12b539ff75
This change touches several subsystems, tools and experiments (sal, util, cmake, import-trace, generic-tracing, nanojpeg), and changes details not worth separate commits. Change-Id: Icd1d664d1be5cfc2212dbf77801c271183214d08
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
#include "util/Logger.hpp"
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#include "MemoryImporter.hpp"
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using namespace fail;
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static fail::Logger LOG("MemoryImporter");
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bool MemoryImporter::handle_ip_event(simtime_t curtime, instruction_count_t instr, Trace_Event &ev) {
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return true;
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}
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bool MemoryImporter::handle_mem_event(simtime_t curtime, instruction_count_t instr,
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Trace_Event &ev) {
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address_t from = ev.memaddr(), to = ev.memaddr() + ev.width();
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// Iterate over all accessed bytes
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// FIXME Keep complete trace information (access width)?
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// advantages: may be used for pruning strategies, complete value would be visible; less DB entries
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// disadvantages: may need splitting when width varies, lots of special case handling
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// Probably implement this in a separate importer when necessary.
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for (address_t data_address = from; data_address < to; ++data_address) {
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// skip events outside a possibly supplied memory map
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if (m_mm && !m_mm->isMatching(data_address)) {
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continue;
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}
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margin_info_t left_margin = getOpenEC(data_address);
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margin_info_t right_margin;
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right_margin.time = curtime;
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right_margin.dyninstr = instr; // !< The current instruction
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right_margin.ip = ev.ip();
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// skip zero-sized intervals: these can occur when an instruction
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// accesses a memory location more than once (e.g., INC, CMPXCHG)
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// FIXME: look at timing instead?
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if (left_margin.dyninstr > right_margin.dyninstr) {
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continue;
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}
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// we now have an interval-terminating R/W event to the memaddr
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// we're currently looking at; the EC is defined by
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// data_address, dynamic instruction start/end, the absolute PC at
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// the end, and time start/end
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// pass through potentially available extended trace information
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ev.set_memaddr(data_address);
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ev.set_width(1); // exactly one byte
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if (!add_trace_event(left_margin, right_margin, ev)) {
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LOG << "add_trace_event failed" << std::endl;
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return false;
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}
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// next interval must start at next instruction; the aforementioned
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// skipping mechanism wouldn't work otherwise
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newOpenEC(data_address, curtime + 1, instr + 1, ev.ip());
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}
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return true;
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}
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