mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-11 09:00:21 +02:00
Ryan Houdek
c21f711417
This allows linux perf to see execution inside of JIT functions. This could be extended in the future to support something like vtune or oprofile.
36 lines
834 B
C++
36 lines
834 B
C++
#include "Common/JitSymbols.h"
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#include <string>
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#include <sstream>
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#include <unistd.h>
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namespace FEXCore {
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JITSymbols::JITSymbols() {
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std::stringstream PerfMap;
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PerfMap << "/tmp/perf-" << getpid() << ".map";
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fp = fopen(PerfMap.str().c_str(), "wb");
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if (fp) {
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// Disable buffering on this file
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setvbuf(fp, nullptr, _IONBF, 0);
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}
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}
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JITSymbols::~JITSymbols() {
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if (fp) {
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fclose(fp);
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}
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}
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void JITSymbols::Register(void *HostAddr, uint64_t GuestAddr, uint32_t CodeSize) {
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if (!fp) return;
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// Linux perf format is very straightforward
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// `<HostPtr> <Size> <Name>\n`
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std::stringstream String;
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String << std::hex << HostAddr << " " << CodeSize << " " << "JIT_0x" << GuestAddr << std::endl;
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fwrite(String.str().c_str(), 1, String.str().size(), fp);
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}
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}
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