luke
/
iverilog
mirror of https://github.com/steveicarus/iverilog.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Support initializer expression for unpacked array port declarations 

At the moment there are two rules for port declarations. One that allows
the port to be declared as an unpacked array, the other that allows to
specify an initializer expression.

SystemVerilog allows both to be specified in the same port declaration. Add
support for this to the parser.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This commit is contained in:
Lars-Peter Clausen 2022-09-12 22:15:46 +02:00
parent 1ee189630b
commit 3576ba5faa
1 changed files with 9 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
parse.y
View File

@ -4448,10 +4448,13 @@ list_of_port_declarations
;
port_declaration
: attribute_list_opt K_input net_type_or_var_opt data_type_or_implicit IDENTIFIER dimensions_opt
{ Module::port_t*ptmp;
: attribute_list_opt K_input net_type_or_var_opt data_type_or_implicit IDENTIFIER dimensions_opt initializer_opt
{ if ($7)
pform_requires_sv(@7, "Input port default value");
Module::port_t*ptmp;
perm_string name = lex_strings.make($5);
ptmp = pform_module_port_reference(@2, name);
ptmp->default_value = $7;
pform_module_define_port(@2, name, NetNet::PINPUT, $3, $4, $6, nullptr,
$1);
port_declaration_context.port_type = NetNet::PINPUT;
@ -4475,21 +4478,6 @@ port_declaration
delete[]$4;
$$ = ptmp;
}
| attribute_list_opt K_input net_type_or_var_opt data_type_or_implicit IDENTIFIER '=' expression
{ pform_requires_sv(@6, "Default port value");
Module::port_t*ptmp;
perm_string name = lex_strings.make($5);
data_type_t*use_type = $4;
ptmp = pform_module_port_reference(@2, name);
ptmp->default_value = $7;
pform_module_define_port(@2, name, NetNet::PINPUT, $3, use_type,
nullptr, $1);
port_declaration_context.port_type = NetNet::PINPUT;
port_declaration_context.port_net_type = $3;
port_declaration_context.data_type = $4;
delete[]$5;
$$ = ptmp;
}
| attribute_list_opt K_inout net_type_opt data_type_or_implicit IDENTIFIER dimensions_opt
{ Module::port_t*ptmp;
perm_string name = lex_strings.make($5);
@ -4521,7 +4509,7 @@ port_declaration
delete[]$4;
$$ = ptmp;
}
| attribute_list_opt K_output net_type_or_var_opt data_type_or_implicit IDENTIFIER dimensions_opt
| attribute_list_opt K_output net_type_or_var_opt data_type_or_implicit IDENTIFIER dimensions_opt initializer_opt
{ Module::port_t*ptmp;
perm_string name = lex_strings.make($5);
NetNet::Type use_type = $3;
@ -4545,6 +4533,9 @@ port_declaration
port_declaration_context.port_type = NetNet::POUTPUT;
port_declaration_context.port_net_type = use_type;
port_declaration_context.data_type = $4;
if ($7)
pform_make_var_init(@5, name, $7);
delete[]$5;
$$ = ptmp;
}
@ -4563,25 +4554,6 @@ port_declaration
delete[]$4;
$$ = ptmp;
}
| attribute_list_opt K_output net_type_or_var_opt data_type_or_implicit IDENTIFIER '=' expression
{ Module::port_t*ptmp;
perm_string name = lex_strings.make($5);
NetNet::Type use_type = $3;
if (use_type == NetNet::IMPLICIT) {
use_type = NetNet::IMPLICIT_REG;
}
ptmp = pform_module_port_reference(@2, name);
pform_module_define_port(@2, name, NetNet::POUTPUT, use_type, $4,
nullptr, $1);
port_declaration_context.port_type = NetNet::POUTPUT;
port_declaration_context.port_net_type = use_type;
port_declaration_context.data_type = $4;
pform_make_var_init(@5, name, $7);
delete[]$5;
$$ = ptmp;
}
;
/*