gem5/sim/process.cc
Ali Saidi 2f316082e4 Updated Copyright with information in bitkeeper changelogs
arch/alpha/alpha_linux_process.cc:
arch/alpha/alpha_linux_process.hh:
arch/alpha/alpha_memory.cc:
arch/alpha/alpha_memory.hh:
arch/alpha/alpha_tru64_process.cc:
arch/alpha/alpha_tru64_process.hh:
arch/alpha/aout_machdep.h:
arch/alpha/arguments.cc:
arch/alpha/arguments.hh:
arch/alpha/faults.cc:
arch/alpha/faults.hh:
arch/alpha/isa_traits.hh:
arch/alpha/osfpal.cc:
arch/alpha/osfpal.hh:
arch/alpha/pseudo_inst.cc:
arch/alpha/pseudo_inst.hh:
arch/alpha/vptr.hh:
arch/alpha/vtophys.cc:
arch/alpha/vtophys.hh:
base/bitfield.hh:
base/callback.hh:
base/circlebuf.cc:
base/circlebuf.hh:
base/compression/lzss_compression.cc:
base/compression/lzss_compression.hh:
base/compression/null_compression.hh:
base/cprintf.cc:
base/cprintf.hh:
base/cprintf_formats.hh:
base/date.cc:
base/dbl_list.hh:
base/endian.hh:
base/fast_alloc.cc:
base/fast_alloc.hh:
base/fifo_buffer.cc:
base/fifo_buffer.hh:
base/hashmap.hh:
base/hostinfo.cc:
base/hostinfo.hh:
base/hybrid_pred.cc:
base/hybrid_pred.hh:
base/inet.cc:
base/inet.hh:
base/inifile.cc:
base/inifile.hh:
base/intmath.cc:
base/intmath.hh:
base/loader/aout_object.cc:
base/loader/aout_object.hh:
base/loader/ecoff_object.cc:
base/loader/ecoff_object.hh:
base/loader/elf_object.cc:
base/loader/elf_object.hh:
base/loader/object_file.cc:
base/loader/object_file.hh:
base/loader/symtab.cc:
base/loader/symtab.hh:
base/misc.cc:
base/misc.hh:
base/mod_num.hh:
base/mysql.cc:
base/mysql.hh:
base/pollevent.cc:
base/pollevent.hh:
base/predictor.hh:
base/random.cc:
base/random.hh:
base/range.cc:
base/range.hh:
base/refcnt.hh:
base/remote_gdb.cc:
base/remote_gdb.hh:
base/res_list.hh:
base/sat_counter.cc:
base/sat_counter.hh:
base/sched_list.hh:
base/socket.cc:
base/socket.hh:
base/statistics.cc:
base/statistics.hh:
base/stats/events.cc:
base/stats/events.hh:
base/stats/flags.hh:
base/stats/mysql.cc:
base/stats/mysql.hh:
base/stats/mysql_run.hh:
base/stats/output.hh:
base/stats/statdb.cc:
base/stats/statdb.hh:
base/stats/text.cc:
base/stats/text.hh:
base/stats/types.hh:
base/stats/visit.cc:
base/stats/visit.hh:
base/str.cc:
base/str.hh:
base/time.cc:
base/time.hh:
base/trace.cc:
base/trace.hh:
base/userinfo.cc:
base/userinfo.hh:
cpu/base_cpu.cc:
cpu/base_cpu.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/exetrace.cc:
cpu/exetrace.hh:
cpu/full_cpu/op_class.hh:
cpu/full_cpu/smt.hh:
cpu/inst_seq.hh:
cpu/intr_control.cc:
cpu/intr_control.hh:
cpu/memtest/memtest.cc:
cpu/memtest/memtest.hh:
cpu/pc_event.cc:
cpu/pc_event.hh:
cpu/simple_cpu/simple_cpu.cc:
cpu/simple_cpu/simple_cpu.hh:
cpu/static_inst.cc:
cpu/static_inst.hh:
dev/alpha_console.cc:
dev/alpha_console.hh:
dev/baddev.cc:
dev/baddev.hh:
dev/disk_image.cc:
dev/disk_image.hh:
dev/etherbus.cc:
dev/etherbus.hh:
dev/etherdump.cc:
dev/etherdump.hh:
dev/etherint.cc:
dev/etherint.hh:
dev/etherlink.cc:
dev/etherlink.hh:
dev/etherpkt.cc:
dev/etherpkt.hh:
dev/ethertap.cc:
dev/ethertap.hh:
dev/ide_ctrl.cc:
dev/ide_ctrl.hh:
dev/ide_disk.cc:
dev/ide_disk.hh:
dev/io_device.cc:
dev/io_device.hh:
dev/ns_gige.cc:
dev/ns_gige.hh:
dev/ns_gige_reg.h:
dev/pciconfigall.cc:
dev/pciconfigall.hh:
dev/pcidev.cc:
dev/pcidev.hh:
dev/pcireg.h:
dev/platform.cc:
dev/platform.hh:
dev/simple_disk.cc:
dev/simple_disk.hh:
dev/tsunami.cc:
dev/tsunami.hh:
dev/tsunami_cchip.cc:
dev/tsunami_cchip.hh:
dev/tsunami_io.cc:
dev/tsunami_io.hh:
dev/tsunami_pchip.cc:
dev/tsunami_pchip.hh:
dev/tsunami_uart.hh:
dev/tsunamireg.h:
docs/stl.hh:
kern/linux/linux.hh:
kern/linux/linux_syscalls.cc:
kern/linux/linux_syscalls.hh:
kern/linux/linux_system.cc:
kern/linux/linux_system.hh:
kern/system_events.cc:
kern/system_events.hh:
kern/tru64/dump_mbuf.cc:
kern/tru64/dump_mbuf.hh:
kern/tru64/mbuf.hh:
kern/tru64/printf.cc:
kern/tru64/printf.hh:
kern/tru64/tru64.hh:
kern/tru64/tru64_events.cc:
kern/tru64/tru64_events.hh:
kern/tru64/tru64_syscalls.cc:
kern/tru64/tru64_syscalls.hh:
kern/tru64/tru64_system.cc:
kern/tru64/tru64_system.hh:
sim/async.hh:
sim/builder.cc:
sim/builder.hh:
sim/debug.cc:
sim/debug.hh:
sim/eventq.cc:
sim/eventq.hh:
sim/host.hh:
sim/main.cc:
sim/param.cc:
sim/param.hh:
sim/process.cc:
sim/process.hh:
sim/serialize.cc:
sim/serialize.hh:
sim/sim_events.cc:
sim/sim_events.hh:
sim/sim_exit.hh:
sim/sim_object.cc:
sim/sim_object.hh:
sim/stat_control.cc:
sim/stat_control.hh:
sim/stats.hh:
sim/syscall_emul.cc:
sim/syscall_emul.hh:
sim/system.cc:
sim/system.hh:
sim/universe.cc:
test/bitvectest.cc:
test/circletest.cc:
test/cprintftest.cc:
test/initest.cc:
test/lru_test.cc:
test/nmtest.cc:
test/offtest.cc:
test/paramtest.cc:
test/rangetest.cc:
test/sized_test.cc:
test/stattest.cc:
test/strnumtest.cc:
test/symtest.cc:
test/tokentest.cc:
test/tracetest.cc:
util/m5/m5.c:
util/m5/m5op.h:
util/tap/tap.cc:
    Updated Copyright
dev/console.cc:
dev/console.hh:
    This code isn't ours, and shouldn't have our copyright

--HG--
extra : convert_revision : 598f2e5eab5d5d3de2c1e862b389086e3212f7c4
2004-06-08 13:37:27 -04:00

406 lines
12 KiB
C++

/*
* Copyright (c) 2001-2004 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.
*/
#include <unistd.h>
#include <fcntl.h>
#include <cstdio>
#include <string>
#include "base/intmath.hh"
#include "base/loader/object_file.hh"
#include "base/statistics.hh"
#include "cpu/exec_context.hh"
#include "cpu/full_cpu/smt.hh"
#include "cpu/full_cpu/thread.hh"
#include "eio/eio.hh"
#include "mem/functional_mem/main_memory.hh"
#include "sim/builder.hh"
#include "sim/fake_syscall.hh"
#include "sim/process.hh"
#include "sim/stats.hh"
#ifdef TARGET_ALPHA
#include "arch/alpha/alpha_tru64_process.hh"
#include "arch/alpha/alpha_linux_process.hh"
#endif
using namespace std;
//
// The purpose of this code is to fake the loader & syscall mechanism
// when there's no OS: thus there's no resone to use it in FULL_SYSTEM
// mode when we do have an OS
//
#ifdef FULL_SYSTEM
#error "process.cc not compatible with FULL_SYSTEM"
#endif
// current number of allocated processes
int num_processes = 0;
Process::Process(const string &name,
int stdin_fd, // initial I/O descriptors
int stdout_fd,
int stderr_fd)
: SimObject(name)
{
// allocate memory space
memory = new MainMemory(name + ".MainMem");
// allocate initial register file
init_regs = new RegFile;
memset(init_regs, 0, sizeof(RegFile));
// initialize first 3 fds (stdin, stdout, stderr)
fd_map[STDIN_FILENO] = stdin_fd;
fd_map[STDOUT_FILENO] = stdout_fd;
fd_map[STDERR_FILENO] = stderr_fd;
// mark remaining fds as free
for (int i = 3; i <= MAX_FD; ++i) {
fd_map[i] = -1;
}
num_syscalls = 0;
// other parameters will be initialized when the program is loaded
}
void
Process::regStats()
{
using namespace Stats;
num_syscalls
.name(name() + ".PROG:num_syscalls")
.desc("Number of system calls")
;
}
//
// static helper functions
//
int
Process::openInputFile(const string &filename)
{
int fd = open(filename.c_str(), O_RDONLY);
if (fd == -1) {
perror(NULL);
cerr << "unable to open \"" << filename << "\" for reading\n";
fatal("can't open input file");
}
return fd;
}
int
Process::openOutputFile(const string &filename)
{
int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774);
if (fd == -1) {
perror(NULL);
cerr << "unable to open \"" << filename << "\" for writing\n";
fatal("can't open output file");
}
return fd;
}
int
Process::registerExecContext(ExecContext *xc)
{
// add to list
int myIndex = execContexts.size();
execContexts.push_back(xc);
if (myIndex == 0) {
// first exec context for this process... initialize & enable
// copy process's initial regs struct
xc->regs = *init_regs;
// mark this context as active.
// activate with zero delay so that we start ticking right
// away on cycle 0
xc->activate(0);
}
// return CPU number to caller and increment available CPU count
return myIndex;
}
void
Process::replaceExecContext(int xcIndex, ExecContext *xc)
{
if (xcIndex >= execContexts.size()) {
panic("replaceExecContext: bad xcIndex, %d >= %d\n",
xcIndex, execContexts.size());
}
execContexts[xcIndex] = xc;
}
// map simulator fd sim_fd to target fd tgt_fd
void
Process::dup_fd(int sim_fd, int tgt_fd)
{
if (tgt_fd < 0 || tgt_fd > MAX_FD)
panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
fd_map[tgt_fd] = sim_fd;
}
// generate new target fd for sim_fd
int
Process::open_fd(int sim_fd)
{
int free_fd;
// in case open() returns an error, don't allocate a new fd
if (sim_fd == -1)
return -1;
// find first free target fd
for (free_fd = 0; fd_map[free_fd] >= 0; ++free_fd) {
if (free_fd == MAX_FD)
panic("Process::open_fd: out of file descriptors!");
}
fd_map[free_fd] = sim_fd;
return free_fd;
}
// look up simulator fd for given target fd
int
Process::sim_fd(int tgt_fd)
{
if (tgt_fd > MAX_FD)
return -1;
return fd_map[tgt_fd];
}
//
// need to declare these here since there is no concrete Process type
// that can be constructed (i.e., no REGISTER_SIM_OBJECT() macro call,
// which is where these get declared for concrete types).
//
DEFINE_SIM_OBJECT_CLASS_NAME("Process", Process)
////////////////////////////////////////////////////////////////////////
//
// LiveProcess member definitions
//
////////////////////////////////////////////////////////////////////////
static void
copyStringArray(vector<string> &strings, Addr array_ptr, Addr data_ptr,
FunctionalMemory *memory)
{
for (int i = 0; i < strings.size(); ++i) {
memory->access(Write, array_ptr, &data_ptr, sizeof(Addr));
memory->writeString(data_ptr, strings[i].c_str());
array_ptr += sizeof(Addr);
data_ptr += strings[i].size() + 1;
}
// add NULL terminator
data_ptr = 0;
memory->access(Write, array_ptr, &data_ptr, sizeof(Addr));
}
LiveProcess::LiveProcess(const string &name, ObjectFile *objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp)
: Process(name, stdin_fd, stdout_fd, stderr_fd)
{
prog_fname = argv[0];
prog_entry = objFile->entryPoint();
text_base = objFile->textBase();
text_size = objFile->textSize();
data_base = objFile->dataBase();
data_size = objFile->dataSize() + objFile->bssSize();
brk_point = RoundUp<uint64_t>(data_base + data_size, VMPageSize);
// load object file into target memory
objFile->loadSections(memory);
// Set up stack. On Alpha, stack goes below text section. This
// code should get moved to some architecture-specific spot.
stack_base = text_base - (409600+4096);
// Set up region for mmaps. Tru64 seems to start just above 0 and
// grow up from there.
mmap_base = 0x10000;
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);
// Calculate how much space we need for arg & env arrays.
int argv_array_size = sizeof(Addr) * (argv.size() + 1);
int envp_array_size = sizeof(Addr) * (envp.size() + 1);
int arg_data_size = 0;
for (int i = 0; i < argv.size(); ++i) {
arg_data_size += argv[i].size() + 1;
}
int env_data_size = 0;
for (int i = 0; i < envp.size(); ++i) {
env_data_size += envp[i].size() + 1;
}
int space_needed =
argv_array_size + envp_array_size + arg_data_size + env_data_size;
// for SimpleScalar compatibility
if (space_needed < 16384)
space_needed = 16384;
// set bottom of stack
stack_min = stack_base - space_needed;
// align it
stack_min &= ~7;
stack_size = stack_base - stack_min;
// map out initial stack contents
Addr argv_array_base = stack_min + sizeof(uint64_t); // room for argc
Addr envp_array_base = argv_array_base + argv_array_size;
Addr arg_data_base = envp_array_base + envp_array_size;
Addr env_data_base = arg_data_base + arg_data_size;
// write contents to stack
uint64_t argc = argv.size();
memory->access(Write, stack_min, &argc, sizeof(uint64_t));
copyStringArray(argv, argv_array_base, arg_data_base, memory);
copyStringArray(envp, envp_array_base, env_data_base, memory);
init_regs->intRegFile[ArgumentReg0] = argc;
init_regs->intRegFile[ArgumentReg1] = argv_array_base;
init_regs->intRegFile[StackPointerReg] = stack_min;
init_regs->intRegFile[GlobalPointerReg] = objFile->globalPointer();
init_regs->pc = prog_entry;
init_regs->npc = prog_entry + sizeof(MachInst);
}
LiveProcess *
LiveProcess::create(const string &name,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp)
{
LiveProcess *process = NULL;
ObjectFile *objFile = createObjectFile(argv[0]);
if (objFile == NULL) {
fatal("Can't load object file %s", argv[0]);
}
// check object type & set up syscall emulation pointer
if (objFile->getArch() == ObjectFile::Alpha) {
switch (objFile->getOpSys()) {
case ObjectFile::Tru64:
process = new AlphaTru64Process(name, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
case ObjectFile::Linux:
process = new AlphaLinuxProcess(name, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
default:
fatal("Unknown/unsupported operating system.");
}
} else {
fatal("Unknown object file architecture.");
}
delete objFile;
if (process == NULL)
fatal("Unknown error creating process object.");
return process;
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
VectorParam<string> cmd;
Param<string> input;
Param<string> output;
VectorParam<string> env;
END_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
BEGIN_INIT_SIM_OBJECT_PARAMS(LiveProcess)
INIT_PARAM(cmd, "command line (executable plus arguments)"),
INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
INIT_PARAM(env, "environment settings")
END_INIT_SIM_OBJECT_PARAMS(LiveProcess)
CREATE_SIM_OBJECT(LiveProcess)
{
// initialize file descriptors to default: same as simulator
int stdin_fd = input.isValid() ? Process::openInputFile(input) : 0;
int stdout_fd = output.isValid() ? Process::openOutputFile(output) : 1;
int stderr_fd = output.isValid() ? stdout_fd : 2;
// dummy for default env
vector<string> null_vec;
// We do this with "temp" because of the bogus compiler warning
// you get with g++ 2.95 -O if you just "return new LiveProcess(..."
LiveProcess *temp = LiveProcess::create(getInstanceName(),
stdin_fd, stdout_fd, stderr_fd,
cmd,
env.isValid() ? env : null_vec);
return temp;
}
REGISTER_SIM_OBJECT("LiveProcess", LiveProcess)