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Implement "built_function" utility (runtime-generated assembly)

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Similar to build_function_asm, but links without indirection.
Achieved by emitting code directly into a byte array.
This commit is contained in:
Nekotekina 2021-12-22 19:27:20 +03:00
parent 12e3c9e08b
commit dcd011048d
6 changed files with 126 additions and 7 deletions
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38
Utilities/JIT.cpp
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@ -268,6 +268,44 @@ asmjit::Runtime& asmjit::get_global_runtime()
return g_rt;
}
asmjit::Error asmjit::inline_runtime::_add(void** dst, asmjit::CodeHolder* code) noexcept
{
usz codeSize = code->getCodeSize();
if (!codeSize) [[unlikely]]
{
*dst = nullptr;
return asmjit::kErrorNoCodeGenerated;
}
if (utils::align(codeSize, 4096) > m_size) [[unlikely]]
{
*dst = nullptr;
return asmjit::kErrorNoVirtualMemory;
}
usz relocSize = code->relocate(m_data);
if (!relocSize) [[unlikely]]
{
*dst = nullptr;
return asmjit::kErrorInvalidState;
}
flush(m_data, relocSize);
*dst = m_data;
return asmjit::kErrorOk;
}
asmjit::Error asmjit::inline_runtime::_release(void*) noexcept
{
return asmjit::kErrorOk;
}
asmjit::inline_runtime::~inline_runtime()
{
utils::memory_protect(m_data, m_size, utils::protection::rx);
}
#ifdef LLVM_AVAILABLE
#include <unordered_map>