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+// 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