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zydis/src/Formatter.c

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Initial version 2.0 release
2016-05-26 03:25:48 +08:00
/***************************************************************************************************
Zyan Disassembler Engine (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.
***************************************************************************************************/
#include <stdio.h>
#include <stdarg.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <Zydis/Status.h>
#include <Zydis/Formatter.h>
#include <Zydis/SymbolResolver.h>
#include <Zydis/Utils.h>
/* ============================================================================================== */
/* Internal macros */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Helper macros */
/* ---------------------------------------------------------------------------------------------- */
#define ZYDIS_CHECK(status) \
if (status != ZYDIS_STATUS_SUCCESS) \
{ \
return status; \
}
/* ============================================================================================== */
/* Instruction formatter */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Internal functions */
/* ---------------------------------------------------------------------------------------------- */
/**
* @brief Inserts the @c text into the @c buffer at the given @c offset and increases the
* @c offset by the length of the text.
*
* @param buffer A pointer to the target buffer.
* @param bufferLen The length of the buffer.
* @param offset A pointer to the buffer-offset.
* @param text The text to insert.
* @param uppercase Set true, to convert to uppercase characters.
*
* @return A zydis status code.
*/
static ZydisStatus ZydisBufferAppend(char* buffer, size_t bufferLen, size_t* offset,
bool uppercase, const char* text)
{
ZYDIS_ASSERT(buffer);
ZYDIS_ASSERT(bufferLen != 0);
ZYDIS_ASSERT(offset);
ZYDIS_ASSERT(text);
size_t strLen = strlen(text);
if ((*offset + strLen) >= bufferLen)
{
return ZYDIS_STATUS_INSUFFICIENT_BUFFER_SIZE;
}
strncpy(&buffer[*offset], text, strLen + 1);
if (uppercase)
{
for (size_t i = *offset; i < *offset + strLen; ++i)
{
buffer[i] = (char)toupper(buffer[i]);
}
}
*offset += strLen;
return ZYDIS_STATUS_SUCCESS;
}
/**
* @brief Inserts formatted text into the @c buffer at the given @c offset and increases the
* @c offset by the length of the text.
*
* @param buffer A pointer to the target buffer.
* @param bufferLen The length of the buffer.
* @param offset A pointer to the buffer-offset.
* @param format The format string.
*
* @return A zydis status code.
*/
static ZydisStatus ZydisBufferAppendFormat(char* buffer, size_t bufferLen, size_t* offset,
bool uppercase, const char* format, ...)
{
ZYDIS_ASSERT(buffer);
ZYDIS_ASSERT(bufferLen != 0);
ZYDIS_ASSERT(offset);
ZYDIS_ASSERT(format);
va_list arglist;
va_start(arglist, format);
size_t n = bufferLen - *offset;
int w = vsnprintf(&buffer[*offset], n, format, arglist);
if ((w < 0) || ((size_t)w >= n))
{
va_end(arglist);
return ZYDIS_STATUS_INSUFFICIENT_BUFFER_SIZE;
}
if (uppercase)
{
for (size_t i = *offset; i < *offset + (size_t)w; ++i)
{
buffer[i] = (char)toupper(buffer[i]);
}
}
*offset += (size_t)w;
va_end(arglist);
return ZYDIS_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------------------------- */
static ZydisStatus ZydisBufferAppendAbsoluteAddress(const ZydisInstructionFormatter* formatter,
char* buffer, size_t bufferLen, size_t* offset, const ZydisInstructionInfo* info,
const ZydisOperandInfo* operand)
{
ZYDIS_ASSERT(formatter);
ZYDIS_ASSERT(buffer);
ZYDIS_ASSERT(bufferLen != 0);
ZYDIS_ASSERT(offset);
ZYDIS_ASSERT(info);
ZYDIS_ASSERT(operand);
ZYDIS_ASSERT((operand->type == ZYDIS_OPERAND_TYPE_MEMORY) ||
(operand->type == ZYDIS_OPERAND_TYPE_IMMEDIATE));
uint64_t address = 0;
switch (operand->type)
{
case ZYDIS_OPERAND_TYPE_MEMORY:
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ZYDIS_ASSERT(operand->mem.disp.dataSize != 0);
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if ((operand->mem.base == ZYDIS_REGISTER_EIP) || (operand->mem.base == ZYDIS_REGISTER_RIP))
{
ZYDIS_CHECK(ZydisUtilsCalcAbsoluteTargetAddress(info, operand, &address));
} else
{
ZYDIS_ASSERT(operand->mem.base == ZYDIS_REGISTER_NONE);
ZYDIS_ASSERT(operand->mem.index == ZYDIS_REGISTER_NONE);
ZYDIS_ASSERT(operand->mem.scale == 0);
address = (uint64_t)operand->mem.disp.value.sqword;
}
break;
case ZYDIS_OPERAND_TYPE_IMMEDIATE:
ZYDIS_CHECK(ZydisUtilsCalcAbsoluteTargetAddress(info, operand, &address));
break;
Minor refactorings and further preparation for advanced features
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default:
break;
Initial version 2.0 release
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}
const char* symbol = NULL;
int64_t symbolOffset = 0;
if (formatter->symbolResolver)
{
symbol = formatter->symbolResolver->resolveSymbol(formatter->symbolResolver, info, operand,
address, &symbolOffset);
}
if (symbol)
{
if (symbolOffset == 0)
{
return ZydisBufferAppendFormat(buffer, bufferLen, offset, false, "%s", symbol);
}
if (symbolOffset > 0)
{
return ZydisBufferAppendFormat(
buffer, bufferLen, offset, false, "%s+0x%02llX", symbol, symbolOffset);
}
if (symbolOffset < 0)
{
return ZydisBufferAppendFormat(
buffer, bufferLen, offset, false, "%s-0x%02llX", symbol, -symbolOffset);
}
}
if (info->operandMode == 16)
{
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%04X", address);
}
switch (info->mode)
{
case ZYDIS_DISASSEMBLER_MODE_16BIT:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%04X", address);
case ZYDIS_DISASSEMBLER_MODE_32BIT:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%08lX", address);
case ZYDIS_DISASSEMBLER_MODE_64BIT:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%016llX", address);
default:
return ZYDIS_STATUS_INVALID_PARAMETER;
}
}
static ZydisStatus ZydisBufferAppendImmediate(const ZydisInstructionFormatter* formatter,
char* buffer, size_t bufferLen, size_t* offset, const ZydisInstructionInfo* info,
const ZydisOperandInfo* operand)
{
ZYDIS_ASSERT(formatter);
ZYDIS_ASSERT(buffer);
ZYDIS_ASSERT(bufferLen != 0);
ZYDIS_ASSERT(offset);
ZYDIS_ASSERT(info);
ZYDIS_ASSERT(operand);
if ((formatter->addressFormat == ZYDIS_FORMATTER_ADDRESS_ABSOLUTE) &&
(operand->imm.isRelative))
{
return ZydisBufferAppendAbsoluteAddress(formatter, buffer, bufferLen, offset, info,
operand);
}
bool useSignedHex = ((operand->imm.isSigned &&
(formatter->addressFormat == ZYDIS_FORMATTER_ADDRESS_RELATIVE_SIGNED)) ||
(!operand->imm.isSigned && (formatter->immediateFormat == ZYDIS_FORMATTER_IMM_HEX_SIGNED)));
if (useSignedHex && (operand->imm.value.sqword < 0))
{
switch (operand->size)
{
case 8:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "-0x%02X",
-operand->imm.value.sbyte);
case 16:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "-0x%02X",
-operand->imm.value.sword);
case 32:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "-0x%02lX",
-operand->imm.value.sdword);
case 64:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "-0x%02llX",
-operand->imm.value.sqword);
default:
return ZYDIS_STATUS_INVALID_PARAMETER;
}
}
switch (operand->size)
{
case 8:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%02X",
operand->imm.value.ubyte);
case 16:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%02X",
operand->imm.value.uword);
case 32:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%02lX",
operand->imm.value.udword);
case 64:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%02llX",
operand->imm.value.uqword);
default:
return ZYDIS_STATUS_INVALID_PARAMETER;
}
}
/* ---------------------------------------------------------------------------------------------- */
static ZydisStatus ZydisBufferAppendOperandIntelMemory(const ZydisInstructionFormatter* formatter,
char* buffer, size_t bufferLen, size_t* offset, const ZydisInstructionInfo* info,
const ZydisOperandInfo* operand, uint16_t typecast)
{
if (typecast)
{
char* str = "";
switch (typecast)
{
case 8:
str = "byte ptr ";
break;
case 16:
str = "word ptr ";
break;
case 32:
str = "dword ptr ";
break;
case 48:
str = "fword ptr ";
break;
case 64:
str = "qword ptr ";
break;
case 80:
str = "tbyte ptr ";
break;
case 128:
str = "xmmword ptr ";
break;
case 256:
str = "ymmword ptr ";
break;
case 512:
str = "zmmword ptr ";
break;
Minor refactorings and further preparation for advanced features
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default:
break;
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}
ZYDIS_CHECK(ZydisBufferAppend(
buffer, bufferLen, offset, (formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), str));
}
if (operand->mem.segment != ZYDIS_REGISTER_NONE)
{
if ((formatter->flags & ZYDIS_FORMATTER_FLAG_ALWAYS_DISPLAY_MEMORY_SEGMENT) ||
(((operand->mem.segment != ZYDIS_REGISTER_DS) ||
(info->prefixFlags & ZYDIS_PREFIX_SEGMENT_DS)) &&
((operand->mem.segment != ZYDIS_REGISTER_SS) ||
(info->prefixFlags & ZYDIS_PREFIX_SEGMENT_SS))))
{
ZYDIS_CHECK(ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "%s:",
ZydisRegisterGetString(operand->mem.segment)));
}
}
ZYDIS_CHECK(ZydisBufferAppend(
buffer, bufferLen, offset, (formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "["));
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if ((operand->mem.disp.dataSize != 0) && ((operand->mem.base == ZYDIS_REGISTER_NONE) ||
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(operand->mem.base == ZYDIS_REGISTER_EIP) || (operand->mem.base == ZYDIS_REGISTER_RIP)) &&
(operand->mem.index == ZYDIS_REGISTER_NONE) && (operand->mem.scale == 0))
{
ZYDIS_CHECK(ZydisBufferAppendAbsoluteAddress(formatter, buffer, bufferLen, offset, info,
operand));
} else
{
if (operand->mem.base != ZYDIS_REGISTER_NONE)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE),
ZydisRegisterGetString(operand->mem.base)));
}
if (operand->mem.index != ZYDIS_REGISTER_NONE)
{
const char* c = (operand->mem.base != ZYDIS_REGISTER_NONE) ? "+" : "";
ZYDIS_CHECK(ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "%s%s", c,
ZydisRegisterGetString(operand->mem.index)));
if (operand->mem.scale)
{
ZYDIS_CHECK(ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "*%d",
operand->mem.scale));
}
}
Minor refactorings and further preparation for advanced features
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if ((operand->mem.disp.dataSize) && ((operand->mem.disp.value.sqword) ||
Initial version 2.0 release
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((operand->mem.base == ZYDIS_REGISTER_NONE) &&
(operand->mem.index == ZYDIS_REGISTER_NONE))))
{
if ((operand->mem.disp.value.sqword < 0) && (
(operand->mem.base != ZYDIS_REGISTER_NONE) ||
(operand->mem.index != ZYDIS_REGISTER_NONE)))
{
ZYDIS_CHECK(
ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "-0x%02llX",
-operand->mem.disp.value.sqword));
} else
{
const char* sign =
((operand->mem.base == ZYDIS_REGISTER_NONE) &&
(operand->mem.index == ZYDIS_REGISTER_NONE)) ? "" : "+";
ZYDIS_CHECK(
ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "%s0x%02llX",
sign, operand->mem.disp.value.sqword));
}
}
}
return ZydisBufferAppend(
buffer, bufferLen, offset, (formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "]");
}
/* ---------------------------------------------------------------------------------------------- */
/* Intel style */
/* ---------------------------------------------------------------------------------------------- */
static ZydisStatus ZydisBufferAppendOperandIntel(const ZydisInstructionFormatter* formatter,
char* buffer, size_t bufferLen, size_t* offset, const ZydisInstructionInfo* info,
const ZydisOperandInfo* operand, uint16_t typecast)
{
switch (operand->type)
{
case ZYDIS_OPERAND_TYPE_REGISTER:
{
const char* reg = ZydisRegisterGetString(operand->reg);
if (!reg)
{
reg = "invalid";
}
return ZydisBufferAppend(
buffer, bufferLen, offset, (formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), reg);
}
case ZYDIS_OPERAND_TYPE_MEMORY:
return ZydisBufferAppendOperandIntelMemory(formatter, buffer, bufferLen, offset, info,
operand, typecast);
case ZYDIS_OPERAND_TYPE_POINTER:
return ZydisBufferAppendFormat(buffer, bufferLen, offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "0x%02X:0x%02lX",
operand->ptr.segment, operand->ptr.offset);
case ZYDIS_OPERAND_TYPE_IMMEDIATE:
return ZydisBufferAppendImmediate(formatter, buffer, bufferLen, offset, info, operand);
Minor refactorings and further preparation for advanced features
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default:
break;
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}
return ZYDIS_STATUS_INVALID_PARAMETER;
}
static ZydisStatus ZydisFormatterFormatInstructionIntel(ZydisInstructionFormatter* formatter,
const ZydisInstructionInfo* info, char* buffer, size_t bufferLen)
{
size_t offset = 0;
if ((info->prefixFlags & ZYDIS_PREFIX_ACCEPTS_REPNE) &&
(info->prefixFlags & ZYDIS_PREFIX_REPNE))
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "repne "));
}
if ((info->prefixFlags & ZYDIS_PREFIX_ACCEPTS_REP) && (info->prefixFlags & ZYDIS_PREFIX_REP))
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "rep "));
}
if ((info->prefixFlags & ZYDIS_PREFIX_ACCEPTS_LOCK) && (info->prefixFlags & ZYDIS_PREFIX_LOCK))
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "lock "));
}
if (info->prefixFlags & ZYDIS_PREFIX_XACQUIRE)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "xacquire "));
} else if (info->prefixFlags & ZYDIS_PREFIX_XRELEASE)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "xrelease "));
}
const char* mnemonic = ZydisMnemonicGetString(info->mnemonic);
if (!mnemonic)
{
mnemonic = "invalid";
}
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), mnemonic));
uint16_t typecast = 0;
Added support for instructions with 5 operands * optimized table structure to support instructions with 5 operands (vpermil2ps, vpermil2pd) * updated InstructionEditor
2016-09-13 11:26:55 +08:00
for (int i = 0; i < 5; ++i)
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{
if (info->operand[i].type == ZYDIS_OPERAND_TYPE_UNUSED)
{
break;
}
if (i == 0)
{
if (formatter->flags & ZYDIS_FORMATTER_FLAG_TAB_AFTER_MNEMONIC)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), "\t"));
} else
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " "));
}
} else
{
if (formatter->flags & ZYDIS_FORMATTER_FLAG_NO_SPACE_BETWEEN_OPERANDS)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), ","));
} else
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), ", "));
}
}
if (formatter->flags & ZYDIS_FORMATTER_FLAG_ALWAYS_DISPLAY_MEMORY_SIZE)
{
if (info->operand[i].type == ZYDIS_OPERAND_TYPE_MEMORY)
{
typecast = info->operand[i].size;
}
} else if (info->operand[i].type == ZYDIS_OPERAND_TYPE_MEMORY)
{
switch (i)
{
case 0:
typecast = ((info->operand[1].type == ZYDIS_OPERAND_TYPE_UNUSED) ||
(info->operand[1].type == ZYDIS_OPERAND_TYPE_IMMEDIATE) ||
(info->operand[0].size != info->operand[1].size)) ? info->operand[0].size : 0;
if (!typecast && (info->operand[1].type == ZYDIS_OPERAND_TYPE_REGISTER) &&
(info->operand[1].reg == ZYDIS_REGISTER_CL))
{
switch (info->mnemonic)
{
case ZYDIS_MNEMONIC_RCL:
case ZYDIS_MNEMONIC_ROL:
case ZYDIS_MNEMONIC_ROR:
case ZYDIS_MNEMONIC_RCR:
case ZYDIS_MNEMONIC_SHL:
case ZYDIS_MNEMONIC_SHR:
case ZYDIS_MNEMONIC_SAR:
typecast = info->operand[0].size;
Minor refactorings and further preparation for advanced features
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default:
break;
Initial version 2.0 release
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}
}
break;
case 1:
case 2:
typecast = (info->operand[i - 1].size != info->operand[i].size) ?
Minor bugfixes and refactorings * Fixed some instruction Definitions * Implemented a primitive diffing-mode to compare different versions of the instruction-database (InstructionEditor)
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info->operand[i].size : 0;
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break;
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default:
break;
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}
}
ZYDIS_CHECK(ZydisBufferAppendOperandIntel(formatter, buffer, bufferLen, &offset, info,
&info->operand[i], typecast));
if (info->encoding == ZYDIS_INSTRUCTION_ENCODING_EVEX)
{
if (i == 0)
{
if (info->avx.maskRegister)
{
ZYDIS_CHECK(ZydisBufferAppendFormat(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {%s}",
ZydisRegisterGetString(info->avx.maskRegister)));
}
if (info->avx.maskMode == ZYDIS_AVX_MASKMODE_ZERO)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {z}"));
}
} else
{
if (info->operand[i].type == ZYDIS_OPERAND_TYPE_MEMORY)
{
switch (info->avx.broadcast)
{
case ZYDIS_AVX_BCSTMODE_2:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {1to2}"));
break;
case ZYDIS_AVX_BCSTMODE_4:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {1to4}"));
break;
case ZYDIS_AVX_BCSTMODE_8:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {1to8}"));
break;
case ZYDIS_AVX_BCSTMODE_16:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {1to16}"));
break;
Minor refactorings and further preparation for advanced features
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default:
break;
Initial version 2.0 release
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}
}
if ((i == (info->operandCount - 1)) || ((i != (info->operandCount - 1)) &&
(info->operand[i + 1].type == ZYDIS_OPERAND_TYPE_IMMEDIATE)))
{
switch (info->avx.roundingMode)
{
case ZYDIS_AVX_RNDMODE_INVALID:
if (info->avx.sae)
{
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {sae}"));
}
break;
case ZYDIS_AVX_RNDMODE_RN:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {rn-sae}"));
break;
case ZYDIS_AVX_RNDMODE_RD:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {rd-sae}"));
break;
case ZYDIS_AVX_RNDMODE_RU:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {ru-sae}"));
break;
case ZYDIS_AVX_RNDMODE_RZ:
ZYDIS_CHECK(ZydisBufferAppend(buffer, bufferLen, &offset,
(formatter->flags & ZYDIS_FORMATTER_FLAG_UPPERCASE), " {rz-sae}"));
break;
default:
return ZYDIS_STATUS_INVALID_PARAMETER;
}
}
}
}
}
return ZYDIS_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------------------------- */
/* Exported functions */
/* ---------------------------------------------------------------------------------------------- */
ZydisStatus ZydisFormatterInitInstructionFormatter(ZydisInstructionFormatter* formatter,
ZydisFormatterStyle style)
{
return ZydisFormatterInitInstructionFormatterEx(formatter, style, 0);
}
ZydisStatus ZydisFormatterInitInstructionFormatterEx(
ZydisInstructionFormatter* formatter, ZydisFormatterStyle style, ZydisFormatterFlags flags)
{
if (!formatter || (style != ZYDIS_FORMATTER_STYLE_INTEL))
{
return ZYDIS_STATUS_INVALID_PARAMETER;
}
formatter->style = style;
formatter->flags = flags;
formatter->addressFormat = ZYDIS_FORMATTER_ADDRESS_ABSOLUTE;
formatter->displacementFormat = ZYDIS_FORMATTER_DISP_HEX_SIGNED;
formatter->immediateFormat = ZYDIS_FORMATTER_IMM_HEX_UNSIGNED;
formatter->symbolResolver = NULL;
return ZYDIS_STATUS_SUCCESS;
}
ZydisStatus ZydisFormatterGetSymbolResolver(const ZydisInstructionFormatter* formatter,
ZydisCustomSymbolResolver** symbolResolver)
{
if (!formatter || !symbolResolver)
{
return ZYDIS_STATUS_INVALID_PARAMETER;
}
*symbolResolver = formatter->symbolResolver;
return ZYDIS_STATUS_SUCCESS;
}
ZydisStatus ZydisFormatterSetSymbolResolver(ZydisInstructionFormatter* formatter,
ZydisCustomSymbolResolver* symbolResolver)
{
if (!formatter)
{
return ZYDIS_STATUS_INVALID_PARAMETER;
}
formatter->symbolResolver = symbolResolver;
return ZYDIS_STATUS_SUCCESS;
}
ZydisStatus ZydisFormatterFormatInstruction(ZydisInstructionFormatter* formatter,
const ZydisInstructionInfo* info, char* buffer, size_t bufferLen)
{
if (!formatter || !info || !buffer || (bufferLen == 0))
{
return ZYDIS_STATUS_INVALID_PARAMETER;
}
switch (formatter->style)
{
case ZYDIS_FORMATTER_STYLE_INTEL:
return ZydisFormatterFormatInstructionIntel(formatter, info, buffer, bufferLen);
default:
return ZYDIS_STATUS_INVALID_PARAMETER;
}
}
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */