#if !FULL_SYSTEM
+#include <string>
#include <vector>
+#include "arch/registers.hh"
#include "base/statistics.hh"
+#include "base/types.hh"
+#include "config/the_isa.hh"
#include "sim/sim_object.hh"
+#include "sim/syscallreturn.hh"
-class CPUExecContext;
-class ExecContext;
-class SyscallDesc;
class PageTable;
-class TranslatingPort;
+class ProcessParams;
+class LiveProcessParams;
+class SyscallDesc;
class System;
+class ThreadContext;
+class SETranslatingPortProxy;
-void
-copyStringArray(std::vector<std::string> &strings, Addr array_ptr,
- Addr data_ptr, TranslatingPort* memPort);
+template<class IntType>
+struct AuxVector
+{
+ IntType a_type;
+ IntType a_val;
+
+ AuxVector()
+ {}
+
+ AuxVector(IntType type, IntType val);
+};
class Process : public SimObject
{
/// running on.
System *system;
- // have we initialized an execution context from this process? If
- // yes, subsequent contexts are assumed to be for dynamically
- // created threads and are not initialized.
- bool initialContextLoaded;
-
- // execution contexts associated with this process
- std::vector<ExecContext *> execContexts;
+ // thread contexts associated with this process
+ std::vector<int> contextIds;
// number of CPUs (esxec contexts, really) assigned to this process.
- unsigned int numCpus() { return execContexts.size(); }
+ unsigned int numCpus() { return contextIds.size(); }
// record of blocked context
struct WaitRec
{
Addr waitChan;
- ExecContext *waitingContext;
+ ThreadContext *waitingContext;
- WaitRec(Addr chan, ExecContext *ctx)
+ WaitRec(Addr chan, ThreadContext *ctx)
: waitChan(chan), waitingContext(ctx)
- { }
+ { }
};
// list of all blocked contexts
std::list<WaitRec> waitList;
- Addr brk_point; // top of the data segment
+ Addr brk_point; // top of the data segment
- Addr stack_base; // stack segment base (highest address)
- unsigned stack_size; // initial stack size
- Addr stack_min; // lowest address accessed on the stack
+ Addr stack_base; // stack segment base (highest address)
+ unsigned stack_size; // initial stack size
+ Addr stack_min; // lowest address accessed on the stack
+
+ // The maximum size allowed for the stack.
+ Addr max_stack_size;
// addr to use for next stack region (for multithreaded apps)
Addr next_thread_stack_base;
Addr nxm_start;
Addr nxm_end;
- std::string prog_fname; // file name
+ std::string prog_fname; // file name
- Stats::Scalar<> num_syscalls; // number of syscalls executed
+ Stats::Scalar num_syscalls; // number of syscalls executed
protected:
// constructor
- Process(const std::string &nm,
- System *_system,
- int stdin_fd, // initial I/O descriptors
- int stdout_fd,
- int stderr_fd);
+ Process(ProcessParams *params);
- // post initialization startup
- virtual void startup();
+ virtual void initState();
protected:
/// Memory object for initialization (image loading)
- TranslatingPort *initVirtMem;
+ SETranslatingPortProxy *initVirtMem;
public:
PageTable *pTable;
+ //This id is assigned by m5 and is used to keep process' tlb entries
+ //separated.
+ uint64_t M5_pid;
+
+ class FdMap
+ {
+ public:
+ int fd;
+ std::string filename;
+ int mode;
+ int flags;
+ bool isPipe;
+ int readPipeSource;
+ uint64_t fileOffset;
+
+ FdMap()
+ : fd(-1), filename("NULL"), mode(0), flags(0),
+ isPipe(false), readPipeSource(0), fileOffset(0)
+ { }
+
+ void serialize(std::ostream &os);
+ void unserialize(Checkpoint *cp, const std::string §ion);
+ };
+
private:
// file descriptor remapping support
- static const int MAX_FD = 256; // max legal fd value
- int fd_map[MAX_FD+1];
+ static const int MAX_FD = 256; // max legal fd value
+ FdMap fd_map[MAX_FD+1];
+
public:
// static helper functions to generate file descriptors for constructor
// override of virtual SimObject method: register statistics
virtual void regStats();
- // register an execution context for this process.
- // returns xc's cpu number (index into execContexts[])
- int registerExecContext(ExecContext *xc);
-
+ // After getting registered with system object, tell process which
+ // system-wide context id it is assigned.
+ void assignThreadContext(int context_id)
+ {
+ contextIds.push_back(context_id);
+ }
- void replaceExecContext(ExecContext *xc, int xcIndex);
+ // Find a free context to use
+ ThreadContext *findFreeContext();
// map simulator fd sim_fd to target fd tgt_fd
void dup_fd(int sim_fd, int tgt_fd);
// generate new target fd for sim_fd
- int alloc_fd(int sim_fd);
+ int alloc_fd(int sim_fd, std::string filename, int flags, int mode,
+ bool pipe);
// free target fd (e.g., after close)
void free_fd(int tgt_fd);
// look up simulator fd for given target fd
int sim_fd(int tgt_fd);
- virtual void syscall(int64_t callnum, ExecContext *xc) = 0;
+ // look up simulator fd_map object for a given target fd
+ FdMap *sim_fd_obj(int tgt_fd);
+
+ // fix all offsets for currently open files and save them
+ void fix_file_offsets();
+
+ // find all offsets for currently open files and save them
+ void find_file_offsets();
+
+ // set the source of this read pipe for a checkpoint resume
+ void setReadPipeSource(int read_pipe_fd, int source_fd);
+
+ virtual void syscall(int64_t callnum, ThreadContext *tc) = 0;
+
+ void allocateMem(Addr vaddr, int64_t size, bool clobber = false);
+
+ /// Attempt to fix up a fault at vaddr by allocating a page on the stack.
+ /// @return Whether the fault has been fixed.
+ bool fixupStackFault(Addr vaddr);
+
+ void serialize(std::ostream &os);
+ void unserialize(Checkpoint *cp, const std::string §ion);
};
//
ObjectFile *objFile;
std::vector<std::string> argv;
std::vector<std::string> envp;
+ std::string cwd;
+
+ LiveProcess(LiveProcessParams *params, ObjectFile *objFile);
- LiveProcess(const std::string &nm, ObjectFile *objFile,
- System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
- std::vector<std::string> &argv,
- std::vector<std::string> &envp);
+ // Id of the owner of the process
+ uint64_t __uid;
+ uint64_t __euid;
+ uint64_t __gid;
+ uint64_t __egid;
- virtual void argsInit(int intSize, int pageSize);
+ // pid of the process and it's parent
+ uint64_t __pid;
+ uint64_t __ppid;
public:
- virtual void syscall(int64_t callnum, ExecContext *xc);
- virtual SyscallDesc* getDesc(int callnum) = 0;
+ enum AuxiliaryVectorType {
+ M5_AT_NULL = 0,
+ M5_AT_IGNORE = 1,
+ M5_AT_EXECFD = 2,
+ M5_AT_PHDR = 3,
+ M5_AT_PHENT = 4,
+ M5_AT_PHNUM = 5,
+ M5_AT_PAGESZ = 6,
+ M5_AT_BASE = 7,
+ M5_AT_FLAGS = 8,
+ M5_AT_ENTRY = 9,
+ M5_AT_NOTELF = 10,
+ M5_AT_UID = 11,
+ M5_AT_EUID = 12,
+ M5_AT_GID = 13,
+ M5_AT_EGID = 14,
+ // The following may be specific to Linux
+ M5_AT_PLATFORM = 15,
+ M5_AT_HWCAP = 16,
+ M5_AT_CLKTCK = 17,
+
+ M5_AT_SECURE = 23,
+ M5_BASE_PLATFORM = 24,
+ M5_AT_RANDOM = 25,
+
+ M5_AT_EXECFN = 31,
+
+ M5_AT_VECTOR_SIZE = 44
+ };
+
+ inline uint64_t uid() {return __uid;}
+ inline uint64_t euid() {return __euid;}
+ inline uint64_t gid() {return __gid;}
+ inline uint64_t egid() {return __egid;}
+ inline uint64_t pid() {return __pid;}
+ inline uint64_t ppid() {return __ppid;}
+
+ std::string
+ fullPath(const std::string &filename)
+ {
+ if (filename[0] == '/' || cwd.empty())
+ return filename;
+
+ std::string full = cwd;
+
+ if (cwd[cwd.size() - 1] != '/')
+ full += '/';
+
+ return full + filename;
+ }
+
+ std::string getcwd() const { return cwd; }
+
+ virtual void syscall(int64_t callnum, ThreadContext *tc);
+
+ virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int &i) = 0;
+ virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width);
+ virtual void setSyscallArg(ThreadContext *tc,
+ int i, TheISA::IntReg val) = 0;
+ virtual void setSyscallReturn(ThreadContext *tc,
+ SyscallReturn return_value) = 0;
+
+ virtual SyscallDesc *getDesc(int callnum) = 0;
+
+ // this function is used to create the LiveProcess object, since
+ // we can't tell which subclass of LiveProcess to use until we
+ // open and look at the object file.
+ static LiveProcess *create(LiveProcessParams *params);
};
projects / gem5.git / blobdiff