Added gsystem-verilog gen flag and 4 additional keywords

For future system-verilog additions

compiler.h

@@ -139,6 +139,7 @@ enum { GN_KEYWORDS_1364_1995        = 0x0001,
        GN_KEYWORDS_1364_2001_CONFIG = 0x0004,
        GN_KEYWORDS_1364_2005        = 0x0008,
        GN_KEYWORDS_VAMS_2_3         = 0x0010,
+       GN_KEYWORDS_1800_2005        = 0x0020,
        GN_KEYWORDS_ICARUS           = 0x8000
 };
 extern int lexor_keyword_mask;

driver/main.c

@@ -115,6 +115,7 @@ const char*gen_icarus = "icarus-misc";
 const char*gen_io_range_error = "io-range-error";
 const char*gen_strict_ca_eval = "no-strict-ca-eval";
 const char*gen_verilog_ams = "no-verilog-ams";
+const char*gen_system_verilog = "no-system-verilog";
 
 /* Boolean: true means use a default include dir, false means don't */
 int gen_std_include = 1;
@@ -612,6 +613,9 @@ int process_generation(const char*name)
       else if (strcmp(name,"no-verilog-ams") == 0)
 	    gen_verilog_ams = "no-verilog-ams";
       
+	  else if (strcmp(name,"system-verilog") == 0)
+	    gen_system_verilog = "system-verilog";
+
       else {
 	    fprintf(stderr, "Unknown/Unsupported Language generation "
 		    "%s\n\n", name);
@@ -626,7 +630,8 @@ int process_generation(const char*name)
 		            "    xtypes | no-xtypes\n"
 		            "    icarus-misc | no-icarus-misc\n"
 		            "    io-range-error | no-io-range-error\n"
-                            "    strict-ca-eval | no-strict-ca-eval\n");
+                    "    strict-ca-eval | no-strict-ca-eval\n"
+					"    system-verilog\n");
 	    return 1;
       }
 
@@ -899,6 +904,7 @@ int main(int argc, char **argv)
       fprintf(iconfig_file, "generation:%s\n", gen_strict_ca_eval);
       fprintf(iconfig_file, "generation:%s\n", gen_verilog_ams);
       fprintf(iconfig_file, "generation:%s\n", gen_icarus);
+      fprintf(iconfig_file, "generation:%s\n", gen_system_verilog);
       fprintf(iconfig_file, "warnings:%s\n", warning_flags);
       fprintf(iconfig_file, "out:%s\n", opath);
       if (depfile) fprintf(iconfig_file, "depfile:%s\n", depfile);

lexor_keyword.gperf

@@ -17,10 +17,14 @@ access,		GN_KEYWORDS_VAMS_2_3,	K_access
 acos,		GN_KEYWORDS_VAMS_2_3,	K_acos
 acosh,		GN_KEYWORDS_VAMS_2_3,	K_acosh
 always,		GN_KEYWORDS_1364_1995,	K_always
+always_comb,	GN_KEYWORDS_1800_2005,	K_always_comb
+always_ff,		GN_KEYWORDS_1800_2005,	K_always_ff
+always_latch,	GN_KEYWORDS_1800_2005,	K_always_latch
 analog,		GN_KEYWORDS_VAMS_2_3,	K_analog
 and,		GN_KEYWORDS_1364_1995,	K_and
 asin,		GN_KEYWORDS_VAMS_2_3,	K_asin
 asinh,		GN_KEYWORDS_VAMS_2_3,	K_asinh
+assert,		GN_KEYWORDS_1800_2005,	K_assert
 assign,		GN_KEYWORDS_1364_1995,	K_assign
 atan,		GN_KEYWORDS_VAMS_2_3,	K_atan
 atan2,		GN_KEYWORDS_VAMS_2_3,	K_atan2

main.cc

@@ -91,6 +91,7 @@ bool gn_specify_blocks_flag = true;
 bool gn_io_range_error_flag = true;
 bool gn_strict_ca_eval_flag = false;
 bool gn_verilog_ams_flag = false;
+bool gn_system_verilog_flag = false;
 
 map<string,const char*> flags;
 char*vpi_module_list = 0;
@@ -252,6 +253,9 @@ static void process_generation_flag(const char*gen)
       } else if (strcmp(gen,"no-strict-ca-eval") == 0) {
 	    gn_strict_ca_eval_flag = false;
 
+      } else if (strcmp(gen,"system-verilog") == 0) {
+        gn_system_verilog_flag = true;
+
 	  } else {
       }
 }
@@ -661,6 +665,9 @@ int main(int argc, char*argv[])
       if (gn_cadence_types_flag)
 	    lexor_keyword_mask |= GN_KEYWORDS_ICARUS;
       
+	  if (gn_system_verilog_flag)
+	    lexor_keyword_mask |= GN_KEYWORDS_1800_2005;
+
       if (gn_verilog_ams_flag)
 	    lexor_keyword_mask |= GN_KEYWORDS_VAMS_2_3;
 

parse.y

@@ -241,6 +241,8 @@ static PECallFunction*make_call_function(perm_string tn, PExpr*arg1, PExpr*arg2)
 %token K_wone K_wor K_xnor K_xor
 %token K_Shold K_Speriod K_Srecovery K_Srecrem K_Ssetup K_Swidth K_Ssetuphold
 
+%token K_always_comb K_always_ff K_always_latch K_assert 
+
 %token KK_attribute
 
 %type <flag>    from_exclude