[lld] r221857 - [ELF] Check linker created dynamic variables

[Shankar Easwaran]

Author: shankare
Date: Wed Nov 12 21:25:34 2014
New Revision: 221857

URL: http://llvm.org/viewvc/llvm-project?rev=221857&view=rev
Log:
[ELF] Check linker created dynamic variables

Check the values of _GLOBAL_OFFSET_TABLE_ and _DYNAMIC variables created by
linker.

Added:
    lld/trunk/test/elf/X86_64/dynamicvars.test

Added: lld/trunk/test/elf/X86_64/dynamicvars.test
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/elf/X86_64/dynamicvars.test?rev=221857&view=auto
==============================================================================
--- lld/trunk/test/elf/X86_64/dynamicvars.test (added)
+++ lld/trunk/test/elf/X86_64/dynamicvars.test Wed Nov 12 21:25:34 2014
@@ -0,0 +1,124 @@
+# Tests that the dynamic variables created by the linker are set to the right
+# values.
+
+#RUN: yaml2obj --format elf -docnum 1 %s -o %t.o
+#RUN: lld -flavor gnu  -target x86_64 -e main %t.o -o %t1 --noinhibit-exec
+#RUN: llvm-readobj -sections -symbols %t1 | FileCheck -check-prefix CHECKSYMS %s
+
+
+#CHECKSYMS:    Name: .dynamic
+#CHECKSYMS:    Type: SHT_DYNAMIC
+#CHECKSYMS:    Address: [[TARGETA:[0xa-fA-f0-9]+]]
+#CHECKSYMS:    Name: .got.plt
+#CHECKSYMS:    Type: SHT_PROGBITS
+#CHECKSYMS:    Address: [[TARGETB:[0xa-fA-f0-9]+]]
+#CHECKSYMS:    Name: _DYNAMIC
+#CHECKSYMS:    Value: [[TARGETA]]
+#CHECKSYMS:    Section: .dynamic
+#CHECKSYMS:    Name: _GLOBAL_OFFSET_TABLE_
+#CHECKSYMS:    Value: [[TARGETB]]
+#CHECKSYMS:    Section: .got.plt
+
+---
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  OSABI:           ELFOSABI_GNU
+  Type:            ET_REL
+  Machine:         EM_X86_64
+Sections:
+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    AddressAlign:    0x0000000000000010
+    Content:         554889E54883EC10488B0500000000C745FC00000000C7000A000000E80000000031C98945F889C84883C4105DC36690554889E531C05DC3
+  - Name:            .rela.text
+    Type:            SHT_RELA
+    Link:            .symtab
+    AddressAlign:    0x0000000000000008
+    Info:            .text
+    Relocations:
+      - Offset:          0x000000000000000B
+        Symbol:          a
+        Type:            R_X86_64_GOTPCREL
+        Addend:          -4
+      - Offset:          0x000000000000001D
+        Symbol:          foo
+        Type:            R_X86_64_PLT32
+        Addend:          -4
+  - Name:            .data
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_WRITE, SHF_ALLOC ]
+    AddressAlign:    0x0000000000000004
+    Content:         ''
+  - Name:            .bss
+    Type:            SHT_NOBITS
+    Flags:           [ SHF_WRITE, SHF_ALLOC ]
+    AddressAlign:    0x0000000000000004
+    Content:         ''
+  - Name:            .comment
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_MERGE, SHF_STRINGS ]
+    AddressAlign:    0x0000000000000001
+    Content:         00636C616E672076657273696F6E20332E362E302000
+  - Name:            .note.GNU-stack
+    Type:            SHT_PROGBITS
+    AddressAlign:    0x0000000000000001
+    Content:         ''
+  - Name:            .eh_frame
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC ]
+    AddressAlign:    0x0000000000000008
+    Content:         1400000000000000037A5200017810011B0C070890010000180000001C000000000000002E00000000410E108602430D060000001800000038000000000000000800000000410E108602430D06000000
+  - Name:            .rela.eh_frame
+    Type:            SHT_RELA
+    Link:            .symtab
+    AddressAlign:    0x0000000000000008
+    Info:            .eh_frame
+    Relocations:
+      - Offset:          0x0000000000000020
+        Symbol:          .text
+        Type:            R_X86_64_PC32
+        Addend:          0
+      - Offset:          0x000000000000003C
+        Symbol:          .text
+        Type:            R_X86_64_PC32
+        Addend:          48
+Symbols:
+  Local:
+    - Name:            1.c
+      Type:            STT_FILE
+    - Name:            .text
+      Type:            STT_SECTION
+      Section:         .text
+    - Name:            .data
+      Type:            STT_SECTION
+      Section:         .data
+    - Name:            .bss
+      Type:            STT_SECTION
+      Section:         .bss
+    - Name:            .comment
+      Type:            STT_SECTION
+      Section:         .comment
+    - Name:            .note.GNU-stack
+      Type:            STT_SECTION
+      Section:         .note.GNU-stack
+    - Name:            .eh_frame
+      Type:            STT_SECTION
+      Section:         .eh_frame
+  Global:
+    - Name:            a
+      Type:            STT_OBJECT
+      Value:           0x0000000000000004
+      Size:            0x0000000000000004
+    - Name:            foo
+      Type:            STT_FUNC
+      Section:         .text
+      Value:           0x0000000000000030
+      Size:            0x0000000000000008
+    - Name:            main
+      Type:            STT_FUNC
+      Section:         .text
+      Size:            0x000000000000002E
+    - Name:            _GLOBAL_OFFSET_TABLE_
+...