Description
Attaches a name to a function, which can then be used with the set_top command to synthesize the function and any functions
called from the specified top-level. This is typically used to synthesize member functions
of a class in C/C++.
Specify the TOP pragma in an active solution, and then use the set_top command with the new name.
Syntax
| Form | Syntax |
|---|---|
| Pragma |
#pragma HLS top
name=<string>
|
| Config File |
syn.directive.top=[OPTIONS] <loc>
name=<string>
|
| Tcl |
set_directive_top [OPTIONS] -name
<string>
|
Place the pragma in the C source within the boundaries of the required location.
#pragma HLS top name=<string>-
name=<string> - Specifies the name to be used by the
set_topcommand.
Options
-
name=<string> - Specifies the name to be used by the
set_topcommand.
Example
Function foo_long_name is designated the
top-level function, and renamed to DESIGN_TOP. After the
pragma is placed in the code, the set_top command must
still be issued from the Tcl command line, or from the top-level specified in the IDE
project settings.
void foo_long_name () {
#pragma HLS top name=DESIGN_TOP
...
}Followed by the set_top DESIGN_TOP command.