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gem5/src/arch/sparc/process.cc
Ali Saidi cb0cf2dd8a Updated Authors from bk prs info 
--HG--
extra : convert_revision : 77f475b156d81c03a2811818fa23593d5615c685
2006-05-31 19:26:56 -04:00

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/*
* Copyright (c) 2003-2004 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
* Ali Saidi
*/
#include "arch/sparc/isa_traits.hh"
#include "arch/sparc/process.hh"
#include "arch/sparc/linux/process.hh"
#include "arch/sparc/solaris/process.hh"
#include "base/loader/object_file.hh"
#include "base/misc.hh"
#include "cpu/exec_context.hh"
#include "mem/page_table.hh"
#include "mem/translating_port.hh"
#include "sim/builder.hh"
#include "sim/system.hh"
using namespace std;
using namespace SparcISA;
SparcLiveProcess *
SparcLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
int stdout_fd, int stderr_fd, std::string executable,
std::vector<std::string> &argv, std::vector<std::string> &envp)
{
SparcLiveProcess *process = NULL;
ObjectFile *objFile = createObjectFile(executable);
if (objFile == NULL) {
fatal("Can't load object file %s", executable);
}
if (objFile->getArch() != ObjectFile::SPARC)
fatal("Object file with arch %x does not match architecture %x.",
objFile->getArch(), ObjectFile::SPARC);
switch (objFile->getOpSys()) {
case ObjectFile::Linux:
process = new SparcLinuxProcess(nm, objFile, system,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
case ObjectFile::Solaris:
process = new SparcSolarisProcess(nm, objFile, system,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
default:
fatal("Unknown/unsupported operating system.");
}
if (process == NULL)
fatal("Unknown error creating process object.");
return process;
}
SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile,
System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
std::vector<std::string> &argv, std::vector<std::string> &envp)
: LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
argv, envp)
{
// XXX all the below need to be updated for SPARC - Ali
brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
brk_point = roundUp(brk_point, VMPageSize);
// Set up stack. On SPARC Linux, stack goes from the top of memory
// downward, less the hole for the kernel address space.
stack_base = ((Addr)0x80000000000ULL);
// Set up region for mmaps. Tru64 seems to start just above 0 and
// grow up from there.
mmap_start = mmap_end = 0x800000;
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);
}
void
SparcLiveProcess::startup()
{
argsInit(MachineBytes, VMPageSize);
//From the SPARC ABI
//The process runs in user mode
execContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE, 0x02);
//Setup default FP state
execContexts[0]->setMiscReg(MISCREG_FSR, 0);
execContexts[0]->setMiscReg(MISCREG_TICK, 0);
//
/*
* Register window management registers
*/
//No windows contain info from other programs
execContexts[0]->setMiscRegWithEffect(MISCREG_OTHERWIN, 0);
//There are no windows to pop
execContexts[0]->setMiscRegWithEffect(MISCREG_CANRESTORE, 0);
//All windows are available to save into
execContexts[0]->setMiscRegWithEffect(MISCREG_CANSAVE, NWindows - 2);
//All windows are "clean"
execContexts[0]->setMiscRegWithEffect(MISCREG_CLEANWIN, NWindows);
//Start with register window 0
execContexts[0]->setMiscRegWithEffect(MISCREG_CWP, 0);
}
m5_auxv_t buildAuxVect(int64_t type, int64_t val)
{
m5_auxv_t result;
result.a_type = TheISA::htog(type);
result.a_val = TheISA::htog(val);
return result;
}
void
SparcLiveProcess::argsInit(int intSize, int pageSize)
{
Process::startup();
Addr alignmentMask = ~(intSize - 1);
// load object file into target memory
objFile->loadSections(initVirtMem);
//These are the auxilliary vector types
enum auxTypes
{
SPARC_AT_HWCAP = 16,
SPARC_AT_PAGESZ = 6,
SPARC_AT_CLKTCK = 17,
SPARC_AT_PHDR = 3,
SPARC_AT_PHENT = 4,
SPARC_AT_PHNUM = 5,
SPARC_AT_BASE = 7,
SPARC_AT_FLAGS = 8,
SPARC_AT_ENTRY = 9,
SPARC_AT_UID = 11,
SPARC_AT_EUID = 12,
SPARC_AT_GID = 13,
SPARC_AT_EGID = 14
};
enum hardwareCaps
{
M5_HWCAP_SPARC_FLUSH = 1,
M5_HWCAP_SPARC_STBAR = 2,
M5_HWCAP_SPARC_SWAP = 4,
M5_HWCAP_SPARC_MULDIV = 8,
M5_HWCAP_SPARC_V9 = 16,
//This one should technically only be set
//if there is a cheetah or cheetah_plus tlb,
//but we'll use it all the time
M5_HWCAP_SPARC_ULTRA3 = 32
};
const int64_t hwcap =
M5_HWCAP_SPARC_FLUSH |
M5_HWCAP_SPARC_STBAR |
M5_HWCAP_SPARC_SWAP |
M5_HWCAP_SPARC_MULDIV |
M5_HWCAP_SPARC_V9 |
M5_HWCAP_SPARC_ULTRA3;
//Setup the auxilliary vectors. These will already have
//endian conversion.
auxv.push_back(buildAuxVect(SPARC_AT_EGID, 100));
auxv.push_back(buildAuxVect(SPARC_AT_GID, 100));
auxv.push_back(buildAuxVect(SPARC_AT_EUID, 100));
auxv.push_back(buildAuxVect(SPARC_AT_UID, 100));
//This would work, but the entry point is a protected member
//auxv.push_back(buildAuxVect(SPARC_AT_ENTRY, objFile->entry));
auxv.push_back(buildAuxVect(SPARC_AT_FLAGS, 0));
//This is the address of the elf "interpreter", which I don't
//think we currently set up. It should be set to 0 (I think)
//auxv.push_back(buildAuxVect(SPARC_AT_BASE, 0));
//This is the number of headers which were in the original elf
//file. This information isn't avaibale by this point.
//auxv.push_back(buildAuxVect(SPARC_AT_PHNUM, 3));
//This is the size of a program header entry. This isn't easy
//to compute here.
//auxv.push_back(buildAuxVect(SPARC_AT_PHENT, blah));
//This is should be set to load_addr (whatever that is) +
//e_phoff. I think it's a pointer to the program headers.
//auxv.push_back(buildAuxVect(SPARC_AT_PHDR, blah));
//This should be easy to get right, but I won't set it for now
//auxv.push_back(buildAuxVect(SPARC_AT_CLKTCK, blah));
auxv.push_back(buildAuxVect(SPARC_AT_PAGESZ, SparcISA::VMPageSize));
auxv.push_back(buildAuxVect(SPARC_AT_HWCAP, hwcap));
//Figure out how big the initial stack needs to be
//Each auxilliary vector is two 8 byte words
int aux_data_size = 2 * intSize * auxv.size();
int env_data_size = 0;
for (int i = 0; i < envp.size(); ++i) {
env_data_size += envp[i].size() + 1;
}
int arg_data_size = 0;
for (int i = 0; i < argv.size(); ++i) {
arg_data_size += argv[i].size() + 1;
}
int aux_array_size = intSize * 2 * (auxv.size() + 1);
int argv_array_size = intSize * (argv.size() + 1);
int envp_array_size = intSize * (envp.size() + 1);
int argc_size = intSize;
int window_save_size = intSize * 16;
int info_block_size =
(aux_data_size +
env_data_size +
arg_data_size +
~alignmentMask) & alignmentMask;
int info_block_padding =
info_block_size -
aux_data_size -
env_data_size -
arg_data_size;
int space_needed =
info_block_size +
aux_array_size +
envp_array_size +
argv_array_size +
argc_size +
window_save_size;
stack_min = stack_base - space_needed;
stack_min &= alignmentMask;
stack_size = stack_base - stack_min;
// map memory
pTable->allocate(roundDown(stack_min, pageSize),
roundUp(stack_size, pageSize));
// map out initial stack contents
Addr aux_data_base = stack_base - aux_data_size - info_block_padding;
Addr env_data_base = aux_data_base - env_data_size;
Addr arg_data_base = env_data_base - arg_data_size;
Addr auxv_array_base = arg_data_base - aux_array_size;
Addr envp_array_base = auxv_array_base - envp_array_size;
Addr argv_array_base = envp_array_base - argv_array_size;
Addr argc_base = argv_array_base - argc_size;
Addr window_save_base = argc_base - window_save_size;
DPRINTF(Sparc, "The addresses of items on the initial stack:\n");
DPRINTF(Sparc, "0x%x - aux data\n", aux_data_base);
DPRINTF(Sparc, "0x%x - env data\n", env_data_base);
DPRINTF(Sparc, "0x%x - arg data\n", arg_data_base);
DPRINTF(Sparc, "0x%x - auxv array\n", auxv_array_base);
DPRINTF(Sparc, "0x%x - envp array\n", envp_array_base);
DPRINTF(Sparc, "0x%x - argv array\n", argv_array_base);
DPRINTF(Sparc, "0x%x - argc \n", argc_base);
DPRINTF(Sparc, "0x%x - window save\n", window_save_base);
DPRINTF(Sparc, "0x%x - stack min\n", stack_min);
// write contents to stack
uint64_t argc = argv.size();
uint64_t guestArgc = TheISA::htog(argc);
//Copy the aux stuff
for(int x = 0; x < auxv.size(); x++)
{
initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
(uint8_t*)&(auxv[x].a_type), intSize);
initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
(uint8_t*)&(auxv[x].a_val), intSize);
}
//Write out the terminating zeroed auxilliary vector
const uint64_t zero = 0;
initVirtMem->writeBlob(auxv_array_base + 2 * intSize * auxv.size(),
(uint8_t*)&zero, 2 * intSize);
copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
execContexts[0]->setIntReg(ArgumentReg0, argc);
execContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
execContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias);
Addr prog_entry = objFile->entryPoint();
execContexts[0]->setPC(prog_entry);
execContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
execContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
// num_processes++;
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(SparcLiveProcess)
VectorParam<string> cmd;
Param<string> executable;
Param<string> input;
Param<string> output;
VectorParam<string> env;
SimObjectParam<System *> system;
END_DECLARE_SIM_OBJECT_PARAMS(SparcLiveProcess)
BEGIN_INIT_SIM_OBJECT_PARAMS(SparcLiveProcess)
INIT_PARAM(cmd, "command line (executable plus arguments)"),
INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
INIT_PARAM(env, "environment settings"),
INIT_PARAM(system, "system")
END_INIT_SIM_OBJECT_PARAMS(SparcLiveProcess)
CREATE_SIM_OBJECT(SparcLiveProcess)
{
string in = input;
string out = output;
// initialize file descriptors to default: same as simulator
int stdin_fd, stdout_fd, stderr_fd;
if (in == "stdin" || in == "cin")
stdin_fd = STDIN_FILENO;
else
stdin_fd = Process::openInputFile(input);
if (out == "stdout" || out == "cout")
stdout_fd = STDOUT_FILENO;
else if (out == "stderr" || out == "cerr")
stdout_fd = STDERR_FILENO;
else
stdout_fd = Process::openOutputFile(out);
stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
return SparcLiveProcess::create(getInstanceName(), system,
stdin_fd, stdout_fd, stderr_fd,
(string)executable == "" ? cmd[0] : executable,
cmd, env);
}
REGISTER_SIM_OBJECT("SparcLiveProcess", SparcLiveProcess)
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