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[Bug gas/5900] ELF files with more than 65536 sections not handled corre
From: |
ian at airs dot com |
Subject: |
[Bug gas/5900] ELF files with more than 65536 sections not handled correctly. |
Date: |
10 Mar 2008 03:00:18 -0000 |
------- Additional Comments From ian at airs dot com 2008-03-10 03:00 -------
I think you need to qualify what you say. It is clearly true that the st_shndx
field of a symbol is not a pure section index. Any value above LORESERVE is
indeed reserved. The ELF ABI defines what to do for a symbol whose section
index is larger than LORESERVE: put SHN_XINDEX in the st_shndx field, and put
the real section index in the corresponding entry in the SHT_SYMTAB_SHNDX
section. Note that the ABI does not say to store the section index plus 256; it
says to store the section index.
None of this has anything to do with the sh_link field in section header 0 when
the section string table is larger than LORESERVE. In that case, I think the
ELF ABI says to put the section index in the sh_link field. It does not say to
put the section index plus 256. Currently BFD is putting the section index plus
256. I think that is wrong.
For the original test case, for a symbol defined in a section whose index is
larger than LORESERVE, what does icc put in the SHT_SYMTAB_SHNDX section? Does
it put the section index, or the section index plus 256? I believe that the ELF
ABI says that it should store the former. BFD stores the latter. What does the
BFD readelf -s report for those symbols in the object compiled by icc?
--
http://sourceware.org/bugzilla/show_bug.cgi?id=5900
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- [Bug gas/5900] New: ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/07
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/08
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/09
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/09
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly.,
ian at airs dot com <=
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/09
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., hjl dot tools at gmail dot com, 2008/03/10
- [Bug gas/5900] ELF files with more than 65536 sections not handled correctly., ian at airs dot com, 2008/03/10