0ed3c84c7b
Usage: m5 writefile <filename> File will be created in the gem5 output folder with the identical filename. Implementation is largely based on the existing "readfile" functionality. Currently does not support exporting of folders.
319 lines
7.6 KiB
C
319 lines
7.6 KiB
C
/*
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* Copyright (c) 2011 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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*/
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#ifdef linux
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#define _GNU_SOURCE
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#include <sched.h>
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#endif
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#include <err.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "m5op.h"
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char *progname;
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char *command = "unspecified";
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void usage();
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void
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parse_int_args(int argc, char *argv[], uint64_t ints[], int len)
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{
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if (argc > len)
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usage();
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int i;
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for (i = 0; i < len; ++i)
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ints[i] = (i < argc) ? strtoul(argv[i], NULL, 0) : 0;
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}
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int
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read_file(int dest_fid)
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{
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char buf[256*1024];
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int offset = 0;
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int len;
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// Touch all buffer pages to ensure they are mapped in the
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// page table. This is required in the case of X86_FS, where
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// Linux does demand paging.
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memset(buf, 0, sizeof(buf));
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while ((len = m5_readfile(buf, sizeof(buf), offset)) > 0) {
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write(dest_fid, buf, len);
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offset += len;
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}
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}
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int
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write_file(const char *filename)
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{
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fprintf(stderr, "opening %s\n", filename);
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int src_fid = open(filename, O_RDONLY);
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if (src_fid < 0) {
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fprintf(stderr, "error opening %s\n", filename);
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return;
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}
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char buf[256*1024];
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int offset = 0;
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int len;
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int bytes = 0;
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memset(buf, 0, sizeof(buf));
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while ((len = read(src_fid, buf, sizeof(buf))) > 0) {
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bytes += m5_writefile(buf, len, offset, filename);
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offset += len;
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}
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fprintf(stderr, "written %d bytes\n", bytes);
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close(src_fid);
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}
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void
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do_exit(int argc, char *argv[])
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{
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if (argc > 1)
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usage();
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m5_exit((argc > 0) ? strtoul(argv[0], NULL, 0) : 0);
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}
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void
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do_reset_stats(int argc, char *argv[])
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{
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uint64_t ints[2];
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parse_int_args(argc, argv, ints, 2);
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m5_reset_stats(ints[0], ints[1]);
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}
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void
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do_dump_stats(int argc, char *argv[])
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{
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uint64_t ints[2];
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parse_int_args(argc, argv, ints, 2);
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m5_dump_stats(ints[0], ints[1]);
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}
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void
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do_dump_reset_stats(int argc, char *argv[])
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{
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uint64_t ints[2];
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parse_int_args(argc, argv, ints, 2);
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m5_dumpreset_stats(ints[0], ints[1]);
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}
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void
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do_read_file(int argc, char *argv[])
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{
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if (argc > 0)
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usage();
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read_file(STDOUT_FILENO);
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}
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void
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do_write_file(int argc, char *argv[])
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{
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if (argc != 1)
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usage();
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const char *filename = argv[0];
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write_file(filename);
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}
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void
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do_exec_file(int argc, char *argv[])
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{
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if (argc > 0)
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usage();
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const char *destname = "/tmp/execfile";
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int fid = open(destname, O_WRONLY, 0777);
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int len = read_file(fid);
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close(fid);
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if (len > 0) {
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execl(destname, "execfile", NULL);
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err(1, "execl failed!");
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}
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}
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void
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do_checkpoint(int argc, char *argv[])
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{
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uint64_t ints[2];
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parse_int_args(argc, argv, ints, 2);
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m5_checkpoint(ints[0], ints[1]);
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}
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void
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do_load_symbol(int argc, char *argv[])
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{
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if (argc != 2)
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usage();
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uint64_t addr = strtoul(argv[0], NULL, 0);
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char *symbol = argv[1];
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m5_loadsymbol(addr, symbol);
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}
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void
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do_initparam(int argc, char *argv[])
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{
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if (argc != 0)
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usage();
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uint64_t val = m5_initparam();
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printf("%"PRIu64, val);
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}
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void
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do_sw99param(int argc, char *argv[])
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{
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if (argc != 0)
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usage();
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uint64_t param = m5_initparam();
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// run-time, rampup-time, rampdown-time, warmup-time, connections
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printf("%d %d %d %d %d", (param >> 48) & 0xfff,
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(param >> 36) & 0xfff, (param >> 24) & 0xfff,
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(param >> 12) & 0xfff, (param >> 0) & 0xfff);
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}
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#ifdef linux
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void
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do_pin(int argc, char *argv[])
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{
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if (argc < 2)
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usage();
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cpu_set_t mask;
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CPU_ZERO(&mask);
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const char *sep = ",";
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char *target = strtok(argv[0], sep);
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while (target) {
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CPU_SET(atoi(target), &mask);
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target = strtok(NULL, sep);
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}
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if (sched_setaffinity(0, sizeof(cpu_set_t), &mask) < 0)
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err(1, "setaffinity");
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execvp(argv[1], &argv[1]);
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err(1, "execvp failed!");
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}
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#endif
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struct MainFunc
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{
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char *name;
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void (*func)(int argc, char *argv[]);
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char *usage;
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};
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struct MainFunc mainfuncs[] = {
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{ "exit", do_exit, "[delay]" },
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{ "resetstats", do_reset_stats, "[delay [period]]" },
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{ "dumpstats", do_dump_stats, "[delay [period]]" },
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{ "dumpresetstats", do_dump_reset_stats, "[delay [period]]" },
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{ "readfile", do_read_file, "" },
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{ "writefile", do_write_file, "<filename>" },
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{ "execfile", do_exec_file, "" },
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{ "checkpoint", do_checkpoint, "[delay [period]]" },
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{ "loadsymbol", do_load_symbol, "<address> <symbol>" },
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{ "initparam", do_initparam, "" },
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{ "sw99param", do_sw99param, "" },
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#ifdef linux
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{ "pin", do_pin, "<cpu> <program> [args ...]" }
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#endif
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};
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int numfuncs = sizeof(mainfuncs) / sizeof(mainfuncs[0]);
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void
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usage()
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{
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int i;
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for (i = 0; i < numfuncs; ++i) {
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char *header = i ? "" : "usage:";
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fprintf(stderr, "%-6s %s %s %s\n",
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header, progname, mainfuncs[i].name, mainfuncs[i].usage);
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}
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fprintf(stderr, "\n");
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fprintf(stderr, "All times in nanoseconds!\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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progname = argv[0];
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if (argc < 2)
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usage(1);
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command = argv[1];
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argv += 2;
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argc -= 2;
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int i;
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for (i = 0; i < numfuncs; ++i) {
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if (strcmp(command, mainfuncs[i].name) != 0)
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continue;
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mainfuncs[i].func(argc, argv);
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exit(0);
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}
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usage(1);
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}
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