* Ali Saidi
*/
-#include "arch/alpha/isa_traits.hh"
#include "arch/alpha/process.hh"
-#include "base/loader/object_file.hh"
+
+#include "arch/alpha/isa_traits.hh"
#include "base/loader/elf_object.hh"
+#include "base/loader/object_file.hh"
#include "base/misc.hh"
#include "cpu/thread_context.hh"
+#include "debug/Loader.hh"
#include "mem/page_table.hh"
+#include "sim/aux_vector.hh"
#include "sim/byteswap.hh"
#include "sim/process_impl.hh"
+#include "sim/syscall_return.hh"
#include "sim/system.hh"
using namespace AlphaISA;
using namespace std;
-AlphaLiveProcess::AlphaLiveProcess(LiveProcessParams *params,
- ObjectFile *objFile)
- : LiveProcess(params, objFile)
+AlphaProcess::AlphaProcess(ProcessParams *params, ObjectFile *objFile)
+ : Process(params, objFile)
{
- brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
- brk_point = roundUp(brk_point, VMPageSize);
+ Addr brk_point = objFile->dataBase() + objFile->dataSize() +
+ objFile->bssSize();
+ brk_point = roundUp(brk_point, PageBytes);
// Set up stack. On Alpha, stack goes below text section. This
// code should get moved to some architecture-specific spot.
- stack_base = objFile->textBase() - (409600+4096);
+ Addr stack_base = objFile->textBase() - (409600+4096);
+
+ // Set up region for mmaps.
+ Addr mmap_end = 0x10000;
- // Set up region for mmaps. Tru64 seems to start just above 0 and
- // grow up from there.
- mmap_start = mmap_end = 0x10000;
+ Addr max_stack_size = 8 * 1024 * 1024;
// Set pointer for next thread stack. Reserve 8M for main stack.
- next_thread_stack_base = stack_base - (8 * 1024 * 1024);
+ Addr next_thread_stack_base = stack_base - max_stack_size;
+ memState = make_shared<MemState>(brk_point, stack_base, max_stack_size,
+ next_thread_stack_base, mmap_end);
}
void
-AlphaLiveProcess::argsInit(int intSize, int pageSize)
+AlphaProcess::argsInit(int intSize, int pageSize)
{
+ // Patch the ld_bias for dynamic executables.
+ updateBias();
+
objFile->loadSections(initVirtMem);
typedef AuxVector<uint64_t> auxv_t;
std::vector<auxv_t> auxv;
ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
- if(elfObject)
+ if (elfObject)
{
- // modern glibc uses a bunch of auxiliary vectors to set up
+ // modern glibc uses a bunch of auxiliary vectors to set up
// TLS as well as do a bunch of other stuff
// these vectors go on the bottom of the stack, below argc/argv/envp
// pointers but above actual arg strings
// seem to be a problem.
// check out _dl_aux_init() in glibc/elf/dl-support.c for details
// --Lisa
- auxv.push_back(auxv_t(M5_AT_PAGESZ, AlphaISA::VMPageSize));
+ auxv.push_back(auxv_t(M5_AT_PAGESZ, AlphaISA::PageBytes));
auxv.push_back(auxv_t(M5_AT_CLKTCK, 100));
auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable()));
DPRINTF(Loader, "auxv at PHDR %08p\n", elfObject->programHeaderTable());
auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount()));
+ // This is the base address of the ELF interpreter; it should be
+ // zero for static executables or contain the base address for
+ // dynamic executables.
+ auxv.push_back(auxv_t(M5_AT_BASE, getBias()));
auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
auxv.push_back(auxv_t(M5_AT_UID, uid()));
auxv.push_back(auxv_t(M5_AT_EUID, euid()));
}
int space_needed =
- argv_array_size +
- envp_array_size +
+ argv_array_size +
+ envp_array_size +
auxv_array_size +
- arg_data_size +
+ arg_data_size +
env_data_size;
if (space_needed < 32*1024)
space_needed = 32*1024;
// set bottom of stack
- stack_min = stack_base - space_needed;
+ memState->setStackMin(memState->getStackBase() - space_needed);
// align it
- stack_min = roundDown(stack_min, pageSize);
- stack_size = stack_base - stack_min;
+ memState->setStackMin(roundDown(memState->getStackMin(), pageSize));
+ memState->setStackSize(memState->getStackBase() - memState->getStackMin());
// map memory
- pTable->allocate(stack_min, roundUp(stack_size, pageSize));
+ allocateMem(memState->getStackMin(), roundUp(memState->getStackSize(),
+ pageSize));
// map out initial stack contents
- Addr argv_array_base = stack_min + intSize; // room for argc
+ Addr argv_array_base = memState->getStackMin() + intSize; // room for argc
Addr envp_array_base = argv_array_base + argv_array_size;
Addr auxv_array_base = envp_array_base + envp_array_size;
Addr arg_data_base = auxv_array_base + auxv_array_size;
else
panic("Unknown int size");
- initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize);
+ initVirtMem.writeBlob(memState->getStackMin(), (uint8_t*)&argc, intSize);
copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
//Copy the aux stuff
for (vector<auxv_t>::size_type x = 0; x < auxv.size(); x++) {
- initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
+ initVirtMem.writeBlob(auxv_array_base + x * 2 * intSize,
(uint8_t*)&(auxv[x].a_type), intSize);
- initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
+ initVirtMem.writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
(uint8_t*)&(auxv[x].a_val), intSize);
}
setSyscallArg(tc, 0, argc);
setSyscallArg(tc, 1, argv_array_base);
- tc->setIntReg(StackPointerReg, stack_min);
+ tc->setIntReg(StackPointerReg, memState->getStackMin());
- tc->pcState(objFile->entryPoint());
+ tc->pcState(getStartPC());
}
void
-AlphaLiveProcess::setupASNReg()
+AlphaProcess::setupASNReg()
{
ThreadContext *tc = system->getThreadContext(contextIds[0]);
- tc->setMiscRegNoEffect(IPR_DTB_ASN, M5_pid << 57);
+ tc->setMiscRegNoEffect(IPR_DTB_ASN, _pid << 57);
}
void
-AlphaLiveProcess::loadState(Checkpoint *cp)
+AlphaProcess::unserialize(CheckpointIn &cp)
{
- LiveProcess::loadState(cp);
- // need to set up ASN after unserialization since M5_pid value may
+ Process::unserialize(cp);
+ // need to set up ASN after unserialization since _pid value may
// come from checkpoint
setupASNReg();
}
void
-AlphaLiveProcess::initState()
+AlphaProcess::initState()
{
// need to set up ASN before further initialization since init
// will involve writing to virtual memory addresses
setupASNReg();
- LiveProcess::initState();
+ Process::initState();
- argsInit(MachineBytes, VMPageSize);
+ argsInit(MachineBytes, PageBytes);
ThreadContext *tc = system->getThreadContext(contextIds[0]);
tc->setIntReg(GlobalPointerReg, objFile->globalPointer());
}
AlphaISA::IntReg
-AlphaLiveProcess::getSyscallArg(ThreadContext *tc, int &i)
+AlphaProcess::getSyscallArg(ThreadContext *tc, int &i)
{
assert(i < 6);
return tc->readIntReg(FirstArgumentReg + i++);
}
void
-AlphaLiveProcess::setSyscallArg(ThreadContext *tc,
- int i, AlphaISA::IntReg val)
+AlphaProcess::setSyscallArg(ThreadContext *tc, int i, AlphaISA::IntReg val)
{
assert(i < 6);
tc->setIntReg(FirstArgumentReg + i, val);
}
void
-AlphaLiveProcess::setSyscallReturn(ThreadContext *tc,
- SyscallReturn return_value)
+AlphaProcess::setSyscallReturn(ThreadContext *tc, SyscallReturn sysret)
{
// check for error condition. Alpha syscall convention is to
// indicate success/failure in reg a3 (r19) and put the
// return value itself in the standard return value reg (v0).
- if (return_value.successful()) {
+ if (sysret.successful()) {
// no error
tc->setIntReg(SyscallSuccessReg, 0);
- tc->setIntReg(ReturnValueReg, return_value.value());
+ tc->setIntReg(ReturnValueReg, sysret.returnValue());
} else {
// got an error, return details
tc->setIntReg(SyscallSuccessReg, (IntReg)-1);
- tc->setIntReg(ReturnValueReg, -return_value.value());
+ tc->setIntReg(ReturnValueReg, sysret.errnoValue());
}
}
projects / gem5.git / blobdiff