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; --- 84 unchanged lines hidden (view full) --- 93#include "base/loader/object_file.hh" 94#include "base/loader/elf_object.hh" 95#include "base/misc.hh" 96#include "base/trace.hh" 97#include "cpu/thread_context.hh" 98#include "mem/page_table.hh" 99#include "mem/translating_port.hh" 100#include "sim/process_impl.hh" |
101#include "sim/syscall_emul.hh" |
102#include "sim/system.hh" 103 104using namespace std; 105using namespace X86ISA; 106 107 |
108X86LiveProcess::X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile, 109 SyscallDesc *_syscallDescs, int _numSyscallDescs) : 110 LiveProcess(params, objFile), syscallDescs(_syscallDescs), 111 numSyscallDescs(_numSyscallDescs) |
112{ 113 brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 114 brk_point = roundUp(brk_point, VMPageSize); |
115} |
116 |
117X86_64LiveProcess::X86_64LiveProcess(LiveProcessParams *params, 118 ObjectFile *objFile, SyscallDesc *_syscallDescs, 119 int _numSyscallDescs) : 120 X86LiveProcess(params, objFile, _syscallDescs, _numSyscallDescs) 121{ |
122 // Set up stack. On X86_64 Linux, stack goes from the top of memory 123 // downward, less the hole for the kernel address space plus one page 124 // for undertermined purposes. 125 stack_base = (Addr)0x7FFFFFFFF000ULL; 126 |
127 // Set pointer for next thread stack. Reserve 8M for main stack. 128 next_thread_stack_base = stack_base - (8 * 1024 * 1024); 129 |
130 // Set up region for mmaps. This was determined empirically and may not 131 // always be correct. 132 mmap_start = mmap_end = (Addr)0x2aaaaaaab000ULL; 133} 134 |
135I386LiveProcess::I386LiveProcess(LiveProcessParams *params, 136 ObjectFile *objFile, SyscallDesc *_syscallDescs, 137 int _numSyscallDescs) : 138 X86LiveProcess(params, objFile, _syscallDescs, _numSyscallDescs) |
139{ |
140 stack_base = (Addr)0xffffe000ULL; 141 142 // Set pointer for next thread stack. Reserve 8M for main stack. 143 next_thread_stack_base = stack_base - (8 * 1024 * 1024); 144 145 // Set up region for mmaps. This was determined empirically and may not 146 // always be correct. 147 mmap_start = mmap_end = (Addr)0xf7ffd000ULL; |
148} 149 |
150SyscallDesc* 151X86LiveProcess::getDesc(int callnum) 152{ 153 if (callnum < 0 || callnum >= numSyscallDescs) 154 return NULL; 155 return &syscallDescs[callnum]; 156} 157 |
158void |
159X86_64LiveProcess::startup() |
160{ |
161 LiveProcess::startup(); 162 |
163 if (checkpointRestored) 164 return; 165 |
166 argsInit(sizeof(uint64_t), VMPageSize); |
167 168 for (int i = 0; i < contextIds.size(); i++) { 169 ThreadContext * tc = system->getThreadContext(contextIds[i]); 170 171 SegAttr dataAttr = 0; 172 dataAttr.writable = 1; 173 dataAttr.readable = 1; 174 dataAttr.expandDown = 0; --- 42 unchanged lines hidden (view full) --- 217 efer.nxe = 1; // Enable nx support. 218 efer.svme = 0; // Disable svm support for now. It isn't implemented. 219 efer.ffxsr = 1; // Turn on fast fxsave and fxrstor. 220 tc->setMiscReg(MISCREG_EFER, efer); 221 } 222} 223 224void |
225I386LiveProcess::startup() |
226{ |
227 LiveProcess::startup(); |
228 |
229 if (checkpointRestored) 230 return; |
231 |
232 argsInit(sizeof(uint32_t), VMPageSize); 233 234 for (int i = 0; i < contextIds.size(); i++) { 235 ThreadContext * tc = system->getThreadContext(contextIds[i]); 236 237 SegAttr dataAttr = 0; 238 dataAttr.writable = 1; 239 dataAttr.readable = 1; 240 dataAttr.expandDown = 0; 241 dataAttr.dpl = 3; 242 dataAttr.defaultSize = 1; 243 dataAttr.longMode = 0; 244 245 //Initialize the segment registers. 246 for(int seg = 0; seg < NUM_SEGMENTREGS; seg++) { 247 tc->setMiscRegNoEffect(MISCREG_SEG_BASE(seg), 0); 248 tc->setMiscRegNoEffect(MISCREG_SEG_EFF_BASE(seg), 0); 249 tc->setMiscRegNoEffect(MISCREG_SEG_ATTR(seg), dataAttr); 250 tc->setMiscRegNoEffect(MISCREG_SEG_SEL(seg), 0xB); 251 } 252 253 SegAttr csAttr = 0; 254 csAttr.writable = 0; 255 csAttr.readable = 1; 256 csAttr.expandDown = 0; 257 csAttr.dpl = 3; 258 csAttr.defaultSize = 1; 259 csAttr.longMode = 0; 260 261 tc->setMiscRegNoEffect(MISCREG_CS_ATTR, csAttr); 262 263 //Set up the registers that describe the operating mode. 264 CR0 cr0 = 0; 265 cr0.pg = 1; // Turn on paging. 266 cr0.cd = 0; // Don't disable caching. 267 cr0.nw = 0; // This is bit is defined to be ignored. 268 cr0.am = 0; // No alignment checking 269 cr0.wp = 0; // Supervisor mode can write read only pages 270 cr0.ne = 1; 271 cr0.et = 1; // This should always be 1 272 cr0.ts = 0; // We don't do task switching, so causing fp exceptions 273 // would be pointless. 274 cr0.em = 0; // Allow x87 instructions to execute natively. 275 cr0.mp = 1; // This doesn't really matter, but the manual suggests 276 // setting it to one. 277 cr0.pe = 1; // We're definitely in protected mode. 278 tc->setMiscReg(MISCREG_CR0, cr0); 279 280 Efer efer = 0; 281 efer.sce = 1; // Enable system call extensions. 282 efer.lme = 1; // Enable long mode. 283 efer.lma = 0; // Deactivate long mode. 284 efer.nxe = 1; // Enable nx support. 285 efer.svme = 0; // Disable svm support for now. It isn't implemented. 286 efer.ffxsr = 1; // Turn on fast fxsave and fxrstor. 287 tc->setMiscReg(MISCREG_EFER, efer); 288 } 289} 290 291template<class IntType> 292void 293X86LiveProcess::argsInit(int pageSize) 294{ 295 int intSize = sizeof(IntType); 296 297 typedef AuxVector<IntType> auxv_t; 298 std::vector<auxv_t> auxv; 299 |
300 string filename; 301 if(argv.size() < 1) 302 filename = ""; 303 else 304 filename = argv[0]; 305 306 //We want 16 byte alignment 307 uint64_t align = 16; --- 175 unchanged lines hidden (view full) --- 483 stack_min = roundDown(stack_min, align); 484 stack_size = stack_base - stack_min; 485 486 // map memory 487 pTable->allocate(roundDown(stack_min, pageSize), 488 roundUp(stack_size, pageSize)); 489 490 // map out initial stack contents |
491 IntType sentry_base = stack_base - sentry_size; 492 IntType file_name_base = sentry_base - file_name_size; 493 IntType env_data_base = file_name_base - env_data_size; 494 IntType arg_data_base = env_data_base - arg_data_size; 495 IntType aux_data_base = arg_data_base - info_block_padding - aux_data_size; 496 IntType auxv_array_base = aux_data_base - aux_array_size - aux_padding; 497 IntType envp_array_base = auxv_array_base - envp_array_size; 498 IntType argv_array_base = envp_array_base - argv_array_size; 499 IntType argc_base = argv_array_base - argc_size; |
500 501 DPRINTF(Stack, "The addresses of items on the initial stack:\n"); 502 DPRINTF(Stack, "0x%x - file name\n", file_name_base); 503 DPRINTF(Stack, "0x%x - env data\n", env_data_base); 504 DPRINTF(Stack, "0x%x - arg data\n", arg_data_base); 505 DPRINTF(Stack, "0x%x - aux data\n", aux_data_base); 506 DPRINTF(Stack, "0x%x - auxv array\n", auxv_array_base); 507 DPRINTF(Stack, "0x%x - envp array\n", envp_array_base); 508 DPRINTF(Stack, "0x%x - argv array\n", argv_array_base); 509 DPRINTF(Stack, "0x%x - argc \n", argc_base); 510 DPRINTF(Stack, "0x%x - stack min\n", stack_min); 511 512 // write contents to stack 513 514 // figure out argc |
515 IntType argc = argv.size(); 516 IntType guestArgc = X86ISA::htog(argc); |
517 518 //Write out the sentry void * |
519 IntType sentry_NULL = 0; |
520 initVirtMem->writeBlob(sentry_base, 521 (uint8_t*)&sentry_NULL, sentry_size); 522 523 //Write the file name 524 initVirtMem->writeString(file_name_base, filename.c_str()); 525 526 //Fix up the aux vector which points to the "platform" string 527 assert(auxv[auxv.size() - 1].a_type = M5_AT_PLATFORM); --- 29 unchanged lines hidden (view full) --- 557 tc->setPC(prog_entry); 558 tc->setNextPC(prog_entry + sizeof(MachInst)); 559 560 //Align the "stack_min" to a page boundary. 561 stack_min = roundDown(stack_min, pageSize); 562 563// num_processes++; 564} |
565 566void 567X86_64LiveProcess::argsInit(int intSize, int pageSize) 568{ 569 X86LiveProcess::argsInit<uint64_t>(pageSize); 570} 571 572void 573I386LiveProcess::argsInit(int intSize, int pageSize) 574{ 575 X86LiveProcess::argsInit<uint32_t>(pageSize); 576} |