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Print a better error message for the optional system tasks/funcs 

This patch adds better error messages (compiletf) for the optional
system tasks and functions (Annex C 1364-2005). Doing this also
makes calling them fail more gracefully (it is no longer a RE).
This commit is contained in:
Cary R 2009-04-09 14:56:19 -07:00 committed by Stephen Williams
parent dff535923f
commit ddaba5b017
1 changed files with 94 additions and 0 deletions
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94
vpi/sys_icarus.c
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@ -64,6 +64,21 @@ static PLI_INT32 function_not_implemented_compiletf(PLI_BYTE8* name)
return 0;
}
/*
* This is used to warn the user that the specified optional system
* task/function is not available (from Annex C 1364-2005).
*/
static PLI_INT32 missing_optional_compiletf(PLI_BYTE8* name)
{
vpiHandle callh = vpi_handle(vpiSysTfCall, 0);
vpi_printf("%s:%d: SORRY: %s() is not available in Icarus verilog.\n",
vpi_get_str(vpiFile, callh), (int)vpi_get(vpiLineNo, callh),
name);
vpi_control(vpiFinish, 1);
return 0;
}
/*
* Register the function with Verilog.
*/
@ -217,4 +232,83 @@ void sys_special_register(void)
tf_data.tfname = "$ferror";
tf_data.user_data = "$ferror";
vpi_register_systf(&tf_data);
/* The following optional system tasks/functions are not implemented
* in Icarus Verilog (from Annex C 1364-2005). */
tf_data.type = vpiSysTask;
tf_data.calltf = 0;
tf_data.sizetf = 0;
tf_data.compiletf = missing_optional_compiletf;
tf_data.tfname = "$input";
tf_data.user_data = "$input";
vpi_register_systf(&tf_data);
tf_data.tfname = "$key";
tf_data.user_data = "$key";
vpi_register_systf(&tf_data);
tf_data.tfname = "$nokey";
tf_data.user_data = "$nokey";
vpi_register_systf(&tf_data);
tf_data.tfname = "$list";
tf_data.user_data = "$list";
vpi_register_systf(&tf_data);
tf_data.tfname = "$log";
tf_data.user_data = "$log";
vpi_register_systf(&tf_data);
tf_data.tfname = "$nolog";
tf_data.user_data = "$nolog";
vpi_register_systf(&tf_data);
tf_data.tfname = "$save";
tf_data.user_data = "$save";
vpi_register_systf(&tf_data);
tf_data.tfname = "$restart";
tf_data.user_data = "$restart";
vpi_register_systf(&tf_data);
tf_data.tfname = "$incsave";
tf_data.user_data = "$incsave";
vpi_register_systf(&tf_data);
tf_data.tfname = "$scope";
tf_data.user_data = "$scope";
vpi_register_systf(&tf_data);
tf_data.tfname = "$showscopes";
tf_data.user_data = "$showscopes";
vpi_register_systf(&tf_data);
tf_data.tfname = "$showvars";
tf_data.user_data = "$showvars";
vpi_register_systf(&tf_data);
tf_data.tfname = "$sreadmemb";
tf_data.user_data = "$sreadmemb";
vpi_register_systf(&tf_data);
tf_data.tfname = "$sreadmemh";
tf_data.user_data = "$sreadmemh";
vpi_register_systf(&tf_data);
/* Optional functions. */
tf_data.type = vpiSysFunc;
tf_data.sysfunctype = vpiIntFunc;
tf_data.tfname = "$countdrivers";
tf_data.user_data = "$countdrivers";
vpi_register_systf(&tf_data);
tf_data.tfname = "$getpattern";
tf_data.user_data = "$getpattern";
vpi_register_systf(&tf_data);
tf_data.tfname = "$scale";
tf_data.user_data = "$scale";
vpi_register_systf(&tf_data);
}