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;

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263
264 //Each auxilliary vector is two 8 byte words
265 int aux_array_size = intSize * 2 * (auxv.size() + 1);
266
267 int envp_array_size = intSize * (envp.size() + 1);
268 int argv_array_size = intSize * (argv.size() + 1);
269
270 int argc_size = intSize;
271
272 int space_needed =
273 mysterious_size +
274 info_block_size +
275 aux_array_size +
276 envp_array_size +
277 argv_array_size +
278 argc_size;
279
280 stack_min = stack_base - space_needed;
281 stack_min &= alignmentMask;
282 stack_size = stack_base - stack_min;
283
284 // map memory
285 pTable->allocate(roundDown(stack_min, pageSize),
286 roundUp(stack_size, pageSize));
287
288 // map out initial stack contents
289 Addr mysterious_base = stack_base - mysterious_size;
290 Addr file_name_base = mysterious_base - file_name_size;
291 Addr env_data_base = file_name_base - env_data_size;
292 Addr arg_data_base = env_data_base - arg_data_size;
293 Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding;
294 Addr envp_array_base = auxv_array_base - envp_array_size;
295 Addr argv_array_base = envp_array_base - argv_array_size;
296 Addr argc_base = argv_array_base - argc_size;
297
298 DPRINTF(X86, "The addresses of items on the initial stack:\n");
299 DPRINTF(X86, "0x%x - file name\n", file_name_base);
300 DPRINTF(X86, "0x%x - env data\n", env_data_base);
301 DPRINTF(X86, "0x%x - arg data\n", arg_data_base);
302 DPRINTF(X86, "0x%x - auxv array\n", auxv_array_base);
303 DPRINTF(X86, "0x%x - envp array\n", envp_array_base);
304 DPRINTF(X86, "0x%x - argv array\n", argv_array_base);
305 DPRINTF(X86, "0x%x - argc \n", argc_base);
306 DPRINTF(X86, "0x%x - stack min\n", stack_min);
307
308 // write contents to stack
309
310 // figure out argc
311 uint64_t argc = argv.size();
312 uint64_t guestArgc = TheISA::htog(argc);
313

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