* Reserving a section type range for LLVM
@ 2017-01-01 0:00 Peter Collingbourne via gnu-gabi
2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi
0 siblings, 1 reply; 5+ messages in thread
From: Peter Collingbourne via gnu-gabi @ 2017-01-01 0:00 UTC (permalink / raw)
To: gnu-gabi; +Cc: Rafael Ávila de Espíndola, Rui Ueyama
Hi,
I am working on a feature in LLVM which will require a special section
type for passing information between the compiler and the linker.
I see [1] that binutils has defined section types in the range
0x6fff4700..0x6fff47ff, where presumably the 0x47 ('G') stands for
GNU. In a similar fashion I would like to have the range
0x6fff4c00..0x6fff4cff reserved for LLVM.
Thanks,
Peter
[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=elfcpp/elfcpp.h;h=cce40d41dedb281c2d8f41135250c2cc39162469;hb=HEAD#l369
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Reserving a section type range for LLVM 2017-01-01 0:00 Reserving a section type range for LLVM Peter Collingbourne via gnu-gabi @ 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi 2017-01-01 0:00 ` H.J. Lu 0 siblings, 1 reply; 5+ messages in thread From: Peter Collingbourne via gnu-gabi @ 2017-01-01 0:00 UTC (permalink / raw) To: gnu-gabi; +Cc: Rafael Ávila de Espíndola, Rui Ueyama Any objections to this? Peter On Wed, Jun 7, 2017 at 8:29 PM, Peter Collingbourne <pcc@google.com> wrote: > Hi, > > I am working on a feature in LLVM which will require a special section > type for passing information between the compiler and the linker. > > I see [1] that binutils has defined section types in the range > 0x6fff4700..0x6fff47ff, where presumably the 0x47 ('G') stands for > GNU. In a similar fashion I would like to have the range > 0x6fff4c00..0x6fff4cff reserved for LLVM. > > Thanks, > Peter > > [1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=elfcpp/elfcpp.h;h=cce40d41dedb281c2d8f41135250c2cc39162469;hb=HEAD#l369 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Reserving a section type range for LLVM 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi @ 2017-01-01 0:00 ` H.J. Lu 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi 0 siblings, 1 reply; 5+ messages in thread From: H.J. Lu @ 2017-01-01 0:00 UTC (permalink / raw) To: Peter Collingbourne Cc: gnu-gabi, Rafael Ávila de Espíndola, Rui Ueyama On Wed, Jun 14, 2017 at 11:03 AM, Peter Collingbourne via gnu-gabi <gnu-gabi@sourceware.org> wrote: > Any objections to this? > > Peter > > On Wed, Jun 7, 2017 at 8:29 PM, Peter Collingbourne <pcc@google.com> wrote: >> Hi, >> >> I am working on a feature in LLVM which will require a special section >> type for passing information between the compiler and the linker. >> >> I see [1] that binutils has defined section types in the range >> 0x6fff4700..0x6fff47ff, where presumably the 0x47 ('G') stands for >> GNU. In a similar fashion I would like to have the range >> 0x6fff4c00..0x6fff4cff reserved for LLVM. >> >> Thanks, >> Peter >> >> [1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=elfcpp/elfcpp.h;h=cce40d41dedb281c2d8f41135250c2cc39162469;hb=HEAD#l369 There are: #define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* incremental build data */ #define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* Object attributes */ #define SHT_GNU_HASH 0x6ffffff6 /* GNU style symbol hash table */ #define SHT_GNU_LIBLIST 0x6ffffff7 /* List of prelink dependencies */ 0x6fff4700 to 0x6fffffff may be used for GNU section types. We can carve out 0x6fff4c00..0x6fff4cff for LLVM. -- H.J. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Reserving a section type range for LLVM 2017-01-01 0:00 ` H.J. Lu @ 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi 2017-01-01 0:00 ` H.J. Lu 0 siblings, 1 reply; 5+ messages in thread From: Peter Collingbourne via gnu-gabi @ 2017-01-01 0:00 UTC (permalink / raw) To: H.J. Lu; +Cc: gnu-gabi, Rafael Ávila de Espíndola, Rui Ueyama On Wed, Jun 14, 2017 at 11:12 AM, H.J. Lu <hjl.tools@gmail.com> wrote: > On Wed, Jun 14, 2017 at 11:03 AM, Peter Collingbourne via gnu-gabi > <gnu-gabi@sourceware.org> wrote: >> Any objections to this? >> >> Peter >> >> On Wed, Jun 7, 2017 at 8:29 PM, Peter Collingbourne <pcc@google.com> wrote: >>> Hi, >>> >>> I am working on a feature in LLVM which will require a special section >>> type for passing information between the compiler and the linker. >>> >>> I see [1] that binutils has defined section types in the range >>> 0x6fff4700..0x6fff47ff, where presumably the 0x47 ('G') stands for >>> GNU. In a similar fashion I would like to have the range >>> 0x6fff4c00..0x6fff4cff reserved for LLVM. >>> >>> Thanks, >>> Peter >>> >>> [1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=elfcpp/elfcpp.h;h=cce40d41dedb281c2d8f41135250c2cc39162469;hb=HEAD#l369 > > There are: > > #define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* incremental build data */ > #define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* Object attributes */ > #define SHT_GNU_HASH 0x6ffffff6 /* GNU style symbol hash table */ > #define SHT_GNU_LIBLIST 0x6ffffff7 /* List of prelink dependencies */ > > 0x6fff4700 to 0x6fffffff may be used for GNU section types. We can carve > out 0x6fff4c00..0x6fff4cff for LLVM. Thanks, sounds good. Where would be the best place to document this? Should I send a pull request to https://github.com/hjl-tools/linux-abi ? Peter ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Reserving a section type range for LLVM 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi @ 2017-01-01 0:00 ` H.J. Lu 0 siblings, 0 replies; 5+ messages in thread From: H.J. Lu @ 2017-01-01 0:00 UTC (permalink / raw) To: Peter Collingbourne Cc: gnu-gabi, Rafael Ávila de Espíndola, Rui Ueyama On Wed, Jun 14, 2017 at 11:20 AM, Peter Collingbourne <pcc@google.com> wrote: > On Wed, Jun 14, 2017 at 11:12 AM, H.J. Lu <hjl.tools@gmail.com> wrote: >> On Wed, Jun 14, 2017 at 11:03 AM, Peter Collingbourne via gnu-gabi >> <gnu-gabi@sourceware.org> wrote: >>> Any objections to this? >>> >>> Peter >>> >>> On Wed, Jun 7, 2017 at 8:29 PM, Peter Collingbourne <pcc@google.com> wrote: >>>> Hi, >>>> >>>> I am working on a feature in LLVM which will require a special section >>>> type for passing information between the compiler and the linker. >>>> >>>> I see [1] that binutils has defined section types in the range >>>> 0x6fff4700..0x6fff47ff, where presumably the 0x47 ('G') stands for >>>> GNU. In a similar fashion I would like to have the range >>>> 0x6fff4c00..0x6fff4cff reserved for LLVM. >>>> >>>> Thanks, >>>> Peter >>>> >>>> [1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=elfcpp/elfcpp.h;h=cce40d41dedb281c2d8f41135250c2cc39162469;hb=HEAD#l369 >> >> There are: >> >> #define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* incremental build data */ >> #define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* Object attributes */ >> #define SHT_GNU_HASH 0x6ffffff6 /* GNU style symbol hash table */ >> #define SHT_GNU_LIBLIST 0x6ffffff7 /* List of prelink dependencies */ >> >> 0x6fff4700 to 0x6fffffff may be used for GNU section types. We can carve >> out 0x6fff4c00..0x6fff4cff for LLVM. > > Thanks, sounds good. > > Where would be the best place to document this? Should I send a pull > request to https://github.com/hjl-tools/linux-abi ? > It sounds a good idea. Can you send me a patch to add a section to describe all these existing OS specific section types, plus LLVM ones? Thanks. -- H.J. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2017-06-14 18:46 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2017-01-01 0:00 Reserving a section type range for LLVM Peter Collingbourne via gnu-gabi 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi 2017-01-01 0:00 ` H.J. Lu 2017-01-01 0:00 ` Peter Collingbourne via gnu-gabi 2017-01-01 0:00 ` H.J. Lu
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