Scarfski/tracy
1
0
Fork 0
mirror of https://github.com/wolfpld/tracy.git synced 2026-09-10 12:28:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

callstack: Calculate end address from highest LOAD header

Browse Source 
Headers aren't guaranteed to be sorted in final address order. For
example, from readelf -lW of a .so built with clang:

Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
  PHDR           0x000040 0x0000000000000040 0x0000000000000040 0x000230 0x000230 R   0x8
  LOAD           0x000000 0x0000000000000000 0x0000000000000000 0x5e8274 0x5e8274 R   0x1000
  LOAD           0x5e8280 0x00000000005e9280 0x00000000005e9280 0x51e990 0x51e990 R E 0x1000
  LOAD           0xb06c10 0x0000000000b08c10 0x0000000000b08c10 0x031628 0x0323f0 RW  0x1000
  LOAD           0xb38240 0x0000000000b3b240 0x0000000000b3b240 0x009aa8 0x011c40 RW  0x1000
  DYNAMIC        0xb32270 0x0000000000b34270 0x0000000000b34270 0x000410 0x000410 RW  0x8
  GNU_RELRO      0xb06c10 0x0000000000b08c10 0x0000000000b08c10 0x031628 0x0323f0 R   0x1
  GNU_EH_FRAME   0x4e8360 0x00000000004e8360 0x00000000004e8360 0x029cf4 0x029cf4 R   0x4
  GNU_STACK      0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW  0
  NOTE           0x000270 0x0000000000000270 0x0000000000000270 0x000024 0x000024 R   0x4
This commit is contained in:
Ivan Molodetskikh
2026-06-25 22:09:45 +03:00
parent 7e2e1829c9
commit 5745b489a2
2 changed files with 23 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
public/client/TracyCallstack.cpp
View File

@@ -237,9 +237,18 @@ private:
if( cache->ContainsImage( startAddress ) ) return 0;
const uint32_t headerCount = info->dlpi_phnum;
assert( headerCount > 0);
const auto endAddress = static_cast<uint64_t>( info->dlpi_addr +
info->dlpi_phdr[info->dlpi_phnum - 1].p_vaddr + info->dlpi_phdr[info->dlpi_phnum - 1].p_memsz);
assert( headerCount > 0 );
// headers aren't guaranteed to be in address order; find the max
uint64_t endAddress = startAddress;
for( uint32_t i=0; i<headerCount; i++ )
{
const auto& phdr = info->dlpi_phdr[i];
if( phdr.p_type != PT_LOAD ) continue;
const auto phdrEnd = static_cast<uint64_t>( info->dlpi_addr + phdr.p_vaddr + phdr.p_memsz );
endAddress = std::max( phdrEnd, endAddress );
}
ImageEntry image{};
image.m_startAddress = startAddress;