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Diffstat (limited to 'sim/process.cc')
| -rw-r--r-- | sim/process.cc | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/sim/process.cc b/sim/process.cc deleted file mode 100644 index a84a4f7ba..000000000 --- a/sim/process.cc +++ /dev/null @@ -1,446 +0,0 @@ -/* - * Copyright (c) 2001-2005 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. - */ - -#include <unistd.h> -#include <fcntl.h> - -#include <cstdio> -#include <string> - -#include "base/intmath.hh" -#include "base/loader/object_file.hh" -#include "base/loader/symtab.hh" -#include "base/statistics.hh" -#include "config/full_system.hh" -#include "cpu/cpu_exec_context.hh" -#include "cpu/exec_context.hh" -#include "cpu/smt.hh" -#include "encumbered/cpu/full/thread.hh" -#include "encumbered/eio/eio.hh" -#include "encumbered/mem/functional/main.hh" -#include "sim/builder.hh" -#include "sim/process.hh" -#include "sim/stats.hh" -#include "sim/syscall_emul.hh" - -#include "arch/process.hh" - -using namespace std; -using namespace TheISA; - -// -// 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 -// -#if FULL_SYSTEM -#error "process.cc not compatible with FULL_SYSTEM" -#endif - -// current number of allocated processes -int num_processes = 0; - -Process::Process(const string &nm, - int stdin_fd, // initial I/O descriptors - int stdout_fd, - int stderr_fd) - : SimObject(nm) -{ - // allocate memory space - memory = new MainMemory(nm + ".MainMem"); - - // allocate initial register file - init_regs = new RegFile; - memset(init_regs, 0, sizeof(RegFile)); - - cpuXC = new CPUExecContext(init_regs); - - // 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; - } - - mmap_start = mmap_end = 0; - nxm_start = nxm_end = 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) { - // copy process's initial regs struct - // Hack for now to copy init regs - xc->copyArchRegs(cpuXC->getProxy()); - } - - // return CPU number to caller and increment available CPU count - return myIndex; -} - -void -Process::startup() -{ - if (execContexts.empty()) - return; - - // first exec context for this process... initialize & enable - ExecContext *xc = execContexts[0]; - - // mark this context as active so it will start ticking. - xc->activate(0); -} - -void -Process::replaceExecContext(ExecContext *xc, int xcIndex) -{ - 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::alloc_fd(int sim_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 (int free_fd = 0; free_fd < MAX_FD; ++free_fd) { - if (fd_map[free_fd] == -1) { - fd_map[free_fd] = sim_fd; - return free_fd; - } - } - - panic("Process::alloc_fd: out of file descriptors!"); -} - - -// free target fd (e.g., after close) -void -Process::free_fd(int tgt_fd) -{ - if (fd_map[tgt_fd] == -1) - warn("Process::free_fd: request to free unused fd %d", tgt_fd); - - fd_map[tgt_fd] = -1; -} - - -// 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) -{ - Addr data_ptr_swap; - for (int i = 0; i < strings.size(); ++i) { - data_ptr_swap = htog(data_ptr); - memory->access(Write, array_ptr, &data_ptr_swap, 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 &nm, ObjectFile *objFile, - int stdin_fd, int stdout_fd, int stderr_fd, - vector<string> &argv, vector<string> &envp) - : Process(nm, 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(data_base + data_size, VMPageSize); - - // load object file into target memory - objFile->loadSections(memory); - - // load up symbols, if any... these may be used for debugging or - // profiling. - if (!debugSymbolTable) { - debugSymbolTable = new SymbolTable(); - if (!objFile->loadGlobalSymbols(debugSymbolTable) || - !objFile->loadLocalSymbols(debugSymbolTable)) { - // didn't load any symbols - delete debugSymbolTable; - debugSymbolTable = NULL; - } - } - - // 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_start = mmap_end = 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(); - argc = htog(argc); - 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); - - cpuXC->setIntReg(ArgumentReg0, argc); - cpuXC->setIntReg(ArgumentReg1, argv_array_base); - cpuXC->setIntReg(StackPointerReg, stack_min); - cpuXC->setIntReg(GlobalPointerReg, objFile->globalPointer()); - cpuXC->setPC(prog_entry); - cpuXC->setNextPC(prog_entry + sizeof(MachInst)); -} - -void -LiveProcess::syscall(ExecContext *xc) -{ - num_syscalls++; - - int64_t callnum = xc->readIntReg(SyscallNumReg); - - SyscallDesc *desc = getDesc(callnum); - if (desc == NULL) - fatal("Syscall %d out of range", callnum); - - desc->doSyscall(callnum, this, xc); -} - -LiveProcess * -LiveProcess::create(const string &nm, - int stdin_fd, int stdout_fd, int stderr_fd, - string executable, - vector<string> &argv, vector<string> &envp) -{ - LiveProcess *process = NULL; - ObjectFile *objFile = createObjectFile(executable); - if (objFile == NULL) { - fatal("Can't load object file %s", executable); - } - - // set up syscall emulation pointer for the current ISA - process = createProcess(nm, objFile, - stdin_fd, stdout_fd, stderr_fd, - argv, envp); - - delete objFile; - - if (process == NULL) - fatal("Unknown error creating process object."); - - return process; -} - - - -BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess) - - VectorParam<string> cmd; - Param<string> executable; - 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(executable, "executable (overrides cmd[0] if set)"), - 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) -{ - string in = input; - string out = output; - - // initialize file descriptors to default: same as simulator - int stdin_fd, stdout_fd, stderr_fd; - - if (in == "stdin" || in == "cin") - stdin_fd = STDIN_FILENO; - else - stdin_fd = Process::openInputFile(input); - - if (out == "stdout" || out == "cout") - stdout_fd = STDOUT_FILENO; - else if (out == "stderr" || out == "cerr") - stdout_fd = STDERR_FILENO; - else - stdout_fd = Process::openOutputFile(out); - - stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO; - - return LiveProcess::create(getInstanceName(), - stdin_fd, stdout_fd, stderr_fd, - (string)executable == "" ? cmd[0] : executable, - cmd, env); -} - -REGISTER_SIM_OBJECT("LiveProcess", LiveProcess) |