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Diffstat (limited to 'src/arch/sparc/process.cc')
-rw-r--r--src/arch/sparc/process.cc163
1 files changed, 80 insertions, 83 deletions
diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc
index a6e21977a..ac42ccf64 100644
--- a/src/arch/sparc/process.cc
+++ b/src/arch/sparc/process.cc
@@ -62,44 +62,44 @@ SparcLiveProcess::SparcLiveProcess(LiveProcessParams * params,
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);
- //Initialize these to 0s
+ // Initialize these to 0s
fillStart = 0;
spillStart = 0;
}
-void SparcLiveProcess::handleTrap(int trapNum, ThreadContext *tc)
+void
+SparcLiveProcess::handleTrap(int trapNum, ThreadContext *tc)
{
PCState pc = tc->pcState();
- switch(trapNum)
- {
- case 0x01: //Software breakpoint
+ switch (trapNum) {
+ case 0x01: // Software breakpoint
warn("Software breakpoint encountered at pc %#x.\n", pc.pc());
break;
- case 0x02: //Division by zero
+ case 0x02: // Division by zero
warn("Software signaled a division by zero at pc %#x.\n", pc.pc());
break;
- case 0x03: //Flush window trap
+ case 0x03: // Flush window trap
flushWindows(tc);
break;
- case 0x04: //Clean windows
+ case 0x04: // Clean windows
warn("Ignoring process request for clean register "
"windows at pc %#x.\n", pc.pc());
break;
- case 0x05: //Range check
+ case 0x05: // Range check
warn("Software signaled a range check at pc %#x.\n", pc.pc());
break;
- case 0x06: //Fix alignment
+ case 0x06: // Fix alignment
warn("Ignoring process request for os assisted unaligned accesses "
"at pc %#x.\n", pc.pc());
break;
- case 0x07: //Integer overflow
+ case 0x07: // Integer overflow
warn("Software signaled an integer overflow at pc %#x.\n", pc.pc());
break;
- case 0x32: //Get integer condition codes
+ case 0x32: // Get integer condition codes
warn("Ignoring process request to get the integer condition codes "
"at pc %#x.\n", pc.pc());
break;
- case 0x33: //Set integer condition codes
+ case 0x33: // Set integer condition codes
warn("Ignoring process request to set the integer condition codes "
"at pc %#x.\n", pc.pc());
break;
@@ -114,9 +114,9 @@ SparcLiveProcess::initState()
LiveProcess::initState();
ThreadContext *tc = system->getThreadContext(contextIds[0]);
- //From the SPARC ABI
+ // From the SPARC ABI
- //Setup default FP state
+ // Setup default FP state
tc->setMiscRegNoEffect(MISCREG_FSR, 0);
tc->setMiscRegNoEffect(MISCREG_TICK, 0);
@@ -125,32 +125,32 @@ SparcLiveProcess::initState()
* Register window management registers
*/
- //No windows contain info from other programs
- //tc->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
+ // No windows contain info from other programs
+ // tc->setMiscRegNoEffect(MISCREG_OTHERWIN, 0);
tc->setIntReg(NumIntArchRegs + 6, 0);
- //There are no windows to pop
- //tc->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
+ // There are no windows to pop
+ // tc->setMiscRegNoEffect(MISCREG_CANRESTORE, 0);
tc->setIntReg(NumIntArchRegs + 4, 0);
- //All windows are available to save into
- //tc->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
+ // All windows are available to save into
+ // tc->setMiscRegNoEffect(MISCREG_CANSAVE, NWindows - 2);
tc->setIntReg(NumIntArchRegs + 3, NWindows - 2);
- //All windows are "clean"
- //tc->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
+ // All windows are "clean"
+ // tc->setMiscRegNoEffect(MISCREG_CLEANWIN, NWindows);
tc->setIntReg(NumIntArchRegs + 5, NWindows);
- //Start with register window 0
+ // Start with register window 0
tc->setMiscReg(MISCREG_CWP, 0);
- //Always use spill and fill traps 0
- //tc->setMiscRegNoEffect(MISCREG_WSTATE, 0);
+ // Always use spill and fill traps 0
+ // tc->setMiscRegNoEffect(MISCREG_WSTATE, 0);
tc->setIntReg(NumIntArchRegs + 7, 0);
- //Set the trap level to 0
+ // Set the trap level to 0
tc->setMiscRegNoEffect(MISCREG_TL, 0);
- //Set the ASI register to something fixed
+ // Set the ASI register to something fixed
tc->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
/*
* T1 specific registers
*/
- //Turn on the icache, dcache, dtb translation, and itb translation.
+ // Turn on the icache, dcache, dtb translation, and itb translation.
tc->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 15);
}
@@ -160,7 +160,7 @@ Sparc32LiveProcess::initState()
SparcLiveProcess::initState();
ThreadContext *tc = system->getThreadContext(contextIds[0]);
- //The process runs in user mode with 32 bit addresses
+ // The process runs in user mode with 32 bit addresses
tc->setMiscReg(MISCREG_PSTATE, 0x0a);
argsInit(32 / 8, VMPageSize);
@@ -172,7 +172,7 @@ Sparc64LiveProcess::initState()
SparcLiveProcess::initState();
ThreadContext *tc = system->getThreadContext(contextIds[0]);
- //The process runs in user mode
+ // The process runs in user mode
tc->setMiscReg(MISCREG_PSTATE, 0x02);
argsInit(sizeof(IntReg), VMPageSize);
@@ -189,13 +189,13 @@ SparcLiveProcess::argsInit(int pageSize)
std::vector<auxv_t> auxv;
string filename;
- if(argv.size() < 1)
+ if (argv.size() < 1)
filename = "";
else
filename = argv[0];
- //Even for a 32 bit process, the ABI says we still need to
- //maintain double word alignment of the stack pointer.
+ // 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
@@ -208,9 +208,9 @@ SparcLiveProcess::argsInit(int pageSize)
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
+ // 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
};
@@ -222,17 +222,16 @@ SparcLiveProcess::argsInit(int pageSize)
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.
+ // 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
+ if (elfObject) {
+ // Bits which describe the system hardware capabilities
auxv.push_back(auxv_t(M5_AT_HWCAP, hwcap));
- //The system page size
+ // The system page size
auxv.push_back(auxv_t(M5_AT_PAGESZ, SparcISA::VMPageSize));
- //Defined to be 100 in the kernel source.
- //Frequency at which times() increments
+ // Defined to be 100 in the kernel source.
+ // Frequency at which times() increments
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
@@ -241,30 +240,30 @@ SparcLiveProcess::argsInit(int pageSize)
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(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.
+ // 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(M5_AT_BASE, 0));
- //This is hardwired to 0 in the elf loading code in the kernel
+ // This is hardwired to 0 in the elf loading code in the kernel
auxv.push_back(auxv_t(M5_AT_FLAGS, 0));
- //The entry point to the program
+ // The entry point to the program
auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
- //Different user and group IDs
+ // Different user and group IDs
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
+ // Whether to enable "secure mode" in the executable
auxv.push_back(auxv_t(M5_AT_SECURE, 0));
}
- //Figure out how big the initial stack needs to be
+ // Figure out how big the initial stack needs to be
// 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.
+ // 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;
@@ -276,7 +275,7 @@ SparcLiveProcess::argsInit(int pageSize)
arg_data_size += argv[i].size() + 1;
}
- //The info_block.
+ // The info_block.
int base_info_block_size =
sentry_size + file_name_size + env_data_size + arg_data_size;
@@ -284,7 +283,7 @@ SparcLiveProcess::argsInit(int pageSize)
int info_block_padding = info_block_size - base_info_block_size;
- //Each auxilliary vector is two words
+ // Each auxilliary vector is two words
int aux_array_size = intSize * 2 * (auxv.size() + 1);
int envp_array_size = intSize * (envp.size() + 1);
@@ -293,7 +292,7 @@ SparcLiveProcess::argsInit(int pageSize)
int argc_size = intSize;
int window_save_size = intSize * 16;
- //Figure out the size of the contents of the actual initial frame
+ // Figure out the size of the contents of the actual initial frame
int frame_size =
aux_array_size +
envp_array_size +
@@ -301,8 +300,8 @@ SparcLiveProcess::argsInit(int pageSize)
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.
+ // 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;
@@ -354,24 +353,23 @@ SparcLiveProcess::argsInit(int pageSize)
IntType argc = argv.size();
IntType guestArgc = SparcISA::htog(argc);
- //Write out the sentry void *
+ // Write out the sentry void *
uint64_t sentry_NULL = 0;
initVirtMem->writeBlob(sentry_base,
(uint8_t*)&sentry_NULL, sentry_size);
- //Write the file name
+ // Write the file name
initVirtMem->writeString(file_name_base, filename.c_str());
- //Copy the aux stuff
- for(int x = 0; x < auxv.size(); x++)
- {
+ // 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
+ // Write out the terminating zeroed auxilliary vector
const IntType zero = 0;
initVirtMem->writeBlob(auxv_array_base + intSize * 2 * auxv.size(),
(uint8_t*)&zero, intSize);
@@ -383,17 +381,17 @@ SparcLiveProcess::argsInit(int pageSize)
initVirtMem->writeBlob(argc_base, (uint8_t*)&guestArgc, intSize);
- //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.
+ // 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 + sizeof(MachInst) * numFillInsts;
ThreadContext *tc = system->getThreadContext(contextIds[0]);
- //Set up the thread context to start running the process
- //assert(NumArgumentRegs >= 2);
- //tc->setIntReg(ArgumentReg[0], argc);
- //tc->setIntReg(ArgumentReg[1], argv_array_base);
+ // Set up the thread context to start running the process
+ // 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
@@ -402,7 +400,7 @@ SparcLiveProcess::argsInit(int pageSize)
tc->pcState(objFile->entryPoint());
- //Align the "stack_min" to a page boundary.
+ // Align the "stack_min" to a page boundary.
stack_min = roundDown(stack_min, pageSize);
// num_processes++;
@@ -440,13 +438,12 @@ void Sparc32LiveProcess::flushWindows(ThreadContext *tc)
MiscReg CWP = tc->readMiscReg(MISCREG_CWP);
MiscReg origCWP = CWP;
CWP = (CWP + Cansave + 2) % NWindows;
- while(NWindows - 2 - Cansave != 0)
- {
+ while (NWindows - 2 - Cansave != 0) {
if (Otherwin) {
panic("Otherwin non-zero.\n");
} else {
tc->setMiscReg(MISCREG_CWP, CWP);
- //Do the stores
+ // Do the stores
IntReg sp = tc->readIntReg(StackPointerReg);
for (int index = 16; index < 32; index++) {
uint32_t regVal = tc->readIntReg(index);
@@ -467,7 +464,8 @@ void Sparc32LiveProcess::flushWindows(ThreadContext *tc)
tc->setMiscReg(MISCREG_CWP, origCWP);
}
-void Sparc64LiveProcess::flushWindows(ThreadContext *tc)
+void
+Sparc64LiveProcess::flushWindows(ThreadContext *tc)
{
IntReg Cansave = tc->readIntReg(NumIntArchRegs + 3);
IntReg Canrestore = tc->readIntReg(NumIntArchRegs + 4);
@@ -475,13 +473,12 @@ void Sparc64LiveProcess::flushWindows(ThreadContext *tc)
MiscReg CWP = tc->readMiscReg(MISCREG_CWP);
MiscReg origCWP = CWP;
CWP = (CWP + Cansave + 2) % NWindows;
- while(NWindows - 2 - Cansave != 0)
- {
+ while (NWindows - 2 - Cansave != 0) {
if (Otherwin) {
panic("Otherwin non-zero.\n");
} else {
tc->setMiscReg(MISCREG_CWP, CWP);
- //Do the stores
+ // Do the stores
IntReg sp = tc->readIntReg(StackPointerReg);
for (int index = 16; index < 32; index++) {
IntReg regVal = tc->readIntReg(index);
@@ -541,7 +538,7 @@ SparcLiveProcess::setSyscallReturn(ThreadContext *tc,
// no error, clear XCC.C
tc->setIntReg(NumIntArchRegs + 2,
tc->readIntReg(NumIntArchRegs + 2) & 0xEE);
- //tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) & 0xEE);
+ // tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) & 0xEE);
IntReg val = return_value.value();
if (bits(tc->readMiscRegNoEffect(
SparcISA::MISCREG_PSTATE), 3, 3)) {
@@ -552,7 +549,7 @@ SparcLiveProcess::setSyscallReturn(ThreadContext *tc,
// got an error, set XCC.C
tc->setIntReg(NumIntArchRegs + 2,
tc->readIntReg(NumIntArchRegs + 2) | 0x11);
- //tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) | 0x11);
+ // tc->setMiscRegNoEffect(MISCREG_CCR, tc->readMiscRegNoEffect(MISCREG_CCR) | 0x11);
IntReg val = -return_value.value();
if (bits(tc->readMiscRegNoEffect(
SparcISA::MISCREG_PSTATE), 3, 3)) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 22:10:57 +0000