[ELF][MIPS] Add test case to check using GP0 value in relocation calculation. NFC.

llvm-svn: 266119

lld/test/ELF/mips-gprel32-relocs-gp0.test

@@ -0,0 +1,31 @@
+# Check R_MIPS_GPREL32 relocation calculation if input file conatins
+# non-zero GP0 value in the .reginfo section.
+# FIXME: The only way to get an object file with non-zero GP0 value
+# is to link multiple object files with GOT relocations using '-r'
+# option. LLD does not calculate and generate GP0 correctly so we
+# use a binary input in this test. The input object file is a result
+# of linking two object files with R_MIPS_GPREL32 relocations.
+
+# RUN: ld.lld -shared -o %t.so %S/Inputs/mips-gprel32-gp0.o
+# RUN: llvm-objdump -s %S/Inputs/mips-gprel32-gp0.o \
+# RUN:   | FileCheck -check-prefix=OBJ %s
+# RUN: llvm-objdump -s -t %t.so | FileCheck %s
+
+# OBJ:      Contents of section .reginfo:
+# OBJ-NEXT:  0000 00000001 00000000 00000000 00000000
+# OBJ-NEXT:  0010 00000000 00007fef
+#                              ^-- GP0 value
+# OBJ:      Contents of section .rodata:
+# OBJ-NEXT:  0000 ffff8011 ffff8011
+#                 ^-- foo addend
+#                          ^-- bar addend
+
+# CHECK: Contents of section .rodata:
+# CHECK:  012c fffe8010 fffe8020
+#              ^ 0x10000 + 0xffff8011 + 0x7fef - 0x27ff0
+#                       ^ 0x10010 + 0xffff8011 + 0x7fef - 0x27ff0
+
+# CHECK: SYMBOL TABLE:
+# CHECK: 00010000         .text          00000000 foo
+# CHECK: 00010010         .text          00000000 bar
+# CHECK: 00027ff0         .got           00000000 _gp