[lld] r267327 - [ELF][MIPS] Add test case to check creation of GOT entries for weak symbols. NFC

[Simon Atanasyan via llvm-commits]

Author: atanasyan
Date: Sun Apr 24 00:08:43 2016
New Revision: 267327

URL: http://llvm.org/viewvc/llvm-project?rev=267327&view=rev
Log:
[ELF][MIPS] Add test case to check creation of GOT entries for weak symbols. NFC

Added:
    lld/trunk/test/ELF/mips-got-weak.s

Added: lld/trunk/test/ELF/mips-got-weak.s
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/mips-got-weak.s?rev=267327&view=auto
==============================================================================
--- lld/trunk/test/ELF/mips-got-weak.s (added)
+++ lld/trunk/test/ELF/mips-got-weak.s Sun Apr 24 00:08:43 2016
@@ -0,0 +1,172 @@
+# Check R_MIPS_GOT16 relocation against weak symbols.
+
+# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
+# RUN: ld.lld %t.o -shared -o %t1.so
+# RUN: llvm-readobj -r -dt -dynamic-table -mips-plt-got %t1.so \
+# RUN:   | FileCheck -check-prefix=NOSYM %s
+# RUN: ld.lld %t.o -shared -Bsymbolic -o %t2.so
+# RUN: llvm-readobj -r -dt -dynamic-table -mips-plt-got %t2.so \
+# RUN:   | FileCheck -check-prefix=SYM %s
+
+# REQUIRES: mips
+
+# NOSYM:      Relocations [
+# NOSYM-NEXT: ]
+
+# NOSYM:        Symbol {
+# NOSYM:          Name: foo
+# NOSYM-NEXT:     Value: 0x30000
+# NOSYM-NEXT:     Size: 0
+# NOSYM-NEXT:     Binding: Weak
+# NOSYM-NEXT:     Type: None
+# NOSYM-NEXT:     Other: 0
+# NOSYM-NEXT:     Section: .data
+# NOSYM-NEXT:   }
+# NOSYM-NEXT:   Symbol {
+# NOSYM-NEXT:     Name: bar
+# NOSYM-NEXT:     Value: 0x0
+# NOSYM-NEXT:     Size: 0
+# NOSYM-NEXT:     Binding: Weak
+# NOSYM-NEXT:     Type: None
+# NOSYM-NEXT:     Other: 0
+# NOSYM-NEXT:     Section: Undefined
+# NOSYM-NEXT:   }
+# NOSYM-NEXT:   Symbol {
+# NOSYM-NEXT:     Name: sym
+# NOSYM-NEXT:     Value: 0x30004
+# NOSYM-NEXT:     Size: 0
+# NOSYM-NEXT:     Binding: Global
+# NOSYM-NEXT:     Type: None
+# NOSYM-NEXT:     Other: 0
+# NOSYM-NEXT:     Section: .data
+# NOSYM-NEXT:   }
+# NOSYM-NEXT: ]
+
+# NOSYM:      0x70000011 MIPS_SYMTABNO        4
+# NOSYM-NEXT: 0x7000000A MIPS_LOCAL_GOTNO     2
+# NOSYM-NEXT: 0x70000013 MIPS_GOTSYM          0x1
+
+# NOSYM:      Primary GOT {
+# NOSYM-NEXT:   Canonical gp value: 0x27FF0
+# NOSYM-NEXT:   Reserved entries [
+# NOSYM-NEXT:     Entry {
+# NOSYM-NEXT:       Address: 0x20000
+# NOSYM-NEXT:       Access: -32752
+# NOSYM-NEXT:       Initial: 0x0
+# NOSYM-NEXT:       Purpose: Lazy resolver
+# NOSYM-NEXT:     }
+# NOSYM-NEXT:     Entry {
+# NOSYM-NEXT:       Address: 0x20004
+# NOSYM-NEXT:       Access: -32748
+# NOSYM-NEXT:       Initial: 0x80000000
+# NOSYM-NEXT:       Purpose: Module pointer (GNU extension)
+# NOSYM-NEXT:     }
+# NOSYM-NEXT:   ]
+# NOSYM-NEXT:   Local entries [
+# NOSYM-NEXT:   ]
+# NOSYM-NEXT:   Global entries [
+# NOSYM-NEXT:     Entry {
+# NOSYM-NEXT:       Address: 0x20008
+# NOSYM-NEXT:       Access: -32744
+# NOSYM-NEXT:       Initial: 0x30000
+# NOSYM-NEXT:       Value: 0x30000
+# NOSYM-NEXT:       Type: None
+# NOSYM-NEXT:       Section: .data
+# NOSYM-NEXT:       Name: foo
+# NOSYM-NEXT:     }
+# NOSYM-NEXT:     Entry {
+# NOSYM-NEXT:       Address: 0x2000C
+# NOSYM-NEXT:       Access: -32740
+# NOSYM-NEXT:       Initial: 0x0
+# NOSYM-NEXT:       Value: 0x0
+# NOSYM-NEXT:       Type: None
+# NOSYM-NEXT:       Section: Undefined
+# NOSYM-NEXT:       Name: bar
+# NOSYM-NEXT:     }
+# NOSYM-NEXT:     Entry {
+# NOSYM-NEXT:       Address: 0x20010
+# NOSYM-NEXT:       Access: -32736
+# NOSYM-NEXT:       Initial: 0x30004
+# NOSYM-NEXT:       Value: 0x30004
+# NOSYM-NEXT:       Type: None
+# NOSYM-NEXT:       Section: .data
+# NOSYM-NEXT:       Name: sym
+# NOSYM-NEXT:     }
+# NOSYM-NEXT:   ]
+# NOSYM-NEXT:   Number of TLS and multi-GOT entries: 0
+# NOSYM-NEXT: }
+
+# SYM:      Relocations [
+# SYM-NEXT: ]
+
+# SYM:        Symbol {
+# SYM:          Name: bar
+# SYM-NEXT:     Value: 0x0
+# SYM-NEXT:     Size: 0
+# SYM-NEXT:     Binding: Weak
+# SYM-NEXT:     Type: None
+# SYM-NEXT:     Other: 0
+# SYM-NEXT:     Section: Undefined
+# SYM-NEXT:   }
+# SYM-NEXT: ]
+
+# SYM:      0x70000011 MIPS_SYMTABNO        4
+# SYM-NEXT: 0x7000000A MIPS_LOCAL_GOTNO     4
+# SYM-NEXT: 0x70000013 MIPS_GOTSYM          0x3
+
+# SYM:      Primary GOT {
+# SYM-NEXT:   Canonical gp value: 0x27FF0
+# SYM-NEXT:   Reserved entries [
+# SYM-NEXT:     Entry {
+# SYM-NEXT:       Address: 0x20000
+# SYM-NEXT:       Access: -32752
+# SYM-NEXT:       Initial: 0x0
+# SYM-NEXT:       Purpose: Lazy resolver
+# SYM-NEXT:     }
+# SYM-NEXT:     Entry {
+# SYM-NEXT:       Address: 0x20004
+# SYM-NEXT:       Access: -32748
+# SYM-NEXT:       Initial: 0x80000000
+# SYM-NEXT:       Purpose: Module pointer (GNU extension)
+# SYM-NEXT:     }
+# SYM-NEXT:   ]
+# SYM-NEXT:   Local entries [
+# SYM-NEXT:     Entry {
+# SYM-NEXT:       Address: 0x20008
+# SYM-NEXT:       Access: -32744
+# SYM-NEXT:       Initial: 0x30000
+# SYM-NEXT:     }
+# SYM-NEXT:     Entry {
+# SYM-NEXT:       Address: 0x2000C
+# SYM-NEXT:       Access: -32740
+# SYM-NEXT:       Initial: 0x30004
+# SYM-NEXT:     }
+# SYM-NEXT:   ]
+# SYM-NEXT:   Global entries [
+# SYM-NEXT:     Entry {
+# SYM-NEXT:       Address: 0x20010
+# SYM-NEXT:       Access: -32736
+# SYM-NEXT:       Initial: 0x0
+# SYM-NEXT:       Value: 0x0
+# SYM-NEXT:       Type: None
+# SYM-NEXT:       Section: Undefined
+# SYM-NEXT:       Name: bar
+# SYM-NEXT:     }
+# SYM-NEXT:   ]
+# SYM-NEXT:   Number of TLS and multi-GOT entries: 0
+# SYM-NEXT: }
+
+  .text
+  .global  sym
+  .weak    foo,bar
+func:
+  lw      $t0,%got(foo)($gp)
+  lw      $t0,%got(bar)($gp)
+  lw      $t0,%got(sym)($gp)
+
+  .data
+  .weak foo
+foo:
+  .word 0
+sym:
+  .word 0