1/*
2 * Copyright (c) 2003-2006 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 * Ali Saidi
30 */
31
32/*
33 * Copyright (c) 2007 The Hewlett-Packard Development Company
34 * All rights reserved.
35 *
36 * Redistribution and use of this software in source and binary forms,
37 * with or without modification, are permitted provided that the
38 * following conditions are met:
39 *
40 * The software must be used only for Non-Commercial Use which means any
41 * use which is NOT directed to receiving any direct monetary
42 * compensation for, or commercial advantage from such use. Illustrative
43 * examples of non-commercial use are academic research, personal study,
44 * teaching, education and corporate research & development.
45 * Illustrative examples of commercial use are distributing products for
46 * commercial advantage and providing services using the software for
47 * commercial advantage.
48 *
49 * If you wish to use this software or functionality therein that may be
50 * covered by patents for commercial use, please contact:
51 * Director of Intellectual Property Licensing
52 * Office of Strategy and Technology
53 * Hewlett-Packard Company
54 * 1501 Page Mill Road
55 * Palo Alto, California 94304
56 *
57 * Redistributions of source code must retain the above copyright notice,
58 * this list of conditions and the following disclaimer. Redistributions
59 * in binary form must reproduce the above copyright notice, this list of
60 * conditions and the following disclaimer in the documentation and/or
61 * other materials provided with the distribution. Neither the name of
62 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
63 * contributors may be used to endorse or promote products derived from
64 * this software without specific prior written permission. No right of
65 * sublicense is granted herewith. Derivatives of the software and
66 * output created using the software may be prepared, but only for
67 * Non-Commercial Uses. Derivatives of the software may be shared with
68 * others provided: (i) the others agree to abide by the list of
69 * conditions herein which includes the Non-Commercial Use restrictions;
70 * and (ii) such Derivatives of the software include the above copyright
71 * notice to acknowledge the contribution from this software where
72 * applicable, this list of conditions and the disclaimer below.
73 *
74 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
75 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
76 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
77 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
78 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
79 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
80 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
81 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
82 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
83 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
84 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
85 *
86 * Authors: Gabe Black
87 */
88
89#include "arch/x86/isa_traits.hh"
90#include "arch/x86/process.hh"
91#include "arch/x86/types.hh"
92#include "base/loader/object_file.hh"
93#include "base/loader/elf_object.hh"
94#include "base/misc.hh"
95#include "cpu/thread_context.hh"
96#include "mem/page_table.hh"
97#include "mem/translating_port.hh"
98#include "sim/process_impl.hh"
99#include "sim/system.hh"
100
101using namespace std;
102using namespace X86ISA;
103
104M5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val)
105{
106 a_type = TheISA::htog(type);
107 a_val = TheISA::htog(val);
108}
109
110X86LiveProcess::X86LiveProcess(const std::string &nm, ObjectFile *objFile,
111 System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
112 std::vector<std::string> &argv, std::vector<std::string> &envp,
113 const std::string &cwd,
114 uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid,
115 uint64_t _pid, uint64_t _ppid)
116 : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
117 argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid)
118{
119 brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
120 brk_point = roundUp(brk_point, VMPageSize);
121
122 // Set pointer for next thread stack. Reserve 8M for main stack.
123 next_thread_stack_base = stack_base - (8 * 1024 * 1024);
124
125 // Set up stack. On X86_64 Linux, stack goes from the top of memory
126 // downward, less the hole for the kernel address space plus one page
127 // for undertermined purposes.
| 1/*
2 * Copyright (c) 2003-2006 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 * Ali Saidi
30 */
31
32/*
33 * Copyright (c) 2007 The Hewlett-Packard Development Company
34 * All rights reserved.
35 *
36 * Redistribution and use of this software in source and binary forms,
37 * with or without modification, are permitted provided that the
38 * following conditions are met:
39 *
40 * The software must be used only for Non-Commercial Use which means any
41 * use which is NOT directed to receiving any direct monetary
42 * compensation for, or commercial advantage from such use. Illustrative
43 * examples of non-commercial use are academic research, personal study,
44 * teaching, education and corporate research & development.
45 * Illustrative examples of commercial use are distributing products for
46 * commercial advantage and providing services using the software for
47 * commercial advantage.
48 *
49 * If you wish to use this software or functionality therein that may be
50 * covered by patents for commercial use, please contact:
51 * Director of Intellectual Property Licensing
52 * Office of Strategy and Technology
53 * Hewlett-Packard Company
54 * 1501 Page Mill Road
55 * Palo Alto, California 94304
56 *
57 * Redistributions of source code must retain the above copyright notice,
58 * this list of conditions and the following disclaimer. Redistributions
59 * in binary form must reproduce the above copyright notice, this list of
60 * conditions and the following disclaimer in the documentation and/or
61 * other materials provided with the distribution. Neither the name of
62 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
63 * contributors may be used to endorse or promote products derived from
64 * this software without specific prior written permission. No right of
65 * sublicense is granted herewith. Derivatives of the software and
66 * output created using the software may be prepared, but only for
67 * Non-Commercial Uses. Derivatives of the software may be shared with
68 * others provided: (i) the others agree to abide by the list of
69 * conditions herein which includes the Non-Commercial Use restrictions;
70 * and (ii) such Derivatives of the software include the above copyright
71 * notice to acknowledge the contribution from this software where
72 * applicable, this list of conditions and the disclaimer below.
73 *
74 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
75 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
76 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
77 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
78 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
79 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
80 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
81 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
82 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
83 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
84 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
85 *
86 * Authors: Gabe Black
87 */
88
89#include "arch/x86/isa_traits.hh"
90#include "arch/x86/process.hh"
91#include "arch/x86/types.hh"
92#include "base/loader/object_file.hh"
93#include "base/loader/elf_object.hh"
94#include "base/misc.hh"
95#include "cpu/thread_context.hh"
96#include "mem/page_table.hh"
97#include "mem/translating_port.hh"
98#include "sim/process_impl.hh"
99#include "sim/system.hh"
100
101using namespace std;
102using namespace X86ISA;
103
104M5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val)
105{
106 a_type = TheISA::htog(type);
107 a_val = TheISA::htog(val);
108}
109
110X86LiveProcess::X86LiveProcess(const std::string &nm, ObjectFile *objFile,
111 System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
112 std::vector<std::string> &argv, std::vector<std::string> &envp,
113 const std::string &cwd,
114 uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid,
115 uint64_t _pid, uint64_t _ppid)
116 : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
117 argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid)
118{
119 brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
120 brk_point = roundUp(brk_point, VMPageSize);
121
122 // Set pointer for next thread stack. Reserve 8M for main stack.
123 next_thread_stack_base = stack_base - (8 * 1024 * 1024);
124
125 // Set up stack. On X86_64 Linux, stack goes from the top of memory
126 // downward, less the hole for the kernel address space plus one page
127 // for undertermined purposes.
|
128 stack_base = (Addr)0x7FFFFFFF000ULL;
| 128 stack_base = (Addr)0x7FFFFFFFF000ULL;
|
129
130 // Set up region for mmaps. Tru64 seems to start just above 0 and
131 // grow up from there.
132 mmap_start = mmap_end = 0xfffff80000000000ULL;
133}
134
135void X86LiveProcess::handleTrap(int trapNum, ThreadContext *tc)
136{
137 switch(trapNum)
138 {
139 default:
140 panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum);
141 }
142}
143
144void
145X86LiveProcess::startup()
146{
147 argsInit(sizeof(IntReg), VMPageSize);
148
149 //The AMD64 abi says that only rsp and rdx are defined at process
150 //startup. rsp will be set by argsInit, and I don't understand what
151 //rdx should be set to. The other floating point and integer registers
152 //will be zeroed by the register file constructors, but control registers
153 //should be initialized here. Since none of those are implemented, there
154 //isn't anything here.
155}
156
157void
158X86LiveProcess::argsInit(int intSize, int pageSize)
159{
160 typedef M5_64_auxv_t auxv_t;
161 Process::startup();
162
163 string filename;
164 if(argv.size() < 1)
165 filename = "";
166 else
167 filename = argv[0];
168
| 129
130 // Set up region for mmaps. Tru64 seems to start just above 0 and
131 // grow up from there.
132 mmap_start = mmap_end = 0xfffff80000000000ULL;
133}
134
135void X86LiveProcess::handleTrap(int trapNum, ThreadContext *tc)
136{
137 switch(trapNum)
138 {
139 default:
140 panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum);
141 }
142}
143
144void
145X86LiveProcess::startup()
146{
147 argsInit(sizeof(IntReg), VMPageSize);
148
149 //The AMD64 abi says that only rsp and rdx are defined at process
150 //startup. rsp will be set by argsInit, and I don't understand what
151 //rdx should be set to. The other floating point and integer registers
152 //will be zeroed by the register file constructors, but control registers
153 //should be initialized here. Since none of those are implemented, there
154 //isn't anything here.
155}
156
157void
158X86LiveProcess::argsInit(int intSize, int pageSize)
159{
160 typedef M5_64_auxv_t auxv_t;
161 Process::startup();
162
163 string filename;
164 if(argv.size() < 1)
165 filename = "";
166 else
167 filename = argv[0];
168
|
169 Addr alignmentMask = ~(intSize - 1);
| 169 //We want 16 byte alignment
170 Addr alignmentMask = ~mask(4);
|
170
171 // load object file into target memory
172 objFile->loadSections(initVirtMem);
173
| 171
172 // load object file into target memory
173 objFile->loadSections(initVirtMem);
174
|
174 //These are the auxilliary vector types
175 enum auxTypes
176 {
177 X86_AT_NULL = 0,
178 X86_AT_IGNORE = 1,
179 X86_AT_EXECFD = 2,
180 X86_AT_PHDR = 3,
181 X86_AT_PHENT = 4,
182 X86_AT_PHNUM = 5,
183 X86_AT_PAGESZ = 6,
184 X86_AT_BASE = 7,
185 X86_AT_FLAGS = 8,
186 X86_AT_ENTRY = 9,
187 X86_AT_NOTELF = 10,
188 X86_AT_UID = 11,
189 X86_AT_EUID = 12,
190 X86_AT_GID = 13,
191 X86_AT_EGID = 14,
192 X86_AT_PLATFORM = 15,
193 X86_AT_HWCAP = 16,
194 X86_AT_CLKTCK = 17,
| 175 enum X86CpuFeature {
176 X86_OnboardFPU = 1 << 0,
177 X86_VirtualModeExtensions = 1 << 1,
178 X86_DebuggingExtensions = 1 << 2,
179 X86_PageSizeExtensions = 1 << 3,
|
195
| 180
|
196 X86_AT_SECURE = 13,
| 181 X86_TimeStampCounter = 1 << 4,
182 X86_ModelSpecificRegisters = 1 << 5,
183 X86_PhysicalAddressExtensions = 1 << 6,
184 X86_MachineCheckExtensions = 1 << 7,
|
197
| 185
|
198 X86_AT_VECTOR_SIZE = 44
| 186 X86_CMPXCHG8Instruction = 1 << 8,
187 X86_OnboardAPIC = 1 << 9,
188 X86_SYSENTER_SYSEXIT = 1 << 11,
189
190 X86_MemoryTypeRangeRegisters = 1 << 12,
191 X86_PageGlobalEnable = 1 << 13,
192 X86_MachineCheckArchitecture = 1 << 14,
193 X86_CMOVInstruction = 1 << 15,
194
195 X86_PageAttributeTable = 1 << 16,
196 X86_36BitPSEs = 1 << 17,
197 X86_ProcessorSerialNumber = 1 << 18,
198 X86_CLFLUSHInstruction = 1 << 19,
199
200 X86_DebugTraceStore = 1 << 21,
201 X86_ACPIViaMSR = 1 << 22,
202 X86_MultimediaExtensions = 1 << 23,
203
204 X86_FXSAVE_FXRSTOR = 1 << 24,
205 X86_StreamingSIMDExtensions = 1 << 25,
206 X86_StreamingSIMDExtensions2 = 1 << 26,
207 X86_CPUSelfSnoop = 1 << 27,
208
209 X86_HyperThreading = 1 << 28,
210 X86_AutomaticClockControl = 1 << 29,
211 X86_IA64Processor = 1 << 30
|
199 };
200
201 //Setup the auxilliary vectors. These will already have endian conversion.
202 //Auxilliary vectors are loaded only for elf formatted executables.
203 ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
204 if(elfObject)
205 {
| 212 };
213
214 //Setup the auxilliary vectors. These will already have endian conversion.
215 //Auxilliary vectors are loaded only for elf formatted executables.
216 ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
217 if(elfObject)
218 {
|
| 219 uint64_t features =
220 X86_OnboardFPU |
221 X86_VirtualModeExtensions |
222 X86_DebuggingExtensions |
223 X86_PageSizeExtensions |
224 X86_TimeStampCounter |
225 X86_ModelSpecificRegisters |
226 X86_PhysicalAddressExtensions |
227 X86_MachineCheckExtensions |
228 X86_CMPXCHG8Instruction |
229 X86_OnboardAPIC |
230 X86_SYSENTER_SYSEXIT |
231 X86_MemoryTypeRangeRegisters |
232 X86_PageGlobalEnable |
233 X86_MachineCheckArchitecture |
234 X86_CMOVInstruction |
235 X86_PageAttributeTable |
236 X86_36BitPSEs |
237// X86_ProcessorSerialNumber |
238 X86_CLFLUSHInstruction |
239// X86_DebugTraceStore |
240// X86_ACPIViaMSR |
241 X86_MultimediaExtensions |
242 X86_FXSAVE_FXRSTOR |
243 X86_StreamingSIMDExtensions |
244 X86_StreamingSIMDExtensions2 |
245// X86_CPUSelfSnoop |
246// X86_HyperThreading |
247// X86_AutomaticClockControl |
248// X86_IA64Processor |
249 0;
250
|
206 //Bits which describe the system hardware capabilities
207 //XXX Figure out what these should be
| 251 //Bits which describe the system hardware capabilities
252 //XXX Figure out what these should be
|
208 auxv.push_back(auxv_t(X86_AT_HWCAP, 0));
| 253 auxv.push_back(auxv_t(M5_AT_HWCAP, features));
|
209 //The system page size
| 254 //The system page size
|
210 auxv.push_back(auxv_t(X86_AT_PAGESZ, X86ISA::VMPageSize));
| 255 auxv.push_back(auxv_t(M5_AT_PAGESZ, X86ISA::VMPageSize));
|
211 //Frequency at which times() increments
| 256 //Frequency at which times() increments
|
212 auxv.push_back(auxv_t(X86_AT_CLKTCK, 100));
| 257 auxv.push_back(auxv_t(M5_AT_CLKTCK, 100));
|
213 // For statically linked executables, this is the virtual address of the
214 // program header tables if they appear in the executable image
| 258 // For statically linked executables, this is the virtual address of the
259 // program header tables if they appear in the executable image
|
215 auxv.push_back(auxv_t(X86_AT_PHDR, elfObject->programHeaderTable()));
| 260 auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable()));
|
216 // This is the size of a program header entry from the elf file.
| 261 // This is the size of a program header entry from the elf file.
|
217 auxv.push_back(auxv_t(X86_AT_PHENT, elfObject->programHeaderSize()));
| 262 auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize()));
|
218 // This is the number of program headers from the original elf file.
| 263 // This is the number of program headers from the original elf file.
|
219 auxv.push_back(auxv_t(X86_AT_PHNUM, elfObject->programHeaderCount()));
| 264 auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount()));
|
220 //Defined to be 100 in the kernel source.
221 //This is the address of the elf "interpreter", It should be set
222 //to 0 for regular executables. It should be something else
223 //(not sure what) for dynamic libraries.
| 265 //Defined to be 100 in the kernel source.
266 //This is the address of the elf "interpreter", It should be set
267 //to 0 for regular executables. It should be something else
268 //(not sure what) for dynamic libraries.
|
224 auxv.push_back(auxv_t(X86_AT_BASE, 0));
| 269 auxv.push_back(auxv_t(M5_AT_BASE, 0));
|
225
226 //XXX Figure out what this should be.
| 270
271 //XXX Figure out what this should be.
|
227 auxv.push_back(auxv_t(X86_AT_FLAGS, 0));
| 272 auxv.push_back(auxv_t(M5_AT_FLAGS, 0));
|
228 //The entry point to the program
| 273 //The entry point to the program
|
229 auxv.push_back(auxv_t(X86_AT_ENTRY, objFile->entryPoint()));
| 274 auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
|
230 //Different user and group IDs
| 275 //Different user and group IDs
|
231 auxv.push_back(auxv_t(X86_AT_UID, uid()));
232 auxv.push_back(auxv_t(X86_AT_EUID, euid()));
233 auxv.push_back(auxv_t(X86_AT_GID, gid()));
234 auxv.push_back(auxv_t(X86_AT_EGID, egid()));
| 276 auxv.push_back(auxv_t(M5_AT_UID, uid()));
277 auxv.push_back(auxv_t(M5_AT_EUID, euid()));
278 auxv.push_back(auxv_t(M5_AT_GID, gid()));
279 auxv.push_back(auxv_t(M5_AT_EGID, egid()));
|
235 //Whether to enable "secure mode" in the executable
| 280 //Whether to enable "secure mode" in the executable
|
236 auxv.push_back(auxv_t(X86_AT_SECURE, 0));
| 281 auxv.push_back(auxv_t(M5_AT_SECURE, 0));
|
237 //The string "x86_64" with unknown meaning
| 282 //The string "x86_64" with unknown meaning
|
238 auxv.push_back(auxv_t(X86_AT_PLATFORM, 0));
| 283 auxv.push_back(auxv_t(M5_AT_PLATFORM, 0));
|
239 }
240
241 //Figure out how big the initial stack needs to be
242
243 // The unaccounted for 0 at the top of the stack
244 int mysterious_size = intSize;
245
246 //This is the name of the file which is present on the initial stack
247 //It's purpose is to let the user space linker examine the original file.
| 284 }
285
286 //Figure out how big the initial stack needs to be
287
288 // The unaccounted for 0 at the top of the stack
289 int mysterious_size = intSize;
290
291 //This is the name of the file which is present on the initial stack
292 //It's purpose is to let the user space linker examine the original file.
|
248 int file_name_size = filename.size() + 1;
| 293 int file_name_size = filename.size();
|
249
| 294
|
| 295 string platform = "x86_64";
296 int aux_data_size = platform.size() + 1;
297
|
250 int env_data_size = 0;
251 for (int i = 0; i < envp.size(); ++i) {
| 298 int env_data_size = 0;
299 for (int i = 0; i < envp.size(); ++i) {
|
252 env_data_size += envp[i].size() + 1;
| 300 env_data_size += envp[i].size();
|
253 }
254 int arg_data_size = 0;
255 for (int i = 0; i < argv.size(); ++i) {
| 301 }
302 int arg_data_size = 0;
303 for (int i = 0; i < argv.size(); ++i) {
|
256 arg_data_size += argv[i].size() + 1;
| 304 arg_data_size += argv[i].size();
|
257 }
258
| 305 }
306
|
| 307 //The auxiliary vector data needs to be padded so it's size is a multiple
308 //of the alignment mask.
309 int aux_padding =
310 ((aux_data_size + ~alignmentMask) & alignmentMask) - aux_data_size;
311
|
259 //The info_block needs to be padded so it's size is a multiple of the
260 //alignment mask. Also, it appears that there needs to be at least some
261 //padding, so if the size is already a multiple, we need to increase it
262 //anyway.
263 int info_block_size =
| 312 //The info_block needs to be padded so it's size is a multiple of the
313 //alignment mask. Also, it appears that there needs to be at least some
314 //padding, so if the size is already a multiple, we need to increase it
315 //anyway.
316 int info_block_size =
|
264 (file_name_size +
| 317 (mysterious_size +
318 file_name_size +
|
265 env_data_size +
266 arg_data_size +
| 319 env_data_size +
320 arg_data_size +
|
267 intSize) & alignmentMask;
| 321 ~alignmentMask) & alignmentMask;
|
268
269 int info_block_padding =
270 info_block_size -
| 322
323 int info_block_padding =
324 info_block_size -
|
| 325 mysterious_size -
|
271 file_name_size -
272 env_data_size -
273 arg_data_size;
274
275 //Each auxilliary vector is two 8 byte words
276 int aux_array_size = intSize * 2 * (auxv.size() + 1);
277
278 int envp_array_size = intSize * (envp.size() + 1);
279 int argv_array_size = intSize * (argv.size() + 1);
280
281 int argc_size = intSize;
282
283 int space_needed =
| 326 file_name_size -
327 env_data_size -
328 arg_data_size;
329
330 //Each auxilliary vector is two 8 byte words
331 int aux_array_size = intSize * 2 * (auxv.size() + 1);
332
333 int envp_array_size = intSize * (envp.size() + 1);
334 int argv_array_size = intSize * (argv.size() + 1);
335
336 int argc_size = intSize;
337
338 int space_needed =
|
284 mysterious_size +
| |
285 info_block_size +
| 339 info_block_size +
|
| 340 aux_data_size +
341 aux_padding +
|
286 aux_array_size +
287 envp_array_size +
288 argv_array_size +
289 argc_size;
290
291 stack_min = stack_base - space_needed;
292 stack_min &= alignmentMask;
293 stack_size = stack_base - stack_min;
294
295 // map memory
296 pTable->allocate(roundDown(stack_min, pageSize),
297 roundUp(stack_size, pageSize));
298
299 // map out initial stack contents
300 Addr mysterious_base = stack_base - mysterious_size;
301 Addr file_name_base = mysterious_base - file_name_size;
302 Addr env_data_base = file_name_base - env_data_size;
303 Addr arg_data_base = env_data_base - arg_data_size;
| 342 aux_array_size +
343 envp_array_size +
344 argv_array_size +
345 argc_size;
346
347 stack_min = stack_base - space_needed;
348 stack_min &= alignmentMask;
349 stack_size = stack_base - stack_min;
350
351 // map memory
352 pTable->allocate(roundDown(stack_min, pageSize),
353 roundUp(stack_size, pageSize));
354
355 // map out initial stack contents
356 Addr mysterious_base = stack_base - mysterious_size;
357 Addr file_name_base = mysterious_base - file_name_size;
358 Addr env_data_base = file_name_base - env_data_size;
359 Addr arg_data_base = env_data_base - arg_data_size;
|
304 Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding;
| 360 Addr aux_data_base = arg_data_base - aux_data_size - info_block_padding;
361 Addr auxv_array_base = aux_data_base - aux_array_size - aux_padding;
|
305 Addr envp_array_base = auxv_array_base - envp_array_size;
306 Addr argv_array_base = envp_array_base - argv_array_size;
307 Addr argc_base = argv_array_base - argc_size;
308
309 DPRINTF(X86, "The addresses of items on the initial stack:\n");
310 DPRINTF(X86, "0x%x - file name\n", file_name_base);
311 DPRINTF(X86, "0x%x - env data\n", env_data_base);
312 DPRINTF(X86, "0x%x - arg data\n", arg_data_base);
| 362 Addr envp_array_base = auxv_array_base - envp_array_size;
363 Addr argv_array_base = envp_array_base - argv_array_size;
364 Addr argc_base = argv_array_base - argc_size;
365
366 DPRINTF(X86, "The addresses of items on the initial stack:\n");
367 DPRINTF(X86, "0x%x - file name\n", file_name_base);
368 DPRINTF(X86, "0x%x - env data\n", env_data_base);
369 DPRINTF(X86, "0x%x - arg data\n", arg_data_base);
|
| 370 DPRINTF(X86, "0x%x - aux data\n", aux_data_base);
|
313 DPRINTF(X86, "0x%x - auxv array\n", auxv_array_base);
314 DPRINTF(X86, "0x%x - envp array\n", envp_array_base);
315 DPRINTF(X86, "0x%x - argv array\n", argv_array_base);
316 DPRINTF(X86, "0x%x - argc \n", argc_base);
317 DPRINTF(X86, "0x%x - stack min\n", stack_min);
318
319 // write contents to stack
320
321 // figure out argc
322 uint64_t argc = argv.size();
323 uint64_t guestArgc = TheISA::htog(argc);
324
325 //Write out the mysterious 0
326 uint64_t mysterious_zero = 0;
327 initVirtMem->writeBlob(mysterious_base,
328 (uint8_t*)&mysterious_zero, mysterious_size);
329
330 //Write the file name
331 initVirtMem->writeString(file_name_base, filename.c_str());
332
| 371 DPRINTF(X86, "0x%x - auxv array\n", auxv_array_base);
372 DPRINTF(X86, "0x%x - envp array\n", envp_array_base);
373 DPRINTF(X86, "0x%x - argv array\n", argv_array_base);
374 DPRINTF(X86, "0x%x - argc \n", argc_base);
375 DPRINTF(X86, "0x%x - stack min\n", stack_min);
376
377 // write contents to stack
378
379 // figure out argc
380 uint64_t argc = argv.size();
381 uint64_t guestArgc = TheISA::htog(argc);
382
383 //Write out the mysterious 0
384 uint64_t mysterious_zero = 0;
385 initVirtMem->writeBlob(mysterious_base,
386 (uint8_t*)&mysterious_zero, mysterious_size);
387
388 //Write the file name
389 initVirtMem->writeString(file_name_base, filename.c_str());
390
|
| 391 //Fix up the aux vector which points to the "platform" string
392 assert(auxv[auxv.size() - 1].a_type = M5_AT_PLATFORM);
393 auxv[auxv.size() - 1].a_val = aux_data_base;
394
|
333 //Copy the aux stuff
334 for(int x = 0; x < auxv.size(); x++)
335 {
336 initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
337 (uint8_t*)&(auxv[x].a_type), intSize);
338 initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
339 (uint8_t*)&(auxv[x].a_val), intSize);
340 }
341 //Write out the terminating zeroed auxilliary vector
342 const uint64_t zero = 0;
343 initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(),
344 (uint8_t*)&zero, 2 * intSize);
345
| 395 //Copy the aux stuff
396 for(int x = 0; x < auxv.size(); x++)
397 {
398 initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
399 (uint8_t*)&(auxv[x].a_type), intSize);
400 initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
401 (uint8_t*)&(auxv[x].a_val), intSize);
402 }
403 //Write out the terminating zeroed auxilliary vector
404 const uint64_t zero = 0;
405 initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(),
406 (uint8_t*)&zero, 2 * intSize);
407
|
| 408 initVirtMem->writeString(aux_data_base, platform.c_str());
409
|
346 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
347 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
348
349 initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
350
351 //Set up the thread context to start running the process
| 410 copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
411 copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
412
413 initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
414
415 //Set up the thread context to start running the process
|
| 416 //Because of the peculiarities of how syscall works, I believe
417 //a process starts with r11 containing the value of eflags or maybe r11
418 //from before the call to execve. Empirically this value is 0x200.
419 threadContexts[0]->setIntReg(INTREG_R11, 0x200);
420 //Set the stack pointer register
|
352 threadContexts[0]->setIntReg(StackPointerReg, stack_min);
353
354 Addr prog_entry = objFile->entryPoint();
355 threadContexts[0]->setPC(prog_entry);
356 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
357
358 //Align the "stack_min" to a page boundary.
359 stack_min = roundDown(stack_min, pageSize);
360
361// num_processes++;
362}
| 421 threadContexts[0]->setIntReg(StackPointerReg, stack_min);
422
423 Addr prog_entry = objFile->entryPoint();
424 threadContexts[0]->setPC(prog_entry);
425 threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
426
427 //Align the "stack_min" to a page boundary.
428 stack_min = roundDown(stack_min, pageSize);
429
430// num_processes++;
431}
|