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//===-- AddressRange.cpp --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/AddressRange.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/Section.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Stream.h"
#include "lldb/lldb-defines.h"
#include "llvm/Support/Compiler.h"
#include <memory>
#include <cinttypes>
namespace lldb_private {
class SectionList;
}
using namespace lldb;
using namespace lldb_private;
AddressRange::AddressRange() : m_base_addr() {}
AddressRange::AddressRange(addr_t file_addr, addr_t byte_size,
const SectionList *section_list)
: m_base_addr(file_addr, section_list), m_byte_size(byte_size) {}
AddressRange::AddressRange(const lldb::SectionSP §ion, addr_t offset,
addr_t byte_size)
: m_base_addr(section, offset), m_byte_size(byte_size) {}
AddressRange::AddressRange(const Address &so_addr, addr_t byte_size)
: m_base_addr(so_addr), m_byte_size(byte_size) {}
AddressRange::~AddressRange() = default;
bool AddressRange::Contains(const Address &addr) const {
SectionSP range_sect_sp = GetBaseAddress().GetSection();
SectionSP addr_sect_sp = addr.GetSection();
if (range_sect_sp) {
if (!addr_sect_sp ||
range_sect_sp->GetModule() != addr_sect_sp->GetModule())
return false; // Modules do not match.
} else if (addr_sect_sp) {
return false; // Range has no module but "addr" does because addr has a
// section
}
// Either the modules match, or both have no module, so it is ok to compare
// the file addresses in this case only.
return ContainsFileAddress(addr);
}
bool AddressRange::ContainsFileAddress(const Address &addr) const {
if (addr.GetSection() == m_base_addr.GetSection())
return (addr.GetOffset() - m_base_addr.GetOffset()) < GetByteSize();
addr_t file_base_addr = GetBaseAddress().GetFileAddress();
if (file_base_addr == LLDB_INVALID_ADDRESS)
return false;
addr_t file_addr = addr.GetFileAddress();
if (file_addr == LLDB_INVALID_ADDRESS)
return false;
if (file_base_addr <= file_addr)
return (file_addr - file_base_addr) < GetByteSize();
return false;
}
bool AddressRange::ContainsFileAddress(addr_t file_addr) const {
if (file_addr == LLDB_INVALID_ADDRESS)
return false;
addr_t file_base_addr = GetBaseAddress().GetFileAddress();
if (file_base_addr == LLDB_INVALID_ADDRESS)
return false;
if (file_base_addr <= file_addr)
return (file_addr - file_base_addr) < GetByteSize();
return false;
}
bool AddressRange::ContainsLoadAddress(const Address &addr,
Target *target) const {
if (addr.GetSection() == m_base_addr.GetSection())
return (addr.GetOffset() - m_base_addr.GetOffset()) < GetByteSize();
addr_t load_base_addr = GetBaseAddress().GetLoadAddress(target);
if (load_base_addr == LLDB_INVALID_ADDRESS)
return false;
addr_t load_addr = addr.GetLoadAddress(target);
if (load_addr == LLDB_INVALID_ADDRESS)
return false;
if (load_base_addr <= load_addr)
return (load_addr - load_base_addr) < GetByteSize();
return false;
}
bool AddressRange::ContainsLoadAddress(addr_t load_addr, Target *target) const {
if (load_addr == LLDB_INVALID_ADDRESS)
return false;
addr_t load_base_addr = GetBaseAddress().GetLoadAddress(target);
if (load_base_addr == LLDB_INVALID_ADDRESS)
return false;
if (load_base_addr <= load_addr)
return (load_addr - load_base_addr) < GetByteSize();
return false;
}
bool AddressRange::Extend(const AddressRange &rhs_range) {
addr_t lhs_end_addr = GetBaseAddress().GetFileAddress() + GetByteSize();
addr_t rhs_base_addr = rhs_range.GetBaseAddress().GetFileAddress();
if (!ContainsFileAddress(rhs_range.GetBaseAddress()) &&
lhs_end_addr != rhs_base_addr)
// The ranges don't intersect at all on the right side of this range.
return false;
addr_t rhs_end_addr = rhs_base_addr + rhs_range.GetByteSize();
if (lhs_end_addr >= rhs_end_addr)
// The rhs range totally overlaps this one, nothing to add.
return false;
m_byte_size += rhs_end_addr - lhs_end_addr;
return true;
}
void AddressRange::Clear() {
m_base_addr.Clear();
m_byte_size = 0;
}
bool AddressRange::Dump(Stream *s, Target *target, Address::DumpStyle style,
Address::DumpStyle fallback_style) const {
addr_t vmaddr = LLDB_INVALID_ADDRESS;
int addr_size = sizeof(addr_t);
if (target)
addr_size = target->GetArchitecture().GetAddressByteSize();
bool show_module = false;
switch (style) {
default:
break;
case Address::DumpStyleSectionNameOffset:
case Address::DumpStyleSectionPointerOffset:
s->PutChar('[');
m_base_addr.Dump(s, target, style, fallback_style);
s->PutChar('-');
DumpAddress(s->AsRawOstream(), m_base_addr.GetOffset() + GetByteSize(),
addr_size);
s->PutChar(')');
return true;
break;
case Address::DumpStyleModuleWithFileAddress:
show_module = true;
[[fallthrough]];
case Address::DumpStyleFileAddress:
vmaddr = m_base_addr.GetFileAddress();
break;
case Address::DumpStyleLoadAddress:
vmaddr = m_base_addr.GetLoadAddress(target);
break;
}
if (vmaddr != LLDB_INVALID_ADDRESS) {
if (show_module) {
ModuleSP module_sp(GetBaseAddress().GetModule());
if (module_sp)
s->Printf("%s", module_sp->GetFileSpec().GetFilename().AsCString(
"<Unknown>"));
}
DumpAddressRange(s->AsRawOstream(), vmaddr, vmaddr + GetByteSize(),
addr_size);
return true;
} else if (fallback_style != Address::DumpStyleInvalid) {
return Dump(s, target, fallback_style, Address::DumpStyleInvalid);
}
return false;
}
void AddressRange::DumpDebug(Stream *s) const {
s->Printf("%p: AddressRange section = %p, offset = 0x%16.16" PRIx64
", byte_size = 0x%16.16" PRIx64 "\n",
static_cast<const void *>(this),
static_cast<void *>(m_base_addr.GetSection().get()),
m_base_addr.GetOffset(), GetByteSize());
}
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