| ## 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: |
| |
