[llvm-readobj][test] - Refactor mips-st-other.test

[grimar]

Summary

This removes 2 precompiled binaries, adds testing
for STO_* flags missing, refines and renames the test.

[grimar]

• Fix a comment.

[jhenderson]

llvm/test/tools/llvm-readobj/ELF/mips-symbols-stother.test

4

-o

5–6

Is --strict-whitespace important for this test? Do we anticipate spacing differences from other non-MIPS other bits?

37–38

Change this to: "Use a different symbol for STO_MIPS_MIPS16 (0xf0) as it interferes..."

[grimar]

llvm/test/tools/llvm-readobj/ELF/mips-symbols-stother.test

5–6

I think it is important for GNU. As output shows, the Ndx column is misplaced. Here I document this behavior.
We might want to fix it. As far I can see we do not have a test that has sh_other > 0xF
and seems that is why this issue was never noticed. It is only a valid case for MIPS, hence I think it should be here.

For LLVM style perhaps we do not need --strict-whitespace, I've added it just in case and for consistency.

[jhenderson]

llvm/test/tools/llvm-readobj/ELF/mips-symbols-stother.test

5–6

Okay.

[grimar]

• Addressed review comments.

[jhenderson]

LGTM.

[MaskRay]

llvm/test/tools/llvm-readobj/ELF/mips-symbols-stother.test

23

UND looks misaligned.

[MaskRay]

llvm/test/tools/llvm-readobj/ELF/mips-symbols-stother.test

5–6

I think it is important for GNU. As output shows, the Ndx column is misplaced. Here I document this behavior.

If the correct behavior seems straightforward, we can fix it and do not necessarily strictly follow GNU. I've filed bugs about GNU readelf display issues and I find they are willing to fix issues.

llvm/test/tools/llvm-readobj/ELF/mips-st-other.test

-RUN: llvm-readobj --symbols %p/Inputs/st-other.obj.elf-mips \
-RUN:   | FileCheck -check-prefix=MREG %s
-RUN: llvm-readobj --symbols %p/Inputs/st-other.obj.elf-mips16 \
-RUN:   | FileCheck -check-prefix=M16 %s
-
-MREG:      Name: foo
-MREG-NEXT: Value: 0x0
-MREG-NEXT: Size: 0
-MREG-NEXT: Binding: Global
-MREG-NEXT: Type: None
-MREG-NEXT: Other [ (0x29)
-MREG-NEXT:   STO_MIPS_PIC (0x20)
-MREG-NEXT:   STO_MIPS_PLT (0x8)
-MREG-NEXT:   STV_INTERNAL (0x1)
-MREG-NEXT: ]
-
-M16:      Name: foo
-M16-NEXT: Value: 0x0
-M16-NEXT: Size: 0
-M16-NEXT: Binding: Global
-M16-NEXT: Type: None
-M16-NEXT: Other [ (0xF1)
-M16-NEXT:   STO_MIPS_MIPS16 (0xF0)
-M16-NEXT:   STV_INTERNAL (0x1)
-M16-NEXT: ]

llvm/test/tools/llvm-readobj/ELF/mips-symbols-stother.test

+## Check that we are able to dump MIPS STO_* flags correctly when dumping symbols.
+
+# RUN: yaml2obj %s -o %t.o
+# RUN: llvm-readobj --symbols %t.o | FileCheck %s --strict-whitespace --check-prefix=MIPS-LLVM
+# RUN: llvm-readelf --symbols %t.o | FileCheck %s --strict-whitespace --check-prefix=MIPS-GNU
+
+#      MIPS-LLVM:Name: foo
+#      MIPS-LLVM:Other [
+# MIPS-LLVM-NEXT:  STO_MIPS_MICROMIPS (0x80)
+# MIPS-LLVM-NEXT:  STO_MIPS_OPTIONAL (0x4)
+# MIPS-LLVM-NEXT:  STO_MIPS_PIC (0x20)
+# MIPS-LLVM-NEXT:  STO_MIPS_PLT (0x8)
+# MIPS-LLVM-NEXT:]
+
+#      MIPS-LLVM:Name: bar
+#      MIPS-LLVM:Other [
+# MIPS-LLVM-NEXT:  STO_MIPS_MIPS16 (0xF0)
+# MIPS-LLVM-NEXT:]
+
+#      MIPS-GNU:Symbol table '.symtab' contains 3 entries:
+# MIPS-GNU-NEXT:  Num:    Value  Size Type    Bind   Vis                    Ndx Name
+# MIPS-GNU-NEXT:    0: 00000000     0 NOTYPE  LOCAL  DEFAULT                UND
+# MIPS-GNU-NEXT:    1: 00000000     0 NOTYPE  LOCAL  DEFAULT [<other: 0xac>] UND foo
+# MIPS-GNU-NEXT:    2: 00000000     0 NOTYPE  LOCAL  DEFAULT [<other: 0xf0>] UND bar
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS32
+  Data:    ELFDATA2LSB
+  Type:    ET_REL
+  Machine: EM_MIPS
+Symbols:
+  - Name: foo
+    Other: [ STO_MIPS_MICROMIPS, STO_MIPS_PIC,
+             STO_MIPS_PLT, STO_MIPS_OPTIONAL]
+## Use a different symbol for STO_MIPS_MIPS16 (0xf0) as it interferes
+## with STO_MIPS_PIC (0x20) and STO_MIPS_MICROMIPS (0x80).
+  - Name: bar
+    Other: [ STO_MIPS_MIPS16 ]