using namespace std;
using namespace SparcISA;
+static const int FirstArgumentReg = 8;
-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,
- const std::string &cwd,
- uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid,
- uint64_t _pid, uint64_t _ppid)
- : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
- argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid)
+
+SparcLiveProcess::SparcLiveProcess(LiveProcessParams * params,
+ ObjectFile *objFile, Addr _StackBias)
+ : LiveProcess(params, objFile), StackBias(_StackBias)
{
// XXX all the below need to be updated for SPARC - Ali
{
switch(trapNum)
{
+ case 0x01: //Software breakpoint
+ warn("Software breakpoint encountered at pc %#x.\n", tc->readPC());
+ break;
+ case 0x02: //Division by zero
+ warn("Software signaled a division by zero at pc %#x.\n",
+ tc->readPC());
+ break;
case 0x03: //Flush window trap
- warn("Ignoring request to flush register windows.\n");
+ flushWindows(tc);
+ break;
+ case 0x04: //Clean windows
+ warn("Ignoring process request for clean register "
+ "windows at pc %#x.\n", tc->readPC());
+ break;
+ case 0x05: //Range check
+ warn("Software signaled a range check at pc %#x.\n",
+ tc->readPC());
+ break;
+ case 0x06: //Fix alignment
+ warn("Ignoring process request for os assisted unaligned accesses "
+ "at pc %#x.\n", tc->readPC());
+ break;
+ case 0x07: //Integer overflow
+ warn("Software signaled an integer overflow at pc %#x.\n",
+ tc->readPC());
+ break;
+ case 0x32: //Get integer condition codes
+ warn("Ignoring process request to get the integer condition codes "
+ "at pc %#x.\n", tc->readPC());
+ break;
+ case 0x33: //Set integer condition codes
+ warn("Ignoring process request to set the integer condition codes "
+ "at pc %#x.\n", tc->readPC());
break;
default:
panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum);
}
void
-Sparc32LiveProcess::startup()
+SparcLiveProcess::startup()
{
- argsInit(32 / 8, VMPageSize);
+ Process::startup();
+ ThreadContext *tc = system->getThreadContext(contextIds[0]);
//From the SPARC ABI
- //The process runs in user mode
- threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x02);
-
//Setup default FP state
- threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0);
+ tc->setMiscRegNoEffect(MISCREG_FSR, 0);
+
+ tc->setMiscRegNoEffect(MISCREG_TICK, 0);
- threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0);
- //
/*
* Register window management registers
*/
//No windows contain info from other programs
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
- threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0);
+ //tc->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
+ tc->setIntReg(NumIntArchRegs + 6, 0);
//There are no windows to pop
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
- threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0);
+ //tc->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
+ tc->setIntReg(NumIntArchRegs + 4, 0);
//All windows are available to save into
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
- threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2);
+ //tc->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
+ tc->setIntReg(NumIntArchRegs + 3, NWindows - 2);
//All windows are "clean"
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
- threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows);
+ //tc->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
+ tc->setIntReg(NumIntArchRegs + 5, NWindows);
//Start with register window 0
- threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0);
+ tc->setMiscRegNoEffect(MISCREG_CWP, 0);
//Always use spill and fill traps 0
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
- threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0);
+ //tc->setMiscRegNoEffect(MISCREG_WSTATE, 0);
+ tc->setIntReg(NumIntArchRegs + 7, 0);
//Set the trap level to 0
- threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0);
+ tc->setMiscRegNoEffect(MISCREG_TL, 0);
//Set the ASI register to something fixed
- threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
+ tc->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
+
+ /*
+ * T1 specific registers
+ */
+ //Turn on the icache, dcache, dtb translation, and itb translation.
+ tc->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15);
}
void
-Sparc64LiveProcess::startup()
+Sparc32LiveProcess::startup()
{
- argsInit(sizeof(IntReg), VMPageSize);
+ if (checkpointRestored)
+ return;
- //From the SPARC ABI
-
- //The process runs in user mode
- threadContexts[0]->setMiscReg(MISCREG_PSTATE, 0x02);
+ SparcLiveProcess::startup();
- //Setup default FP state
- threadContexts[0]->setMiscRegNoEffect(MISCREG_FSR, 0);
+ ThreadContext *tc = system->getThreadContext(contextIds[0]);
+ //The process runs in user mode with 32 bit addresses
+ tc->setMiscReg(MISCREG_PSTATE, 0x0a);
- threadContexts[0]->setMiscRegNoEffect(MISCREG_TICK, 0);
- //
- /*
- * Register window management registers
- */
-
- //No windows contain info from other programs
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
- threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0);
- //There are no windows to pop
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
- threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0);
- //All windows are available to save into
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
- threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2);
- //All windows are "clean"
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
- threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows);
- //Start with register window 0
- threadContexts[0]->setMiscRegNoEffect(MISCREG_CWP, 0);
- //Always use spill and fill traps 0
- //threadContexts[0]->setMiscRegNoEffect(MISCREG_WSTATE, 0);
- threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0);
- //Set the trap level to 0
- threadContexts[0]->setMiscRegNoEffect(MISCREG_TL, 0);
- //Set the ASI register to something fixed
- threadContexts[0]->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
+ argsInit(32 / 8, VMPageSize);
}
-M5_32_auxv_t::M5_32_auxv_t(int32_t type, int32_t val)
+void
+Sparc64LiveProcess::startup()
{
- a_type = TheISA::htog(type);
- a_val = TheISA::htog(val);
-}
+ if (checkpointRestored)
+ return;
-M5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val)
-{
- a_type = TheISA::htog(type);
- a_val = TheISA::htog(val);
+ SparcLiveProcess::startup();
+
+ ThreadContext *tc = system->getThreadContext(contextIds[0]);
+ //The process runs in user mode
+ tc->setMiscReg(MISCREG_PSTATE, 0x02);
+
+ argsInit(sizeof(IntReg), VMPageSize);
}
+template<class IntType>
void
-Sparc64LiveProcess::argsInit(int intSize, int pageSize)
+SparcLiveProcess::argsInit(int pageSize)
{
- typedef M5_64_auxv_t auxv_t;
- Process::startup();
+ int intSize = sizeof(IntType);
+
+ typedef AuxVector<IntType> auxv_t;
+
+ std::vector<auxv_t> auxv;
string filename;
if(argv.size() < 1)
else
filename = argv[0];
- Addr alignmentMask = ~(intSize - 1);
+ //Even for a 32 bit process, the ABI says we still need to
+ //maintain double word alignment of the stack pointer.
+ uint64_t align = 16;
// 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,
- SPARC_AT_SECURE = 23
- };
-
enum hardwareCaps
{
M5_HWCAP_SPARC_FLUSH = 1,
M5_HWCAP_SPARC_V9 |
M5_HWCAP_SPARC_ULTRA3;
-
//Setup the auxilliary vectors. These will already have endian conversion.
//Auxilliary vectors are loaded only for elf formatted executables.
ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
if(elfObject)
{
//Bits which describe the system hardware capabilities
- auxv.push_back(auxv_t(SPARC_AT_HWCAP, hwcap));
+ auxv.push_back(auxv_t(M5_AT_HWCAP, hwcap));
//The system page size
- auxv.push_back(auxv_t(SPARC_AT_PAGESZ, SparcISA::VMPageSize));
+ auxv.push_back(auxv_t(M5_AT_PAGESZ, SparcISA::VMPageSize));
//Defined to be 100 in the kernel source.
//Frequency at which times() increments
- auxv.push_back(auxv_t(SPARC_AT_CLKTCK, 100));
+ auxv.push_back(auxv_t(M5_AT_CLKTCK, 100));
// For statically linked executables, this is the virtual address of the
// program header tables if they appear in the executable image
- auxv.push_back(auxv_t(SPARC_AT_PHDR, elfObject->programHeaderTable()));
+ auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable()));
// This is the size of a program header entry from the elf file.
- auxv.push_back(auxv_t(SPARC_AT_PHENT, elfObject->programHeaderSize()));
+ auxv.push_back(auxv_t(M5_AT_PHENT, elfObject->programHeaderSize()));
// This is the number of program headers from the original elf file.
- auxv.push_back(auxv_t(SPARC_AT_PHNUM, elfObject->programHeaderCount()));
+ auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount()));
//This is the address of the elf "interpreter", It should be set
//to 0 for regular executables. It should be something else
//(not sure what) for dynamic libraries.
- auxv.push_back(auxv_t(SPARC_AT_BASE, 0));
+ auxv.push_back(auxv_t(M5_AT_BASE, 0));
//This is hardwired to 0 in the elf loading code in the kernel
- auxv.push_back(auxv_t(SPARC_AT_FLAGS, 0));
+ auxv.push_back(auxv_t(M5_AT_FLAGS, 0));
//The entry point to the program
- auxv.push_back(auxv_t(SPARC_AT_ENTRY, objFile->entryPoint()));
+ auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
//Different user and group IDs
- auxv.push_back(auxv_t(SPARC_AT_UID, uid()));
- auxv.push_back(auxv_t(SPARC_AT_EUID, euid()));
- auxv.push_back(auxv_t(SPARC_AT_GID, gid()));
- auxv.push_back(auxv_t(SPARC_AT_EGID, egid()));
+ auxv.push_back(auxv_t(M5_AT_UID, uid()));
+ auxv.push_back(auxv_t(M5_AT_EUID, euid()));
+ auxv.push_back(auxv_t(M5_AT_GID, gid()));
+ auxv.push_back(auxv_t(M5_AT_EGID, egid()));
//Whether to enable "secure mode" in the executable
- auxv.push_back(auxv_t(SPARC_AT_SECURE, 0));
+ auxv.push_back(auxv_t(M5_AT_SECURE, 0));
}
//Figure out how big the initial stack needs to be
- // The unaccounted for 0 at the top of the stack
- int mysterious_size = intSize;
+ // The unaccounted for 8 byte 0 at the top of the stack
+ int sentry_size = 8;
//This is the name of the file which is present on the initial stack
//It's purpose is to let the user space linker examine the original file.
arg_data_size += argv[i].size() + 1;
}
- //The info_block needs to be padded so it's size is a multiple of the
- //alignment mask. Also, it appears that there needs to be at least some
- //padding, so if the size is already a multiple, we need to increase it
- //anyway.
- int info_block_size =
- (file_name_size +
- env_data_size +
- arg_data_size +
- intSize) & alignmentMask;
-
- int info_block_padding =
- info_block_size -
- file_name_size -
- env_data_size -
- arg_data_size;
-
- //Each auxilliary vector is two 8 byte words
+ //The info_block.
+ int base_info_block_size =
+ sentry_size + file_name_size + env_data_size + arg_data_size;
+
+ int info_block_size = roundUp(base_info_block_size, align);
+
+ int info_block_padding = info_block_size - base_info_block_size;
+
+ //Each auxilliary vector is two words
int aux_array_size = intSize * 2 * (auxv.size() + 1);
int envp_array_size = intSize * (envp.size() + 1);
int argc_size = intSize;
int window_save_size = intSize * 16;
- int space_needed =
- mysterious_size +
- info_block_size +
+ //Figure out the size of the contents of the actual initial frame
+ int frame_size =
aux_array_size +
envp_array_size +
argv_array_size +
argc_size +
window_save_size;
+ //There needs to be padding after the auxiliary vector data so that the
+ //very bottom of the stack is aligned properly.
+ int aligned_partial_size = roundUp(frame_size, align);
+ int aux_padding = aligned_partial_size - frame_size;
+
+ int space_needed =
+ info_block_size +
+ aux_padding +
+ frame_size;
+
stack_min = stack_base - space_needed;
- stack_min &= alignmentMask;
+ stack_min = roundDown(stack_min, align);
stack_size = stack_base - stack_min;
- // map memory
+ // Allocate space for the stack
pTable->allocate(roundDown(stack_min, pageSize),
roundUp(stack_size, pageSize));
// map out initial stack contents
- Addr mysterious_base = stack_base - mysterious_size;
- Addr file_name_base = mysterious_base - file_name_size;
- Addr env_data_base = file_name_base - env_data_size;
- Addr arg_data_base = env_data_base - arg_data_size;
- Addr auxv_array_base = arg_data_base - aux_array_size - info_block_padding;
- 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;
-#ifndef NDEBUG
- // only used in DPRINTF
- Addr window_save_base = argc_base - window_save_size;
+ IntType sentry_base = stack_base - sentry_size;
+ IntType file_name_base = sentry_base - file_name_size;
+ IntType env_data_base = file_name_base - env_data_size;
+ IntType arg_data_base = env_data_base - arg_data_size;
+ IntType auxv_array_base = arg_data_base -
+ info_block_padding - aux_array_size - aux_padding;
+ IntType envp_array_base = auxv_array_base - envp_array_size;
+ IntType argv_array_base = envp_array_base - argv_array_size;
+ IntType argc_base = argv_array_base - argc_size;
+#if TRACING_ON
+ IntType window_save_base = argc_base - window_save_size;
#endif
- DPRINTF(Sparc, "The addresses of items on the initial stack:\n");
- DPRINTF(Sparc, "0x%x - file name\n", file_name_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);
+ DPRINTF(Stack, "The addresses of items on the initial stack:\n");
+ DPRINTF(Stack, "%#x - sentry NULL\n", sentry_base);
+ DPRINTF(Stack, "filename = %s\n", filename);
+ DPRINTF(Stack, "%#x - file name\n", file_name_base);
+ DPRINTF(Stack, "%#x - env data\n", env_data_base);
+ DPRINTF(Stack, "%#x - arg data\n", arg_data_base);
+ DPRINTF(Stack, "%#x - auxv array\n", auxv_array_base);
+ DPRINTF(Stack, "%#x - envp array\n", envp_array_base);
+ DPRINTF(Stack, "%#x - argv array\n", argv_array_base);
+ DPRINTF(Stack, "%#x - argc \n", argc_base);
+ DPRINTF(Stack, "%#x - window save\n", window_save_base);
+ DPRINTF(Stack, "%#x - stack min\n", stack_min);
+
+ assert(window_save_base == stack_min);
// write contents to stack
// figure out argc
- uint64_t argc = argv.size();
- uint64_t guestArgc = TheISA::htog(argc);
+ IntType argc = argv.size();
+ IntType guestArgc = SparcISA::htog(argc);
- //Write out the mysterious 0
- uint64_t mysterious_zero = 0;
- initVirtMem->writeBlob(mysterious_base,
- (uint8_t*)&mysterious_zero, mysterious_size);
+ //Write out the sentry void *
+ uint64_t sentry_NULL = 0;
+ initVirtMem->writeBlob(sentry_base,
+ (uint8_t*)&sentry_NULL, sentry_size);
//Write the file name
initVirtMem->writeString(file_name_base, filename.c_str());
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);
+ const IntType zero = 0;
+ initVirtMem->writeBlob(auxv_array_base + intSize * 2 * auxv.size(),
+ (uint8_t*)&zero, intSize);
+ initVirtMem->writeBlob(auxv_array_base + intSize * (2 * auxv.size() + 1),
+ (uint8_t*)&zero, 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);
- //Stuff the trap handlers into the processes address space.
- //Since the stack grows down and is the highest area in the processes
- //address space, we can put stuff above it and stay out of the way.
- int fillSize = sizeof(MachInst) * numFillInsts;
- int spillSize = sizeof(MachInst) * numSpillInsts;
+ //Set up space for the trap handlers into the processes address space.
+ //Since the stack grows down and there is reserved address space abov
+ //it, we can put stuff above it and stay out of the way.
fillStart = stack_base;
- spillStart = fillStart + fillSize;
- initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler64, fillSize);
- initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler64, spillSize);
+ spillStart = fillStart + sizeof(MachInst) * numFillInsts;
+ ThreadContext *tc = system->getThreadContext(contextIds[0]);
//Set up the thread context to start running the process
- threadContexts[0]->setIntReg(ArgumentReg0, argc);
- threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
- threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias);
+ //assert(NumArgumentRegs >= 2);
+ //tc->setIntReg(ArgumentReg[0], argc);
+ //tc->setIntReg(ArgumentReg[1], argv_array_base);
+ tc->setIntReg(StackPointerReg, stack_min - StackBias);
+
+ // %g1 is a pointer to a function that should be run at exit. Since we
+ // don't have anything like that, it should be set to 0.
+ tc->setIntReg(1, 0);
Addr prog_entry = objFile->entryPoint();
- threadContexts[0]->setPC(prog_entry);
- threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
- threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
+ tc->setPC(prog_entry);
+ tc->setNextPC(prog_entry + sizeof(MachInst));
+ tc->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
//Align the "stack_min" to a page boundary.
stack_min = roundDown(stack_min, pageSize);
}
void
-Sparc32LiveProcess::argsInit(int intSize, int pageSize)
+Sparc64LiveProcess::argsInit(int intSize, int pageSize)
{
- typedef M5_32_auxv_t auxv_t;
- Process::startup();
+ SparcLiveProcess::argsInit<uint64_t>(pageSize);
- string filename;
- if(argv.size() < 1)
- filename = "";
- else
- filename = argv[0];
-
- //Even though this is a 32 bit process, the ABI says we still need to
- //maintain double word alignment of the stack pointer.
- Addr alignmentMask = ~(8 - 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,
- SPARC_AT_SECURE = 23
- };
-
- 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
- };
+ // Stuff the trap handlers into the process address space
+ initVirtMem->writeBlob(fillStart,
+ (uint8_t*)fillHandler64, sizeof(MachInst) * numFillInsts);
+ initVirtMem->writeBlob(spillStart,
+ (uint8_t*)spillHandler64, sizeof(MachInst) * numSpillInsts);
+}
- 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;
+void
+Sparc32LiveProcess::argsInit(int intSize, int pageSize)
+{
+ SparcLiveProcess::argsInit<uint32_t>(pageSize);
+ // Stuff the trap handlers into the process address space
+ initVirtMem->writeBlob(fillStart,
+ (uint8_t*)fillHandler32, sizeof(MachInst) * numFillInsts);
+ initVirtMem->writeBlob(spillStart,
+ (uint8_t*)spillHandler32, sizeof(MachInst) * numSpillInsts);
+}
- //Setup the auxilliary vectors. These will already have endian conversion.
- //Auxilliary vectors are loaded only for elf formatted executables.
- ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
- if(elfObject)
+void Sparc32LiveProcess::flushWindows(ThreadContext *tc)
+{
+ IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3);
+ IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4);
+ IntReg Otherwin = tc->readIntReg(NumIntArchRegs + 6);
+ MiscReg CWP = tc->readMiscReg(MISCREG_CWP);
+ MiscReg origCWP = CWP;
+ CWP = (CWP + Cansave + 2) % NWindows;
+ while(NWindows - 2 - Cansave != 0)
{
- //Bits which describe the system hardware capabilities
- auxv.push_back(auxv_t(SPARC_AT_HWCAP, hwcap));
- //The system page size
- auxv.push_back(auxv_t(SPARC_AT_PAGESZ, SparcISA::VMPageSize));
- //Defined to be 100 in the kernel source.
- //Frequency at which times() increments
- auxv.push_back(auxv_t(SPARC_AT_CLKTCK, 100));
- // For statically linked executables, this is the virtual address of the
- // program header tables if they appear in the executable image
- auxv.push_back(auxv_t(SPARC_AT_PHDR, elfObject->programHeaderTable()));
- // This is the size of a program header entry from the elf file.
- auxv.push_back(auxv_t(SPARC_AT_PHENT, elfObject->programHeaderSize()));
- // This is the number of program headers from the original elf file.
- auxv.push_back(auxv_t(SPARC_AT_PHNUM, elfObject->programHeaderCount()));
- //This is the address of the elf "interpreter", It should be set
- //to 0 for regular executables. It should be something else
- //(not sure what) for dynamic libraries.
- auxv.push_back(auxv_t(SPARC_AT_BASE, 0));
- //This is hardwired to 0 in the elf loading code in the kernel
- auxv.push_back(auxv_t(SPARC_AT_FLAGS, 0));
- //The entry point to the program
- auxv.push_back(auxv_t(SPARC_AT_ENTRY, objFile->entryPoint()));
- //Different user and group IDs
- auxv.push_back(auxv_t(SPARC_AT_UID, uid()));
- auxv.push_back(auxv_t(SPARC_AT_EUID, euid()));
- auxv.push_back(auxv_t(SPARC_AT_GID, gid()));
- auxv.push_back(auxv_t(SPARC_AT_EGID, egid()));
- //Whether to enable "secure mode" in the executable
- auxv.push_back(auxv_t(SPARC_AT_SECURE, 0));
+ if (Otherwin) {
+ panic("Otherwin non-zero.\n");
+ } else {
+ tc->setMiscReg(MISCREG_CWP, CWP);
+ //Do the stores
+ IntReg sp = tc->readIntReg(StackPointerReg);
+ for (int index = 16; index < 32; index++) {
+ uint32_t regVal = tc->readIntReg(index);
+ regVal = htog(regVal);
+ if (!tc->getMemPort()->tryWriteBlob(
+ sp + (index - 16) * 4, (uint8_t *)®Val, 4)) {
+ warn("Failed to save register to the stack when "
+ "flushing windows.\n");
+ }
+ }
+ Canrestore--;
+ Cansave++;
+ CWP = (CWP + 1) % NWindows;
+ }
}
+ tc->setIntReg(NumIntArchRegs + 3, Cansave);
+ tc->setIntReg(NumIntArchRegs + 4, Canrestore);
+ tc->setMiscReg(MISCREG_CWP, origCWP);
+}
- //Figure out how big the initial stack needs to be
-
- // The unaccounted for 8 byte 0 at the top of the stack
- int mysterious_size = 8;
-
- //This is the name of the file which is present on the initial stack
- //It's purpose is to let the user space linker examine the original file.
- int file_name_size = filename.size() + 1;
-
- 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;
- }
-
- //The info_block - This seems to need an pad for some reason.
- int info_block_size =
- (mysterious_size +
- file_name_size +
- env_data_size +
- arg_data_size + intSize);
-
- //Each auxilliary vector is two 4 byte words
- int aux_array_size = intSize * 2 * (auxv.size() + 1);
-
- int envp_array_size = intSize * (envp.size() + 1);
- int argv_array_size = intSize * (argv.size() + 1);
-
- int argc_size = intSize;
- int window_save_size = intSize * 16;
-
- 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
- uint32_t window_save_base = stack_min;
- uint32_t argc_base = window_save_base + window_save_size;
- uint32_t argv_array_base = argc_base + argc_size;
- uint32_t envp_array_base = argv_array_base + argv_array_size;
- uint32_t auxv_array_base = envp_array_base + envp_array_size;
- //The info block is pushed up against the top of the stack, while
- //the rest of the initial stack frame is aligned to an 8 byte boudary.
- uint32_t arg_data_base = stack_base - info_block_size + intSize;
- uint32_t env_data_base = arg_data_base + arg_data_size;
- uint32_t file_name_base = env_data_base + env_data_size;
- uint32_t mysterious_base = file_name_base + file_name_size;
-
- DPRINTF(Sparc, "The addresses of items on the initial stack:\n");
- DPRINTF(Sparc, "0x%x - file name\n", file_name_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
-
- // figure out argc
- uint32_t argc = argv.size();
- uint32_t guestArgc = TheISA::htog(argc);
-
- //Write out the mysterious 0
- uint64_t mysterious_zero = 0;
- initVirtMem->writeBlob(mysterious_base,
- (uint8_t*)&mysterious_zero, mysterious_size);
-
- //Write the file name
- initVirtMem->writeString(file_name_base, filename.c_str());
-
- //Copy the aux stuff
- for(int x = 0; x < auxv.size(); x++)
+void Sparc64LiveProcess::flushWindows(ThreadContext *tc)
+{
+ IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3);
+ IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4);
+ IntReg Otherwin = tc->readIntReg(NumIntArchRegs + 6);
+ MiscReg CWP = tc->readMiscReg(MISCREG_CWP);
+ MiscReg origCWP = CWP;
+ CWP = (CWP + Cansave + 2) % NWindows;
+ while(NWindows - 2 - Cansave != 0)
{
- 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);
+ if (Otherwin) {
+ panic("Otherwin non-zero.\n");
+ } else {
+ tc->setMiscReg(MISCREG_CWP, CWP);
+ //Do the stores
+ IntReg sp = tc->readIntReg(StackPointerReg);
+ for (int index = 16; index < 32; index++) {
+ IntReg regVal = tc->readIntReg(index);
+ regVal = htog(regVal);
+ if (!tc->getMemPort()->tryWriteBlob(
+ sp + 2047 + (index - 16) * 8, (uint8_t *)®Val, 8)) {
+ warn("Failed to save register to the stack when "
+ "flushing windows.\n");
+ }
+ }
+ Canrestore--;
+ Cansave++;
+ CWP = (CWP + 1) % NWindows;
+ }
}
- //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);
+ tc->setIntReg(NumIntArchRegs + 3, Cansave);
+ tc->setIntReg(NumIntArchRegs + 4, Canrestore);
+ tc->setMiscReg(MISCREG_CWP, origCWP);
+}
- //Stuff the trap handlers into the processes address space.
- //Since the stack grows down and is the highest area in the processes
- //address space, we can put stuff above it and stay out of the way.
- int fillSize = sizeof(MachInst) * numFillInsts;
- int spillSize = sizeof(MachInst) * numSpillInsts;
- fillStart = stack_base;
- spillStart = fillStart + fillSize;
- initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler32, fillSize);
- initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler32, spillSize);
+IntReg
+Sparc32LiveProcess::getSyscallArg(ThreadContext *tc, int i)
+{
+ assert(i < 6);
+ return bits(tc->readIntReg(FirstArgumentReg + i), 31, 0);
+}
- //Set up the thread context to start running the process
- //threadContexts[0]->setIntReg(ArgumentReg0, argc);
- //threadContexts[0]->setIntReg(ArgumentReg1, argv_array_base);
- threadContexts[0]->setIntReg(StackPointerReg, stack_min);
+void
+Sparc32LiveProcess::setSyscallArg(ThreadContext *tc, int i, IntReg val)
+{
+ assert(i < 6);
+ tc->setIntReg(FirstArgumentReg + i, bits(val, 31, 0));
+}
- uint32_t prog_entry = objFile->entryPoint();
- threadContexts[0]->setPC(prog_entry);
- threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
- threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
+IntReg
+Sparc64LiveProcess::getSyscallArg(ThreadContext *tc, int i)
+{
+ assert(i < 6);
+ return tc->readIntReg(FirstArgumentReg + i);
+}
- //Align the "stack_min" to a page boundary.
- stack_min = roundDown(stack_min, pageSize);
+void
+Sparc64LiveProcess::setSyscallArg(ThreadContext *tc, int i, IntReg val)
+{
+ assert(i < 6);
+ tc->setIntReg(FirstArgumentReg + i, val);
+}
-// num_processes++;
+void
+SparcLiveProcess::setSyscallReturn(ThreadContext *tc,
+ SyscallReturn return_value)
+{
+ // check for error condition. SPARC syscall convention is to
+ // indicate success/failure in reg the carry bit of the ccr
+ // and put the return value itself in the standard return value reg ().
+ if (return_value.successful()) {
+ // no error, clear XCC.C
+ tc->setIntReg(NumIntArchRegs + 2,
+ tc->readIntReg(NumIntArchRegs + 2) & 0xEE);
+ //tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) & 0xEE);
+ IntReg val = return_value.value();
+ if (bits(tc->readMiscRegNoEffect(
+ SparcISA::MISCREG_PSTATE), 3, 3)) {
+ val = bits(val, 31, 0);
+ }
+ tc->setIntReg(ReturnValueReg, val);
+ } else {
+ // got an error, set XCC.C
+ tc->setIntReg(NumIntArchRegs + 2,
+ tc->readIntReg(NumIntArchRegs + 2) | 0x11);
+ //tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) | 0x11);
+ IntReg val = -return_value.value();
+ if (bits(tc->readMiscRegNoEffect(
+ SparcISA::MISCREG_PSTATE), 3, 3)) {
+ val = bits(val, 31, 0);
+ }
+ tc->setIntReg(ReturnValueReg, val);
+ }
}
projects / gem5.git / blobdiff