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ZydisInfo.c
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/***************************************************************************************************
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
* Disassembles a given hex-buffer and prints detailed information about the decoded
* instruction, the operands and additional attributes.
*/
#include <inttypes.h>
#include <Zycore/API/Terminal.h>
#include <Zycore/LibC.h>
#include <Zydis/Zydis.h>
/* ============================================================================================== */
/* Colors */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Configuration */
/* ---------------------------------------------------------------------------------------------- */
#define COLOR_DEFAULT ZYAN_VT100SGR_FG_DEFAULT
#define COLOR_ERROR ZYAN_VT100SGR_FG_BRIGHT_RED
#define COLOR_HEADER ZYAN_VT100SGR_FG_DEFAULT
#define COLOR_HEADER_TITLE ZYAN_VT100SGR_FG_CYAN
#define COLOR_VALUE_LABEL ZYAN_VT100SGR_FG_DEFAULT
#define COLOR_VALUE_R ZYAN_VT100SGR_FG_BRIGHT_RED
#define COLOR_VALUE_G ZYAN_VT100SGR_FG_BRIGHT_GREEN
#define COLOR_VALUE_B ZYAN_VT100SGR_FG_CYAN
/* ---------------------------------------------------------------------------------------------- */
/* Global variables */
/* ---------------------------------------------------------------------------------------------- */
static ZyanBool g_vt100_stdout;
static ZyanBool g_vt100_stderr;
/* ---------------------------------------------------------------------------------------------- */
/* Helper macros */
/* ---------------------------------------------------------------------------------------------- */
/**
* Conditionally expands to the passed VT100 sequence, if `g_colors_stdout` is
* `ZYAN_TRUE`, or an empty string, if not.
*
* @param The VT100 SGT sequence.
*/
#define CVT100_OUT(sequence) (g_vt100_stdout ? (sequence) : "")
/**
* Conditionally expands to the passed VT100 sequence, if `g_colors_stderr` is
* `ZYAN_TRUE`, or an empty string, if not.
*
* @param The VT100 SGT sequence.
*/
#define CVT100_ERR(sequence) (g_vt100_stderr ? (sequence) : "")
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
/* Helper functions */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* General */
/* ---------------------------------------------------------------------------------------------- */
/**
* Formats the given zyan status code to a human readable string.
*
* @param status The zyan status code.
*
* @return The status code string.
*/
static const char* FormatZyanStatus(ZyanStatus status)
{
static const char* strings_zycore[] =
{
/* 00 */ "SUCCESS",
/* 01 */ "FAILED",
/* 02 */ "TRUE",
/* 03 */ "FALSE",
/* 04 */ "INVALID_ARGUMENT",
/* 05 */ "INVALID_OPERATION",
/* 06 */ "NOT_FOUND",
/* 07 */ "OUT_OF_RANGE",
/* 08 */ "INSUFFICIENT_BUFFER_SIZE",
/* 09 */ "NOT_ENOUGH_MEMORY",
/* 0A */ "NOT_ENOUGH_MEMORY",
/* 0B */ "BAD_SYSTEMCALL"
};
static const char* strings_zydis[] =
{
/* 00 */ "NO_MORE_DATA",
/* 01 */ "DECODING_ERROR",
/* 02 */ "INSTRUCTION_TOO_LONG",
/* 03 */ "BAD_REGISTER",
/* 04 */ "ILLEGAL_LOCK",
/* 05 */ "ILLEGAL_LEGACY_PFX",
/* 06 */ "ILLEGAL_REX",
/* 07 */ "INVALID_MAP",
/* 08 */ "MALFORMED_EVEX",
/* 09 */ "MALFORMED_MVEX",
/* 0A */ "INVALID_MASK",
/* 0B */ "SKIP_TOKEN",
/* 0C */ "IMPOSSIBLE_INSTRUCTION"
};
if (ZYAN_STATUS_MODULE(status) == ZYAN_MODULE_ZYCORE)
{
status = ZYAN_STATUS_CODE(status);
ZYAN_ASSERT(status < ZYAN_ARRAY_LENGTH(strings_zycore));
return strings_zycore[status];
}
if (ZYAN_STATUS_MODULE(status) == ZYAN_MODULE_ZYDIS)
{
status = ZYAN_STATUS_CODE(status);
ZYAN_ASSERT(status < ZYAN_ARRAY_LENGTH(strings_zydis));
return strings_zydis[status];
}
ZYAN_UNREACHABLE;
}
/**
* Returns the action string for a specific CPU/FPU flag.
*
* @param accessed_flags A pointer to the `ZydisAccessedFlags` struct.
* @param flag The number of the flag.
*
* @return The action string for the requested flag, or `ZYAN_NULL`.
*/
static const char* GetAccessedFlagActionString(const ZydisAccessedFlags* accessed_flags,
ZyanU8 flag)
{
ZYAN_ASSERT(flag < 32);
const char* result = ZYAN_NULL;
if (accessed_flags->tested & (1 << flag))
{
result = "T";
}
if (accessed_flags->modified & (1 << flag))
{
result = (result == ZYAN_NULL) ? "M" : "T_M";
return result;
}
if (accessed_flags->set_0 & (1 << flag))
{
return "0";
}
if (accessed_flags->set_1 & (1 << flag))
{
return "1";
}
if (accessed_flags->undefined & (1 << flag))
{
return "U";
}
return result;
}
/* ---------------------------------------------------------------------------------------------- */
/* Text output */
/* ---------------------------------------------------------------------------------------------- */
/**
* Prints the given error message and status code.
* @param status The status code.
* @param message The error message.
*/
static void PrintStatusError(ZyanStatus status, const char* message)
{
ZYAN_ASSERT(ZYAN_FAILED(status));
if (ZYAN_STATUS_MODULE(status) >= ZYAN_MODULE_USER)
{
ZYAN_FPRINTF(ZYAN_STDERR,
"%s%s: User defined status code [0x%" PRIx32 "]%s\n",
CVT100_ERR(COLOR_ERROR), message, status,
CVT100_ERR(ZYAN_VT100SGR_RESET));
}
else
{
ZYAN_FPRINTF(ZYAN_STDERR, "%s%s: %s [0x%" PRIx32 "]%s\n",
CVT100_ERR(COLOR_ERROR), message, FormatZyanStatus(status), status,
CVT100_ERR(ZYAN_VT100SGR_RESET));
}
}
/**
* Prints a section header.
*
* @param name The section name.
*/
static void PrintSectionHeader(const char* name)
{
ZYAN_ASSERT(ZYAN_STRLEN(name) <= 8);
ZYAN_PRINTF("%s== [ %s%8s%s ] ==============================================================" \
"==============================%s\n",
CVT100_OUT(COLOR_HEADER), CVT100_OUT(COLOR_HEADER_TITLE), name, CVT100_OUT(COLOR_HEADER),
CVT100_OUT(COLOR_DEFAULT));
}
/**
* Prints a value label.
*
* @param name The value name.
*/
static void PrintValueLabel(const char* name)
{
ZYAN_ASSERT(ZYAN_STRLEN(name) <= 11);
ZYAN_PRINTF("%s%11s:%s ", CVT100_OUT(COLOR_VALUE_LABEL), name, CVT100_OUT(COLOR_DEFAULT));
}
/**
* Prints a formatted value using red color.
*
* @param name The value name.
* @param format The format string.
* @param ... The format arguments.
*/
#define PRINT_VALUE_R(name, format, ...) \
PrintValueLabel(name); \
ZYAN_PRINTF("%s" format "%s\n", CVT100_OUT(COLOR_VALUE_R), __VA_ARGS__, \
CVT100_OUT(COLOR_DEFAULT));
/**
* Prints a formatted value using green color.
*
* @param name The value name.
* @param format The format string.
* @param ... The format arguments.
*/
#define PRINT_VALUE_G(name, format, ...) \
PrintValueLabel(name); \
ZYAN_PRINTF("%s" format "%s\n", CVT100_OUT(COLOR_VALUE_G), __VA_ARGS__, \
CVT100_OUT(COLOR_DEFAULT));
/**
* Prints a formatted value using blue color.
*
* @param name The value name.
* @param format The format string.
* @param ... The format arguments.
*/
#define PRINT_VALUE_B(name, format, ...) \
PrintValueLabel(name); \
ZYAN_PRINTF("%s" format "%s\n", CVT100_OUT(COLOR_VALUE_B), __VA_ARGS__, \
CVT100_OUT(COLOR_DEFAULT));
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
/* Print functions */
/* ============================================================================================== */
/**
* Prints instruction segments (parts).
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param buffer The buffer that contains the instruction bytes.
* @param print_hints Controls the printing of descriptive hints.
*/
static void PrintSegments(const ZydisDecodedInstruction* instruction, const ZyanU8* buffer,
ZyanBool print_hints)
{
ZydisInstructionSegments segments;
ZydisGetInstructionSegments(instruction, &segments);
struct
{
ZyanU8 pos;
const char* color;
const char* name;
} print_info[ZYAN_ARRAY_LENGTH(segments.segments)];
ZyanU8 pos = 0;
ZyanU8 imm = 0;
for (ZyanU8 i = 0; i < segments.count; ++i)
{
print_info[i].pos = pos;
switch (segments.segments[i].type)
{
case ZYDIS_INSTR_SEGMENT_PREFIXES:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_MAGENTA);
print_info[i].name = "PREFIXES";
break;
case ZYDIS_INSTR_SEGMENT_REX:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_MAGENTA);
print_info[i].name = "REX";
break;
case ZYDIS_INSTR_SEGMENT_XOP:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_MAGENTA);
print_info[i].name = "XOP";
break;
case ZYDIS_INSTR_SEGMENT_VEX:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_MAGENTA);
print_info[i].name = "VEX";
break;
case ZYDIS_INSTR_SEGMENT_EVEX:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_MAGENTA);
print_info[i].name = "EVEX";
break;
case ZYDIS_INSTR_SEGMENT_MVEX:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_MAGENTA);
print_info[i].name = "MVEX";
break;
case ZYDIS_INSTR_SEGMENT_OPCODE:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_CYAN);
print_info[i].name = "OPCODE";
break;
case ZYDIS_INSTR_SEGMENT_MODRM:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_GREEN);
print_info[i].name = "MODRM";
break;
case ZYDIS_INSTR_SEGMENT_SIB:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_GREEN);
print_info[i].name = "SIB";
break;
case ZYDIS_INSTR_SEGMENT_DISPLACEMENT:
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_YELLOW);
print_info[i].name = "DISP";
break;
case ZYDIS_INSTR_SEGMENT_IMMEDIATE:
if (imm == 0)
{
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_YELLOW);
imm = 1;
} else
{
print_info[i].color = CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_YELLOW);
}
print_info[i].name = "IMM";
break;
default:
ZYAN_UNREACHABLE;
}
ZYAN_PRINTF("%s", print_info[i].color);
for (int j = 0; j < segments.segments[i].size; ++j)
{
if (segments.segments[i].type == ZYDIS_INSTR_SEGMENT_PREFIXES)
{
ZYAN_ASSERT(segments.segments[i].size <= instruction->raw.prefix_count);
switch (instruction->raw.prefixes[j].type)
{
case ZYDIS_PREFIX_TYPE_IGNORED:
ZYAN_PRINTF("%s%02X%s ", CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_BLACK),
buffer[segments.segments[i].offset + j], print_info[i].color);
pos += 3;
break;
case ZYDIS_PREFIX_TYPE_EFFECTIVE:
pos += (ZyanU8)ZYAN_PRINTF("%02X ", buffer[segments.segments[i].offset + j]);
break;
case ZYDIS_PREFIX_TYPE_MANDATORY:
ZYAN_PRINTF("%s%02X%s ",
CVT100_OUT(ZYAN_VT100SGR_FG_CYAN),
buffer[segments.segments[i].offset + j], print_info[i].color);
pos += 3;
break;
default:
ZYAN_UNREACHABLE;
}
} else
{
pos += (ZyanU8)ZYAN_PRINTF("%02X ", buffer[segments.segments[i].offset + j]);
}
}
}
ZYAN_PRINTF("%s\n", CVT100_OUT(COLOR_DEFAULT));
if (!print_hints)
{
return;
}
for (ZyanU8 i = 0; i < segments.count; ++i)
{
ZyanU8 j = 0;
ZyanU8 k = 0;
while (j <= print_info[segments.count - i - 1].pos)
{
if (j == print_info[k].pos)
{
ZYAN_PRINTF("%s:", print_info[k].color);
++k;
} else
{
ZYAN_PRINTF(" ");
}
++j;
}
ZYAN_PRINTF("..%s%s\n", print_info[segments.count - i - 1].color,
print_info[segments.count - i - 1].name);
}
ZYAN_PRINTF(CVT100_OUT(COLOR_DEFAULT));
}
/**
* Prints a size optimized form of the input instruction.
*
* @param decoder A pointer to the `ZydisDecoder` instance.
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operands A pointer to the `operands` array.
* @param operand_count The length of the `operands` array.
*/
static void PrintSizeOptimizedForm(const ZydisDecoder* decoder,
const ZydisDecodedInstruction* instruction, const ZydisDecodedOperand* operands,
ZyanU8 operand_count)
{
ZydisEncoderRequest request;
ZyanStatus status = ZydisEncoderDecodedInstructionToEncoderRequest(instruction, operands,
operand_count, &request);
if (!ZYAN_SUCCESS(status))
{
PrintStatusError(status, "Failed to craft encoder request");
exit(status);
}
ZyanU8 data[ZYDIS_MAX_INSTRUCTION_LENGTH];
ZyanUSize len = sizeof(data);
status = ZydisEncoderEncodeInstruction(&request, data, &len);
if (!ZYAN_SUCCESS(status))
{
PrintStatusError(status, "Could not encode instruction");
exit(status);
}
ZydisDecodedInstruction new_instruction;
status = ZydisDecoderDecodeFull(decoder, &data, len, &new_instruction, ZYAN_NULL, 0, 0);
if (!ZYAN_SUCCESS(status))
{
PrintStatusError(status, "Could not decode instruction");
exit(status);
}
PrintSegments(&new_instruction, &data[0], ZYAN_FALSE);
}
/**
* Prints instruction operands info.
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operands A pointer to the first `ZydisDecodedOperand` struct of the instruction.
*/
static void PrintOperands(const ZydisDecodedInstruction* instruction,
const ZydisDecodedOperand* operands)
{
PrintSectionHeader("OPERANDS");
ZYAN_PRINTF("%s## TYPE VISIBILITY ACTION ENCODING SIZE NELEM ELEMSZ ELEMTY" \
"PE VALUE%s\n", CVT100_OUT(COLOR_HEADER), CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF("%s-- --------- ---------- ------ ------------ ---- ----- ------ ------" \
"-- ---------------------------%s\n", CVT100_OUT(COLOR_HEADER), CVT100_OUT(COLOR_DEFAULT));
ZyanU8 imm_id = 0;
for (ZyanU8 i = 0; i < instruction->operand_count; ++i)
{
static const char* strings_operand_type[] =
{
"UNUSED",
"REGISTER",
"MEMORY",
"POINTER",
"IMMEDIATE"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_operand_type) == ZYDIS_OPERAND_TYPE_MAX_VALUE + 1);
static const char* strings_operand_visibility[] =
{
"INVALID",
"EXPLICIT",
"IMPLICIT",
"HIDDEN"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_operand_visibility) == ZYDIS_OPERAND_VISIBILITY_MAX_VALUE + 1);
static const char* strings_operand_actions[] =
{
"NONE", // 0 0 0 0
"R", // 0 0 0 1
"W", // 0 0 1 0
"RW", // 0 0 1 1
"CR", // 0 1 0 0
"-", // 0 1 0 1
"CRW", // 0 1 1 0
"-", // 0 1 1 1
"CW", // 1 0 0 0
"RCW", // 1 0 0 1
"-", // 1 0 1 0
"-", // 1 0 1 1
"CRCW", // 1 1 0 0
"-", // 1 1 0 1
"-" // 1 1 1 1
};
static const char* strings_element_type[] =
{
"INVALID",
"STRUCT",
"UINT",
"INT",
"FLOAT16",
"FLOAT32",
"FLOAT64",
"FLOAT80",
"LONGBCD",
"CC"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_element_type) == ZYDIS_ELEMENT_TYPE_MAX_VALUE + 1);
static const char* strings_operand_encoding[] =
{
"NONE",
"MODRM_REG",
"MODRM_RM",
"OPCODE",
"NDSNDD",
"IS4",
"MASK",
"DISP8",
"DISP16",
"DISP32",
"DISP64",
"DISP16_32_64",
"DISP32_32_64",
"DISP16_32_32",
"UIMM8",
"UIMM16",
"UIMM32",
"UIMM64",
"UIMM16_32_64",
"UIMM32_32_64",
"UIMM16_32_32",
"SIMM8",
"SIMM16",
"SIMM32",
"SIMM64",
"SIMM16_32_64",
"SIMM32_32_64",
"SIMM16_32_32",
"JIMM8",
"JIMM16",
"JIMM32",
"JIMM64",
"JIMM16_32_64",
"JIMM32_32_64",
"JIMM16_32_32"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_operand_encoding) == ZYDIS_OPERAND_ENCODING_MAX_VALUE + 1);
static const char* strings_memop_type[] =
{
"INVALID",
"MEM",
"AGEN",
"MIB",
"VSIB"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_memop_type) == ZYDIS_MEMOP_TYPE_MAX_VALUE + 1);
ZYAN_PRINTF("%s%2d %s%9s %10s %6s %12s %s%5d %4d %6d %s%8s%s",
CVT100_OUT(COLOR_VALUE_G),
i,
CVT100_OUT(COLOR_VALUE_B),
strings_operand_type[operands[i].type],
strings_operand_visibility[operands[i].visibility],
strings_operand_actions[operands[i].actions],
strings_operand_encoding[operands[i].encoding],
CVT100_OUT(COLOR_VALUE_G),
operands[i].size,
operands[i].element_count,
operands[i].element_size,
CVT100_OUT(COLOR_VALUE_B),
strings_element_type[operands[i].element_type],
CVT100_OUT(COLOR_DEFAULT));
switch (operands[i].type)
{
case ZYDIS_OPERAND_TYPE_REGISTER:
ZYAN_PRINTF(" %s%27s%s", CVT100_OUT(COLOR_VALUE_R),
ZydisRegisterGetString(operands[i].reg.value),
CVT100_OUT(COLOR_DEFAULT));
break;
case ZYDIS_OPERAND_TYPE_MEMORY:
ZYAN_PRINTF(" %sTYPE =%s%20s%s\n", CVT100_OUT(COLOR_VALUE_LABEL),
CVT100_OUT(COLOR_VALUE_B), strings_memop_type[operands[i].mem.type],
CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF(" %s%84s =%s%20s%s\n",
CVT100_OUT(COLOR_VALUE_LABEL), "SEG ", CVT100_OUT(COLOR_VALUE_R),
ZydisRegisterGetString(operands[i].mem.segment),
CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF(" %s%84s =%s%20s%s\n",
CVT100_OUT(COLOR_VALUE_LABEL), "BASE ", CVT100_OUT(COLOR_VALUE_R),
ZydisRegisterGetString(operands[i].mem.base),
CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF(" %s%84s =%s%20s%s\n",
CVT100_OUT(COLOR_VALUE_LABEL), "INDEX", CVT100_OUT(COLOR_VALUE_R),
ZydisRegisterGetString(operands[i].mem.index),
CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF(" %s%84s =%s%20d%s\n",
CVT100_OUT(COLOR_VALUE_LABEL), "SCALE", CVT100_OUT(COLOR_VALUE_G),
operands[i].mem.scale,
CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF(" %s%84s = %s0x%016" PRIX64 "%s",
CVT100_OUT(COLOR_VALUE_LABEL), "DISP ", CVT100_OUT(COLOR_VALUE_G),
operands[i].mem.disp.value,
CVT100_OUT(COLOR_DEFAULT));
break;
case ZYDIS_OPERAND_TYPE_POINTER:
ZYAN_PRINTF(" %sSEG = %s0x%04" PRIX16 "%s\n",
CVT100_OUT(COLOR_VALUE_LABEL), CVT100_OUT(COLOR_VALUE_G),
operands[i].ptr.segment,
CVT100_OUT(COLOR_DEFAULT));
ZYAN_PRINTF(" %s%84s = %s0x%08" PRIX32 "%s",
CVT100_OUT(COLOR_VALUE_LABEL), "OFF ", CVT100_OUT(COLOR_VALUE_G),
operands[i].ptr.offset,
CVT100_OUT(COLOR_DEFAULT));
break;
case ZYDIS_OPERAND_TYPE_IMMEDIATE:
if (operands[i].imm.is_signed)
{
ZYAN_PRINTF(" %s[%s%s %s %s%2d%s] %s0x%016" PRIX64 "%s",
CVT100_OUT(COLOR_VALUE_LABEL),
CVT100_OUT(COLOR_VALUE_B),
operands[i].imm.is_signed ? "S" : "U",
operands[i].imm.is_relative ? "R" : "A",
CVT100_OUT(COLOR_VALUE_G),
instruction->raw.imm[imm_id].size,
CVT100_OUT(COLOR_VALUE_LABEL),
CVT100_OUT(COLOR_VALUE_G),
operands[i].imm.value.s,
CVT100_OUT(COLOR_DEFAULT));
} else
{
ZYAN_PRINTF(" %s[%s%s %s %s%2d%s] %s0x%016" PRIX64 "%s",
CVT100_OUT(COLOR_VALUE_LABEL),
CVT100_OUT(COLOR_VALUE_B),
operands[i].imm.is_signed ? "S" : "U",
operands[i].imm.is_relative ? "R" : "A",
CVT100_OUT(COLOR_VALUE_G),
instruction->raw.imm[imm_id].size,
CVT100_OUT(COLOR_VALUE_LABEL),
CVT100_OUT(COLOR_VALUE_G),
operands[i].imm.value.u,
CVT100_OUT(COLOR_DEFAULT));
}
++imm_id;
break;
default:
ZYAN_UNREACHABLE;
}
ZYAN_PUTS("");
}
ZYAN_PRINTF("%s-- --------- ---------- ------ ------------ ---- ----- ------ ------" \
"-- ---------------------------%s\n", CVT100_OUT(COLOR_HEADER), CVT100_OUT(COLOR_DEFAULT));
}
/**
* Prints instruction flags info.
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
*/
static void PrintFlags(const ZydisDecodedInstruction* instruction)
{
static const char* strings_cpu_flags[] =
{
"CF",
ZYAN_NULL,
"PF",
ZYAN_NULL,
"AF",
ZYAN_NULL,
"ZF",
"SF",
"TF",
"IF",
"DF",
"OF",
"IOPL",
ZYAN_NULL,
"NT",
ZYAN_NULL,
"RF",
"VM",
"AC",
"VIF",
"VIP",
"ID",
};
static const char* strings_fpu_flags[] =
{
"C0",
"C1",
"C2",
"C3",
};
typedef struct FlagInfo_
{
const char* name;
const char* action;
} FlagInfo;
FlagInfo flags[ZYAN_ARRAY_LENGTH(strings_cpu_flags) + ZYAN_ARRAY_LENGTH(strings_fpu_flags)];
ZYAN_MEMSET(flags, 0, sizeof(flags));
// CPU
for (ZyanUSize i = 0; i < ZYAN_ARRAY_LENGTH(strings_cpu_flags); ++i)
{
flags[i].name = strings_cpu_flags[i];
flags[i].action = GetAccessedFlagActionString(instruction->cpu_flags, (ZyanU8)i);
}
// FPU
const ZyanUSize offset = ZYAN_ARRAY_LENGTH(strings_cpu_flags);
for (ZyanUSize i = 0; i < ZYAN_ARRAY_LENGTH(strings_fpu_flags); ++i)
{
flags[offset + i].name = strings_fpu_flags[i];
flags[offset + i].action = GetAccessedFlagActionString(instruction->fpu_flags, (ZyanU8)i);
}
PrintSectionHeader("FLAGS");
PrintValueLabel("ACTIONS");
ZyanU8 c = 0;
for (ZyanUSize i = 0; i < ZYAN_ARRAY_LENGTH(flags); ++i)
{
if (flags[i].action == ZYAN_NULL)
{
continue;
}
if (c && (c % 8 == 0))
{
ZYAN_PRINTF("\n ");
}
++c;
ZYAN_PRINTF("%s[%s%-4s%s: %s%-3s%s]%s ",
CVT100_OUT(COLOR_VALUE_LABEL), CVT100_OUT(COLOR_VALUE_B),
flags[i].name,
CVT100_OUT(COLOR_VALUE_LABEL), CVT100_OUT(COLOR_VALUE_B),
flags[i].action,
CVT100_OUT(COLOR_VALUE_LABEL), CVT100_OUT(COLOR_DEFAULT));
}
ZYAN_PUTS("");
PRINT_VALUE_G("READ", "0x%08" PRIX32, instruction->cpu_flags->tested);
PRINT_VALUE_G("WRITTEN", "0x%08" PRIX32,
instruction->cpu_flags->modified |
instruction->cpu_flags->set_0 |
instruction->cpu_flags->set_1 |
instruction->cpu_flags->undefined);
}
/**
* Prints instruction AVX info.
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
*/
static void PrintAVXInfo(const ZydisDecodedInstruction* instruction)
{
static const char* strings_broadcast_mode[] =
{
"NONE",
"1_TO_2",
"1_TO_4",
"1_TO_8",
"1_TO_16",
"1_TO_32",
"1_TO_64",
"2_TO_4",
"2_TO_8",
"2_TO_16",
"4_TO_8",
"4_TO_16",
"8_TO_16"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_broadcast_mode) == ZYDIS_BROADCAST_MODE_MAX_VALUE + 1);
static const char* strings_mask_mode[] =
{
"INVALID",
"DISABLED",
"MERGING",
"ZEROING",
"CONTROL",
"CONTROL_ZEROING"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_mask_mode) == ZYDIS_MASK_MODE_MAX_VALUE + 1);
static const char* strings_rounding_mode[] =
{
"DEFAULT",
"RN",
"RD",
"RU",
"RZ"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_rounding_mode) == ZYDIS_ROUNDING_MODE_MAX_VALUE + 1);
static const char* strings_swizzle_mode[] =
{
"NONE",
"DCBA",
"CDAB",
"BADC",
"DACB",
"AAAA",
"BBBB",
"CCCC",
"DDDD"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_swizzle_mode) == ZYDIS_SWIZZLE_MODE_MAX_VALUE + 1);
static const char* strings_conversion_mode[] =
{
"NONE",
"FLOAT16",
"SINT8",
"UINT8",
"SINT16",
"UINT16"
};
ZYAN_ASSERT(ZYAN_ARRAY_LENGTH(strings_conversion_mode) == ZYDIS_CONVERSION_MODE_MAX_VALUE + 1);
PrintSectionHeader("AVX");
PRINT_VALUE_B("VECTORLEN", "%03d", instruction->avx.vector_length);
PRINT_VALUE_B("BROADCAST", "%s%s%s", strings_broadcast_mode[instruction->avx.broadcast.mode],
CVT100_OUT(COLOR_VALUE_LABEL), instruction->avx.broadcast.is_static ? " (static)" : "");
switch (instruction->encoding)
{
case ZYDIS_INSTRUCTION_ENCODING_EVEX:
PRINT_VALUE_B("ROUNDING", "%s", strings_rounding_mode[instruction->avx.rounding.mode]);
PRINT_VALUE_B("SAE", "%s", instruction->avx.has_sae ? "Y" : "N");
PRINT_VALUE_R("MASK", "%s %s[%s%s%s]",
ZydisRegisterGetString(instruction->avx.mask.reg),
CVT100_OUT(COLOR_VALUE_LABEL), CVT100_OUT(COLOR_VALUE_B),
strings_mask_mode[instruction->avx.mask.mode], CVT100_OUT(COLOR_VALUE_LABEL));
break;
case ZYDIS_INSTRUCTION_ENCODING_MVEX:
PRINT_VALUE_B("ROUNDING", "%s", strings_rounding_mode[instruction->avx.rounding.mode]);
PRINT_VALUE_B("SAE", "%s", instruction->avx.has_sae ? "Y" : "N");
PRINT_VALUE_R("MASK", "%s %s[%sMERGING%s]",
ZydisRegisterGetString(instruction->avx.mask.reg),
CVT100_OUT(COLOR_VALUE_LABEL), CVT100_OUT(COLOR_VALUE_B),
CVT100_OUT(COLOR_VALUE_LABEL));
PRINT_VALUE_B("EH", "%s", instruction->avx.has_eviction_hint ? "Y" : "N");
PRINT_VALUE_B("SWIZZLE", "%s", strings_swizzle_mode[instruction->avx.swizzle.mode]);
PRINT_VALUE_B("CONVERT", "%s", strings_conversion_mode[instruction->avx.conversion.mode]);
break;
default:
break;
}
}
/**
* Prints the tokenized instruction.
*
* @param token A pointer to the first token.
*/
static void PrintTokenizedInstruction(const ZydisFormatterToken* token)
{
ZyanStatus status = ZYAN_STATUS_SUCCESS;
while (ZYAN_SUCCESS(status))
{
ZydisTokenType type;
ZyanConstCharPointer value;
if (!ZYAN_SUCCESS(status = ZydisFormatterTokenGetValue(token, &type, &value)))
{
PrintStatusError(status, "Failed to get token value");
exit(status);
}
const char* color;
switch (token->type)
{
case ZYDIS_TOKEN_DELIMITER:
ZYAN_FALLTHROUGH;
case ZYDIS_TOKEN_PARENTHESIS_OPEN:
ZYAN_FALLTHROUGH;
case ZYDIS_TOKEN_PARENTHESIS_CLOSE:
color = CVT100_OUT(ZYAN_VT100SGR_FG_WHITE);
break;
case ZYDIS_TOKEN_PREFIX:
case ZYDIS_TOKEN_MNEMONIC:
color = CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_RED);
break;
case ZYDIS_TOKEN_REGISTER:
color = CVT100_OUT(ZYAN_VT100SGR_FG_CYAN);
break;
case ZYDIS_TOKEN_ADDRESS_ABS:
case ZYDIS_TOKEN_ADDRESS_REL:
case ZYDIS_TOKEN_DISPLACEMENT:
color = CVT100_OUT(ZYAN_VT100SGR_FG_BRIGHT_GREEN);
break;
case ZYDIS_TOKEN_IMMEDIATE:
color = CVT100_OUT(ZYAN_VT100SGR_FG_GREEN);
break;
case ZYDIS_TOKEN_TYPECAST:
case ZYDIS_TOKEN_DECORATOR:
color = CVT100_OUT(ZYAN_VT100SGR_FG_WHITE);
break;
default:
color = CVT100_OUT(COLOR_DEFAULT);
break;
}
ZYAN_PRINTF("%s%s", color, value);
status = ZydisFormatterTokenNext(&token);
}
ZYAN_ASSERT(status == ZYAN_STATUS_OUT_OF_RANGE);
ZYAN_PRINTF("%s\n", CVT100_OUT(COLOR_DEFAULT));
}
/**
* Prints the formatted instruction disassembly.
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operands A pointer to the first `ZydisDecodedOperand` struct of the instruction.
* @param style The formatter style.
*/
static void PrintDisassembly(const ZydisDecodedInstruction* instruction,
const ZydisDecodedOperand* operands, ZydisFormatterStyle style)
{
ZyanStatus status;
ZydisFormatter formatter;
switch (style)
{
case ZYDIS_FORMATTER_STYLE_ATT:
if (!ZYAN_SUCCESS(status = ZydisFormatterInit(&formatter, ZYDIS_FORMATTER_STYLE_ATT)))
{
PrintStatusError(status, "Failed to initialize instruction-formatter");
exit(status);
}
PrintSectionHeader("ATT");
break;
case ZYDIS_FORMATTER_STYLE_INTEL:
if (!ZYAN_SUCCESS(status = ZydisFormatterInit(&formatter, ZYDIS_FORMATTER_STYLE_INTEL)) ||
!ZYAN_SUCCESS(status = ZydisFormatterSetProperty(&formatter,
ZYDIS_FORMATTER_PROP_FORCE_SEGMENT, ZYAN_TRUE)) ||
!ZYAN_SUCCESS(status = ZydisFormatterSetProperty(&formatter,
ZYDIS_FORMATTER_PROP_FORCE_SIZE, ZYAN_TRUE)))
{
PrintStatusError(status, "Failed to initialize instruction-formatter");
exit(status);
}
PrintSectionHeader("INTEL");
break;
default:
ZYAN_UNREACHABLE;
}
ZyanU8 buffer[256];
const ZydisFormatterToken* token;
PrintValueLabel("ABSOLUTE");
if (!ZYAN_SUCCESS(status = ZydisFormatterTokenizeInstruction(&formatter, instruction, operands,
instruction->operand_count_visible, buffer, sizeof(buffer), 0, &token)))
{
PrintStatusError(status, "Failed to tokenize instruction");
exit(status);
}
PrintTokenizedInstruction(token);
PrintValueLabel("RELATIVE");