Get one or more DRC/METHODOLOGY/CDC/LINT message waivers
Syntax
get_waivers [‑type <arg>] [‑id <arg>] [‑of_objects <args>] [‑regexp]
[‑filter <arg>] [‑nocase] [‑quiet] [‑verbose] [<patterns>]
Returns
Waivers
Usage
Name | Description |
---|---|
[-type]
|
Type of waiver - DRC, METHODOLOGY, CDC, LINT, ALL |
[-id]
|
ID of the DRC/METHODOLOGY/CDC/LINT message being waived |
[-of_objects]
|
List of objects (cells, nets, pins, sites, etc.) for which DRC/METHODLOGY/CDC/LINT waiver(s) were set |
[-regexp]
|
Patterns are full regular expressions |
[-filter]
|
Filter list with expression |
[-nocase]
|
Perform case-insensitive matching (valid only when -regexp specified) |
[-quiet]
|
Ignore command errors |
[-verbose]
|
Suspend message limits during command execution |
[<patterns>]
|
Match waiver names against patterns Default: * Values: The default search pattern is the wildcard *, or .* when -regexp is specified. |
Description
The create_waiver
command lets you select individual DRC, methodology, or CDC violations or rule checks that can be waived for a design, letting you move forward in the design flow. The get_waivers
command lets you query the defined waiver objects in the current design.
A waiver must be specified for an individual DRC or methodology violation, or for a specific DRC or methodology check, or for a CDC path. The waiver must be assigned to a specific object, or specific violation ID, or for paths using -from/-to
arguments. You can format the get_waivers
command to return the specific types of waivers you are looking for, or waivers associated with specific objects.
You can report the waivers defined in the current design with report_waivers
, and remove waivers from the design using delete_waivers
.
Arguments
-type <arg>
- (Optional) Specifies the type of waiver to get. Currently supports DRC, METHODOLOGY, and CDC.
-id <arg>
- (Optional) Specifies the ID of the check or violation associated with the waiver.
-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.
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.
-nocase
- (Optional) Perform case-insensitive matching when a pattern has been specified. This argument applies to the use of -regexp
only.
-filter
<args> - (Optional) Filter the results list with the specified expression. The -filter
argument filters the list of objects returned by get_waivers
based on property values on the waivers. You can find the properties on an object with the report_property
or list_property
commands. In the case of the waivers object, "NAME", "OBJECT_COUNTS" and "TYPE" are some of the properties that can be used to filter results.
get_pins * -filter {DIRECTION == IN && NAME !~ "*RESET*"}
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 waivers associated with the specified objects (cells, nets, pins, sites, etc.).
-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.
-verbose
- (Optional) Temporarily override any message limits and return all messages from this command.
set_msg_config
command.<patterns> - (Optional) Match waivers against the specified search pattern. The default pattern is the wildcard '*' which gets a list of all waivers in the project.
Examples
This example gets any waivers in the current design:
get_waivers
The following example gets all DRC check waivers:
get_waivers -type DRC *
The following example gets all waivers associated with the specified objects:
get_waivers -of_objects [get_ports {src_in* dest_out*}]