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

[James Henderson via llvm-commits]

================
@@ -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:
+  - Name:            .text1
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    Address:         0x1000
+    AddressAlign:    0x1000
+    Content:         "DEADBEEF"
+    Size:            0x1000
+  - Name:            .text2
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    Address:         0x2000
+    AddressAlign:    0x1000
+    Content:         "32323232"
+    Size:            0x1000
+  - Name:            .text3
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    Address:         0x3000
+    AddressAlign:    0x1000
+    Content:         "c3c3c3c3"
+    Size:            0x1000
+ProgramHeaders:
+  - Type:     PT_LOAD
+    Flags:    [ PF_R ]
+    VAddr:    0x1000
+    FirstSec: .text1
+    LastSec:  .text2
+# CHECK-PLUS:  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz
----------------
jh7370 wrote:

Once you've simplified the YAML as suggested, it would be more readable to order the test something like this, I think:
```
# RUN: ...
# RUN: ...

# CHECK...
# CHECK...

<yaml>
```

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