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# REQUIRES: zstd
# RUN: llvm-mc -filetype=obj -triple=x86_64 -compress-debug-sections=zstd %s -o %t
# RUN: llvm-readelf -S %t | FileCheck %s --check-prefix=SEC
# RUN: llvm-objdump -s %t | FileCheck %s
## Check that the large debug sections .debug_line and .debug_frame are compressed
## and have the SHF_COMPRESSED flag.
# SEC: .nonalloc PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 00 0 0 1
# SEC: .debug_line PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 00 C 0 0 8
# SEC: .debug_abbrev PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 00 0 0 1
# SEC: .debug_info PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 00 0 0 1
# SEC: .debug_str PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 01 MSC 0 0 8
# SEC: .debug_frame PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 00 C 0 0 8
# CHECK: Contents of section .debug_line
## ch_type == ELFCOMPRESS_ZSTD (2)
# CHECK-NEXT: 0000 02000000 00000000 55010000 00000000
# CHECK-NEXT: 0010 01000000 00000000 {{.*}}
## The compress/decompress round trip should be identical to the uncompressed output.
# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.uncom
# RUN: llvm-objcopy --decompress-debug-sections %t %t.decom
# RUN: cmp %t.uncom %t.decom
## Don't compress a section not named .debug_*.
.section .nonalloc,"",@progbits
.rept 50
.asciz "aaaaaaaaaa"
.endr
.section .debug_line,"",@progbits
.section .debug_abbrev,"",@progbits
.Lsection_abbrev:
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 0 # DW_CHILDREN_no
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.section .debug_info,"",@progbits
.long 12 # Length of Unit
.short 4 # DWARF version number
.long .Lsection_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_comp_dir
.text
foo:
.cfi_startproc
.file 1 "Driver.ii"
.rept 3
.ifdef I386
pushl %ebp
.cfi_def_cfa_offset 8
.cfi_offset %ebp, -8
movl %esp, %ebp
.cfi_def_cfa_register %ebp
pushl %ebx
pushl %edi
pushl %esi
.cfi_offset %esi, -20
.cfi_offset %edi, -16
.cfi_offset %ebx, -12
.loc 1 1 1 prologue_end
popl %esi
popl %edi
popl %ebx
popl %ebp
.cfi_def_cfa %esp, 4
.else
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
.cfi_offset %rbx, -56
.cfi_offset %r12, -48
.cfi_offset %r13, -40
.cfi_offset %r14, -32
.cfi_offset %r15, -24
.loc 1 1 1 prologue_end
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
.cfi_def_cfa %rsp, 8
.endif
.endr
# pad out the line table to make sure it's big enough to warrant compression
.irpc i, 123456789
.irpc j, 0123456789
.loc 1 \i\j \j
nop
.endr
.endr
.cfi_endproc
.cfi_sections .debug_frame
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "perfectly compressable data sample *****************************************"
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