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Diffstat (limited to 'client/asmjit/core/assembler.h')
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1 files changed, 152 insertions, 0 deletions
diff --git a/client/asmjit/core/assembler.h b/client/asmjit/core/assembler.h new file mode 100644 index 0000000..fb84207 --- /dev/null +++ b/client/asmjit/core/assembler.h @@ -0,0 +1,152 @@ +// AsmJit - Machine code generation for C++ +// +// * Official AsmJit Home Page: https://asmjit.com +// * Official Github Repository: https://github.com/asmjit/asmjit +// +// Copyright (c) 2008-2020 The AsmJit Authors +// +// This software is provided 'as-is', without any express or implied +// warranty. In no event will the authors be held liable for any damages +// arising from the use of this software. +// +// Permission is granted to anyone to use this software for any purpose, +// including commercial applications, and to alter it and redistribute it +// freely, subject to the following restrictions: +// +// 1. The origin of this software must not be misrepresented; you must not +// claim that you wrote the original software. If you use this software +// in a product, an acknowledgment in the product documentation would be +// appreciated but is not required. +// 2. Altered source versions must be plainly marked as such, and must not be +// misrepresented as being the original software. +// 3. This notice may not be removed or altered from any source distribution. + +#ifndef ASMJIT_CORE_ASSEMBLER_H_INCLUDED +#define ASMJIT_CORE_ASSEMBLER_H_INCLUDED + +#include "../core/codeholder.h" +#include "../core/datatypes.h" +#include "../core/emitter.h" +#include "../core/operand.h" + +ASMJIT_BEGIN_NAMESPACE + +//! \addtogroup asmjit_assembler +//! \{ + +// ============================================================================ +// [asmjit::BaseAssembler] +// ============================================================================ + +//! Base assembler. +//! +//! This is a base class that provides interface used by architecture specific +//! assembler implementations. Assembler doesn't hold any data, instead it's +//! attached to \ref CodeHolder, which provides all the data that Assembler +//! needs and which can be altered by it. +//! +//! Check out architecture specific assemblers for more details and examples: +//! +//! - \ref x86::Assembler - X86/X64 assembler implementation. +class ASMJIT_VIRTAPI BaseAssembler : public BaseEmitter { +public: + ASMJIT_NONCOPYABLE(BaseAssembler) + typedef BaseEmitter Base; + + //! Current section where the assembling happens. + Section* _section; + //! Start of the CodeBuffer of the current section. + uint8_t* _bufferData; + //! End (first invalid byte) of the current section. + uint8_t* _bufferEnd; + //! Pointer in the CodeBuffer of the current section. + uint8_t* _bufferPtr; + + //! \name Construction & Destruction + //! \{ + + //! Creates a new `BaseAssembler` instance. + ASMJIT_API BaseAssembler() noexcept; + //! Destroys the `BaseAssembler` instance. + ASMJIT_API virtual ~BaseAssembler() noexcept; + + //! \} + + //! \name Code-Buffer Management + //! \{ + + //! Returns the capacity of the current CodeBuffer. + inline size_t bufferCapacity() const noexcept { return (size_t)(_bufferEnd - _bufferData); } + //! Returns the number of remaining bytes in the current CodeBuffer. + inline size_t remainingSpace() const noexcept { return (size_t)(_bufferEnd - _bufferPtr); } + + //! Returns the current position in the CodeBuffer. + inline size_t offset() const noexcept { return (size_t)(_bufferPtr - _bufferData); } + + //! Sets the current position in the CodeBuffer to `offset`. + //! + //! \note The `offset` cannot be greater than buffer size even if it's + //! within the buffer's capacity. + ASMJIT_API Error setOffset(size_t offset); + + //! Returns the start of the CodeBuffer in the current section. + inline uint8_t* bufferData() const noexcept { return _bufferData; } + //! Returns the end (first invalid byte) in the current section. + inline uint8_t* bufferEnd() const noexcept { return _bufferEnd; } + //! Returns the current pointer in the CodeBuffer in the current section. + inline uint8_t* bufferPtr() const noexcept { return _bufferPtr; } + + //! \} + + //! \name Section Management + //! \{ + + //! Returns the current section. + inline Section* currentSection() const noexcept { return _section; } + + ASMJIT_API Error section(Section* section) override; + + //! \} + + //! \name Label Management + //! \{ + + ASMJIT_API Label newLabel() override; + ASMJIT_API Label newNamedLabel(const char* name, size_t nameSize = SIZE_MAX, uint32_t type = Label::kTypeGlobal, uint32_t parentId = Globals::kInvalidId) override; + ASMJIT_API Error bind(const Label& label) override; + + //! \} + + //! \name Embed + //! \{ + + ASMJIT_API Error embed(const void* data, size_t dataSize) override; + ASMJIT_API Error embedDataArray(uint32_t typeId, const void* data, size_t itemCcount, size_t repeatCount = 1) override; + ASMJIT_API Error embedConstPool(const Label& label, const ConstPool& pool) override; + + ASMJIT_API Error embedLabel(const Label& label, size_t dataSize = 0) override; + ASMJIT_API Error embedLabelDelta(const Label& label, const Label& base, size_t dataSize = 0) override; + + //! \} + + //! \name Comment + //! \{ + + ASMJIT_API Error comment(const char* data, size_t size = SIZE_MAX) override; + + //! \} + + //! \name Events + //! \{ + + ASMJIT_API Error onAttach(CodeHolder* code) noexcept override; + ASMJIT_API Error onDetach(CodeHolder* code) noexcept override; + + //! \} +}; + +//! \} + +ASMJIT_END_NAMESPACE + +#endif // ASMJIT_CORE_ASSEMBLER_H_INCLUDED |