Vector Unit; Memory Region Attributes - Red Hat ENTERPRISE LINUX 3 - DEBUGGING WITH GDB Manual

Chapter 10. Examining Data
10.11. Floating point hardware
Depending on the configuration, gdb may be able to give you more information about the status of the
floating point hardware.
info float
Display hardware-dependent information about the floating point unit. The exact contents and
layout vary depending on the floating point chip. Currently,
ARM and x86 machines.

10.12. Vector Unit

Depending on the configuration, gdb may be able to give you more information about the status of the
vector unit.
info vector
Display information about the vector unit. The exact contents and layout vary depending on the
hardware.

10.13. Memory region attributes

Memory region attributes allow you to describe special handling required by regions of your target's
memory. gdb uses attributes to determine whether to allow certain types of memory accesses; whether
to use specific width accesses; and whether to cache target memory.
Defined memory regions can be individually enabled and disabled. When a memory region is disabled,
gdb uses the default attributes when accessing memory in that region. Similarly, if no memory regions
have been defined, gdb uses the default attributes when accessing all memory.
When a memory region is defined, it is given a number to identify it; to enable, disable, or remove a
memory region, you specify that number.
mem
lower upper attributes
Define memory region bounded by
== 0 is a special case: it is treated as the the target's maximum memory address. (0xffff
upper
on 16 bit targets, 0xffffffff on 32 bit targets, etc.)
delete mem ...
nums
Remove memory regions
disable mem
nums
Disable memory regions
again later.
enable mem ...
nums
Enable memory regions
...
lower
. . . .
nums
...
. . . . A disabled memory region is not forgotten. It may be enabled
nums
. . . .
nums
info float
and with attributes
upper
is supported on the
. . . . Note that
attributes
81