diff options
Diffstat (limited to 'tools/debugserver/source/MacOSX/MachVMRegion.cpp')
| -rw-r--r-- | tools/debugserver/source/MacOSX/MachVMRegion.cpp | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/tools/debugserver/source/MacOSX/MachVMRegion.cpp b/tools/debugserver/source/MacOSX/MachVMRegion.cpp deleted file mode 100644 index 172fc7867b57..000000000000 --- a/tools/debugserver/source/MacOSX/MachVMRegion.cpp +++ /dev/null @@ -1,185 +0,0 @@ -//===-- MachVMRegion.cpp ----------------------------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// Created by Greg Clayton on 6/26/07. -// -//===----------------------------------------------------------------------===// - -#include "MachVMRegion.h" -#include "DNBLog.h" -#include <assert.h> -#include <mach/mach_vm.h> - -MachVMRegion::MachVMRegion(task_t task) - : m_task(task), m_addr(INVALID_NUB_ADDRESS), m_err(), - m_start(INVALID_NUB_ADDRESS), m_size(0), m_depth(-1), - m_curr_protection(0), m_protection_addr(INVALID_NUB_ADDRESS), - m_protection_size(0) { - memset(&m_data, 0, sizeof(m_data)); -} - -MachVMRegion::~MachVMRegion() { - // Restore any original protections and clear our vars - Clear(); -} - -void MachVMRegion::Clear() { - RestoreProtections(); - m_addr = INVALID_NUB_ADDRESS; - m_err.Clear(); - m_start = INVALID_NUB_ADDRESS; - m_size = 0; - m_depth = -1; - memset(&m_data, 0, sizeof(m_data)); - m_curr_protection = 0; - m_protection_addr = INVALID_NUB_ADDRESS; - m_protection_size = 0; -} - -bool MachVMRegion::SetProtections(mach_vm_address_t addr, mach_vm_size_t size, - vm_prot_t prot) { - if (ContainsAddress(addr)) { - mach_vm_size_t prot_size = size; - mach_vm_address_t end_addr = EndAddress(); - if (prot_size > (end_addr - addr)) - prot_size = end_addr - addr; - - if (prot_size > 0) { - if (prot == (m_curr_protection & VM_PROT_ALL)) { - DNBLogThreadedIf(LOG_MEMORY_PROTECTIONS | LOG_VERBOSE, - "MachVMRegion::%s: protections (%u) already " - "sufficient for task 0x%4.4x at address 0x%8.8llx) ", - __FUNCTION__, prot, m_task, (uint64_t)addr); - // Protections are already set as requested... - return true; - } else { - m_err = ::mach_vm_protect(m_task, addr, prot_size, 0, prot); - if (DNBLogCheckLogBit(LOG_MEMORY_PROTECTIONS)) - m_err.LogThreaded("::mach_vm_protect ( task = 0x%4.4x, addr = " - "0x%8.8llx, size = %llu, set_max = %i, prot = %u )", - m_task, (uint64_t)addr, (uint64_t)prot_size, 0, - prot); - if (m_err.Fail()) { - // Try again with the ability to create a copy on write region - m_err = ::mach_vm_protect(m_task, addr, prot_size, 0, - prot | VM_PROT_COPY); - if (DNBLogCheckLogBit(LOG_MEMORY_PROTECTIONS) || m_err.Fail()) - m_err.LogThreaded("::mach_vm_protect ( task = 0x%4.4x, addr = " - "0x%8.8llx, size = %llu, set_max = %i, prot = %u " - ")", - m_task, (uint64_t)addr, (uint64_t)prot_size, 0, - prot | VM_PROT_COPY); - } - if (m_err.Success()) { - m_curr_protection = prot; - m_protection_addr = addr; - m_protection_size = prot_size; - return true; - } - } - } else { - DNBLogThreadedIf(LOG_MEMORY_PROTECTIONS | LOG_VERBOSE, - "%s: Zero size for task 0x%4.4x at address 0x%8.8llx) ", - __FUNCTION__, m_task, (uint64_t)addr); - } - } - return false; -} - -bool MachVMRegion::RestoreProtections() { - if (m_curr_protection != m_data.protection && m_protection_size > 0) { - m_err = ::mach_vm_protect(m_task, m_protection_addr, m_protection_size, 0, - m_data.protection); - if (DNBLogCheckLogBit(LOG_MEMORY_PROTECTIONS) || m_err.Fail()) - m_err.LogThreaded("::mach_vm_protect ( task = 0x%4.4x, addr = 0x%8.8llx, " - "size = %llu, set_max = %i, prot = %u )", - m_task, (uint64_t)m_protection_addr, - (uint64_t)m_protection_size, 0, m_data.protection); - if (m_err.Success()) { - m_protection_size = 0; - m_protection_addr = INVALID_NUB_ADDRESS; - m_curr_protection = m_data.protection; - return true; - } - } else { - m_err.Clear(); - return true; - } - - return false; -} - -bool MachVMRegion::GetRegionForAddress(nub_addr_t addr) { - // Restore any original protections and clear our vars - Clear(); - m_err.Clear(); - m_addr = addr; - m_start = addr; - m_depth = 1024; - mach_msg_type_number_t info_size = kRegionInfoSize; - assert(sizeof(info_size) == 4); - m_err = - ::mach_vm_region_recurse(m_task, &m_start, &m_size, &m_depth, - (vm_region_recurse_info_t)&m_data, &info_size); - - const bool failed = m_err.Fail(); - const bool log_protections = DNBLogCheckLogBit(LOG_MEMORY_PROTECTIONS); - - if (log_protections || failed) - m_err.LogThreaded("::mach_vm_region_recurse ( task = 0x%4.4x, address => " - "0x%8.8llx, size => %llu, nesting_depth => %d, info => " - "%p, infoCnt => %d) addr = 0x%8.8llx ", - m_task, (uint64_t)m_start, (uint64_t)m_size, m_depth, - &m_data, info_size, (uint64_t)addr); - - if (failed) - return false; - if (log_protections) { - DNBLogThreaded("info = { prot = %u, " - "max_prot = %u, " - "inheritance = 0x%8.8x, " - "offset = 0x%8.8llx, " - "user_tag = 0x%8.8x, " - "ref_count = %u, " - "shadow_depth = %u, " - "ext_pager = %u, " - "share_mode = %u, " - "is_submap = %d, " - "behavior = %d, " - "object_id = 0x%8.8x, " - "user_wired_count = 0x%4.4x }", - m_data.protection, m_data.max_protection, m_data.inheritance, - (uint64_t)m_data.offset, m_data.user_tag, m_data.ref_count, - m_data.shadow_depth, m_data.external_pager, - m_data.share_mode, m_data.is_submap, m_data.behavior, - m_data.object_id, m_data.user_wired_count); - } - m_curr_protection = m_data.protection; - - // We make a request for an address and got no error back, but this - // doesn't mean that "addr" is in the range. The data in this object will - // be valid though, so you could see where the next region begins. So we - // return false, yet leave "m_err" with a successfull return code. - return !((addr < m_start) || (addr >= (m_start + m_size))); -} - -uint32_t MachVMRegion::GetDNBPermissions() const { - if (m_addr == INVALID_NUB_ADDRESS || m_start == INVALID_NUB_ADDRESS || - m_size == 0) - return 0; - uint32_t dnb_permissions = 0; - - if ((m_data.protection & VM_PROT_READ) == VM_PROT_READ) - dnb_permissions |= eMemoryPermissionsReadable; - if ((m_data.protection & VM_PROT_WRITE) == VM_PROT_WRITE) - dnb_permissions |= eMemoryPermissionsWritable; - if ((m_data.protection & VM_PROT_EXECUTE) == VM_PROT_EXECUTE) - dnb_permissions |= eMemoryPermissionsExecutable; - return dnb_permissions; -} |