diff options
| -rw-r--r-- | src/arch/mips/linux/process.cc | 6 | ||||
| -rw-r--r-- | src/arch/mips/linux/process.hh | 2 | ||||
| -rw-r--r-- | src/arch/mips/process.cc | 81 | ||||
| -rw-r--r-- | src/arch/mips/process.hh | 4 |
4 files changed, 84 insertions, 9 deletions
diff --git a/src/arch/mips/linux/process.cc b/src/arch/mips/linux/process.cc index 0fa3c382a..dde3a4efd 100644 --- a/src/arch/mips/linux/process.cc +++ b/src/arch/mips/linux/process.cc @@ -413,12 +413,6 @@ MipsLinuxProcess::MipsLinuxProcess(LiveProcessParams * params, Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc)) { } -void -MipsLinuxProcess::startup() -{ - MipsLiveProcess::argsInit(MachineBytes, VMPageSize); -} - SyscallDesc* MipsLinuxProcess::getDesc(int callnum) { diff --git a/src/arch/mips/linux/process.hh b/src/arch/mips/linux/process.hh index 5afde2be1..8c45014e0 100644 --- a/src/arch/mips/linux/process.hh +++ b/src/arch/mips/linux/process.hh @@ -43,8 +43,6 @@ class MipsLinuxProcess : public MipsLiveProcess /// Constructor. MipsLinuxProcess(LiveProcessParams * params, ObjectFile *objFile); - void startup(); - virtual SyscallDesc* getDesc(int callnum); /// The target system's hostname. diff --git a/src/arch/mips/process.cc b/src/arch/mips/process.cc index 3e9fb7c20..b9f608922 100644 --- a/src/arch/mips/process.cc +++ b/src/arch/mips/process.cc @@ -32,9 +32,15 @@ #include "arch/mips/isa_traits.hh" #include "arch/mips/process.hh" + #include "base/loader/object_file.hh" #include "base/misc.hh" #include "cpu/thread_context.hh" + +#include "mem/page_table.hh" + +#include "sim/process.hh" +#include "sim/process_impl.hh" #include "sim/system.hh" using namespace std; @@ -62,9 +68,84 @@ MipsLiveProcess::MipsLiveProcess(LiveProcessParams * params, void MipsLiveProcess::startup() { + Process::startup(); + argsInit(MachineBytes, VMPageSize); } +void +MipsLiveProcess::argsInit(int intSize, int pageSize) +{ + // load object file into target memory + objFile->loadSections(initVirtMem); + + // Calculate how much space we need for arg & env arrays. + int argv_array_size = intSize * (argv.size() + 1); + int envp_array_size = intSize * (envp.size() + 1); + int arg_data_size = 0; + for (vector<string>::size_type i = 0; i < argv.size(); ++i) { + arg_data_size += argv[i].size() + 1; + } + int env_data_size = 0; + for (vector<string>::size_type i = 0; i < envp.size(); ++i) { + env_data_size += envp[i].size() + 1; + } + + int space_needed = + argv_array_size + envp_array_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; + // align it + stack_min = roundDown(stack_min, pageSize); + stack_size = stack_base - stack_min; + // map memory + pTable->allocate(stack_min, roundUp(stack_size, pageSize)); + + // map out initial stack contents + // ======== + // NOTE: Using uint32_t hardcodes MIPS32 and not MIPS64 + // even if MIPS64 was intended. This is because the + // copyStringArray function templates on the parameters. + // Elegant way to check intSize and vary between 32/64? + // ======== + uint32_t argv_array_base = stack_min + intSize; // room for argc + uint32_t envp_array_base = argv_array_base + argv_array_size; + uint32_t arg_data_base = envp_array_base + envp_array_size; + uint32_t env_data_base = arg_data_base + arg_data_size; + + // write contents to stack + uint32_t argc = argv.size(); + + if (intSize == 8) + argc = htog((uint64_t)argc); + else if (intSize == 4) + argc = htog((uint32_t)argc); + else + panic("Unknown int size"); + + + initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize); + + copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); + + copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); + + ThreadContext *tc = system->getThreadContext(contextIds[0]); + + setSyscallArg(tc, 0, argc); + setSyscallArg(tc, 1, argv_array_base); + tc->setIntReg(StackPointerReg, stack_min); + + Addr prog_entry = objFile->entryPoint(); + tc->setPC(prog_entry); + tc->setNextPC(prog_entry + sizeof(MachInst)); + tc->setNextNPC(prog_entry + (2 * sizeof(MachInst))); +} + + MipsISA::IntReg MipsLiveProcess::getSyscallArg(ThreadContext *tc, int i) { diff --git a/src/arch/mips/process.hh b/src/arch/mips/process.hh index 87c62330f..b8f4de20a 100644 --- a/src/arch/mips/process.hh +++ b/src/arch/mips/process.hh @@ -45,7 +45,9 @@ class MipsLiveProcess : public LiveProcess protected: MipsLiveProcess(LiveProcessParams * params, ObjectFile *objFile); - virtual void startup(); + void startup(); + + void argsInit(int intSize, int pageSize); public: MipsISA::IntReg getSyscallArg(ThreadContext *tc, int i); |