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Support tracing through --hierarchical/--lib-create libraries (#3200).

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This commit is contained in:
Wilson Snyder
2021-11-27 17:07:27 -05:00
parent 833686446c
commit 04e0c7e4f1
10 changed files with 6654 additions and 29 deletions
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src/V3ProtectLib.cpp
+29
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@@ -124,6 +124,11 @@ private:
addComment(txtp, fl, "Evaluates the library module's final process");
}
void traceComment(AstTextBlock* txtp, FileLine* fl) {
addComment(txtp, fl, "Enables the library module's tracing");
addComment(txtp, fl, "Only usable when used with called from Verilator");
}
void createSvFile(FileLine* fl, AstNodeModule* modp) {
// Comments
AstTextBlock* const txtp = new AstTextBlock(fl);
@@ -197,6 +202,18 @@ private:
txtp->addText(fl, "import \"DPI-C\" function void " + m_libName
+ "_protectlib_final(chandle handle__V);\n\n");
if (v3Global.opt.trace() && !v3Global.opt.protectIds()) {
txtp->addText(fl, "`ifdef verilator\n");
traceComment(txtp, fl);
txtp->addText(fl, "import \"DPI-C\" function void " + m_libName
+ "_protectlib_trace(chandle handle__V, "
"chandle tfp, int levels, int options)"
+ " /*verilator trace_init_task*/;\n");
// Note V3EmitCModel.cpp requires the name "handle__V".
txtp->addText(fl, "`endif // verilator\n");
txtp->addText(fl, "\n");
}
// Local variables
// Avoid tracing handle, as it is not a stable value, so breaks vcddiff
// Likewise other internals aren't interesting to the user
@@ -387,6 +404,18 @@ private:
txtp->addText(fl, /**/ "delete handlep__V;\n");
txtp->addText(fl, "}\n\n");
if (v3Global.opt.trace() && !v3Global.opt.protectIds()) {
traceComment(txtp, fl);
txtp->addText(fl, "void " + m_libName
+ "_protectlib_trace(void* vhandlep__V, void* tfp, int levels, "
"int options) {\n");
castPtr(fl, txtp);
txtp->addText(
fl,
/**/ "handlep__V->trace(static_cast<VerilatedVcdC*>(tfp), levels, options);\n");
txtp->addText(fl, "}\n\n");
}
txtp->addText(fl, "}\n");
m_cfilep->tblockp(txtp);
}