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On Wed, 2010-02-10 at 17:16 -0800, Ian Lance Taylor wrote: > Viktor Kutuzov <vkutuzov@accesssoftek.com> writes: > > > I'm not sure. I have checked the ld scripts, but I didn't find anything > > related with it. I looked for the _begin definition in the ld sources > > and I got the same result. It looks strange for me, but anyway. > > I seen that the _end and _etext symbols were resolved during the build, > > but _begin wasn't and I added this description accordingly. > > We're going to need to track this down. I don't want to have gold > start defining a symbol which the GNU linker does not. Can you send > the complete link line and error message that you get when using gold? > Also include any linker script that may be used. Thanks. I have attached the text file with the complete link command line and error message -- binutils-gold-glibc-link-cmd-line_and_error.txt. You are right, the _begin symbol is coming from the linker script, but the used ld script -- ld.so.lds -- is empty. I took one more look on the build log and I found that the previous step should prepare an appropriate ld script, which defines _begin, but, really, doesn't do it (attached binutils-gold-make-ld-script-cmd-line.txt contains the complete cmd line). It happens because GOLD doesn't dump the linker script on -verbose (GNU linker does), which is expected by the sed script. I have attached required linker script, which was generated with the gnu linker for information (ld.so.lds-needed). So, as result, a real problem is in another place and my patch is incorrect. Please decline this patch. Sorry for the false alarm. Thank you. -Viktor.
Attachment:
binutils-gold-glibc-link-cmd-line_and_error.txt
Description: Text document
Attachment:
binutils-gold-make-ld-script-cmd-line.txt
Description: Text document
/* Script for --shared -z combreloc: shared library, combine & sort relocs */ OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") OUTPUT_ARCH(arm) ENTRY(_start) SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib"); SECTIONS { /* Read-only sections, merged into text segment: */ . = SEGMENT_START("text-segment", 0) + SIZEOF_HEADERS; _begin = . - SIZEOF_HEADERS; .note.gnu.build-id : { *(.note.gnu.build-id) } .hash : { *(.hash) } .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } .gnu.version_d : { *(.gnu.version_d) } .gnu.version_r : { *(.gnu.version_r) } .rel.dyn : { *(.rel.init) *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) *(.rel.fini) *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) *(.rel.data.rel.ro* .rel.gnu.linkonce.d.rel.ro.*) *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) *(.rel.ctors) *(.rel.dtors) *(.rel.got) *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) } .rel.ifunc.dyn : { *(.rel.ifunc.*) } .rela.dyn : { *(.rela.init) *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) *(.rela.fini) *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) *(.rela.ctors) *(.rela.dtors) *(.rela.got) *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) } .rela.ifunc.dyn : { *(.rela.ifunc.*) } .rel.plt : { *(.rel.plt) } .rela.plt : { *(.rela.plt) } .init : { KEEP (*(.init)) } =0 .plt : { *(.plt) } .text : { *(.text .stub .text.* .gnu.linkonce.t.*) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx) } =0 .fini : { KEEP (*(.fini)) } =0 PROVIDE (__etext = .); PROVIDE (_etext = .); PROVIDE (etext = .); .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } .rodata1 : { *(.rodata1) } .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } __exidx_start = .; .ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) } __exidx_end = .; .eh_frame_hdr : { *(.eh_frame_hdr) } .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) } .gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } /* Adjust the address for the data segment. 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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 ) .ctors)) KEEP (*(SORT(.ctors.*))) KEEP (*(.ctors)) } .dtors : { KEEP (*crtbegin.o(.dtors)) KEEP (*crtbegin?.o(.dtors)) KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors)) KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) } .jcr : { KEEP (*(.jcr)) } .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*) } .dynamic : { *(.dynamic) } . = DATA_SEGMENT_RELRO_END (0, .); .got : { *(.got.plt) *(.got) } .data : { __data_start = . ; *(.data .data.* .gnu.linkonce.d.*) SORT(CONSTRUCTORS) } .data1 : { *(.data1) } _edata = .; PROVIDE (edata = .); __bss_start = .; __bss_start__ = .; .bss : { *(.dynbss) *(.bss .bss.* .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. FIXME: Why do we need it? When there is no .bss section, we don't pad the .data section. */ . = ALIGN(. != 0 ? 32 / 8 : 1); } _bss_end__ = . ; __bss_end__ = . ; . = ALIGN(32 / 8); . = ALIGN(32 / 8); __end__ = . ; _end = .; PROVIDE (end = .); . = DATA_SEGMENT_END (.); /* 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) } /* DWARF debug sections. Symbols in the DWARF debugging sections are relative to the beginning of the section so we begin them at 0. */ /* DWARF 1 */ .debug 0 : { *(.debug) } .line 0 : { *(.line) } /* GNU DWARF 1 extensions */ .debug_srcinfo 0 : { *(.debug_srcinfo) } .debug_sfnames 0 : { *(.debug_sfnames) } /* DWARF 1.1 and DWARF 2 */ .debug_aranges 0 : { *(.debug_aranges) } .debug_pubnames 0 : { *(.debug_pubnames) } /* DWARF 2 */ .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } .debug_abbrev 0 : { *(.debug_abbrev) } .debug_line 0 : { *(.debug_line) } .debug_frame 0 : { *(.debug_frame) } .debug_str 0 : { *(.debug_str) } .debug_loc 0 : { *(.debug_loc) } .debug_macinfo 0 : { *(.debug_macinfo) } /* SGI/MIPS DWARF 2 extensions */ .debug_weaknames 0 : { *(.debug_weaknames) } .debug_funcnames 0 : { *(.debug_funcnames) } .debug_typenames 0 : { *(.debug_typenames) } .debug_varnames 0 : { *(.debug_varnames) } /* DWARF 3 */ .debug_pubtypes 0 : { *(.debug_pubtypes) } .debug_ranges 0 : { *(.debug_ranges) } .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) } /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) } }
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