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Duckstation/dep/zydis/include/Zydis/Formatter.h

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dep: Add Zydis
2023-05-22 09:36:26 +00:00
/***************************************************************************************************
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
* Functions for formatting instructions to human-readable text.
*/
#ifndef ZYDIS_FORMATTER_H
#define ZYDIS_FORMATTER_H
#include <Zycore/Defines.h>
#include <Zycore/String.h>
#include <Zycore/Types.h>
#include <Zydis/DecoderTypes.h>
#include <Zydis/FormatterBuffer.h>
#ifdef __cplusplus
extern "C" {
#endif
/* ============================================================================================== */
/* Constants */
/* ============================================================================================== */
/**
* Use this constant as value for `runtime_address` in `ZydisFormatterFormatInstruction(Ex)`
* or `ZydisFormatterFormatOperand(Ex)` to print relative values for all addresses.
*/
#define ZYDIS_RUNTIME_ADDRESS_NONE (ZyanU64)(-1)
/* ============================================================================================== */
/* Enums and types */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Formatter style */
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum selecting the syntax to format the disassembly in.
*/
typedef enum ZydisFormatterStyle_
{
/**
* Generates `AT&T`-style disassembly.
*/
ZYDIS_FORMATTER_STYLE_ATT,
/**
* Generates `Intel`-style disassembly.
*/
ZYDIS_FORMATTER_STYLE_INTEL,
/**
* Generates `MASM`-style disassembly that is directly accepted as input for
* the `MASM` assembler.
*
* The runtime-address is ignored in this mode.
*/
ZYDIS_FORMATTER_STYLE_INTEL_MASM,
/**
* Maximum value of this enum.
*/
ZYDIS_FORMATTER_STYLE_MAX_VALUE = ZYDIS_FORMATTER_STYLE_INTEL_MASM,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_FORMATTER_STYLE_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_FORMATTER_STYLE_MAX_VALUE)
} ZydisFormatterStyle;
/* ---------------------------------------------------------------------------------------------- */
/* Properties */
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum selecting a property of the formatter.
*/
typedef enum ZydisFormatterProperty_
{
/* ---------------------------------------------------------------------------------------- */
/* General */
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the printing of effective operand-size suffixes (`AT&T`) or operand-sizes
* of memory operands (`INTEL`).
*
* Pass `ZYAN_TRUE` as value to force the formatter to always print the size, or `ZYAN_FALSE`
* to only print it if needed.
*/
ZYDIS_FORMATTER_PROP_FORCE_SIZE,
/**
* Controls the printing of segment prefixes.
*
* Pass `ZYAN_TRUE` as value to force the formatter to always print the segment register of
* memory-operands or `ZYAN_FALSE` to omit implicit `DS`/`SS` segments.
*/
ZYDIS_FORMATTER_PROP_FORCE_SEGMENT,
/**
* Controls the printing of the scale-factor component for memory operands.
*
* Pass `ZYAN_TRUE` as value to force the formatter to always print the scale-factor component
* of memory operands or `ZYAN_FALSE` to omit the scale factor for values of `1`.
*/
ZYDIS_FORMATTER_PROP_FORCE_SCALE_ONE,
/**
* Controls the printing of branch addresses.
*
* Pass `ZYAN_TRUE` as value to force the formatter to always print relative branch addresses
* or `ZYAN_FALSE` to use absolute addresses, if a runtime-address different to
* `ZYDIS_RUNTIME_ADDRESS_NONE` was passed.
*/
ZYDIS_FORMATTER_PROP_FORCE_RELATIVE_BRANCHES,
/**
* Controls the printing of `EIP`/`RIP`-relative addresses.
*
* Pass `ZYAN_TRUE` as value to force the formatter to always print relative addresses for
* `EIP`/`RIP`-relative operands or `ZYAN_FALSE` to use absolute addresses, if a runtime-
* address different to `ZYDIS_RUNTIME_ADDRESS_NONE` was passed.
*/
ZYDIS_FORMATTER_PROP_FORCE_RELATIVE_RIPREL,
/**
* Controls the printing of branch-instructions sizes.
*
* Pass `ZYAN_TRUE` as value to print the size (`short`, `near`) of branch
* instructions or `ZYAN_FALSE` to hide it.
*
* Note that the `far`/`l` modifier is always printed.
*/
ZYDIS_FORMATTER_PROP_PRINT_BRANCH_SIZE,
/**
* Controls the printing of instruction prefixes.
*
* Pass `ZYAN_TRUE` as value to print all instruction-prefixes (even ignored or duplicate
* ones) or `ZYAN_FALSE` to only print prefixes that are effectively used by the instruction.
*/
ZYDIS_FORMATTER_PROP_DETAILED_PREFIXES,
/* ---------------------------------------------------------------------------------------- */
/* Numeric values */
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the base of address values.
*/
ZYDIS_FORMATTER_PROP_ADDR_BASE,
/**
* Controls the signedness of relative addresses. Absolute addresses are
* always unsigned.
*/
ZYDIS_FORMATTER_PROP_ADDR_SIGNEDNESS,
/**
* Controls the padding of absolute address values.
*
* Pass `ZYDIS_PADDING_DISABLED` to disable padding, `ZYDIS_PADDING_AUTO` to padd all
* addresses to the current stack width (hexadecimal only), or any other integer value for
* custom padding.
*/
ZYDIS_FORMATTER_PROP_ADDR_PADDING_ABSOLUTE,
/**
* Controls the padding of relative address values.
*
* Pass `ZYDIS_PADDING_DISABLED` to disable padding, `ZYDIS_PADDING_AUTO` to padd all
* addresses to the current stack width (hexadecimal only), or any other integer value for
* custom padding.
*/
ZYDIS_FORMATTER_PROP_ADDR_PADDING_RELATIVE,
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the base of displacement values.
*/
ZYDIS_FORMATTER_PROP_DISP_BASE,
/**
* Controls the signedness of displacement values.
*/
ZYDIS_FORMATTER_PROP_DISP_SIGNEDNESS,
/**
* Controls the padding of displacement values.
*
* Pass `ZYDIS_PADDING_DISABLED` to disable padding, or any other integer value for custom
* padding.
*/
ZYDIS_FORMATTER_PROP_DISP_PADDING,
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the base of immediate values.
*/
ZYDIS_FORMATTER_PROP_IMM_BASE,
/**
* Controls the signedness of immediate values.
*
* Pass `ZYDIS_SIGNEDNESS_AUTO` to automatically choose the most suitable mode based on the
* operands `ZydisDecodedOperand.imm.is_signed` attribute.
*/
ZYDIS_FORMATTER_PROP_IMM_SIGNEDNESS,
/**
* Controls the padding of immediate values.
*
* Pass `ZYDIS_PADDING_DISABLED` to disable padding, `ZYDIS_PADDING_AUTO` to padd all
* immediates to the operand-width (hexadecimal only), or any other integer value for custom
* padding.
*/
ZYDIS_FORMATTER_PROP_IMM_PADDING,
/* ---------------------------------------------------------------------------------------- */
/* Text formatting */
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the letter-case for prefixes.
*
* Pass `ZYAN_TRUE` as value to format in uppercase or `ZYAN_FALSE` to format in lowercase.
*/
ZYDIS_FORMATTER_PROP_UPPERCASE_PREFIXES,
/**
* Controls the letter-case for the mnemonic.
*
* Pass `ZYAN_TRUE` as value to format in uppercase or `ZYAN_FALSE` to format in lowercase.
*/
ZYDIS_FORMATTER_PROP_UPPERCASE_MNEMONIC,
/**
* Controls the letter-case for registers.
*
* Pass `ZYAN_TRUE` as value to format in uppercase or `ZYAN_FALSE` to format in lowercase.
*/
ZYDIS_FORMATTER_PROP_UPPERCASE_REGISTERS,
/**
* Controls the letter-case for typecasts.
*
* Pass `ZYAN_TRUE` as value to format in uppercase or `ZYAN_FALSE` to format in lowercase.
*/
ZYDIS_FORMATTER_PROP_UPPERCASE_TYPECASTS,
/**
* Controls the letter-case for decorators.
*
* Pass `ZYAN_TRUE` as value to format in uppercase or `ZYAN_FALSE` to format in lowercase.
*/
ZYDIS_FORMATTER_PROP_UPPERCASE_DECORATORS,
/* ---------------------------------------------------------------------------------------- */
/* Number formatting */
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the prefix for decimal values.
*
* Pass a pointer to a null-terminated C-style string with a maximum length of 10 characters
* to set a custom prefix, or `ZYAN_NULL` to disable it.
*
* The string is deep-copied into an internal buffer.
*/
ZYDIS_FORMATTER_PROP_DEC_PREFIX,
/**
* Controls the suffix for decimal values.
*
* Pass a pointer to a null-terminated C-style string with a maximum length of 10 characters
* to set a custom suffix, or `ZYAN_NULL` to disable it.
*
* The string is deep-copied into an internal buffer.
*/
ZYDIS_FORMATTER_PROP_DEC_SUFFIX,
/* ---------------------------------------------------------------------------------------- */
/**
* Controls the letter-case of hexadecimal values.
*
* Pass `ZYAN_TRUE` as value to format in uppercase and `ZYAN_FALSE` to format in lowercase.
*
* The default value is `ZYAN_TRUE`.
*/
ZYDIS_FORMATTER_PROP_HEX_UPPERCASE,
/**
* Controls whether to prepend hexadecimal values with a leading zero if the first character
* is non-numeric.
*
* Pass `ZYAN_TRUE` to prepend a leading zero if the first character is non-numeric or
* `ZYAN_FALSE` to disable this functionality.
*
* The default value is `ZYAN_FALSE`.
*/
ZYDIS_FORMATTER_PROP_HEX_FORCE_LEADING_NUMBER,
/**
* Controls the prefix for hexadecimal values.
*
* Pass a pointer to a null-terminated C-style string with a maximum length of 10 characters
* to set a custom prefix, or `ZYAN_NULL` to disable it.
*
* The string is deep-copied into an internal buffer.
*/
ZYDIS_FORMATTER_PROP_HEX_PREFIX,
/**
* Controls the suffix for hexadecimal values.
*
* Pass a pointer to a null-terminated C-style string with a maximum length of 10 characters
* to set a custom suffix, or `ZYAN_NULL` to disable it.
*
* The string is deep-copied into an internal buffer.
*/
ZYDIS_FORMATTER_PROP_HEX_SUFFIX,
/* ---------------------------------------------------------------------------------------- */
/**
* Maximum value of this enum.
*/
ZYDIS_FORMATTER_PROP_MAX_VALUE = ZYDIS_FORMATTER_PROP_HEX_SUFFIX,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_FORMATTER_PROP_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_FORMATTER_PROP_MAX_VALUE)
} ZydisFormatterProperty;
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum defining different mantissae to be used during formatting.
*/
typedef enum ZydisNumericBase_
{
/**
* Decimal system.
*/
ZYDIS_NUMERIC_BASE_DEC,
/**
* Hexadecimal system.
*/
ZYDIS_NUMERIC_BASE_HEX,
/**
* Maximum value of this enum.
*/
ZYDIS_NUMERIC_BASE_MAX_VALUE = ZYDIS_NUMERIC_BASE_HEX,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_NUMERIC_BASE_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_NUMERIC_BASE_MAX_VALUE)
} ZydisNumericBase;
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum defining the signeness of integers to be used during formatting.
*/
typedef enum ZydisSignedness_
{
/**
* Automatically choose the most suitable mode based on the operands
* ZydisDecodedOperand.imm.is_signed` attribute.
*/
ZYDIS_SIGNEDNESS_AUTO,
/**
* Force signed values.
*/
ZYDIS_SIGNEDNESS_SIGNED,
/**
* Force unsigned values.
*/
ZYDIS_SIGNEDNESS_UNSIGNED,
/**
* Maximum value of this enum.
*/
ZYDIS_SIGNEDNESS_MAX_VALUE = ZYDIS_SIGNEDNESS_UNSIGNED,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_SIGNEDNESS_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_SIGNEDNESS_MAX_VALUE)
} ZydisSignedness;
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum definining magic values that receive special treatment when used as padding properties
* of the formatter.
*/
typedef enum ZydisPadding_
{
/**
* Disables padding.
*/
ZYDIS_PADDING_DISABLED = 0,
/**
* Padds the value to the current stack-width for addresses, or to the
* operand-width for immediate values (hexadecimal only).
*/
ZYDIS_PADDING_AUTO = (-1),
/**
* Maximum value of this enum.
*/
ZYDIS_PADDING_MAX_VALUE = ZYDIS_PADDING_AUTO,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_PADDING_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_PADDING_MAX_VALUE)
} ZydisPadding;
/* ---------------------------------------------------------------------------------------------- */
/* Function types */
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum selecting a formatter function to be replaced with hooks.
*
* Do NOT change the order of the values this enum or the function fields inside the
* `ZydisFormatter` struct.
*/
typedef enum ZydisFormatterFunction_
{
/* ---------------------------------------------------------------------------------------- */
/* Instruction */
/* ---------------------------------------------------------------------------------------- */
/**
* This function is invoked before the formatter formats an instruction.
*/
ZYDIS_FORMATTER_FUNC_PRE_INSTRUCTION,
/**
* This function is invoked after the formatter formatted an instruction.
*/
ZYDIS_FORMATTER_FUNC_POST_INSTRUCTION,
/* ---------------------------------------------------------------------------------------- */
/**
* This function refers to the main formatting function.
*
* Replacing this function allows for complete custom formatting, but indirectly disables all
* other hooks except for `ZYDIS_FORMATTER_FUNC_PRE_INSTRUCTION` and
* `ZYDIS_FORMATTER_FUNC_POST_INSTRUCTION`.
*/
ZYDIS_FORMATTER_FUNC_FORMAT_INSTRUCTION,
/* ---------------------------------------------------------------------------------------- */
/* Operands */
/* ---------------------------------------------------------------------------------------- */
/**
* This function is invoked before the formatter formats an operand.
*/
ZYDIS_FORMATTER_FUNC_PRE_OPERAND,
/**
* This function is invoked after the formatter formatted an operand.
*/
ZYDIS_FORMATTER_FUNC_POST_OPERAND,
/* ---------------------------------------------------------------------------------------- */
/**
* This function is invoked to format a register operand.
*/
ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_REG,
/**
* This function is invoked to format a memory operand.
*
* Replacing this function might indirectly disable some specific calls to the
* `ZYDIS_FORMATTER_FUNC_PRINT_TYPECAST`, `ZYDIS_FORMATTER_FUNC_PRINT_SEGMENT`,
* `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS` and `ZYDIS_FORMATTER_FUNC_PRINT_DISP` functions.
*/
ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_MEM,
/**
* This function is invoked to format a pointer operand.
*/
ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_PTR,
/**
* This function is invoked to format an immediate operand.
*
* Replacing this function might indirectly disable some specific calls to the
* `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS`, `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_REL` and
* `ZYDIS_FORMATTER_FUNC_PRINT_IMM` functions.
*/
ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_IMM,
/* ---------------------------------------------------------------------------------------- */
/* Elemental tokens */
/* ---------------------------------------------------------------------------------------- */
/**
* This function is invoked to print the instruction mnemonic.
*/
ZYDIS_FORMATTER_FUNC_PRINT_MNEMONIC,
/* ---------------------------------------------------------------------------------------- */
/**
* This function is invoked to print a register.
*/
ZYDIS_FORMATTER_FUNC_PRINT_REGISTER,
/**
* This function is invoked to print absolute addresses.
*
* Conditionally invoked, if a runtime-address different to `ZYDIS_RUNTIME_ADDRESS_NONE` was
* passed:
* - `IMM` operands with relative address (e.g. `JMP`, `CALL`, ...)
* - `MEM` operands with `EIP`/`RIP`-relative address (e.g. `MOV RAX, [RIP+0x12345678]`)
*
* Always invoked for:
* - `MEM` operands with absolute address (e.g. `MOV RAX, [0x12345678]`)
*/
ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS,
/**
* This function is invoked to print relative addresses.
*
* Conditionally invoked, if `ZYDIS_RUNTIME_ADDRESS_NONE` was passed as runtime-address:
* - `IMM` operands with relative address (e.g. `JMP`, `CALL`, ...)
*/
ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_REL,
/**
* This function is invoked to print a memory displacement value.
*
* If the memory displacement contains an address and a runtime-address different to
* `ZYDIS_RUNTIME_ADDRESS_NONE` was passed, `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS` is called
* instead.
*/
ZYDIS_FORMATTER_FUNC_PRINT_DISP,
/**
* This function is invoked to print an immediate value.
*
* If the immediate contains an address and a runtime-address different to
* `ZYDIS_RUNTIME_ADDRESS_NONE` was passed, `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS` is called
* instead.
*
* If the immediate contains an address and `ZYDIS_RUNTIME_ADDRESS_NONE` was passed as
* runtime-address, `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_REL` is called instead.
*/
ZYDIS_FORMATTER_FUNC_PRINT_IMM,
/* ---------------------------------------------------------------------------------------- */
/* Optional tokens */
/* ---------------------------------------------------------------------------------------- */
/**
* This function is invoked to print the size of a memory operand (`INTEL` only).
*/
ZYDIS_FORMATTER_FUNC_PRINT_TYPECAST,
/**
* This function is invoked to print the segment-register of a memory operand.
*/
ZYDIS_FORMATTER_FUNC_PRINT_SEGMENT,
/**
* This function is invoked to print the instruction prefixes.
*/
ZYDIS_FORMATTER_FUNC_PRINT_PREFIXES,
/**
* This function is invoked after formatting an operand to print a `EVEX`/`MVEX`
* decorator.
*/
ZYDIS_FORMATTER_FUNC_PRINT_DECORATOR,
/* ---------------------------------------------------------------------------------------- */
/**
* Maximum value of this enum.
*/
ZYDIS_FORMATTER_FUNC_MAX_VALUE = ZYDIS_FORMATTER_FUNC_PRINT_DECORATOR,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_FORMATTER_FUNC_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_FORMATTER_FUNC_MAX_VALUE)
} ZydisFormatterFunction;
/* ---------------------------------------------------------------------------------------------- */
/* Decorator types */
/* ---------------------------------------------------------------------------------------------- */
/**
* Enum of all decorator types.
*/
typedef enum ZydisDecorator_
{
ZYDIS_DECORATOR_INVALID,
/**
* The embedded-mask decorator.
*/
ZYDIS_DECORATOR_MASK,
/**
* The broadcast decorator.
*/
ZYDIS_DECORATOR_BC,
/**
* The rounding-control decorator.
*/
ZYDIS_DECORATOR_RC,
/**
* The suppress-all-exceptions decorator.
*/
ZYDIS_DECORATOR_SAE,
/**
* The register-swizzle decorator.
*/
ZYDIS_DECORATOR_SWIZZLE,
/**
* The conversion decorator.
*/
ZYDIS_DECORATOR_CONVERSION,
/**
* The eviction-hint decorator.
*/
ZYDIS_DECORATOR_EH,
/**
* Maximum value of this enum.
*/
ZYDIS_DECORATOR_MAX_VALUE = ZYDIS_DECORATOR_EH,
/**
* The minimum number of bits required to represent all values of this enum.
*/
ZYDIS_DECORATOR_REQUIRED_BITS = ZYAN_BITS_TO_REPRESENT(ZYDIS_DECORATOR_MAX_VALUE)
} ZydisDecorator;
/* ---------------------------------------------------------------------------------------------- */
/* Formatter context */
/* ---------------------------------------------------------------------------------------------- */
typedef struct ZydisFormatter_ ZydisFormatter;
/**
* Context structure that that is passed to all formatter.
*/
typedef struct ZydisFormatterContext_
{
/**
* A pointer to the `ZydisDecodedInstruction` struct.
*/
const ZydisDecodedInstruction* instruction;
/**
* A pointer to the first `ZydisDecodedOperand` struct of the instruction.
*/
const ZydisDecodedOperand* operands;
/**
* A pointer to the `ZydisDecodedOperand` struct.
*/
const ZydisDecodedOperand* operand;
/**
* The runtime address of the instruction.
*/
ZyanU64 runtime_address;
/**
* A pointer to user-defined data.
*
* This is the value that was previously passed as the `user_data` argument to
* @ref ZydisFormatterFormatInstruction or @ref ZydisFormatterTokenizeOperand.
*/
void* user_data;
} ZydisFormatterContext;
/* ---------------------------------------------------------------------------------------------- */
/* Function prototypes */
/* ---------------------------------------------------------------------------------------------- */
/**
* Defines the `ZydisFormatterFunc` function prototype.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
* @param context A pointer to the `ZydisFormatterContext` struct.
*
* @return A zyan status code.
*
* Returning a status code other than `ZYAN_STATUS_SUCCESS` will immediately cause the formatting
* process to fail (see exceptions below).
*
* Returning `ZYDIS_STATUS_SKIP_TOKEN` is valid for functions of the following types and will
* instruct the formatter to omit the whole operand:
* - `ZYDIS_FORMATTER_FUNC_PRE_OPERAND`
* - `ZYDIS_FORMATTER_FUNC_POST_OPERAND`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_REG`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_MEM`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_PTR`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_IMM`
*
* This function prototype is used by functions of the following types:
* - `ZYDIS_FORMATTER_FUNC_PRE_INSTRUCTION`
* - `ZYDIS_FORMATTER_FUNC_POST_INSTRUCTION`
* - `ZYDIS_FORMATTER_FUNC_PRE_OPERAND`
* - `ZYDIS_FORMATTER_FUNC_POST_OPERAND`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_INSTRUCTION`
* - `ZYDIS_FORMATTER_FUNC_PRINT_MNEMONIC`
* - `ZYDIS_FORMATTER_FUNC_PRINT_PREFIXES`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_REG`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_MEM`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_PTR`
* - `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_IMM`
* - `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS`
* - `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_REL`
* - `ZYDIS_FORMATTER_FUNC_PRINT_DISP`
* - `ZYDIS_FORMATTER_FUNC_PRINT_IMM`
* - `ZYDIS_FORMATTER_FUNC_PRINT_TYPECAST`
* - `ZYDIS_FORMATTER_FUNC_PRINT_SEGMENT`
*/
typedef ZyanStatus (*ZydisFormatterFunc)(const ZydisFormatter* formatter,
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context);
/**
* Defines the `ZydisFormatterRegisterFunc` function prototype.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
* @param context A pointer to the `ZydisFormatterContext` struct.
* @param reg The register.
*
* @return Returning a status code other than `ZYAN_STATUS_SUCCESS` will immediately cause the
* formatting process to fail.
*
* This function prototype is used by functions of the following types:
* - `ZYDIS_FORMATTER_FUNC_PRINT_REGISTER`.
*/
typedef ZyanStatus (*ZydisFormatterRegisterFunc)(const ZydisFormatter* formatter,
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context, ZydisRegister reg);
/**
* Defines the `ZydisFormatterDecoratorFunc` function prototype.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param buffer A pointer to the `ZydisFormatterBuffer` struct.
* @param context A pointer to the `ZydisFormatterContext` struct.
* @param decorator The decorator type.
*
* @return Returning a status code other than `ZYAN_STATUS_SUCCESS` will immediately cause the
* formatting process to fail.
*
* This function type is used for:
* - `ZYDIS_FORMATTER_FUNC_PRINT_DECORATOR`
*/
typedef ZyanStatus (*ZydisFormatterDecoratorFunc)(const ZydisFormatter* formatter,
ZydisFormatterBuffer* buffer, ZydisFormatterContext* context, ZydisDecorator decorator);
/* ---------------------------------------------------------------------------------------------- */
/* Formatter struct */
/* ---------------------------------------------------------------------------------------------- */
/**
* Context structure keeping track of internal state of the formatter.
*
* All fields in this struct should be considered as "private". Any changes may lead to unexpected
* behavior.
*
* Do NOT change the order of the function fields or the values of the `ZydisFormatterFunction`
* enum.
*/
struct ZydisFormatter_
{
/**
* The formatter style.
*/
ZydisFormatterStyle style;
/**
* The `ZYDIS_FORMATTER_PROP_FORCE_SIZE` property.
*/
ZyanBool force_memory_size;
/**
* The `ZYDIS_FORMATTER_PROP_FORCE_SEGMENT` property.
*/
ZyanBool force_memory_segment;
/**
* The `ZYDIS_FORMATTER_PROP_FORCE_SCALE_ONE` property.
*/
ZyanBool force_memory_scale;
/**
* The `ZYDIS_FORMATTER_PROP_FORCE_RELATIVE_BRANCHES` property.
*/
ZyanBool force_relative_branches;
/**
* The `ZYDIS_FORMATTER_PROP_FORCE_RELATIVE_RIPREL` property.
*/
ZyanBool force_relative_riprel;
/**
* The `ZYDIS_FORMATTER_PROP_PRINT_BRANCH_SIZE` property.
*/
ZyanBool print_branch_size;
/**
* The `ZYDIS_FORMATTER_DETAILED_PREFIXES` property.
*/
ZyanBool detailed_prefixes;
/**
* The `ZYDIS_FORMATTER_ADDR_BASE` property.
*/
ZydisNumericBase addr_base;
/**
* The `ZYDIS_FORMATTER_ADDR_SIGNEDNESS` property.
*/
ZydisSignedness addr_signedness;
/**
* The `ZYDIS_FORMATTER_ADDR_PADDING_ABSOLUTE` property.
*/
ZydisPadding addr_padding_absolute;
/**
* The `ZYDIS_FORMATTER_ADDR_PADDING_RELATIVE` property.
*/
ZydisPadding addr_padding_relative;
/**
* The `ZYDIS_FORMATTER_DISP_BASE` property.
*/
ZydisNumericBase disp_base;
/**
* The `ZYDIS_FORMATTER_DISP_SIGNEDNESS` property.
*/
ZydisSignedness disp_signedness;
/**
* The `ZYDIS_FORMATTER_DISP_PADDING` property.
*/
ZydisPadding disp_padding;
/**
* The `ZYDIS_FORMATTER_IMM_BASE` property.
*/
ZydisNumericBase imm_base;
/**
* The `ZYDIS_FORMATTER_IMM_SIGNEDNESS` property.
*/
ZydisSignedness imm_signedness;
/**
* The `ZYDIS_FORMATTER_IMM_PADDING` property.
*/
ZydisPadding imm_padding;
/**
* The `ZYDIS_FORMATTER_UPPERCASE_PREFIXES` property.
*/
ZyanI32 case_prefixes;
/**
* The `ZYDIS_FORMATTER_UPPERCASE_MNEMONIC` property.
*/
ZyanI32 case_mnemonic;
/**
* The `ZYDIS_FORMATTER_UPPERCASE_REGISTERS` property.
*/
ZyanI32 case_registers;
/**
* The `ZYDIS_FORMATTER_UPPERCASE_TYPECASTS` property.
*/
ZyanI32 case_typecasts;
/**
* The `ZYDIS_FORMATTER_UPPERCASE_DECORATORS` property.
*/
ZyanI32 case_decorators;
/**
* The `ZYDIS_FORMATTER_HEX_UPPERCASE` property.
*/
ZyanBool hex_uppercase;
/**
* The `ZYDIS_FORMATTER_HEX_FORCE_LEADING_NUMBER` property.
*/
ZyanBool hex_force_leading_number;
/**
* The number formats for all numeric bases.
*
* Index 0 = prefix
* Index 1 = suffix
*/
struct
{
/**
* A pointer to the `ZyanStringView` to use as prefix/suffix.
*/
const ZyanStringView* string;
/**
* The `ZyanStringView` to use as prefix/suffix
*/
ZyanStringView string_data;
/**
* The actual string data.
*/
char buffer[11];
} number_format[ZYDIS_NUMERIC_BASE_MAX_VALUE + 1][2];
/**
* The `ZYDIS_FORMATTER_FUNC_PRE_INSTRUCTION` function.
*/
ZydisFormatterFunc func_pre_instruction;
/**
* The `ZYDIS_FORMATTER_FUNC_POST_INSTRUCTION` function.
*/
ZydisFormatterFunc func_post_instruction;
/**
* The `ZYDIS_FORMATTER_FUNC_FORMAT_INSTRUCTION` function.
*/
ZydisFormatterFunc func_format_instruction;
/**
* The `ZYDIS_FORMATTER_FUNC_PRE_OPERAND` function.
*/
ZydisFormatterFunc func_pre_operand;
/**
* The `ZYDIS_FORMATTER_FUNC_POST_OPERAND` function.
*/
ZydisFormatterFunc func_post_operand;
/**
* The `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_REG` function.
*/
ZydisFormatterFunc func_format_operand_reg;
/**
* The `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_MEM` function.
*/
ZydisFormatterFunc func_format_operand_mem;
/**
* The `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_PTR` function.
*/
ZydisFormatterFunc func_format_operand_ptr;
/**
* The `ZYDIS_FORMATTER_FUNC_FORMAT_OPERAND_IMM` function.
*/
ZydisFormatterFunc func_format_operand_imm;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_MNEMONIC function.
*/
ZydisFormatterFunc func_print_mnemonic;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_REGISTER` function.
*/
ZydisFormatterRegisterFunc func_print_register;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_ABS` function.
*/
ZydisFormatterFunc func_print_address_abs;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_ADDRESS_REL` function.
*/
ZydisFormatterFunc func_print_address_rel;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_DISP` function.
*/
ZydisFormatterFunc func_print_disp;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_IMM` function.
*/
ZydisFormatterFunc func_print_imm;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_TYPECAST` function.
*/
ZydisFormatterFunc func_print_typecast;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_SEGMENT` function.
*/
ZydisFormatterFunc func_print_segment;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_PREFIXES` function.
*/
ZydisFormatterFunc func_print_prefixes;
/**
* The `ZYDIS_FORMATTER_FUNC_PRINT_DECORATOR` function.
*/
ZydisFormatterDecoratorFunc func_print_decorator;
};
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
/* Exported functions */
/* ============================================================================================== */
/**
* @addtogroup formatter Formatter
* Functions allowing formatting of previously decoded instructions to human readable text.
* @{
*/
/* ---------------------------------------------------------------------------------------------- */
/* Initialization */
/* ---------------------------------------------------------------------------------------------- */
/**
* Initializes the given `ZydisFormatter` instance.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param style The base formatter style (either `AT&T` or `Intel` style).
*
* @return A zyan status code.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterInit(ZydisFormatter* formatter, ZydisFormatterStyle style);
/* ---------------------------------------------------------------------------------------------- */
/* Setter */
/* ---------------------------------------------------------------------------------------------- */
/**
* Changes the value of the specified formatter `property`.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param property The id of the formatter-property.
* @param value The new value.
*
* @return A zyan status code.
*
* This function returns `ZYAN_STATUS_INVALID_OPERATION` if a property can't be changed for the
* current formatter-style.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterSetProperty(ZydisFormatter* formatter,
ZydisFormatterProperty property, ZyanUPointer value);
/**
* Replaces a formatter function with a custom callback and/or retrieves the currently
* used function.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param type The formatter function-type.
* @param callback A pointer to a variable that contains the pointer of the callback function
* and receives the pointer of the currently used function.
*
* @return A zyan status code.
*
* Call this function with `callback` pointing to a `ZYAN_NULL` value to retrieve the currently
* used function without replacing it.
*
* This function returns `ZYAN_STATUS_INVALID_OPERATION` if a function can't be replaced for the
* current formatter-style.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterSetHook(ZydisFormatter* formatter,
ZydisFormatterFunction type, const void** callback);
/* ---------------------------------------------------------------------------------------------- */
/* Formatting */
/* ---------------------------------------------------------------------------------------------- */
/**
* Formats the given instruction and writes it into the output buffer.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operands A pointer to the decoded operands array.
* @param operand_count The length of the `operands` array. Must be equal to or greater than
* the value of `instruction->operand_count_visible`.
* @param buffer A pointer to the output buffer.
* @param length The length of the output buffer (in characters).
* @param runtime_address The runtime address of the instruction or `ZYDIS_RUNTIME_ADDRESS_NONE`
* to print relative addresses.
* @param user_data A pointer to user-defined data which can be used in custom formatter
* callbacks. Can be `ZYAN_NULL`.
*
* @return A zyan status code.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterFormatInstruction(const ZydisFormatter* formatter,
const ZydisDecodedInstruction* instruction, const ZydisDecodedOperand* operands,
ZyanU8 operand_count, char* buffer, ZyanUSize length, ZyanU64 runtime_address,
void* user_data);
/**
* Formats the given operand and writes it into the output buffer.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operand A pointer to the `ZydisDecodedOperand` struct of the operand to format.
* @param buffer A pointer to the output buffer.
* @param length The length of the output buffer (in characters).
* @param runtime_address The runtime address of the instruction or `ZYDIS_RUNTIME_ADDRESS_NONE`
* to print relative addresses.
* @param user_data A pointer to user-defined data which can be used in custom formatter
* callbacks. Can be `ZYAN_NULL`.
*
* @return A zyan status code.
*
* Use `ZydisFormatterFormatInstruction` or `ZydisFormatterFormatInstructionEx` to format a
* complete instruction.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterFormatOperand(const ZydisFormatter* formatter,
const ZydisDecodedInstruction* instruction, const ZydisDecodedOperand* operand,
char* buffer, ZyanUSize length, ZyanU64 runtime_address, void* user_data);
/* ---------------------------------------------------------------------------------------------- */
/* Tokenizing */
/* ---------------------------------------------------------------------------------------------- */
/**
* Tokenizes the given instruction and writes it into the output buffer.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operands A pointer to the decoded operands array.
* @param operand_count The length of the `operands` array. Must be equal to or greater than
* the value of `instruction->operand_count_visible`.
* @param buffer A pointer to the output buffer.
* @param length The length of the output buffer (in bytes).
* @param runtime_address The runtime address of the instruction or `ZYDIS_RUNTIME_ADDRESS_NONE`
* to print relative addresses.
* @param token Receives a pointer to the first token in the output buffer.
* @param user_data A pointer to user-defined data which can be used in custom formatter
* callbacks. Can be `ZYAN_NULL`.
*
* @return A zyan status code.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterTokenizeInstruction(const ZydisFormatter* formatter,
const ZydisDecodedInstruction* instruction, const ZydisDecodedOperand* operands,
ZyanU8 operand_count, void* buffer, ZyanUSize length, ZyanU64 runtime_address,
ZydisFormatterTokenConst** token, void* user_data);
/**
* Tokenizes the given operand and writes it into the output buffer.
*
* @param formatter A pointer to the `ZydisFormatter` instance.
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operand A pointer to the `ZydisDecodedOperand` struct of the operand to format.
* @param buffer A pointer to the output buffer.
* @param length The length of the output buffer (in bytes).
* @param runtime_address The runtime address of the instruction or `ZYDIS_RUNTIME_ADDRESS_NONE`
* to print relative addresses.
* @param token Receives a pointer to the first token in the output buffer.
* @param user_data A pointer to user-defined data which can be used in custom formatter
* callbacks. Can be `ZYAN_NULL`.
*
* @return A zyan status code.
*
* Use `ZydisFormatterTokenizeInstruction` to tokenize a complete instruction.
*/
ZYDIS_EXPORT ZyanStatus ZydisFormatterTokenizeOperand(const ZydisFormatter* formatter,
const ZydisDecodedInstruction* instruction, const ZydisDecodedOperand* operand,
void* buffer, ZyanUSize length, ZyanU64 runtime_address, ZydisFormatterTokenConst** token,
void* user_data);
/* ---------------------------------------------------------------------------------------------- */
/**
* @}
*/
/* ============================================================================================== */
#ifdef __cplusplus
}
#endif
#endif /* ZYDIS_FORMATTER_H */
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