chatr_pa.1 (2010 09)

c
chatr_pa(1)
PA-RISC Systems Only
chatr_pa(1)
RISC 64-bit FORMAT 2 command.)
+z Enable lazy swap on all data segments (using PA-RISC 32-bit
chatr or PA-RISC 64-bit
chatr FORMAT 1) or on a specific segment (using PA-RISC 64-bit ELF
chatr FOR-
MAT 2). May not be used with non-data segments.
-z Enable null pointer dereference trap. Run-time dereference of null pointers will produce
a SIGSEGV signal. (This is the complement of the
-Z option.)
-Z Disable null pointer dereference trap. (This is the complement of the
-z option.)
Options For PA-RISC 32-bit SOM chatr Only
-M Change file from EXEC_MAGIC to
SHMEM_MAGIC. (This option is an interim solution
until 64-bit addressability is available with a true 64-bit kernel. See chatr and Magic
Numbers and Using SHMEM_MAGIC below.)
-N Change file from SHMEM_MAGIC to EXEC_MAGIC
. (This option is an interim solution
until 64-bit addressability is available with a true 64-bit kernel. See chatr and Magic
Numbers below.)
+gstbuckets size
Request a particular number of buckets per entry using the global symbol table hash
mechanism. The value can vary between 1 and MAXINT. The default value is 3. Use
this option with +gst enable.
+plabel_cache flag
Control the use of the plabel caching mechanism. The flags enable and disable
turn this request on and off, respectively. The default is
disable. Use this option with
+gst enable.
This option is effective with C++. In C++ applications, the dynamic loader needs to
repetitively access PLABEL information (import stub). In order to make this access fas-
ter, the dynamic loader uses the global symbol table structure to also contain PLABEL
entries. This behavior is enabled when the PLABEL_CACHE flag is set in the
dl_header structure (enabled ld +plabel_cache enable a.out
or chatr
+plabel_cache enable a.out).
+q3p flag Control the flag bit setting to indicate how 32-bit processes use the third quadrant as
data space.
The
enable flag sets the flag bit to indicate that 32-bit processes use the third quadrant
as a private data space. By setting the bit, the private data space increases from 1.9GB
to 2.85GB for 32-bit processes.
The
disable flag unsets the bit, which returns the third quadrant to the default state,
in which it is used for shared memory.
This flag mechanism differs from how to set usage for the first and second quadrants. Set
these values by using the magic number of the executable. (See the
-M and -N options.)
See the Large Private Data Space section below for more details and compatibility issues.
+q4p flag Control the flag bit setting to indicate how 32-bit processes use the third and fourth qua-
drant as data space.
The
enable flag sets the flag bit to indicate that 32-bit processes use the fourth qua-
drant as a private data space. By setting the +q4p flag bit, the private data space
increases from 1.9GB to 3.8GB for 32-bit processes. When you set the fourth quadrant
for private data space, the third quadrant is automatically set for use as private data
space, ignoring the current +q3p value.
The
disable flag unsets the flag bit, which returns the fourth quadrant to the default
state, in which it is used for shared memory. With +q4p disable, the value of the
+q3p flag controls whether the third quadrant is used as a private data space or for
shared memory.
This flag mechanism differs from how to set usage for the first and second quadrants. Set
these values by using the magic number of the executable. (See the
-M and -N options.)
See the Large Private Data Space section below for more details and compatibility issues.
HP-UX 11i Version 3: September 2010 − 3 − Hewlett-Packard Company 3