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add XCOFF node

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Jim Kingdon 1993-03-19 18:25:16 +00:00
parent 52f8e6a0ab
commit 9729ef2206
2 changed files with 35 additions and 15 deletions
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4
gdb/doc/ChangeLog
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@ -1,3 +1,7 @@
Fri Mar 19 10:23:34 1993 Jim Kingdon (kingdon@cygnus.com)
* gdbint.texinfo: Add XCOFF node.
Mon Mar 8 15:52:18 1993 John Gilmore (gnu@cygnus.com)
* gdb.texinfo: Add `set print max-symbolic-offset' doc.

46
gdb/doc/gdbint.texinfo
View file

@ -90,7 +90,7 @@ GDB as you discover it (or as you design changes to GDB).
* Target Conditionals:: What features exist in the target
* Native Conditionals:: Conditionals for when host and target are same
* Obsolete Conditionals:: Conditionals that don't exist any more
* XCOFF:: The Object file format used on IBM's RS/6000
@end menu
@node README
@ -1701,16 +1701,6 @@ infrun.c
defs.h
@item PS_REGNUM
parse.c
@item PTRACE_ARG3_TYPE
inferior.h
@item PTRACE_FP_BUG
mach386-xdep.c
@item PT_ATTACH
hppabsd-xdep.c
@item PT_DETACH
hppabsd-xdep.c
@item PT_KILL
infptrace.c
@item PUSH_ARGUMENTS
valops.c
@item PYRAMID_CONTROL_FRAME_DEBUGGING
@ -2292,10 +2282,6 @@ infrun.c
defs.h
@item PS_REGNUM
parse.c
@item PTRACE_ARG3_TYPE
inferior.h
@item PTRACE_FP_BUG
mach386-xdep.c
@item PUSH_ARGUMENTS
valops.c
@item REGISTER_BYTES
@ -2497,6 +2483,11 @@ this pointer. It examines the current state of the machine as needed.
Defines the format for the name of a @file{/proc} device. Should be
defined in @file{nm.h} @emph{only} in order to override the default
definition in @file{procfs.c}.
@item PTRACE_FP_BUG
mach386-xdep.c
@item PTRACE_ARG3_TYPE
The type of the third argument to the @code{ptrace} system call, if it exists
and is different from @code{int}.
@item REGISTER_U_ADDR
Defines the offset of the registers in the ``u area''; @pxref{Host}.
@item USE_PROC_FS
@ -2537,5 +2528,30 @@ and deleted from all of GDB's config files.
Any @file{@var{foo}-xdep.c} file that references STACK_END_ADDR
is so old that it has never been converted to use BFD. Now that's old!
@end table
@node XCOFF
@chapter The XCOFF Object File Format
The IBM RS/6000 running AIX uses an object file format called xcoff.
The COFF sections, symbols, and line numbers are used, but debugging
symbols are dbx-style stabs whose strings are located in the
@samp{.debug} section (rather than the string table). Files are
indicated with a @samp{C_FILE} symbol (.file) which is analogous to
@samp{N_SO}; include files are delimited with @samp{C_BINCL} (.bi) and
@samp{C_EINCL} (.ei) which correspond to @samp{N_SOL} rather than Sun's
@samp{N_BINCL}. The values of the @samp{C_BINCL} and @samp{C_EINCL}
symbols are offsets into the executable file which point to the
beginning and the end of the portion of the linetable which correspond
to this include file (warning: C_EINCL is @emph{inclusive} not exclusive
like most end of something pointers). Other differences from standard
stabs include the use of negative type numbers for builtin types.
The shared library scheme has a nice clean interface for figuring out
what shared libraries are in use, but the catch is that everything which
refers to addresses (symbol tables and breakpoints at least) needs to be
relocated for both shared libraries and the main executable. At least
using the standard mechanism this can only be done once the program has
been run (or the core file has been read).
@contents
@bye