mirror of https://github.com/x64dbg/zydis
added documentation to VXInstructionDecoderC.h
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c672c7a9fc
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@ -30,8 +30,6 @@
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**************************************************************************************************/
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/* NOTE: fully ported to C */
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#ifndef _VDE_VXDISASSEMBLERC_H_
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#define _VDE_VXDISASSEMBLERC_H_
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@ -30,8 +30,6 @@
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**************************************************************************************************/
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/* NOTE: fully ported to C */
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#ifndef _VDE_VXDISASSEMBLERTYPESC_H_
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#define _VDE_VXDISASSEMBLERTYPESC_H_
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**************************************************************************************************/
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/* NOTE: fully ported to C */
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#ifndef _VDE_VXDISASSEMBLERUTILSC_H_
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#define _VDE_VXDISASSEMBLERUTILSC_H_
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**************************************************************************************************/
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/* NOTE: fully ported to C */
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#ifndef _VDE_VXINSTRUCTIONDECODERC_H_
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#define _VDE_VXINSTRUCTIONDECODERC_H_
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@ -49,32 +47,88 @@ extern "C"
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typedef struct _VXBaseDataSourceContext { int a; } VXBaseDataSourceContext;
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/**
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* @brief Releases a data source.
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* @param ctx The context to release.
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* The context may no longer be used after it was released.
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*/
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void VXBaseDataSource_Release(
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VXBaseDataSourceContext *ctx);
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/**
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* @brief Reads the next byte from the data source without altering the current input position
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* or the @c length field of the @c info parameter.
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* @param ctx The data source context.
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* @param info The instruction info struct.
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* @return The current input byte. If the result is zero, you should always check the @c flags
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* field of the @c info parameter for error flags. Possible error values are
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* @c IF_ERROR_END_OF_INPUT or @c IF_ERROR_LENGTH.
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*/
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uint8_t VXBaseDataSource_InputPeek(
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VXBaseDataSourceContext *ctx,
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VXInstructionInfo *info);
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/**
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* @brief Reads the next byte from the data source.
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* @param ctx The data soruce context.
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* @param info The instruction info.
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* @return The current input byte. If the result is zero, you should always check the
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* @c flags field of the @c info parameter for error flags.
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* Possible error values are @c IF_ERROR_END_OF_INPUT or @c IF_ERROR_LENGTH.
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* This method increases the current input position and the @c length field of the @c info
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* parameter. This function also appends the new byte to to @c data field of the @c info
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* parameter.
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*/
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uint8_t VXBaseDataSource_InputNext(
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VXBaseDataSourceContext *ctx,
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VXInstructionInfo *info);
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/**
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* @brief Returns the current input byte.
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* @param ctx The data soruce context.
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* @return The current input byte.
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* The current input byte is set everytime the @c inputPeek or @c inputNext method is called.
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*/
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// TODO: check long descr
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uint8_t VXBaseDataSource_InputCurrent(
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const VXBaseDataSourceContext *ctx);
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/**
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* @brief Queries if the end of the data source is reached.
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* @param ctx The data soruce context.
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* @return @c true if end of input, @c false if not.
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*/
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bool VXBaseDataSource_IsEndOfInput(
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const VXBaseDataSourceContext *ctx);
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/**
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* @brief Returns the current input position.
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* @param ctx The data soruce context.
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* @return The current input position.
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*/
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uint64_t VXBaseDataSource_GetPosition(
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const VXBaseDataSourceContext *ctx);
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/**
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* @brief Sets a new input position.
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* @param ctx The data soruce context.
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* @param position The new input position.
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* @return @c false if the new position exceeds the maximum input length.
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*/
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bool VXBaseDataSource_SetPosition(
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VXBaseDataSourceContext *ctx,
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uint64_t position);
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/* VXMemoryDataSource ========================================================================== */
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/**
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* @brief Creates a memory data source.
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* @param buffer The input buffer.
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* @param bufferLen THe length of the input buffer.
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* @return @c nullptr if it fails, else a data source context.
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* @see VXBaseDataSource_Release
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*/
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// TODO: verify return value
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VXBaseDataSourceContext* VXMemoryDataSource_Create(
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const void* buffer,
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size_t bufferLen);
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@ -105,44 +159,113 @@ typedef enum _VXInstructionSetVendor /* : uint8_t */
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typedef struct _VXInstructionDecoderContext { int a; } VXInstructionDecoderContext;
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/**
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* @brief Creates an instruction decoder.
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* @return @c nullptr if it fails, else an instruction decoder context.
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* @see VXInstructionDecoder_Release
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*/
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// TODO: verify return value
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VXInstructionDecoderContext* VXInstructionDecoder_Create(void);
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/**
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* @brief Creates an instruction decoder.
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* @param input A reference to the input data source.
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* @param disassemblerMode The disassembler mode.
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* @param preferredVendor The preferred instruction-set vendor.
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* @param instructionPointer The initial instruction pointer.
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* @return @c nullptr if it fails, else an instruction decoder context.
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* @see VXInstructionDecoder_Release
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*/
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VXInstructionDecoderContext* VXInstructionDecoder_CreateEx(
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VXBaseDataSourceContext *input,
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VXDisassemblerMode disassemblerMode,
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VXInstructionSetVendor preferredVendor,
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uint64_t instructionPointer);
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/**
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* @brief Releases an instruction decoder.
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* @param ctx The context of the instruction decoder to release.
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*/
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void VXInstructionDecoder_Release(
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VXInstructionDecoderContext *ctx);
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/**
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* @brief Decodes the next instruction from the input data source.
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* @param ctx The instruction decoder context.
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* @param info The @c VXInstructionInfo struct that receives the information about the decoded
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* instruction.
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* @return This function returns @c false if the current position exceeds the maximum input
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* length. In all other cases (valid and invalid instructions) the return value is
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* @c true.
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*/
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bool VXInstructionDecoder_DecodeInstruction(
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VXInstructionDecoderContext *ctx, VXInstructionInfo *info);
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VXInstructionDecoderContext *ctx,
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VXInstructionInfo *info);
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/**
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* @brief Returns a pointer to the current data source.
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* @param ctx The instruction decoder context.
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* @return The context of the data source.
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*/
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VXBaseDataSourceContext* VXInstructionDecoder_GetDataSource(
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const VXInstructionDecoderContext *ctx);
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/**
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* @brief Sets a new data source.
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* @param ctx The instruction decoder context.
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* @param input The context of the new input data source.
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*/
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void VXInstructionDecoder_SetDataSource(
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VXInstructionDecoderContext *ctx,
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VXBaseDataSourceContext *input);
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/**
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* @brief Returns the current disassembler mode.
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* @param ctx The instruction decoder context.
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* @return The current disassembler mode.
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*/
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VXDisassemblerMode VXInstructionDecoder_GetDisassemblerMode(
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VXInstructionDecoderContext *ctx);
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/**
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* @brief Sets the current disassembler mode.
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* @param ctx The instruction decoder context.
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* @param disassemblerMode The new disassembler mode.
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*/
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void VXInstructionDecoder_SetDisassemblerMode(
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VXInstructionDecoderContext *ctx,
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VXDisassemblerMode disassemblerMode);
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/**
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* @brief Returns the preferred instruction-set vendor.
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* @param ctx The instruction decoder context.
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* @return The preferred instruction-set vendor.
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*/
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VXInstructionSetVendor VXInstructionDecoder_GetPreferredVendor(
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const VXInstructionDecoderContext *ctx);
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/**
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* @brief Sets the preferred instruction-set vendor.
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* @param ctx The instruction decoder context.
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* @param preferredVendor The new preferred instruction-set vendor.
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*/
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void VXInstructionDecoder_SetPreferredVendor(
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VXInstructionDecoderContext *ctx,
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VXInstructionSetVendor preferredVendor);
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/**
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* @brief Returns the current instruction pointer.
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* @param ctx The instruction decoder context.
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* @return The current instruction pointer.
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*/
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uint64_t VXInstructionDecoder_GetInstructionPointer(
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VXInstructionDecoderContext *ctx);
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/**
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* @brief Sets a new instruction pointer.
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* @param ctx The instruction decoder context.
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* @param instructionPointer The new instruction pointer.
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*/
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void VXInstructionDecoder_SetInstructionPointer(
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VXInstructionDecoderContext *ctx,
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uint64_t instructionPointer);
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**************************************************************************************************/
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/* NOTE: fully ported to C */
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#ifndef _VDE_VXOPCODETABLEC_H_
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#define _VDE_VXOPCODETABLEC_H_
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