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* stabs.texinfo (Include Files): Document the values the SunOS4

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linker creates for N_BINCL/N_EINCL/N_EXCL stabs.
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Ian Lance Taylor 1995-12-13 17:36:52 +00:00
parent 3920d9c924
commit 120e5e8912
2 changed files with 17 additions and 6 deletions
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5
gdb/doc/ChangeLog
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@ -1,3 +1,8 @@
Wed Dec 13 12:35:28 1995 Ian Lance Taylor <ian@cygnus.com>
* stabs.texinfo (Include Files): Document the values the SunOS4
linker creates for N_BINCL/N_EINCL/N_EXCL stabs.
Fri Dec 8 21:08:44 1995 Fred Fish <fnf@cygnus.com>
* gdbint.texinfo (Releases): Change gdb.tar.Z to gdb.tar.gz.

18
gdb/doc/stabs.texinfo
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@ -463,11 +463,10 @@ the start of this one. To specify the main source file again, use an
@findex N_EXCL
The @code{N_BINCL} approach works as follows. An @code{N_BINCL} symbol
specifies the start of an include file. In an object file, only the
string is significant; the Sun linker puts data into some of the
other fields. The end of the include file is marked by an
@code{N_EINCL} symbol (which has no string field). In an object
file, there is no significant data in the @code{N_EINCL} symbol; the Sun
linker puts data into some of the fields. @code{N_BINCL} and
string is significant; the Sun linker puts data into some of the other
fields. The end of the include file is marked by an @code{N_EINCL}
symbol (which has no string field). In an object file, there is no
significant data in the @code{N_EINCL} symbol. @code{N_BINCL} and
@code{N_EINCL} can be nested.
If the linker detects that two source files have identical stabs between
@ -476,7 +475,14 @@ for a header file), then it only puts out the stabs once. Each
additional occurance is replaced by an @code{N_EXCL} symbol. I believe
the Sun (SunOS4, not sure about Solaris) linker is the only one which
supports this feature.
@c What do the fields of N_EXCL contain? -djm
The SunOS4 linker sets the value of a @code{N_BINCL} symbol to the total
of all the characters in the stabs strings included in the header file,
omitting the file number. The value of an @code{N_EXCL} symbol is the
same as the value of the @code{N_BINCL} symbol it replaces. I do not
know if this information is used by anything. The @code{N_EINCL} value,
and the values of the other and description fields for all three, appear
to always be zero.
@findex C_BINCL
@findex C_EINCL