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#include <sys/stat.h>
#include <sys/types.h>
#include <stdio.h>
#include <string>
const char *arg_types[][2] = {
{ "{dir} [3:0] {name}", "{name}" }, // 00
{ "{dir} [4:0] {name}", "{name}" }, // 01
{ "{dir} [5:0] {name}", "{name}" }, // 02
{ "{dir} signed [3:0] {name}", "{name}" }, // 03
{ "{dir} signed [4:0] {name}", "{name}" }, // 04
{ "{dir} signed [5:0] {name}", "{name}" } // 05
};
// See Table 5-1 (page 42) in IEEE Std 1364-2005
// for a list of all Verilog oprators.
const char *binary_ops[] = {
"+", // 00
"-", // 01
"*", // 02
// "/",
// "%",
// "**",
">", // 03
">=", // 04
"<", // 05
"<=", // 06
"&&", // 07
"||", // 08
"==", // 09
"!=", // 10
"===", // 11
"!==", // 12
"&", // 13
"|", // 14
"^", // 15
"^~", // 16
"<<", // 17
">>", // 18
"<<<", // 19
">>>", // 20
};
const char *unary_ops[] = {
"+", // 00
"-", // 01
"!", // 02
"~", // 03
"&", // 04
"~&", // 05
"|", // 06
"~|", // 07
"^", // 08
"~^", // 09
};
void strsubst(std::string &str, const std::string &match, const std::string &replace)
{
size_t pos;
while ((pos = str.find(match)) != std::string::npos)
str.replace(pos, match.size(), replace);
}
int main()
{
mkdir("rtl", 0777);
// generate test cases for binary operators
for (int ai = 0; ai < sizeof(arg_types)/sizeof(arg_types[0]); ai++)
for (int bi = 0; bi < sizeof(arg_types)/sizeof(arg_types[0]); bi++)
for (int yi = 0; yi < sizeof(arg_types)/sizeof(arg_types[0]); yi++)
for (int oi = 0; oi < sizeof(binary_ops)/sizeof(binary_ops[0]); oi++)
{
std::string a_decl = arg_types[ai][0];
strsubst(a_decl, "{dir}", "input");
strsubst(a_decl, "{name}", "a");
std::string b_decl = arg_types[bi][0];
strsubst(b_decl, "{dir}", "input");
strsubst(b_decl, "{name}", "b");
std::string y_decl = arg_types[yi][0];
strsubst(y_decl, "{dir}", "output");
strsubst(y_decl, "{name}", "y");
std::string a_ref = arg_types[ai][1];
strsubst(a_ref, "{dir}", "input");
strsubst(a_ref, "{name}", "a");
std::string b_ref = arg_types[bi][1];
strsubst(b_ref, "{dir}", "input");
strsubst(b_ref, "{name}", "b");
std::string y_ref = arg_types[yi][1];
strsubst(y_ref, "{dir}", "output");
strsubst(y_ref, "{name}", "y");
char buffer[1024];
snprintf(buffer, 1024, "rtl/binary_ops_%02d%02d%02d%02d.v", ai, bi, yi, oi);
FILE *f = fopen(buffer, "w");
fprintf(f, "module binary_ops_%02d%02d%02d%02d(a, b, y);\n", ai, bi, yi, oi);
fprintf(f, "%s;\n", a_decl.c_str());
fprintf(f, "%s;\n", b_decl.c_str());
fprintf(f, "%s;\n", y_decl.c_str());
fprintf(f, "assign %s = %s %s %s;\n", y_ref.c_str(),
a_ref.c_str(), binary_ops[oi], b_ref.c_str());
fprintf(f, "endmodule\n");
fclose(f);
}
// generate test cases for unary operators
for (int ai = 0; ai < sizeof(arg_types)/sizeof(arg_types[0]); ai++)
for (int yi = 0; yi < sizeof(arg_types)/sizeof(arg_types[0]); yi++)
for (int oi = 0; oi < sizeof(unary_ops)/sizeof(unary_ops[0]); oi++)
{
std::string a_decl = arg_types[ai][0];
strsubst(a_decl, "{dir}", "input");
strsubst(a_decl, "{name}", "a");
std::string y_decl = arg_types[yi][0];
strsubst(y_decl, "{dir}", "output");
strsubst(y_decl, "{name}", "y");
std::string a_ref = arg_types[ai][1];
strsubst(a_ref, "{dir}", "input");
strsubst(a_ref, "{name}", "a");
std::string y_ref = arg_types[yi][1];
strsubst(y_ref, "{dir}", "output");
strsubst(y_ref, "{name}", "y");
char buffer[1024];
snprintf(buffer, 1024, "rtl/unary_ops_%02d%02d%02d.v", ai, yi, oi);
FILE *f = fopen(buffer, "w");
fprintf(f, "module unary_ops_%02d%02d%02d(a, b, y);\n", ai, yi, oi);
fprintf(f, "%s;\n", a_decl.c_str());
fprintf(f, "%s;\n", y_decl.c_str());
fprintf(f, "assign %s = %s %s;\n", y_ref.c_str(),
unary_ops[oi], a_ref.c_str());
fprintf(f, "endmodule\n");
fclose(f);
}
return 0;
}
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