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-rw-r--r--src/arch/alpha/stacktrace.cc518
1 files changed, 260 insertions, 258 deletions
diff --git a/src/arch/alpha/stacktrace.cc b/src/arch/alpha/stacktrace.cc
index d70a4d6dd..c4612e156 100644
--- a/src/arch/alpha/stacktrace.cc
+++ b/src/arch/alpha/stacktrace.cc
@@ -40,329 +40,331 @@
#include "sim/system.hh"
using namespace std;
-using namespace AlphaISA;
-ProcessInfo::ProcessInfo(ThreadContext *_tc)
- : tc(_tc)
+namespace AlphaISA
{
- 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))
- panic("thread info not compiled into kernel\n");
- thread_info_size = vp->readGtoH<int32_t>(addr);
+ if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
+ panic("thread info not compiled into kernel\n");
+ thread_info_size = vp->readGtoH<int32_t>(addr);
- if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
- panic("thread info not compiled into kernel\n");
- task_struct_size = vp->readGtoH<int32_t>(addr);
+ if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
+ panic("thread info not compiled into kernel\n");
+ task_struct_size = vp->readGtoH<int32_t>(addr);
- if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
- panic("thread info not compiled into kernel\n");
- task_off = vp->readGtoH<int32_t>(addr);
+ if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
+ panic("thread info not compiled into kernel\n");
+ task_off = vp->readGtoH<int32_t>(addr);
- if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
- panic("thread info not compiled into kernel\n");
- pid_off = vp->readGtoH<int32_t>(addr);
+ if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
+ panic("thread info not compiled into kernel\n");
+ pid_off = vp->readGtoH<int32_t>(addr);
- if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
- panic("thread info not compiled into kernel\n");
- name_off = vp->readGtoH<int32_t>(addr);
+ if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
+ panic("thread info not compiled into kernel\n");
+ name_off = vp->readGtoH<int32_t>(addr);
- tc->delVirtPort(vp);
-}
-
-Addr
-ProcessInfo::task(Addr ksp) const
-{
- Addr base = ksp & ~0x3fff;
- if (base == ULL(0xfffffc0000000000))
- return 0;
+ tc->delVirtPort(vp);
+ }
- Addr tsk;
+ Addr
+ ProcessInfo::task(Addr ksp) const
+ {
+ Addr base = ksp & ~0x3fff;
+ if (base == ULL(0xfffffc0000000000))
+ return 0;
- VirtualPort *vp;
+ Addr tsk;
- vp = tc->getVirtPort();
- tsk = vp->readGtoH<Addr>(base + task_off);
- tc->delVirtPort(vp);
+ VirtualPort *vp;
- return tsk;
-}
+ vp = tc->getVirtPort();
+ tsk = vp->readGtoH<Addr>(base + task_off);
+ tc->delVirtPort(vp);
-int
-ProcessInfo::pid(Addr ksp) const
-{
- Addr task = this->task(ksp);
- if (!task)
- return -1;
+ return tsk;
+ }
- uint16_t pd;
+ int
+ ProcessInfo::pid(Addr ksp) const
+ {
+ Addr task = this->task(ksp);
+ if (!task)
+ return -1;
- VirtualPort *vp;
+ uint16_t pd;
- vp = tc->getVirtPort();
- pd = vp->readGtoH<uint16_t>(task + pid_off);
- tc->delVirtPort(vp);
+ VirtualPort *vp;
- return pd;
-}
+ vp = tc->getVirtPort();
+ pd = vp->readGtoH<uint16_t>(task + pid_off);
+ tc->delVirtPort(vp);
-string
-ProcessInfo::name(Addr ksp) const
-{
- Addr task = this->task(ksp);
- if (!task)
- return "console";
+ return pd;
+ }
- char comm[256];
- CopyStringOut(tc, comm, task + name_off, sizeof(comm));
- if (!comm[0])
- return "startup";
+ string
+ ProcessInfo::name(Addr ksp) const
+ {
+ Addr task = this->task(ksp);
+ if (!task)
+ return "console";
- return comm;
-}
+ char comm[256];
+ CopyStringOut(tc, comm, task + name_off, sizeof(comm));
+ if (!comm[0])
+ return "startup";
-StackTrace::StackTrace()
- : tc(0), stack(64)
-{
-}
+ return comm;
+ }
-StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
- : tc(0), stack(64)
-{
- trace(_tc, inst);
-}
+ StackTrace::StackTrace()
+ : tc(0), stack(64)
+ {
+ }
-StackTrace::~StackTrace()
-{
-}
+ StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
+ : tc(0), stack(64)
+ {
+ trace(_tc, inst);
+ }
-void
-StackTrace::trace(ThreadContext *_tc, bool is_call)
-{
- tc = _tc;
+ StackTrace::~StackTrace()
+ {
+ }
- bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
+ void
+ StackTrace::trace(ThreadContext *_tc, bool is_call)
+ {
+ tc = _tc;
- Addr pc = tc->readNextPC();
- bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
- pc <= tc->getSystemPtr()->kernelEnd;
+ bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0;
- if (usermode) {
- stack.push_back(user);
- return;
- }
+ Addr pc = tc->readNextPC();
+ bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
+ pc <= tc->getSystemPtr()->kernelEnd;
- if (!kernel) {
- stack.push_back(console);
- return;
- }
+ if (usermode) {
+ stack.push_back(user);
+ return;
+ }
- SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
- Addr ksp = tc->readIntReg(TheISA::StackPointerReg);
- Addr bottom = ksp & ~0x3fff;
- Addr addr;
+ if (!kernel) {
+ stack.push_back(console);
+ return;
+ }
- if (is_call) {
- if (!symtab->findNearestAddr(pc, addr))
- panic("could not find address %#x", pc);
+ SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
+ Addr ksp = tc->readIntReg(TheISA::StackPointerReg);
+ Addr bottom = ksp & ~0x3fff;
+ Addr addr;
- stack.push_back(addr);
- pc = tc->readPC();
- }
+ if (is_call) {
+ if (!symtab->findNearestAddr(pc, addr))
+ panic("could not find address %#x", pc);
- Addr ra;
- int size;
+ stack.push_back(addr);
+ pc = tc->readPC();
+ }
- while (ksp > bottom) {
- if (!symtab->findNearestAddr(pc, addr))
- panic("could not find symbol for pc=%#x", pc);
- assert(pc >= addr && "symbol botch: callpc < func");
+ Addr ra;
+ int size;
- stack.push_back(addr);
+ while (ksp > bottom) {
+ if (!symtab->findNearestAddr(pc, addr))
+ panic("could not find symbol for pc=%#x", pc);
+ assert(pc >= addr && "symbol botch: callpc < func");
- if (isEntry(addr))
- return;
+ stack.push_back(addr);
- if (decodePrologue(ksp, pc, addr, size, ra)) {
- if (!ra)
+ if (isEntry(addr))
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);
return;
}
- pc = ra;
- ksp += size;
- } else {
- stack.push_back(unknown);
- return;
- }
+ bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
+ pc <= tc->getSystemPtr()->kernelEnd;
+ if (!kernel)
+ return;
- bool kernel = tc->getSystemPtr()->kernelStart <= pc &&
- pc <= tc->getSystemPtr()->kernelEnd;
- if (!kernel)
- return;
+ if (stack.size() >= 1000)
+ panic("unwinding too far");
+ }
- if (stack.size() >= 1000)
- panic("unwinding too far");
+ panic("unwinding too far");
}
- panic("unwinding too far");
-}
+ bool
+ StackTrace::isEntry(Addr addr)
+ {
+ if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12))
+ return true;
-bool
-StackTrace::isEntry(Addr addr)
-{
- if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12))
- return true;
+ if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7))
+ return true;
- if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7))
- return true;
+ if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11))
+ return true;
- if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11))
- return true;
+ if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21))
+ return true;
- if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21))
- return true;
+ if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9))
+ return true;
- if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9))
- return true;
-
- if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2))
- 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::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;
-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 true;
}
- 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;
+ }
-/*
- * 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;
+ }
+
+ /*
+ * 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
-void
-StackTrace::dump()
-{
- StringWrap name(tc->getCpuPtr()->name());
- SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
-
- DPRINTFN("------ Stack ------\n");
-
- string symbol;
- for (int i = 0, size = stack.size(); i < size; ++i) {
- Addr addr = stack[size - i - 1];
- if (addr == user)
- symbol = "user";
- else if (addr == console)
- symbol = "console";
- else if (addr == unknown)
- symbol = "unknown";
- else
- symtab->findSymbol(addr, symbol);
-
- DPRINTFN("%#x: %s\n", addr, symbol);
+ void
+ StackTrace::dump()
+ {
+ StringWrap name(tc->getCpuPtr()->name());
+ SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
+
+ DPRINTFN("------ Stack ------\n");
+
+ string symbol;
+ for (int i = 0, size = stack.size(); i < size; ++i) {
+ Addr addr = stack[size - i - 1];
+ if (addr == user)
+ symbol = "user";
+ else if (addr == console)
+ symbol = "console";
+ else if (addr == unknown)
+ symbol = "unknown";
+ else
+ symtab->findSymbol(addr, symbol);
+
+ DPRINTFN("%#x: %s\n", addr, symbol);
+ }
}
-}
#endif
+}
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