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-rw-r--r--src/arch/sparc/process.cc424
1 files changed, 318 insertions, 106 deletions
diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc
index 1e639b9a5..d5a95e0c0 100644
--- a/src/arch/sparc/process.cc
+++ b/src/arch/sparc/process.cc
@@ -30,6 +30,7 @@
*/
#include "arch/sparc/asi.hh"
+#include "arch/sparc/handlers.hh"
#include "arch/sparc/isa_traits.hh"
#include "arch/sparc/process.hh"
#include "arch/sparc/types.hh"
@@ -59,14 +60,6 @@ SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile,
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 = 0xfffff80000000000ULL;
-
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);
@@ -75,10 +68,22 @@ SparcLiveProcess::SparcLiveProcess(const std::string &nm, ObjectFile *objFile,
spillStart = 0;
}
+void SparcLiveProcess::handleTrap(int trapNum, ThreadContext *tc)
+{
+ switch(trapNum)
+ {
+ case 0x03: //Flush window trap
+ warn("Ignoring request to flush register windows.\n");
+ break;
+ default:
+ panic("Unimplemented trap to operating system: trap number %#x.\n", trapNum);
+ }
+}
+
void
-SparcLiveProcess::startup()
+Sparc32LiveProcess::startup()
{
- argsInit(sizeof(IntReg), VMPageSize);
+ argsInit(32 / 8, VMPageSize);
//From the SPARC ABI
@@ -117,94 +122,64 @@ SparcLiveProcess::startup()
threadContexts[0]->setMiscReg(MISCREG_ASI, ASI_PRIMARY);
}
-m5_auxv_t buildAuxVect(int64_t type, int64_t val)
+void
+Sparc64LiveProcess::startup()
{
- m5_auxv_t result;
- result.a_type = TheISA::htog(type);
- result.a_val = TheISA::htog(val);
- return result;
-}
+ argsInit(sizeof(IntReg), VMPageSize);
+
+ //From the SPARC ABI
-//We only use 19 instructions for the trap handlers, but there would be
-//space for 32 in a real SPARC trap table.
-const int numFillInsts = 32;
-const int numSpillInsts = 32;
+ //The process runs in user mode
+ threadContexts[0]->setMiscRegWithEffect(MISCREG_PSTATE, 0x02);
+
+ //Setup default FP state
+ threadContexts[0]->setMiscReg(MISCREG_FSR, 0);
+
+ threadContexts[0]->setMiscReg(MISCREG_TICK, 0);
+ //
+ /*
+ * Register window management registers
+ */
+
+ //No windows contain info from other programs
+ //threadContexts[0]->setMiscReg(MISCREG_OTHERWIN, 0);
+ threadContexts[0]->setIntReg(NumIntArchRegs + 6, 0);
+ //There are no windows to pop
+ //threadContexts[0]->setMiscReg(MISCREG_CANRESTORE, 0);
+ threadContexts[0]->setIntReg(NumIntArchRegs + 4, 0);
+ //All windows are available to save into
+ //threadContexts[0]->setMiscReg(MISCREG_CANSAVE, NWindows - 2);
+ threadContexts[0]->setIntReg(NumIntArchRegs + 3, NWindows - 2);
+ //All windows are "clean"
+ //threadContexts[0]->setMiscReg(MISCREG_CLEANWIN, NWindows);
+ threadContexts[0]->setIntReg(NumIntArchRegs + 5, NWindows);
+ //Start with register window 0
+ threadContexts[0]->setMiscReg(MISCREG_CWP, 0);
+ //Always use spill and fill traps 0
+ //threadContexts[0]->setMiscReg(MISCREG_WSTATE, 0);
+ threadContexts[0]->setIntReg(NumIntArchRegs + 7, 0);
+ //Set the trap level to 0
+ threadContexts[0]->setMiscReg(MISCREG_TL, 0);
+ //Set the ASI register to something fixed
+ threadContexts[0]->setMiscReg(MISCREG_ASI, ASI_PRIMARY);
+}
-MachInst fillHandler[numFillInsts] =
+M5_32_auxv_t::M5_32_auxv_t(int32_t type, int32_t val)
{
- htog(0x87802018), //wr %g0, ASI_AIUP, %asi
- htog(0xe0dba7ff), //ldxa [%sp + BIAS + (0*8)] %asi, %l0
- htog(0xe2dba807), //ldxa [%sp + BIAS + (1*8)] %asi, %l1
- htog(0xe4dba80f), //ldxa [%sp + BIAS + (2*8)] %asi, %l2
- htog(0xe6dba817), //ldxa [%sp + BIAS + (3*8)] %asi, %l3
- htog(0xe8dba81f), //ldxa [%sp + BIAS + (4*8)] %asi, %l4
- htog(0xeadba827), //ldxa [%sp + BIAS + (5*8)] %asi, %l5
- htog(0xecdba82f), //ldxa [%sp + BIAS + (6*8)] %asi, %l6
- htog(0xeedba837), //ldxa [%sp + BIAS + (7*8)] %asi, %l7
- htog(0xf0dba83f), //ldxa [%sp + BIAS + (8*8)] %asi, %i0
- htog(0xf2dba847), //ldxa [%sp + BIAS + (9*8)] %asi, %i1
- htog(0xf4dba84f), //ldxa [%sp + BIAS + (10*8)] %asi, %i2
- htog(0xf6dba857), //ldxa [%sp + BIAS + (11*8)] %asi, %i3
- htog(0xf8dba85f), //ldxa [%sp + BIAS + (12*8)] %asi, %i4
- htog(0xfadba867), //ldxa [%sp + BIAS + (13*8)] %asi, %i5
- htog(0xfcdba86f), //ldxa [%sp + BIAS + (14*8)] %asi, %i6
- htog(0xfedba877), //ldxa [%sp + BIAS + (15*8)] %asi, %i7
- htog(0x83880000), //restored
- htog(0x83F00000), //retry
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000) //illtrap
-};
-
-MachInst spillHandler[numSpillInsts] =
+ a_type = TheISA::htog(type);
+ a_val = TheISA::htog(val);
+}
+
+M5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val)
{
- htog(0x87802018), //wr %g0, ASI_AIUP, %asi
- htog(0xe0f3a7ff), //stxa %l0, [%sp + BIAS + (0*8)] %asi
- htog(0xe2f3a807), //stxa %l1, [%sp + BIAS + (1*8)] %asi
- htog(0xe4f3a80f), //stxa %l2, [%sp + BIAS + (2*8)] %asi
- htog(0xe6f3a817), //stxa %l3, [%sp + BIAS + (3*8)] %asi
- htog(0xe8f3a81f), //stxa %l4, [%sp + BIAS + (4*8)] %asi
- htog(0xeaf3a827), //stxa %l5, [%sp + BIAS + (5*8)] %asi
- htog(0xecf3a82f), //stxa %l6, [%sp + BIAS + (6*8)] %asi
- htog(0xeef3a837), //stxa %l7, [%sp + BIAS + (7*8)] %asi
- htog(0xf0f3a83f), //stxa %i0, [%sp + BIAS + (8*8)] %asi
- htog(0xf2f3a847), //stxa %i1, [%sp + BIAS + (9*8)] %asi
- htog(0xf4f3a84f), //stxa %i2, [%sp + BIAS + (10*8)] %asi
- htog(0xf6f3a857), //stxa %i3, [%sp + BIAS + (11*8)] %asi
- htog(0xf8f3a85f), //stxa %i4, [%sp + BIAS + (12*8)] %asi
- htog(0xfaf3a867), //stxa %i5, [%sp + BIAS + (13*8)] %asi
- htog(0xfcf3a86f), //stxa %i6, [%sp + BIAS + (14*8)] %asi
- htog(0xfef3a877), //stxa %i7, [%sp + BIAS + (15*8)] %asi
- htog(0x81880000), //saved
- htog(0x83F00000), //retry
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000), //illtrap
- htog(0x00000000) //illtrap
-};
+ a_type = TheISA::htog(type);
+ a_val = TheISA::htog(val);
+}
void
-SparcLiveProcess::argsInit(int intSize, int pageSize)
+Sparc64LiveProcess::argsInit(int intSize, int pageSize)
{
+ typedef M5_64_auxv_t auxv_t;
Process::startup();
string filename;
@@ -265,34 +240,34 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
if(elfObject)
{
//Bits which describe the system hardware capabilities
- auxv.push_back(buildAuxVect(SPARC_AT_HWCAP, hwcap));
+ auxv.push_back(auxv_t(SPARC_AT_HWCAP, hwcap));
//The system page size
- auxv.push_back(buildAuxVect(SPARC_AT_PAGESZ, SparcISA::VMPageSize));
+ 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(buildAuxVect(SPARC_AT_CLKTCK, 100));
+ 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(buildAuxVect(SPARC_AT_PHDR, elfObject->programHeaderTable()));
+ 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(buildAuxVect(SPARC_AT_PHENT, elfObject->programHeaderSize()));
+ 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(buildAuxVect(SPARC_AT_PHNUM, elfObject->programHeaderCount()));
+ 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(buildAuxVect(SPARC_AT_BASE, 0));
+ 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(buildAuxVect(SPARC_AT_FLAGS, 0));
+ auxv.push_back(auxv_t(SPARC_AT_FLAGS, 0));
//The entry point to the program
- auxv.push_back(buildAuxVect(SPARC_AT_ENTRY, objFile->entryPoint()));
+ auxv.push_back(auxv_t(SPARC_AT_ENTRY, objFile->entryPoint()));
//Different user and group IDs
- auxv.push_back(buildAuxVect(SPARC_AT_UID, uid()));
- auxv.push_back(buildAuxVect(SPARC_AT_EUID, euid()));
- auxv.push_back(buildAuxVect(SPARC_AT_GID, gid()));
- auxv.push_back(buildAuxVect(SPARC_AT_EGID, egid()));
+ 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(buildAuxVect(SPARC_AT_SECURE, 0));
+ auxv.push_back(auxv_t(SPARC_AT_SECURE, 0));
}
//Figure out how big the initial stack needs to be
@@ -419,8 +394,8 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
int spillSize = sizeof(MachInst) * numSpillInsts;
fillStart = stack_base;
spillStart = fillStart + fillSize;
- initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler, fillSize);
- initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler, spillSize);
+ initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler64, fillSize);
+ initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler64, spillSize);
//Set up the thread context to start running the process
threadContexts[0]->setIntReg(ArgumentReg0, argc);
@@ -437,3 +412,240 @@ SparcLiveProcess::argsInit(int intSize, int pageSize)
// num_processes++;
}
+
+void
+Sparc32LiveProcess::argsInit(int intSize, int pageSize)
+{
+ typedef M5_32_auxv_t auxv_t;
+ Process::startup();
+
+ string filename;
+ if(argv.size() < 1)
+ filename = "";
+ else
+ filename = argv[0];
+
+ 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,
+ 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
+ };
+
+ 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.
+ //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));
+ //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));
+ }
+
+ //Figure out how big the initial stack needs to be
+
+ // The unaccounted for 0 at the top of the stack
+ int mysterious_size = intSize;
+
+ //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 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
+ 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 =
+ mysterious_size +
+ 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 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;
+#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);
+
+ // 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++)
+ {
+ 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, intSize);
+ copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem, intSize);
+
+ 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;
+ fillStart = stack_base;
+ spillStart = fillStart + fillSize;
+ initVirtMem->writeBlob(fillStart, (uint8_t*)fillHandler32, fillSize);
+ initVirtMem->writeBlob(spillStart, (uint8_t*)spillHandler32, spillSize);
+
+ //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);
+
+ 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)));
+
+ //Align the "stack_min" to a page boundary.
+ stack_min = roundDown(stack_min, pageSize);
+
+// num_processes++;
+}
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