1// Check zlib-gnu style
2// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib-gnu -triple x86_64-pc-linux-gnu < %s -o %t
3// RUN: llvm-objdump -s %t | FileCheck --check-prefix=CHECK-GNU-STYLE %s
4// RUN: llvm-dwarfdump -debug-dump=str %t | FileCheck --check-prefix=STR %s
5// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib-gnu -triple i386-pc-linux-gnu < %s \
6// RUN:     | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS-GNU %s
7
8// Check zlib style
9// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib -triple x86_64-pc-linux-gnu < %s -o %t
10// RUN: llvm-objdump -s %t | FileCheck --check-prefix=CHECK-ZLIB-STYLE %s
11// RUN: llvm-dwarfdump -debug-dump=str %t | FileCheck --check-prefix=STR %s
12// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib -triple i386-pc-linux-gnu < %s \
13// RUN:     | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS-ZLIB %s
14// RUN: llvm-readobj -sections %t | FileCheck --check-prefix=ZLIB-STYLE-FLAGS %s
15
16// REQUIRES: zlib
17
18// Don't compress small sections, such as this simple debug_abbrev example
19// CHECK-GNU-STYLE: Contents of section .debug_abbrev:
20// CHECK-GNU-STYLE-NOT: ZLIB
21// CHECK-GNU-STYLE-NOT: Contents of
22
23// CHECK-GNU-STYLE: Contents of section .debug_info:
24
25// CHECK-GNU-STYLE: Contents of section .zdebug_str:
26// Check for the 'ZLIB' file magic at the start of the section only
27// CHECK-GNU-STYLE-NEXT: ZLIB
28// CHECK-GNU-STYLE-NOT: ZLIB
29// FIXME: Handle compressing alignment fragments to support compressing debug_frame
30// CHECK-GNU-STYLE: Contents of section .debug_frame:
31// CHECK-GNU-STYLE-NOT: ZLIB
32// CHECK-GNU-STYLE: Contents of
33
34// Decompress one valid dwarf section just to check that this roundtrips,
35// we use .zdebug_str section for that
36// STR: perfectly compressable data sample *****************************************
37
38// In x86 32 bit named symbols are used for temporary symbols in merge
39// sections, so make sure we handle symbols inside compressed sections
40// 386-SYMBOLS-GNU: Name: .Linfo_string0
41// 386-SYMBOLS-GNU-NOT: }
42// 386-SYMBOLS-GNU: Section: .zdebug_str
43
44// Now check the zlib style output:
45
46// Don't compress small sections, such as this simple debug_abbrev example
47// CHECK-ZLIB-STYLE: Contents of section .debug_abbrev:
48// CHECK-ZLIB-STYLE-NOT: ZLIB
49// CHECK-ZLIB-STYLE-NOT: Contents of
50// CHECK-ZLIB-STYLE: Contents of section .debug_info:
51// FIXME: Handle compressing alignment fragments to support compressing debug_frame
52// CHECK-ZLIB-STYLE: Contents of section .debug_frame:
53// CHECK-ZLIB-STYLE-NOT: ZLIB
54// CHECK-ZLIB-STYLE: Contents of
55
56// Check that debug_line section was not renamed, so it is
57// zlib-style, not zlib-gnu one. Check that SHF_COMPRESSED was set.
58// ZLIB-STYLE-FLAGS:      Section {
59// ZLIB-STYLE-FLAGS:        Index:
60// ZLIB-STYLE-FLAGS:        Name: .debug_str
61// ZLIB-STYLE-FLAGS-NEXT:   Type: SHT_PROGBITS
62// ZLIB-STYLE-FLAGS-NEXT:   Flags [
63// ZLIB-STYLE-FLAGS-NEXT:     SHF_COMPRESSED
64
65// 386-SYMBOLS-ZLIB: Name: .Linfo_string0
66// 386-SYMBOLS-ZLIB-NOT: }
67// 386-SYMBOLS-ZLIB: Section: .debug_str
68
69	.section	.debug_line,"",@progbits
70
71	.section	.debug_abbrev,"",@progbits
72.Lsection_abbrev:
73	.byte	1                       # Abbreviation Code
74	.byte	17                      # DW_TAG_compile_unit
75	.byte	0                       # DW_CHILDREN_no
76	.byte	27                      # DW_AT_comp_dir
77	.byte	14                      # DW_FORM_strp
78	.byte	0                       # EOM(1)
79	.byte	0                       # EOM(2)
80
81	.section	.debug_info,"",@progbits
82	.long	12                      # Length of Unit
83	.short	4                       # DWARF version number
84	.long	.Lsection_abbrev        # Offset Into Abbrev. Section
85	.byte	8                       # Address Size (in bytes)
86	.byte	1                       # Abbrev [1] DW_TAG_compile_unit
87	.long	.Linfo_string0          # DW_AT_comp_dir
88
89	.text
90foo:
91	.cfi_startproc
92	.file 1 "Driver.ii"
93# pad out the line table to make sure it's big enough to warrant compression
94	.loc 1 2 0
95        nop
96	.loc 1 3 0
97        nop
98	.loc 1 4 0
99        nop
100	.loc 1 5 0
101        nop
102	.loc 1 6 0
103        nop
104	.loc 1 7 0
105        nop
106	.loc 1 8 0
107        nop
108	.cfi_endproc
109	.cfi_sections .debug_frame
110
111# Below is the section we will use to check that after compression with llvm-mc,
112# llvm-dwarfdump tool will be able to decompress data back and dump it. Data sample
113# should be compressable enough, so it is filled with some amount of equal symbols at the end
114	.section        .debug_str,"MS",@progbits,1
115.Linfo_string0:
116        .asciz  "perfectly compressable data sample *****************************************"
117