[llvm] [llvm-objcopy] Add change-section-lma *+/-offset (PR #95431)

[Eleanor Bonnici via llvm-commits]

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@@ -0,0 +1,52 @@
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-objcopy --change-section-lma *+0x20 %t %t2
+# RUN: llvm-readelf -l %t2 | FileCheck %s --check-prefix=CHECK-PLUS
+# RUN: llvm-objcopy --change-section-lma *-0x10 %t2 %t3
+# RUN: llvm-readelf -l %t3 | FileCheck %s --check-prefix=CHECK-MINUS
+# RUN: not llvm-objcopy --change-section-lma .text3=0x5000 %t  2>&1 | FileCheck %s --check-prefix=ERR
+
+!ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_EXEC
+  Machine:         EM_AARCH64
+Sections:
----------------
eleanor-arm wrote:

When I removed the sections the executable generated by yaml2obj was not usable by llvm-objcopy, although it looked quite similar. 

` error: program header with offset 0x1000 and file size 0x2000 goes past the end of the file`



https://github.com/llvm/llvm-project/pull/95431