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-rw-r--r--arch/sparc/process.cc111
1 files changed, 97 insertions, 14 deletions
diff --git a/arch/sparc/process.cc b/arch/sparc/process.cc
index 44f2c5984..7f2b0d40a 100644
--- a/arch/sparc/process.cc
+++ b/arch/sparc/process.cc
@@ -54,7 +54,7 @@ SparcLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
if (objFile->getArch() != ObjectFile::SPARC)
- fatal("Object file does not match architecture.");
+ 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,
@@ -85,11 +85,11 @@ SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile,
// 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)0x80000000000);
+ 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 = 0x10000;
+ 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);
@@ -135,6 +135,14 @@ SparcLiveProcess::startup()
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)
{
@@ -145,10 +153,75 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
// 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
- int aux_data_size = 0;
- //Figure out the aux_data_size?
+ //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;
@@ -198,8 +271,8 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
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 aux_array_base = arg_data_base - aux_array_size;
- Addr envp_array_base = aux_array_base - envp_array_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;
@@ -208,24 +281,34 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
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 - aux array\n", aux_array_base);
- DPRINTF(Sparc, "0x%x - env array\n", envp_array_base);
- DPRINTF(Sparc, "0x%x - arg array\n", argv_array_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();
-
- //Copy the aux stuff? For now just put in the null vect
+ 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(aux_array_base, (uint8_t*)&zero, 2 * intSize);
+ 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*)&argc, intSize);
+ initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
execContexts[0]->setIntReg(ArgumentReg0, argc);
execContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 07:46:44 +0000