process.cc (13614:52c5311db96b) process.cc (13894:8603648c1679)
1/*
2 * Copyright (c) 2003-2004 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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77void
78AlphaProcess::argsInit(int intSize, int pageSize)
79{
80 // Patch the ld_bias for dynamic executables.
81 updateBias();
82
83 objFile->loadSections(initVirtMem);
84
1/*
2 * Copyright (c) 2003-2004 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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77void
78AlphaProcess::argsInit(int intSize, int pageSize)
79{
80 // Patch the ld_bias for dynamic executables.
81 updateBias();
82
83 objFile->loadSections(initVirtMem);
84
85 typedef AuxVector<uint64_t> auxv_t;
86 std::vector<auxv_t> auxv;
85 std::vector<AuxVector<uint64_t>> auxv;
87
88 ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
89 if (elfObject)
90 {
91 // modern glibc uses a bunch of auxiliary vectors to set up
92 // TLS as well as do a bunch of other stuff
93 // these vectors go on the bottom of the stack, below argc/argv/envp
94 // pointers but above actual arg strings
95 // I don't have all the ones glibc looks at here, but so far it doesn't
96 // seem to be a problem.
97 // check out _dl_aux_init() in glibc/elf/dl-support.c for details
98 // --Lisa
86
87 ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
88 if (elfObject)
89 {
90 // modern glibc uses a bunch of auxiliary vectors to set up
91 // TLS as well as do a bunch of other stuff
92 // these vectors go on the bottom of the stack, below argc/argv/envp
93 // pointers but above actual arg strings
94 // I don't have all the ones glibc looks at here, but so far it doesn't
95 // seem to be a problem.
96 // check out _dl_aux_init() in glibc/elf/dl-support.c for details
97 // --Lisa
99 auxv.push_back(auxv_t(M5_AT_PAGESZ, AlphaISA::PageBytes));
100 auxv.push_back(auxv_t(M5_AT_CLKTCK, 100));
101 auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable()));
102 DPRINTF(Loader, "auxv at PHDR %08p\n", elfObject->programHeaderTable());
103 auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount()));
98 auxv.emplace_back(M5_AT_PAGESZ, AlphaISA::PageBytes);
99 auxv.emplace_back(M5_AT_CLKTCK, 100);
100 auxv.emplace_back(M5_AT_PHDR, elfObject->programHeaderTable());
101 DPRINTF(Loader, "auxv at PHDR %08p\n",
102 elfObject->programHeaderTable());
103 auxv.emplace_back(M5_AT_PHNUM, elfObject->programHeaderCount());
104 // This is the base address of the ELF interpreter; it should be
105 // zero for static executables or contain the base address for
106 // dynamic executables.
104 // This is the base address of the ELF interpreter; it should be
105 // zero for static executables or contain the base address for
106 // dynamic executables.
107 auxv.push_back(auxv_t(M5_AT_BASE, getBias()));
108 auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
109 auxv.push_back(auxv_t(M5_AT_UID, uid()));
110 auxv.push_back(auxv_t(M5_AT_EUID, euid()));
111 auxv.push_back(auxv_t(M5_AT_GID, gid()));
112 auxv.push_back(auxv_t(M5_AT_EGID, egid()));
107 auxv.emplace_back(M5_AT_BASE, getBias());
108 auxv.emplace_back(M5_AT_ENTRY, objFile->entryPoint());
109 auxv.emplace_back(M5_AT_UID, uid());
110 auxv.emplace_back(M5_AT_EUID, euid());
111 auxv.emplace_back(M5_AT_GID, gid());
112 auxv.emplace_back(M5_AT_EGID, egid());
113
114 }
115
116 // Calculate how much space we need for arg & env & auxv arrays.
117 int argv_array_size = intSize * (argv.size() + 1);
118 int envp_array_size = intSize * (envp.size() + 1);
119 int auxv_array_size = intSize * 2 * (auxv.size() + 1);
120

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163 panic("Unknown int size");
164
165 initVirtMem.writeBlob(memState->getStackMin(), (uint8_t*)&argc, intSize);
166
167 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
168 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
169
170 //Copy the aux stuff
113
114 }
115
116 // Calculate how much space we need for arg & env & auxv arrays.
117 int argv_array_size = intSize * (argv.size() + 1);
118 int envp_array_size = intSize * (envp.size() + 1);
119 int auxv_array_size = intSize * 2 * (auxv.size() + 1);
120

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163 panic("Unknown int size");
164
165 initVirtMem.writeBlob(memState->getStackMin(), (uint8_t*)&argc, intSize);
166
167 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
168 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
169
170 //Copy the aux stuff
171 for (vector<auxv_t>::size_type x = 0; x < auxv.size(); x++) {
172 initVirtMem.writeBlob(auxv_array_base + x * 2 * intSize,
173 (uint8_t*)&(auxv[x].getAuxType()), intSize);
174 initVirtMem.writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
175 (uint8_t*)&(auxv[x].getAuxVal()), intSize);
171 Addr auxv_array_end = auxv_array_base;
172 for (const auto &aux: auxv) {
173 initVirtMem.write(auxv_array_end, aux, GuestByteOrder);
174 auxv_array_end += sizeof(aux);
176 }
177
178 ThreadContext *tc = system->getThreadContext(contextIds[0]);
179
180 setSyscallArg(tc, 0, argc);
181 setSyscallArg(tc, 1, argv_array_base);
182 tc->setIntReg(StackPointerReg, memState->getStackMin());
183

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176
177 ThreadContext *tc = system->getThreadContext(contextIds[0]);
178
179 setSyscallArg(tc, 0, argc);
180 setSyscallArg(tc, 1, argv_array_base);
181 tc->setIntReg(StackPointerReg, memState->getStackMin());
182

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