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/*
* Copyright (C) 2018-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "print_formatter.h"
#include "shared/source/helpers/string.h"
#include <iostream>
namespace NEO {
PrintFormatter::PrintFormatter(const uint8_t *printfOutputBuffer, uint32_t printfOutputBufferMaxSize,
bool using32BitPointers, const StringMap *stringLiteralMap)
: printfOutputBuffer(printfOutputBuffer),
printfOutputBufferSize(printfOutputBufferMaxSize),
using32BitPointers(using32BitPointers),
usesStringMap(stringLiteralMap != nullptr),
stringLiteralMap(stringLiteralMap) {
output.reset(new char[maxSinglePrintStringLength]);
}
void PrintFormatter::printKernelOutput(const std::function<void(char *)> &print) {
currentOffset = initialOffset;
// first 4 bytes of the buffer store the actual size of data that was written by printf from within EUs
uint32_t printfOutputBufferSizeRead = 0;
read(&printfOutputBufferSizeRead);
printfOutputBufferSize = std::min(printfOutputBufferSizeRead, printfOutputBufferSize);
if (usesStringMap) {
uint32_t stringIndex = 0;
while (currentOffset + 4 <= printfOutputBufferSize) {
read(&stringIndex);
const char *formatString = queryPrintfString(stringIndex);
if (formatString != nullptr) {
printString(formatString, print);
}
}
} else {
while (currentOffset + sizeof(char *) <= printfOutputBufferSize) {
char *formatString = nullptr;
read(&formatString);
if (formatString == reinterpret_cast<char *>(static_cast<uintptr_t>(0xffffffff))) {
break;
}
if (formatString != nullptr) {
printString(formatString, print);
}
}
}
}
void PrintFormatter::printString(const char *formatString, const std::function<void(char *)> &print) {
size_t length = strnlen_s(formatString, maxSinglePrintStringLength - 1);
size_t cursor = 0;
std::unique_ptr<char[]> dataFormat(new char[length + 1]);
for (size_t i = 0; i <= length; i++) {
if (formatString[i] == '%') {
size_t end = i;
if (end + 1 <= length && formatString[end + 1] == '%') {
output[cursor++] = '%';
i++;
continue;
}
while (isConversionSpecifier(formatString[end++]) == false && end < length)
;
memcpy_s(dataFormat.get(), length, formatString + i, end - i);
dataFormat[end - i] = '\0';
if (formatString[end - 1] == 's')
cursor += printStringToken(output.get() + cursor, maxSinglePrintStringLength - cursor, dataFormat.get());
else
cursor += printToken(output.get() + cursor, maxSinglePrintStringLength - cursor, dataFormat.get());
i = end - 1;
} else {
output[cursor++] = formatString[i];
}
}
output[maxSinglePrintStringLength - 1] = '\0';
print(output.get());
}
void PrintFormatter::stripVectorFormat(const char *format, char *stripped) {
while (*format != '\0') { // //NOLINT(clang-analyzer-core.UndefinedBinaryOperatorResult)
if (*format != 'v') {
*stripped = *format;
} else if (*(format + 1) != '1') {
format += 2;
continue;
} else {
format += 3;
continue;
}
stripped++;
format++;
}
*stripped = '\0';
}
void PrintFormatter::stripVectorTypeConversion(char *format) {
size_t len = strlen(format);
if (len > 3 && format[len - 3] == 'h' && format[len - 2] == 'l') {
format[len - 3] = format[len - 1];
format[len - 2] = '\0';
}
}
template <>
void PrintFormatter::adjustFormatString<int64_t>(std::string &formatString) {
auto longPosition = formatString.find('l');
if (longPosition == std::string::npos) {
return;
}
UNRECOVERABLE_IF(formatString.size() - 1 == longPosition);
if (formatString.at(longPosition + 1) != 'l') {
formatString.append(1, '\0');
std::move_backward(formatString.begin() + longPosition, formatString.end() - 1, formatString.end());
formatString[longPosition] = 'l';
}
}
size_t PrintFormatter::printToken(char *output, size_t size, const char *formatString) {
PrintfDataType type(PrintfDataType::invalidType);
read(&type);
switch (type) {
case PrintfDataType::byteType:
return typedPrintToken<int8_t>(output, size, formatString);
case PrintfDataType::shortType:
return typedPrintToken<int16_t>(output, size, formatString);
case PrintfDataType::intType:
return typedPrintToken<int>(output, size, formatString);
case PrintfDataType::floatType:
return typedPrintToken<float>(output, size, formatString);
case PrintfDataType::longType:
return typedPrintToken<int64_t>(output, size, formatString);
case PrintfDataType::pointerType:
return printPointerToken(output, size, formatString);
case PrintfDataType::doubleType:
return typedPrintToken<double>(output, size, formatString);
case PrintfDataType::vectorByteType:
return typedPrintVectorToken<int8_t>(output, size, formatString);
case PrintfDataType::vectorShortType:
return typedPrintVectorToken<int16_t>(output, size, formatString);
case PrintfDataType::vectorIntType:
return typedPrintVectorToken<int>(output, size, formatString);
case PrintfDataType::vectorLongType:
return typedPrintVectorToken<int64_t>(output, size, formatString);
case PrintfDataType::vectorFloatType:
return typedPrintVectorToken<float>(output, size, formatString);
case PrintfDataType::vectorDoubleType:
return typedPrintVectorToken<double>(output, size, formatString);
default:
return 0;
}
}
size_t PrintFormatter::printStringToken(char *output, size_t size, const char *formatString) {
PrintfDataType type = PrintfDataType::invalidType;
read(&type);
const char *string = nullptr;
if (usesStringMap) {
int index = 0;
read(&index);
string = queryPrintfString(index);
} else {
read(&string);
}
switch (type) {
default:
return simpleSprintf(output, size, formatString, 0);
case PrintfDataType::stringType:
case PrintfDataType::pointerType:
return simpleSprintf(output, size, formatString, string);
}
}
size_t PrintFormatter::printPointerToken(char *output, size_t size, const char *formatString) {
uint64_t value = {0};
read(&value);
if (using32BitPointers) {
value &= 0x00000000FFFFFFFF;
}
return simpleSprintf(output, size, formatString, value);
}
const char *PrintFormatter::queryPrintfString(uint32_t index) const {
auto stringEntry = stringLiteralMap->find(index);
return stringEntry == stringLiteralMap->end() ? nullptr : stringEntry->second.c_str();
}
char PrintFormatter::escapeChar(char escape) {
switch (escape) {
case 'n':
return '\n';
default:
return escape;
}
}
bool PrintFormatter::isConversionSpecifier(char c) {
switch (c) {
case 'd':
case 'i':
case 'o':
case 'u':
case 'x':
case 'X':
case 'a':
case 'A':
case 'e':
case 'E':
case 'f':
case 'F':
case 'g':
case 'G':
case 's':
case 'c':
case 'p':
return true;
default:
return false;
}
}
} // namespace NEO
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