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authorXusheng <xusheng@vector35.com>2024-11-08 13:29:00 +0800
committerXusheng <xusheng@vector35.com>2024-11-13 18:45:59 +0800
commit8a00fb5b8c1b9c82db5528b288859227a7e35868 (patch)
tree8d240dcd729437064c0c9d254cde37dc2229dd07 /view/elf/elfview.cpp
parent30a0fbb5839b08dc58efe602a5cd19c90fbd4c50 (diff)
Bulk add segments in the binary view to improve performance
Diffstat (limited to 'view/elf/elfview.cpp')
-rw-r--r--view/elf/elfview.cpp43
1 files changed, 15 insertions, 28 deletions
diff --git a/view/elf/elfview.cpp b/view/elf/elfview.cpp
index 8be478f1..fb6942e3 100644
--- a/view/elf/elfview.cpp
+++ b/view/elf/elfview.cpp
@@ -496,38 +496,23 @@ bool ElfView::Init()
m_entryPoint = m_entryPoint + imageBaseAdjustment;
- // Add segments in bulk first
- {
- vector<BNSegmentInfo> segmentsToAdd;
- for (auto& i : m_programHeaders)
- {
- uint64_t adjustedVirtualAddr = i.virtualAddress + imageBaseAdjustment;
- if (i.type == ELF_PT_LOAD) // || i.type == ELF_PT_GNU_RELRO)
- {
- uint32_t flags = 0;
- if (i.flags & 1)
- flags |= SegmentExecutable;
- if (i.flags & 2)
- flags |= SegmentWritable;
- if (i.flags & 4)
- flags |= SegmentReadable;
-
- BNSegmentInfo segmentInfo;
- segmentInfo.start = adjustedVirtualAddr;
- segmentInfo.length = i.memorySize;
- segmentInfo.dataOffset = i.offset;
- segmentInfo.dataLength = i.fileSize;
- segmentInfo.flags = flags;
- segmentsToAdd.push_back(segmentInfo);
- }
- }
- AddAutoSegments(segmentsToAdd);
- }
-
+ BeginBulkAddSegments();
for (auto& i : m_programHeaders)
{
uint64_t adjustedVirtualAddr = i.virtualAddress + imageBaseAdjustment;
+ if (i.type == ELF_PT_LOAD) // || i.type == ELF_PT_GNU_RELRO)
+ {
+ uint32_t flags = 0;
+ if (i.flags & 1)
+ flags |= SegmentExecutable;
+ if (i.flags & 2)
+ flags |= SegmentWritable;
+ if (i.flags & 4)
+ flags |= SegmentReadable;
+ AddAutoSegment(adjustedVirtualAddr, i.memorySize, i.offset, i.fileSize, flags);
+ }
+
// Create sections for the program headers with the standard section names. This will ensure that
// the standard name for sections such as .dynamic will always refer to what the loader actually uses.
if (i.type == ELF_PT_DYNAMIC)
@@ -583,6 +568,8 @@ bool ElfView::Init()
}
}
+ EndBulkAddSegments();
+
// Gather names for the sections
vector<string> sectionNames {""};
for (size_t i = 1; i < m_elfSections.size(); i++)