blob: 48248d1cd4cbe71e8b057500dc966585345438ff [file] [log] [blame]
/*
* Copyright 2022 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "sim/bufval.hh"
#include <cassert>
#include <sstream>
#include "base/intmath.hh"
#include "base/logging.hh"
#include "sim/byteswap.hh"
namespace gem5
{
std::pair<std::uint64_t, bool>
getUintX(const void *buf, std::size_t bytes, ByteOrder endian)
{
assert(buf);
switch (bytes) {
case sizeof(std::uint64_t):
return {gtoh(*(const std::uint64_t *)buf, endian), true};
case sizeof(std::uint32_t):
return {gtoh(*(const std::uint32_t *)buf, endian), true};
case sizeof(std::uint16_t):
return {gtoh(*(const std::uint16_t *)buf, endian), true};
case sizeof(std::uint8_t):
return {gtoh(*(const std::uint8_t *)buf, endian), true};
default:
return {0, false};
}
}
bool
setUintX(std::uint64_t val, void *buf, std::size_t bytes, ByteOrder endian)
{
assert(buf);
switch (bytes) {
case sizeof(std::uint64_t):
*(std::uint64_t *)buf = htog<std::uint64_t>(val, endian);
return true;
case sizeof(std::uint32_t):
*(std::uint32_t *)buf = htog<std::uint32_t>(val, endian);
return true;
case sizeof(std::uint16_t):
*(std::uint16_t *)buf = htog<std::uint16_t>(val, endian);
return true;
case sizeof(std::uint8_t):
*(std::uint8_t *)buf = htog<std::uint8_t>(val, endian);
return true;
default:
return false;
}
}
std::pair<std::string, bool>
printUintX(const void *buf, std::size_t bytes, ByteOrder endian)
{
auto [val, success] = getUintX(buf, bytes, endian);
if (!success)
return {"", false};
std::ostringstream out;
out << "0x";
out.width(2 * bytes);
out.fill('0');
out.setf(std::ios::hex, std::ios::basefield);
out << val;
return {out.str(), true};
}
std::string
printByteBuf(const void *buf, std::size_t bytes, ByteOrder endian,
std::size_t chunk_size)
{
assert(buf);
std::ostringstream out;
out << "[";
out.width(2);
out.fill('0');
out.setf(std::ios::hex, std::ios::basefield);
// Bytes that fall outside of a complete chunk. Will always be MSBs.
size_t extra = bytes % chunk_size;
const uint8_t *ptr = (const uint8_t *)buf;
int step = 1;
if (endian == ByteOrder::big) {
step = -1;
ptr = ptr + bytes - 1;
// If there's an incomplete chunk, start with that.
if (extra) {
bytes -= extra;
while (extra--) {
out.width(2);
out << (unsigned)*ptr;
ptr += step;
}
if (bytes)
out << " ";
}
}
// Print all the complete chunks.
while (bytes >= chunk_size) {
for (int i = 0; i < chunk_size; i++) {
out.width(2);
out << (unsigned)*ptr;
ptr += step;
}
bytes -= chunk_size;
if (bytes)
out << " ";
}
// Print any trailing leftovers. Only happens for little endian.
while (bytes--) {
out.width(2);
out << (unsigned)*ptr;
ptr += step;
}
out.width(0);
out << "]";
return out.str();
}
} // namespace gem5