diff options
Diffstat (limited to 'src/sim/power/mathexpr_powermodel.cc')
-rw-r--r-- | src/sim/power/mathexpr_powermodel.cc | 59 |
1 files changed, 54 insertions, 5 deletions
diff --git a/src/sim/power/mathexpr_powermodel.cc b/src/sim/power/mathexpr_powermodel.cc index 7bd218659..13d225ee3 100644 --- a/src/sim/power/mathexpr_powermodel.cc +++ b/src/sim/power/mathexpr_powermodel.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016 ARM Limited + * Copyright (c) 2016-2017 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -46,7 +46,7 @@ #include "sim/sim_object.hh" MathExprPowerModel::MathExprPowerModel(const Params *p) - : PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st) + : PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st), failed(false) { // Calculate the name of the object we belong to std::vector<std::string> path; @@ -65,9 +65,51 @@ MathExprPowerModel::startup() for (auto & i: Stats::statsList()) if (i->name.find(basename) == 0) stats_map[i->name.substr(basename.size())] = i; + + tryEval(st_expr); + const bool st_failed = failed; + + tryEval(dyn_expr); + const bool dyn_failed = failed; + + if (st_failed || dyn_failed) { + const auto *p = dynamic_cast<const Params *>(params()); + assert(p); + + fatal("Failed to evaluate power expressions:\n%s%s%s\n", + st_failed ? p->st : "", + st_failed && dyn_failed ? "\n" : "", + dyn_failed ? p->dyn : ""); + } } double +MathExprPowerModel::eval(const MathExpr &expr) const +{ + const double value = tryEval(expr); + + // This shouldn't happen unless something went wrong the equations + // were verified in startup(). + panic_if(failed, "Failed to evaluate power expression '%s'\n", + expr.toStr()); + + return value; +} + +double +MathExprPowerModel::tryEval(const MathExpr &expr) const +{ + failed = false; + const double value = expr.eval( + std::bind(&MathExprPowerModel::getStatValue, + this, std::placeholders::_1) + ); + + return value; +} + + +double MathExprPowerModel::getStatValue(const std::string &name) const { using namespace Stats; @@ -77,12 +119,19 @@ MathExprPowerModel::getStatValue(const std::string &name) const return _temp; // Try to cast the stat, only these are supported right now - Info *info = stats_map.at(name); + const auto it = stats_map.find(name); + if (it == stats_map.cend()) { + warn("Failed to find stat '%s'\n", name); + failed = true; + return 0; + } + + const Info *info = it->second; - ScalarInfo *si = dynamic_cast<ScalarInfo*>(info); + auto si = dynamic_cast<const ScalarInfo *>(info); if (si) return si->value(); - FormulaInfo *fi = dynamic_cast<FormulaInfo*>(info); + auto fi = dynamic_cast<const FormulaInfo *>(info); if (fi) return fi->total(); |