Lightemerald/windows-user-space-emulator
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Fix instruction execution counting

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momo5502
2024-10-26 10:06:02 +02:00
parent b6a8f9793e
commit 1021009296
5 changed files with 56 additions and 23 deletions
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21
src/windows-emulator/windows_emulator.cpp
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@@ -4,7 +4,7 @@
#include <unicorn_x64_emulator.hpp>
constexpr auto MAX_INSTRUCTIONS_PER_TIME_SLICE = 10000;
constexpr auto MAX_INSTRUCTIONS_PER_TIME_SLICE = 100000;
namespace
{
@@ -867,8 +867,11 @@ void windows_emulator::start(std::chrono::nanoseconds timeout, size_t count)
const auto use_count = count > 0;
const auto use_timeout = timeout != std::chrono::nanoseconds{};
auto start_time = std::chrono::high_resolution_clock::now();
auto start_instructions = this->process().executed_instructions;
const auto start_time = std::chrono::high_resolution_clock::now();
const auto start_instructions = this->process().executed_instructions;
const auto target_time = start_time + timeout;
const auto target_instructions = start_instructions + count;
while (true)
{
@@ -887,29 +890,25 @@ void windows_emulator::start(std::chrono::nanoseconds timeout, size_t count)
if (use_timeout)
{
const auto now = std::chrono::high_resolution_clock::now();
const auto diff = now - start_time;
if (diff >= timeout)
if (now >= target_time)
{
break;
}
timeout = timeout - diff;
start_time = now;
timeout = target_time - now;
}
if (use_count)
{
const auto current_instructions = this->process().executed_instructions;
const auto diff = current_instructions - start_instructions;
if (diff >= count)
if (current_instructions >= target_instructions)
{
break;
}
count = diff;
start_instructions = current_instructions;
count = target_instructions - current_instructions;
}
}
}