307 lines
11 KiB
C
307 lines
11 KiB
C
|
/***************************************************************************************************
|
||
|
|
|
||
|
|
Zyan Disassembler Library (Zydis)
|
||
|
|
|
||
|
|
Original Author : Florian Bernd
|
||
|
|
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
|
* in the Software without restriction, including without limitation the rights
|
||
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
|
* furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in all
|
||
|
|
* copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
* SOFTWARE.
|
||
|
|
|
||
|
|
***************************************************************************************************/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
* Implements the `ZydisFormatterToken` type and provides functions to use it.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef ZYDIS_FORMATTER_TOKEN_H
|
||
|
|
#define ZYDIS_FORMATTER_TOKEN_H
|
||
|
|
|
||
|
|
#include <ZydisExportConfig.h>
|
||
|
|
#include <Zycore/String.h>
|
||
|
|
#include <Zycore/Types.h>
|
||
|
|
#include <Zydis/Status.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
/* Constants */
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Token types */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @biref Defines the `ZydisTokenType` data-type.
|
||
|
|
*/
|
||
|
|
typedef ZyanU8 ZydisTokenType;
|
||
|
|
|
||
|
|
#define ZYDIS_TOKEN_INVALID 0x00
|
||
|
|
/**
|
||
|
|
* A whitespace character.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_WHITESPACE 0x01
|
||
|
|
/**
|
||
|
|
* A delimiter character (like `','`, `':'`, `'+'`, `'-'`, `'*'`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_DELIMITER 0x02
|
||
|
|
/**
|
||
|
|
* An opening parenthesis character (like `'('`, `'['`, `'{'`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_PARENTHESIS_OPEN 0x03
|
||
|
|
/**
|
||
|
|
* A closing parenthesis character (like `')'`, `']'`, `'}'`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_PARENTHESIS_CLOSE 0x04
|
||
|
|
/**
|
||
|
|
* A prefix literal (like `"LOCK"`, `"REP"`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_PREFIX 0x05
|
||
|
|
/**
|
||
|
|
* A mnemonic literal (like `"MOV"`, `"VCMPPSD"`, `"LCALL"`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_MNEMONIC 0x06
|
||
|
|
/**
|
||
|
|
* A register literal (like `"RAX"`, `"DS"`, `"%ECX"`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_REGISTER 0x07
|
||
|
|
/**
|
||
|
|
* An absolute address literal (like `0x00400000`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_ADDRESS_ABS 0x08
|
||
|
|
/**
|
||
|
|
* A relative address literal (like `-0x100`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_ADDRESS_REL 0x09
|
||
|
|
/**
|
||
|
|
* A displacement literal (like `0xFFFFFFFF`, `-0x100`, `+0x1234`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_DISPLACEMENT 0x0A
|
||
|
|
/**
|
||
|
|
* An immediate literal (like `0xC0`, `-0x1234`, `$0x0000`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_IMMEDIATE 0x0B
|
||
|
|
/**
|
||
|
|
* A typecast literal (like `DWORD PTR`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_TYPECAST 0x0C
|
||
|
|
/**
|
||
|
|
* A decorator literal (like `"Z"`, `"1TO4"`).
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_DECORATOR 0x0D
|
||
|
|
/**
|
||
|
|
* A symbol literal.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_SYMBOL 0x0E
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The base for user-defined token types.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_TOKEN_USER 0x80
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
/* Enums and types */
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Token */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
#pragma pack(push, 1)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Defines the `ZydisFormatterToken` struct.
|
||
|
|
*
|
||
|
|
* All fields in this struct should be considered as "private". Any changes may lead to unexpected
|
||
|
|
* behavior.
|
||
|
|
*/
|
||
|
|
typedef struct ZydisFormatterToken_
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* The token type.
|
||
|
|
*/
|
||
|
|
ZydisTokenType type;
|
||
|
|
/**
|
||
|
|
* An offset to the next token, or `0`.
|
||
|
|
*/
|
||
|
|
ZyanU8 next;
|
||
|
|
} ZydisFormatterToken;
|
||
|
|
|
||
|
|
#pragma pack(pop)
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Defines the `ZydisFormatterTokenConst` data-type.
|
||
|
|
*/
|
||
|
|
typedef const ZydisFormatterToken ZydisFormatterTokenConst;
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Buffer */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Defines the `ZydisFormatterBuffer` struct.
|
||
|
|
*
|
||
|
|
* All fields in this struct should be considered as "private". Any changes may
|
||
|
|
* lead to unexpected behavior.
|
||
|
|
*/
|
||
|
|
typedef struct ZydisFormatterBuffer_
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* `ZYAN_TRUE`, if the buffer contains a token stream or `ZYAN_FALSE, if it
|
||
|
|
* contains a simple string.
|
||
|
|
*/
|
||
|
|
ZyanBool is_token_list;
|
||
|
|
/**
|
||
|
|
* The remaining capacity of the buffer.
|
||
|
|
*/
|
||
|
|
ZyanUSize capacity;
|
||
|
|
/**
|
||
|
|
* The `ZyanString` instance that refers to the literal value of the most
|
||
|
|
* recently added token.
|
||
|
|
*/
|
||
|
|
ZyanString string;
|
||
|
|
} ZydisFormatterBuffer;
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
/* Exported functions */
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Token */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the `type` and the string `value` of the given `token`.
|
||
|
|
*
|
||
|
|
* @param token A pointer to the `ZydisFormatterToken` struct.
|
||
|
|
* @param type Receives the token type.
|
||
|
|
* @param value Receives a pointer to the string value of the token.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterTokenGetValue(const ZydisFormatterToken* token,
|
||
|
|
ZydisTokenType* type, ZyanConstCharPointer* value);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Obtains the next `token` linked to the passed one.
|
||
|
|
*
|
||
|
|
* @param token Receives a pointer to the next `ZydisFormatterToken` struct
|
||
|
|
* linked to the passed one.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterTokenNext(ZydisFormatterTokenConst** token);
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Buffer */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current (most recently added) token.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param token Receives a pointer to the current token.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*
|
||
|
|
* This function returns `ZYAN_STATUS_INVALID_OPERATION`, if the buffer does not contain at least
|
||
|
|
* one token.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterBufferGetToken(const ZydisFormatterBuffer* buffer,
|
||
|
|
ZydisFormatterTokenConst** token);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the `ZyanString` instance associated with the given buffer.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param string Receives a pointer to the `ZyanString` instance associated with the given
|
||
|
|
* buffer.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*
|
||
|
|
* This function returns `ZYAN_STATUS_INVALID_OPERATION`, if the buffer does not contain at least
|
||
|
|
* one token.
|
||
|
|
*
|
||
|
|
* The returned string always refers to the literal value of the current (most recently added)
|
||
|
|
* token and will remain valid until the buffer is destroyed.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterBufferGetString(ZydisFormatterBuffer* buffer,
|
||
|
|
ZyanString** string);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends a new token to the `buffer`.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param type The type of the new token.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*
|
||
|
|
* Note that the `ZyanString` instance returned by `ZydisFormatterBufferGetString` will
|
||
|
|
* automatically be updated by calling this function.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterBufferAppend(ZydisFormatterBuffer* buffer,
|
||
|
|
ZydisTokenType type);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a snapshot of the buffer-state.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param state Receives a snapshot of the buffer-state.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*
|
||
|
|
* Note that the buffer-state is saved inside the buffer itself and thus becomes invalid as soon
|
||
|
|
* as the buffer gets overwritten or destroyed.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterBufferRemember(const ZydisFormatterBuffer* buffer,
|
||
|
|
ZyanUPointer* state);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Restores a previously saved buffer-state.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param state The buffer-state to restore.
|
||
|
|
*
|
||
|
|
* @return A zyan status code.
|
||
|
|
*
|
||
|
|
* All tokens added after obtaining the given `state` snapshot will be removed. This function
|
||
|
|
* does NOT restore any string content.
|
||
|
|
*
|
||
|
|
* Note that the `ZyanString` instance returned by `ZydisFormatterBufferGetString` will
|
||
|
|
* automatically be updated by calling this function.
|
||
|
|
*/
|
||
|
|
ZYDIS_EXPORT ZyanStatus ZydisFormatterBufferRestore(ZydisFormatterBuffer* buffer,
|
||
|
|
ZyanUPointer state);
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* ZYDIS_FORMATTER_TOKEN_H */
|