[elfabi] Add support for reading DT_SONAME from binaries
This change gives the llvm-elfabi tool the ability to read DT_SONAME from a binary ELF file into an ELFStub.
Added:
- DynamicEntries struct for storing dynamic entries that are relevant to elfabi.
- terminatedSubstr() retrieves a null-terminated substring from a StringRef.
- appendToError() appends a string to an error, allowing more specific error messages.
Differential Revision: https://reviews.llvm.org/D55629
llvm-svn: 351361
diff --git a/llvm/test/tools/llvm-elfabi/binary-read-bad-vaddr.test b/llvm/test/tools/llvm-elfabi/binary-read-bad-vaddr.test
new file mode 100644
index 0000000..5dc96df
--- /dev/null
+++ b/llvm/test/tools/llvm-elfabi/binary-read-bad-vaddr.test
@@ -0,0 +1,44 @@
+# RUN: yaml2obj %s > %t
+# RUN: not llvm-elfabi --elf %t --emit-tbe=%t.tbe 2>&1 | FileCheck %s
+
+!ELF
+FileHeader:
+ Class: ELFCLASS64
+ Data: ELFDATA2LSB
+ Type: ET_DYN
+ Machine: EM_X86_64
+Sections:
+ - Name: .dynstr
+ Type: SHT_STRTAB
+ Flags: [ SHF_ALLOC ]
+ Address: 0x1000
+ Content: "00"
+ - Name: .dynamic
+ Type: SHT_DYNAMIC
+ Flags: [ SHF_ALLOC ]
+ Address: 0x1008
+ AddressAlign: 8
+ Content: "0e0000000000000000000000000000000a0000000000000001000000000000000500000000000000600200000000000000000000000000000000000000000000"
+ # DT_SONAME 0
+ # DT_STRSZ 1
+ # DT_STRTAB 0x0260 # Bad vaddr (no PT_LOAD for 0x0000 to 0x0FFF)
+ # DT_NULL 0x0
+ Size: 64
+ Link: .dynstr
+ProgramHeaders:
+ - Type: PT_LOAD
+ Flags: [ PF_R ]
+ VAddr: 0x1000
+ PAddr: 0x1000
+ Align: 8
+ Sections:
+ - Section: .dynstr
+ - Section: .dynamic
+ - Type: PT_DYNAMIC
+ Flags: [ PF_X, PF_R ]
+ VAddr: 0x1008
+ PAddr: 0x1008
+ Sections:
+ - Section: .dynamic
+
+# CHECK: Virtual address is not in any segment when locating .dynstr section contents