From fed64a3b3634315bce420b2bc63312c1fa62bb8f Mon Sep 17 00:00:00 2001 From: Steve Reinhardt Date: Mon, 15 Nov 2004 01:56:40 -0500 Subject: Add support for sampled PC profiling to FullCPU. Simple text list of symbol (or address) and count will be dumped to m5prof. if the cpu's pc_sample_interval param is set. SConscript: Add cpu/full_cpu/pc_sample_profile.cc base/callback.hh: Add a comment about MakeCallback. Fix type in another comment. base/loader/symtab.cc: Revamp findNearestSymbol() to provide addresses of both nearest symbols (preceding and following) as well as string for former. Move global definition of debugSymbolTable here too. base/loader/symtab.hh: Revamp findNearestSymbol() to provide addresses of both nearest symbols (preceding and following) as well as string for former. Move global declaration of debugSymbolTable here too. cpu/exetrace.cc: Use new findNearestSymbol() interface for trace symbols. kern/linux/linux_system.cc: sim/system.cc: Remove extern of debugSymbolTable (now in symtab.hh) sim/process.cc: Initialize debugSymbolTable if binary has a symbol table. --HG-- extra : convert_revision : 0b5393dc39c40ac88c953684708f1125da550671 --- base/loader/symtab.cc | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-) (limited to 'base/loader/symtab.cc') diff --git a/base/loader/symtab.cc b/base/loader/symtab.cc index f6abf7e3d..c018ae4f8 100644 --- a/base/loader/symtab.cc +++ b/base/loader/symtab.cc @@ -38,6 +38,8 @@ using namespace std; +SymbolTable *debugSymbolTable = NULL; + bool SymbolTable::insert(Addr address, string symbol) { @@ -95,26 +97,20 @@ SymbolTable::load(const string &filename) } bool -SymbolTable::findNearestSymbol(Addr address, string &symbol) const +SymbolTable::findNearestSymbol(Addr address, string &symbol, + Addr &sym_address, Addr &next_sym_address) const { - ATable::const_iterator i = addrTable.lower_bound(address); - - // check for PALCode - if (address & 0x1) - return false; + // find first key *larger* than desired address + ATable::const_iterator i = addrTable.upper_bound(address); - // first check for the end - if (i == addrTable.end()) - i--; - else if (i == addrTable.begin() && (*i).first != address) + // if very first key is larger, we're out of luck + if (i == addrTable.begin()) return false; - else if ((*i).first != address) - i--; - - symbol = (*i).second; - if (address != (*i).first) - symbol += csprintf("+%d", address - (*i).first); + next_sym_address = i->first; + --i; + sym_address = i->first; + symbol = i->second; return true; } -- cgit v1.2.3