[ELF] - Added testcase gdb-index-ranges.s (https://reviews.llvm.org/D32750)

Before rL301170 was landed, LLD did not produce correct entries in .gdb_index address area.
Issue was fixed on LLVM DWARF parsers side and was relative to how .debug_ranges
section was scanned. It was main problem of PR32319.

It makes sense to have testcase on LLD size too. This checks that we generate proper values
now, because we do not have any tests for .gdb_index which works with .debug_ranges atm.

Differential revision: https://reviews.llvm.org/D32750

llvm-svn: 302006

diff --git a/lld/test/ELF/gdb-index-ranges.s b/lld/test/ELF/gdb-index-ranges.s
new file mode 100644 (file)
index 0000000..2dd158e
--- /dev/null
+++ b/lld/test/ELF/gdb-index-ranges.s
@@ -0,0 +1,66 @@
+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
+# RUN: ld.lld --gdb-index -e main %t.o -o %t
+# RUN: llvm-dwarfdump -debug-dump=gdb_index %t | FileCheck %s
+
+# CHECK:       .gnu_index contents:
+# CHECK:        Address area offset = 0x28, has 2 entries:
+# CHECK-NEXT:     Low/High address = [0x201000, 0x201001) (Size: 0x1), CU id = 0
+# CHECK-NEXT:     Low/High address = [0x201001, 0x201003) (Size: 0x2), CU id = 0
+
+.section .text.foo1,"ax",@progbits
+.Lfunc_begin0:
+ nop
+.Lfunc_end0:
+
+.section .text.foo2,"ax",@progbits
+.Lfunc_begin1:
+ nop
+ nop
+.Lfunc_end1:
+
+.section .debug_abbrev,"",@progbits
+.byte 1                       # Abbreviation Code
+.byte 17                      # DW_TAG_compile_unit
+.byte 0                       # DW_CHILDREN_no
+.byte 37                      # DW_AT_producer
+.byte 14                      # DW_FORM_strp
+.byte 19                      # DW_AT_language
+.byte 5                       # DW_FORM_data2
+.byte 3                       # DW_AT_name
+.byte 14                      # DW_FORM_strp
+.byte 16                      # DW_AT_stmt_list
+.byte 23                      # DW_FORM_sec_offset
+.byte 27                      # DW_AT_comp_dir
+.byte 14                      # DW_FORM_strp
+.byte 17                      # DW_AT_low_pc
+.byte 1                       # DW_FORM_addr
+.byte 85                      # DW_AT_ranges
+.byte 23                      # DW_FORM_sec_offset
+.byte 0                       # EOM(1)
+.byte 0                       # EOM(2)
+.byte 0                       # EOM(3)
+
+.section .debug_info,"",@progbits
+.Lcu_begin0:
+.long 38                      # Length of Unit
+.short 4                      # DWARF version number
+.long .debug_abbrev           # Offset Into Abbrev. Section
+.byte 8                       # Address Size (in bytes)
+.byte 1                       # Abbrev [1] 0xb:0x1f DW_TAG_compile_unit
+.long 0                       # DW_AT_producer
+.short 4                      # DW_AT_language
+.long 0                       # DW_AT_name
+.long 0                       # DW_AT_stmt_list
+.long 0                       # DW_AT_comp_dir
+.quad 0                       # DW_AT_low_pc
+.long .Ldebug_ranges0         # DW_AT_ranges
+
+.section .debug_ranges,"",@progbits
+.Ldebug_ranges0:
+.quad .Lfunc_begin0
+.quad .Lfunc_end0
+.quad .Lfunc_begin1
+.quad .Lfunc_end1
+.quad 0
+.quad 0