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-rw-r--r--src/sim/process.hh259
1 files changed, 89 insertions, 170 deletions
diff --git a/src/sim/process.hh b/src/sim/process.hh
index f3d0f1b62..dde131628 100644
--- a/src/sim/process.hh
+++ b/src/sim/process.hh
@@ -33,6 +33,8 @@
#ifndef __PROCESS_HH__
#define __PROCESS_HH__
+#include <inttypes.h>
+
#include <array>
#include <map>
#include <string>
@@ -56,30 +58,9 @@ class SyscallReturn;
class System;
class ThreadContext;
-template<class IntType>
-struct AuxVector
-{
- IntType a_type;
- IntType a_val;
-
- AuxVector()
- {}
-
- AuxVector(IntType type, IntType val);
-};
-
class Process : public SimObject
{
public:
-
- /// Pointer to object representing the system this process is
- /// running on.
- System *system;
-
- // thread contexts associated with this process
- std::vector<ContextID> contextIds;
-
- // record of blocked context
struct WaitRec
{
Addr waitChan;
@@ -87,82 +68,59 @@ class Process : public SimObject
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 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;
-
- // Base of region for mmaps (when user doesn't specify an address).
- Addr mmap_end;
-
- // Does mmap region grow upward or downward from mmap_end? Most
- // platforms grow downward, but a few (such as Alpha) grow upward
- // instead, so they can override thie method to return false.
- virtual bool mmapGrowsDown() const { return true; }
-
- Stats::Scalar num_syscalls; // number of syscalls executed
+ Process(ProcessParams *params, ObjectFile *obj_file);
- protected:
- // constructor
- Process(ProcessParams *params);
+ void serialize(CheckpointOut &cp) const override;
+ void unserialize(CheckpointIn &cp) override;
void initState() override;
-
DrainState drain() override;
- public:
-
- // flag for using architecture specific page table
- bool useArchPT;
- // running KvmCPU in SE mode requires special initialization
- bool kvmInSE;
-
- PageTableBase* pTable;
+ 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;
- protected:
- /// Memory proxy for initialization (image loading)
- SETranslatingPortProxy initVirtMem;
+ 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; }
- private:
- static const int NUM_FDS = 1024;
+ const char *progName() const { return executable.c_str(); }
+ std::string fullPath(const std::string &filename);
+ std::string getcwd() const { return cwd; }
- // File descriptor remapping support.
- std::shared_ptr<std::array<FDEntry, NUM_FDS>> fd_array;
+ /**
+ * Find an emulated device driver.
+ *
+ * @param filename Name of the device (under /dev)
+ * @return Pointer to driver object if found, else NULL
+ */
+ EmulatedDriver *findDriver(std::string filename);
- // Standard file descriptor options for initialization and checkpoints.
- std::map<std::string, int> imap;
- std::map<std::string, int> oemap;
+ // This function acts as a callback to update the bias value in
+ // the object file because the parameters needed to calculate the
+ // bias are not available when the object file is created.
+ void updateBias();
+ Addr getBias();
+ Addr getStartPC();
+ ObjectFile *getInterpreter();
- public:
// inherit file descriptor map from another process (necessary for clone)
void inheritFDArray(Process *p);
// override of virtual SimObject method: register statistics
void regStats() override;
- // After getting registered with system object, tell process which
- // system-wide context id it is assigned.
- void assignThreadContext(ContextID context_id)
- {
- contextIds.push_back(context_id);
- }
-
- // Find a free context to use
- ThreadContext *findFreeContext();
-
// generate new target fd for sim_fd
int allocFD(int sim_fd, const std::string& filename, int flags, int mode,
bool pipe);
@@ -199,6 +157,24 @@ class Process : public SimObject
/// @return Whether the fault has been fixed.
bool fixupStackFault(Addr vaddr);
+ // After getting registered with system object, tell process which
+ // system-wide context id it is assigned.
+ void
+ assignThreadContext(ContextID context_id)
+ {
+ contextIds.push_back(context_id);
+ }
+
+ // Find a free context to use
+ ThreadContext *findFreeContext();
+
+ /**
+ * Does mmap region grow upward or downward from mmap_end? Most
+ * platforms grow downward, but a few (such as Alpha) grow upward
+ * instead, so they can override this method to return false.
+ */
+ virtual bool mmapGrowsDown() const { return true; }
+
/**
* Maps a contiguous range of virtual addresses in this process's
* address space to a contiguous range of physical addresses.
@@ -214,19 +190,47 @@ class Process : public SimObject
*/
bool map(Addr vaddr, Addr paddr, int size, bool cacheable = true);
- void serialize(CheckpointOut &cp) const override;
- void unserialize(CheckpointIn &cp) override;
+ // list of all blocked contexts
+ std::list<WaitRec> waitList;
+
+ // thread contexts associated with this process
+ std::vector<ContextID> contextIds;
+
+ // system object which owns this process
+ System *system;
+
+ Addr brk_point; // top of the data segment
+ Addr stack_base; // stack segment base
+ unsigned stack_size; // initial stack size
+ Addr stack_min; // furthest address accessed from stack base
+ Addr max_stack_size; // the maximum size allowed for the stack
+ Addr next_thread_stack_base; // addr for next region w/ multithreaded apps
+ Addr mmap_end; // base of automatic mmap region allocs
+
+ Stats::Scalar num_syscalls; // track how many system calls are executed
+
+ bool useArchPT; // flag for using architecture specific page table
+ bool kvmInSE; // running KVM requires special initialization
+
+ PageTableBase* pTable;
+
+ SETranslatingPortProxy initVirtMem; // memory proxy for initial image load
+
+ static const int NUM_FDS = 1024;
+
+ // File descriptor remapping support.
+ std::shared_ptr<std::array<FDEntry, NUM_FDS>> fd_array;
+
+ // Standard file descriptor options for initialization and checkpoints.
+ std::map<std::string, int> imap;
+ std::map<std::string, int> oemap;
- protected:
ObjectFile *objFile;
std::vector<std::string> argv;
std::vector<std::string> envp;
std::string cwd;
std::string executable;
- Process(ProcessParams *params, ObjectFile *obj_file);
-
- public:
// Id of the owner of the process
uint64_t _uid;
uint64_t _euid;
@@ -239,91 +243,6 @@ class Process : public SimObject
// Emulated drivers available to this process
std::vector<EmulatedDriver *> drivers;
-
- 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; }
-
- // provide program name for debug messages
- const char *progName() const { return executable.c_str(); }
-
- 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; }
-
- 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;
-
- /**
- * Find an emulated device driver.
- *
- * @param filename Name of the device (under /dev)
- * @return Pointer to driver object if found, else NULL
- */
- EmulatedDriver *findDriver(std::string filename);
-
- // This function acts as a callback to update the bias value in
- // the object file because the parameters needed to calculate the
- // bias are not available when the object file is created.
- void updateBias();
-
- ObjectFile *getInterpreter();
-
- Addr getBias();
- Addr getStartPC();
};
#endif // __PROCESS_HH__
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 08:16:53 +0000