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Put the ProcessInfo and StackTrace objects into the ISA namespaces.

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--HG--
extra : convert_revision : 1626703583f02a1c9823874290462c1b6bdb6c3c
This commit is contained in:
Gabe Black 2006-11-08 00:52:04 -05:00
parent 16a012e80d
commit f1a55570d3
6 changed files with 683 additions and 670 deletions
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542
src/arch/alpha/stacktrace.cc
View file

@ -40,329 +40,331 @@
#include "sim/system.hh" #include "sim/system.hh"
using namespace std; using namespace std;
using namespace AlphaISA;
ProcessInfo::ProcessInfo(ThreadContext *_tc) namespace AlphaISA
: tc(_tc)
{ {
Addr addr = 0; ProcessInfo::ProcessInfo(ThreadContext *_tc)
: tc(_tc)
{
Addr addr = 0;
VirtualPort *vp; VirtualPort *vp;
vp = tc->getVirtPort(); vp = tc->getVirtPort();
if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
thread_info_size = vp->readGtoH<int32_t>(addr); thread_info_size = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
task_struct_size = vp->readGtoH<int32_t>(addr); task_struct_size = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
task_off = vp->readGtoH<int32_t>(addr); task_off = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
pid_off = vp->readGtoH<int32_t>(addr); pid_off = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
name_off = vp->readGtoH<int32_t>(addr); name_off = vp->readGtoH<int32_t>(addr);
tc->delVirtPort(vp); tc->delVirtPort(vp);
}
Addr
ProcessInfo::task(Addr ksp) const
{
Addr base = ksp & ~0x3fff;
if (base == ULL(0xfffffc0000000000))
return 0;
Addr tsk;
VirtualPort *vp;
vp = tc->getVirtPort();
tsk = vp->readGtoH<Addr>(base + task_off);
tc->delVirtPort(vp);
return tsk;
}
int
ProcessInfo::pid(Addr ksp) const
{
Addr task = this->task(ksp);
if (!task)
return -1;
uint16_t pd;
VirtualPort *vp;
vp = tc->getVirtPort();
pd = vp->readGtoH<uint16_t>(task + pid_off);
tc->delVirtPort(vp);
return pd;
}
string
ProcessInfo::name(Addr ksp) const
{
Addr task = this->task(ksp);
if (!task)
return "console";
char comm[256];
CopyStringOut(tc, comm, task + name_off, sizeof(comm));
if (!comm[0])
return "startup";
return comm;
}
StackTrace::StackTrace()
: tc(0), stack(64)
{
}
StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
: tc(0), stack(64)
{
trace(_tc, inst);
}
StackTrace::~StackTrace()
{
}
void
StackTrace::trace(ThreadContext *_tc, bool is_call)
{
tc = _tc;
bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
Addr pc = tc->readNextPC();
bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
pc <= tc->getSystemPtr()->kernelEnd;
if (usermode) {
stack.push_back(user);
return;
} }
if (!kernel) { Addr
stack.push_back(console); ProcessInfo::task(Addr ksp) const
return; {
Addr base = ksp & ~0x3fff;
if (base == ULL(0xfffffc0000000000))
return 0;
Addr tsk;
VirtualPort *vp;
vp = tc->getVirtPort();
tsk = vp->readGtoH<Addr>(base + task_off);
tc->delVirtPort(vp);
return tsk;
} }
SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; int
Addr ksp = tc->readIntReg(TheISA::StackPointerReg); ProcessInfo::pid(Addr ksp) const
Addr bottom = ksp & ~0x3fff; {
Addr addr; Addr task = this->task(ksp);
if (!task)
return -1;
if (is_call) { uint16_t pd;
if (!symtab->findNearestAddr(pc, addr))
panic("could not find address %#x", pc);
stack.push_back(addr); VirtualPort *vp;
pc = tc->readPC();
vp = tc->getVirtPort();
pd = vp->readGtoH<uint16_t>(task + pid_off);
tc->delVirtPort(vp);
return pd;
} }
Addr ra; string
int size; ProcessInfo::name(Addr ksp) const
{
Addr task = this->task(ksp);
if (!task)
return "console";
while (ksp > bottom) { char comm[256];
if (!symtab->findNearestAddr(pc, addr)) CopyStringOut(tc, comm, task + name_off, sizeof(comm));
panic("could not find symbol for pc=%#x", pc); if (!comm[0])
assert(pc >= addr && "symbol botch: callpc < func"); return "startup";
stack.push_back(addr); return comm;
}
if (isEntry(addr)) StackTrace::StackTrace()
: tc(0), stack(64)
{
}
StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
: tc(0), stack(64)
{
trace(_tc, inst);
}
StackTrace::~StackTrace()
{
}
void
StackTrace::trace(ThreadContext *_tc, bool is_call)
{
tc = _tc;
bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
Addr pc = tc->readNextPC();
bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
pc <= tc->getSystemPtr()->kernelEnd;
if (usermode) {
stack.push_back(user);
return; return;
}
if (decodePrologue(ksp, pc, addr, size, ra)) { if (!kernel) {
if (!ra) stack.push_back(console);
return;
}
SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
Addr ksp = tc->readIntReg(TheISA::StackPointerReg);
Addr bottom = ksp & ~0x3fff;
Addr addr;
if (is_call) {
if (!symtab->findNearestAddr(pc, addr))
panic("could not find address %#x", pc);
stack.push_back(addr);
pc = tc->readPC();
}
Addr ra;
int size;
while (ksp > bottom) {
if (!symtab->findNearestAddr(pc, addr))
panic("could not find symbol for pc=%#x", pc);
assert(pc >= addr && "symbol botch: callpc < func");
stack.push_back(addr);
if (isEntry(addr))
return; return;
if (size <= 0) { if (decodePrologue(ksp, pc, addr, size, ra)) {
if (!ra)
return;
if (size <= 0) {
stack.push_back(unknown);
return;
}
pc = ra;
ksp += size;
} else {
stack.push_back(unknown); stack.push_back(unknown);
return; return;
} }
pc = ra; bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
ksp += size; pc <= tc->getSystemPtr()->kernelEnd;
} else { if (!kernel)
stack.push_back(unknown); return;
return;
if (stack.size() >= 1000)
panic("unwinding too far");
} }
bool kernel = tc->getSystemPtr()->kernelStart <= pc && panic("unwinding too far");
pc <= tc->getSystemPtr()->kernelEnd;
if (!kernel)
return;
if (stack.size() >= 1000)
panic("unwinding too far");
} }
panic("unwinding too far"); bool
} StackTrace::isEntry(Addr addr)
{
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12))
return true;
bool if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7))
StackTrace::isEntry(Addr addr) return true;
{
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12))
return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2))
return true;
return false;
}
bool
StackTrace::decodeStack(MachInst inst, int &disp)
{
// lda $sp, -disp($sp)
//
// Opcode<31:26> == 0x08
// RA<25:21> == 30
// RB<20:16> == 30
// Disp<15:0>
const MachInst mem_mask = 0xffff0000;
const MachInst lda_pattern = 0x23de0000;
const MachInst lda_disp_mask = 0x0000ffff;
// subq $sp, disp, $sp
// addq $sp, disp, $sp
//
// Opcode<31:26> == 0x10
// RA<25:21> == 30
// Lit<20:13>
// One<12> = 1
// Func<11:5> == 0x20 (addq)
// Func<11:5> == 0x29 (subq)
// RC<4:0> == 30
const MachInst intop_mask = 0xffe01fff;
const MachInst addq_pattern = 0x43c0141e;
const MachInst subq_pattern = 0x43c0153e;
const MachInst intop_disp_mask = 0x001fe000;
const int intop_disp_shift = 13;
if ((inst & mem_mask) == lda_pattern)
disp = -sext<16>(inst & lda_disp_mask);
else if ((inst & intop_mask) == addq_pattern)
disp = -int((inst & intop_disp_mask) >> intop_disp_shift);
else if ((inst & intop_mask) == subq_pattern)
disp = int((inst & intop_disp_mask) >> intop_disp_shift);
else
return false;
return true;
}
bool
StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
{
// lda $stq, disp($sp)
//
// Opcode<31:26> == 0x08
// RA<25:21> == ?
// RB<20:16> == 30
// Disp<15:0>
const MachInst stq_mask = 0xfc1f0000;
const MachInst stq_pattern = 0xb41e0000;
const MachInst stq_disp_mask = 0x0000ffff;
const MachInst reg_mask = 0x03e00000;
const int reg_shift = 21;
if ((inst & stq_mask) == stq_pattern) {
reg = (inst & reg_mask) >> reg_shift;
disp = sext<16>(inst & stq_disp_mask);
} else {
return false; return false;
} }
return true; bool
} StackTrace::decodeStack(MachInst inst, int &disp)
{
// lda $sp, -disp($sp)
//
// Opcode<31:26> == 0x08
// RA<25:21> == 30
// RB<20:16> == 30
// Disp<15:0>
const MachInst mem_mask = 0xffff0000;
const MachInst lda_pattern = 0x23de0000;
const MachInst lda_disp_mask = 0x0000ffff;
/* // subq $sp, disp, $sp
* Decode the function prologue for the function we're in, and note // addq $sp, disp, $sp
* which registers are stored where, and how large the stack frame is. //
*/ // Opcode<31:26> == 0x10
bool // RA<25:21> == 30
StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, // Lit<20:13>
int &size, Addr &ra) // One<12> = 1
{ // Func<11:5> == 0x20 (addq)
size = 0; // Func<11:5> == 0x29 (subq)
ra = 0; // RC<4:0> == 30
const MachInst intop_mask = 0xffe01fff;
const MachInst addq_pattern = 0x43c0141e;
const MachInst subq_pattern = 0x43c0153e;
const MachInst intop_disp_mask = 0x001fe000;
const int intop_disp_shift = 13;
for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { if ((inst & mem_mask) == lda_pattern)
MachInst inst; disp = -sext<16>(inst & lda_disp_mask);
CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); else if ((inst & intop_mask) == addq_pattern)
disp = -int((inst & intop_disp_mask) >> intop_disp_shift);
else if ((inst & intop_mask) == subq_pattern)
disp = int((inst & intop_disp_mask) >> intop_disp_shift);
else
return false;
int reg, disp; return true;
if (decodeStack(inst, disp)) { }
if (size) {
// panic("decoding frame size again"); bool
return true; StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
} {
size += disp; // lda $stq, disp($sp)
} else if (decodeSave(inst, reg, disp)) { //
if (!ra && reg == ReturnAddressReg) { // Opcode<31:26> == 0x08
CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); // RA<25:21> == ?
if (!ra) { // RB<20:16> == 30
// panic("no return address value pc=%#x\n", pc); // Disp<15:0>
return false; const MachInst stq_mask = 0xfc1f0000;
const MachInst stq_pattern = 0xb41e0000;
const MachInst stq_disp_mask = 0x0000ffff;
const MachInst reg_mask = 0x03e00000;
const int reg_shift = 21;
if ((inst & stq_mask) == stq_pattern) {
reg = (inst & reg_mask) >> reg_shift;
disp = sext<16>(inst & stq_disp_mask);
} else {
return false;
}
return true;
}
/*
* Decode the function prologue for the function we're in, and note
* which registers are stored where, and how large the stack frame is.
*/
bool
StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
int &size, Addr &ra)
{
size = 0;
ra = 0;
for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) {
MachInst inst;
CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst));
int reg, disp;
if (decodeStack(inst, disp)) {
if (size) {
// panic("decoding frame size again");
return true;
}
size += disp;
} else if (decodeSave(inst, reg, disp)) {
if (!ra && reg == ReturnAddressReg) {
CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr));
if (!ra) {
// panic("no return address value pc=%#x\n", pc);
return false;
}
} }
} }
} }
}
return true; return true;
} }
#if TRACING_ON #if TRACING_ON
void void
StackTrace::dump() StackTrace::dump()
{ {
StringWrap name(tc->getCpuPtr()->name()); StringWrap name(tc->getCpuPtr()->name());
SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
DPRINTFN("------ Stack ------\n"); DPRINTFN("------ Stack ------\n");
string symbol; string symbol;
for (int i = 0, size = stack.size(); i < size; ++i) { for (int i = 0, size = stack.size(); i < size; ++i) {
Addr addr = stack[size - i - 1]; Addr addr = stack[size - i - 1];
if (addr == user) if (addr == user)
symbol = "user"; symbol = "user";
else if (addr == console) else if (addr == console)
symbol = "console"; symbol = "console";
else if (addr == unknown) else if (addr == unknown)
symbol = "unknown"; symbol = "unknown";
else else
symtab->findSymbol(addr, symbol); symtab->findSymbol(addr, symbol);
DPRINTFN("%#x: %s\n", addr, symbol); DPRINTFN("%#x: %s\n", addr, symbol);
}
} }
}
#endif #endif
}

136
src/arch/alpha/stacktrace.hh
View file

@ -35,87 +35,91 @@
#include "cpu/static_inst.hh" #include "cpu/static_inst.hh"
class ThreadContext; class ThreadContext;
class StackTrace;
class ProcessInfo namespace AlphaISA
{ {
private: class StackTrace;
ThreadContext *tc;
int thread_info_size; class ProcessInfo
int task_struct_size;
int task_off;
int pid_off;
int name_off;
public:
ProcessInfo(ThreadContext *_tc);
Addr task(Addr ksp) const;
int pid(Addr ksp) const;
std::string name(Addr ksp) const;
};
class StackTrace
{
protected:
typedef TheISA::MachInst MachInst;
private:
ThreadContext *tc;
std::vector<Addr> stack;
private:
bool isEntry(Addr addr);
bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra);
bool decodeSave(MachInst inst, int &reg, int &disp);
bool decodeStack(MachInst inst, int &disp);
void trace(ThreadContext *tc, bool is_call);
public:
StackTrace();
StackTrace(ThreadContext *tc, StaticInstPtr inst);
~StackTrace();
void clear()
{ {
tc = 0; private:
stack.clear(); ThreadContext *tc;
}
bool valid() const { return tc != NULL; } int thread_info_size;
bool trace(ThreadContext *tc, StaticInstPtr inst); int task_struct_size;
int task_off;
int pid_off;
int name_off;
public: public:
const std::vector<Addr> &getstack() const { return stack; } ProcessInfo(ThreadContext *_tc);
static const int user = 1; Addr task(Addr ksp) const;
static const int console = 2; int pid(Addr ksp) const;
static const int unknown = 3; std::string name(Addr ksp) const;
};
class StackTrace
{
protected:
typedef TheISA::MachInst MachInst;
private:
ThreadContext *tc;
std::vector<Addr> stack;
private:
bool isEntry(Addr addr);
bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra);
bool decodeSave(MachInst inst, int &reg, int &disp);
bool decodeStack(MachInst inst, int &disp);
void trace(ThreadContext *tc, bool is_call);
public:
StackTrace();
StackTrace(ThreadContext *tc, StaticInstPtr inst);
~StackTrace();
void clear()
{
tc = 0;
stack.clear();
}
bool valid() const { return tc != NULL; }
bool trace(ThreadContext *tc, StaticInstPtr inst);
public:
const std::vector<Addr> &getstack() const { return stack; }
static const int user = 1;
static const int console = 2;
static const int unknown = 3;
#if TRACING_ON #if TRACING_ON
private: private:
void dump(); void dump();
public: public:
void dprintf() { if (DTRACE(Stack)) dump(); } void dprintf() { if (DTRACE(Stack)) dump(); }
#else #else
public: public:
void dprintf() {} void dprintf() {}
#endif #endif
}; };
inline bool inline bool
StackTrace::trace(ThreadContext *tc, StaticInstPtr inst) StackTrace::trace(ThreadContext *tc, StaticInstPtr inst)
{ {
if (!inst->isCall() && !inst->isReturn()) if (!inst->isCall() && !inst->isReturn())
return false; return false;
if (valid()) if (valid())
clear(); clear();
trace(tc, !inst->isReturn()); trace(tc, !inst->isReturn());
return true; return true;
}
} }
#endif // __ARCH_ALPHA_STACKTRACE_HH__ #endif // __ARCH_ALPHA_STACKTRACE_HH__

527
src/arch/sparc/stacktrace.cc
View file

@ -40,332 +40,333 @@
#include "sim/system.hh" #include "sim/system.hh"
using namespace std; using namespace std;
using namespace SparcISA; namespace SparcISA
ProcessInfo::ProcessInfo(ThreadContext *_tc)
: tc(_tc)
{ {
Addr addr = 0; ProcessInfo::ProcessInfo(ThreadContext *_tc)
: tc(_tc)
{
Addr addr = 0;
VirtualPort *vp; VirtualPort *vp;
vp = tc->getVirtPort(); vp = tc->getVirtPort();
if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
thread_info_size = vp->readGtoH<int32_t>(addr); thread_info_size = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
task_struct_size = vp->readGtoH<int32_t>(addr); task_struct_size = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
task_off = vp->readGtoH<int32_t>(addr); task_off = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
pid_off = vp->readGtoH<int32_t>(addr); pid_off = vp->readGtoH<int32_t>(addr);
if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr)) if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
panic("thread info not compiled into kernel\n"); panic("thread info not compiled into kernel\n");
name_off = vp->readGtoH<int32_t>(addr); name_off = vp->readGtoH<int32_t>(addr);
tc->delVirtPort(vp); tc->delVirtPort(vp);
} }
Addr Addr
ProcessInfo::task(Addr ksp) const ProcessInfo::task(Addr ksp) const
{ {
Addr base = ksp & ~0x3fff; Addr base = ksp & ~0x3fff;
if (base == ULL(0xfffffc0000000000)) if (base == ULL(0xfffffc0000000000))
return 0; return 0;
Addr tsk; Addr tsk;
VirtualPort *vp; VirtualPort *vp;
vp = tc->getVirtPort(); vp = tc->getVirtPort();
tsk = vp->readGtoH<Addr>(base + task_off); tsk = vp->readGtoH<Addr>(base + task_off);
tc->delVirtPort(vp); tc->delVirtPort(vp);
return tsk; return tsk;
} }
int int
ProcessInfo::pid(Addr ksp) const ProcessInfo::pid(Addr ksp) const
{ {
Addr task = this->task(ksp); Addr task = this->task(ksp);
if (!task) if (!task)
return -1; return -1;
uint16_t pd; uint16_t pd;
VirtualPort *vp; VirtualPort *vp;
vp = tc->getVirtPort(); vp = tc->getVirtPort();
pd = vp->readGtoH<uint16_t>(task + pid_off); pd = vp->readGtoH<uint16_t>(task + pid_off);
tc->delVirtPort(vp); tc->delVirtPort(vp);
return pd; return pd;
} }
string string
ProcessInfo::name(Addr ksp) const ProcessInfo::name(Addr ksp) const
{ {
Addr task = this->task(ksp); Addr task = this->task(ksp);
if (!task) if (!task)
return "console"; return "console";
char comm[256]; char comm[256];
CopyStringOut(tc, comm, task + name_off, sizeof(comm)); CopyStringOut(tc, comm, task + name_off, sizeof(comm));
if (!comm[0]) if (!comm[0])
return "startup"; return "startup";
return comm; return comm;
} }
StackTrace::StackTrace() StackTrace::StackTrace()
: tc(0), stack(64) : tc(0), stack(64)
{ {
} }
StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst) StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
: tc(0), stack(64) : tc(0), stack(64)
{ {
trace(_tc, inst); trace(_tc, inst);
} }
StackTrace::~StackTrace() StackTrace::~StackTrace()
{ {
} }
void void
StackTrace::trace(ThreadContext *_tc, bool is_call) StackTrace::trace(ThreadContext *_tc, bool is_call)
{ {
#if 0 #if 0
tc = _tc; tc = _tc;
bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0; bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
Addr pc = tc->readNextPC(); Addr pc = tc->readNextPC();
bool kernel = tc->getSystemPtr()->kernelStart <= pc && bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
pc <= tc->getSystemPtr()->kernelEnd; pc <= tc->getSystemPtr()->kernelEnd;
if (usermode) { if (usermode) {
stack.push_back(user); stack.push_back(user);
return;
}
if (!kernel) {
stack.push_back(console);
return;
}
SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
Addr ksp = tc->readIntReg(TheISA::StackPointerReg);
Addr bottom = ksp & ~0x3fff;
Addr addr;
if (is_call) {
if (!symtab->findNearestAddr(pc, addr))
panic("could not find address %#x", pc);
stack.push_back(addr);
pc = tc->readPC();
}
Addr ra;
int size;
while (ksp > bottom) {
if (!symtab->findNearestAddr(pc, addr))
panic("could not find symbol for pc=%#x", pc);
assert(pc >= addr && "symbol botch: callpc < func");
stack.push_back(addr);
if (isEntry(addr))
return; return;
}
if (decodePrologue(ksp, pc, addr, size, ra)) { if (!kernel) {
if (!ra) stack.push_back(console);
return;
}
SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
Addr ksp = tc->readIntReg(TheISA::StackPointerReg);
Addr bottom = ksp & ~0x3fff;
Addr addr;
if (is_call) {
if (!symtab->findNearestAddr(pc, addr))
panic("could not find address %#x", pc);
stack.push_back(addr);
pc = tc->readPC();
}
Addr ra;
int size;
while (ksp > bottom) {
if (!symtab->findNearestAddr(pc, addr))
panic("could not find symbol for pc=%#x", pc);
assert(pc >= addr && "symbol botch: callpc < func");
stack.push_back(addr);
if (isEntry(addr))
return; return;
if (size <= 0) { if (decodePrologue(ksp, pc, addr, size, ra)) {
if (!ra)
return;
if (size <= 0) {
stack.push_back(unknown);
return;
}
pc = ra;
ksp += size;
} else {
stack.push_back(unknown); stack.push_back(unknown);
return; return;
} }
pc = ra; bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
ksp += size; pc <= tc->getSystemPtr()->kernelEnd;
} else { if (!kernel)
stack.push_back(unknown); return;
return;
if (stack.size() >= 1000)
panic("unwinding too far");
} }
bool kernel = tc->getSystemPtr()->kernelStart <= pc && panic("unwinding too far");
pc <= tc->getSystemPtr()->kernelEnd; #endif
if (!kernel)
return;
if (stack.size() >= 1000)
panic("unwinding too far");
} }
panic("unwinding too far"); bool
#endif StackTrace::isEntry(Addr addr)
} {
bool
StackTrace::isEntry(Addr addr)
{
#if 0 #if 0
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9))
return true; return true;
if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2)) if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2))
return true; return true;
#endif #endif
return false;
}
bool
StackTrace::decodeStack(MachInst inst, int &disp)
{
// lda $sp, -disp($sp)
//
// Opcode<31:26> == 0x08
// RA<25:21> == 30
// RB<20:16> == 30
// Disp<15:0>
const MachInst mem_mask = 0xffff0000;
const MachInst lda_pattern = 0x23de0000;
const MachInst lda_disp_mask = 0x0000ffff;
// subq $sp, disp, $sp
// addq $sp, disp, $sp
//
// Opcode<31:26> == 0x10
// RA<25:21> == 30
// Lit<20:13>
// One<12> = 1
// Func<11:5> == 0x20 (addq)
// Func<11:5> == 0x29 (subq)
// RC<4:0> == 30
const MachInst intop_mask = 0xffe01fff;
const MachInst addq_pattern = 0x43c0141e;
const MachInst subq_pattern = 0x43c0153e;
const MachInst intop_disp_mask = 0x001fe000;
const int intop_disp_shift = 13;
if ((inst & mem_mask) == lda_pattern)
disp = -sext<16>(inst & lda_disp_mask);
else if ((inst & intop_mask) == addq_pattern)
disp = -int((inst & intop_disp_mask) >> intop_disp_shift);
else if ((inst & intop_mask) == subq_pattern)
disp = int((inst & intop_disp_mask) >> intop_disp_shift);
else
return false;
return true;
}
bool
StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
{
// lda $stq, disp($sp)
//
// Opcode<31:26> == 0x08
// RA<25:21> == ?
// RB<20:16> == 30
// Disp<15:0>
const MachInst stq_mask = 0xfc1f0000;
const MachInst stq_pattern = 0xb41e0000;
const MachInst stq_disp_mask = 0x0000ffff;
const MachInst reg_mask = 0x03e00000;
const int reg_shift = 21;
if ((inst & stq_mask) == stq_pattern) {
reg = (inst & reg_mask) >> reg_shift;
disp = sext<16>(inst & stq_disp_mask);
} else {
return false; return false;
} }
return true; bool
} StackTrace::decodeStack(MachInst inst, int &disp)
{
// lda $sp, -disp($sp)
//
// Opcode<31:26> == 0x08
// RA<25:21> == 30
// RB<20:16> == 30
// Disp<15:0>
const MachInst mem_mask = 0xffff0000;
const MachInst lda_pattern = 0x23de0000;
const MachInst lda_disp_mask = 0x0000ffff;
/* // subq $sp, disp, $sp
* Decode the function prologue for the function we're in, and note // addq $sp, disp, $sp
* which registers are stored where, and how large the stack frame is. //
*/ // Opcode<31:26> == 0x10
bool // RA<25:21> == 30
StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, // Lit<20:13>
int &size, Addr &ra) // One<12> = 1
{ // Func<11:5> == 0x20 (addq)
size = 0; // Func<11:5> == 0x29 (subq)
ra = 0; // RC<4:0> == 30
const MachInst intop_mask = 0xffe01fff;
const MachInst addq_pattern = 0x43c0141e;
const MachInst subq_pattern = 0x43c0153e;
const MachInst intop_disp_mask = 0x001fe000;
const int intop_disp_shift = 13;
for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { if ((inst & mem_mask) == lda_pattern)
MachInst inst; disp = -sext<16>(inst & lda_disp_mask);
CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); else if ((inst & intop_mask) == addq_pattern)
disp = -int((inst & intop_disp_mask) >> intop_disp_shift);
else if ((inst & intop_mask) == subq_pattern)
disp = int((inst & intop_disp_mask) >> intop_disp_shift);
else
return false;
int reg, disp; return true;
if (decodeStack(inst, disp)) { }
if (size) {
// panic("decoding frame size again"); bool
return true; StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
} {
size += disp; // lda $stq, disp($sp)
} else if (decodeSave(inst, reg, disp)) { //
if (!ra && reg == ReturnAddressReg) { // Opcode<31:26> == 0x08
CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); // RA<25:21> == ?
if (!ra) { // RB<20:16> == 30
// panic("no return address value pc=%#x\n", pc); // Disp<15:0>
return false; const MachInst stq_mask = 0xfc1f0000;
const MachInst stq_pattern = 0xb41e0000;
const MachInst stq_disp_mask = 0x0000ffff;
const MachInst reg_mask = 0x03e00000;
const int reg_shift = 21;
if ((inst & stq_mask) == stq_pattern) {
reg = (inst & reg_mask) >> reg_shift;
disp = sext<16>(inst & stq_disp_mask);
} else {
return false;
}
return true;
}
/*
* Decode the function prologue for the function we're in, and note
* which registers are stored where, and how large the stack frame is.
*/
bool
StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
int &size, Addr &ra)
{
size = 0;
ra = 0;
for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) {
MachInst inst;
CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst));
int reg, disp;
if (decodeStack(inst, disp)) {
if (size) {
// panic("decoding frame size again");
return true;
}
size += disp;
} else if (decodeSave(inst, reg, disp)) {
if (!ra && reg == ReturnAddressReg) {
CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr));
if (!ra) {
// panic("no return address value pc=%#x\n", pc);
return false;
}
} }
} }
} }
}
return true; return true;
} }
#if TRACING_ON #if TRACING_ON
void void
StackTrace::dump() StackTrace::dump()
{ {
StringWrap name(tc->getCpuPtr()->name()); StringWrap name(tc->getCpuPtr()->name());
SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
DPRINTFN("------ Stack ------\n"); DPRINTFN("------ Stack ------\n");
string symbol; string symbol;
for (int i = 0, size = stack.size(); i < size; ++i) { for (int i = 0, size = stack.size(); i < size; ++i) {
Addr addr = stack[size - i - 1]; Addr addr = stack[size - i - 1];
if (addr == user) if (addr == user)
symbol = "user"; symbol = "user";
else if (addr == console) else if (addr == console)
symbol = "console"; symbol = "console";
else if (addr == unknown) else if (addr == unknown)
symbol = "unknown"; symbol = "unknown";
else else
symtab->findSymbol(addr, symbol); symtab->findSymbol(addr, symbol);
DPRINTFN("%#x: %s\n", addr, symbol); DPRINTFN("%#x: %s\n", addr, symbol);
}
} }
}
#endif #endif
}

137
src/arch/sparc/stacktrace.hh
View file

@ -35,87 +35,90 @@
#include "cpu/static_inst.hh" #include "cpu/static_inst.hh"
class ThreadContext; class ThreadContext;
class StackTrace; namespace SparcISA
class ProcessInfo
{ {
private: class StackTrace;
ThreadContext *tc;
int thread_info_size; class ProcessInfo
int task_struct_size;
int task_off;
int pid_off;
int name_off;
public:
ProcessInfo(ThreadContext *_tc);
Addr task(Addr ksp) const;
int pid(Addr ksp) const;
std::string name(Addr ksp) const;
};
class StackTrace
{
protected:
typedef TheISA::MachInst MachInst;
private:
ThreadContext *tc;
std::vector<Addr> stack;
private:
bool isEntry(Addr addr);
bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra);
bool decodeSave(MachInst inst, int &reg, int &disp);
bool decodeStack(MachInst inst, int &disp);
void trace(ThreadContext *tc, bool is_call);
public:
StackTrace();
StackTrace(ThreadContext *tc, StaticInstPtr inst);
~StackTrace();
void clear()
{ {
tc = 0; private:
stack.clear(); ThreadContext *tc;
}
bool valid() const { return tc != NULL; } int thread_info_size;
bool trace(ThreadContext *tc, StaticInstPtr inst); int task_struct_size;
int task_off;
int pid_off;
int name_off;
public: public:
const std::vector<Addr> &getstack() const { return stack; } ProcessInfo(ThreadContext *_tc);
static const int user = 1; Addr task(Addr ksp) const;
static const int console = 2; int pid(Addr ksp) const;
static const int unknown = 3; std::string name(Addr ksp) const;
};
class StackTrace
{
protected:
typedef TheISA::MachInst MachInst;
private:
ThreadContext *tc;
std::vector<Addr> stack;
private:
bool isEntry(Addr addr);
bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra);
bool decodeSave(MachInst inst, int &reg, int &disp);
bool decodeStack(MachInst inst, int &disp);
void trace(ThreadContext *tc, bool is_call);
public:
StackTrace();
StackTrace(ThreadContext *tc, StaticInstPtr inst);
~StackTrace();
void clear()
{
tc = 0;
stack.clear();
}
bool valid() const { return tc != NULL; }
bool trace(ThreadContext *tc, StaticInstPtr inst);
public:
const std::vector<Addr> &getstack() const { return stack; }
static const int user = 1;
static const int console = 2;
static const int unknown = 3;
#if TRACING_ON #if TRACING_ON
private: private:
void dump(); void dump();
public: public:
void dprintf() { if (DTRACE(Stack)) dump(); } void dprintf() { if (DTRACE(Stack)) dump(); }
#else #else
public: public:
void dprintf() {} void dprintf() {}
#endif #endif
}; };
inline bool inline bool
StackTrace::trace(ThreadContext *tc, StaticInstPtr inst) StackTrace::trace(ThreadContext *tc, StaticInstPtr inst)
{ {
if (!inst->isCall() && !inst->isReturn()) if (!inst->isCall() && !inst->isReturn())
return false; return false;
if (valid()) if (valid())
clear(); clear();
trace(tc, !inst->isReturn()); trace(tc, !inst->isReturn());
return true; return true;
}
} }
#endif // __ARCH_SPARC_STACKTRACE_HH__ #endif // __ARCH_SPARC_STACKTRACE_HH__

4
src/cpu/profile.hh
View file

@ -33,9 +33,9 @@
#include <map> #include <map>
#include "arch/stacktrace.hh"
#include "cpu/static_inst.hh" #include "cpu/static_inst.hh"
#include "sim/host.hh" #include "sim/host.hh"
#include "arch/stacktrace.hh"
class ThreadContext; class ThreadContext;
@ -66,7 +66,7 @@ class FunctionProfile
const SymbolTable *symtab; const SymbolTable *symtab;
ProfileNode top; ProfileNode top;
std::map<Addr, Counter> pc_count; std::map<Addr, Counter> pc_count;
StackTrace trace; TheISA::StackTrace trace;
public: public:
FunctionProfile(const SymbolTable *symtab); FunctionProfile(const SymbolTable *symtab);

7
src/mem/port_impl.hh
View file

@ -28,6 +28,9 @@
* Authors: Ali Saidi * Authors: Ali Saidi
*/ */
//To get endianness
#include "arch/isa_traits.hh"
#include "mem/port.hh" #include "mem/port.hh"
#include "sim/byteswap.hh" #include "sim/byteswap.hh"
@ -35,7 +38,7 @@ template <typename T>
void void
FunctionalPort::writeHtoG(Addr addr, T d) FunctionalPort::writeHtoG(Addr addr, T d)
{ {
d = htog(d); d = TheISA::htog(d);
writeBlob(addr, (uint8_t*)&d, sizeof(T)); writeBlob(addr, (uint8_t*)&d, sizeof(T));
} }
@ -46,6 +49,6 @@ FunctionalPort::readGtoH(Addr addr)
{ {
T d; T d;
readBlob(addr, (uint8_t*)&d, sizeof(T)); readBlob(addr, (uint8_t*)&d, sizeof(T));
return gtoh(d); return TheISA::gtoh(d);
} }