## Test the "--skip-line-zero" option.
##
## This test uses handcrafted assembly to produce the following line table:
## Address Line Column File ISA Discriminator OpIndex Flags
## ------------------ ------ ------ ------ --- ------------- ------- -------------
## 0x0000000000001710 1 0 1 0 0 0
## 0x0000000000001714 0 0 1 0 0 0
## 0x0000000000001719 1 2 1 0 0 0
## 0x000000000000171b 1 2 1 0 0 0 end_sequence
## 0x00000000000016c0 0 0 1 0 0 0
## 0x00000000000016cf 2 0 1 0 0 0
## 0x00000000000016d4 0 0 1 0 0 0
## 0x00000000000016d9 0 0 1 0 0 0
## 0x00000000000016df 0 0 1 0 0 0 end_sequence
# REQUIRES: x86-registered-target
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
## Check that without '--skip-line-zero', line zero is displayed for a line-table entry which has no source correspondence.
# RUN: llvm-symbolizer --obj=%t.o -f=none 0x16d4 | FileCheck --strict-whitespace --match-full-lines --check-prefix=DISABLE %s
# DISABLE:main.c:0:0
## Check that the '--skip-line-zero' does not cross sequence boundaries.
## If it fails to find in the current sequence then line zero is returned for the queried address.
# RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x16c0 | FileCheck --strict-whitespace --match-full-lines --check-prefix=FAIL-ACROSS-SEQ %s
# FAIL-ACROSS-SEQ:main.c:0:0
## Check that with '--skip-line-zero', the last non-zero line in the current sequence is displayed.
# RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x1717 | FileCheck --strict-whitespace --match-full-lines --check-prefix=WITHIN-SEQ %s
# WITHIN-SEQ:main.c:1:0 (approximate)
## Check that with '--skip-line-zero', multiple line zero rows are skipped within the current sequence.
# RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x16d9 | FileCheck --strict-whitespace --match-full-lines --check-prefix=MULTIPLE-ROWS %s
# MULTIPLE-ROWS:main.c:2:0 (approximate)
## Check that '--skip-line-zero' only affects the line zero addresses when more than one address is specified.
# RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero 0x16d4 0x1719 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=ENABLE,NO-APPROX %s
# ENABLE:main.c:2:0 (approximate)
# NO-APPROX:main.c:1:2
## Check to ensure that '--skip-line-zero' with '--verbose' enabled displays approximate flag in verbose ouptut.
# RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero --verbose 0x1717 | FileCheck --strict-whitespace --match-full-lines --check-prefix=VERBOSE %s
# VERBOSE: Filename: main.c
# VERBOSE-NEXT: Line: 1
# VERBOSE-NEXT: Column: 0
# VERBOSE-NEXT: Approximate: true
## Check to ensure that '--skip-line-zero' with '--output-style=JSON' displays approximate flag in JSON output.
# RUN: llvm-symbolizer --obj=%t.o -f=none --skip-line-zero --output-style=JSON 0x1717 | FileCheck --strict-whitespace --match-full-lines --check-prefix=JSON %s
# JSON:[{"Address":"0x1717","ModuleName":"{{.*}}{{[/|\]+}}skip-line-zero.s{{.*}}","Symbol":[{"Approximate":true,"Column":0,"Discriminator":0,"FileName":"main.c","FunctionName":"","Line":1,"StartAddress":"","StartFileName":"","StartLine":0}]}]
## main.c
## __attribute__((section("def"))) int foo() { return 1234; }
## int main(void) { return foo()+5678; }
##
## Generated using
## clang -S -gdwarf-4 --target=x86_64-pc-linux -fdebug-prefix-map=/tmp="" main.c -o main.s
##
## Sections belonging to code segment(.text) are removed. Sections related to debug information(other than .debug_line) are modified. Section .debug_line is handwritten. Section .debug_str is deleted.
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 0 # DW_CHILDREN_no
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.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 .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x55 DW_TAG_compile_unit
.long .Lline_table_start0 # DW_AT_stmt_list
.quad 0 # DW_AT_low_pc
.long .Ldebug_ranges0 # DW_AT_ranges
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_ranges,"",@progbits
.Ldebug_ranges0:
.quad 0x1710 #.Lfunc_begin0
.quad 0x171b #.Lfunc_end0
.quad 0x16c0 #.Lfunc_begin1
.quad 0x16df #.Lfunc_end1
.quad 0
.quad 0
.section .debug_line,"",@progbits
.Lline_table_start0:
.long .Lunit_end - .Lunit_start # unit length
.Lunit_start:
.short 4 # version
.long .Lprologue_end - .Lprologue_start # header length
.Lprologue_start:
.byte 1 # minimum_instruction_length
.byte 1 # maximum_operations_per_instruction
.byte 0 # default_is_stmt
.byte -5 # line_base
.byte 14 # line_range
.byte 13 # opcode_base
.byte 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1 # arguments in standard opcodes
.byte 0 # end of include directories
.asciz "main.c" # filename
.byte 0 # directory index
.byte 0 # modification time
.byte 0 # length of file (unavailable)
.byte 0 # end of filenames
.Lprologue_end:
.byte 0x00, 9, 2 # DW_LNE_set_address
.quad 0x1710 # Address Value
.byte 0x01 # DW_LNS_copy
.byte 0x49 # (address += 4, line += -1, op-index += 0)
.byte 0x05, 2 # DW_LNS_set_column (2)
.byte 0x59 # (address += 5, line += 1, op-index += 0)
.byte 0x02 # DW_LNS_advance_pc
.uleb128 0x02 # (addr += 2, op-index += 0)
.byte 0x00, 1, 1 # DW_LNE_end_sequence
.byte 0x00, 9, 2 # DW_LNE_set_address
.quad 0x16c0 # Address Value
.byte 0x11 # (address += 0, line += -1, op-index += 0)
.byte 0xe6 # (address += 15, line += 2, op-index += 0)
.byte 0x56 # (address += 5, line += -2, op-index += 0)
.byte 0x58 # (address += 5, line += 0, op-index += 0)
.byte 0x02 # DW_LNS_advance_pc
.uleb128 0x06 # (addr += 6, op-index += 0)
.byte 0x00, 1, 1 # DW_LNE_end_sequence
.Lunit_end:
Codebase Browser
llvm