70 lines
1.4 KiB
C++
70 lines
1.4 KiB
C++
#pragma once
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#include <cstdint>
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#include <verilated.h>
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/* https://zipcpu.com/blog/2017/06/21/looking-at-verilator.html */
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template <class TOP> class TB {
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int tick_count;
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int bailout;
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public:
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TOP mod;
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VerilatedContext vc;
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TB(int argc, char *argv[], int _bailout = 0) : mod(), bailout(_bailout), vc() {
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vc.commandArgs(argc, argv);
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vc.traceEverOn(true);
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mod.clk = 0;
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tick_count = 0;
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}
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virtual ~TB() {
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mod.final();
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}
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virtual void run_clock() {
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mod.clk = !mod.clk;
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mod.eval();
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vc.timeInc(1);
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mod.clk = !mod.clk;
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mod.eval();
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vc.timeInc(1);
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tick_count++;
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if (bailout > 0 && tick_count >= bailout)
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exit(1);
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}
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};
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static inline void _assert(const char *file, int line, const char *exp, bool ev, const char *fmt, ...) {
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if (!ev) {
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va_list va;
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va_start(va, fmt);
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fprintf(stderr, "%s:%d: assertion failed: %s\n", file, line, exp);
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vfprintf(stderr, fmt, va);
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fprintf(stderr, "\n");
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va_end(va);
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exit(1);
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}
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}
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#define STRINGIFY(s) #s
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/* ,##__VA_ARGS__ is a GNU C extension */
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#define my_assert(e, fmt, ...) _assert(__FILE__, __LINE__, STRINGIFY(e), (e), fmt ,##__VA_ARGS__)
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template<typename V>
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static inline V sign_extend(V x, unsigned len) {
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/* if high bit is 1 */
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if (x >> (len - 1) & 1) {
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V mask = (1 << len) - 1;
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return ~mask | x;
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} else {
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return x;
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}
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}
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#define MASK(x,v) ((x) & ((1 << (v)) - 1))
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template<typename V>
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static inline V mask_extend(V x, unsigned len) {
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return sign_extend<V>(MASK(x,len), len);
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}
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