get_bd_addr_segs - 2020.2 English

Get a list of segments

Syntax

get_bd_addr_segs [‑regexp] [‑hierarchical] [‑filter <arg>]
    [‑of_objects <args>] [‑excluded] [‑addressed] [‑unaddressed]
    [‑addressing] [‑addressables] [‑quiet] [‑verbose] [<patterns>]

Returns

List of segment objects, "" if failed.

Usage

Name	Description
`[-regexp]`	Patterns are full regular expressions
`[-hierarchical]`	Hierarchical cells included
`[-filter]`	Filter list with expression
`[-of_objects]`	Get segments of these segments, interfaces, or registers
`[-excluded]`	Get excluded mapped segments -of_objects
`[-addressed]`	Get addressed segments of given -of_objects
`[-unaddressed]`	Get unaddressed segments of given objects
`[-addressing]`	Get addressing segments of given -of_objects
`[-addressables]`	Get addressable segments of given -of_objects
`[-quiet]`	Ignore command errors
`[-verbose]`	Suspend message limits during command execution
`[<patterns>]`	Match engine names against patterns Default: *

Description

Get a list of address segments in the current IP integrator subsystem design.

Note: To improve memory and performance, the get_* commands return a container list of a single type of objects (e.g. cells, nets, pins, or ports). You can add new objects to the list (using lappend for instance), but you can only add the same type of object that is currently in the list. Adding a different type of object, or string, to the list is not permitted and will result in a Tcl error.

Arguments

-regexp - (Optional) Specifies that the search <patterns> are written as regular expressions. Both search <patterns> and -filter expressions must be written as regular expressions when this argument is used. Xilinx regular expression Tcl commands are always anchored to the start of the search string. You can add ".*" to the beginning or end of a search string to widen the search to include a substring. See http://perldoc.perl.org/perlre.html for help with regular expression syntax.

Note: The Tcl built-in command regexp is not anchored, and works as a standard Tcl command. For more information refer to http://www.tcl.tk/man/tcl8.5/TclCmd/regexp.htm.

-hierarchical - (Optional) Get address segments from all levels of the IP integrator subsystem design hierarchy, or current instance. Without this argument, the command will only get address segments from the top of the subsystem design hierarchy. When using -hierarchical, the search pattern should not contain a hierarchy separator because the search pattern is applied at each level of the hierarchy, not to the full hierarchical name. For instance, searching for U1/* searches each level of the hierarchy for objects with U1/ in the name. This may not return the intended results.

Note: When used with -regexp, the specified search string is matched against the full hierarchical name, and the U1/* search pattern will work as intended.

-filter <args> - (Optional) Filter the results list with the specified expression. The -filter argument filters the list of objects returned by get_bd_addr_segs based on property values on the address segments. You can find the properties on an object with the report_property or list_property commands. In the case of the IP integrator address segments object, "OFFSET", "RANGE" and "USAGE" are some of the properties that can be used to filter results.

The filter search pattern should be quoted to avoid having to escape special characters that may be found in net, pin, or cell names, or other properties. String matching is case-sensitive and is always anchored to the start and to the end of the search string. The wildcard “*” character can be used at the beginning or at the end of a search string to widen the search to include a substring of the property value.

Note: The filter returns an object if a specified property exists on the object, and the specified pattern matches the property value on the object. In the case of the "*" wildcard character, this will match a property with a defined value of "".

For string comparison, the specific operators that can be used in filter expressions are "equal" (==), "not-equal" (!=), "match" (=~), and "not-match" (!~). Numeric comparison operators <, >, <=, and >= can also be used. Multiple filter expressions can be joined by AND and OR (&& and ||). The following gets input pins that do NOT contain the “RESET” substring within their name:

get_pins * -filter {DIRECTION == IN && NAME !~ "*RESET*"}

Boolean (bool) type properties can be directly evaluated in filter expressions as true or not true:

-filter {IS_PRIMITIVE && !IS_LOC_FIXED}

-of_objects <arg> - (Optional) Get the address segments that are assigned to the specified address spaces, as returned by the get_bd_addr_spaces command, or of cells or interface pins, as returned by get_bd_cells and get_bd_intf_pins. You can also get slave address_segments of associated master address segments using get_bd_addr_segs.

Note: The -of_objects option requires objects to be specified using the get_* commands, such as get_cells or get_pins, rather than specifying objects by name. In addition, -of_objects cannot be used with a search <pattern>.

-excluded - (Optional) Get the address segments that are excluded from the address spaces specified by the -of_objects option.

-addressing - (Optional) Get addressing segments of the address spaces specified by the -of_objects option. This reports all available segments of the address spaces.

-addressed - (Optional) Get addressed segments of the address spaces specified by the -of_objects option. This reports the segments of the address spaces that are used.

-addressables - (Optional) Get addressable segments, that are not already occupied by address segments, of the address spaces of the objects specified by the -of_objects option.

Note: -addressables, -addressed, and -addressing are mutually exclusive, and cannot be used together.

-quiet - (Optional) Execute the command quietly, returning no messages from the command. The command also returns TCL_OK regardless of any errors encountered during execution.

Note: Any errors encountered on the command-line, while launching the command, will be returned. Only errors occurring inside the command will be trapped.

-verbose - (Optional) Temporarily override any message limits and return all messages from this command.

Note: Message limits can be defined with the set_msg_config command.

<patterns> - (Optional) Match address segments against the specified patterns. The default pattern is the wildcard '*' which gets a list of all address segments in the current IP subsystem design. More than one pattern can be specified to find multiple address segments based on different search criteria.

Note: You must enclose multiple search patterns in braces {} to present the list as a single element.

Examples

The following example gets the address segments of the specified address spaces:

get_bd_addr_segs -of_objects [get_bd_addr_spaces -of_objects \  
[get_bd_cells /microblaze_1]]  
/microblaze_1/Data/SEG1   
/microblaze_1/Data/SEG3   
/microblaze_1/Instruction/SEG2

Note: If there are no objects matching the pattern you will get a warning.