2 * Copyright (c) 2003-2004 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
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include "arch/sparc/asi.hh"
33 #include "arch/sparc/handlers.hh"
34 #include "arch/sparc/isa_traits.hh"
35 #include "arch/sparc/process.hh"
36 #include "arch/sparc/types.hh"
37 #include "base/loader/object_file.hh"
38 #include "base/loader/elf_object.hh"
39 #include "base/misc.hh"
40 #include "cpu/thread_context.hh"
41 #include "mem/page_table.hh"
42 #include "sim/process_impl.hh"
43 #include "mem/translating_port.hh"
44 #include "sim/system.hh"
47 using namespace SparcISA
;
50 SparcLiveProcess::SparcLiveProcess(const std::string
&nm
, ObjectFile
*objFile
,
51 System
*_system
, int stdin_fd
, int stdout_fd
, int stderr_fd
,
52 std::vector
<std::string
> &argv
, std::vector
<std::string
> &envp
,
53 const std::string
&cwd
,
54 uint64_t _uid
, uint64_t _euid
, uint64_t _gid
, uint64_t _egid
,
55 uint64_t _pid
, uint64_t _ppid
)
56 : LiveProcess(nm
, objFile
, _system
, stdin_fd
, stdout_fd
, stderr_fd
,
57 argv
, envp
, cwd
, _uid
, _euid
, _gid
, _egid
, _pid
, _ppid
)
60 // XXX all the below need to be updated for SPARC - Ali
61 brk_point
= objFile
->dataBase() + objFile
->dataSize() + objFile
->bssSize();
62 brk_point
= roundUp(brk_point
, VMPageSize
);
64 // Set pointer for next thread stack. Reserve 8M for main stack.
65 next_thread_stack_base
= stack_base
- (8 * 1024 * 1024);
67 //Initialize these to 0s
72 void SparcLiveProcess::handleTrap(int trapNum
, ThreadContext
*tc
)
76 case 0x03: //Flush window trap
77 warn("Ignoring request to flush register windows.\n");
80 panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum
);
85 Sparc32LiveProcess::startup()
87 argsInit(32 / 8, VMPageSize
);
91 //The process runs in user mode with 32 bit addresses
92 threadContexts
[0]->setMiscReg(MISCREG_PSTATE
, 0x0a);
94 //Setup default FP state
95 threadContexts
[0]->setMiscRegNoEffect(MISCREG_FSR
, 0);
97 threadContexts
[0]->setMiscRegNoEffect(MISCREG_TICK
, 0);
100 * Register window management registers
103 //No windows contain info from other programs
104 //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
105 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 6, 0);
106 //There are no windows to pop
107 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
108 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 4, 0);
109 //All windows are available to save into
110 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
111 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 3, NWindows
- 2);
112 //All windows are "clean"
113 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
114 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 5, NWindows
);
115 //Start with register window 0
116 threadContexts
[0]->setMiscRegNoEffect(MISCREG_CWP
, 0);
117 //Always use spill and fill traps 0
118 //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
119 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 7, 0);
120 //Set the trap level to 0
121 threadContexts
[0]->setMiscRegNoEffect(MISCREG_TL
, 0);
122 //Set the ASI register to something fixed
123 threadContexts
[0]->setMiscRegNoEffect(MISCREG_ASI
, ASI_PRIMARY
);
126 * T1 specific registers
128 //Turn on the icache, dcache, dtb translation, and itb translation.
129 threadContexts
[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL
, 15);
133 Sparc64LiveProcess::startup()
135 argsInit(sizeof(IntReg
), VMPageSize
);
139 //The process runs in user mode
140 threadContexts
[0]->setMiscReg(MISCREG_PSTATE
, 0x02);
142 //Setup default FP state
143 threadContexts
[0]->setMiscRegNoEffect(MISCREG_FSR
, 0);
145 threadContexts
[0]->setMiscRegNoEffect(MISCREG_TICK
, 0);
148 * Register window management registers
151 //No windows contain info from other programs
152 //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
153 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 6, 0);
154 //There are no windows to pop
155 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
156 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 4, 0);
157 //All windows are available to save into
158 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
159 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 3, NWindows
- 2);
160 //All windows are "clean"
161 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
162 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 5, NWindows
);
163 //Start with register window 0
164 threadContexts
[0]->setMiscRegNoEffect(MISCREG_CWP
, 0);
165 //Always use spill and fill traps 0
166 //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
167 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 7, 0);
168 //Set the trap level to 0
169 threadContexts
[0]->setMiscRegNoEffect(MISCREG_TL
, 0);
170 //Set the ASI register to something fixed
171 threadContexts
[0]->setMiscRegNoEffect(MISCREG_ASI
, ASI_PRIMARY
);
174 * T1 specific registers
176 //Turn on the icache, dcache, dtb translation, and itb translation.
177 threadContexts
[0]->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL
, 15);
180 M5_32_auxv_t::M5_32_auxv_t(int32_t type
, int32_t val
)
182 a_type
= TheISA::htog(type
);
183 a_val
= TheISA::htog(val
);
186 M5_64_auxv_t::M5_64_auxv_t(int64_t type
, int64_t val
)
188 a_type
= TheISA::htog(type
);
189 a_val
= TheISA::htog(val
);
193 Sparc64LiveProcess::argsInit(int intSize
, int pageSize
)
195 typedef M5_64_auxv_t auxv_t
;
204 Addr alignmentMask
= ~(intSize
- 1);
206 // load object file into target memory
207 objFile
->loadSections(initVirtMem
);
211 M5_HWCAP_SPARC_FLUSH
= 1,
212 M5_HWCAP_SPARC_STBAR
= 2,
213 M5_HWCAP_SPARC_SWAP
= 4,
214 M5_HWCAP_SPARC_MULDIV
= 8,
215 M5_HWCAP_SPARC_V9
= 16,
216 //This one should technically only be set
217 //if there is a cheetah or cheetah_plus tlb,
218 //but we'll use it all the time
219 M5_HWCAP_SPARC_ULTRA3
= 32
222 const int64_t hwcap
=
223 M5_HWCAP_SPARC_FLUSH
|
224 M5_HWCAP_SPARC_STBAR
|
225 M5_HWCAP_SPARC_SWAP
|
226 M5_HWCAP_SPARC_MULDIV
|
228 M5_HWCAP_SPARC_ULTRA3
;
231 //Setup the auxilliary vectors. These will already have endian conversion.
232 //Auxilliary vectors are loaded only for elf formatted executables.
233 ElfObject
* elfObject
= dynamic_cast<ElfObject
*>(objFile
);
236 //Bits which describe the system hardware capabilities
237 auxv
.push_back(auxv_t(M5_AT_HWCAP
, hwcap
));
238 //The system page size
239 auxv
.push_back(auxv_t(M5_AT_PAGESZ
, SparcISA::VMPageSize
));
240 //Defined to be 100 in the kernel source.
241 //Frequency at which times() increments
242 auxv
.push_back(auxv_t(M5_AT_CLKTCK
, 100));
243 // For statically linked executables, this is the virtual address of the
244 // program header tables if they appear in the executable image
245 auxv
.push_back(auxv_t(M5_AT_PHDR
, elfObject
->programHeaderTable()));
246 // This is the size of a program header entry from the elf file.
247 auxv
.push_back(auxv_t(M5_AT_PHENT
, elfObject
->programHeaderSize()));
248 // This is the number of program headers from the original elf file.
249 auxv
.push_back(auxv_t(M5_AT_PHNUM
, elfObject
->programHeaderCount()));
250 //This is the address of the elf "interpreter", It should be set
251 //to 0 for regular executables. It should be something else
252 //(not sure what) for dynamic libraries.
253 auxv
.push_back(auxv_t(M5_AT_BASE
, 0));
254 //This is hardwired to 0 in the elf loading code in the kernel
255 auxv
.push_back(auxv_t(M5_AT_FLAGS
, 0));
256 //The entry point to the program
257 auxv
.push_back(auxv_t(M5_AT_ENTRY
, objFile
->entryPoint()));
258 //Different user and group IDs
259 auxv
.push_back(auxv_t(M5_AT_UID
, uid()));
260 auxv
.push_back(auxv_t(M5_AT_EUID
, euid()));
261 auxv
.push_back(auxv_t(M5_AT_GID
, gid()));
262 auxv
.push_back(auxv_t(M5_AT_EGID
, egid()));
263 //Whether to enable "secure mode" in the executable
264 auxv
.push_back(auxv_t(M5_AT_SECURE
, 0));
267 //Figure out how big the initial stack needs to be
269 // The unaccounted for 0 at the top of the stack
270 int mysterious_size
= intSize
;
272 //This is the name of the file which is present on the initial stack
273 //It's purpose is to let the user space linker examine the original file.
274 int file_name_size
= filename
.size() + 1;
276 int env_data_size
= 0;
277 for (int i
= 0; i
< envp
.size(); ++i
) {
278 env_data_size
+= envp
[i
].size() + 1;
280 int arg_data_size
= 0;
281 for (int i
= 0; i
< argv
.size(); ++i
) {
282 arg_data_size
+= argv
[i
].size() + 1;
285 //The info_block needs to be padded so it's size is a multiple of the
286 //alignment mask. Also, it appears that there needs to be at least some
287 //padding, so if the size is already a multiple, we need to increase it
289 int info_block_size
=
293 intSize
) & alignmentMask
;
295 int info_block_padding
=
301 //Each auxilliary vector is two 8 byte words
302 int aux_array_size
= intSize
* 2 * (auxv
.size() + 1);
304 int envp_array_size
= intSize
* (envp
.size() + 1);
305 int argv_array_size
= intSize
* (argv
.size() + 1);
307 int argc_size
= intSize
;
308 int window_save_size
= intSize
* 16;
319 stack_min
= stack_base
- space_needed
;
320 stack_min
&= alignmentMask
;
321 stack_size
= stack_base
- stack_min
;
324 pTable
->allocate(roundDown(stack_min
, pageSize
),
325 roundUp(stack_size
, pageSize
));
327 // map out initial stack contents
328 Addr mysterious_base
= stack_base
- mysterious_size
;
329 Addr file_name_base
= mysterious_base
- file_name_size
;
330 Addr env_data_base
= file_name_base
- env_data_size
;
331 Addr arg_data_base
= env_data_base
- arg_data_size
;
332 Addr auxv_array_base
= arg_data_base
- aux_array_size
- info_block_padding
;
333 Addr envp_array_base
= auxv_array_base
- envp_array_size
;
334 Addr argv_array_base
= envp_array_base
- argv_array_size
;
335 Addr argc_base
= argv_array_base
- argc_size
;
337 // only used in DPRINTF
338 Addr window_save_base
= argc_base
- window_save_size
;
341 DPRINTF(Sparc
, "The addresses of items on the initial stack:\n");
342 DPRINTF(Sparc
, "0x%x - file name\n", file_name_base
);
343 DPRINTF(Sparc
, "0x%x - env data\n", env_data_base
);
344 DPRINTF(Sparc
, "0x%x - arg data\n", arg_data_base
);
345 DPRINTF(Sparc
, "0x%x - auxv array\n", auxv_array_base
);
346 DPRINTF(Sparc
, "0x%x - envp array\n", envp_array_base
);
347 DPRINTF(Sparc
, "0x%x - argv array\n", argv_array_base
);
348 DPRINTF(Sparc
, "0x%x - argc \n", argc_base
);
349 DPRINTF(Sparc
, "0x%x - window save\n", window_save_base
);
350 DPRINTF(Sparc
, "0x%x - stack min\n", stack_min
);
352 // write contents to stack
355 uint64_t argc
= argv
.size();
356 uint64_t guestArgc
= TheISA::htog(argc
);
358 //Write out the mysterious 0
359 uint64_t mysterious_zero
= 0;
360 initVirtMem
->writeBlob(mysterious_base
,
361 (uint8_t*)&mysterious_zero
, mysterious_size
);
363 //Write the file name
364 initVirtMem
->writeString(file_name_base
, filename
.c_str());
367 for(int x
= 0; x
< auxv
.size(); x
++)
369 initVirtMem
->writeBlob(auxv_array_base
+ x
* 2 * intSize
,
370 (uint8_t*)&(auxv
[x
].a_type
), intSize
);
371 initVirtMem
->writeBlob(auxv_array_base
+ (x
* 2 + 1) * intSize
,
372 (uint8_t*)&(auxv
[x
].a_val
), intSize
);
374 //Write out the terminating zeroed auxilliary vector
375 const uint64_t zero
= 0;
376 initVirtMem
->writeBlob(auxv_array_base
+ 2 * intSize
* auxv
.size(),
377 (uint8_t*)&zero
, 2 * intSize
);
379 copyStringArray(envp
, envp_array_base
, env_data_base
, initVirtMem
);
380 copyStringArray(argv
, argv_array_base
, arg_data_base
, initVirtMem
);
382 initVirtMem
->writeBlob(argc_base
, (uint8_t*)&guestArgc
, intSize
);
384 //Stuff the trap handlers into the processes address space.
385 //Since the stack grows down and is the highest area in the processes
386 //address space, we can put stuff above it and stay out of the way.
387 int fillSize
= sizeof(MachInst
) * numFillInsts
;
388 int spillSize
= sizeof(MachInst
) * numSpillInsts
;
389 fillStart
= stack_base
;
390 spillStart
= fillStart
+ fillSize
;
391 initVirtMem
->writeBlob(fillStart
, (uint8_t*)fillHandler64
, fillSize
);
392 initVirtMem
->writeBlob(spillStart
, (uint8_t*)spillHandler64
, spillSize
);
394 //Set up the thread context to start running the process
395 assert(NumArgumentRegs
>= 2);
396 threadContexts
[0]->setIntReg(ArgumentReg
[0], argc
);
397 threadContexts
[0]->setIntReg(ArgumentReg
[1], argv_array_base
);
398 threadContexts
[0]->setIntReg(StackPointerReg
, stack_min
- StackBias
);
400 Addr prog_entry
= objFile
->entryPoint();
401 threadContexts
[0]->setPC(prog_entry
);
402 threadContexts
[0]->setNextPC(prog_entry
+ sizeof(MachInst
));
403 threadContexts
[0]->setNextNPC(prog_entry
+ (2 * sizeof(MachInst
)));
405 //Align the "stack_min" to a page boundary.
406 stack_min
= roundDown(stack_min
, pageSize
);
412 Sparc32LiveProcess::argsInit(int intSize
, int pageSize
)
414 typedef M5_32_auxv_t auxv_t
;
423 //Even though this is a 32 bit process, the ABI says we still need to
424 //maintain double word alignment of the stack pointer.
425 Addr alignmentMask
= ~(8 - 1);
427 // load object file into target memory
428 objFile
->loadSections(initVirtMem
);
430 //These are the auxilliary vector types
435 SPARC_AT_CLKTCK
= 17,
451 M5_HWCAP_SPARC_FLUSH
= 1,
452 M5_HWCAP_SPARC_STBAR
= 2,
453 M5_HWCAP_SPARC_SWAP
= 4,
454 M5_HWCAP_SPARC_MULDIV
= 8,
455 M5_HWCAP_SPARC_V9
= 16,
456 //This one should technically only be set
457 //if there is a cheetah or cheetah_plus tlb,
458 //but we'll use it all the time
459 M5_HWCAP_SPARC_ULTRA3
= 32
462 const int64_t hwcap
=
463 M5_HWCAP_SPARC_FLUSH
|
464 M5_HWCAP_SPARC_STBAR
|
465 M5_HWCAP_SPARC_SWAP
|
466 M5_HWCAP_SPARC_MULDIV
|
468 M5_HWCAP_SPARC_ULTRA3
;
471 //Setup the auxilliary vectors. These will already have endian conversion.
472 //Auxilliary vectors are loaded only for elf formatted executables.
473 ElfObject
* elfObject
= dynamic_cast<ElfObject
*>(objFile
);
476 //Bits which describe the system hardware capabilities
477 auxv
.push_back(auxv_t(SPARC_AT_HWCAP
, hwcap
));
478 //The system page size
479 auxv
.push_back(auxv_t(SPARC_AT_PAGESZ
, SparcISA::VMPageSize
));
480 //Defined to be 100 in the kernel source.
481 //Frequency at which times() increments
482 auxv
.push_back(auxv_t(SPARC_AT_CLKTCK
, 100));
483 // For statically linked executables, this is the virtual address of the
484 // program header tables if they appear in the executable image
485 auxv
.push_back(auxv_t(SPARC_AT_PHDR
, elfObject
->programHeaderTable()));
486 // This is the size of a program header entry from the elf file.
487 auxv
.push_back(auxv_t(SPARC_AT_PHENT
, elfObject
->programHeaderSize()));
488 // This is the number of program headers from the original elf file.
489 auxv
.push_back(auxv_t(SPARC_AT_PHNUM
, elfObject
->programHeaderCount()));
490 //This is the address of the elf "interpreter", It should be set
491 //to 0 for regular executables. It should be something else
492 //(not sure what) for dynamic libraries.
493 auxv
.push_back(auxv_t(SPARC_AT_BASE
, 0));
494 //This is hardwired to 0 in the elf loading code in the kernel
495 auxv
.push_back(auxv_t(SPARC_AT_FLAGS
, 0));
496 //The entry point to the program
497 auxv
.push_back(auxv_t(SPARC_AT_ENTRY
, objFile
->entryPoint()));
498 //Different user and group IDs
499 auxv
.push_back(auxv_t(SPARC_AT_UID
, uid()));
500 auxv
.push_back(auxv_t(SPARC_AT_EUID
, euid()));
501 auxv
.push_back(auxv_t(SPARC_AT_GID
, gid()));
502 auxv
.push_back(auxv_t(SPARC_AT_EGID
, egid()));
503 //Whether to enable "secure mode" in the executable
504 auxv
.push_back(auxv_t(SPARC_AT_SECURE
, 0));
507 //Figure out how big the initial stack needs to be
509 // The unaccounted for 8 byte 0 at the top of the stack
510 int mysterious_size
= 8;
512 //This is the name of the file which is present on the initial stack
513 //It's purpose is to let the user space linker examine the original file.
514 int file_name_size
= filename
.size() + 1;
516 int env_data_size
= 0;
517 for (int i
= 0; i
< envp
.size(); ++i
) {
518 env_data_size
+= envp
[i
].size() + 1;
520 int arg_data_size
= 0;
521 for (int i
= 0; i
< argv
.size(); ++i
) {
522 arg_data_size
+= argv
[i
].size() + 1;
525 //The info_block - This seems to need an pad for some reason.
526 int info_block_size
=
530 arg_data_size
+ intSize
);
532 //Each auxilliary vector is two 4 byte words
533 int aux_array_size
= intSize
* 2 * (auxv
.size() + 1);
535 int envp_array_size
= intSize
* (envp
.size() + 1);
536 int argv_array_size
= intSize
* (argv
.size() + 1);
538 int argc_size
= intSize
;
539 int window_save_size
= intSize
* 16;
549 stack_min
= stack_base
- space_needed
;
550 stack_min
&= alignmentMask
;
551 stack_size
= stack_base
- stack_min
;
554 pTable
->allocate(roundDown(stack_min
, pageSize
),
555 roundUp(stack_size
, pageSize
));
557 // map out initial stack contents
558 uint32_t window_save_base
= stack_min
;
559 uint32_t argc_base
= window_save_base
+ window_save_size
;
560 uint32_t argv_array_base
= argc_base
+ argc_size
;
561 uint32_t envp_array_base
= argv_array_base
+ argv_array_size
;
562 uint32_t auxv_array_base
= envp_array_base
+ envp_array_size
;
563 //The info block is pushed up against the top of the stack, while
564 //the rest of the initial stack frame is aligned to an 8 byte boudary.
565 uint32_t arg_data_base
= stack_base
- info_block_size
+ intSize
;
566 uint32_t env_data_base
= arg_data_base
+ arg_data_size
;
567 uint32_t file_name_base
= env_data_base
+ env_data_size
;
568 uint32_t mysterious_base
= file_name_base
+ file_name_size
;
570 DPRINTF(Sparc
, "The addresses of items on the initial stack:\n");
571 DPRINTF(Sparc
, "0x%x - file name\n", file_name_base
);
572 DPRINTF(Sparc
, "0x%x - env data\n", env_data_base
);
573 DPRINTF(Sparc
, "0x%x - arg data\n", arg_data_base
);
574 DPRINTF(Sparc
, "0x%x - auxv array\n", auxv_array_base
);
575 DPRINTF(Sparc
, "0x%x - envp array\n", envp_array_base
);
576 DPRINTF(Sparc
, "0x%x - argv array\n", argv_array_base
);
577 DPRINTF(Sparc
, "0x%x - argc \n", argc_base
);
578 DPRINTF(Sparc
, "0x%x - window save\n", window_save_base
);
579 DPRINTF(Sparc
, "0x%x - stack min\n", stack_min
);
581 // write contents to stack
584 uint32_t argc
= argv
.size();
585 uint32_t guestArgc
= TheISA::htog(argc
);
587 //Write out the mysterious 0
588 uint64_t mysterious_zero
= 0;
589 initVirtMem
->writeBlob(mysterious_base
,
590 (uint8_t*)&mysterious_zero
, mysterious_size
);
592 //Write the file name
593 initVirtMem
->writeString(file_name_base
, filename
.c_str());
596 for(int x
= 0; x
< auxv
.size(); x
++)
598 initVirtMem
->writeBlob(auxv_array_base
+ x
* 2 * intSize
,
599 (uint8_t*)&(auxv
[x
].a_type
), intSize
);
600 initVirtMem
->writeBlob(auxv_array_base
+ (x
* 2 + 1) * intSize
,
601 (uint8_t*)&(auxv
[x
].a_val
), intSize
);
603 //Write out the terminating zeroed auxilliary vector
604 const uint64_t zero
= 0;
605 initVirtMem
->writeBlob(auxv_array_base
+ 2 * intSize
* auxv
.size(),
606 (uint8_t*)&zero
, 2 * intSize
);
608 copyStringArray(envp
, envp_array_base
, env_data_base
, initVirtMem
);
609 copyStringArray(argv
, argv_array_base
, arg_data_base
, initVirtMem
);
611 initVirtMem
->writeBlob(argc_base
, (uint8_t*)&guestArgc
, intSize
);
613 //Stuff the trap handlers into the processes address space.
614 //Since the stack grows down and is the highest area in the processes
615 //address space, we can put stuff above it and stay out of the way.
616 int fillSize
= sizeof(MachInst
) * numFillInsts
;
617 int spillSize
= sizeof(MachInst
) * numSpillInsts
;
618 fillStart
= stack_base
;
619 spillStart
= fillStart
+ fillSize
;
620 initVirtMem
->writeBlob(fillStart
, (uint8_t*)fillHandler32
, fillSize
);
621 initVirtMem
->writeBlob(spillStart
, (uint8_t*)spillHandler32
, spillSize
);
623 //Set up the thread context to start running the process
624 //assert(NumArgumentRegs >= 2);
625 //threadContexts[0]->setIntReg(ArgumentReg[0], argc);
626 //threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base);
627 threadContexts
[0]->setIntReg(StackPointerReg
, stack_min
);
629 uint32_t prog_entry
= objFile
->entryPoint();
630 threadContexts
[0]->setPC(prog_entry
);
631 threadContexts
[0]->setNextPC(prog_entry
+ sizeof(MachInst
));
632 threadContexts
[0]->setNextNPC(prog_entry
+ (2 * sizeof(MachInst
)));
634 //Align the "stack_min" to a page boundary.
635 stack_min
= roundDown(stack_min
, pageSize
);