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
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14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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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
);
127 Sparc64LiveProcess::startup()
129 argsInit(sizeof(IntReg
), VMPageSize
);
133 //The process runs in user mode
134 threadContexts
[0]->setMiscReg(MISCREG_PSTATE
, 0x02);
136 //Setup default FP state
137 threadContexts
[0]->setMiscRegNoEffect(MISCREG_FSR
, 0);
139 threadContexts
[0]->setMiscRegNoEffect(MISCREG_TICK
, 0);
142 * Register window management registers
145 //No windows contain info from other programs
146 //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
147 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 6, 0);
148 //There are no windows to pop
149 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
150 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 4, 0);
151 //All windows are available to save into
152 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
153 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 3, NWindows
- 2);
154 //All windows are "clean"
155 //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
156 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 5, NWindows
);
157 //Start with register window 0
158 threadContexts
[0]->setMiscRegNoEffect(MISCREG_CWP
, 0);
159 //Always use spill and fill traps 0
160 //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
161 threadContexts
[0]->setIntReg(NumIntArchRegs
+ 7, 0);
162 //Set the trap level to 0
163 threadContexts
[0]->setMiscRegNoEffect(MISCREG_TL
, 0);
164 //Set the ASI register to something fixed
165 threadContexts
[0]->setMiscRegNoEffect(MISCREG_ASI
, ASI_PRIMARY
);
168 M5_32_auxv_t::M5_32_auxv_t(int32_t type
, int32_t val
)
170 a_type
= TheISA::htog(type
);
171 a_val
= TheISA::htog(val
);
174 M5_64_auxv_t::M5_64_auxv_t(int64_t type
, int64_t val
)
176 a_type
= TheISA::htog(type
);
177 a_val
= TheISA::htog(val
);
181 Sparc64LiveProcess::argsInit(int intSize
, int pageSize
)
183 typedef M5_64_auxv_t auxv_t
;
192 Addr alignmentMask
= ~(intSize
- 1);
194 // load object file into target memory
195 objFile
->loadSections(initVirtMem
);
197 //These are the auxilliary vector types
202 SPARC_AT_CLKTCK
= 17,
218 M5_HWCAP_SPARC_FLUSH
= 1,
219 M5_HWCAP_SPARC_STBAR
= 2,
220 M5_HWCAP_SPARC_SWAP
= 4,
221 M5_HWCAP_SPARC_MULDIV
= 8,
222 M5_HWCAP_SPARC_V9
= 16,
223 //This one should technically only be set
224 //if there is a cheetah or cheetah_plus tlb,
225 //but we'll use it all the time
226 M5_HWCAP_SPARC_ULTRA3
= 32
229 const int64_t hwcap
=
230 M5_HWCAP_SPARC_FLUSH
|
231 M5_HWCAP_SPARC_STBAR
|
232 M5_HWCAP_SPARC_SWAP
|
233 M5_HWCAP_SPARC_MULDIV
|
235 M5_HWCAP_SPARC_ULTRA3
;
238 //Setup the auxilliary vectors. These will already have endian conversion.
239 //Auxilliary vectors are loaded only for elf formatted executables.
240 ElfObject
* elfObject
= dynamic_cast<ElfObject
*>(objFile
);
243 //Bits which describe the system hardware capabilities
244 auxv
.push_back(auxv_t(SPARC_AT_HWCAP
, hwcap
));
245 //The system page size
246 auxv
.push_back(auxv_t(SPARC_AT_PAGESZ
, SparcISA::VMPageSize
));
247 //Defined to be 100 in the kernel source.
248 //Frequency at which times() increments
249 auxv
.push_back(auxv_t(SPARC_AT_CLKTCK
, 100));
250 // For statically linked executables, this is the virtual address of the
251 // program header tables if they appear in the executable image
252 auxv
.push_back(auxv_t(SPARC_AT_PHDR
, elfObject
->programHeaderTable()));
253 // This is the size of a program header entry from the elf file.
254 auxv
.push_back(auxv_t(SPARC_AT_PHENT
, elfObject
->programHeaderSize()));
255 // This is the number of program headers from the original elf file.
256 auxv
.push_back(auxv_t(SPARC_AT_PHNUM
, elfObject
->programHeaderCount()));
257 //This is the address of the elf "interpreter", It should be set
258 //to 0 for regular executables. It should be something else
259 //(not sure what) for dynamic libraries.
260 auxv
.push_back(auxv_t(SPARC_AT_BASE
, 0));
261 //This is hardwired to 0 in the elf loading code in the kernel
262 auxv
.push_back(auxv_t(SPARC_AT_FLAGS
, 0));
263 //The entry point to the program
264 auxv
.push_back(auxv_t(SPARC_AT_ENTRY
, objFile
->entryPoint()));
265 //Different user and group IDs
266 auxv
.push_back(auxv_t(SPARC_AT_UID
, uid()));
267 auxv
.push_back(auxv_t(SPARC_AT_EUID
, euid()));
268 auxv
.push_back(auxv_t(SPARC_AT_GID
, gid()));
269 auxv
.push_back(auxv_t(SPARC_AT_EGID
, egid()));
270 //Whether to enable "secure mode" in the executable
271 auxv
.push_back(auxv_t(SPARC_AT_SECURE
, 0));
274 //Figure out how big the initial stack needs to be
276 // The unaccounted for 0 at the top of the stack
277 int mysterious_size
= intSize
;
279 //This is the name of the file which is present on the initial stack
280 //It's purpose is to let the user space linker examine the original file.
281 int file_name_size
= filename
.size() + 1;
283 int env_data_size
= 0;
284 for (int i
= 0; i
< envp
.size(); ++i
) {
285 env_data_size
+= envp
[i
].size() + 1;
287 int arg_data_size
= 0;
288 for (int i
= 0; i
< argv
.size(); ++i
) {
289 arg_data_size
+= argv
[i
].size() + 1;
292 //The info_block needs to be padded so it's size is a multiple of the
293 //alignment mask. Also, it appears that there needs to be at least some
294 //padding, so if the size is already a multiple, we need to increase it
296 int info_block_size
=
300 intSize
) & alignmentMask
;
302 int info_block_padding
=
308 //Each auxilliary vector is two 8 byte words
309 int aux_array_size
= intSize
* 2 * (auxv
.size() + 1);
311 int envp_array_size
= intSize
* (envp
.size() + 1);
312 int argv_array_size
= intSize
* (argv
.size() + 1);
314 int argc_size
= intSize
;
315 int window_save_size
= intSize
* 16;
326 stack_min
= stack_base
- space_needed
;
327 stack_min
&= alignmentMask
;
328 stack_size
= stack_base
- stack_min
;
331 pTable
->allocate(roundDown(stack_min
, pageSize
),
332 roundUp(stack_size
, pageSize
));
334 // map out initial stack contents
335 Addr mysterious_base
= stack_base
- mysterious_size
;
336 Addr file_name_base
= mysterious_base
- file_name_size
;
337 Addr env_data_base
= file_name_base
- env_data_size
;
338 Addr arg_data_base
= env_data_base
- arg_data_size
;
339 Addr auxv_array_base
= arg_data_base
- aux_array_size
- info_block_padding
;
340 Addr envp_array_base
= auxv_array_base
- envp_array_size
;
341 Addr argv_array_base
= envp_array_base
- argv_array_size
;
342 Addr argc_base
= argv_array_base
- argc_size
;
344 // only used in DPRINTF
345 Addr window_save_base
= argc_base
- window_save_size
;
348 DPRINTF(Sparc
, "The addresses of items on the initial stack:\n");
349 DPRINTF(Sparc
, "0x%x - file name\n", file_name_base
);
350 DPRINTF(Sparc
, "0x%x - env data\n", env_data_base
);
351 DPRINTF(Sparc
, "0x%x - arg data\n", arg_data_base
);
352 DPRINTF(Sparc
, "0x%x - auxv array\n", auxv_array_base
);
353 DPRINTF(Sparc
, "0x%x - envp array\n", envp_array_base
);
354 DPRINTF(Sparc
, "0x%x - argv array\n", argv_array_base
);
355 DPRINTF(Sparc
, "0x%x - argc \n", argc_base
);
356 DPRINTF(Sparc
, "0x%x - window save\n", window_save_base
);
357 DPRINTF(Sparc
, "0x%x - stack min\n", stack_min
);
359 // write contents to stack
362 uint64_t argc
= argv
.size();
363 uint64_t guestArgc
= TheISA::htog(argc
);
365 //Write out the mysterious 0
366 uint64_t mysterious_zero
= 0;
367 initVirtMem
->writeBlob(mysterious_base
,
368 (uint8_t*)&mysterious_zero
, mysterious_size
);
370 //Write the file name
371 initVirtMem
->writeString(file_name_base
, filename
.c_str());
374 for(int x
= 0; x
< auxv
.size(); x
++)
376 initVirtMem
->writeBlob(auxv_array_base
+ x
* 2 * intSize
,
377 (uint8_t*)&(auxv
[x
].a_type
), intSize
);
378 initVirtMem
->writeBlob(auxv_array_base
+ (x
* 2 + 1) * intSize
,
379 (uint8_t*)&(auxv
[x
].a_val
), intSize
);
381 //Write out the terminating zeroed auxilliary vector
382 const uint64_t zero
= 0;
383 initVirtMem
->writeBlob(auxv_array_base
+ 2 * intSize
* auxv
.size(),
384 (uint8_t*)&zero
, 2 * intSize
);
386 copyStringArray(envp
, envp_array_base
, env_data_base
, initVirtMem
);
387 copyStringArray(argv
, argv_array_base
, arg_data_base
, initVirtMem
);
389 initVirtMem
->writeBlob(argc_base
, (uint8_t*)&guestArgc
, intSize
);
391 //Stuff the trap handlers into the processes address space.
392 //Since the stack grows down and is the highest area in the processes
393 //address space, we can put stuff above it and stay out of the way.
394 int fillSize
= sizeof(MachInst
) * numFillInsts
;
395 int spillSize
= sizeof(MachInst
) * numSpillInsts
;
396 fillStart
= stack_base
;
397 spillStart
= fillStart
+ fillSize
;
398 initVirtMem
->writeBlob(fillStart
, (uint8_t*)fillHandler64
, fillSize
);
399 initVirtMem
->writeBlob(spillStart
, (uint8_t*)spillHandler64
, spillSize
);
401 //Set up the thread context to start running the process
402 threadContexts
[0]->setIntReg(ArgumentReg0
, argc
);
403 threadContexts
[0]->setIntReg(ArgumentReg1
, argv_array_base
);
404 threadContexts
[0]->setIntReg(StackPointerReg
, stack_min
- StackBias
);
406 Addr prog_entry
= objFile
->entryPoint();
407 threadContexts
[0]->setPC(prog_entry
);
408 threadContexts
[0]->setNextPC(prog_entry
+ sizeof(MachInst
));
409 threadContexts
[0]->setNextNPC(prog_entry
+ (2 * sizeof(MachInst
)));
411 //Align the "stack_min" to a page boundary.
412 stack_min
= roundDown(stack_min
, pageSize
);
418 Sparc32LiveProcess::argsInit(int intSize
, int pageSize
)
420 typedef M5_32_auxv_t auxv_t
;
429 //Even though this is a 32 bit process, the ABI says we still need to
430 //maintain double word alignment of the stack pointer.
431 Addr alignmentMask
= ~(8 - 1);
433 // load object file into target memory
434 objFile
->loadSections(initVirtMem
);
436 //These are the auxilliary vector types
441 SPARC_AT_CLKTCK
= 17,
457 M5_HWCAP_SPARC_FLUSH
= 1,
458 M5_HWCAP_SPARC_STBAR
= 2,
459 M5_HWCAP_SPARC_SWAP
= 4,
460 M5_HWCAP_SPARC_MULDIV
= 8,
461 M5_HWCAP_SPARC_V9
= 16,
462 //This one should technically only be set
463 //if there is a cheetah or cheetah_plus tlb,
464 //but we'll use it all the time
465 M5_HWCAP_SPARC_ULTRA3
= 32
468 const int64_t hwcap
=
469 M5_HWCAP_SPARC_FLUSH
|
470 M5_HWCAP_SPARC_STBAR
|
471 M5_HWCAP_SPARC_SWAP
|
472 M5_HWCAP_SPARC_MULDIV
|
474 M5_HWCAP_SPARC_ULTRA3
;
477 //Setup the auxilliary vectors. These will already have endian conversion.
478 //Auxilliary vectors are loaded only for elf formatted executables.
479 ElfObject
* elfObject
= dynamic_cast<ElfObject
*>(objFile
);
482 //Bits which describe the system hardware capabilities
483 auxv
.push_back(auxv_t(SPARC_AT_HWCAP
, hwcap
));
484 //The system page size
485 auxv
.push_back(auxv_t(SPARC_AT_PAGESZ
, SparcISA::VMPageSize
));
486 //Defined to be 100 in the kernel source.
487 //Frequency at which times() increments
488 auxv
.push_back(auxv_t(SPARC_AT_CLKTCK
, 100));
489 // For statically linked executables, this is the virtual address of the
490 // program header tables if they appear in the executable image
491 auxv
.push_back(auxv_t(SPARC_AT_PHDR
, elfObject
->programHeaderTable()));
492 // This is the size of a program header entry from the elf file.
493 auxv
.push_back(auxv_t(SPARC_AT_PHENT
, elfObject
->programHeaderSize()));
494 // This is the number of program headers from the original elf file.
495 auxv
.push_back(auxv_t(SPARC_AT_PHNUM
, elfObject
->programHeaderCount()));
496 //This is the address of the elf "interpreter", It should be set
497 //to 0 for regular executables. It should be something else
498 //(not sure what) for dynamic libraries.
499 auxv
.push_back(auxv_t(SPARC_AT_BASE
, 0));
500 //This is hardwired to 0 in the elf loading code in the kernel
501 auxv
.push_back(auxv_t(SPARC_AT_FLAGS
, 0));
502 //The entry point to the program
503 auxv
.push_back(auxv_t(SPARC_AT_ENTRY
, objFile
->entryPoint()));
504 //Different user and group IDs
505 auxv
.push_back(auxv_t(SPARC_AT_UID
, uid()));
506 auxv
.push_back(auxv_t(SPARC_AT_EUID
, euid()));
507 auxv
.push_back(auxv_t(SPARC_AT_GID
, gid()));
508 auxv
.push_back(auxv_t(SPARC_AT_EGID
, egid()));
509 //Whether to enable "secure mode" in the executable
510 auxv
.push_back(auxv_t(SPARC_AT_SECURE
, 0));
513 //Figure out how big the initial stack needs to be
515 // The unaccounted for 8 byte 0 at the top of the stack
516 int mysterious_size
= 8;
518 //This is the name of the file which is present on the initial stack
519 //It's purpose is to let the user space linker examine the original file.
520 int file_name_size
= filename
.size() + 1;
522 int env_data_size
= 0;
523 for (int i
= 0; i
< envp
.size(); ++i
) {
524 env_data_size
+= envp
[i
].size() + 1;
526 int arg_data_size
= 0;
527 for (int i
= 0; i
< argv
.size(); ++i
) {
528 arg_data_size
+= argv
[i
].size() + 1;
531 //The info_block - This seems to need an pad for some reason.
532 int info_block_size
=
536 arg_data_size
+ intSize
);
538 //Each auxilliary vector is two 4 byte words
539 int aux_array_size
= intSize
* 2 * (auxv
.size() + 1);
541 int envp_array_size
= intSize
* (envp
.size() + 1);
542 int argv_array_size
= intSize
* (argv
.size() + 1);
544 int argc_size
= intSize
;
545 int window_save_size
= intSize
* 16;
555 stack_min
= stack_base
- space_needed
;
556 stack_min
&= alignmentMask
;
557 stack_size
= stack_base
- stack_min
;
560 pTable
->allocate(roundDown(stack_min
, pageSize
),
561 roundUp(stack_size
, pageSize
));
563 // map out initial stack contents
564 uint32_t window_save_base
= stack_min
;
565 uint32_t argc_base
= window_save_base
+ window_save_size
;
566 uint32_t argv_array_base
= argc_base
+ argc_size
;
567 uint32_t envp_array_base
= argv_array_base
+ argv_array_size
;
568 uint32_t auxv_array_base
= envp_array_base
+ envp_array_size
;
569 //The info block is pushed up against the top of the stack, while
570 //the rest of the initial stack frame is aligned to an 8 byte boudary.
571 uint32_t arg_data_base
= stack_base
- info_block_size
+ intSize
;
572 uint32_t env_data_base
= arg_data_base
+ arg_data_size
;
573 uint32_t file_name_base
= env_data_base
+ env_data_size
;
574 uint32_t mysterious_base
= file_name_base
+ file_name_size
;
576 DPRINTF(Sparc
, "The addresses of items on the initial stack:\n");
577 DPRINTF(Sparc
, "0x%x - file name\n", file_name_base
);
578 DPRINTF(Sparc
, "0x%x - env data\n", env_data_base
);
579 DPRINTF(Sparc
, "0x%x - arg data\n", arg_data_base
);
580 DPRINTF(Sparc
, "0x%x - auxv array\n", auxv_array_base
);
581 DPRINTF(Sparc
, "0x%x - envp array\n", envp_array_base
);
582 DPRINTF(Sparc
, "0x%x - argv array\n", argv_array_base
);
583 DPRINTF(Sparc
, "0x%x - argc \n", argc_base
);
584 DPRINTF(Sparc
, "0x%x - window save\n", window_save_base
);
585 DPRINTF(Sparc
, "0x%x - stack min\n", stack_min
);
587 // write contents to stack
590 uint32_t argc
= argv
.size();
591 uint32_t guestArgc
= TheISA::htog(argc
);
593 //Write out the mysterious 0
594 uint64_t mysterious_zero
= 0;
595 initVirtMem
->writeBlob(mysterious_base
,
596 (uint8_t*)&mysterious_zero
, mysterious_size
);
598 //Write the file name
599 initVirtMem
->writeString(file_name_base
, filename
.c_str());
602 for(int x
= 0; x
< auxv
.size(); x
++)
604 initVirtMem
->writeBlob(auxv_array_base
+ x
* 2 * intSize
,
605 (uint8_t*)&(auxv
[x
].a_type
), intSize
);
606 initVirtMem
->writeBlob(auxv_array_base
+ (x
* 2 + 1) * intSize
,
607 (uint8_t*)&(auxv
[x
].a_val
), intSize
);
609 //Write out the terminating zeroed auxilliary vector
610 const uint64_t zero
= 0;
611 initVirtMem
->writeBlob(auxv_array_base
+ 2 * intSize
* auxv
.size(),
612 (uint8_t*)&zero
, 2 * intSize
);
614 copyStringArray(envp
, envp_array_base
, env_data_base
, initVirtMem
);
615 copyStringArray(argv
, argv_array_base
, arg_data_base
, initVirtMem
);
617 initVirtMem
->writeBlob(argc_base
, (uint8_t*)&guestArgc
, intSize
);
619 //Stuff the trap handlers into the processes address space.
620 //Since the stack grows down and is the highest area in the processes
621 //address space, we can put stuff above it and stay out of the way.
622 int fillSize
= sizeof(MachInst
) * numFillInsts
;
623 int spillSize
= sizeof(MachInst
) * numSpillInsts
;
624 fillStart
= stack_base
;
625 spillStart
= fillStart
+ fillSize
;
626 initVirtMem
->writeBlob(fillStart
, (uint8_t*)fillHandler32
, fillSize
);
627 initVirtMem
->writeBlob(spillStart
, (uint8_t*)spillHandler32
, spillSize
);
629 //Set up the thread context to start running the process
630 //threadContexts[0]->setIntReg(ArgumentReg0, argc);
631 //threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
632 threadContexts
[0]->setIntReg(StackPointerReg
, stack_min
);
634 uint32_t prog_entry
= objFile
->entryPoint();
635 threadContexts
[0]->setPC(prog_entry
);
636 threadContexts
[0]->setNextPC(prog_entry
+ sizeof(MachInst
));
637 threadContexts
[0]->setNextNPC(prog_entry
+ (2 * sizeof(MachInst
)));
639 //Align the "stack_min" to a page boundary.
640 stack_min
= roundDown(stack_min
, pageSize
);