diff options
Diffstat (limited to 'src/cpu/trace/reader/itx_reader.cc')
| -rw-r--r-- | src/cpu/trace/reader/itx_reader.cc | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/src/cpu/trace/reader/itx_reader.cc b/src/cpu/trace/reader/itx_reader.cc deleted file mode 100644 index e03ac6905..000000000 --- a/src/cpu/trace/reader/itx_reader.cc +++ /dev/null @@ -1,193 +0,0 @@ -/* - * Copyright (c) 2004-2005 The Regents of The University of Michigan - * All rights reserved. - * - * 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. - * - * Authors: Erik Hallnor - */ - -/** - * @file - * Declaration of a Intel ITX memory trace format reader. - */ -#include <sstream> - -#include "base/misc.hh" // for fatal -#include "cpu/trace/reader/itx_reader.hh" -#include "params/ITXReader.hh" - -using namespace std; - -ITXReader::ITXReader(const string &name, const string &filename) - : MemTraceReader(name) -{ - if (strcmp((filename.c_str() + filename.length() -3), ".gz") == 0) { - // Compressed file, need to use a pipe to gzip. - stringstream buf; - buf << "gzip -d -c " << filename << endl; - trace = popen(buf.str().c_str(), "r"); - } else { - trace = fopen(filename.c_str(), "rb"); - } - if (!trace) { - fatal("Can't open file %s", filename); - } - traceFormat = 0; - int c; - for (int i = 0; i < 4; ++i) { - c = getc(trace); - if (c == EOF) { - fatal("Unexpected end of trace file."); - } - traceFormat |= (c & 0xff) << (8 * i); - } - if (traceFormat > 2) - fatal("Invalid trace format."); -} - -Tick -ITXReader::getNextReq(MemReqPtr &req) -{ - MemReqPtr tmp_req = new MemReq(); - bool phys_val; - do { - int c = getc(trace); - if (c != EOF) { - // Decode first byte - // phys_val<1> | type <2:0> | size <3:0> - phys_val = c & 0x80; - tmp_req->size = (c & 0x0f) + 1; - int type = (c & 0x70) >> 4; - - // Could be a compressed instruction entry, expand if necessary - if (type == ITXCodeComp) { - if (traceFormat != 2) { - fatal("Compressed code entry in non CompCode trace."); - } - if (!codeVirtValid) { - fatal("Corrupt CodeComp entry."); - } - - tmp_req->vaddr = codeVirtAddr; - codeVirtAddr += tmp_req->size; - if (phys_val) { - if (!codePhysValid) { - fatal("Corrupt CodeComp entry."); - } - tmp_req->paddr = codePhysAddr; - if (((tmp_req->paddr & 0xfff) + tmp_req->size) & ~0xfff) { - // Crossed page boundary, next physical address is - // invalid - codePhysValid = false; - } else { - codePhysAddr += tmp_req->size; - } - assert(tmp_req->paddr >> 36 == 0); - } else { - codePhysValid = false; - } - type = ITXCode; - tmp_req->cmd = Read; - } else { - // Normal entry - tmp_req->vaddr = 0; - for (int i = 0; i < 4; ++i) { - c = getc(trace); - if (c == EOF) { - fatal("Unexpected end of trace file."); - } - tmp_req->vaddr |= (c & 0xff) << (8 * i); - } - if (type == ITXCode) { - codeVirtAddr = tmp_req->vaddr + tmp_req->size; - codeVirtValid = true; - } - tmp_req->paddr = 0; - if (phys_val) { - c = getc(trace); - if (c == EOF) { - fatal("Unexpected end of trace file."); - } - // Get the page offset from the virtual address. - tmp_req->paddr = tmp_req->vaddr & 0xfff; - tmp_req->paddr |= (c & 0xf0) << 8; - tmp_req->paddr |= (Addr)(c & 0x0f) << 32; - for (int i = 2; i < 4; ++i) { - c = getc(trace); - if (c == EOF) { - fatal("Unexpected end of trace file."); - } - tmp_req->paddr |= (Addr)(c & 0xff) << (8 * i); - } - if (type == ITXCode) { - if (((tmp_req->paddr & 0xfff) + tmp_req->size) - & ~0xfff) { - // Crossing the page boundary, next physical - // address isn't valid - codePhysValid = false; - } else { - codePhysAddr = tmp_req->paddr + tmp_req->size; - codePhysValid = true; - } - } - assert(tmp_req->paddr >> 36 == 0); - } else if (type == ITXCode) { - codePhysValid = false; - } - switch(type) { - case ITXRead: - tmp_req->cmd = Read; - break; - case ITXWrite: - tmp_req->cmd = Write; - break; - case ITXWriteback: - tmp_req->cmd = Writeback; - break; - case ITXCode: - tmp_req->cmd = Read; - tmp_req->flags |= INST_FETCH; - break; - default: - fatal("Unknown ITX type"); - } - } - } else { - // EOF need to return a null request - MemReqPtr null_req; - req = null_req; - return 0; - } - } while (!phys_val); - req = tmp_req; - assert(!req || (req->paddr >> 36) == 0); - return 0; -} - -ITXReader * -ITXReaderParams::create() -{ - return new ITXReader(name, filename); -} |