emul_driver.hh (11624:9796e43e751d) emul_driver.hh (11851:824055fe6b30)
1/*
2 * Copyright (c) 2014 Advanced Micro Devices, Inc.
3 * All rights reserved
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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31#ifndef __SIM_EMUL_DRIVER_HH
32#define __SIM_EMUL_DRIVER_HH
33
34#include <string>
35
36#include "params/EmulatedDriver.hh"
37#include "sim/sim_object.hh"
38
1/*
2 * Copyright (c) 2014 Advanced Micro Devices, Inc.
3 * All rights reserved
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 22 unchanged lines hidden (view full) ---

31#ifndef __SIM_EMUL_DRIVER_HH
32#define __SIM_EMUL_DRIVER_HH
33
34#include <string>
35
36#include "params/EmulatedDriver.hh"
37#include "sim/sim_object.hh"
38
39class LiveProcess;
39class Process;
40class ThreadContext;
41
42/**
43 * EmulatedDriver is an abstract base class for fake SE-mode device drivers.
44 *
45 * Specific drivers that allow applications to communicate with simulated
46 * hardware inside gem5 can be created by deriving from this class and
47 * overriding the abstract virtual methods.

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69 bool match(const std::string &s) const { return (s == filename); }
70
71 /**
72 * Abstract method, invoked when the user program calls open() on
73 * the device driver. The parameters are the same as those passed
74 * to openFunc() (q.v.).
75 * @return A newly allocated target fd, or -1 on error.
76 */
40class ThreadContext;
41
42/**
43 * EmulatedDriver is an abstract base class for fake SE-mode device drivers.
44 *
45 * Specific drivers that allow applications to communicate with simulated
46 * hardware inside gem5 can be created by deriving from this class and
47 * overriding the abstract virtual methods.

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69 bool match(const std::string &s) const { return (s == filename); }
70
71 /**
72 * Abstract method, invoked when the user program calls open() on
73 * the device driver. The parameters are the same as those passed
74 * to openFunc() (q.v.).
75 * @return A newly allocated target fd, or -1 on error.
76 */
77 virtual int open(LiveProcess *p, ThreadContext *tc,
77 virtual int open(Process *p, ThreadContext *tc,
78 int mode, int flags) = 0;
79
80 /**
81 * Abstract method, invoked when the user program calls ioctl() on
82 * the file descriptor returned by a previous open(). The parameters
83 * are the same as those passed in to ioctlFunc() (q.v.).
84 * @return The return code for the ioctl, or the negation of the errno
85 * (see the SyscallReturn class).
86 */
78 int mode, int flags) = 0;
79
80 /**
81 * Abstract method, invoked when the user program calls ioctl() on
82 * the file descriptor returned by a previous open(). The parameters
83 * are the same as those passed in to ioctlFunc() (q.v.).
84 * @return The return code for the ioctl, or the negation of the errno
85 * (see the SyscallReturn class).
86 */
87 virtual int ioctl(LiveProcess *p, ThreadContext *tc, unsigned req) = 0;
87 virtual int ioctl(Process *p, ThreadContext *tc, unsigned req) = 0;
88
89 /**
90 * Virtual method, invoked when the user program calls mmap() on
91 * the file descriptor returned by a previous open(). The parameters
92 * are the same as those passed in to mmapFunc() (q.v.).
93 * @return The return ptr for the mmap, or the negation of the errno
94 * (see the SyscallReturn class).
95 */
88
89 /**
90 * Virtual method, invoked when the user program calls mmap() on
91 * the file descriptor returned by a previous open(). The parameters
92 * are the same as those passed in to mmapFunc() (q.v.).
93 * @return The return ptr for the mmap, or the negation of the errno
94 * (see the SyscallReturn class).
95 */
96 virtual Addr mmap(LiveProcess *p, ThreadContext *tc, Addr start,
96 virtual Addr mmap(Process *p, ThreadContext *tc, Addr start,
97 uint64_t length, int prot, int tgtFlags, int tgtFd,
98 int offset) { return -EBADF; }
99};
100
101#endif // __SIM_EMUL_DRIVER_HH
97 uint64_t length, int prot, int tgtFlags, int tgtFd,
98 int offset) { return -EBADF; }
99};
100
101#endif // __SIM_EMUL_DRIVER_HH