syscall_desc.hh (12296:e127a1bae7bd) syscall_desc.hh (13995:5d459168a680)
1/*
2 * Copyright (c) 2012-2013, 2015 ARM Limited
3 * Copyright (c) 2015-2016 Advanced Micro Devices, Inc.
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating

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51#include "base/types.hh"
52
53class Process;
54class SyscallDesc;
55class SyscallReturn;
56class ThreadContext;
57
58SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
1/*
2 * Copyright (c) 2012-2013, 2015 ARM Limited
3 * Copyright (c) 2015-2016 Advanced Micro Devices, Inc.
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating

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51#include "base/types.hh"
52
53class Process;
54class SyscallDesc;
55class SyscallReturn;
56class ThreadContext;
57
58SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
59 Process *p, ThreadContext *tc);
59 ThreadContext *tc);
60
61/**
62 * This class provides the wrapper interface for the system call
63 * implementations which are defined in the sim/syscall_emul files and
64 * bound to the ISAs in the architecture specific code
65 * (i.e. arch/X86/linux/process.cc).
66 */
67class SyscallDesc {
68 public:
69 /** Typedef the function pointer here to clean up code below */
70 typedef SyscallReturn (*SyscallExecutor)(SyscallDesc*, int num,
60
61/**
62 * This class provides the wrapper interface for the system call
63 * implementations which are defined in the sim/syscall_emul files and
64 * bound to the ISAs in the architecture specific code
65 * (i.e. arch/X86/linux/process.cc).
66 */
67class SyscallDesc {
68 public:
69 /** Typedef the function pointer here to clean up code below */
70 typedef SyscallReturn (*SyscallExecutor)(SyscallDesc*, int num,
71 Process*, ThreadContext*);
71 ThreadContext*);
72
73 SyscallDesc(const char *name,
74 SyscallExecutor sys_exec=unimplementedFunc, int flags=0)
75 : _name(name), executor(sys_exec), _flags(flags), _warned(false)
76 {
77 }
78
79 /** Provide a mechanism to specify behavior for abnormal system calls */

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93 /**
94 * Interface for invoking the system call funcion pointer. Note that
95 * this acts as a gateway for all system calls and serves a good point
96 * to add filters for behaviors or apply checks for all system calls.
97 * @param callnum Number associated with call (by operating system)
98 * @param proc Handle for the owning Process to pass information
99 * @param tc Handle for owning ThreadContext to pass information
100 */
72
73 SyscallDesc(const char *name,
74 SyscallExecutor sys_exec=unimplementedFunc, int flags=0)
75 : _name(name), executor(sys_exec), _flags(flags), _warned(false)
76 {
77 }
78
79 /** Provide a mechanism to specify behavior for abnormal system calls */

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93 /**
94 * Interface for invoking the system call funcion pointer. Note that
95 * this acts as a gateway for all system calls and serves a good point
96 * to add filters for behaviors or apply checks for all system calls.
97 * @param callnum Number associated with call (by operating system)
98 * @param proc Handle for the owning Process to pass information
99 * @param tc Handle for owning ThreadContext to pass information
100 */
101 void doSyscall(int callnum, Process *proc, ThreadContext *tc,
102 Fault *fault);
101 void doSyscall(int callnum, ThreadContext *tc, Fault *fault);
103
104 /**
105 * Return false if WarnOnce is set and a warning has already been issued.
106 * Otherwise, return true. Updates state as a side effect to help
107 * keep track of issued warnings.
108 */
109 bool needWarning();
110

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103 /**
104 * Return false if WarnOnce is set and a warning has already been issued.
105 * Otherwise, return true. Updates state as a side effect to help
106 * keep track of issued warnings.
107 */
108 bool needWarning();
109

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