diff options
Diffstat (limited to 'lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp')
| -rw-r--r-- | lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp | 318 |
1 files changed, 152 insertions, 166 deletions
diff --git a/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp b/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp index 3875759..c011c13 100644 --- a/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp +++ b/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp @@ -12,191 +12,177 @@ //===----------------------------------------------------------------------===// #include "MachVMRegion.h" -#include <mach/mach_vm.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(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(); +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; +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; - } - } +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); } - 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); + 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; + } + 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; +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; + 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. - if ((addr < m_start) || (addr >= (m_start + m_size))) - 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); - return true; + 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. + if ((addr < m_start) || (addr >= (m_start + m_size))) + return false; + + return true; } -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; +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; } |