2 * Copyright (c) 2003-2006 The Regents of The University of Michigan
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.
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.
33 * Copyright (c) 2007 The Hewlett-Packard Development Company
34 * All rights reserved.
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:
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.
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
55 * Palo Alto, California 94304
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.
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.
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"
102 using namespace X86ISA
;
104 M5_64_auxv_t::M5_64_auxv_t(int64_t type
, int64_t val
)
106 a_type
= TheISA::htog(type
);
107 a_val
= TheISA::htog(val
);
110 X86LiveProcess::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
)
119 brk_point
= objFile
->dataBase() + objFile
->dataSize() + objFile
->bssSize();
120 brk_point
= roundUp(brk_point
, VMPageSize
);
122 // Set pointer for next thread stack. Reserve 8M for main stack.
123 next_thread_stack_base
= stack_base
- (8 * 1024 * 1024);
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
)0x7FFFFFFFF000ULL
;
130 // Set up region for mmaps. This was determined empirically and may not
131 // always be correct.
132 mmap_start
= mmap_end
= 0x2aaaaaaab000;
135 void X86LiveProcess::handleTrap(int trapNum
, ThreadContext
*tc
)
140 panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum
);
145 X86LiveProcess::startup()
147 argsInit(sizeof(IntReg
), VMPageSize
);
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.
158 X86LiveProcess::argsInit(int intSize
, int pageSize
)
160 typedef M5_64_auxv_t auxv_t
;
169 //We want 16 byte alignment
172 // load object file into target memory
173 objFile
->loadSections(initVirtMem
);
176 X86_OnboardFPU
= 1 << 0,
177 X86_VirtualModeExtensions
= 1 << 1,
178 X86_DebuggingExtensions
= 1 << 2,
179 X86_PageSizeExtensions
= 1 << 3,
181 X86_TimeStampCounter
= 1 << 4,
182 X86_ModelSpecificRegisters
= 1 << 5,
183 X86_PhysicalAddressExtensions
= 1 << 6,
184 X86_MachineCheckExtensions
= 1 << 7,
186 X86_CMPXCHG8Instruction
= 1 << 8,
187 X86_OnboardAPIC
= 1 << 9,
188 X86_SYSENTER_SYSEXIT
= 1 << 11,
190 X86_MemoryTypeRangeRegisters
= 1 << 12,
191 X86_PageGlobalEnable
= 1 << 13,
192 X86_MachineCheckArchitecture
= 1 << 14,
193 X86_CMOVInstruction
= 1 << 15,
195 X86_PageAttributeTable
= 1 << 16,
196 X86_36BitPSEs
= 1 << 17,
197 X86_ProcessorSerialNumber
= 1 << 18,
198 X86_CLFLUSHInstruction
= 1 << 19,
200 X86_DebugTraceStore
= 1 << 21,
201 X86_ACPIViaMSR
= 1 << 22,
202 X86_MultimediaExtensions
= 1 << 23,
204 X86_FXSAVE_FXRSTOR
= 1 << 24,
205 X86_StreamingSIMDExtensions
= 1 << 25,
206 X86_StreamingSIMDExtensions2
= 1 << 26,
207 X86_CPUSelfSnoop
= 1 << 27,
209 X86_HyperThreading
= 1 << 28,
210 X86_AutomaticClockControl
= 1 << 29,
211 X86_IA64Processor
= 1 << 30
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
);
221 X86_VirtualModeExtensions
|
222 X86_DebuggingExtensions
|
223 X86_PageSizeExtensions
|
224 X86_TimeStampCounter
|
225 X86_ModelSpecificRegisters
|
226 X86_PhysicalAddressExtensions
|
227 X86_MachineCheckExtensions
|
228 X86_CMPXCHG8Instruction
|
230 X86_SYSENTER_SYSEXIT
|
231 X86_MemoryTypeRangeRegisters
|
232 X86_PageGlobalEnable
|
233 X86_MachineCheckArchitecture
|
234 X86_CMOVInstruction
|
235 X86_PageAttributeTable
|
237 // X86_ProcessorSerialNumber |
238 X86_CLFLUSHInstruction
|
239 // X86_DebugTraceStore |
241 X86_MultimediaExtensions
|
243 X86_StreamingSIMDExtensions
|
244 X86_StreamingSIMDExtensions2
|
245 // X86_CPUSelfSnoop |
246 // X86_HyperThreading |
247 // X86_AutomaticClockControl |
248 // X86_IA64Processor |
251 //Bits which describe the system hardware capabilities
252 //XXX Figure out what these should be
253 auxv
.push_back(auxv_t(M5_AT_HWCAP
, features
));
254 //The system page size
255 auxv
.push_back(auxv_t(M5_AT_PAGESZ
, X86ISA::VMPageSize
));
256 //Frequency at which times() increments
257 auxv
.push_back(auxv_t(M5_AT_CLKTCK
, 100));
258 // For statically linked executables, this is the virtual address of the
259 // program header tables if they appear in the executable image
260 auxv
.push_back(auxv_t(M5_AT_PHDR
, elfObject
->programHeaderTable()));
261 // This is the size of a program header entry from the elf file.
262 auxv
.push_back(auxv_t(M5_AT_PHENT
, elfObject
->programHeaderSize()));
263 // This is the number of program headers from the original elf file.
264 auxv
.push_back(auxv_t(M5_AT_PHNUM
, elfObject
->programHeaderCount()));
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.
269 auxv
.push_back(auxv_t(M5_AT_BASE
, 0));
271 //XXX Figure out what this should be.
272 auxv
.push_back(auxv_t(M5_AT_FLAGS
, 0));
273 //The entry point to the program
274 auxv
.push_back(auxv_t(M5_AT_ENTRY
, objFile
->entryPoint()));
275 //Different user and group IDs
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()));
280 //Whether to enable "secure mode" in the executable
281 auxv
.push_back(auxv_t(M5_AT_SECURE
, 0));
282 //The string "x86_64" with unknown meaning
283 auxv
.push_back(auxv_t(M5_AT_PLATFORM
, 0));
286 //Figure out how big the initial stack needs to be
288 // A sentry NULL void pointer at the top of the stack.
289 int sentry_size
= intSize
;
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.
293 int file_name_size
= filename
.size() + 1;
295 string platform
= "x86_64";
296 int aux_data_size
= platform
.size() + 1;
298 int env_data_size
= 0;
299 for (int i
= 0; i
< envp
.size(); ++i
) {
300 env_data_size
+= envp
[i
].size() + 1;
302 int arg_data_size
= 0;
303 for (int i
= 0; i
< argv
.size(); ++i
) {
304 arg_data_size
+= argv
[i
].size() + 1;
307 //The info_block needs to be padded so it's size is a multiple of the
308 //alignment mask. Also, it appears that there needs to be at least some
309 //padding, so if the size is already a multiple, we need to increase it
311 int base_info_block_size
=
312 sentry_size
+ file_name_size
+ env_data_size
+ arg_data_size
;
314 int info_block_size
= roundUp(base_info_block_size
, align
);
316 int info_block_padding
= info_block_size
- base_info_block_size
;
318 //Each auxilliary vector is two 8 byte words
319 int aux_array_size
= intSize
* 2 * (auxv
.size() + 1);
321 int envp_array_size
= intSize
* (envp
.size() + 1);
322 int argv_array_size
= intSize
* (argv
.size() + 1);
324 int argc_size
= intSize
;
326 //Figure out the size of the contents of the actual initial frame
333 //There needs to be padding after the auxiliary vector data so that the
334 //very bottom of the stack is aligned properly.
335 int partial_size
= frame_size
+ aux_data_size
;
336 warn("The partial size is %d.\n", partial_size
);
337 int aligned_partial_size
= roundUp(partial_size
, align
);
338 warn("The aligned partial size is %d.\n", aligned_partial_size
);
339 int aux_padding
= aligned_partial_size
- partial_size
;
340 warn("The padding is %d.\n", aux_padding
);
348 stack_min
= stack_base
- space_needed
;
349 stack_min
= roundDown(stack_min
, align
);
350 stack_size
= stack_base
- stack_min
;
353 pTable
->allocate(roundDown(stack_min
, pageSize
),
354 roundUp(stack_size
, pageSize
));
356 // map out initial stack contents
357 Addr sentry_base
= stack_base
- sentry_size
;
358 Addr file_name_base
= sentry_base
- file_name_size
;
359 Addr env_data_base
= file_name_base
- env_data_size
;
360 Addr arg_data_base
= env_data_base
- arg_data_size
;
361 Addr aux_data_base
= arg_data_base
- info_block_padding
- aux_data_size
;
362 Addr auxv_array_base
= aux_data_base
- aux_array_size
- aux_padding
;
363 Addr envp_array_base
= auxv_array_base
- envp_array_size
;
364 Addr argv_array_base
= envp_array_base
- argv_array_size
;
365 Addr argc_base
= argv_array_base
- argc_size
;
367 DPRINTF(X86
, "The addresses of items on the initial stack:\n");
368 DPRINTF(X86
, "0x%x - file name\n", file_name_base
);
369 DPRINTF(X86
, "0x%x - env data\n", env_data_base
);
370 DPRINTF(X86
, "0x%x - arg data\n", arg_data_base
);
371 DPRINTF(X86
, "0x%x - aux data\n", aux_data_base
);
372 DPRINTF(X86
, "0x%x - auxv array\n", auxv_array_base
);
373 DPRINTF(X86
, "0x%x - envp array\n", envp_array_base
);
374 DPRINTF(X86
, "0x%x - argv array\n", argv_array_base
);
375 DPRINTF(X86
, "0x%x - argc \n", argc_base
);
376 DPRINTF(X86
, "0x%x - stack min\n", stack_min
);
378 // write contents to stack
381 uint64_t argc
= argv
.size();
382 uint64_t guestArgc
= TheISA::htog(argc
);
384 //Write out the sentry void *
385 uint64_t sentry_NULL
= 0;
386 initVirtMem
->writeBlob(sentry_base
,
387 (uint8_t*)&sentry_NULL
, sentry_size
);
389 //Write the file name
390 initVirtMem
->writeString(file_name_base
, filename
.c_str());
392 //Fix up the aux vector which points to the "platform" string
393 assert(auxv
[auxv
.size() - 1].a_type
= M5_AT_PLATFORM
);
394 auxv
[auxv
.size() - 1].a_val
= aux_data_base
;
397 for(int x
= 0; x
< auxv
.size(); x
++)
399 initVirtMem
->writeBlob(auxv_array_base
+ x
* 2 * intSize
,
400 (uint8_t*)&(auxv
[x
].a_type
), intSize
);
401 initVirtMem
->writeBlob(auxv_array_base
+ (x
* 2 + 1) * intSize
,
402 (uint8_t*)&(auxv
[x
].a_val
), intSize
);
404 //Write out the terminating zeroed auxilliary vector
405 const uint64_t zero
= 0;
406 initVirtMem
->writeBlob(auxv_array_base
+ 2 * intSize
* auxv
.size(),
407 (uint8_t*)&zero
, 2 * intSize
);
409 initVirtMem
->writeString(aux_data_base
, platform
.c_str());
411 copyStringArray(envp
, envp_array_base
, env_data_base
, initVirtMem
);
412 copyStringArray(argv
, argv_array_base
, arg_data_base
, initVirtMem
);
414 initVirtMem
->writeBlob(argc_base
, (uint8_t*)&guestArgc
, intSize
);
416 //Set the stack pointer register
417 threadContexts
[0]->setIntReg(StackPointerReg
, stack_min
);
419 Addr prog_entry
= objFile
->entryPoint();
420 threadContexts
[0]->setPC(prog_entry
);
421 threadContexts
[0]->setNextPC(prog_entry
+ sizeof(MachInst
));
423 //Align the "stack_min" to a page boundary.
424 stack_min
= roundDown(stack_min
, pageSize
);