| # REQUIRES: x86 |
| |
| # RUN: split-file %s %t |
| # RUN: llvm-mc -triple x86_64-pc-linux -filetype=obj %t/input.s -o %t/input.o |
| # RUN: %lldb %t/input.o -o "command script import %t/script.py" -o exit | FileCheck %s |
| |
| # CHECK: Found 1 function(s). |
| # CHECK: foo: [input.o[0x0-0xe), input.o[0x14-0x1c)] |
| # CHECK-NEXT: input.o[0x0]: callq 0xe |
| # CHECK-NEXT: input.o[0x5]: jmp 0x1b |
| # CHECK-NEXT: input.o[0x7]: cmpl $0x0, %edi |
| # CHECK-NEXT: input.o[0xa]: je 0x14 |
| # CHECK-NEXT: input.o[0xc]: jmp 0x0 |
| # CHECK-EMPTY: |
| # CHECK-NEXT: input.o[0x14]: callq 0x19 |
| # CHECK-NEXT: input.o[0x19]: jmp 0x1b |
| # CHECK-NEXT: input.o[0x1b]: retq |
| ## Testing the GetRangeIndexForBlockAddress API. "ffffffff" indicates that |
| ## the address does not belong to any range. |
| # CHECK-NEXT: offset 0x00 => index 0 |
| # CHECK-NEXT: offset 0x0c => index 0 |
| # CHECK-NEXT: offset 0x0e => index ffffffff |
| # CHECK-NEXT: offset 0x13 => index ffffffff |
| # CHECK-NEXT: offset 0x14 => index 1 |
| # CHECK-NEXT: offset 0x1b => index 1 |
| # CHECK-NEXT: offset 0x1c => index ffffffff |
| |
| |
| #--- script.py |
| import lldb |
| |
| def __lldb_init_module(debugger, internal_dict): |
| target = debugger.GetSelectedTarget() |
| sym_ctxs = target.FindFunctions("foo") |
| print(f"Found {len(sym_ctxs)} function(s).") |
| for ctx in sym_ctxs: |
| fn = ctx.function |
| print(f"{fn.name}: {fn.GetRanges()}") |
| print(fn.GetInstructions(target)) |
| text = fn.addr.section |
| for offset in [0x00, 0x0c, 0x0e, 0x13, 0x14, 0x1b, 0x1c]: |
| idx = fn.block.GetRangeIndexForBlockAddress(lldb.SBAddress(text, offset)) |
| print(f"offset 0x{offset:02x} => index {idx:x}") |
| |
| #--- input.s |
| # An example of a function which has been split into two parts. Roughly |
| # corresponds to this C code. |
| # int baz(); |
| # int bar() { return 47; } |
| # int foo(int flag) { return flag ? bar() : baz(); } |
| # The function bar has been placed "in the middle" of foo. |
| |
| .text |
| |
| .type foo,@function |
| foo.__part.1: |
| .cfi_startproc |
| callq bar |
| jmp foo.__part.3 |
| .Lfoo.__part.1_end: |
| .size foo.__part.1, .Lfoo.__part.1_end-foo.__part.1 |
| .cfi_endproc |
| |
| foo: |
| .cfi_startproc |
| cmpl $0, %edi |
| je foo.__part.2 |
| jmp foo.__part.1 |
| .cfi_endproc |
| .Lfoo_end: |
| .size foo, .Lfoo_end-foo |
| |
| bar: |
| .cfi_startproc |
| movl $47, %eax |
| retq |
| .cfi_endproc |
| .Lbar_end: |
| .size bar, .Lbar_end-bar |
| |
| foo.__part.2: |
| .cfi_startproc |
| callq baz |
| jmp foo.__part.3 |
| .Lfoo.__part.2_end: |
| .size foo.__part.2, .Lfoo.__part.2_end-foo.__part.2 |
| .cfi_endproc |
| |
| foo.__part.3: |
| .cfi_startproc |
| retq |
| .Lfoo.__part.3_end: |
| .size foo.__part.3, .Lfoo.__part.3_end-foo.__part.3 |
| .cfi_endproc |
| |
| |
| .section .debug_abbrev,"",@progbits |
| .byte 1 # Abbreviation Code |
| .byte 17 # DW_TAG_compile_unit |
| .byte 1 # DW_CHILDREN_yes |
| .byte 37 # DW_AT_producer |
| .byte 8 # DW_FORM_string |
| .byte 19 # DW_AT_language |
| .byte 5 # DW_FORM_data2 |
| .byte 17 # DW_AT_low_pc |
| .byte 1 # DW_FORM_addr |
| .byte 85 # DW_AT_ranges |
| .byte 35 # DW_FORM_rnglistx |
| .byte 116 # DW_AT_rnglists_base |
| .byte 23 # DW_FORM_sec_offset |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| .byte 2 # Abbreviation Code |
| .byte 46 # DW_TAG_subprogram |
| .byte 0 # DW_CHILDREN_no |
| .byte 17 # DW_AT_low_pc |
| .byte 1 # DW_FORM_addr |
| .byte 18 # DW_AT_high_pc |
| .byte 1 # DW_FORM_addr |
| .byte 3 # DW_AT_name |
| .byte 8 # DW_FORM_string |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| .byte 3 # Abbreviation Code |
| .byte 46 # DW_TAG_subprogram |
| .byte 0 # DW_CHILDREN_no |
| .byte 85 # DW_AT_ranges |
| .byte 35 # DW_FORM_rnglistx |
| .byte 64 # DW_AT_frame_base |
| .byte 24 # DW_FORM_exprloc |
| .byte 3 # DW_AT_name |
| .byte 8 # DW_FORM_string |
| .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 5 # DWARF version number |
| .byte 1 # DWARF Unit Type |
| .byte 8 # Address Size (in bytes) |
| .long .debug_abbrev # Offset Into Abbrev. Section |
| .byte 1 # Abbrev [1] DW_TAG_compile_unit |
| .asciz "Hand-written DWARF" # DW_AT_producer |
| .short 29 # DW_AT_language |
| .quad 0 # DW_AT_low_pc |
| .byte 1 # DW_AT_ranges |
| .long .Lrnglists_table_base0 # DW_AT_rnglists_base |
| .byte 2 # Abbrev [2] DW_TAG_subprogram |
| .quad bar # DW_AT_low_pc |
| .quad .Lbar_end # DW_AT_high_pc |
| .asciz "bar" # DW_AT_name |
| .byte 3 # Abbrev [3] DW_TAG_subprogram |
| .byte 0 # DW_AT_ranges |
| .byte 1 # DW_AT_frame_base |
| .byte 86 |
| .asciz "foo" # DW_AT_name |
| .byte 0 # End Of Children Mark |
| .Ldebug_info_end0: |
| |
| .section .debug_rnglists,"",@progbits |
| .long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length |
| .Ldebug_list_header_start0: |
| .short 5 # Version |
| .byte 8 # Address size |
| .byte 0 # Segment selector size |
| .long 2 # Offset entry count |
| .Lrnglists_table_base0: |
| .long .Ldebug_ranges0-.Lrnglists_table_base0 |
| .long .Ldebug_ranges1-.Lrnglists_table_base0 |
| .Ldebug_ranges0: |
| .byte 6 # DW_RLE_start_end |
| .quad foo |
| .quad .Lfoo_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo.__part.1 |
| .quad .Lfoo.__part.1_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo.__part.2 |
| .quad .Lfoo.__part.2_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo.__part.3 |
| .quad .Lfoo.__part.3_end |
| .byte 0 # DW_RLE_end_of_list |
| .Ldebug_ranges1: |
| .byte 6 # DW_RLE_start_end |
| .quad bar |
| .quad .Lbar_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo.__part.1 |
| .quad .Lfoo.__part.1_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo.__part.2 |
| .quad .Lfoo.__part.2_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo.__part.3 |
| .quad .Lfoo.__part.3_end |
| .byte 6 # DW_RLE_start_end |
| .quad foo |
| .quad .Lfoo_end |
| .byte 0 # DW_RLE_end_of_list |
| .Ldebug_list_header_end0: |
| |
| .section ".note.GNU-stack","",@progbits |
