325 lines
13 KiB
C
325 lines
13 KiB
C
|
/***************************************************************************************************
|
||
|
|
|
||
|
|
Zyan Disassembler Library (Zydis)
|
||
|
|
|
||
|
|
Original Author : Florian Bernd, Joel Hoener
|
||
|
|
|
||
|
|
* 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
|
||
|
|
* Provides formatter functions that are shared between the different formatters.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef ZYDIS_FORMATTER_BASE_H
|
||
|
|
#define ZYDIS_FORMATTER_BASE_H
|
||
|
|
|
||
|
|
#include <Zydis/Formatter.h>
|
||
|
|
#include <Zydis/Internal/String.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
/* Macros */
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* String */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends an unsigned numeric value to the given string.
|
||
|
|
*
|
||
|
|
* @param formatter A pointer to the `ZydisFormatter` instance.
|
||
|
|
* @param base The numeric base.
|
||
|
|
* @param str The destination string.
|
||
|
|
* @param value The value to append.
|
||
|
|
* @param padding_length The padding length.
|
||
|
|
* @param force_leading_number Enable this option to prepend a leading `0` if the first
|
||
|
|
* character is non-numeric.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_STRING_APPEND_NUM_U(formatter, base, str, value, padding_length, \
|
||
|
|
force_leading_number) \
|
||
|
|
switch (base) \
|
||
|
|
{ \
|
||
|
|
case ZYDIS_NUMERIC_BASE_DEC: \
|
||
|
|
ZYAN_CHECK(ZydisStringAppendDecU(str, value, padding_length, \
|
||
|
|
(formatter)->number_format[base][0].string, \
|
||
|
|
(formatter)->number_format[base][1].string)); \
|
||
|
|
break; \
|
||
|
|
case ZYDIS_NUMERIC_BASE_HEX: \
|
||
|
|
ZYAN_CHECK(ZydisStringAppendHexU(str, value, padding_length, force_leading_number, \
|
||
|
|
(formatter)->hex_uppercase, \
|
||
|
|
(formatter)->number_format[base][0].string, \
|
||
|
|
(formatter)->number_format[base][1].string)); \
|
||
|
|
break; \
|
||
|
|
default: \
|
||
|
|
return ZYAN_STATUS_INVALID_ARGUMENT; \
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends a signed numeric value to the given string.
|
||
|
|
*
|
||
|
|
* @param formatter A pointer to the `ZydisFormatter` instance.
|
||
|
|
* @param base The numeric base.
|
||
|
|
* @param str The destination string.
|
||
|
|
* @param value The value to append.
|
||
|
|
* @param padding_length The padding length.
|
||
|
|
* @param force_leading_number Enable this option to prepend a leading `0`, if the first
|
||
|
|
* character is non-numeric.
|
||
|
|
* @param force_sign Enable to print the '+' sign for positive numbers.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_STRING_APPEND_NUM_S(formatter, base, str, value, padding_length, \
|
||
|
|
force_leading_number, force_sign) \
|
||
|
|
switch (base) \
|
||
|
|
{ \
|
||
|
|
case ZYDIS_NUMERIC_BASE_DEC: \
|
||
|
|
ZYAN_CHECK(ZydisStringAppendDecS(str, value, padding_length, force_sign, \
|
||
|
|
(formatter)->number_format[base][0].string, \
|
||
|
|
(formatter)->number_format[base][1].string)); \
|
||
|
|
break; \
|
||
|
|
case ZYDIS_NUMERIC_BASE_HEX: \
|
||
|
|
ZYAN_CHECK(ZydisStringAppendHexS(str, value, padding_length, force_leading_number, \
|
||
|
|
(formatter)->hex_uppercase, force_sign, \
|
||
|
|
(formatter)->number_format[base][0].string, \
|
||
|
|
(formatter)->number_format[base][1].string)); \
|
||
|
|
break; \
|
||
|
|
default: \
|
||
|
|
return ZYAN_STATUS_INVALID_ARGUMENT; \
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Buffer */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invokes the `ZydisFormatterBufferAppend` routine, if tokenization is enabled for the
|
||
|
|
* current pass.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param type The token type.
|
||
|
|
*
|
||
|
|
* Using this macro instead of direct calls to `ZydisFormatterBufferAppend` greatly improves the
|
||
|
|
* performance for non-tokenizing passes.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_BUFFER_APPEND_TOKEN(buffer, type) \
|
||
|
|
if ((buffer)->is_token_list) \
|
||
|
|
{ \
|
||
|
|
ZYAN_CHECK(ZydisFormatterBufferAppend(buffer, 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.
|
||
|
|
*
|
||
|
|
* Using this macro instead of direct calls to `ZydisFormatterBufferRemember` improves the
|
||
|
|
* performance for non-tokenizing passes.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_BUFFER_REMEMBER(buffer, state) \
|
||
|
|
if ((buffer)->is_token_list) \
|
||
|
|
{ \
|
||
|
|
(state) = (ZyanUPointer)(buffer)->string.vector.data; \
|
||
|
|
} else \
|
||
|
|
{ \
|
||
|
|
(state) = (ZyanUPointer)(buffer)->string.vector.size; \
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends a string (`STR_`-prefix) or a predefined token-list (`TOK_`-prefix).
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param name The base name (without prefix) of the string- or token.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_BUFFER_APPEND(buffer, name) \
|
||
|
|
if ((buffer)->is_token_list) \
|
||
|
|
{ \
|
||
|
|
ZYAN_CHECK(ZydisFormatterBufferAppendPredefined(buffer, TOK_ ## name)); \
|
||
|
|
} else \
|
||
|
|
{ \
|
||
|
|
ZYAN_CHECK(ZydisStringAppendShort(&buffer->string, &STR_ ## name)); \
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: Implement `letter_case` for predefined tokens
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends a string (`STR_`-prefix) or a predefined token-list (`TOK_`-prefix).
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param name The base name (without prefix) of the string- or token.
|
||
|
|
* @param letter_case The desired letter-case.
|
||
|
|
*/
|
||
|
|
#define ZYDIS_BUFFER_APPEND_CASE(buffer, name, letter_case) \
|
||
|
|
if ((buffer)->is_token_list) \
|
||
|
|
{ \
|
||
|
|
ZYAN_CHECK(ZydisFormatterBufferAppendPredefined(buffer, TOK_ ## name)); \
|
||
|
|
} else \
|
||
|
|
{ \
|
||
|
|
ZYAN_CHECK(ZydisStringAppendShortCase(&buffer->string, &STR_ ## name, letter_case)); \
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
/* Helper functions */
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Buffer */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
// MSVC does not like the C99 flexible-array extension
|
||
|
|
#ifdef ZYAN_MSVC
|
||
|
|
# pragma warning(push)
|
||
|
|
# pragma warning(disable:4200)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#pragma pack(push, 1)
|
||
|
|
|
||
|
|
typedef struct ZydisPredefinedToken_
|
||
|
|
{
|
||
|
|
ZyanU8 size;
|
||
|
|
ZyanU8 next;
|
||
|
|
ZyanU8 data[];
|
||
|
|
} ZydisPredefinedToken;
|
||
|
|
|
||
|
|
#pragma pack(pop)
|
||
|
|
|
||
|
|
#ifdef ZYAN_MSVC
|
||
|
|
# pragma warning(pop)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Appends a predefined token-list to the `buffer`.
|
||
|
|
*
|
||
|
|
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
|
||
|
|
* @param data A pointer to the `ZydisPredefinedToken` struct.
|
||
|
|
*
|
||
|
|
* @return A zycore status code.
|
||
|
|
*
|
||
|
|
* This function is internally used to improve performance while adding static strings or multiple
|
||
|
|
* tokens at once.
|
||
|
|
*/
|
||
|
|
ZYAN_INLINE ZyanStatus ZydisFormatterBufferAppendPredefined(ZydisFormatterBuffer* buffer,
|
||
|
|
const ZydisPredefinedToken* data)
|
||
|
|
{
|
||
|
|
ZYAN_ASSERT(buffer);
|
||
|
|
ZYAN_ASSERT(data);
|
||
|
|
|
||
|
|
const ZyanUSize len = buffer->string.vector.size;
|
||
|
|
ZYAN_ASSERT((len > 0) && (len < 256));
|
||
|
|
if (buffer->capacity <= len + data->size)
|
||
|
|
{
|
||
|
|
return ZYAN_STATUS_INSUFFICIENT_BUFFER_SIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
ZydisFormatterToken* const last = (ZydisFormatterToken*)buffer->string.vector.data - 1;
|
||
|
|
last->next = (ZyanU8)len;
|
||
|
|
|
||
|
|
ZYAN_MEMCPY((ZyanU8*)buffer->string.vector.data + len, &data->data[0], data->size);
|
||
|
|
|
||
|
|
const ZyanUSize delta = len + data->next;
|
||
|
|
buffer->capacity -= delta;
|
||
|
|
buffer->string.vector.data = (ZyanU8*)buffer->string.vector.data + delta;
|
||
|
|
buffer->string.vector.size = data->size - data->next;
|
||
|
|
buffer->string.vector.capacity = ZYAN_MIN(buffer->capacity, 255);
|
||
|
|
|
||
|
|
return ZYAN_STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* General */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the size to be used as explicit size suffix (`AT&T`) or explicit typecast
|
||
|
|
* (`INTEL`), if required.
|
||
|
|
*
|
||
|
|
* @param formatter A pointer to the `ZydisFormatter` instance.
|
||
|
|
* @param context A pointer to the `ZydisFormatterContext` struct.
|
||
|
|
* @param operand The instructions first memory operand.
|
||
|
|
*
|
||
|
|
* @return Returns the explicit size, if required, or `0`, if not needed.
|
||
|
|
*
|
||
|
|
* This function always returns a size different to `0`, if the `ZYDIS_FORMATTER_PROP_FORCE_SIZE`
|
||
|
|
* is set to `ZYAN_TRUE`.
|
||
|
|
*/
|
||
|
|
ZyanU32 ZydisFormatterHelperGetExplicitSize(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterContext* context, const ZydisDecodedOperand* operand);
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
/* Formatter functions */
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Operands */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBaseFormatOperandREG(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBaseFormatOperandPTR(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBaseFormatOperandIMM(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Elemental tokens */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBasePrintAddressABS(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBasePrintAddressREL(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBasePrintIMM(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
/* Optional tokens */
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBasePrintSegment(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBasePrintPrefixes(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
|
||
|
|
|
||
|
|
ZyanStatus ZydisFormatterBasePrintDecorator(const ZydisFormatter* formatter,
|
||
|
|
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context, ZydisDecorator decorator);
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* ============================================================================================== */
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // ZYDIS_FORMATTER_BASE_H
|