE (edata = .);}}
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${CREATE_SHLIB-${RELOCATING+__bss_start = .;}}
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${CREATE_SHLIB-${RELOCATING+${OTHER_BSS_SYMBOLS}}}
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.sbss ${RELOCATING-0} : { *(.sbss) *(.scommon) }
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.bss ${RELOCATING-0} :
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{
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*(.dynbss)
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*(.bss)
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*(COMMON)
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}
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${CREATE_SHLIB-${RELOCATING+_end = . ;}}
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${CREATE_SHLIB-${RELOCATING+PROVIDE (end = .);}}
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/* These are needed for ELF backends which have not yet been
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converted to the new style linker. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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/* DWARF debug sections.
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Symbols in the .debug DWARF section are relative to the beginning of the
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section so we begin .debug at 0. It's not clear yet what needs to happen
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for the others. */
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.debug 0 : { *(.debug) }
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
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.line 0 : { *(.line) }
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/* These must appear regardless of ${RELOCATING}. */
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${OTHER_SECTIONS}
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}
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EOF
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