mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-11-30 17:45:41 +00:00
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
// Copyright 2016, VIXL authors
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of ARM Limited nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without
|
|
// specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
|
|
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
|
|
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#ifndef VIXL_ASSEMBLER_BASE_H
|
|
#define VIXL_ASSEMBLER_BASE_H
|
|
|
|
#include "code-buffer-vixl.h"
|
|
|
|
namespace vixl {
|
|
|
|
class CodeBufferCheckScope;
|
|
|
|
namespace internal {
|
|
|
|
class AssemblerBase {
|
|
public:
|
|
AssemblerBase() : allow_assembler_(false) {}
|
|
explicit AssemblerBase(size_t capacity)
|
|
: buffer_(capacity), allow_assembler_(false) {}
|
|
AssemblerBase(byte* buffer, size_t capacity)
|
|
: buffer_(buffer, capacity), allow_assembler_(false) {}
|
|
|
|
virtual ~AssemblerBase() {}
|
|
|
|
// Finalize a code buffer of generated instructions. This function must be
|
|
// called before executing or copying code from the buffer.
|
|
void FinalizeCode() { GetBuffer()->SetClean(); }
|
|
|
|
ptrdiff_t GetCursorOffset() const { return GetBuffer().GetCursorOffset(); }
|
|
|
|
// Return the address of the cursor.
|
|
template <typename T>
|
|
T GetCursorAddress() const {
|
|
VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t));
|
|
return GetBuffer().GetOffsetAddress<T>(GetCursorOffset());
|
|
}
|
|
|
|
size_t GetSizeOfCodeGenerated() const { return GetCursorOffset(); }
|
|
|
|
// Accessors.
|
|
CodeBuffer* GetBuffer() { return &buffer_; }
|
|
const CodeBuffer& GetBuffer() const { return buffer_; }
|
|
bool AllowAssembler() const { return allow_assembler_; }
|
|
|
|
protected:
|
|
void SetAllowAssembler(bool allow) { allow_assembler_ = allow; }
|
|
|
|
// CodeBufferCheckScope must be able to temporarily allow the assembler.
|
|
friend class vixl::CodeBufferCheckScope;
|
|
|
|
// Buffer where the code is emitted.
|
|
CodeBuffer buffer_;
|
|
|
|
private:
|
|
bool allow_assembler_;
|
|
|
|
public:
|
|
// Deprecated public interface.
|
|
|
|
// Return the address of an offset in the buffer.
|
|
template <typename T>
|
|
VIXL_DEPRECATED("GetBuffer().GetOffsetAddress<T>(offset)",
|
|
T GetOffsetAddress(ptrdiff_t offset) const) {
|
|
return GetBuffer().GetOffsetAddress<T>(offset);
|
|
}
|
|
|
|
// Return the address of the start of the buffer.
|
|
template <typename T>
|
|
VIXL_DEPRECATED("GetBuffer().GetStartAddress<T>()",
|
|
T GetStartAddress() const) {
|
|
return GetBuffer().GetOffsetAddress<T>(0);
|
|
}
|
|
};
|
|
|
|
} // namespace internal
|
|
} // namespace vixl
|
|
|
|
#endif // VIXL_ASSEMBLER_BASE_H
|