[llvm-readobj/elf] - Merge mips-got-overlapped.test to mips-got.test and refine testing.

[grimar]

Summary

The mips-got-overlapped.test was introduced in D16968 and its intention is
to check that when there is an empty section at the same address as .got,
then we are able to locate .got and dump it.

The issue is that this test does not test llvm-readelf and uses a precompiled
object. This path starts using YAML instead and merges
mips-got-overlapped.test to mips-got.test.

[MaskRay]

llvm/test/tools/llvm-readobj/ELF/mips-got.test

588

The checks above use two dash --check-prefix

[atanasyan]

LGTM

llvm/test/tools/llvm-readobj/ELF/mips-got-overlapped.test

-# Check that llvm-readobj -A correctly shows .got section
-# content if there are some other zero-sized sections with the same
-# address as the .got. got-over.exe.elf-mips has zero-sized .data
-# section at the same offset .got section.
-
-# RUN: llvm-readobj -A %p/Inputs/got-over.exe.elf-mips | FileCheck %s
-
-# GOT-OBJ: Cannot find PLTGOT dynamic table tag.
-
-# CHECK:      Primary GOT {
-# CHECK-NEXT:   Canonical gp value: 0x418270
-# CHECK-NEXT:   Reserved entries [
-# CHECK-NEXT:     Entry {
-# CHECK-NEXT:       Address: 0x410280
-# CHECK-NEXT:       Access: -32752
-# CHECK-NEXT:       Initial: 0x0
-# CHECK-NEXT:       Purpose: Lazy resolver
-# CHECK-NEXT:     }
-# CHECK-NEXT:     Entry {
-# CHECK-NEXT:       Address: 0x410284
-# CHECK-NEXT:       Access: -32748
-# CHECK-NEXT:       Initial: 0x80000000
-# CHECK-NEXT:       Purpose: Module pointer (GNU extension)
-# CHECK-NEXT:     }
-# CHECK-NEXT:   ]
-# CHECK-NEXT:   Local entries [
-# CHECK-NEXT:     Entry {
-# CHECK-NEXT:       Address: 0x410288
-# CHECK-NEXT:       Access: -32744
-# CHECK-NEXT:       Initial: 0x4001B8
-# CHECK-NEXT:     }
-# CHECK-NEXT:   ]
-# CHECK-NEXT:   Global entries [
-# CHECK-NEXT:     Entry {
-# CHECK-NEXT:       Address: 0x41028C
-# CHECK-NEXT:       Access: -32740
-# CHECK-NEXT:       Initial: 0x0
-# CHECK-NEXT:       Value: 0x0
-# CHECK-NEXT:       Type: None
-# CHECK-NEXT:       Section: Undefined
-# CHECK-NEXT:       Name: _foo
-# CHECK-NEXT:     }
-# CHECK-NEXT:   ]
-# CHECK-NEXT:   Number of TLS and multi-GOT entries: 0
-# CHECK-NEXT: }

llvm/test/tools/llvm-readobj/ELF/mips-got.test

- Type:   SHT_PROGBITS
     ShName: [[NAME=<none>]]
 
 ## Check we report a warning when we are unable to find the .got section due to an error.
 # RUN: yaml2obj --docnum=3 -DGOTNAME=0xffff %s -o %t.err7.o
 # RUN: llvm-readelf -A %t.err7.o 2>&1 | FileCheck %s -DFILE=%t.err7.o --check-prefix=NAME-ERR-NOTFOUND --implicit-check-not=warning:
 # RUN: llvm-readobj -A %t.err7.o 2>&1 | FileCheck %s -DFILE=%t.err7.o --check-prefix=NAME-ERR-NOTFOUND --implicit-check-not=warning:
 
 # NAME-ERR-NOTFOUND:      warning: '[[FILE]]': unable to read the name of SHT_PROGBITS section with index 2: a section [index 2] has an invalid sh_name (0xffff) offset which goes past the end of the section name string table
+
+## Check that we correctly show .got section content when there are some other zero-sized
+## sections with the same address as the .got section.
+## In this test the empty .data section has the same address as the .got section.
+
+# RUN: yaml2obj --docnum=4 %s -o %t.err7.o
+# RUN: llvm-readobj -A %t.err7.o 2>&1 | FileCheck %s -DFILE=%t.err7.o --check-prefix=SAME-ADDR-LLVM
+# RUN: llvm-readelf -A %t.err7.o 2>&1 | FileCheck %s -DFILE=%t.err7.o --check-prefix=SAME-ADDR-GNU
+
+# SAME-ADDR-LLVM:      Primary GOT {
+# SAME-ADDR-LLVM-NEXT:   Canonical gp value: 0x9112
+# SAME-ADDR-LLVM-NEXT:   Reserved entries [
+# SAME-ADDR-LLVM-NEXT:     Entry {
+# SAME-ADDR-LLVM-NEXT:       Address: 0x1122
+# SAME-ADDR-LLVM-NEXT:       Access: -32752
+# SAME-ADDR-LLVM-NEXT:       Initial: 0x0
+# SAME-ADDR-LLVM-NEXT:       Purpose: Lazy resolver
+# SAME-ADDR-LLVM-NEXT:     }
+# SAME-ADDR-LLVM-NEXT:   ]
+# SAME-ADDR-LLVM-NEXT:   Local entries [
+# SAME-ADDR-LLVM-NEXT:   ]
+# SAME-ADDR-LLVM-NEXT:   Global entries [
+# SAME-ADDR-LLVM-NEXT:     Entry {
+# SAME-ADDR-LLVM-NEXT:       Address: 0x112A
+# SAME-ADDR-LLVM-NEXT:       Access: -32744
+# SAME-ADDR-LLVM-NEXT:       Initial: 0x0
+# SAME-ADDR-LLVM-NEXT:       Value: 0x0
+# SAME-ADDR-LLVM-NEXT:       Type: None (0x0)
+# SAME-ADDR-LLVM-NEXT:       Section: Undefined (0x0)
+# SAME-ADDR-LLVM-NEXT:       Name: foo (1)
+# SAME-ADDR-LLVM-NEXT:     }
+# SAME-ADDR-LLVM-NEXT:   ]
+# SAME-ADDR-LLVM-NEXT:   Number of TLS and multi-GOT entries: 0
+# SAME-ADDR-LLVM-NEXT: }
+
+# SAME-ADDR-GNU:      Primary GOT:
+# SAME-ADDR-GNU-NEXT:  Canonical gp value: 0000000000009112
+# SAME-ADDR-GNU-EMPTY:
+# SAME-ADDR-GNU-NEXT:  Reserved entries:
+# SAME-ADDR-GNU-NEXT:            Address     Access          Initial Purpose
+# SAME-ADDR-GNU-NEXT:   0000000000001122 -32752(gp) 0000000000000000 Lazy resolver
+# SAME-ADDR-GNU-EMPTY:
+# SAME-ADDR-GNU-NEXT:  Global entries:
+# SAME-ADDR-GNU-NEXT:            Address     Access          Initial         Sym.Val. Type    Ndx Name
+# SAME-ADDR-GNU-NEXT:   000000000000112a -32744(gp) 0000000000000000 0000000000000000 NOTYPE  UND foo
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_REL
+  Machine: EM_MIPS
+Sections:
+  - Name:    .data
+    Type:    SHT_PROGBITS
+    Address: 0x1122
+    Size:    0
+  - Name:    .got
+    Type:    SHT_PROGBITS
+    Address: 0x1122
+    Size:    16
+  - Name: .dynamic
+    Type: SHT_DYNAMIC
+    Entries:
+      - Tag:   DT_MIPS_LOCAL_GOTNO
+        Value: 1
+      - Tag:   DT_MIPS_GOTSYM
+        Value: 1
+      - Tag:   DT_PLTGOT
+        Value: 0x1122
+DynamicSymbols:
+  - Name: foo