chatr_pa.1 (2010 09)
c
chatr_pa(1)
PA-RISC Systems Only
chatr_pa(1)
and disable, respectively enable and disable use of the embedded path list. However,
you cannot use disable on an ELF (PA-RISC 64-bit) file and a warning message is
issued. See the +s option. You can use the
+b option to enable the embedded path for
filter libraries.
+dbg flag Controls the mapping of shared library text segments privately. The flag values,
enable and disable, toggle the request on and off. When enabled, this allows for
mapping the text segments of shared libraries in a private, writable region. Also, you can
use this feature on individual shared libraries, which makes the text segment mapped
private. If _HP_DLDOPTS contains the string "
-text_private", all shared libraries
are mapped private. You can specify a colon-separated list of shared library base names
with this option, following an equal (
=
) character; for example:
_HP_DLDOPTS="-text_private=libdebug.sl:libdld.2"
When used with +mergeseg enable
, this allows text segments of shared libraries to
be merged.
+es flag Control the ability of user code to execute from stack with the flag values,
enable and
disable. See the Restricting Execute Permission on Stacks section below for additional
information related to security issues.
+gst flag Control whether the global symbol table hash mechanism is used to look up values of
symbol import/export entries. The two flag values,
enable and disable, respectively
enable and disable use of the global symbol table hash mechanism. The default is
dis-
able.
+gstsize size
Request a particular hash array size using the global symbol table hash mechanism. The
value can vary between 1 and MAXINT. The default value is 1103. Use this option with
+gst enable.
+k flag Request kernel assisted branch prediction. The flags enable and disable turn this
request on and off, respectively. (Available with the PA-RISC 64-bit FORMAT 2 com-
mand.)
+l library Indicate that the specified shared library is not subject to run-time path lookup if direc-
tory path lists are provided (see +s and +b).
+mem_check flag
Enable or disable the dynamic loader to automatically preload
librtc.sl and also
maps shared libraries as private. The
librtc.sl library is used to support heap
analysis through GDB.
+mergeseg flag
Controls the shared library segment merging feature. The flag values, enable and dis-
able, toggle this request ON and OFF. See the description of shared library segment
merging in the HP-UX Linker and Libraries User’s Guide. When enabled, all the data
segments of the shared libraries loaded at program startup are merged. This increases
run-time performance by allowing the kernel to use larger size page table entries.
+pd size Request a particular virtual memory page size that should be used for data. Sizes of 4K,
16K, 64K, 256K, 1M, 4M, 16M, 64M, 256M, and L are supported. A size of L will result
in using the largest page size available. The actual page size may vary if the requested
size cannot be fulfilled.
+pi size Request a particular virtual memory page size that should be used for instructions. See
the +pd option for additional information.
+r flag Request static branch prediction when executing this program. The flags enable and
disable turn this request on and off, respectively. (Available with the PA-RISC 64-bit
FORMAT 2 command.)
+rtc flag This is an alias to the chatr +mem_check option.
+s flag Control whether the directory path list specified with the SHLIB_PATH environment
variable can be used to locate shared libraries needed by the program. The two flag
values, enable and disable, respectively enable and disable use of the environment
variable. If both +s and +b are used, their relative order on the command line indi-
cates which path list will be searched first. See the +b option. (Available with the PA-
2 Hewlett-Packard Company − 2 − HP-UX 11i Version 3: September 2010