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threadinfomac.cpp
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threadinfomac.cpp
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
#include "createdump.h"
ThreadInfo::ThreadInfo(CrashInfo& crashInfo, pid_t tid, mach_port_t port) :
m_crashInfo(crashInfo),
m_tid(tid),
m_ppid(0),
m_tgid(0),
m_managed(false),
m_exceptionObject(0),
m_exceptionHResult(0),
m_repeatedFrames(0),
m_port(port)
{
m_beginRepeat = m_frames.end();
m_endRepeat = m_frames.end();
}
ThreadInfo::~ThreadInfo()
{
kern_return_t result = ::mach_port_deallocate(mach_task_self(), m_port);
if (result != KERN_SUCCESS)
{
printf_error("Internal error: ~ThreadInfo: mach_port_deallocate FAILED %s (%x)\n", mach_error_string(result), result);
}
}
bool
ThreadInfo::Initialize()
{
m_ppid = 0;
m_tgid = 0;
#if defined(__x86_64__)
mach_msg_type_number_t stateCount = x86_THREAD_STATE64_COUNT;
kern_return_t result = ::thread_get_state(Port(), x86_THREAD_STATE64, (thread_state_t)&m_gpRegisters, &stateCount);
if (result != KERN_SUCCESS)
{
printf_error("thread_get_state(%x) FAILED %s (%x)\n", m_tid, mach_error_string(result), result);
return false;
}
stateCount = x86_FLOAT_STATE64_COUNT;
result = ::thread_get_state(Port(), x86_FLOAT_STATE64, (thread_state_t)&m_fpRegisters, &stateCount);
if (result != KERN_SUCCESS)
{
printf_error("thread_get_state(%x) FAILED %s (%x)\n", m_tid, mach_error_string(result), result);
return false;
}
#elif defined(__aarch64__)
mach_msg_type_number_t stateCount = ARM_THREAD_STATE64_COUNT;
kern_return_t result = ::thread_get_state(Port(), ARM_THREAD_STATE64, (thread_state_t)&m_gpRegisters, &stateCount);
if (result != KERN_SUCCESS)
{
printf_error("thread_get_state(%x) FAILED %s (%x)\n", m_tid, mach_error_string(result), result);
return false;
}
stateCount = ARM_NEON_STATE64_COUNT;
result = ::thread_get_state(Port(), ARM_NEON_STATE64, (thread_state_t)&m_fpRegisters, &stateCount);
if (result != KERN_SUCCESS)
{
printf_error("thread_get_state(%x) FAILED %s (%x)\n", m_tid, mach_error_string(result), result);
return false;
}
#else
#error Unexpected architecture
#endif
return true;
}
void
ThreadInfo::GetThreadContext(uint32_t flags, CONTEXT* context) const
{
context->ContextFlags = flags;
#if defined(__x86_64__)
if ((flags & CONTEXT_CONTROL) == CONTEXT_CONTROL)
{
context->Rbp = m_gpRegisters.__rbp;
context->Rip = m_gpRegisters.__rip;
context->SegCs = m_gpRegisters.__cs;
context->EFlags = m_gpRegisters.__rflags;
// TODO: get "full" register state for the segment regs
context->SegSs = 0; // m_gpRegisters.__ss;
context->Rsp = m_gpRegisters.__rsp;
}
if ((flags & CONTEXT_INTEGER) == CONTEXT_INTEGER)
{
context->Rdi = m_gpRegisters.__rdi;
context->Rsi = m_gpRegisters.__rsi;
context->Rbx = m_gpRegisters.__rbx;
context->Rdx = m_gpRegisters.__rdx;
context->Rcx = m_gpRegisters.__rcx;
context->Rax = m_gpRegisters.__rax;
context->R8 = m_gpRegisters.__r8;
context->R9 = m_gpRegisters.__r9;
context->R10 = m_gpRegisters.__r10;
context->R11 = m_gpRegisters.__r11;
context->R12 = m_gpRegisters.__r12;
context->R13 = m_gpRegisters.__r13;
context->R14 = m_gpRegisters.__r14;
context->R15 = m_gpRegisters.__r15;
}
if ((flags & CONTEXT_SEGMENTS) == CONTEXT_SEGMENTS)
{
// TODO: get "full" register state for the segment regs
context->SegDs = 0; // m_gpRegisters.__ds;
context->SegEs = 0; // m_gpRegisters.__es;
context->SegFs = m_gpRegisters.__fs;
context->SegGs = m_gpRegisters.__gs;
}
if ((flags & CONTEXT_FLOATING_POINT) == CONTEXT_FLOATING_POINT)
{
context->FltSave.ControlWord = *((unsigned short *)&m_fpRegisters.__fpu_fcw);
context->FltSave.StatusWord = *((unsigned short *)&m_fpRegisters.__fpu_fsw);
context->FltSave.TagWord = m_fpRegisters.__fpu_ftw;
context->FltSave.ErrorOpcode = m_fpRegisters.__fpu_fop;
context->FltSave.ErrorOffset = m_fpRegisters.__fpu_ip;
context->FltSave.ErrorSelector = m_fpRegisters.__fpu_cs;
context->FltSave.DataOffset = m_fpRegisters.__fpu_dp;
context->FltSave.DataSelector = m_fpRegisters.__fpu_ds;
context->FltSave.MxCsr = m_fpRegisters.__fpu_mxcsr;
context->FltSave.MxCsr_Mask = m_fpRegisters.__fpu_mxcsrmask;
assert(sizeof(context->FltSave.FloatRegisters) == sizeof(m_fpRegisters.__fpu_stmm0) * 8);
memcpy(context->FltSave.FloatRegisters, &m_fpRegisters.__fpu_stmm0, sizeof(context->FltSave.FloatRegisters));
assert(sizeof(context->FltSave.XmmRegisters) == sizeof(m_fpRegisters.__fpu_xmm0) * 16);
memcpy(context->FltSave.XmmRegisters, &m_fpRegisters.__fpu_xmm0, sizeof(context->FltSave.XmmRegisters));
}
// TODO: debug registers?
#elif defined(__aarch64__)
if ((flags & CONTEXT_CONTROL) == CONTEXT_CONTROL)
{
context->Fp = arm_thread_state64_get_fp(m_gpRegisters);
context->Lr = (uint64_t)arm_thread_state64_get_lr_fptr(m_gpRegisters);
context->Sp = arm_thread_state64_get_sp(m_gpRegisters);
context->Pc = (uint64_t)arm_thread_state64_get_pc_fptr(m_gpRegisters);
context->Cpsr = m_gpRegisters.__cpsr;
}
if ((flags & CONTEXT_INTEGER) == CONTEXT_INTEGER)
{
assert(sizeof(m_gpRegisters.__x) == (sizeof(context->X)));
memcpy(context->X, m_gpRegisters.__x, sizeof(context->X));
}
if ((flags & CONTEXT_FLOATING_POINT) == CONTEXT_FLOATING_POINT)
{
assert(sizeof(m_fpRegisters.__v) == sizeof(context->V));
memcpy(context->V, m_fpRegisters.__v, sizeof(context->V));
context->Fpcr = m_fpRegisters.__fpcr;
context->Fpsr = m_fpRegisters.__fpsr;
}
#else
#error Platform not supported
#endif
}