syscall_emul.cc (10223:34f48d0dac97) syscall_emul.cc (10253:00086092d9f7)
1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
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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50#include "sim/system.hh"
51
52using namespace std;
53using namespace TheISA;
54
55void
56SyscallDesc::doSyscall(int callnum, LiveProcess *process, ThreadContext *tc)
57{
1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
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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50#include "sim/system.hh"
51
52using namespace std;
53using namespace TheISA;
54
55void
56SyscallDesc::doSyscall(int callnum, LiveProcess *process, ThreadContext *tc)
57{
58#if TRACING_ON
59 int index = 0;
60#endif
61 DPRINTFR(SyscallVerbose,
62 "%d: %s: syscall %s called w/arguments %d,%d,%d,%d\n",
63 curTick(), tc->getCpuPtr()->name(), name,
64 process->getSyscallArg(tc, index),
65 process->getSyscallArg(tc, index),
66 process->getSyscallArg(tc, index),
67 process->getSyscallArg(tc, index));
58 if (DTRACE(SyscallVerbose)) {
59 int index = 0;
60 IntReg arg[4];
68
61
62 // we can't just put the calls to getSyscallArg() in the
63 // DPRINTF arg list, because C++ doesn't guarantee their order
64 for (int i = 0; i < 4; ++i)
65 arg[i] = process->getSyscallArg(tc, index);
66
67 DPRINTFNR("%d: %s: syscall %s called w/arguments %d,%d,%d,%d\n",
68 curTick(), tc->getCpuPtr()->name(), name,
69 arg[0], arg[1], arg[2], arg[3]);
70 }
71
69 SyscallReturn retval = (*funcPtr)(this, callnum, process, tc);
70
71 DPRINTFR(SyscallVerbose, "%d: %s: syscall %s returns %d\n",
72 curTick(), tc->getCpuPtr()->name(), name, retval.encodedValue());
73
74 if (!(flags & SyscallDesc::SuppressReturnValue))
75 process->setSyscallReturn(tc, retval);
76}

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86}
87
88
89SyscallReturn
90ignoreFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
91 ThreadContext *tc)
92{
93 int index = 0;
72 SyscallReturn retval = (*funcPtr)(this, callnum, process, tc);
73
74 DPRINTFR(SyscallVerbose, "%d: %s: syscall %s returns %d\n",
75 curTick(), tc->getCpuPtr()->name(), name, retval.encodedValue());
76
77 if (!(flags & SyscallDesc::SuppressReturnValue))
78 process->setSyscallReturn(tc, retval);
79}

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89}
90
91
92SyscallReturn
93ignoreFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
94 ThreadContext *tc)
95{
96 int index = 0;
94 warn("ignoring syscall %s(%d, %d, ...)", desc->name,
95 process->getSyscallArg(tc, index), process->getSyscallArg(tc, index));
97 warn("ignoring syscall %s(%d, ...)", desc->name,
98 process->getSyscallArg(tc, index));
96
97 return 0;
98}
99
100
101SyscallReturn
102ignoreWarnOnceFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
103 ThreadContext *tc)
104{
105 int index = 0;
99
100 return 0;
101}
102
103
104SyscallReturn
105ignoreWarnOnceFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
106 ThreadContext *tc)
107{
108 int index = 0;
106 warn_once("ignoring syscall %s(%d, %d, ...)", desc->name,
107 process->getSyscallArg(tc, index), process->getSyscallArg(tc, index));
109 warn_once("ignoring syscall %s(%d, ...)", desc->name,
110 process->getSyscallArg(tc, index));
108
109 return 0;
110}
111
112
113SyscallReturn
114exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
115 ThreadContext *tc)

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112 return 0;
113}
114
115
116SyscallReturn
117exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
118 ThreadContext *tc)

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