* scripttempl/elf.sc: Add a comment giving the correspondence
between sections, per-datum sections, and linkonce sections. Make the comment true even for .bss, .sdata, .sdata2, .sbss, and .sbss2.
This commit is contained in:
Geoffrey Keating
parent
a9c9941975
commit
9ac4db9c1c
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@ -1,3 +1,10 @@
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2000-08-10 Geoff Keating <geoffk@cygnus.com>
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* scripttempl/elf.sc: Add a comment giving the correspondence
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between sections, per-datum sections, and linkonce sections. Make
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the comment true even for .bss, .sdata, .sdata2, .sbss, and
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.sbss2.
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2000-08-10 Jason Eckhardt <jle@cygnus.com>
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* emulparams/elf32_i860.sh: New file.
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@ -37,6 +37,27 @@
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# when specifying the start address of the next.
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#
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/* Many sections come in three flavours. There is the 'real' section,
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like ".data". Then there are the per-procedure or per-variable
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sections, generated by -ffunction-sections and -fdata-sections in GCC,
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and useful for --gc-sections, which for a variable "foo" might be
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".data.foo". Then there are the linkonce sections, for which the linker
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eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
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The exact correspondences are:
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Section Linkonce section
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.text .gnu.linkonce.t.foo
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.rodata .gnu.linkonce.r.foo
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.data .gnu.linkonce.d.foo
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.bss .gnu.linkonce.b.foo
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.sdata .gnu.linkonce.s.foo
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.sbss .gnu.linkonce.sb.foo
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.sdata2 .gnu.linkonce.s2.foo
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.sbss2 .gnu.linkonce.sb2.foo
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Each of these can also have corresponding .rel.* and .rela.* sections.
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*/
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test -z "$ENTRY" && ENTRY=_start
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test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
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test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
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@ -47,9 +68,9 @@ test "$LD_FLAG" = "N" && DATA_ADDR=.
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INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
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PLT=".plt ${RELOCATING-0} : { *(.plt) }"
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DYNAMIC=".dynamic ${RELOCATING-0} : { *(.dynamic) }"
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RODATA=".rodata ${RELOCATING-0} : { *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r*)} }"
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SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) }"
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SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) }"
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RODATA=".rodata ${RELOCATING-0} : { *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)} }"
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SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) ${RELOCATING+*(.sbss2.*)} ${RELOCATING+*(.gnu.linkonce.sb2.*)} }"
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SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) ${RELOCATING+*(.sdata2.*)} ${RELOCATING+*(.gnu.linkonce.s2.*)} }"
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CTOR=".ctors ${CONSTRUCTING-0} :
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{
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${CONSTRUCTING+${CTOR_START}}
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@ -130,13 +151,13 @@ SECTIONS
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{
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*(.rel.text)
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${RELOCATING+*(.rel.text.*)}
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${RELOCATING+*(.rel.gnu.linkonce.t*)}
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${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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${RELOCATING+*(.rela.gnu.linkonce.t*)}
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${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 ${RELOCATING-0} : { *(.rela.fini) }
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@ -144,26 +165,26 @@ SECTIONS
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{
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*(.rel.rodata)
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${RELOCATING+*(.rel.rodata.*)}
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${RELOCATING+*(.rel.gnu.linkonce.r*)}
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${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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${RELOCATING+*(.rela.gnu.linkonce.r*)}
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${RELOCATING+*(.rela.gnu.linkonce.r.*)}
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}
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${OTHER_READONLY_RELOC_SECTIONS}
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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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${RELOCATING+*(.rel.gnu.linkonce.d*)}
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${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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${RELOCATING+*(.rela.gnu.linkonce.d*)}
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${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 ${RELOCATING-0} : { *(.rela.ctors) }
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@ -176,22 +197,62 @@ SECTIONS
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{
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*(.rel.sdata)
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${RELOCATING+*(.rel.sdata.*)}
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${RELOCATING+*(.rel.gnu.linkonce.s*)}
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${RELOCATING+*(.rel.gnu.linkonce.s.*)}
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}
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.rela.sdata ${RELOCATING-0} :
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{
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*(.rela.sdata)
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${RELOCATING+*(.rela.sdata.*)}
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${RELOCATING+*(.rela.gnu.linkonce.s*)}
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${RELOCATING+*(.rela.gnu.linkonce.s.*)}
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}
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.rel.sbss ${RELOCATING-0} :
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{
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*(.rel.sbss)
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${RELOCATING+*(.rel.sbss.*)}
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${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
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}
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.rela.sbss ${RELOCATING-0} :
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{
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*(.rela.sbss)
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${RELOCATING+*(.rela.sbss.*)}
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${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
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}
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.rel.sdata2 ${RELOCATING-0} :
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{
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*(.rel.sdata2)
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${RELOCATING+*(.rel.sdata2.*)}
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${RELOCATING+*(.rel.gnu.linkonce.s2.*)}
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}
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.rela.sdata2 ${RELOCATING-0} :
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{
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*(.rela.sdata2)
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${RELOCATING+*(.rela.sdata2.*)}
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${RELOCATING+*(.rela.gnu.linkonce.s2.*)}
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}
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.rel.sbss2 ${RELOCATING-0} :
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{
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*(.rel.sbss2)
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${RELOCATING+*(.rel.sbss2.*)}
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${RELOCATING+*(.rel.gnu.linkonce.sb2.*)}
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}
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.rela.sbss2 ${RELOCATING-0} :
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{
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*(.rela.sbss2)
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${RELOCATING+*(.rela.sbss2.*)}
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${RELOCATING+*(.rela.gnu.linkonce.sb2.*)}
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}
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.rel.bss ${RELOCATING-0} :
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{
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*(.rel.bss)
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${RELOCATING+*(.rel.bss.*)}
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${RELOCATING+*(.rel.gnu.linkonce.b.*)}
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}
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.rela.bss ${RELOCATING-0} :
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{
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*(.rela.bss)
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${RELOCATING+*(.rela.bss.*)}
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${RELOCATING+*(.rela.gnu.linkonce.b.*)}
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}
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.rel.sbss ${RELOCATING-0} : { *(.rel.sbss) }
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.rela.sbss ${RELOCATING-0} : { *(.rela.sbss) }
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.rel.sdata2 ${RELOCATING-0} : { *(.rel.sdata2) }
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.rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2) }
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.rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2) }
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.rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2) }
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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 ${RELOCATING-0} : { *(.rela.plt) }
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${OTHER_PLT_RELOC_SECTIONS}
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@ -212,7 +273,7 @@ SECTIONS
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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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${RELOCATING+*(.gnu.linkonce.t*)}
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${RELOCATING+*(.gnu.linkonce.t.*)}
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${RELOCATING+${OTHER_TEXT_SECTIONS}}
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} =${NOP-0}
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.fini ${RELOCATING-0} :
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@ -240,7 +301,7 @@ SECTIONS
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${RELOCATING+${DATA_START_SYMBOLS}}
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*(.data)
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${RELOCATING+*(.data.*)}
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${RELOCATING+*(.gnu.linkonce.d*)}
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${RELOCATING+*(.gnu.linkonce.d.*)}
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${CONSTRUCTING+SORT(CONSTRUCTORS)}
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}
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.data1 ${RELOCATING-0} : { *(.data1) }
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@ -278,6 +339,7 @@ SECTIONS
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*(.dynsbss)
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*(.sbss)
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${RELOCATING+*(.sbss.*)}
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${RELOCATING+*(.gnu.linkonce.sb.*)}
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*(.scommon)
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${RELOCATING+PROVIDE (__sbss_end = .);}
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${RELOCATING+PROVIDE (___sbss_end = .);}
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@ -288,6 +350,7 @@ SECTIONS
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*(.dynbss)
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*(.bss)
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${RELOCATING+*(.bss.*)}
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${RELOCATING+*(.gnu.linkonce.b.*)}
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*(COMMON)
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/* Align here to ensure that the .bss section occupies space up to
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_end. Align after .bss to ensure correct alignment even if the
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